With Concave And Convex Reflectors In Series Patents (Class 359/731)
  • Patent number: 10416423
    Abstract: A catadioptric telescope is a modified version of a conventional Maksutov-Cassegrain optical telescope. In accordance with the invention, the reflecting surfaces of the primary mirror and the secondary spot mirror are on the second surfaces of the primary mirror and correcting lens, respectively. In further accordance with the invention, two of these telescopes can be joined together to form a binocular telescope array. The array can be easily customized to suit different remote sensing/satellite applications.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: September 17, 2019
    Assignee: University of Florida Research Foundation, Incorporated
    Inventors: Bo Zhao, Rafael Guzman
  • Patent number: 9798118
    Abstract: A projection display apparatus includes a light source module, an optical engine module and a projection lens module. The optical engine module includes a prism and a light valve. The projection lens module includes a first lens group and a second lens group. The first lens group is disposed between the screen end and the imaging end. The first lens group includes a first lens, a second lens and a third lens, which are sequentially disposed from the screen end to the imaging end and have negative, negative and positive refractive powers, respectively. The second lens group is disposed between the first lens group and the imaging end and has a positive refractive power. The second lens group includes a fourth lens, a fifth lens and a sixth lens, which are sequentially disposed from the screen end to the imaging end and have negative, positive and positive refractive powers, respectively.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: October 24, 2017
    Assignee: Coretronic Corporation
    Inventors: Tao-Hung Kuo, Yi-Chin Chen, Ching-Chuan Wei, Chuan-Te Cheng
  • Patent number: 9448338
    Abstract: In an embodiment, a method of aligning elements in a manufacturing process includes placing a middle element onto a base element, the base element forming first alignment features, the middle element forming apertures therethrough corresponding to the first alignment features. The method also includes placing second alignment features of an upper element onto the first alignment features such that the first and second alignment features cooperate, through the apertures, to align the upper element with the base element. An infrared lens assembly includes a lens formed of an infrared transmitting material that is disposed within a carrier of a base material, the lens being molded within the carrier with at least one feature that secures the lens to the carrier.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: September 20, 2016
    Assignee: FiveFocal LLC
    Inventors: Kenneth Scott Kubala, Alan E. Baron, Robert Matthew Bates
  • Patent number: 9448464
    Abstract: A projector includes an image beam generator and a projecting lens. The projecting lens includes a relay system and a projection system. The relay system has a focusing set and a converging set, and the projection system has a projection lens group and a reflector. The image beam generator generates an image beam, and emits it to the projecting lens, and the image beam emits through the focusing set, the converging set, and the projection lens group in sequence, and then is reflected by the reflector to enter the projection lens group again. After leaving the projection lens group the image beam emits through a lens of the converging set, and then is projected onto a screen.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: September 20, 2016
    Inventors: Yi-Jou Lin, Hsin-Ying Wu
  • Patent number: 9417443
    Abstract: A projector includes an image ray generator and a projecting lens, wherein the image ray generator generates image rays. The projecting lens includes a relay optical system for receiving the image rays and a projection optical system having at least one lens and a reflector. Whereby, the image rays pass through the relay optical system, pass through the at least one lens, and then are reflected by the reflector. After being reflected, the image rays pass through the at least one lens again, and then leave the projecting lens to be projected onto a screen. In addition, the invention further discloses the structure of the projecting lens and a method of projecting images.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: August 16, 2016
    Inventors: Yi-Jou Lin, Hsin-Ying Wu
  • Patent number: 9151932
    Abstract: A reflective type telephoto lens and a photographing apparatus including the reflective type telephoto lens are provided. The reflective type telephoto lens includes: a first lens that receives an incident flux of light from an object side; a main mirror including a reflective unit that reflects light transmitted through the first lens toward the object side, and a transmission portion disposed on a center portion thereof; a sub-mirror group including a sub-mirror that reflects light from the main mirror toward an image side; and a focusing lens group that focuses the light reflected by the sub-mirror.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: October 6, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jae-myung Ryu
  • Patent number: 9116038
