Diffusing Patents (Class 359/707)
  • Patent number: 10295892
    Abstract: A light source device includes: a light source section; a diffusing device on which a portion of light emitted from the light source section is incident, the diffusing device diffusely emitting the portion of the light; a wavelength conversion device on which another portion of the light emitted from the light source section is incident, the wavelength conversion device diffusely emitting converted light at a wavelength different from that of the another portion of the light; a light combining device combining the portion of the light diffused by the diffusing device with the converted light emitted from the wavelength conversion device; and an auxiliary diffusing element located between the light source section and the diffusing device on an optical path of the portion of the light, the auxiliary diffusing element diffusing the portion of the light and causing the portion of the light to be incident on the diffusing device.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: May 21, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Yuta Ito
  • Patent number: 10209527
    Abstract: An illuminator includes a light source apparatus that outputs light, a light collecting system on which the light is incident, and a diffuser element on which the collected light flux having exited out of the light collecting system is incident. The light includes a first light beam flux that occupies an area including the optical axis of the light collecting system and a second light beam flux that occupies the area outside the first light beam flux. The position where the first light beam flux is focused in the direction of the optical axis by the light collecting system differs from the position where the second light beam flux is focused in the direction of the optical axis by the light collecting system.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: February 19, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 10211024
    Abstract: Methods and systems for axial-scanning a sample. The method may include generating a scanning beam along a transverse scanning direction across the sample; acquiring radial positions of the generated scanning beam along the transverse scanning direction; and determining, based on the radial positions of the generated scanning beam and desired focal lengths, a phase mask so that the scanning beam at different radial positions along the scanning direction is focused to different axial positions of the sample along an optical axis transverse to the scanning direction.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: February 19, 2019
    Assignee: The Chinese University of Hong Kong
    Inventors: Shih-Chi Chen, Yina Chang, Chenyang Wen, Chenglin Gu
  • Patent number: 10097752
    Abstract: There are provided a lens barrel, an imaging device body, and an imaging device that can reduce a deviation in a blurred image of oblique luminous flux caused by an APD filter. A lens barrel includes a first lens optical system and a second lens optical system serving as lens optical systems including focus lenses, a diaphragm that changes the amount of an incident ray and emits the incident ray, a first APD filter that is disposed on a light-incident side of the diaphragm, and a second APD filter that is disposed on a light-emitting side of the diaphragm. Since the amount of a reduced upper ray L1 of oblique luminous flux and the amount of a reduced lower ray L2 thereof are made to be substantially equal to each other by the first APD filter and the second APD filter, a deviation of a blurred image is reduced.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: October 9, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Yoshinori Furuta, Takashi Aoki
  • Patent number: 9703182
    Abstract: A projection apparatus has an optical device capable of diffusing coherent light beams, an irradiation unit to irradiate coherent light beams to the optical device so that the coherent light beams scan the optical device, a light modulator to generate a modulated image using coherent light beams incident on and diffused at respective points of the optical device from the irradiation unit, and a projection optical system to project a modulated image generated by the light modulator onto a scattering plane. The light modulator has a plurality of micromirrors provided for each pixel, to switch a reflection angle of each coherent light beam from the optical device, and a reflection angle controller to control a timing of switching a reflection angle of each of the plurality of micromirrors so that the timing becomes irregular for each frame period that is a time unit for generating the modulated image.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: July 11, 2017
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Makio Kurashige
  • Patent number: 9696465
    Abstract: A light diffusion reflecting plate having a high degree of whiteness and excellent light diffusion properties and antiglare properties includes a substrate having thereon at least a ground coat layer and a top coat layer in contact with this ground coat layer. The ground coat layer is a white coating film layer. The top coat layer contains a white pigment from 2 to 15% by mass and two kinds of spherical particles, i.e., (A) a spherical particle having an average particle size of from 5 to 30 ?m and (B) a spherical particle having an average particle size of from 15 to 45 ?m, each of which is contained in an amount of from 5 to 17% by mass. A difference in the average particle size between the spherical particle (A) and the spherical particle (B) is 10 ?m or more.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: July 4, 2017
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Katsuhiro Miyake, Takuya Echigo, Toshihiro Kano
  • Patent number: 9664990
