With Absorption Means Patents (Class 359/614)
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Patent number: 7777172Abstract: Optical sensors containing reduced amounts of cross talk, as well as methods for making and using such sensors are described. The sensors contain a light absorption coating that is placed on a portion of the external surface of the optical sensor near the detector. This absorption coating reduces the amount of cross talk by reducing the amount of light reflected inside a transparent package of the sensor. As well, the coating can also reduce the amount of ambient and/or stray light that enters the sensor. The coating adds little cost or complexity to the manufacturing process for the sensors, yet reduces the cross talk without substantially increasing the size of the sensor or without increasing any reliability risks. Other embodiments are also described.Type: GrantFiled: May 19, 2008Date of Patent: August 17, 2010Assignee: Fairchild Semiconductor CorporationInventor: Thierry Hernoult
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Publication number: 20100195311Abstract: It is an object of the present invention to provide an optical layered body which can attain properties such as an antiglare property, scintillation prevention and black color reproducibility such as gloss blackness simultaneously. An optical layered body comprising a light-transmitting substrate and an antiglare layer provided on the light-transmitting substrate, wherein the antiglare layer has a surface roughness on the outermost surface, and wherein in the optical layered body, a mean spacing of tops of local peak of profile S is 0.045 mm or more and 0.Type: ApplicationFiled: August 16, 2007Publication date: August 5, 2010Inventors: Gen Furui, Yukimitsu Iwata, Takashi Kodama, Yoshihiro Nishimura, Koichi Mikami
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Patent number: 7766493Abstract: The present disclosure provides optical devices having an asymmetric viewing area imparting improved optical properties to the device.Type: GrantFiled: July 22, 2005Date of Patent: August 3, 2010Assignee: Luminoz, Inc.Inventors: Terence Alfred Cooper, Adnan Malik, Yu Huang
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Publication number: 20100190113Abstract: On a multilayer film mirror, a protective layer is formed having a varied composition in the depth direction. The protective layer includes an interface side layer formed on a thin film layer, i.e., the outermost layer of a multilayer film, a surface side layer provided on the interface side layer as the outermost surface of an optical element, and an intermediate layer. The interface side layer has properties such as providing relative absorption of non-exposure light from a light source. The surface side layer suppresses oxidation of the surface of the multilayer film.Type: ApplicationFiled: July 24, 2009Publication date: July 29, 2010Inventors: Katsuhiko Murakami, Takaharu Komiya
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Publication number: 20100182701Abstract: An optical film used as a lens comprises at least a plastic layer (1) and a photochromic layer (2), the photochromic layer (2) is boned between two plastic layers (1) such that avoiding non-uniform dyeing and preventing the photochromic layer (2) from breaking off. One of a Polarizing layer (3), a UV absorbing layer (4) and a dying layer (5) or any combination of them can be also bonded between the two plastic layers (1).Type: ApplicationFiled: April 26, 2007Publication date: July 22, 2010Inventor: Jinjia Wu
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Publication number: 20100177398Abstract: An optical element includes a substrate including protruding structures on the surface and a hard coat layer formed on the substrate. An irregular shape is formed by the structures. An irregular shape resembling the irregular shape of the substrate is formed on a surface of the hard coat layer and is smoother than the that of the substrate. The size of bottoms of the structures changes at random within the range of the minimum distance Rm to the maximum distance RM (Rm: minimum value of the shortest distance from the center of gravity of the bottom of the structure to the rim of the bottom, RM: maximum value of the longest distance from the center of gravity of the bottom of the structure to the rim of the bottom). Neighboring structures have bottoms in contact or substantially in contact with one another. Rm and RM satisfy Rm/RM?0.9.Type: ApplicationFiled: January 6, 2010Publication date: July 15, 2010Applicant: SONY CORPORATIONInventors: Hitoshi Watanabe, Atsushi Uchida, Masayuki Ishiwata, Mikihisa Mizuno, Morio Tominaga, Eiki Ooyanagi