    Abstract: An integrated illumination reference source for generating an illumination reference signal may include an optical element having a first outer surface and a second outer surface, such that the first and the second outer surface are substantially opposing. The optical element receives an incident optical signal at the first outer surface and projects the incident optical signal from the second outer surface onto a surface. A reflective device that is located on a region of the second outer surface is offset from an optical axis of the optical element. The reflective device includes a reflective surface that reflects a portion of the incident optical signal from the second outer surface back through the first outer surface, whereby the reflective surface of the reflective device is encapsulated between the first outer surface and the second outer surface of the optical element.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: August 25, 2015
    Assignee: International Business Machines Corporation
    Inventor: Carlos Strocchia-Rivera
  • Patent number: 8982481
    Abstract: A system and method is described for correcting aberrations caused by field curvature with a catadioptric objective. In one example, a catadioptric optical system includes a first catadioptric element and a second catadioptric element. The first catadioptric element includes a first surface positioned to reflect a beam and a second surface positioned to focus the beam reflected by the first surface. The second catadioptric element is configured to receive the beam reflected by the second surface of the first catadioptric element. The second catadioptric element includes a third surface positioned to reflect the beam, and a fourth reflective surface positioned to focus the beam reflected by the third reflective surface. A curvature of the third or fourth surfaces of the second catadioptric element is chosen to apply a positive contribution to a field curvature associated with the first catadioptric element.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: March 17, 2015
    Assignee: ASML Holding N.V.
    Inventors: Stanislav Y. Smirnov, Adel Joobeur, Yevgeniy Konstantinovich Shmarev, Arun Mahadevan Venkataraman
  • Patent number: 8965193
    Abstract: Systems and methods are provided for a solid filled mirrored lens system capable of wider fields of view and wider spectra than current lens systems. The mirrored lens is used to focus light incident upon a right circular cylindrical central body comprising a substantially planar first surface and a substantially planar second surface. A primary reflecting surface is located on the second surface of the central body and shaped as an annulus with a void in the central region of the second surface. Further, a secondary reflecting surface is located in a central region of the first surface facing the primary reflecting surface.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: February 24, 2015
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Christopher B. Svec, Alan R. Greenland, Hao C. Tran
  • Patent number: 8896938
    Abstract: A catadioptric lens system includes, in order of light travel: a first lens group that includes a concave mirror and a convex mirror and has a positive refractive power; a second lens group that is positioned on the image side of the concave mirror and has a negative refractive power; and a third lens group that has a positive refractive power, wherein the first lens group has a plurality of lenses on the image side of the concave mirror, and some lenses of the plurality of lenses are formed as a vibration-proof group so as to be movable in a direction perpendicular to an optical axis.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: November 25, 2014
    Assignee: Sony Corporation
    Inventor: Takeshi Hatakeyama
  • Patent number: 8767318
    Abstract: A catadioptric lens system includes, in order of light travel: a first lens group that includes a concave mirror and a convex mirror and has a positive refractive power; a second lens group that is positioned on the image side of the concave mirror and has a negative refractive power; and a third lens group that has a positive refractive power, wherein a close-range object is brought into focus by moving the second lens group in a direction parallel with the optical axis, and wherein the following conditional expression is satisfied 0<f/f12??(0) where f is a focal length of the whole system in a state where the focus is at infinity, and f12 is a composite focal length of the first lens group and the second lens group in a state where the focus is at infinity.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: July 1, 2014
    Assignee: Sony Corporation
    Inventor: Takeshi Hatakeyama
  • Patent number: 8724082
    Abstract: A semiconductor laser driver includes a light detection circuit to detect a quantity of light as a detected light emission intensity and output the detected light emission intensity to the control circuit, and a control circuit to control a light emission intensity for the semiconductor laser based on the detected light emission intensity and on a predetermined light emission intensity setting value. The light detection circuit includes a photoelectric conversion element to convert the quantity of light emitted from the semiconductor laser into an electrical current and output the converted electrical current, a current magnification setting circuit to amplify the electrical current output from the photoelectric conversion element to a predetermined amplified current at one of multiple different predetermined magnifications, a detection resistor to convert the amplified current output from the current magnification setting circuit into a voltage and output the voltage as the detected light emission intensity.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: May 13, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Hiroaki Kyogoku
  • Patent number: 8712246
    Abstract: An RF/Optical shared aperture is capable of transmitting and receiving optical signals and RF signals simultaneously. This technology enables compact wide bandwidth communications systems with 100% availability in clear air turbulence, rain and fog. The functions of an optical telescope and an RF reflector antenna are combined into a single compact package by installing an RF feed at either of the focal points of a modified Gregorian telescope.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 29, 2014