    Abstract: An illumination apparatus is provided, including a light source unit which includes at least one laser diode emitting light of a single color; a diffuser plate which disperses the light emitted from the light source unit; a fly-eye lens array which transmits light dispersed by the diffuser plate; and a fluorescent unit on which light transmitted by the fly-eye lens array is incident and which emits white light.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: May 30, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-tae Kim, Yong-Dok Cha
  • Patent number: 9651795
    Abstract: An image display device includes: a light source that emits a beam having a spreading angle in a first direction and a spreading angle in a second direction, which is smaller than the spreading angle in the first direction, in a direction perpendicular to the first direction; an afocal optical system member that has a focal point and changes the beam emitted by the light source into a parallel beam; an anisotropic diffusion plate that is arranged at the focal point and that widens at least the spreading angle in the second direction; a vibration unit that vibrates the anisotropic diffusion plate; a fly-eye lens array on which the parallel beam emitted from the afocal optical system member becomes incident; an image display element that modulates the beam that has passed through the fly-eye lens array into image display light.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: May 16, 2017
    Assignee: JVC KENWOOD Corporation
    Inventor: Tatsuru Kobayashi
  • Patent number: 9547151
    Abstract: An imaging lens system is provided. The imaging lens system includes a first lens that includes a convex object side surface and has a positive refractive power; a second lens that includes a concave image plane side surface and has a negative refractive power; a third lens that has a positive or negative refractive power; a fourth lens that includes a convex image plane side surface and has a positive or negative refractive power; a fifth lens that includes a convex image plane side surface and has a negative refractive power; and a sixth lens that has a negative refractive power, wherein the first through sixth lenses are arranged in order from an object side to an image plane side.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 17, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-youn Lee, Jung-pa Seo, Yong-wook Kim
  • Patent number: 9500780
    Abstract: Provided are an illumination device and a display apparatus capable of reducing generation of an interference pattern, while achieving downsizing and enhancing light use efficiency. An illumination device includes: a light source section that includes a laser light source; an optical device disposed on a light path through which laser light from the laser light source travels; an optical member that outputs illumination light; and a driving section that displaces a relative position between the optical device and the optical member to vary at least one of an incidence position and an incidence angle, in an incidence surface of the optical member, of the laser light.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: November 22, 2016
    Assignee: Sony Corporation
    Inventors: Tatsuya Oiwa, Kazuyuki Takahashi, Koji Miura
  • Patent number: 9447946
    Abstract: The present invention relates to an optical member, comprising: a light incidence surface; and a light-emitting surface which comprises a patterned portion intended for adjusting the intensity of light and formed at an area corresponding to a light source, and an adhesive portion disposed in an area other than the patterned portion. When the optical member of the present invention is applied to a backlight unit, the patterned portion, which diffuses the light from the light source, is formed in the area corresponding to the light source so as to effectively diffuse the light from the light source into the peripheral area.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 20, 2016
    Assignee: LG CHEM, LTD.
    Inventor: Joon-Hyung Kim
  • Patent number: 9423681
    Abstract: A beam, expansion unit is configured to expand a beam of laser light emitted from a laser light source into an ellipse. A beam irradiation position moving unit is configured to translate a mirror by a driving unit to sequentially move the laser light expanded into the ellipse on the surface of an integrator in a minor-axis direction of the ellipse. A reflective liquid crystal device is configured to modulate the laser light. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: August 23, 2016
    Assignee: JVC KENWOOD CORPORATION
    Inventors: Kazutaka Aboshi, Motoshi Tohda, Tatsuru Kobayashi
  • Patent number: 9116421
    Abstract: An optical system has projector optics aligned on a projection axis that is orthogonal to an offset axis. A first laser is positioned in a first plane orthogonal to the projection axis. First folding optics are positioned in the first plane to fold a first beam from the first laser to a first portion of the projector optics. A second laser is in a second plane parallel to, and offset along the offset axis from, the first plane. Second folding optics is positioned in the second plane to fold a second beam from the second laser to a second portion of the projector optics to synthesize the first and second beam.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: August 25, 2015
    Assignee: Greenlight Optics, LLC
    Inventor: Todd S. Rutherford
  • Publication number: 20150062698
