The Modulator Being An Array Of Deformable Mirrors, E.g., Digital Micromirror Device (dmd)(epo) Patents (Class 348/E5.142)
  • Patent number: 11940720
    Abstract: An optical system (300) includes an optical modulation element (103) to reflect an incident light (250) in a different direction, and an illumination optical system (301) through which light emitted from a light source (101) is emitted toward the optical modulation element (103). The illumination optical system (301) includes a lens array (14A, 14B), a lens (15) disposed in an order listed from an upstream side of an optical path, and a shielding part (50) disposed upstream from the lens (15) on the optical path. The shielding part (50) shields light incident on an effective diameter of the lens (15). In a direction perpendicular to an optical axis of the light emitted from the light source (101), the optical axis (101A) is shifted from a center position (15M) of the effective diameter of the lens (15) in an opposite direction with reference to the shielding part (50).
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: March 26, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventor: Kei Nojima
  • Patent number: 11885953
    Abstract: A method is used to generate a report presenting parameter values corresponding to a structured illumination microscopy (SIM) optical system. The parameter values are based at least in part on the performed modulation calculation corresponding to an image set captured with the SIM optical system. A minimum FWHM slice is identified, based at least in part on an average FWHM value across the images in the first image set. Parameter estimation is performed on the identified minimum FWHM slice. Best in-focus parameters are identified based at least in part on the performed estimation. A phase estimate is performed for each image in the set. A modulation calculation is performed based at least in part on the identified best in-focus parameters. The report is based at least in part on the performed modulation calculation.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: January 30, 2024
    Assignee: ILLUMINA, INC.
    Inventors: Austin Corbett, Bo Lu, Robert Langlois, Joseph Pinto, Yu Chen, Peter Newman, Hongji Ren
  • Patent number: 11880122
    Abstract: An optical system includes a light source configured to emit irradiation light, an optical modulation element having a plurality of reflection planes by which an incident light is reflected in a different direction, and an optical element having an interface through which the irradiation light emitted from the light source is emitted to the optical modulation element as the incident light and a first exit light reflected by the optical modulation element in a first direction is guided to a projection surface. Each one of the plurality of reflection planes is inclined with reference to a surface of the optical modulation element to reflect the incident light as the first exit light, and the surface of the optical modulation element is inclined with reference to the interface.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: January 23, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventor: Kei Nojima
  • Patent number: 11808937
    Abstract: A method of providing a spatial light modulator comprising: providing a substrate; providing a first phase change material cell on the substrate, the first phase change material cell comprising: a first electrical heater on the substrate; a first optical reflector layer on the electrical heater; and a first phase change material layer on the optical reflector layer; and providing at least a second phase change material cell on the substrate, the second phase change material cell comprising: a second electrical heater on the substrate; a second optical reflector layer on the second electrical heater; a second phase change material layer on the second optical reflector layer; and providing a light absorber layer between the first phase change material cell and the second phase change material cell.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: November 7, 2023
    Assignee: HRL LABORATORIES, LLC
    Inventors: Jeong-Sun Moon, Hwa Chang Seo, Kyung-Ah Son, Kangmu Lee
  • Patent number: 11768427
    Abstract: A projector includes first and second cooling targets and a cooling device. The cooling device includes a first compressor, a condenser, a first expander configured to decompress a part of the working fluid condensed by the condenser, a first evaporator configured to change the working fluid in a liquid phase flowing from the first expander into the working fluid in a gas phase by using heat from the first cooling target, a second expander configured to decompress the other part of the working fluid condensed by the condenser, a second evaporator configured to change the working fluid in a liquid phase flowing from the second expander into the working fluid in a gas phase by using heat from the second cooling target, and a second compressor configured to compress the working fluid in a gas phase flowing from the second evaporator.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: September 26, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kaname Nagatani, Osamu Katsuda
  • Patent number: 11720260
    Abstract: A memory access method and a memory access system are provided. The memory access method is applicable to the memory access system. The memory access system includes a programmable logic device (PLD), a processor, a volatile memory, and a non-volatile memory. The PLD is disposed among the processor, the volatile memory, and the non-volatile memory. The memory access method includes: storing, by the PLD, data stored in the non-volatile memory to the volatile memory when the memory access system is started; and accessing, by the processor, the data from the volatile memory through the PLD.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: August 8, 2023
    Assignee: Coretronic Corporation
    Inventor: Ching-Sheng Chuang