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Publication number: 20100165468Abstract: An antireflection structure having a high antireflection effect is provided. An antireflection structure (50) reduces reflection of light having a wavelength equal to or larger than a predetermined wavelength, and absorbs the light whose reflection is reduced. The antireflection structure (50) includes a base structure portion (7) which is configured to have a plurality of structural units (70) arranged on a reference plane, and each having a tilted surface (71) so that an angle between the first side surface (71) and a reference plane (51) is a predetermined angle, and a plurality of fine concave/convex portions (8, 8, . . . ) which are formed on a surface of the base structure portion (7), and arranged within a cycle equal to or smaller than the predetermined wavelength.Type: ApplicationFiled: September 3, 2008Publication date: July 1, 2010Inventors: Kazuhiro Yamada, Takamasa Tamura, Yasuhiro Tanaka
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Publication number: 20100165469Abstract: An optical filter including: a base film; and a function incorporation layer on the base film and for shielding electromagnetic interference and absorbing external light, the function incorporation layer having a cross mesh pattern, wherein the cross mesh pattern includes a plurality of pattern lines, and wherein at least a part of the cross mesh pattern protrudes from a surface of the function incorporation layer facing toward the reflection prevention layer.Type: ApplicationFiled: December 16, 2009Publication date: July 1, 2010Inventors: Cha-Won Hwang, Sang-Mi Lee
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Publication number: 20100142056Abstract: An optical filter wherein a hard coating layer and an electromagnetic shielding layer are integrally formed and a method of manufacturing the optical filter. The optical filter includes a base film, and a hard coating layer formed on one surface of the base film, the hard coating layer having conductive substances positioned in a region adjacent to the base film. The method includes preparing a light-transmissive base film; coating a liquid hard coating raw material on one surface of the base film, the hard coating raw material having conductive substances mixed therewith; and curing the hard coating raw material in the state that the conductive substances are concentrated on a region adjacent to the base film, and the hard coating raw material is formed between and on the conductive substances.Type: ApplicationFiled: November 25, 2009Publication date: June 10, 2010Inventors: Seung-Goo Baek, Sung-Yong Lee, Cha-Won Hwang, Sang-Mi Lee, Do-Hyuk Kwon
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Publication number: 20100128350Abstract: An image assembly may include a substrate having a face, a first optical layer and at least one spacer member. The imaging assembly may also include an anti-reflection structure. The at least one spacer member may be arranged between the substrate and the first optical layer to define an air gap therebetween. The anti-reflection structure may be coupled to at least part of the face and at least one of the first optical layer and the at least one spacer member. The anti-reflection structure may also include a plurality of projections having dimensions smaller than a wavelength of radiation to be imaged by the imaging assembly.Type: ApplicationFiled: November 24, 2009Publication date: May 27, 2010Applicant: STMicroelectronics (Research & Development) LimitedInventors: Ewan FINDLAY, Colin MCGARRY
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Patent number: 7718953Abstract: Described herein are electromagnetic traps or tweezers. Desired results are achieved by combining two recently developed techniques, 3D negative refraction flat lenses (3DNRFLs) and optical tweezers. The very unique advantages of using 3DNRFLs for electromagnetic traps have been demonstrated. Super-resolution and short focal distance of the flat lens result in a highly focused and strongly convergent beam, which is a key requirement for a stable and accurate electromagnetic trap. The translation symmetry of 3DNRFL provides translation-invariance for imaging, which allows an electromagnetic trap to be translated without moving the lens, and permits a trap array by using multiple sources with a single lens.Type: GrantFiled: April 12, 2007Date of Patent: May 18, 2010Assignee: University of DelawareInventors: Dennis W. Prather, Zhaolin Lu, Janusz Murakowski, Shouyuan Shi, Garrett Schneider
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Publication number: 20100103525Abstract: An optical sheet capable of enhancing contrast is provided. The optical sheet includes a layer configured to control light incident on the layer and then allow the light to exit towards the observer side. The optical sheet includes: an optical functional sheet layer (12) having multiple prisms (13, 13, . . . ) capable of transmitting light and multiple light-absorbing parts (14, 14, . . . ) capable of absorbing light, the multiple prisms and multiple light-absorbing parts being arranged alternately along a sheet plane of the optical sheet; and an electromagnetic-wave shield layer (12). The electromagnetic-wave shield layer (12) is positioned on a side opposite to the observer side relative to the optical functional sheet layer.Type: ApplicationFiled: December 11, 2007Publication date: April 29, 2010Applicant: Dai Nippon Printing Co., Ltd.Inventors: Tsuyoshi Kashiwagi, Yousuke Ezaki, Yukihiro Makita, Takayuki Niijima
