Anti-glare Mirror Patents (Class 359/603)
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Patent number: 6648479Abstract: A device for screening interfering radiation from a radiation source from reaching a radiation receiver. The device includes a sensing device determining the position and orientation of the radiation receiver relative to the radiation source; a matrix, positioned in front of the radiation receiver, of elements which can adopt a varying transmittance and which cover the solid angle within which it is desirable to screen interfering radiation; and control equipment which calculates in what position relative to the radiation receiver a radiation obstacle is to be placed to be able to screen the radiation source and which controls the elements of the matrix in such a manner that the matrix forms a partial or complete radiation obstacle in the estimated position.Type: GrantFiled: June 1, 2001Date of Patent: November 18, 2003Assignee: Totalforsvarets ForskningsinstitutInventors: Torbjörn Gustafsson, Stan Zyra
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Patent number: 6648478Abstract: A vehicle rearview mirror system includes a rearview mirror assembly having an electro-optic reflective element, a support for attaching the reflective element to a portion of the vehicle and a control. The reflective element is movable with respect to the support. The control is for establishing a reflective level of the reflective element and for determining a heading of the vehicle. The control includes a first circuit assembly and a second circuit assembly interconnected by at least one wire between the first and second circuit assemblies. The first circuit assembly is mounted to be movable with movement of the reflective element. The second circuit assembly is mounted substantially fixed at the support.Type: GrantFiled: August 28, 2002Date of Patent: November 18, 2003Assignee: Donnelly CorporationInventor: Rodney K. Blank
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Publication number: 20030202249Abstract: An electrochromic rearview mirror system for a vehicle includes an electrochromic reflective element having an electrochromic cell, wherein the reflective element colors to a partial reflectance level in response to a drive signal applied to the cell. The rearview mirror assembly additionally includes a drive circuit which applies a pulsed drive signal to the electrochromic cell in order to establish the partial reflectance level of the reflective element. The drive circuit controls the partial reflectance level as a function of the duty cycle of the pulsed drive signal, which has a pulse repetition rate of at least approximately 10 cycles per second and preferably at least approximately 20 cycles per second. The drive circuit additionally adjusts the amplitude of the pulses as a function of the voltage developed across the electrochromic cell.Type: ApplicationFiled: April 14, 2003Publication date: October 30, 2003Applicant: Donnelly CorporationInventor: Kenneth L. Schierbeek
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Publication number: 20030169500Abstract: A side rear-view mirror for land vehicles comprises a liquid crystal cell formed by applying a liquid crystal coating over a pair of transparent conducting electrodes positioned in front of a reflecting mirror. Heating means cooperate with a temperature sensor to maintain the temperature of the liquid crystal cell substantially constant within operating limits of liquid crystals therewithin. Dimming means electrically connected to said liquid crystal cell apply dimming voltage to the liquid crystals. Insulating means encapsulate the liquid crystal cell within an envelope, thereby insulating the liquid crystals from high velocity air flow surrounding said mirror. Sensor means responsive to vehicle headlight beams impinging on said reflective element cooperate with the dimming means to increase the dimming voltage in direct proportion to impinging light intensity.Type: ApplicationFiled: March 6, 2002Publication date: September 11, 2003Inventor: Christopher C. Cutaia
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Patent number: 6598980Abstract: An interior rearview mirror 10 includes a stay 1 fastened on a ceiling in a vehicle, a mirror 2, a mirror housing 3, a bracket 4, and a lever that engages with the bracket 4 and tilts the mirror 2. At a lower end of the bracket 4 are alternately provided from side to side a first engageable projection having a projection at a front side, and a second engageable projection having a projection at a back side. At an upper end of the lever 5 are alternately provided from side to side a first engageable depression having a depression at a front side that engages with the first engageable projection, and a second engageable depression having a depression at a back side that engages with the second engageable projection.Type: GrantFiled: June 17, 2002Date of Patent: July 29, 2003Assignee: Murakami CorporationInventors: Masahiko Marusawa, Noriyuki Tsutsumi
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Patent number: 6595649Abstract: A vehicular electrochromic rearview mirror system includes an interior electrochromic rearview mirror assembly and at least one exterior electrochromic rearview mirror assembly. Each mirror assembly includes an electrochromic reflective element that assumes a partial reflectance level in response to a signal applied thereto. A drive circuit applies a drive signal to each of the electrochromic reflective elements. The drive circuit may include a digital controller, a master drive circuit responsive to the digital controller to apply a first drive signal to one of the electrochromic reflective elements and a slave drive circuit responsive to the digital controller to apply a second drive signal to a second of the electrochromic reflective elements. The second drive signal may be derived from the first drive signal. The drive circuit may include a digital controller and a switching power supply controlled by the digital controller to produce a drive signal.Type: GrantFiled: October 31, 2002Date of Patent: July 22, 2003Assignee: Donnelly CorporationInventors: Eric J. Hoekstra, Kenneth L. Schierbeek
