Embedded Particles Patents (Class 359/452)
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Patent number: 12117720Abstract: The present application provides a projection screen and a projection system. The projection screen includes an optical structure layer and a reflective layer, where the optical structure layer includes a plurality of microstructure units; each of the plurality of microstructure units include a first sidewall and second sidewalls; the reflective layer covers at least part of the first sidewall to form a first working surface, and the reflective layer covers at least part of the second sidewalls to form second working surfaces, respectively; the first working surface deflects an input image beam, and at least part of the input image beam is transmitted to viewer's field and the second working surfaces; and the second working surfaces deflect an input image beam came from the first working surface, and the input image beam came from the first working surface is transmitted to the viewer's field. The present application improves the brightness evenness of the projection screen.Type: GrantFiled: May 3, 2022Date of Patent: October 15, 2024Assignee: APPOTRONICS CORPORATION LIMITEDInventors: Lin Wang, Wei Sun, Xiaofeng Tang, Fei Hu, Yi Li
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Patent number: 12117158Abstract: Apparatus and methods are provided. The apparatus may include a light-emitting diode (“LED”) light source having a front and a back. The apparatus may include a light-transmitting body. The light-transmitting body may have a surface. The surface may define a pattern. The light-transmitting body may have light-scattering grains bonded to the surface. The light-transmitting body may be disposed in a position that is in front of the LED light source. It may be that no structure that is configured to maintain the position intervenes between the LED light source and the light-transmitting body. The light-transmitting body may include glass, polymer or any other suitable material. The pattern may be formed in the glass, polymer or other material. The pattern may be molded, blown, grinded, sawn, cut, milled, drilled, applied or of any other approach.Type: GrantFiled: May 28, 2024Date of Patent: October 15, 2024Assignee: Wangs Alliance CorporationInventors: Shelley S. Wald, Wai Ho Choy, Derrick A. Wald, Changyong Li
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Patent number: 12078337Abstract: Apparatus and methods for enhanced lighting. The apparatus may include a light-transmitting body. The apparatus may include a light projector. The projector may be configured to propagate into the light-transmitting body an incoming incoherent light. The projector may be configured to propagate into the light-transmitting body an incoming visible coherent light. Emerging coherent light within a visible wavelength rage attributable to the incoming visible coherent light may have a first intensity. The first intensity may be greater than a second intensity. The second intensity may be an intensity of any emerging coherent light that is within the wavelength range and is attributable to the incoming incoherent light. Emerging light may be light that emerges from the light-transmitting body.Type: GrantFiled: February 16, 2024Date of Patent: September 3, 2024Assignee: Wangs Alliance CorporationInventors: Shelley S. Wald, Wai Ho Choy, Derrick A. Wald
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Patent number: 12052531Abstract: A projector controller includes an object detector and control electronics, and is configured to protect audience members from intense light imposing an exclusion zone in front of a projector. The object detector is configured to optically sense a presence of an object in a detection region beneath the exclusion zone and above the audience members. The control electronics is configured to control the projector when the object detector indicates the presence of the object in the detection region. A method for protecting audience members from intense light imposing an exclusion zone in front of an output of a projector includes: (i) optically sensing a presence of an object in a detection region between the exclusion zone and the audience members, and (ii) controlling the projector when the presence of the object is sensed in the detection region.Type: GrantFiled: December 20, 2021Date of Patent: July 30, 2024Assignee: Dolby Laboratories Licensing CorporationInventors: John Frederick Arntsen, Juan P. Pertierra, Martin J. Richards, Barret Lippey, Christopher John Orlick, Douglas J. Gorny
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Patent number: 11913634Abstract: Apparatus and methods for enhanced lighting. The apparatus may include a light-transmitting body. The apparatus may include a light projector. The projector may be configured to propagate into the light-transmitting body an incoming incoherent light. The projector may be configured to propagate into the light-transmitting body an incoming visible coherent light. Emerging coherent light within a visible wavelength rage attributable to the incoming visible coherent light may have a first intensity. The first intensity may be greater than a second intensity. The second intensity may be an intensity of any emerging coherent light that is within the wavelength range and is attributable to the incoming incoherent light. Emerging light may be light that emerges from the light-transmitting body.Type: GrantFiled: May 5, 2022Date of Patent: February 27, 2024Assignee: Wangs Alliance CorporationInventors: Shelley S. Wald, Wai Ho Choy, Derrick A. Wald