    Abstract: A high power microscopy illumination system is disclosed, including a solid state illumination source. A diffusing collection lens having a diffusing surface is configured to collect and diffuse light emission from the solid state illumination source. An emitting surface is disposed substantially opposite the diffusing surface. An optical coupling element couples the light emission from the diffusing collection lens emitting surface along an optical axis to an optical output. The diffusing collection lens provides improved uniformity of illumination with direct coupling, without significant power loss.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 5, 2015
    Inventors: Yong Wang, Paul Constantinou
  • Patent number: 8957873
    Abstract: A display device (10) having a display element (20), such as a light-emitting device or a light-reflecting device, such as a MEMS device, and a glass touch panel (30) covering the display element, the outer surface (50) of the panel being textured. The panel is thin, having a thickness of 1.1 mm or less between the inner (40) and outer (50) surfaces.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: February 17, 2015
    Assignee: Corning Incorporated
    Inventors: Nicholas Francis Borrelli, Sasha Marjanovic, Timothy James Orsley
  • Patent number: 8953935
    Abstract: In an illumination arrangement (1) for an image field delimiting frame (2) of a mixed-image viewfinder camera having an observation beam path (9) and a viewfinder beam path (3), the illumination arrangement is arranged in the viewfinder beam path (3) in the direction of light upstream of the image field delimiting frame (2), the illumination is formed by an active light source (14, 14?) and the viewfinder beam path (3) is mechanically delimited (16, 22) within the illumination apparatus (1) with respect to the light source (14, 14?).
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: February 10, 2015
    Assignee: Leica Camera AG
    Inventor: Horst Stieger
  • Patent number: 8905548
    Abstract: An image projector includes a light source for displaying light and a diffusing screen coupled to an in-plane vibrator. The diffusing screen is positioned to receive the display light from the light source and generate phase-modulated display light. The image projector also includes a collimating element positioned to receive the phase-modulated display light. The image projector further includes a display panel positioned to receive the phase-modulated display light after being collimated by the collimating element. The display panel is configured to generate a projectable image using the phase-modulated display light.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: December 9, 2014
    Assignee: OmniVision Technologies, Inc.
    Inventor: Chun-Sheng Fan
  • Patent number: 8854734
    Abstract: An integrating optical system having a chamber, the chamber having an aperture and at least one portion having a diffuse reflective material; a light source; and a diffuse transmissive baffle. The baffle is located in relation to the chamber such that it is also located in an optical path between the light source and a treatable target. A light-ray originating from the light source is diffusely transmitted from the diffuse transmissive baffle and impinges on an interior surface of the chamber before impinging on the treatable target.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: October 7, 2014
    Assignee: Vela Technologies, Inc.
    Inventor: Michael W. Ingram
  • Patent number: 8848297
    Abstract: A lens includes a main body and a potting material. The main body includes a first major face, a second major face and at least one cavity arranged on the first major face. The potting material is arranged in the cavity and includes at least one diffuser which scatters radiation of at least one wavelength range.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: September 30, 2014
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Thomas Bemmerl, Ulrich Streppel, Bert Braune
  • Patent number: 8814392
    Abstract: A hybrid lens for a solid state light source device is provided. The hybrid lens includes a first component and a second component. The first component has a first side and a second side oppositely disposed thereto. The first side is positioned facing a solid state light source. The second component is attached to the first side of the first component. The first component includes a flame retardant material, such as a glass or a filled polymer. The second component includes a non-flame retardant material, such as an unfilled polymer.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: August 26, 2014
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Peter Lipowsky, Henrike Streppel
  • Patent number: 8810911
    Abstract: A highly color saturated light modulator includes a transparent substrate, printed image layer and a protection layer on the printed surface. The degree of color saturation of images on the modulator is greater than 40% and overall transmission between 15% and 95%. Lighting devices with the light modulator can be designed to meet desired light emitting intensity and direction by integrating micro-structures to the transparent substrate.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: August 19, 2014
    Inventor: Yu-Chen Hwang
  • Patent number: 8770763
    Abstract: A projection display device which displays an image by projecting the image on a screen includes a laser light source for emitting coherent light, a display device for forming an image to be displayed on a screen in an area illuminated by a luminous flux from the laser light source, a first diffusion plate for diffusing a luminous flux, and a second diffusion plate for diffusing a luminous flux. The first diffusion plate is provided in at least one of a conjugate position of the laser light source or the vicinity of the conjugate position in the optical path of the optical system including the laser light source through the screen. The second diffusion plate is provided in at least one of a conjugate position of the display device and the vicinity of the conjugate position.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: July 8, 2014