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Patent number: 6592229Abstract: A mirror assembly 3 is detachably attached to an open side 2a of a mirror housing 2 in an exterior rearview mirror system (exterior mirror) 1 that is mounted outside a vehicle body. A mirror 4 in the mirror assembly 3 is comprised of a transparent glass plate 5 with a reflective coating 6 spread over a back surface of the transparent glass plate 5, through which reflective coating 6 electric current passes to produce an antiglare effect. The electric current passing through the reflective coating 6 is controlled using a sensors 8, 9 that detect intensity of light from surroundings and rearward of the vehicle body, and an electronic control circuit 10 that compares intensity of light detected in each sensor 8, 9 to automatically adjust an antiglare level of reflection in the reflective coating 6. A battery 11 that is connected with the electronic control circuit 10 and supplies electric current into the reflective coating 6 is provided in the mirror housing 2.Type: GrantFiled: June 17, 2002Date of Patent: July 15, 2003Assignee: Murakami CorporationInventors: Hidenori Sato, Mitsuyoshi Nagao, Noriyuki Unno
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Publication number: 20030112519Abstract: An antiglare and antireflection film is provided, which can be formed by a wet-coating method and which is excellent in the antireflection property, antifouling property, scratch resistance, clearness of transmitted image and planar uniformity. A polarizer and a liquid crystal display device using this film are also provided.Type: ApplicationFiled: November 5, 2002Publication date: June 19, 2003Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Tsutomu Arai, Shinichi Otani, Hidekazu Yamazaki, Hirohisa Hokazono
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Publication number: 20030112520Abstract: An anti-glare film comprising an anti-glare layer is obtained by coating or casting a liquid composition containing a polymer, a curable resin precursor (e.g., an ultraviolet curable resin) and a solvent, on a transparent plastic film; evaporating the solvent; forming a phase separation structure by spinodal decomposition; and curing the curable resin precursor by a light irradiation to form the anti-glare layer. Thus obtained anti-glare layer has an uneven structure on the surface thereof, isotropically transmits and scatters an incident light to show the maximum value of the scattered light intensity at a scattering angle of 0.1 to 10°, and has the total light transmittance of 70 to 100%. Moreover, the anti-glare layer has the visibility of a transmitted image of 70 to 100% measured by an image clarity measuring apparatus provided with an optical slit of 0.5 mm width, and the haze of 20 to 50%. Abrasion resistance is imparted to the anti-glare layer by curing the curable resin precursor.Type: ApplicationFiled: December 17, 2002Publication date: June 19, 2003Inventors: Hiroshi Takahashi, Hiroaki Ushida
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Patent number: 6572233Abstract: A mirror includes a housing, an electrochromic mirror subassembly in the housing including front and rear transparent elements, a layer of electrochromic material associated with the front and rear transparent elements, a reflector layer associated with the rear transparent element, with a portion of the reflector layer defining an opening, and an indicia panel covering the opening and configured to form a visual display. The visual display includes a panel with a discrete number of pre-formed letters and symbols. At least one light source is positioned in the housing to pass light through the indicia panel and the opening of the mirror subassembly to selectively illuminate the visual display. The plurality of light-emitting devices being a number that is equal to or less than the discrete number. The at least one light source emits a light matched in color to the indicia panel so that a maximum of light from the at least one light source passes through the indicia panel and is visible to a vehicle driver.Type: GrantFiled: September 18, 2000Date of Patent: June 3, 2003Assignee: Gentex CorporationInventors: Bradley L. Northman, John W. Carter, Frederick T. Bauer
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Publication number: 20030095333Abstract: An automatic optical lens sun shield comprises an elastic clip cartridge, a rotary connector and a tinted transparent optical lens screen. The elastic clip cartridge is constructed with spring clamp frames which can be pulled outward and clipped on original padded visor as well as detached from original padded visor without using any hand tool. The rotary connector is constructed with a positioning pivot shaft which drives the positioning pad to rotate. Thereby, the radiating teeth at the bottom of the positioning pad is engaged to the radiating positioning teeth of the rotating connector. Therefore, the rotary connector can rotate under the clip cartridge and is securely positioned thereon. The lower part of the rotary connector is formed with at least one pivot groove. The tinted transparent optical lens screen is engaged to the pivot groove via a rotary shaft.Type: ApplicationFiled: November 20, 2001Publication date: May 22, 2003Inventor: Peter Chen
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Patent number: 6547404Abstract: An electrochromic rearview mirror system for a vehicle includes an electrochromic reflective element having an electrochromic cell, wherein the reflective element colors to a partial reflectance level in response to a drive signal applied to the cell. The rearview mirror assembly additionally includes a drive circuit which applies a pulsed drive signal to the electrochromic cell in order to establish the partial reflectance level of the reflective element. The drive circuit controls the partial reflectance level as a function of the duty cycle of the pulsed drive signal, which has a pulse repetition rate of at least approximately 10 cycles per second and preferably at least approximately 20 cycles per second. The drive circuit additionally adjusts the amplitude of the pulses as a function of the voltage developed across the electrochromic cell.Type: GrantFiled: September 12, 2001Date of Patent: April 15, 2003Assignee: Donnelly CorporationInventor: Kenneth L. Schierbeek