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Patent number: 11782336Abstract: A projection screen includes a screen board, a woven cloth, an adhesive layer, a frame, and elastic connecting members. The woven cloth is arranged on a back of the screen board, and an edge of the woven cloth is outside an edge of the screen board. The adhesive layer is connected to the screen board and the woven cloth respectively. The frame is arranged on a peripheral side of the screen board. First ends of the elastic connecting members are connected to the woven cloth, and second ends of the elastic connecting members are connected to the frame, so as to stretch the woven cloth and the screen board to a flat state by virtue of tension of the elastic connecting members.Type: GrantFiled: September 30, 2021Date of Patent: October 10, 2023Assignee: HISENSE LASER DISPLAY CO., LTDInventors: Jie Dai, Zhe Xing
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Patent number: 11677917Abstract: Systems and methods of rendering DCI-compliant image data on Enhanced Dynamic Range (EDR) display systems are disclosed. One embodiment of an EDR projector system comprises a first modulator and a second modulator. One method for rendering DCI-compliant image data on an EDR projector system comprises: receiving input image data, said image data comprising a plurality of image formats; determining whether the input image data comprises DCI image data; if the input image data comprises DCI image data, then performing dynamic range (DR) processing on the DCI image data; and rendering the dynamic range processed DCI image data on the EDR projector system. One DR processing method is to set the first modulator to a desired luminance level—e.g., fully ON or a ratio of DCI max luminance to the EDR max luminance. In addition, a desired minimum level of luminance may be set for the EDR projector.Type: GrantFiled: September 13, 2021Date of Patent: June 13, 2023Assignee: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Martin J. Richards, Douglas J. Gorny
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Patent number: 11609487Abstract: A projection screen control method of one embodiment of the present disclosure includes irradiating a display member with first control light, and irradiating the display member with second control light, in which the irradiating the display member with the first control light and the irradiating the display member with the second control light are performed in sequence. The display member has a visible light transmittance or a visible light reflectance that varies depending on light, and contains a photochromic material, and the first control light and the second control light have different light intensities.Type: GrantFiled: March 7, 2019Date of Patent: March 21, 2023Assignee: SONY CORPORATIONInventors: Hidehiko Takanashi, Hideki Ono, Yui Ishii
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Patent number: 11534291Abstract: Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing symmetric or asymmetric optic with aspheric surface which redirects and/or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina.Type: GrantFiled: October 25, 2019Date of Patent: December 27, 2022Assignee: AMO Groningen B.V.Inventors: Robert Rosen, Hendrik A. Weeber, Carmen Canovas Vidal, Marrie Van Der Mooren, Dora Sellitri
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Patent number: 11320730Abstract: An article used as black or dark-colored front-projection screen includes two distinct diffusely reflecting scattering elements, taking the form of parallel sheets or planes, qualified first and second scattering elements, wherein the first scattering element is translucent or transparent and the second scattering element is of dark color.Type: GrantFiled: June 5, 2018Date of Patent: May 3, 2022Assignee: SAINT-GOBAIN GLASS FRANCEInventors: Cécile Ozanam, Patrick Gayout, Emmanuel Mimoun
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Patent number: 11150471Abstract: A diffuser for use in a head up display formed of an array of microlenses. The microlenses comprises both concave and convex microlenses to reduce surface discontinuities between adjacent lenses.Type: GrantFiled: September 5, 2017Date of Patent: October 19, 2021Assignee: BAE SYSTEMS plcInventor: Graham Laurence Hogg
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Patent number: 10663632Abstract: In an aspect, an illumination system (100) includes a light source (102) configured to generate a light beam (103), and a chromatic reflective unit (1) for being illuminated by the light beam (103). The chromatic reflective unit (1) includes a plurality of non-coplanar reflective surface sections (3?), and a chromatic diffusing layer (5) includes a plurality of nanoparticles (37) embedded in a matrix (39). The chromatic diffusing layer (5) is provided upstream of the plurality of reflective surface sections (3?) such that at least a portion of the light beam (103) passes through the chromatic diffusing layer (5) before and after being reflected by the plurality of non-coplanar reflective surface sections (3?). Chromatic diffusing layer (5) is further configured to provide for a specular reflectance that is larger in the red than in the blue and for a diffuse reflectance that is larger in the blue than in the red.Type: GrantFiled: July 15, 2015Date of Patent: May 26, 2020Assignee: CoeLux S.r.l.Inventors: Paolo Di Trapani, Davide Magatti