    Assignee: Olympus Corporation
    Inventors: Kazuaki Murayama, Kanto Miyazaki
  • Patent number: 8649111
    Abstract: The present invention provides an optical element, comprising: a side surface where incident light undergoes diffuse reflection inside the optical element, between the outline of a top optical surface and a bottom optical surface; and an inclined surface for total reflection of diffuse reflection from the side surface, formed at least between the side surface and the bottom optical surface.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: February 11, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuji Yano, Hideyuki Kurimoto, Shohgo Hirooka
  • Patent number: 8613533
    Abstract: A light emitting device package is disclosed. The light emitting device package includes a body having a cavity, a light source mounted in the cavity, and at least one optical sheet located on the body to cover the cavity. The optical sheet includes a first layer and a second layer formed on the first layer, wherein the second layer includes a plurality of linear prism parts. At least one of the first layer and the second layer contains a light diffusive member. The light emitting device package has enhanced light emission efficiency and light distribution uniformity.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: December 24, 2013
    Assignee: LG Innotek Co., Ltd.
    Inventor: BumChul Cho
  • Patent number: 8593741
    Abstract: An optical system includes a positive lens unit, wherein the positive lens unit includes an optical element containing a base material and minute particles that are mixed with the base material and have Abbe number that is lower than that of the base material, and the minute particles are higher in density at a peripheral portion of the optical element than on an optical axis of the optical element.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: November 26, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keiichiro Ishihara
  • Patent number: 8508850
    Abstract: Disclosed herein is a multi-layered light diffusion plate, in which the multi-layered light diffusion plate is manufactured by coextruding a transparent layer comprising an amorphous transparent thermoplastic resin and a light diffusion layer comprising an amorphous transparent thermoplastic resin and transparent particles, so that the manufacturing process thereof is simple and efficient, and which has excellent light transmissivity and light diffusivity, high brightness, and high brightness uniformity, thereby improving viewing angle characteristics, and to a liquid crystal display device comprising the same.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: August 13, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Hyun-Seok Yang, Bong-Keun Lee, Seo-Hwa Kim, Jae-Chan Park, Ju-Hwa Lee
  • Publication number: 20130147762
    Abstract: Disclosed herein is an optical navigation module, including: an LED that is a light source diffusing light; a lens having a light transmitting part and a light receiving part integrally formed and refracting and collecting light diffused from the light source; a window transmitting light diffused from the LED and light reflected by a subject; and a sensor receiving light reflected from the window, detecting the received light, and outputting the detected light as a signal.
    Type: Application
    Filed: March 1, 2012
    Publication date: June 13, 2013
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jin Mun Ryu, Ho Sik You
  • Patent number: 8403494
    Abstract: An image formed on a reflecting optical modulator is magnified by a projection optical system and projected on a backside of a transmission-type screen. The projection optical system is constituted so that a product of an F-number and a projection magnification of the projection optical system is less than 400.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: March 26, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kuniko Kojima, Hayato Takeuchi, Tomohiro Sasagawa, Yuzo Nakano
  • Patent number: 8379321
    Abstract: A method and apparatus involve using optics to direct radiation from a scene along an optical axis, the optics having a chromatic dispersion that is a function of a characteristic spectral signature for the scene so as to produce a chromatic blur that, for an extended depth-of-field region, is substantially spatially constant along the optical axis. A different method involves: identifying for a characteristic scene a spectral response curve; determining a plurality of different wavelength nodes dividing the area under the spectral response curve into a plurality of substantially equal segments; generating a mapping relationship that maps each of the wavelength nodes to a respective one of a plurality of focal points spaced substantially equally along the optical axis; and configuring the optical system as a function of the mapping relationship.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: February 19, 2013
    Assignee: Raytheon Canada Limited
    Inventors: Stanislaw Szapiel, Catherine A. Greenhalgh, Donald J. Denis
  • Patent number: 8369026
    Abstract: A manufacture method of a non-spherical lens module includes: firstly, forming a housing having a row of through holes running through a first surface and a second surface thereof; secondly, providing and filling liquid waveguide with the through holes and forming two convex portions at jointing positions of the through holes and said two surfaces respectively; lastly, cooling the liquid waveguide to form the waveguide in the through hole, cooling the two convex portions to form first and second lens portions.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 5, 2013
    Assignee: Hon Hai Precision Ind. Co., Ltd.