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Patent number: 7697205Abstract: An anti-reflection structure; includes: a plurality of convex parts arranged at pitches each of which is shorter than a wave length of a visible light ray, each of the convex parts being formed into one of a substantially truncated cone and a substantially truncated pyramid, each including: i) a base face formed into one of a base circle and a base polygon inscribed in the base circle, a) the base circle and b) the base circle circumscribing about the base polygon each having a base diameter Db meeting the following expression: 100 nm<Db<380 nm, ii) an upper face formed into one of an upper circle and an upper polygon inscribed in the upper circle, a) the upper circle and b) the upper circle circumscribing about the upper polygon each having an upper diameter Du meeting the following expression: 5 nm<Du<50 nm.Type: GrantFiled: February 28, 2007Date of Patent: April 13, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Yuji Noguchi, Takayuki Fukui
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Publication number: 20100079870Abstract: The present disclosure is directed to a film for reducing reflections of ambient light on a display screen while maintaining efficient transmission of light emitted from the display screen. The film has a light receiving face and a light emitting face, and includes an arrayed plurality of truncated tapered structures projecting from the light receiving face to the light emitting face. Each of the plurality of truncated tapered structures has a relatively wider base positioned at the light receiving face, and a relatively narrowed top positioned at the light emitting face. The plurality of truncated tapered structures define a void region in the vicinity of the light emitting face between adjacent ones of the plurality of truncated tapered structures. The film further includes a dark material applied in the void region.Type: ApplicationFiled: September 26, 2008Publication date: April 1, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Jiangrong Cao
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Patent number: 7686463Abstract: A view angle control sheet which can suppress a decrease in screen brightness is provided. Lens portions having trapezoidal shapes in cross section are arranged at predetermined intervals, and a wedge-shaped portion between the lens portions adjacent to each other is filled with the same material as the lens portion or with a material different from the lens portion. In the wedge-shaped portion, a bottom surface is provided on a screen image side while a leading edge is provided on an observer side, and at least a slope portion of the wedge-shaped portion is made of a material having a refractive index lower than that of a lens portion material.Type: GrantFiled: April 26, 2005Date of Patent: March 30, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventor: Masahiro Goto
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Publication number: 20100067097Abstract: In a substrate for a display apparatus, the substrate includes a base substrate and a shielding layer formed on a surface of the base substrate. The shielding layer has an energy bandgap corresponding to a reference wavelength of external light. Thus, the shielding layer blocks light having wavelength equal to or less than the reference wavelength, so that a wavelength band of light may be adjusted.Type: ApplicationFiled: September 2, 2009Publication date: March 18, 2010Inventors: Seok-Joon HONG, Min-Ho YOON, Nam-Seok ROH, Woo-Jae LEE, Jong-Seong KIM
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Publication number: 20100053761Abstract: A hybrid optical film, a display device having the same, and a method of manufacturing the same are provided. The hybrid optical film is provided in front of a display module of a display device to serve as a display filter. The hybrid optical film is in the form of a single-film. The hybrid optical film includes a film substrate; a first optical pattern directly formed on one side of the film substrate; and a second optical pattern directly formed on the other side of the film substrate. The hybrid optical film can reduce manufacturing costs due to a simplified structure and improve productivity due to a simplified manufacturing process.Type: ApplicationFiled: August 28, 2009Publication date: March 4, 2010Inventors: Ji Yoon YEOM, Sung Nim Jo, Eun Young Cho, Hyun Sook Kim, Joo Sok Kim