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Patent number: 10522777Abstract: Provided is a display device having a first pixel and a second pixel adjacent to the first pixel. The first pixel includes a first pixel electrode, a first EL layer over the first pixel electrode, and a second electrode over the first EL layer. The second pixel includes a second pixel electrode, a second EL layer over the second pixel electrode, and the second electrode over the second EL layer. The display device further possesses a first cap layer over the second electrode, a second cap layer over the first cap layer and overlapping with the first EL layer, and a third cap layer covering the second cap layer, overlapping with the first EL layer and the second EL layer, and in contact with the first cap layer in a region overlapping with the second EL layer.Type: GrantFiled: October 11, 2017Date of Patent: December 31, 2019Assignee: Japan Display Inc.Inventors: Takahiro Ushikubo, Norihisa Maeda
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Patent number: 10509225Abstract: In order to provide a transmission type screen having a flat scattered intensity within a predetermined scattering angle, a transmission type screen (50) according to the present invention comprising a first surface (51), and a second surface (52) opposed to the first surface (51), wherein: the first surface (51) is equipped with a microlens array (57) including a plurality of microlenses; the second surface (52) is equipped with a light diffusion surface (60); and a diffusion angle ratio of a diffusion angle of the light diffusion surface (60) relative to a diffusion angle of the microlens array (57) is not less than 0.2 and not more than 0.4.Type: GrantFiled: February 3, 2016Date of Patent: December 17, 2019Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tsuyoshi Chiba, Shogo Kubota
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Patent number: 10444614Abstract: A screen with a high flatness where no distortion arises in a central portion of the screen can be obtained. A first thickness of a portion other than a plurality of inclined portions that reflects to the front a obliquely-incident projection light is no more than 2 times a second thickness of the inclined portion. Moreover, a width is about 1550 mm, a height is about 900 mm, and when the reflective screen is suspended so a vertically-downward pulling load is about 3 kg, in a first region that includes the central portion of the reflective screen but does not include an end portion of the reflective screen, no shift arises in an image displayed on the reflective screen between when a reference line passing through a substantially central portion of the reflective screen at an incidence angle of about 15 degrees and when the reference line is projected at an incidence angle of about 60 degrees.Type: GrantFiled: May 17, 2017Date of Patent: October 15, 2019Assignee: ARISAWA MFG. CO., LTD.Inventor: Hajime Maruta
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Patent number: 10393924Abstract: A polarizer includes an adhesive, a first protective layer, a substrate layer, a second protective layer and a surface protective film. The surface protective film includes a plurality of first particles. Each of the first particles has a first particle size. The first particle size is greater than or equal to 10 ?m.Type: GrantFiled: August 30, 2017Date of Patent: August 27, 2019Assignee: AU OPTRONICS CORPORATIONInventors: Chien-Chi Chen, Yu-Han Chiang, Shang-Chiang Lin, Chen-Hsien Liao
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Patent number: 10288991Abstract: A paint composition comprises a carrier material, a plurality of ambient light absorbing pigment particles dispersed in the carrier material comprising a component that absorbs predetermined visible wavelengths, and a plurality of fluorescent pigment particles dispersed in the carrier material, wherein the fluorescent pigment particles emit a first color and the paint composition emits a second color different from the first color when illuminated by an ultraviolet light source. The paint composition can act as a video projection surface with usable screen gain.Type: GrantFiled: April 21, 2017Date of Patent: May 14, 2019Assignee: Disney Enterprises, Inc.Inventors: Daniel M. Joseph, Steven A. Johnson
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Patent number: 10288780Abstract: A reflective transparent screen according to the present invention comprises a light diffusion layer which comprises a binder and microparticles. The reflective transparent screen has a total light transmission of 60% or more and a parallel beam transmittance of 50% or more. The transparent screen has the diffuse reflectance light brilliance profile measured with a goniophotometer characterized to satisfy the conditions A and B.Type: GrantFiled: November 21, 2016Date of Patent: May 14, 2019Assignee: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Kousuke Yamaki, Akira Matsuo