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Anthony J. Ruggiero, Hsueh-yuan Pao, Paul Sargis
  • Patent number: 8705184
    Abstract: An optical scanner, scanner apparatus, or scanner assembly, which may be particularly advantageous for use in a multiphoton microscope, includes a first drivable bending component, a second drivable bending component mounted perpendicularly to the first component, and at least one optical waveguide coupled one or both of the first and second bending components, wherein the at least one optical waveguide provides both a propagation path for a multiphoton excitation radiation delivery between a light source and a target and a multiphoton-induced emission radiation delivery between the target and a detector. A GRIN relay lens. A multiphoton microscope incorporating the scanner and the GRIN relay lens.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: April 22, 2014
    Assignee: Cornell University
    Inventors: Chunhui (Chris) Xu, Watt W. Webb, Douglas S. Scherr, Dimitre Gueorguiev Ouzounov, David R. Rivera, Christopher M. Brown, Demirhan Kobat, David Huland, Scott S. Howard
  • Publication number: 20140098277
    Abstract: A catadioptric lens system includes: a first lens group including a concave mirror and a convex mirror and having positive refractive power; a second lens group having positive refractive power; and a third lens group having negative refractive power, the first to third lens groups being provided, in order, on a light path of incident light and in a direction of travel of the incident light.
    Type: Application
    Filed: September 18, 2013
    Publication date: April 10, 2014
    Applicant: SONY CORPORATION
    Inventors: Kodai Nagamatsu, Takeshi Hatakeyama
  • Patent number: 8659823
    Abstract: Ring-field, catoptric and catadioptric, unit-magnification, projection optical systems having non-concentric optical surfaces are disclosed. Each system has a system axis with object and image planes on opposite sides of the system axis. The non-concentric surfaces allow for working distances of the object and image planes in excess of 100 millimeters to be achieved, with a ring-field width sufficient to allow a rectangular object-field having a long dimension in excess of 100 mm to be projected.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: February 25, 2014
    Assignee: Coherent, Inc.
    Inventor: Romeo I. Mercado
  • Publication number: 20130329283
    Abstract: A catadioptric optical system includes, in order from an object side to an image side and arranged along an optical axis, a first catadioptric unit, a second catadioptric unit disposed in axial alignment with the first catadioptric unit and with a space therebetween; and a lens group disposed in axial alignment with the first and second catadioptric optical units. Light rays arriving from an object plane undergo a first reflection at the image-side surface of the first catadioptric optical unit, a second reflection at the object-side surface of the first catadioptric optical unit, a third reflection at the image-side surface of the second catadioptric optical unit, and a fourth reflection at the object-side surface of the second catadioptric optical unit. Advantageously, the sum the outward Petzval curvatures is cancelled out by the sum of inward Petzval curvatures.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 12, 2013
    Applicants: The Arizona Board of Regents on behalf of the University of Arizona, CANON KABUSHIKI KAISHA
    Inventors: Masatsugu Nakano, Jose Manuel Sasian-Alvarado
  • Patent number: 8553337
    Abstract: Embodiments of the invention include an optical system and an optical system module, coupled to a distal end of a fluorescence emission endoscope apparatus, an optical waveguide-based fluorescence emission endoscopy system, and a method for remotely-controlled, multi-magnification imaging of a target or fluorescence emission collection from a target with a fluorescence emission endoscope apparatus. An exemplary system includes an objective lens disposed in a distal end of an endoscope apparatus. The lens is adapted to transmit both a visible target illumination and a fluorescence-emission-inducing target illumination as well as fluorescence-emission and visible light from the target. The system can thus simultaneously provide low magnification, large field of view imaging and high magnification, high-resolution multiphoton imaging with a single lens system.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: October 8, 2013
    Assignee: Cornell University
    Inventors: Watt W. Webb, Chris Xu
  • Patent number: 8531750
    Abstract: An afocal beam relay has first and second primary concave reflective surfaces and first and second secondary convex toroidal reflective surfaces. The centers of curvature of each of the first and second primary reflective surfaces and first and second secondary reflective surfaces lie on an axis. The first and second secondary convex reflective surfaces face toward the first and second primary concave reflective surfaces and are disposed to relay a decentered entrance pupil to a decentered exit pupil. An aspheric corrector element is disposed in the path of an input beam of light that is directed by the primary and secondary surfaces to the decentered entrance pupil. The directed beam of light between the first and second secondary convex mirrors is collimated in one direction and focused in mid air in an orthogonal direction.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: September 10, 2013
    Assignee: Kessler Optics & Photonics Solutions, Ltd.