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Publication number: 20100033827Abstract: The present invention relates to an optical device for privacy or contrast enhancement of a viewing display. Also disclosed are a system including the optical device and methods of improving privacy or contrast of a viewing display, such as a plasma display panel, a liquid crystal display panel, an inorganic light emitting diode display panel, or an organic light emitting diode display panel.Type: ApplicationFiled: August 7, 2008Publication date: February 11, 2010Applicant: Reflexite CorporationInventors: Michael F. Foley, James F. Munro
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Publication number: 20100027127Abstract: An antiglare film and an antiglare sheet with which an image display apparatus excelling in contrast while maintaining excellent antiglare performance is obtained, and a simple process for producing them are provided. In the antiglare film of the present invention, a rugged shape in a first direction is substantially different from a rugged shape in a second direction perpendicular to the first direction. Preferably, an average gradient angle ?a1 of the rugged shape in the first direction is larger than an average gradient angle ?a2 of the rugged shape in the second direction. More preferably, a difference ??a=?a1??a2 between the average gradient angle ?a1 and the average gradient angle ?a2 is 0.5° to 30°.Type: ApplicationFiled: September 12, 2007Publication date: February 4, 2010Applicant: NITTO DENKO CORPORATIONInventors: Naoto Ooe, Tatsuki Nagatsuka
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Publication number: 20100002306Abstract: A view angle control sheet which can suppress a decrease in screen brightness is provided. Lens portions having trapezoidal shapes in cross section are arranged at predetermined intervals, and a wedge-shaped portion between the lens portions adjacent to each other is filled with the same material as the lens portion or with a material different from the lens portion. In the wedge-shaped portion, a bottom surface is provided on a screen image side while a leading edge is provided on an observer side, and at least a slope portion of the wedge-shaped portion is made of a material having a refractive index lower than that of a lens portion material.Type: ApplicationFiled: September 16, 2009Publication date: January 7, 2010Inventor: Masahiro GOTO
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Patent number: 7637622Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.Type: GrantFiled: October 11, 2005Date of Patent: December 29, 2009Assignee: 3M Innovative Properties CompanyInventors: Bengt Garbergs, Marcus Wiederkehr
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Publication number: 20090300810Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.Type: ApplicationFiled: August 13, 2009Publication date: December 10, 2009Inventors: Bengt Garbergs, Marcus Wiederkehr
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Publication number: 20090295686Abstract: A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) which includes an upper substrate on which a plurality of black matrices are formed; and an external light shielding sheet which is disposed at a front of the PDP and includes a base unit and a plurality of pattern units that are formed on the base unit and that have a lower refractive index than the base unit. A distance between a pair of adjacent black matrices is 4-12 times greater than a distance between a pair of adjacent pattern units. Therefore, it is possible for a plasma display device to effectively realize black images and enhance bright room contrast with the aid of an external light shielding sheet which is disposed at a front of a PDP and which absorbs and shields as much external light incident upon the PDP as possible.Type: ApplicationFiled: November 6, 2006Publication date: December 3, 2009Inventors: Ji Hoon Sohn, Hong Rae Cha, Sam Je Cho, Woo Sung Jang, Woon Seo Shin
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Publication number: 20090273844Abstract: A privacy filter comprises a first light transmissive film having a first plurality of rounded, optically opaque regions extending into a surface thereof. The first plurality of rounded, optically opaque regions are positioned to allow a viewer to view an image through the privacy filter within a range of viewing angles and to block viewing of the image through the privacy filter outside the range of viewing angles.Type: ApplicationFiled: September 30, 2008Publication date: November 5, 2009Inventors: Jung Suk Lee, Fred C. Thomas, Paul M. Hupman
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Publication number: 20090268302Abstract: An exemplary light blocking plate includes a through hole defined at the center thereof and an opaque portion surrounding the through hole. The light blocking plate is comprised of a blackening agent and a PDMS.Type: ApplicationFiled: December 3, 2008Publication date: October 29, 2009Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Hsin-Hung CHUANG