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Patent number: 10168569Abstract: A light-diffusion member (7) includes: a substrate (39) having light-transmitting properties; a light-diffusion portion (40) on a face of the substrate (39) facing a display medium (6); and a light-blocking layer (41) on a part of the face of the substrate (39) facing the display medium (6) other than where the light-diffusion portion (40) is provided. The light-diffusion portion (40) includes: a light-emitting end face (40a) in contact with the substrate (39); and a light-incident end face (40b) facing, and being larger in area than, the light-emitting end face (40a). The adhesive layer (42) adheres to light-incident end face (40a) and partly (42a) encroaches into a space (43) between the light-diffusion portion (40) and light-blocking layer (41).Type: GrantFiled: December 10, 2015Date of Patent: January 1, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Shohei Katsuta, Yasushi Asaoka, Sho Ochi, Hideomi Yui, Tsuyoshi Maeda, Emi Yamamoto
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Patent number: 10126549Abstract: The present invention provides a method for designing a light diffusion pattern with which a light diffusion pattern to exhibit desired light diffusion properties can be designed depending on a few systematic procedures. The method includes a lens data preparation step of preparing lens data having desired light diffusion properties, a placement step of placing a plurality of lens data (100) prepared in the lens data preparation step in a predetermined region (200), a cutting step of, when an overlap (210) of lenses (100) occurs in the placement step, cutting out a part (421) of a lens shape to eliminate the overlap (210), and a repositioning step of replicating a shape of the cutout part (421) and repositioning it to another place.Type: GrantFiled: April 9, 2015Date of Patent: November 13, 2018Assignee: KURARAY Co., Ltd.Inventors: Atsushi Uchida, Masashi Hirai, Masaru Karai
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Patent number: 10094967Abstract: Disclosed are an optical sheet, a display device including the same, and a method for manufacturing the same. The optical sheet includes a host layer, a plurality of wavelength conversion particles in the host layer, and a plurality of optical path change particles in the host layer.Type: GrantFiled: October 5, 2015Date of Patent: October 9, 2018Assignee: LG INNOTEK CO., LTD.Inventor: Sahng Jin Lee
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Patent number: 10018327Abstract: The present invention may relate to an optical sheet unit. According to an embodiment of the present invention, disclosed is an optical sheet unit comprising: a diffusion sheet for diffusing incident light such that the light can be uniformly emitted; a prism sheet unit arranged at the position facing the diffusion sheet to concentrate the light incident from the diffusion sheet; and a bonding layer formed between the prism sheet unit and the diffusion sheet to bond the entire surfaces of the prism sheet unit and the diffusion sheet facing each other.Type: GrantFiled: May 8, 2013Date of Patent: July 10, 2018Assignee: LMS CO., LTDInventors: Sung Sik Cho, Oh Hyun Kwon, Tae Jun Lee, Woo Jong Lee, Hee Jeong Kim, Jee Hong Min, Young Il Kim
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Patent number: 9816687Abstract: The present techniques are related to an apparatus for an MEMS LED zoom. The apparatus for includes an LED light source and a collimation lens. The collimation lens to collimate light from the LED light source. The apparatus is also to include an active lens. The active lens to adjust the collimated light from the collimation lens.Type: GrantFiled: September 24, 2015Date of Patent: November 14, 2017Assignee: Intel CorporationInventor: Mikko Ollila
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Patent number: 9804311Abstract: A light control film, and light collimating assemblies and liquid crystal displays incorporating such light control films are described. The light control film includes alternating transmissive and absorptive regions, where the refractive index of each transmissive region is greater than the refractive index of each absorptive region. The absorptive regions form interfaces at angles that are close to the perpendicular to the light control film. A portion of the incident light intercepting the absorptive region undergoes Total Internal Reflection, and is transmitted through the film. The axial brightness of light passing through the film is increased, the brightness is more uniform within the viewing angle, and the viewing cutoff angle is sharpened.Type: GrantFiled: April 6, 2016Date of Patent: October 31, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Gary E. Gaides, Kenneth A. Epstein
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Patent number: 9562993Abstract: There is provided a method of manufacturing a refractive index distribution structure having a plurality of microparticles, suppressing density unevenness between the plurality of microparticles, capable of obtaining uniform in-plane characteristics, and capable of maintaining stability and high reproducibility. The method of manufacturing a refractive index distribution structure includes manufacturing a plurality of core-shell microparticles including a shell and a core microparticle contained in the shell, the core microparticle being made of a material having a refractive index higher than the material forming the shell and having the same core diameter, and the shell having a different shell thickness; and forming a refractive index distribution structure by arranging the plurality of core-shell microparticles on a substrate.Type: GrantFiled: March 16, 2012Date of Patent: February 7, 2017Assignee: Canon Kabushiki KaishaInventor: Akinari Takagi