  • Patent number: 11703746
    Abstract: A projection optical apparatus includes a projection system projecting light and including a resin lens, a degradation suppressor configured to suppress degradation of the resin lens, and a projection controller configured to control the degradation suppressor.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: July 18, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kaho Watanabe
  • Patent number: 11698539
    Abstract: A display device includes a light source, a spatial light modulator (SLM), and an optical assembly that includes a first reflective surface and a second reflective surface that is opposite to the first reflective surface. The light source is configured to provide illumination light. The optical assembly is configured to receive the illumination light. At least a first portion of the illumination light received by the optical assembly is transmitted through the first reflective surface toward the second reflective surface, is reflected by the second reflective surface toward the first reflective surface, is reflected by the first reflective surface toward the second reflective surface, and is transmitted through the second reflective surface. The SLM is configured to receive and modulate the portion of the illumination light transmitted through the optical assembly, and to output the modulated light. A method performed by the display device is also disclosed.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: July 11, 2023
    Assignee: META PLATFORMS TECHNOLOGIES, LLC
    Inventors: Ying Geng, Jacques Gollier, Weichuan Gao, Babak Amirsolaimani
  • Patent number: 11667231
    Abstract: A vehicular vision system includes a camera disposed at a vehicle and having a field of view exterior of the vehicle, a light source disposed at the vehicle and operable to emit light, and a control. Light emitted by the light source, when operated, illuminates a field of illumination exterior of the vehicle, with the field of view of the camera encompassing at least a portion of the field of illumination. The control, responsive to data processing by a processor of the control of image data captured by the camera, determines a change in the field of illumination provided by the light source. Responsive to the determined change in the field of illumination, the control at least one selected from the group of (i) adjusts the light source to accommodate the determined change, (ii) adjusts the camera to accommodate the determined change and (iii) generates an alert.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: June 6, 2023
    Inventors: Martin Solar, Stefan Graf, Julian Baker, Matthäus Artmann
  • Patent number: 11656458
    Abstract: A projection display having an optical light guide for a see-though display system using holographic optical element or diffractive optical element as in-coupling optics and combined with Fresnel mirrors as out-coupling optics is disclosed. A display using this light guide enables a wide angle (e.g., over 90 degrees field of view), high resolution, and a large eye-box with a compact size.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: May 23, 2023
    Assignees: NTT DOCOMO, Inc.
    Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuoki Ichikawa, Mikio Iwamura
  • Patent number: 11650403
    Abstract: An example device may include a light source, an optical element, and, optionally, an encapsulant layer. A light beam generated by the light source may be received by the optical element and redirected towards an illumination target, such as an eye of a user. The optical element may include a material, for example, with a refractive index of at least approximately 2 at a wavelength of the light beam. The light source may be a semiconductor light source, such as a light-emitting diode or a laser. The optical element may be supported by an emissive surface of the light source. Refraction at an exit surface of the optical element, and/or within a metamaterial layer, may advantageously modify the beam properties, for example, in relation to illuminating a target. In some examples, the light source and optical element may be integrated into a monolithic light source module.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: May 16, 2023
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Robin Sharma, Andrew John Ouderkirk, Christopher Yuan Ting Liao, Qi Zhang, Tanya Malhotra, Karol Constantine Hatzilias, Maik Scheller, Sheng Ye, Gregory Olegovic Andreev, Guohua Wei
  • Patent number: 11648563
    Abstract: This disclosure describes a reaction vessel assembly that includes the following: a reaction vessel including a housing component; a reaction chamber defined by the housing component; and a light absorbing layer conforming to a portion of an interior-facing surface of the housing component that defines the reaction chamber, the light absorbing layer comprising a multiple discrete regions; and an energy source configured to direct light through at least a portion of the housing component at one or more of the discrete regions of the light absorbing layer.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: May 16, 2023
    Assignee: Kryptos Biotechnologies, Inc.
    Inventors: Austin So, Jun Ho Son
  • Patent number: 11609386
    Abstract: Various implementations of systems and methods for insertion loss estimation are disclosed. The system for insertion loss estimation includes a first filter, a focusing component, and a digital micromirror device (DMD). The first filter, the focusing component, and the DMD are in parallel with an optical fiber connector. Additionally, the system includes an optical concentrator and a photodetector device. A first face of the optical concentrator is facing towards the DMD, and a second face of the optical concentrator is facing the photodetector device. Both the photodetector device and the optical concentrator are in parallel.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 21, 2023
    Assignee: Panduit Corp.