    Inventors: Wen-Yi Hsieh, Yen-Chih Chang
  • Patent number: 8351119
    Abstract: An optical film has multi-coated layers. Diffusion layers are used to scatter light. Each diffusion layer has an interface microstructure. A condensing optical layer is used to concentrating light. A design of a multi-coating technology is thus used for scattering and concentrating light. By integrating scattering and concentrating materials in a single optical film, cost is effectively reduced. By using diffusion layers having interface microstructures, interface-dominating mechanism, not only hybrid optical performance with luminance and haze is effectively enhanced; but also quality variations owing to particles added or film warp and scoring on the beneath optical film owing to particles coated are reduced.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: January 8, 2013
    Assignee: Gigastorage Corporation
    Inventors: Seng-Lu Yang, Hua-Chieh Chen, Po-Chao Huang, Chao-Li Su
  • Patent number: 8350948
    Abstract: An imaging device able to simplify an optical system while maintaining a high frame rate, but without needing expensive blurring restoration processing hardware, able to reduce costs, and in addition capable of obtaining a restored image little influenced by noise, and a method of same, which bypasses blurring restoration processing of an image processing device 150 by a switching unit 140 to perform camera signal processing of a camera signal processing unit 160 at the time of a through image and performs blurring restoration processing at the image processing device 150, then performs camera signal processing at the camera signal processing unit 160 to display the image only at the time of capturing an image.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: January 8, 2013
    Assignee: Kyocera Corporation
    Inventors: Yoichi Miyauchi, Shigeyasu Murase, Yusuke Hayashi
  • Publication number: 20120229916
    Abstract: The present invention provides an optical element, comprising: a side surface where incident light undergoes diffuse reflection inside the optical element, between the outline of a top optical surface and a bottom optical surface; and an inclined surface for total reflection of diffuse reflection from the side surface, formed at least between the side surface and the bottom optical surface.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 13, 2012
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Yuji Yano, Hideyuki Kurimoto, Shohgo Hirooka
  • Patent number: 8251549
    Abstract: An LED module includes an LED and a lens fixed with the LED for refracting light emitted by the LED. The lens has a center axis and a concaved inner face for incidence of the light and an opposite convex outer face for the light refracting out thereof. A peak intensity for light generated by the LED occurs within 52-67 degrees off the center axis when the light leaves the outer face.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: August 28, 2012
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventor: Hai-Wei Zhang
  • Patent number: 8253868
    Abstract: In one embodiment, a display device includes a movably suspended diffuser screen, and a voice-coil mechanism coupled to the diffuser screen. A signal-processing device, such as a microprocessor, is coupled to a driver circuit to produce a drive signal at an output terminal for the voice coil in response to a voltage sensed across the voice coil. The driver circuit includes shutdown control to drive its output terminal to a high-impedance state to accommodate sensing voltage across the voice coil. Thus, the signal for the voice coil is produced by the signal-processing device in a closed-loop feedback arrangement without the need for separate position-sensing elements. In a preferred arrangement, a second voice coil is coupled to the diffuser screen and to the signal-processing circuitry to produce a second signal for the second voice coil to accommodate generating a circular motion for the diffuser screen without stationary points.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: August 28, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: David Joseph Mehrl, Stephen Wesley Marshall
  • Patent number: 8231224
    Abstract: Briefly, in accordance with one or more embodiments, beam position diversity or beam offset diversity in pupil space performs the complement to angular diversity by maintaining angular content of a beam while changing its position and/or polarization properties in pupil space over time.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: July 31, 2012
    Assignee: Microvision, Inc.
    Inventors: Karlton D. Powell, Mark O. Freeman, Alban N. Lescure
  • Publication number: 20120162783
    Abstract: A lens includes a main body and a potting material. The main body includes a first major face, a second major face and at least one cavity arranged on the first major face. The potting material is arranged in the cavity and includes at least one diffuser which scatters radiation of at least one wavelength range.