    Inventor: David Kessler
  • Publication number: 20130057971
    Abstract: Provided is a panoramic imaging lens including a first lens piece and a second lens piece. The panoramic imaging lens realizes reduced complexity and cost of manufacturing, and stray rays causing flare or ghost phenomenon are suppressed by cutting a side of the second lens piece, thereby improving image quality.
    Type: Application
    Filed: August 30, 2012
    Publication date: March 7, 2013
    Inventors: Liefeng ZHAO, Mikhail Popov, Jung-Pa Seo
  • Publication number: 20130010180
    Abstract: A catadioptric lens system includes, in order of light travel: a first lens group that includes a concave mirror and a convex mirror and has a positive refractive power; a second lens group that is positioned on the image side of the concave mirror and has a negative refractive power; and a third lens group that has a positive refractive power, wherein the first lens group has a plurality of lenses on the image side of the concave mirror, and some lenses of the plurality of lenses are formed as a vibration-proof group so as to be movable in a direction perpendicular to an optical axis.
    Type: Application
    Filed: May 29, 2012
    Publication date: January 10, 2013
    Applicant: Sony Corporation
    Inventor: Takeshi Hatakeyama
  • Publication number: 20130010376
    Abstract: A catadioptric lens system includes, in order of light travel: a first lens group that includes a concave mirror and a convex mirror and has a positive refractive power; a second lens group that is positioned on the image side of the concave mirror and has a negative refractive power; and a third lens group that has a positive refractive power, wherein a close-range object is brought into focus by moving the second lens group in a direction parallel with the optical axis, and wherein the following conditional expression is satisfied 0<f/f12??(0) where f is a focal length of the whole system in a state where the focus is at infinity, and f12 is a composite focal length of the first lens group and the second lens group in a state where the focus is at infinity.
    Type: Application
    Filed: May 29, 2012
    Publication date: January 10, 2013
    Applicant: Sony Corporation
    Inventor: Takeshi Hatakeyama
  • Patent number: 8351133
    Abstract: A 360 degree viewing angle lens unit, from the object side to the image side thereof, includes a 360 degree viewing angle lens and a relay lens. The viewing angle lens includes an annular incident surface, a first reflective surface, a second reflective surface, and an emitting surface. The annular incident surface has a positive radius of curvature and symmetrically concentric around an optical axis of the lens unit. The first reflective surface has a positive radius of curvature and is symmetrically concentric around the optical axis. The second reflective surface has a negative radius of curvature, and is coaxial with the incident surface. The emitting surface has a positive radius of curvature and is coaxial with the first reflective surface. The relay lens has a positive refractive power and is aligned with the emitting surface. The relay lens is configured for condensing image light output from the emitting surface.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: January 8, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Fang-Ying Peng, Hai-Jo Huang, Sheng-An Wang, Xiao-Na Liu, Jing Gao
  • Publication number: 20120268836
    Abstract: Ring-field, catoptric and catadioptric, unit-magnification, projection optical systems having non-concentric optical surfaces are disclosed. Each system has a system axis with object and image planes on opposite sides of the system axis. The non-concentric surfaces allow for working distances of the object and image planes in excess of 100 millimeters to be achieved, with a ring-field width sufficient to allow a rectangular object-field having a long dimension in excess of 100 mm to be projected.