    Inventors: Jose M. Castro, Yu Huang
  • Patent number: 11513281
    Abstract: A light source structure, a backlight module and a display are provided. The light source structure includes a substrate and plural light source groups. The light source groups are arranged on the substrate, in which each of the light source groups includes plural light-emitting units, and there is a first distance between any two adjacent light-emitting units in each of the light source groups, and there is a second distance between two closest light-emitting units that are respectively in any two adjacent light source groups. The second distance is smaller than the first distance.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: November 29, 2022
    Assignees: Radiant Opto-Electronics (Suzhou) Co., Ltd., Radiant Opto-Electronics Corporation
    Inventors: Jui-Lin Chen, Pin-Hsun Lee, Yen-Ping Cheng, Yuan-Jhang Chen, Ruei-Lin Huang
  • Patent number: 11513433
    Abstract: A lighting device of the present disclosure includes a light source device and a reflective component. The reflective component reflects an illumination light incident from the light source device off the reflecting surface of the reflective component at incident angle ?, and emits the illumination light reflected toward a display element at exit angle ?. The reflecting surface of the reflective component is rotated with respect to two axes orthogonal to each other. 20 degrees?|???|?60 degrees is satisfied. Where, each of the incident angle ? and the exit angle ? is angle of the illumination light to a horizontal direction of the display element when the illumination light is incident on a front surface of the display element.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: November 29, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Manabu Okuno, Yoshimasa Fushimi
  • Patent number: 11509856
    Abstract: There is provided an image processing apparatus. An obtaining unit obtains an image, and first NR information defining noise reduction processing using a first noise reduction processing method which an external apparatus can apply to the image. A generating unit generates, on the basis of the first NR information, second NR information defining noise reduction processing using a second noise reduction processing method which is different from the first noise reduction processing method. A noise reducing unit applies the noise reduction processing using the second noise reduction processing method to the image in accordance with the second NR information.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: November 22, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takayuki Sudo
  • Patent number: 11493881
    Abstract: A holographic projector having an optical path is described. The holographic projector comprises a first spatial light modulator arranged to display a first hologram, and a first light source. The first light source is arranged to illuminate the first spatial light modulator with light of a first wavelength such that a first holographic reconstruction corresponding to the first hologram is formed on a replay plane. The holographic projector further comprises a continuous block of transparent material. At least part of the optical path is formed through the continuous block of transparent material. The transparent material has a refractive index greater than air.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: November 8, 2022
    Assignee: Dualitas Ltd
    Inventors: Jamieson Christmas, Máté Karner
  • Patent number: 11485020
    Abstract: A robotic system having movable mechanism of a non-planar inner projection is provided. It comprises a non-planar projection surface, a servo motor, an inner projection element, and a support frame. The servo motor is connected to the non-planar projection surface, and the non-planar projection surface can be rotated synchronously by the servo motor drive. The inner projection element is disposed relative to the non-planar projection surface, the inner projection element generates a target image, and the target image is projected onto the non-planar projection surface to form a display area, and the display area has a fixed boundary. The servo motor and the inner projection element are disposed on the support frame, and when the non-planar projection surface is synchronously rotated by the servo motor, the inner projection element also rotates synchronously.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: November 1, 2022
    Assignee: NUWA ROBOTICS (HK) LIMITED
    Inventors: Ming-Sheng Chang, Chi-Hao Pai
  • Patent number: 11480858
    Abstract: A projector includes a first cooling target, a cooling device, and an exterior housing. The cooling device includes a first circulation device in which working fluid circulates, a second circulation device in which a liquid refrigerant circulates, and a heat exchanger in which both of the working fluid and the liquid refrigerant flow. The first circulation device includes a first compressor, a condenser, a first expander, and a first evaporator. The second circulation device includes a first heat receiver heat-transferably connected to the first cooling target. The heat exchanger includes a first channel in which the working fluid having flowed in the first expander flows, and a second channel in which the liquid refrigerant having flowed in the first heat receiver flows. The heat exchanger cools the liquid refrigerant flowing in the second channel with the working fluid flowing in the first channel.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: October 25, 2022