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Publication number: 20030063387Abstract: An optical film containing an anti-glare layer having irregularities on a surface thereof, wherein the irregularities are arranged such that the value of NN determined by the sequence of the following steps is 1,000 or less: dividing the irregular surface of the optical film into 10,000 planes; calculating, for each divided plane, the standard deviation D of the distance between positions where adjacent high or low spots have peaks; determining the mean value M for the values of the standard deviation D; and determining the number NN of divided planes for which the value of the standard deviation D is 50% of the mean value M or lower; and, wherein the frequency at which the angle of inclination to the regular reflecting plane as measured with an aperture of two square microns is 0.5 or less degrees is 2 or lower.Type: ApplicationFiled: September 26, 2002Publication date: April 3, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Keiichi Miyazaki, Tsutomu Arai
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Publication number: 20030053216Abstract: A vehicular electrochromic rearview mirror system includes an interior electrochromic rearview mirror assembly and at least one exterior electrochromic rearview mirror assembly. Each mirror assembly includes an electrochromic reflective element that assumes a partial reflectance level in response to a signal applied thereto. A drive circuit applies a drive signal to each of the electrochromic reflective elements. The drive circuit may include a digital controller, a master drive circuit responsive to the digital controller to apply a first drive signal to one of the electrochromic reflective elements and a slave drive circuit responsive to the digital controller to apply a second drive signal to a second of the electrochromic reflective elements. The second drive signal may be derived from the first drive signal. The drive circuit may include a digital controller and a switching power supply controlled by the digital controller to produce a drive signal.Type: ApplicationFiled: October 31, 2002Publication date: March 20, 2003Applicant: Donnelly CorporationInventors: Eric J. Hoekstra, Kenneth L. Schierbeek
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Publication number: 20030048538Abstract: An electrochromic device is disclosed having a self-cleaning, hydrophilic optical coating. The electrochromic device preferably forms an external rearview mirror for a vehicle The coating preferably includes alternating layers of a photocatalytic material having a high index of refraction and a hydrophilic material having a low refractive index More specifically, the coating includes a first layer having a high refractive index, a second layer having a low refractive index, a third layer of titanium dioxide, and a fourth layer of silicon dioxide provided as an outermost layer. The disclosed optical coating exhibits a reflectance at the front surface of the reflective element that is less than about 20 percent, and has sufficient hydrophilic properties such that water droplets on a front surface of the optical coating exhibit a contact angle of less than about 20°.Type: ApplicationFiled: September 9, 2002Publication date: March 13, 2003Inventors: William L. Tonar, John S. Anderson, David J. Cammenga
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Patent number: 6520667Abstract: A vehicle rearview mirror system for a vehicle includes a rearview mirror assembly having a reflective element and a mirror case, which is adapted to mount to a vehicle. The mirror system further includes a display, which has at least one display character, and a display screen, which is provided at the mirror case. The display screen has a central viewing area generally aligned along a viewing axis. The display screen shifts the image of the display character from the display element, which is offset from the viewing axis, to the central viewing area of the display screen. The display screen shifts the image by at least one of refraction and diffraction so that the image of the display characters may be viewed by an occupant of the vehicle.Type: GrantFiled: September 15, 2000Date of Patent: February 18, 2003Assignee: Donnelly CorporationInventor: Rick Mousseau
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Patent number: 6511188Abstract: This single-actuator-and-cam, remotely adjustable, exterior vehicle rear-view mirror provides the driver with glare-free viewing toward the rear of the vehicle, by switching between a high-reflectivity position and a low-reflectivity position at the same view adjustment. The exterior rear-view mirrors are repositioned with only a single motor working with a rotary cam to scan all possible mirror positions. The single-motor mechanism increases the reliability of the mirror system. The single motor accomplishes both the directional alignment and the day/night reflectivity adjustment of the mirror by use of a cam which has positions for all predicted view positions, with two reflectivity positions for each view. This invention works equally well with flat wedge mirrors and wide-angle convex wedge mirrors.Type: GrantFiled: May 18, 2001Date of Patent: January 28, 2003Assignee: Anvik CorporationInventors: Carl C. Kling, Kanti Jain
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Patent number: 6510005Abstract: A partially transparent, partially reflective curved screen is formed with a thin metal layer supported on a transparent supporting layer. A transparent light absorbing dye or other means for optically absorbing visible light is incorporated in the transparent supporting layer. The screen allows an optical image such as from a TV to be transmitted therethrough with reduced ghost effect.Type: GrantFiled: October 22, 1999Date of Patent: January 21, 2003Inventor: Irving S. Goldstein
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Publication number: 20030011908Abstract: A method for manufacturing an anti-glare rearview mirror is disclosed. An anti-glare rearview mirror has a rectangular bracket and a control lever meshed with the bracket in order to change an angle of a mirror. In manufacturing this rear view mirror, the bracket and the control lever are molded in such a manner that a runner integrally connects the bracket and the control lever without interfering movement of the bracket or the control lever of the assembled anti-glare rearview mirror. And a worker separates the bracket and the control lever at the runner with his hands. Next the worker assembles the bracket and the control lever to a mirror housing without removing a remaining part of the runner.Type: ApplicationFiled: July 10, 2002Publication date: January 16, 2003Applicant: MURAKAMI CORPORATIONInventors: Masahiko Marusawa, Noriyuki Tsutsumi