    Type: Application
    Filed: September 30, 2011
    Publication date: October 25, 2012
    Applicant: Coherent, Inc.
    Inventor: Romeo I. Mercado
  • Patent number: 8289630
    Abstract: An optical element that is made of a transparent medium L1 rotationally symmetric relative to the central axis 2 with a refractive index greater than 1, wherein the transparent medium L1 has a first transmissive surface 11, a first reflective surface 12, a second reflective surface 13 arranged at an opposite side to the image plane 5 relative to the first reflective surface 12 and a second transmissive surface 14 arranged at the image plane 5 side relative to the second reflective surface 13 and that the flux of light entering the transparent medium L1 goes into it by way of the first transmissive surface 11 so as to be reflected to the opposite side to the image plane 5 by the first reflective surface 12 and then to the image plane 5 side by the second reflective surface 13 to form an optical path before going out from the transparent medium L1 at the image plane 5 side by way of the second transmissive surface 14 in the order of forward ray tracing.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: October 16, 2012
    Assignee: Olympus Corporation
    Inventor: Takayoshi Togino
  • Patent number: 8274720
    Abstract: An afocal beam relay has a concave reflective surface having a first center of curvature and a first vertex that define an optical axis. A convex reflective surface has a second center of curvature that is substantially coincident with the first center of curvature and a second vertex that lies along the optical axis. The convex reflective surface faces toward the concave reflective surface to relay a decentered entrance pupil to a decentered exit pupil. An aspheric corrector element is disposed in the path of input light that is directed to the decentered entrance pupil and has correction values that are substantially centered on the first center of curvature.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: September 25, 2012
    Assignee: Kessler Optics and Photonics Solutions, Ltd.
    Inventor: David Kessler
  • Patent number: 8254038
    Abstract: An optical element is made of a transparent medium that is rotationally symmetric relative to the central axis with a refractive index greater than 1. The transparent medium has a first transmissive surface at the outermost periphery relative to the central axis, a first reflective surface at the side of the central axis relative to the first transmissive surface, a second reflective surface at the side opposite to the image plane relative to the first reflective surface and a second transmissive surface at the side of the image plane relative to the second reflective surface. The flux of light enters and proceeds through the transparent medium via the first transmissive surface, the first reflective surface, the second reflective surface and the second transmissive surface to form an optical path. The optical path is formed only at a side relative to the central axis.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: August 28, 2012
    Assignee: Olympus Corporation
    Inventor: Takayoshi Togino
  • Patent number: 8223443
    Abstract: An imaging system including a back-plane reflector having a concave aspherical reflecting surface and an outer diameter that is no greater than a first distance, with an aperture formed in the back-plane reflector, the aperture for admitting light from a field of view to the imaging system, a fore-plane reflector having a concave aspherical reflecting surface and an outer diameter that is no greater than the first distance, with an aperture formed in the fore-plane reflector, the aperture for discharging the light from the imaging system to an image plane, and a central reflector having a convex aspherical reflecting surface for receiving light from the fore-plane reflector and discharging the light from the imaging system through the aperture in the fore-plane reflector.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: July 17, 2012
    Assignee: KLA-Tencor Corporation
    Inventor: Azmi Kadkly
  • Patent number: 8217374
    Abstract: There is a need for providing a projection optical system that is appropriate for maintaining high resolution with low distortion, miniaturizing a reflector, decreasing the number of reflectors, and decreasing the depth and the bottom (or top) of a display used for a rear projection television, for example. The projection optical system according to the invention enlarges and projects images from a primary image surface existing at a reducing side to a secondary image surface existing at an enlarging side. The projection optical system has a first optical system L11 and a second optical system L12. The first optical system L11 forms an intermediate image (position II) of the primary image surface. The second optical system L12 has a concave reflector AM1 that forms the secondary image surface resulting from the intermediate image. A light beam travels from the center of the primary image surface and to the center of the secondary image surface and crosses an optical axis.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: July 10, 2012
    Assignee: Sony Corporation
    Inventors: Jun Nishikawa, Toshihiro Sunaga
  • Publication number: 20120111397
    Abstract: An apparatus is disclosed including: an entrance aperture for admitting light from a source; an optical collector configured to receive light admitted through the entrance aperture and concentrate the light onto a receiver element; and an optical homogenizer element configured and arranged to image the entrance aperture onto the receiver element.