    Type: Application
    Filed: March 5, 2010
    Publication date: June 28, 2012
    Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventors: Thomas Bemmerl, Ulrich Streppel, Bert Braune
  • Publication number: 20120140462
    Abstract: Optical elements having components made from high refractive index materials (RI?1.6) and lamp assemblies incorporating such elements. Various optical elements, such as total internal reflection lenses, can be fabricated from materials having a higher index of refraction than materials typically used in such elements. The compact optical elements have at least one internal reflection surface that directs radiant energy (e.g., light) from a receiving end to a transmitting end. By using a high refractive index material, a lens can be fabricated that directs a greater portion of the light emitted from a source into the lens toward the transmitting end of the lens. Thus, less of the light spills out of the lens at a surface where emission is not intended, reducing the number of lossy bounces needed to direct the light in a particular direction.
    Type: Application
    Filed: December 6, 2010
    Publication date: June 7, 2012
    Inventor: PAUL KENNETH PICKARD
  • Patent number: 8147068
    Abstract: A projection display apparatus includes a light source, a plurality of light modulating elements that respectively modulate different color components of light emitted from the light source, a plurality of light diffusing elements that are disposed on sides near the light source with reference to the respective light modulating elements, a light integrating element that integrates the different color components modulated by the light modulating elements, and a projection optical element that projects light resulting from the different color components integrated by the light integrating element.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: April 3, 2012
    Assignee: Sony Corporation
    Inventors: Hiroaki Suzuki, Norihiro Ohse
  • Patent number: 8047655
    Abstract: A projection display apparatus is provided that is capable of reducing speckle noise, with no image of a flaw or dust noticeable in or on a screen even if it exists in or on an optical component. The projection display apparatus includes a glass rod that makes uniform an optical beam emitted from a laser beam source; a lens that focuses an optical beam passing through the glass rod; a diffusion layer that provides an optical path difference distribution to the optical beam focused using the focusing element, the diffusion layer being optically conjugated with an incident end of the glass rod by the focusing element; a display device that spatially modulates the optical beam provided with the optical path difference distribution by the diffusion layer; and a magnification projection lens that projects on a screen an optical beam modulated by the modulator.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: November 1, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventor: Shinji Yagyu
  • Patent number: 8042950
    Abstract: A projection apparatus and image display apparatus. The apparatus includes a three-color light source that emits a plurality of color lights having different wavelengths, and a diffraction type optical element that performs diffusion forming of individual color lights. A field lens makes the diffusion-formed individual color lights into parallel lights, and a liquid crystal panel has a microlens array with a plurality of microlenses arranged in a matrix at the incident regions of the individual parallel color lights. A pixel section has three pixel openings arranged oppositely to the individual microlenses.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: October 25, 2011
    Assignee: Sony Corporation
    Inventors: Yoshikazu Hazama, Kikuo Kaise
  • Patent number: 8025410
    Abstract: A projection device includes a diffuser and a light source system. The light source system includes a light source, a dichroic element, an actuator, and a reflector. The light source generates a light beam that is directed to the dichroic element. The dichroic element forms first and second individual light beams from the light beam. The first individual light beam is transmitted to the diffuser. The second individual light beam is reflected from the reflector to the diffuser. The actuator is fixed to the reflector and has a removal frequency exceeding 20 Hz.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: September 27, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chiu-Ping Chen
  • Patent number: 7967452
    Abstract: A projection type display apparatus is provided that is safe even when a person looks directly into a laser beam. A laser operation control unit sets the output power of at least one laser source so that intensity A (mW/mm2) of the laser beam on at least one spatial light modulation element satisfies relationship of A<686√óB2 when numerical aperture B on image side of an illumination optics system is set.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: June 28, 2011
    Assignee: Panasonic Corporation
    Inventors: Tatsuo Itoh, Kazuhisa Yamamoto, Kenichi Kasazumi, Kiminori Mizuuchi
  • Patent number: 7954962