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Patent number: 9557600Abstract: A backlight unit includes excellent heat radiation characteristics. The backlight unit of an embodiment of the present invention includes a chassis and a light source attached to the chassis. As the light source, an LED is preferably used. The chassis includes an aluminum base or aluminum layer, and a porous alumina layer or pore-sealed porous alumina layer provided on the surface of the aluminum base or aluminum layer.Type: GrantFiled: March 31, 2011Date of Patent: January 31, 2017Assignee: SHARP KABUSHIKI KAISHAInventors: Takao Imaoku, Takatomo Yoshioka, Kohji Fujiwara
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Patent number: 9518708Abstract: A lighting apparatus includes a plurality of LEDs arranged in a row; an elongated wiring board on which the LEDs are mounted; and an optical lens covering all the LEDs and controlling distribution of light emitted from each LED. The light emitted from each LED has an optical axis orthogonal to the wiring board. The optical lens is a converging lens and includes a first light incident surface on which the light emitted from the LED is incident, a medium that guides the light incident from the light incident surface, a light emitting surface, and a diffusion section that contains diffusing particles for causing the light incident from the LED to diffuse. The concentration of the diffusing particles in the diffusion section is high in the vicinity of the optical axis of the light emitted from the LED and gradually decreases as a distance from the optical axis increases.Type: GrantFiled: April 11, 2014Date of Patent: December 13, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takashi Ohta, Atsushi Motoya
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Patent number: 9202855Abstract: A display panel is discussed. The display panel includes a substrate having a thin film transistor (TFT) area having a plurality of thin film transistors (TFTs), and a pixel area having a plurality of subpixels that correspond to the plurality of thin film transistors; a plurality of color filters respectively formed in each area of the plurality of subpixels, the plurality color filters comprising each of red color (R), green color (G), blue color (B) and white color; and a white photoresist formed in a subpixel area of the white color filter, and formed to cover the TFT area.Type: GrantFiled: December 24, 2014Date of Patent: December 1, 2015Assignee: LG DISPLAY CO., LTD.Inventors: EunMi Jo, JuneHo Park, InCheol Park
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Patent number: 9134473Abstract: A spread illuminating apparatus includes a plurality of LEDs, an FPC on which the plurality of LEDs are mounted, and a light guide plate. The FPC is fixed to an underside surface of the light guide plate using a double-sided tape, and the plurality of LEDs are disposed opposing an incident light surface of the light guide plate. The double-sided tape includes a white substrate that reflects light and a white adhesive layer that reflects light and is formed on a surface of the white substrate on a side opposing the light guide plate. The white adhesive layer is prepared by mixing a light reflecting substance into an adhesive. Thereby, the brightness and environmental resistance of the spread illuminating apparatus can be improved.Type: GrantFiled: July 9, 2014Date of Patent: September 15, 2015Assignee: MINEBEA CO., LTD.Inventor: Shinji Kawai
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Patent number: 8995060Abstract: A head-up display device includes an image module, a substrate, and an optical film. The image module has an emitting source, wherein the emitting source transmits at least one image. The substrate is disposed corresponding to the image module. The optical film is disposed on the substrate and includes at least one transmission layer, wherein each transmission layer has a plurality of transmitting column structures obliquely arranged side by side, and a longitudinal direction of the transmitting column structure has a tilt angle with respect to a normal of the substrate. The at least one image is transmitted to the optical film, and the obliquely disposed transmitting column structures cause the at least one image to scatter on the optical film.Type: GrantFiled: December 26, 2012Date of Patent: March 31, 2015Assignee: National Applied Research LaboratoriesInventors: Wen-Hao Cho, Bo-Huei Liao, Donyau Chiang, Cheng-Chung Lee
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Patent number: 8960919Abstract: An image projection device includes a number-of-times measurement section that measures the number of passage times that the scanned laser light has passed through the light radiation members, a time measurement section that is triggered to measure an elapsed time when the number-of-times measurement section measures the number of passage times, an arithmetic section that calculates an initial timing at which the laser light source section starts outputting the laser light based on the measurement results of the number-of-times measurement section and the time measurement section, and a signal generation section that generates the switch signal at the initial timing calculated by the arithmetic section.Type: GrantFiled: October 21, 2011Date of Patent: February 24, 2015Assignee: NEC CorporationInventor: So Nishimura