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Publication number: 20030011887Abstract: A mirror assembly 3 is detachably attached to an open side 2a of a mirror housing 2 in an exterior rearview mirror system (exterior mirror) 1 that is mounted outside a vehicle body. A mirror 4 in the mirror assembly 3 is comprised of a transparent glass plate 5 with a reflective coating 6 spread over a back surface of the transparent glass plate 5, through which reflective coating 6 electric current passes to produce an antiglare effect. The electric current passing through the reflective coating 6 is controlled using a sensors 8, 9 that detect intensity of light from surroundings and rearward of the vehicle body, and an electronic control circuit 10 that compares intensity of light detected in each sensor 8, 9 to automatically adjust an antiglare level of reflection in the reflective coating 6. A battery 11 that is connected with the electronic control circuit 10 and supplies electric current into the reflective coating 6 is provided in the mirror housing 2.Type: ApplicationFiled: June 17, 2002Publication date: January 16, 2003Applicant: MURAKAMI CORPORATIONInventors: Hidenori Sato, Mitsuyoshi Nagao, Noriyuki Unno
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Publication number: 20030011906Abstract: An interior rearview mirror 10 includes a stay 1 fastened on a ceiling in a vehicle, a mirror 2, a mirror housing 3, a bracket 4, and a lever that engages with the bracket 4 and tilts the mirror 2. At a lower end of the bracket 4 are alternately provided from side to side a first engageable projection having a projection at a front side, and a second engageable projection having a projection at a back side. At an upper end of the lever 5 are alternately provided from side to side a first engageable depression having a depression at a front side that engages with the first engageable projection, and a second engageable depression having a depression at a back side that engages with the second engageable projection.Type: ApplicationFiled: June 17, 2002Publication date: January 16, 2003Applicant: MURAKAMI CORPORATIONInventors: Masahiko Marusawa, Noriyuki Tsutsumi
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Patent number: 6505942Abstract: The present invention provides an anti-reflection material, and a polarization film employing the anti-reflection material, having superior anti-glare properties, anti-reflection properties, and anti-static properties. In the anti-reflection material, an anti-glare layer is provided on the surface of a transparent substrate directly or via another layer, a low reflection layer having lower reflective index than that of the anti-glare layer is provided on the surface of the anti-glare layer, and the frontmost surface of the anti-reflection material is subjected to a surface hydrophilizing treatment.Type: GrantFiled: April 6, 2001Date of Patent: January 14, 2003Assignee: Tomoegawa Paper Co., Ltd.Inventors: Kazuya Ohishi, Chikara Murata
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Patent number: 6502943Abstract: An antiglare and antireflection film is provided, which can be formed by a wet-coating method and which is excellent in the antireflection property, antifouling property, scratch resistance, clearness of transmitted image and planar uniformity. A polarizer and a liquid crystal display device using this film are also provided. An antiglare and antireflection film is provided, comprising a transparent support having thereon an antiglare hard coat layer and a low refractive index layer having a refractive index of 1.38 to 1.49, wherein the low refractive index layer is formed by a coating method, the solvent of the coating solution for forming the low refractive index layer comprises one or more solvent, and from 50 to 100% by mass of the solvent is a solvent having a boiling point of 100° C. or less. A polarizer and a liquid crystal display device using this film are also provided.Type: GrantFiled: July 11, 2001Date of Patent: January 7, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Tsutomu Arai, Shinichi Otani, Hidekazu Yamazaki, Hirohisa Hokazono
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Patent number: 6499850Abstract: A rearview mirror for vehicles has a housing having a receiving opening for receiving an electrochromic mirror of a mirror glass and a cover glass. At least one seal is arranged in an edge area of the mirror glass and of the cover glass and extends at least over a portion of the circumference of the edge area of the mirror glass and the cover glass, respectively. The housing has a rim engaging the electrochromic mirror, wherein the rim, in the viewing direction onto the rearview mirror, has a part positioned in front of the seal to cover the seal from view. The part of the rim positioned in front of the seal is made of a transparent material and has a backside provided with a reflective metal coating.Type: GrantFiled: November 30, 2001Date of Patent: December 31, 2002Assignee: Reitter & Schefenacker GmbH & Co. KGInventor: Bernd Waldmann
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Patent number: 6474820Abstract: A vehicular electrochromic rearview mirror system includes an interior electrochromic rearview mirror assembly and at least one exterior electrochromic rearview mirror assembly. Each mirror assembly includes an electrochromic reflective element that assumes a partial reflectance level in response to a signal applied thereto. A drive circuit applies a drive signal to each of the electrochromic reflective elements. The drive circuit may include a digital controller, a master drive circuit responsive to the digital controller to apply a first drive signal to one of the electrochromic reflective elements and a slave drive circuit responsive to the digital controller to apply a second drive signal to a second of the electrochromic reflective elements. The second drive signal may be derived from the first drive signal. The drive circuit may include a digital controller and a switching power supply controlled by the digital controller to produce a drive signal.Type: GrantFiled: June 17, 2002Date of Patent: November 5, 2002Assignee: Donnelly CorporationInventors: Eric J. Hoekstra, Kenneth L. Schierbeek