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Patent number: 7586664Abstract: An electrochromic switchable transparency, e.g. a window and/or a mirror includes an electrochromic switchable medium between a pair of electrode assemblies. At least one of the electrode assemblies is transparent to visible light and includes an electrode over a surface. In one nonlimiting embodiment of the invention, the electrode has two electrically conducting layers and a bridging layer between and interconnecting the two electrically conducting layers. In one nonlimiting embodiment, the bridging layer includes a high electrically resistance connecting layer to provide the electrode with a heating layer to heat the surface and/or a current conducting layer to pass current to the medium. In another nonlimiting embodiment, the bridging layer includes an electrically connecting layer to pass current to electrically enhance the first electrically conductive layer.Type: GrantFiled: June 22, 2006Date of Patent: September 8, 2009Assignee: PPG Industries Ohio, Inc.Inventor: Dennis J. O'Shaughnessy
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Publication number: 20090219622Abstract: A critically coupled optical resonator absorbs greater than 95% of incident light of the critical wavelength with an absorber layer less than 10 run thick.Type: ApplicationFiled: February 14, 2007Publication date: September 3, 2009Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Jonathan R. Tischler, Michael Scott Bradley, Vladimir Bulovic
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Patent number: 7568808Abstract: An optical observation instrument has a device (1) for protecting against incoming flare (40) arranged within the beam path of the instrument. The device contains a filter (22/30) tuned to the flare (40). The filter (22/30) is configured and arranged within the beam path such that the flare (40) transits the filter (22/30) at least two times.Type: GrantFiled: October 11, 2005Date of Patent: August 4, 2009Assignee: Hensoldt AGInventors: Volker Claudi, Matthias Heller
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Publication number: 20090153973Abstract: An exemplary lens (50) includes a central transparent portion (44) and a peripheral portion (35). The central transparent portion is configured for converging or diverging the light beams transmitted therethrough. The peripheral portion surrounds and extends from the central transparent portion. The peripheral portion is comprised of a shading material.Type: ApplicationFiled: June 19, 2008Publication date: June 18, 2009Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Ming-Chiang Tsai
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Patent number: 7547106Abstract: A method for modifying the appearance of a substrate is disclosed. The method includes providing a substrate having first and second opposing surfaces and depositing a reflectance modifying coating on at least a portion of the first surface of the substrate, wherein the second surface has a visible light reflectance (R1) ranging from 5 to 20 percent.Type: GrantFiled: July 29, 2005Date of Patent: June 16, 2009Assignee: PPG Industries Ohio, Inc.Inventors: Chia-Cheng Lin, Larry J. Shelestak
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Patent number: 7530699Abstract: An optical lens component includes a lens element with a mounting portion. The mounting portion has spaced parallel surfaces that extend perpendicularly to the optical axis of the lens element. At least one of the spaced parallel surfaces is provided with a light-scattering structure for coupling out light entering the mounting portion. A light absorber is provided to absorb light scattered from the light-scattering structure.Type: GrantFiled: July 1, 2003Date of Patent: May 12, 2009Assignee: Koninklijke Philips Electronics N.V.Inventors: Yelena Shulepova, Johan Francis Lurquin
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Publication number: 20090096972Abstract: An antiglare film includes an antiglare layer having a binder matrix, and particles A and particles B therein on a transparent substrate. A difference in density between the particles A and particles B is 0.2 g/cm3 or less. The quotient value (RA/H), which is obtained by division of the average diameter of the particles A (RA) by the average thickness of the antiglare layer (H), is in the 0.40-0.80 range. The quotient value (RB/RA), which is obtained by division of the average diameter of the particles B (RB) by the average diameter of the particles A (RA), is in the 0.20-0.60 range. The quotient value ((wA+wB)/wM), which is obtained by dividing the sum of the content of the particles A (wA) and that of the particles B (wB) in the antiglare layer (wA+wB) by the content of the binder matrix in the antiglare layer (wM), is in the 0.10-0.40 range. The quotient value (wB/wA), which is obtained by division of the content of the particles B (wB) by that of the particles A (wA) in the antiglare layer, is in the 0.Type: ApplicationFiled: October 6, 2008Publication date: April 16, 2009Applicant: Toppan Printing Co., Ltd.Inventor: Hisamitsu Kameshima