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Publication number: 20150015799Abstract: A projection screen includes a substrate and an optical microstructure. The substrate has a projection area for projecting an image onto the projection area. The projection area includes a plurality of arrayed optical regions. Each of the optical regions includes a first and second optical sub-region with optical characteristics of reflective scattering/transmissive scattering/specular reflection and simple transmission, wherein an area of the second optical sub-region is larger than that of the first optical sub-region. The optical microstructure is arranged on the substrate for guiding the light of the image to a specific direction. The above-mentioned projection screen with two or more optical characteristics, for example, can be at the same time as the front projection screen and the rear projection screen, or allows the user to watch background image behind the projection screen. A projection system including the above-mentioned projection screen is also disclosed.Type: ApplicationFiled: July 14, 2014Publication date: January 15, 2015Inventor: Cheng-Huan CHEN
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Publication number: 20150009569Abstract: A screen is provided with microcapsules and a base material. The microcapsules each contain encapsulated liquid inside a capsule membrane. The microcapsules are planarly arranged on the base material. The encapsulated liquid includes light diffusion particles for scattering light, and a dispersion medium for dispersing the light diffusion particles. In a cross sectional area of the microcapsule projected in the direction perpendicular to the surface of the base material on which the microcapsules are planarly arranged, the ratio of the area of the encapsulated region to the area of the microcapsule ranges from 0.9025 to 0.990.Type: ApplicationFiled: February 26, 2013Publication date: January 8, 2015Inventors: Satoru Okagaki, Jun Kondo, Kuniko Kojima, Yuzo Nakano, Akihisa Miyata
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Patent number: 8922888Abstract: A light diffusing optical construction is disclosed. The optical construction includes a symmetric optical diffuser that scatters light in a first direction with a first viewing angle AH and in a second direction orthogonal to the first direction with a second viewing angle AV, where AV is substantially equal to AH. The symmetric optical diffuser includes an optically transparent first layer and a plurality of randomly arranged optically transparent beads partially embedded in the first layer leaving portions of the beads exposed. The optical construction also includes a specular reflector that reflects light that is not scattered by the symmetric optical diffuser. The specular reflector has a first average reflectance Ro in the visible at zero incident angle and a second average reflectance R60 in the visible at 60 degree incident angle. Ro/R60 is at least about 1.5. The optical construction also includes a light absorbing layer that absorbs light that is not reflected by the specular reflector.Type: GrantFiled: November 19, 2010Date of Patent: December 30, 2014Assignee: 3M Innovative Properties CompanyInventors: Yufeng Liu, David T. Yust
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Patent number: 8917447Abstract: Microreplicated light redirecting films suitable for use in autostereoscopic displays and backlights are made to incorporate at least one nanovoided layer whose interface with another layer forms an embedded structured surface of the light redirecting film. The nanovoided layer includes a polymer binder and optional nanoparticles, and may have a refractive index less than 1.35 or 1.3. The light redirecting films may be adapted for attachment to one or more other components of an autostereoscopic display, such as a display panel and/or a light guide of a backlight.Type: GrantFiled: October 20, 2010Date of Patent: December 23, 2014Assignee: 3M Innovative Properties CompanyInventors: Martin B. Wolk, Michael J. Sykora, William Blake Kolb, Encai Hao, John C. Schultz, Robert L. Brott, William J. Bryan, Scott M. Tapio, Audrey A. Sherman
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Publication number: 20140247428Abstract: Projection 3D systems and polarization preserving 3D screens are described that substantially increase polarization contrast ratio and viewing angle.Type: ApplicationFiled: October 25, 2012Publication date: September 4, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Richard Y. Liu, Alan P. Miller
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Patent number: 8760760Abstract: A method for providing a projection screen for receiving stereoscopic images may include providing a substrate with a contoured, reflective surface, wherein light reflected from the substrate substantially may undergo no more than a single reflection and may also include coating a first layer on the substrate with a contoured, reflective surface. The first layer may substantially maintain the same optical properties as the substrate without the first layer. The first layer may be substantially conformal to the surface of the substrate and also may be a self assembled monolayer coating which may include at least a functional group that is hydrophobic.Type: GrantFiled: September 30, 2011Date of Patent: June 24, 2014Assignee: RealD Inc.Inventors: David A. Coleman, Gary D. Sharp