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Patent number: 6471360Abstract: An electrochromic window assembly includes: a first transparent substrate having a first conductive coating on a surface thereof; a second transparent substrate having a second conductive coating on a surface thereof, the first transparent substrate and the second transparent substrate being spaced from each other to define a chamber therebetween; an electrochromic medium contained in the chamber, the electrochromic medium having a luminous transmittance that varies upon application of an electrical potential through the electrochromic medium; a plurality of first spaced facilities contacting the first conductive coating and capable of delivering electrical current to the first conductive coating; and a plurality of second spaced facilities contacting the second conductive coating and capable of delivering electrical current to the second conductive coating to establish the electrical potential through the electrochromic medium.Type: GrantFiled: July 31, 2001Date of Patent: October 29, 2002Assignee: PPG Industries Ohio, Inc.Inventors: Thomas G. Rukavina, Chia-Cheng Lin
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Publication number: 20020149851Abstract: A vehicular electrochromic rearview mirror system includes an interior electrochromic rearview mirror assembly and at least one exterior electrochromic rearview mirror assembly. Each mirror assembly includes an electrochromic reflective element that assumes a partial reflectance level in response to a signal applied thereto. A drive circuit applies a drive signal to each of the electrochromic reflective elements. The drive circuit may include a digital controller, a master drive circuit responsive to the digital controller to apply a first drive signal to one of the electrochromic reflective elements and a slave drive circuit responsive to the digital controller to apply a second drive signal to a second of the electrochromic reflective elements. The second drive signal may be derived from the first drive signal. The drive circuit may include a digital controller and a switching power supply controlled by the digital controller to produce a drive signal.Type: ApplicationFiled: June 17, 2002Publication date: October 17, 2002Applicant: Donnelly CorporationInventors: Eric J. Hoekstra, Kenneth L. Schierbeek
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Publication number: 20020135881Abstract: An electrochromic window assembly includes: a first transparent substrate having a first conductive coating on a surface thereof; a second transparent substrate having a second conductive coating on a surface thereof, the first transparent substrate and the second transparent substrate being spaced from each other to define a chamber therebetween; an electrochromic medium contained in the chamber, the electrochromic medium having a luminous transmittance that varies upon application of an electrical potential through the electrochromic medium; a plurality of first spaced facilities contacting the first conductive coating and capable of delivering electrical current to the first conductive coating; and a plurality of second spaced facilities contacting the second conductive coating and capable of delivering electrical current to the second conductive coating to establish the electrical potential through the electrochromic medium.Type: ApplicationFiled: July 31, 2001Publication date: September 26, 2002Inventors: Thomas G. Rukavina, Chia-Cheng Lin
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Patent number: 6450652Abstract: Motor vehicle windshields and safety glazing material, suitable for use as motor vehicle windshields and safety glazing material for automobiles, trucks, buses, motorcycles, locomotives. sport utility vehicles, all terrain vehicles, and vans. The motor vehicle windshields and safety glazing material contains Neodymium Oxide, a rare earth compound. The Neodymium Oxide filters out the yellow portion of the spectrum, reducing glare. Incorporation of yellow light in the spectrum desaturates colors and reduces contrast. Improvement in contrast and a reduction in glare permits, for example, a motor vehicle driver to better discriminate the contrast of objects when there is no daylight and the only illumination is artificial. For drivers, in particular, elimination of the yellow light lessens eye strain currently resulting from light emitted by the conventional headlights of oncoming vehicles during hours of darkness. Neodymium Oxide can also be added to safety glazing materials for use in bullet resistant shields.Type: GrantFiled: May 24, 2001Date of Patent: September 17, 2002Inventor: Daniel Nathan Karpen
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Patent number: 6447124Abstract: An electro-optic interior rearview mirror system is provided for a vehicle, comprising an interior rearview mirror assembly including an interior electro-optic reflective element and an interior mirror housing for said reflective element. The mirror assembly includes a mount for attachment to a portion of the vehicle and a control. The control includes a microprocessor that functions as a controller of a plurality of vehicle functions, the plurality of functions including the reflectance state of the electro-optic reflective element. The control includes a connection to a vehicle bus for receiving control signals via the bus for processing by the microprocessor.Type: GrantFiled: October 9, 2001Date of Patent: September 10, 2002Assignee: Donnelly Mirrors LimitedInventors: Sean J. Fletcher, Kenneth Schofield, Patrick J. Lawlor
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Patent number: 6447123Abstract: An electrochromic device is disclosed having a self-cleaning, hydrophilic optical coating. The electrochromic device preferably forms an external rearview mirror for a vehicle. The coating preferably includes alternating layers of a photocatalytic material having a high index of refraction and a hydrophilic material having a low refractive index. More specifically, the coating includes a first layer having a high refractive index, a second layer having a low refractive index, a third layer of titanium dioxide, and a fourth layer of silicon dioxide provided as an outermost layer. The disclosed optical coating exhibits a reflectance at the front surface of the reflective element that is less than about 20 percent, and has sufficient hydrophilic properties such that water droplets on a front surface of the optical coating exhibit a contact angle of less than about 20°.Type: GrantFiled: January 19, 2001Date of Patent: September 10, 2002Assignee: Gentex CorporationInventors: William L. Tonar, John S. Anderson, David J. Cammenga