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Publication number: 20090097125Abstract: A vehicle glare reduction system is provided, which improves the visual acuity of the vehicle operator in vehicles having a light-colored dashboard. The system includes a dashboard having an upper surface from which dashboard light is reflected; a windshield having an inner and outer surface, the windshield surface configured to reflect the dashboard reflected light; and a polarization layer disposed on the dashboard upper surface, adapted to polarize the dashboard reflected light, wherein the polarized light is not reflected by the windshield inner surface.Type: ApplicationFiled: May 8, 2008Publication date: April 16, 2009Applicant: PPG INDUSTRIES OHIO, INC.Inventor: Calum H. Munro
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Publication number: 20090080084Abstract: A beam terminator for a high-power laser beam comprises a thermally conductive body including a beam-trapping chamber. A tapered spiral channel extends into the conductive body for guiding the beam. The beam is partially absorbed while propagating along the channel to the trapping chamber. What remains of the beam is absorbed in the trapping chamber.Type: ApplicationFiled: September 24, 2007Publication date: March 26, 2009Inventors: H. Yang Pang, Donald E. Harryman, William Clayton Brand
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Patent number: 7505104Abstract: An antiglare antireflective film is provided and includes: a transparent substrate; and at least one layer. The antiglare antireflective film having a surface having asperities in which: 15% to 70% of the total asperities are asperities, each having a tilt angle of 1° or below, which a line normal to each asperity profile form with a line normal to the transparent substrate; and at most 3% of the total asperities are asperities, each having the tilt angle of 10° or above.Type: GrantFiled: September 14, 2006Date of Patent: March 17, 2009Assignee: FUJIFILM CORPORATIONInventors: Jun Watanabe, Shinya Kato
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Publication number: 20090059379Abstract: An optical film includes: a film body having a first surface formed with a groove pattern and a second surface formed with a bump pattern, which are formed in a single body; and a light absorption member formed inside the groove pattern.Type: ApplicationFiled: April 2, 2008Publication date: March 5, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Sung-hwan LIM, Young-ki Shon, Tae-soon Park
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Publication number: 20090040619Abstract: The present invention provides an optical filter for display apparatus. The optical filter includes a glass substrate, and an external light shield including an external light shielding pattern comprising a plurality of external light shielding parts including a light-absorbing substance, wherein the external light shield is formed by coating one side of the glass substrate with a transparent resin and the plurality of external light shielding parts are formed on the exposed surface of the transparent resin.Type: ApplicationFiled: August 5, 2008Publication date: February 12, 2009Inventors: Jae Young CHOI, Gi-Mo Yang, Dae Chul Park
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Publication number: 20090021828Abstract: A screen includes plural three-dimensional portions having a concave shape arranged at a front surface side of a screen substrate, wherein the three-dimensional portions are disposed so that the number of the three-dimensional portions provided in a range of a given length along a first direction on the screen substrate which is determined corresponding to at least either one of a direction of a chief ray and a chief direction of outside light is larger than the number of three-dimensional portions provided in a range of the given length along a second direction crossing the first direction and in which the plural three-dimensional portions are arranged so that at least two three-dimensional portions of the three-dimensional portions provided in the range of the given length along the first direction contact each other.Type: ApplicationFiled: July 14, 2008Publication date: January 22, 2009Applicant: Seiko Epson CorporationInventors: Akira Shinbo, Hiroyuki Shindo