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Patent number: 8730580Abstract: A light diffusion cell for laser light where in a transparent cell in which a liquid can be sealed, a fine particle dispersion in which fine particles having an average particle size of 100 nm or more and 1.5 ?m or less are colloidally dispersed in a liquid medium transmitting light, a same light diffusion cell including a reflection mechanism recursively using reflection light of incident light, a laser light source device including the light diffusion cell and a semiconductor laser light source and an image display device including the light diffusion cell or the laser light source device, and the light diffusion cell significantly reduces or removes speckle noise of semiconductor laser light. In addition, the light diffusion cell has an easy constitution, occupies a smaller volume and can be easily incorporated in any type of image display device using laser light.Type: GrantFiled: October 20, 2009Date of Patent: May 20, 2014Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.Inventor: Hideyoshi Fujisawa
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Patent number: 8723768Abstract: The display device includes an anti-reflection film having a plurality of projections over a display screen surface and a protective layer filling a space between the projections. The number of times of incidence of external light entering the display device on the anti-reflection film is increased; therefore, the amount of external light transmitted through the anti-reflection film is increased. Thus, the amount of external light reflected to a viewer side is reduced, and the cause of a reduction in visibility such as reflection can be eliminated. Further, since the plurality of projections is covered with a protective layer, entry of dust can be prevented, and physical strength of the anti-reflection film can be increased.Type: GrantFiled: May 29, 2007Date of Patent: May 13, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yuji Egi, Takeshi Nishi, Kiyofumi Ogino, Shinya Sasagawa, Motomu Kurata, Hideomi Suzawa
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Patent number: 8711476Abstract: A screen includes a polarization layer having plural acicular particles provided with their major axes oriented nearly in the same direction on a substrate, and has polarization selectivity of reflecting light in one polarization direction and absorbing light in the other polarization direction of two polarization directions orthogonal to each other on a plane perpendicular to incident light.Type: GrantFiled: June 29, 2012Date of Patent: April 29, 2014Assignee: Seiko Epson CorporationInventor: Noriko Kenmochi
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Patent number: 8687272Abstract: A projection screen that reduces speckle by separating reflective flakes by at least 100 micrometers. The reflective flakes are held in a binder material that is coated on a backing layer. In a laser projection system, the separation distance between reflective flakes may be at least twice the coherence length of the laser light.Type: GrantFiled: April 19, 2013Date of Patent: April 1, 2014Assignee: Laser Light Engines, Inc.Inventors: Barret Lippey, Ian Turner
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Patent number: 8659828Abstract: Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises embossing at least a first side of a first substrate to produce an optically functional material and then cutting the optically functional material into pieces to produce a plurality of engineered particles. The plurality of engineered particles may then be deposited on a second substrate to produce a substantially homogeneous optical appearance of the projection screen.Type: GrantFiled: June 4, 2012Date of Patent: February 25, 2014Assignee: RealD Inc.Inventors: Gary D. Sharp, David A. Coleman, Joel Petersen, Chris Rich, Ray Lewandowski
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Patent number: 8659829Abstract: Optical films are described comprising a color shifting film comprising a matte surface layer; and light control microstructured layer disposed proximate the color shifting film. The optical film may comprise a matte layer disposed on a major surface of the color shifting film and the light control micro structured layer disposed on the color shifting film at an interface that is free of adhesive. Alternatively, the optical film may comprise a film stack comprising a light control film having a light control microstructured layer, a color shifting film, and an adhesive layer between the light control film and color shifting film. In some embodiments, the matte layer comprises matte particles. In other embodiments, the matte layer comprises a plurality of microstructures and no greater than 50% of the microstructures comprise embedded matte particles. In some embodiments, the microstructures are substantially free of embedded matte particles.Type: GrantFiled: August 1, 2011Date of Patent: February 25, 2014Assignee: 3M Innovative Properties CompanyInventors: Christopher B. Walker, Jr., Michael E. Lauters, Joan M. Noyola