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Patent number: 6425670Abstract: A colored anti-fog mirror includes a substrate, a metal reflecting film formed on a front surface of the substrate, and a hydrophilic function layer having a hydrophilic function and containing photocatalytic substance provided on the metal reflecting film. The thickness of the hydrophilic function layer is set in such a manner that wavelength of reflected light has a peak of reflectance within a range from 400 nm to 510 nm and a mirror surface thereby exhibits a bluish color.Type: GrantFiled: October 16, 2000Date of Patent: July 30, 2002Assignee: Murakami CorporationInventors: Toru Komatsu, Masaki Kobayashi
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Publication number: 20020097494Abstract: A rearview mirror for vehicles has a housing having a receiving opening for receiving an electrochromic mirror of a mirror glass and a cover glass. At least one seal is arranged in an edge area of the mirror glass and of the cover glass and extends at least over a portion of the circumference of the edge area of the mirror glass and the cover glass, respectively. The housing has a rim engaging the electrochromic mirror, wherein the rim, in the viewing direction onto the rearview mirror, has a part positioned in front of the seal to cover the seal from view. The part of the rim positioned in front of the seal is made of a transparent material and has a backside provided with a reflective metal coating.Type: ApplicationFiled: November 30, 2001Publication date: July 25, 2002Applicant: Reitter & Schefenacker GmbH & Co.KGInventor: Bernd Waldmann
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Publication number: 20020093741Abstract: Equipment on automotive vehicle is controlled by a system including at least one semiconductor light sensor having variable sensitivity to light. Each light sensor generates a light signal indicative of the intensity of light incident on the light sensor. Control logic varies the sensitivity of the light sensor and generates equipment control signals based on received light signals. Sensitivity of light sensors may be varied by changing the integration time for producing charge from light incident on light transducers, by selecting between light transducers of different sensitivity within the light sensor, by using a light transducer with a sensitivity that is a function of the amount of incident light, and the like. Controlled equipment includes devices such as automatically dimming rearview mirrors, headlamps, and moisture removal means.Type: ApplicationFiled: February 28, 2002Publication date: July 18, 2002Inventors: Jon H. Bechtel, Frederick T. Bauer, Joseph S. Stam, Robert C. Knapp, Robert R. Turnbull, David J. Schmidt, G. Bruce Poe, David L. Plangger, Robert H. Nixon, Eric R. Fossum, Timothy E. Steenwyk
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Publication number: 20020089753Abstract: A mirror element for a school bus is mounted to the front to provide wide angle viewing of the ground in front of and to the side of the bus. An upper portion of the mirror element which is generally dome shaped is treated to reduce glare resulting from possible sun rays reflected in the direction of the bus driver.Type: ApplicationFiled: January 9, 2001Publication date: July 11, 2002Applicant: Rosco, Inc.Inventor: Benjamin Englander
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Patent number: 6406152Abstract: A vehicular electrochromic rearview mirror system includes an interior electrochromic rearview mirror assembly and at least one exterior electrochromic rearview mirror assembly. Each mirror assembly includes an electrochromic reflective element that assumes a partial reflectance level in response to a signal applied thereto. A drive circuit applies a drive signal to each of the electrochromic reflective elements. The drive circuit may include a digital controller, a master drive circuit responsive to the digital controller to apply a first drive signal to one of the electrochromic reflective elements and a slave drive circuit responsive to the digital controller to apply a second drive signal to a second of the electrochromic reflective elements. The second drive signal may be derived from the first drive signal. The drive circuit may include a digital controller and a switching power supply controlled by the digital controller to produce a drive signal.Type: GrantFiled: October 9, 2001Date of Patent: June 18, 2002Assignee: Donnelly CorporationInventors: Eric J. Hoekstra, Kenneth L. Schierbeek
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Patent number: 6402328Abstract: Automatically dimming rearview mirrors allow a vehicle operator to view a scene generally behind the operator at a reflectivity level automatically adjusted to ambient light and glare levels. An automatically dimming mirror includes a dimming element having a variably reflective surface, the degree of reflectivity based on a control signal. An ambient light sensor is positioned to receive light from a region generally in front of the vehicle. The ambient light sensor outputs a discrete ambient light signal based on the amount of light incident on the ambient light sensor over an integration period. A glare sensor is positioned to view the scene generally behind the vehicle operator. The glare sensor outputs a discrete glare signal based on the amount of light incident on the glare sensor over an integration period. A dimming logic determines an ambient light level based on the ambient light signal. The glare integration period is determined based on the ambient light level.Type: GrantFiled: May 7, 1999Date of Patent: June 11, 2002Assignee: Gentex CorporationInventors: Jon H. Bechtel, Joseph S. Stam, Robert R. Turnbull, Robert H. Nixon, Eric R. Fossum