    Assignee: Seiko Epson Corporation
    Inventor: Kaname Nagatani
  • Patent number: 11483500
    Abstract: A passive imaging sensor includes a plurality of optical elements in which at least one includes one or more Micro-Electro-Mechanical System (MEMS) Micro-Mirror Arrays (MMAs) having a plurality of independently and continuously controllable mirrors that at least tip and tilt in 2 DOF and may tip, tilt and piston in 3 DOF, In an operational mode, the mirrors are tipped and tilted, and possibly pistoned, such that the optical radiation is focused at the pixelated detector to read out an image of the scene. NUC coefficients such as offset and/or gain are applied to either the output signals of the detector or to the image to form the NUC'd images. In a calibration mode, the mirrors are tipped and tilted and/or pistoned to spatially or temporally blur the image or to re-direct the FOV to one or more on-board calibration sources to generate a uniform image from which to calculate and update the NUC coefficients.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: October 25, 2022
    Assignee: Raytheon Company
    Inventors: Paul R. Spyak, Gerald P. Uyeno, Benn H. Gleason, Sean D. Keller
  • Patent number: 11477422
    Abstract: An image processing device includes: an image acquisition unit that acquires first and second image data for projecting the image from the first and second projection units respectively; a superimposed region information acquisition unit that acquires information on a superimposed region between the projection range of the first projection unit and the projection range of the second projection unit; a first image processing unit that performs first image processing on a first portion in the first image data corresponding to the superimposed region; a second image processing unit that performs second image processing on a second portion in the second image data corresponding to the superimposed region; and an output unit that outputs the first image data after the first image processing as image data for the first projection unit and outputs the second image data after the second image processing as image data for the second projection unit.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: October 18, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Tomonori Masuda, Akihiro Ishizuka, Kazuki Inoue, Kazuki Ishida
  • Patent number: 11438560
    Abstract: An image processing device includes: an image acquisition unit that acquires first and second image data for projecting the image from the first and second projection units respectively; a superimposed region information acquisition unit that acquires information on a superimposed region between the projection range of the first projection unit and the projection range of the second projection unit; a first image processing unit that performs first image processing on a first portion in the first image data corresponding to the superimposed region; a second image processing unit that performs second image processing on a second portion in the second image data corresponding to the superimposed region; and an output unit that outputs the first image data after the first image processing as image data for the first projection unit and outputs the second image data after the second image processing as image data for the second projection unit.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: September 6, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Tomonori Masuda, Akihiro Ishizuka, Kazuki Inoue, Kazuki Ishida
  • Patent number: 11346518
    Abstract: A headlight (1) includes a lamp unit (20) including: light sources (52R,52G,52B) that emit laser light; and phase modulation elements (54R,54G,54B) that diffract the laser light emitted from the light sources (52R,52G,52B) with a phase modulation pattern that is changeable, and emit light of a light distribution pattern based on the phase modulation pattern. The lamp unit (20) adjusts a total luminous flux amount of light emitted from the lamp unit (20) according to the light distribution pattern.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: May 31, 2022
    Assignee: KOITO MANUFACIURING CO., LTD.
    Inventors: Masanori Kito, Kazuya Motohashi
  • Patent number: 11320728
    Abstract: In described examples, a projector includes a light source to produce first light of a first color. The projector also includes a phosphor to selectively receive the first light and produce second light of a second color in response to the first light. The projector also includes a dichroic mirror to pass a portion of the second light to produce a third light of a third color. The dichroic mirror reflects a portion of the second light as fourth light of a fourth color.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: May 3, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Gregory S. Pettitt, Michael Terry Davis, James Francis Hallas, John Marshall Ferri
  • Patent number: 10723618
    Abstract: An example microelectromechanical system (MEMS) switch comprises a hinge plane having two or more intersecting hinges; a switch plate; and a plurality of electrostatic pads. Selective activation of the electrostatic pads causes torsion of at least one of the two or more intersecting hinges to tilt the switch plate to a selected one of three or more positions.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: July 28, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Richard B. Irwin, Jr.