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Publication number: 20090015927Abstract: An antiglare film includes a base material and an antiglare layer which is disposed on at least one surface of the base material and which contains fine particles and a resin, wherein the fine particles constitute aggregates mainly in in-plane directions, and gradual unevenness is disposed on the surface of the antiglare layer through aggregation of the fine particles.Type: ApplicationFiled: July 10, 2008Publication date: January 15, 2009Applicant: SONY CORPORATIONInventors: Shinichi Matsumura, Yumi Haga, Tsutomu Nagahama, Hitoshi Watanabe
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Patent number: 7473000Abstract: A solar concentrator may include a substantially planar surface, a curved primary mirror having a first perimeter, at least a portion of the first perimeter being in contact with the substantially planar surface, a secondary mirror disposed between the substantially planar surface and the curved primary mirror, the secondary mirror associated with a desired focal area, and a shield element disposed between the substantially planar surface and the curved primary mirror. The shield element is to prevent a portion of light reflected by the secondary mirror from reaching the primary mirror. In some aspects, a portion of the shield element may be disposed between the substantially planar surface and a plane which is substantially parallel to the substantially planar surface and which includes a portion of the desired focal area. The shield element may include a reflective surface to reflect light received from the secondary mirror toward the desired focal area.Type: GrantFiled: December 7, 2006Date of Patent: January 6, 2009Assignee: Solfocus, Inc.Inventors: Mark Spencer, Stephen J. Horne
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Publication number: 20080316604Abstract: A display device comprises a display arrangement having inherent non-uniformity of an output intensity across the display area and an optical attenuator arrangement (205,207) positioned in front of the display arrangement and in registration with the display area, wherein the optical attenuator arrangement has a light attenuation characteristic that varies across the display area and is adapted to optically reduce the inherent non-uniformity of the output intensity.Type: ApplicationFiled: October 30, 2006Publication date: December 25, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Peter-Andre Redert, Siebe Tjerk De Zwart
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Publication number: 20080296478Abstract: Optical sensors containing reduced amounts of cross talk, as well as methods for making and using such sensors are described. The sensors contain a light absorption coating that is placed on a portion of the external surface of the optical sensor near the detector. This absorption coating reduces the amount of cross talk by reducing the amount of light reflected inside a transparent package of the sensor. As well, the coating can also reduce the amount of ambient and/or stray light that enters the sensor. The coating adds little cost or complexity to the manufacturing process for the sensors, yet reduces the cross talk without substantially increasing the size of the sensor or without increasing any reliability risks. Other embodiments are also described.Type: ApplicationFiled: May 19, 2008Publication date: December 4, 2008Inventor: Thierry Hernoult
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Publication number: 20080285135Abstract: A display device comprises a light emitting picture element (120) and a contrast enhancing element (110). The contrast enhancing element comprises a plurality of wave guides (216) separated by interstitial regions (212) being formed as narrowing recesses. An interface between a wave guide (216) and an interstitial region (212) is provided with a reflective layer. The narrowing recesses form a dead end for incident ambient light which is efficiently absorbed by the contrast enhancing element. On the other hand, light emitted by the picture element (120) of the display device is transmitted through the wave guides (216). As a result, the display device has a relatively high contrast ratio, particularly under bright ambient light conditions.Type: ApplicationFiled: November 24, 2004Publication date: November 20, 2008Inventor: Ralph Kurt
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Patent number: 7449679Abstract: A method and apparatus for manipulating particles (micro, nano, and pico) having one or more characteristics with an optical trap formed by modulating a laser beam with a Diffractive Optical Element (DOE). At least one characteristic of the material is selected; and a laser beam having a selected wavelength corresponding to the at least one selected characteristic of the material is generated. Values of the DOE are calculated corresponding to the at least one selected characteristic of the material. The beam and the DOE are modulated to produce a holographic optical trap having properties corresponding to the at least one selected characteristic; the trap is focused to a beam focus or selected spot size; and the beam focus is located near a particle location for trapping the particle therein.Type: GrantFiled: March 15, 2005Date of Patent: November 11, 2008Assignee: Arryx, Inc.Inventors: Joseph Plewa, Evan Tanner, Daniel Mueth, Lewis Gruber, Kenneth Bradley