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Patent number: 6394614Abstract: A vehicle automatic anti-glare device comprises a LCD panel having a function of being converted into a “non-light filtering” mode from a “light filtering” mode as voltage is applied thereon; a reflection film installed at a back side of said LCD panel, when the said LCD panel is in a “light filtering” mode, said reflection film reflects the light of said LCD panel so that said LCD panel reflects images; a light sensor for detecting the light intensity of the light radiated to said LCD panel and sends out a signal; and a control module for receiving an output signal from said light sensor. As the signal is over is default value, then a pressure is applied to the LCD panel so that said LCD panel is converted into a “non-light filtering” mode. The control module has a data receiving device which receives the data from a microcomputer in a vehicle and then transfers said data to said LCD panel.Type: GrantFiled: December 17, 2001Date of Patent: May 28, 2002Inventor: Chia-Jung Chang
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Publication number: 20020041442Abstract: A vehicular rearview mirror system includes a rearview mirror assembly including a reflective element and a housing for the reflective element. The reflective element includes a plurality of reflective element segments. At least one of the reflective element segments is an electro-optic variable reflective element having a partial reflectance level that varies as a function of a drive signal. The vehicular rearview mirror system further includes directional light-sensing means for producing an output that varies as a function of a direction that light is sensed by the light-sensing means. The output is provided as a drive signal to the at least one of the reflective element segments. In this manner, the at least one of the reflective element segments has a partial reflectance level that is a function at least of direction that light is sensed by the light-sensing means.Type: ApplicationFiled: March 14, 2001Publication date: April 11, 2002Inventor: Frank A. Witt
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Publication number: 20020041443Abstract: The present invention relates to electrochromic mirrors and devices whose electrochromic element is composed of an electrochromic solid film and an electrolyte comprising redox reaction promoters and alkali ions and/or protons.Type: ApplicationFiled: September 18, 2001Publication date: April 11, 2002Inventors: Desaraju V. Varaprasad, Hamid Habibi, Ian A. McCabe, Niall R. Lynam, Mingtang Zhao, Craig A. Dornan
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Publication number: 20020039238Abstract: A vehicle automatic anti-glare device comprises a LCD panel having a function of being converted into a “non-light filtering” mode from a “light filtering” mode as voltage is applied thereon; a reflection film installed at a back side of said LCD panel, when the said LCD panel is in a “light filtering” mode, said reflection film reflects the light of said LCD panel so that said LCD panel reflects images; a light sensor for detecting the light intensity of the light radiated to said LCD panel and sends out a signal; and a control module for receiving an output signal from said light sensor. As the signal is over is default value, then a pressure is applied to the LCD panel so that said LCD panel is converted into a “non-light filtering” mode. The control module has a data receiving device which receives the data from a microcomputer in a vehicle and then transfers said data to said LCD panel.Type: ApplicationFiled: December 17, 2001Publication date: April 4, 2002Applicant: Chia-Jung CHANGInventor: Chia-Jung Chang
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Patent number: 6364494Abstract: This single-actuator-and-cam, remotely adjustable, exterior vehicle rear-view mirror provides a glare-free rear view, by switching between a high-reflectivity position and a low-reflectivity position at the same view adjustment. Exterior rear-view mirrors are repositioned by a single motor and rotary cam scanning all possible mirror positions. The single-motor mechanism increases reliability while accomplishing both directional alignment and day/night reflectivity selection, using a cam with positions for all predicted view positions, two reflectivity positions for each view. This invention works equally well with flat wedge mirrors and wide-angle convex wedge mirrors. Since each position is unique, each directional/reflectivity position is assigned a set of digital coordinates which can be stored for each vehicle driver and each glare condition, for an initial setting which can be easily, or even automatically, adjusted for changes as the driver desires.Type: GrantFiled: September 23, 1999Date of Patent: April 2, 2002Assignee: Anvik CorporationInventors: Carl C. Kling, Kanti Jain
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Patent number: 6364495Abstract: A back mirror 1 comprising an automatic glare-proof function of the present invention includes a battery E1, a daytime/nighttime deciding circuit 3 for deciding whether the current time is daytime or nighttime, an integrating circuit 4, an electronic switch FET1, a glare-proof/glare-non-proof deciding circuit 5 for deciding whether an EC mirror 2 is set to a glare-proof state or a glare-non-proof state, and a driving circuit 6 for applying a DC voltage to the EC mirror 2. The daytime/nighttime deciding circuit 3 is being constantly applied with a DC voltage from the battery E1. When the daytime/nighttime deciding circuit 3 has decided that the current time is daytime, the electronic switch FET1 is turned off, and when the daytime/nighttime deciding circuit 3 has decided that the current time is nighttime, the electronic switch FET1 is turned on.Type: GrantFiled: September 13, 2000Date of Patent: April 2, 2002Assignee: Murakami CorporationInventors: Mitsuyoshi Nagao, Hidenori Sato