    Abstract: A laser image display including a laser light source emitting laser light, a beam deflector element for receiving laser light and deflecting its advancing direction, a beam deflecting element control section for controlling the degree of deflection performed by the beam deflector element, an optical integrator for receiving and guiding the deflected laser light to output from its outputting end face, a pseudo surface light source element for scattering the deflected laser light, and a modulation element for receiving and modulating the laser light scattered by the false surface light source element.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: June 7, 2011
    Assignee: Panasonic Corporation
    Inventors: Tetsuro Mizushima, Ken'ichi Kasazumi, Tatsuo Itoh, Tomoya Sugita, Kazuhisa Yamamoto, Shin-ichi Kadowaki
  • Patent number: 7922336
    Abstract: A light source device for a display device for projecting an image on a screen is provided, the light source device for display device including a light source unit operable to output light; an image outputting unit operable to output an image by giving an image signal to the light; and a control circuit operable to switch the image output from the image outputting unit between a normal image and a mirror reversed image formed by reversing the normal image right and left by controlling the image signal, such that outputting type is switched between a front projection in which the image is projected onto the screen from a front on the same side as the viewing side, and a rear projection in which the image is projected onto the screen from a rear plane on the opposite side to the viewing side.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: April 12, 2011
    Assignee: Panasonic Corporation
    Inventors: Toshifumi Yokoyama, Ken'ichi Kasazumi
  • Patent number: 7852570
    Abstract: A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with at least one machined tool tip and possibly other tool tips. The actuator provides for control of the movement of the tool tip in an x-direction into and out of the work piece in order to make continuous or discontinuous diffractive features in it. The machined work piece can be used to make articles having diffractive features such as optical films having lenslets.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 14, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Mark E. Gardiner, Jeffrey E. Clements, Mark R. Dupre
  • Publication number: 20100295973
    Abstract: An optical system (302) has a plurality of optical surfaces (304, 305, 306, 307, 308, 309) configured to provide blurred images of objects located within a selected range of object distances. At least two of the plurality of optical surfaces are configured to contribute to the blurring. An imaging system (300) includes a blurring optical system (302), a sensor (310) which receives light directed through the optical system, and an image processor (320) which selects one or more deblurring functions and applies the deblurring functions to provide a processed image. The processor may apply different deblurring functions to different sets of the raw data representing different portions of the field of view.
    Type: Application
    Filed: November 4, 2008
    Publication date: November 25, 2010
    Applicant: TESSERA NORTH AMERICA, INC.
    Inventors: Christopher Aubuchon, James Morris, Gregory Kintz, James Carriere, Michael R. Feldman
  • Patent number: 7837349
    Abstract: A lens has a main body for use with at least one light source. The main body has a light-emitting face, a light-collecting face disposed opposite the light-emitting face, and a plurality of focal points, the latter of which form a focal ring. A central axis extends through the light-collecting face and the light-emitting face. The main body is substantially radially symmetrical about the central axis and the focal ring extends around the central axis of the main body of the lens.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: November 23, 2010
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Jeyachandrabose Chinniah, Edwin Mitchell Sayers, Christopher L. Eichelberger
  • Patent number: 7813054
    Abstract: Optical elements for efficiently diffusing or shaping light have substrates with saddle shaped structures on their surfaces which provide substantially uniform light along a predefined angular range. Each saddle shaped structure defines an aperture of a lens, where the outer boundary of such aperture, when viewed normal to surface, may be of one of more different shapes, such as square or rectangular, circular, hexagonal, oval, or other geometric or arbitrary shape which may represent a full saddle shape or a subset region thereof. A plurality of saddle shaped structures may be arranged periodically or randomly along the surface. An optical element with a saddle shaped structure is referred to as a saddle lens, and optical elements with different shaped saddle shaped structures provide different types of saddle lenses.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: October 12, 2010
    Assignee: RPC Photonics, Inc.
    Inventor: Tasso R. M. Sales
  • Patent number: 7775668
    Abstract: A color-mixing laser module is disclosed, which is comprised of a laser unit capable of emitting red, blue and green laser beams; a beam combiner, for receiving and converging the laser beams emitted from the laser unit and then directing the converged laser light to illuminate on a light pattern adjusting unit; and the light pattern adjusting unit, capable of receiving the converged laser light from the beam combiner for adjusting the pattern of the same.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: August 17, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Po-Hung Yao, Cheng-Huan Chen, Ya-Yu Nieh