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Publication number: 20080239497Abstract: An interference coating between a display and an intended viewing area that selectively absorbs incident optical energy in at least one first wavelength region and selectively transmits incident optical energy in at least one second wavelength region.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Inventor: Barret Lippey
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Publication number: 20080225398Abstract: A beam-catching device is provided for a cutting-beam processing machine configured to deliver a cutting beam to a workpiece. The beam-catching device includes a housing which has a line-like opening pointing toward the cutting beam, the cutting beam discharging from the underside of the workpiece during processing of the workpiece and entering the housing through the opening, and a solid medium disposed within the housing and configured to move relative to the opening of the housing in a direction crossing the cutting beam in order to absorb energy.Type: ApplicationFiled: March 6, 2008Publication date: September 18, 2008Applicant: TRUMPF WERKZEUGMASCHINEN GMBH + CO. KGInventors: Martin Blaser, Martin Petera
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Publication number: 20080212190Abstract: An antiglare film is disclosed including a transparent substrate; and an antiglare layer including a binder matrix and a particle, wherein reflectivity of 5° angle of a surface of the antiglare film which surface is in the antiglare layer side among both sides of the antiglare film is 2.4-4.4%, wherein image clarity (C(0.5)+C(1.0)+C(2.0)) measured by reflection method on an antiglare layer side is 20-70%, and wherein difference in refractive index between the binder matrix and the particle is equal to or less than 0.07.Type: ApplicationFiled: September 28, 2007Publication date: September 4, 2008Applicant: Toppan Printing Co., Ltd.Inventors: Hisamitsu Kameshima, Tomoya Oohira, Tomo Yoshinari, Kae Takahashi
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Patent number: 7419272Abstract: An optical element having a front side and a back side operates in an ambient lit mode and a backlit mode. The optical element includes a diffusely reflecting layer facing the front side for reflecting ambient light. A light absorbing layer faces the back side and is positioned to prevent back light from illuminating the diffusely reflecting layer. A plurality of light transmitting regions extend through the light absorbing layer and the diffusely reflecting layer for permitting back light to pass through in a restricted angular range without illuminating the diffusely reflecting layer.Type: GrantFiled: December 8, 2005Date of Patent: September 2, 2008Assignee: 3M Innovative Properties CompanyInventors: Kay-Uwe Schenke, Guido Hitschmarin, Stefan O. Dietrich, Robert Bennett, Paul E. Humpal, Keith M. Kotchick
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Publication number: 20080170403Abstract: A system and method optimizes a visualization of a display of a mobile device. The mobile device comprises a housing, a display, and an adaptive device. The display is situated at least partially in an opening of the housing. The adaptive device is disposed at least partially one of within the housing and in the opening. The adaptive device has a property to improve a visibility of the display. The property is related to an ambient lighting condition.Type: ApplicationFiled: April 30, 2007Publication date: July 17, 2008Inventor: Vladimir Gurevich
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Publication number: 20080130124Abstract: Embodiments of the invention include a power beam receiver that will not reflect light beyond the regulatory limits for human exposure, except along paths known to be without people. In one embodiment, a baffle is used to trap reflections from surfaces of the receiver. In a second embodiment, the power beam receiver is arranged so that reflections are reflected to another surface of the receiver. These surfaces may be designed as a retroreflector. In a third embodiment, an intentional scattering medium is added to the power beam receiver so that parallel light rays incident on the front surface of the power beam receiver are scattered through a series of angles. As a result, any light escaping the system is diffused.Type: ApplicationFiled: November 21, 2007Publication date: June 5, 2008Applicant: PowerBeam, Inc.Inventor: David S. Graham