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Publication number: 20020036830Abstract: A system apparatus, means and method for controlling a plurality of variable reflectance mirrors (or mirror segments), including a rearview mirror and side view mirrors, which change their reflectance level in response to a plurality of drive voltages applied thereto, for controlling the vehicle lighting system and for monitoring a vehicle interior for an automotive vehicle. The system includes a light sensing device and a control circuit formed as a single VLSI CMOS circuit. The light sensing device comprises a photosensor array having a field of view encompassing a vehicle interior. The logic and control circuit determines a background light signal from photosensor element signals generated by the photosensor elements in the photosensor array indicative of light levels incident on the photosensor elements. The circuit also determines a peak light signal in three different zones or sub-arrays of the photosensor array. The zones or sub-arrays may correspond to three mirrors or mirror segments.Type: ApplicationFiled: October 11, 2001Publication date: March 28, 2002Applicant: Donnelly CorporationInventors: Kenneth Schofield, Mark Larson
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Publication number: 20020034013Abstract: An antiglare and antireflection film is provided, which can be formed by a wet-coating method and which is excellent in the antireflection property, antifouling property, scratch resistance, clearness of transmitted image and planar uniformity. A polarizer and a liquid crystal display device using this film are also provided.Type: ApplicationFiled: July 11, 2001Publication date: March 21, 2002Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Tsutomu Arai, Shinichi Otani, Hidekazu Yamazaki, Hirohisa Hokazono
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Publication number: 20020030891Abstract: An electrochromic rearview mirror system for a vehicle includes an electrochromic reflective element having an electrochromic cell, wherein the reflective element colors to a partial reflectance level in response to a drive signal applied to the cell. The rearview mirror assembly additionally includes a drive circuit which applies a pulsed drive signal to the electrochromic cell in order to establish the partial reflectance level of the reflective element. The drive circuit controls the partial reflectance level as a function of the duty cycle of the pulsed drive signal, which has a pulse repetition rate of at least approximately 10 cycles per second and preferably at least approximately 20 cycles per second. The drive circuit additionally adjusts the amplitude of the pulses as a function of the voltage developed across the electrochromic cell.Type: ApplicationFiled: September 12, 2001Publication date: March 14, 2002Applicant: Donnelly CorporationInventor: Kenneth L. Schierbeek
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Publication number: 20020030892Abstract: A vehicular electrochromic rearview mirror system includes an interior electrochromic rearview mirror assembly and at least one exterior electrochromic rearview mirror assembly. Each mirror assembly includes an electrochromic reflective element that assumes a partial reflectance level in response to a signal applied thereto. A drive circuit applies a drive signal to each of the electrochromic reflective elements. The drive circuit may include a digital controller, a master drive circuit responsive to the digital controller to apply a first drive signal to one of the electrochromic reflective elements and a slave drive circuit responsive to the digital controller to apply a second drive signal to a second of the electrochromic reflective elements. The second drive signal may be derived from the first drive signal. The drive circuit may include a digital controller and a switching power supply controlled by the digital controller to produce a drive signal.Type: ApplicationFiled: October 9, 2001Publication date: March 14, 2002Applicant: Donnelly CorporationInventors: Eric J. Hoekstra, Kenneth L. Schierbeek
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Publication number: 20020027714Abstract: An electro-optic rearriew mirror system for a vehicle comprises a mirror housing (10) containing an electro-optic mirror unit (18). A pair of light sensors (24, 26) for sensing the ambient light level outside the vehicle are also mounted in the mirror housing. Control circuitry mounted on a PCB (36) is responsive to a signal (34) from the light sensors (24, 26) to establish a drive voltage for the electro-optic mirror unit (18). The PCB (36) is mounted in a header (16) on the interior ceiling of the vehicle separate from the mirror housing (10).Type: ApplicationFiled: October 9, 2001Publication date: March 7, 2002Applicant: Donnelly Mirrors Limited of NaasInventors: Sean J. Fletcher, Kenneth Schofield, Patrick J. Lawlor
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Patent number: 6343865Abstract: A non-glare film 10 is composed of a non-glare layer 18 formed by coating a transparent base film 12 of TAC or the like with a coating material obtained by mixing a light transmissive diffusing material 14 of resin beads and the like in a light transmissive resin 16, and a low refractive index layer 20 composed of a silicon-containing vinylidene fluoride copolymer, said low refractive index layer 20 being laminated onto the surface of the non-glare layer, in which the haze value on the surface of the non-glare layer 18 is 7 to 30 and the haze value inside the non-glare layer 18 is 1 to 15, and when the non-glare film is attached onto the surface of a display panel, it suppresses degradation in contrast and furthermore prevents face-glare, reflecting-in and whitening.Type: GrantFiled: February 10, 1999Date of Patent: February 5, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventor: Hiroko Suzuki
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Patent number: RE38190Abstract: This single-actuator-and-cam, remotely adjustable, exterior vehicle rear-view mirror provides the driver with glare-free viewing toward the rear of the vehicle, by switching between a high-reflectivity position and a low-reflectivity position at the same view adjustment. The exterior rear-view mirrors are repositioned with only a single motor working with a rotary cam to scan all possible mirror positions. The single-motor mechanism increases the reliability of the mirror system. The single motor accomplishes both the directional alignment and the day/night reflectivity adjustment of the mirror by use of a cam which has positions for all predicted view positions, with two reflectivity positions for each view. This invention works equally well with flat wedge mirrors and wide-angle convex wedge mirrors.Type: GrantFiled: May 30, 2001Date of Patent: July 22, 2003Assignee: Anvik CorporationInventors: Kanti Jain, Marc Zemel, Nestor O. Farmiga, Carl C. Kling