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Publication number: 20130301122Abstract: Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises stripping an optically functional material from a carrier substrate, thus creating engineered particles from the optically functional material. The engineered particles may then be deposited on a second substrate to create a substantially homogeneous optical appearance of the projection screen.Type: ApplicationFiled: July 15, 2013Publication date: November 14, 2013Inventors: Joel Petersen, Christopher Rich, Raymond Jacob Lewandowski, Gary D. Sharp, David Coleman
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Patent number: 8567958Abstract: An apparatus, system, and method are disclosed for managing projection areas on a surface. A search module is configured to search for one or more markers defining one or more projection areas on a surface. An area module is configured to select a usable projection area from the one or more projection areas on the surface. A boundary module is configured to determine a boundary for the usable projection area. A constraint module is configured to constrain a projection from a projector onto the surface within the boundary of the usable projection area in response to the boundary module determining the boundary of the usable projection area.Type: GrantFiled: March 17, 2011Date of Patent: October 29, 2013Assignee: International Business Machines CorporationInventors: Gary D. Cudak, Christopher J. Hardee, Randall C. Humes, Heather C. Miller
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Patent number: 8570651Abstract: A screen having a front and rear surface arranged to be used with viewing both 2D and 3D images. The front and rear screen surfaces are formed differently from different materials, where the front surface is used as a 3D image screen and the rear surface is used as a screen having high resolution.Type: GrantFiled: June 4, 2012Date of Patent: October 29, 2013Inventor: Hae-Yong Choi
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Patent number: 8488240Abstract: Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises stripping an optically functional material from a carrier substrate, thus creating engineered particles from the optically functional material. The engineered particles may then be deposited on a second substrate to create a substantially homogeneous optical appearance of the projection screen.Type: GrantFiled: April 27, 2012Date of Patent: July 16, 2013Assignee: RealD Inc.Inventors: Joel Petersen, Christopher Rich, Raymond Jacob Lewandowski, Gary D. Sharp, David Coleman
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Patent number: 8368998Abstract: A method is provided for color tuning a plasmonic device with a color tunable electronic skin. A plasmonic electronic skin is used, including a first substrate, a plasmonic structure, an electrically conductive transparent first electrode layer, an electrically conductive transparent second electrode layer, and a polymer-networked liquid crystal (PNLC) layer interposed between the first and second transparent electrode layers. In response to receiving a color tuning voltage, a full visible spectrum incident light, and a PNLC switch voltage, the plasmonic structure generates a first primary color. A primary color exhibits a single wavelength peak with a spectral full width at half magnitudes (FWHMs) in the visible spectrum of light. In response to receiving the PNLC switch voltage between the first and second electrode layers, the PNLC layer passes incident light.Type: GrantFiled: July 14, 2010Date of Patent: February 5, 2013Assignee: Sharp Laboratories of America, Inc.Inventors: Liang Tang, Akinori Hashimura, Apostolos T. Voutsas
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Patent number: 8360582Abstract: A rear projection type image display apparatus. The apparatus includes a projector that projects an image having a relatively high luminance, and a transmission type screen installed at an image formation plane of a projection light from the projector. The apparatus also includes a first polarizing plate having a first polarization direction disposed in front of an exit pupil of the projector, and a second polarizing plate having a second polarizing direction that is substantially orthogonal to the first polarizing direction disposed near a rear surface side opposite to an irradiation surface of the transmission type screen.Type: GrantFiled: October 17, 2006Date of Patent: January 29, 2013Assignee: Sony CorporationInventors: Tetsujiro Kondo, Tetsushi Kokubo, Hitoshi Mukai, Hirofumi Hibi, Kazumasa Tanaka, Kenji Tanaka, Hiroyuki Morisaki
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Publication number: 20130003175Abstract: A screen includes a polarization layer having plural acicular particles provided with their major axes oriented nearly in the same direction on a substrate, and has polarization selectivity of reflecting light in one polarization direction and absorbing light in the other polarization direction of two polarization directions orthogonal to each other on a plane perpendicular to incident light.Type: ApplicationFiled: June 29, 2012Publication date: January 3, 2013Applicant: SEIKO EPSON CORPORATIONInventors: Nobuhiko KENMOCHI, Noriko Kenmochi