  • Patent number: 10405413
    Abstract: The present invention is directed to a user-operated spotlight system and method for lighting a performer on a stage; the user-operated spotlight system comprising a screen which displays an image of the stage and a cursor, a screen cursor positioner adapted to be operated to move the cursor on the screen, a processor connected to the screen, and, a plurality of controllable spotlights which are connected to the processor and which plurality of controllable spotlights can be moved by a user moving the cursor on the screen. The advantage of providing such a user-operated spotlight system is that a single user can operate a plurality of spotlights.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: September 3, 2019
    Inventor: Liam Feeney
  • Patent number: 10284832
    Abstract: There is provided an image processing apparatus, an image processing method, and a program which can cause an image adapted to an object located between an operation unit and a drawing destination (30) to be drawn on the drawing destination, the image processing apparatus including: an image generating unit configured to generate a drawn image to be drawn on a drawing destination on a basis of a position of an operation unit. The image generating unit generates the drawn image on a basis of detected information of a stencil target (40) located between the operation unit and the drawing destination.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: May 7, 2019
    Assignee: SONY CORPORATION
    Inventors: Satoshi Asai, Hiroshi Nakayama, Hiromi Iizuka, Takumi Suzuki, Tomoya Narita
  • Patent number: 10261286
    Abstract: A DMD chip includes a micromirror array mounted on a very thin silicon wafer attached to a cooling system integrated within the DMD chip. The cooling system includes a fluid cooled heat sink with a cooling channel. Fluid coolant may be pumped through the channel and out of the DMD to remove heat from the silicon substrate and the micromirror array. The micromirror array may be hermetically sealed within the housing, with the heat sink located between the micromirror array and a back wall of the housing, with both the heat sink and the array within the interior of the housing.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: April 16, 2019
    Assignee: Xerox Corporation
    Inventors: Francisco Zirilli, Michael B. Monahan, Jeffrey J. Bradway
  • Patent number: 10151905
    Abstract: An image capture system including two imaging systems of the same structure each having a wide-angle lens, which includes a front group, a reflection surface, and a rear group arranged in order from an object side, has a field angle larger than 180 degrees, and bends an optical axis of the front group toward the rear group by the reflection surface, and an imaging sensor, obtains an image in a solid angle of 4? radian by combining images imaged by the imaging systems. Each of the two wide-angle lenses includes the reflection surface between the front group and the rear group, the reflection surfaces are made to be common to the two imaging systems. This reduces an interval between lenses nearest to the object side in the front groups of the two wide-angle lenses, thereby reducing a distance between maximum field angles of the two wide-angle lenses.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: December 11, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroyuki Satoh, Noriyuki Terao, Yoshiaki Irino, Tomonori Tanaka, Nozomi Imae, Toru Harada, Hirokazu Takenaka, Hideaki Yamamoto, Kensuke Masuda, Satoshi Sawaguchi, Daisuke Bessho, Makoto Shohara, Yoichi Ito, Shusaku Takasu
  • Patent number: 10120109
    Abstract: A light emitting device includes a casing, a light blocking member, and a light emitting unit. The light blocking member is disposed within the casing, and is adapted to block an ambient light incident into the casing. The light emitting unit is disposed within the casing.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: November 6, 2018
    Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology Corporation
    Inventors: Ching-Tsung Ni, Tai-Jung Sung, Kuo-Hui Chang
  • Patent number: 9645478
    Abstract: A cooling device includes a heat dissipating unit that is in contact with an object to be cooled and dissipates heat, and an air blowing unit that takes therein air and blows the air to the heat dissipating unit. The heat dissipating unit includes a first stage portion and a second stage portion that have a difference in level therebetween. The air blowing unit includes a first inlet port that takes therein air from outside, and an outlet port that exhausts the taken-in air. The first inlet port faces the first stage portion, and the outlet port faces the second stage portion.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: May 9, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akihisa Mikawa, Tetsuya Fujioka, Hideo Kanai, Masamichi Yamada, Yasunari Mikutsu, Satoshi Tsuchiya, Naoyuki Ishikawa
  • Patent number: 9373178
    Abstract: Several embodiments of display systems that have wide color gamut performance are disclosed herein. In one embodiment, a display system comprises a plurality of emitters, said emitters emanating light into an optical path; a first modulator, said first modulator comprising a plurality of colored subpixels and wherein said first modulator transmitting light emanating from said emitters in said optical path; and a color notch filter, said color notch filter placed in said optical path for conditioning or convolving light together with said first modulator.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: June 21, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: John Gilbert
  • Patent number: 8138588
    Abstract: A package frame for use in packaging microelectromechanical devices and/or spatial light modulators comprises a frame, a stiffener, and a heat dissipater.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: March 20, 2012
    Assignee: Texas Instruments Incorporated
    Inventor: Bradley Morgan Haskett
  • Patent number: 7408707
    Abstract: A multi-region light scattering element with the optical characteristics of low speckle, high resolution high contrast, and high gain when used as an imaging element without any resulting loss of transmission or brightness with viewing angle. The multi-region light scattering element contains at least one region asymmetrically shaped light scattering features that are separated from a second light scattering region by a non-scattering region. In one embodiment, one or more of the regions contains particles that are asymmetrically shaped that improve the optical performance. In one embodiment, asymmetric particles are located in two regions separated by a non-scattering region with the particles within each region substantially aligned along an axis and the two axes are substantially perpendicular to each other. Methods for production of the screen element are also described.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: August 5, 2008
    Assignee: Fusion Optix Inc.
    Inventors: Terence E. Yeo, Zane A. Coleman