    Type: Application
    Filed: July 28, 2011
    Publication date: May 10, 2012
    Inventors: Roland Winston, Weiya Zhang
  • Publication number: 20120105980
    Abstract: A 360 degree viewing angle lens unit, from the object side to the image side thereof, includes a 360 degree viewing angle lens and a relay lens. The viewing angle lens includes an annular incident surface, a first reflective surface, a second reflective surface, and an emitting surface. The annular incident surface has a positive radius of curvature and symmetrically concentric around an optical axis of the lens unit. The first reflective surface has a positive radius of curvature and is symmetrically concentric around the optical axis. The second reflective surface has a negative radius of curvature, and is coaxial with the incident surface. The emitting surface has a positive radius of curvature and is coaxial with the first reflective surface. The relay lens has a positive refractive power and is aligned with the emitting surface. The relay lens is configured for condensing image light output from the emitting surface.
    Type: Application
    Filed: December 30, 2010
    Publication date: May 3, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
    Inventors: FANG-YING PENG, HAI-JO HUANG, SHENG-AN WANG, XIAO-NA LIU, JING GAO
  • Patent number: 8169694
    Abstract: In general, in a first aspect, the invention features a system that includes a microlithography projection optical system. The microlithography projection optical system includes a plurality of elements arranged so that during operation the plurality of elements image radiation at a wavelength ? from an object plane to an image plane. At least one of the elements is a reflective element that has a rotationally-asymmetric surface positioned in a path of the radiation. The rotationally-asymmetric surface deviates from a rotationally-symmetric reference surface by a distance of about ? or more at one or more locations of the rotationally-asymmetric surface.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: May 1, 2012
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Hans-Juergen Mann, Wilhelm Ulrich, Marco Pretorius
  • Patent number: 8164838
    Abstract: A projection optical system includes: a refracting optical section composed mainly of a plurality of lenses disposed in order from a reducing side, and having positive power; a first reflecting optical section having a concave reflecting optical surface; and a second reflecting optical section having a convex reflecting optical surface, wherein the projection optical system satisfies the following conditional expression, denoting a focal length of a total system combining the refracting optical section, the first reflecting optical section, and the second reflecting optical section as F, and a focal length of the refracting optical section as FL: 0.2<F/FL<0.5??(1).
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: April 24, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Nobutaka Minefuji
  • Patent number: 8119905
    Abstract: The present invention is a combination non-imaging concentrator in which at least one surface or volume is incorporated as an optical element to increase obliquity of reflection at walls of a light guide. The combination non-imaging concentrator may be used in a solar energy system to receive solar radiation from optical components and then output the solar radiation to a photovoltaic cell for conversion to electricity. One or more lenses may be formed integrally with the light guide, or may be used in conjunction with the light guide as separate components.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: February 21, 2012
    Assignee: SolFocus, Inc.
    Inventors: John Steffen Jensen, Mark McDonald
  • Patent number: 8113667
    Abstract: A projection optical system satisfies a conditional formula: 0.01<{(tan ?f1?tan ?f2)?(tan ?n1?tan ?n2)}·(?2/?1)<0.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: February 14, 2012
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Keiko Yamada, Kohtaro Hayashi, Soh Ohzawa, Masayuki Imaoka
  • Patent number: 8072693
    Abstract: An optical system is adapted to form an image having a full 360° angle of view on an image plane. The optical system includes a front unit having at least two reflecting surfaces, each rotationally symmetric about a center axis, and a rear unit that is rotationally symmetric about the center axis and has positive power. The first reflecting surface is located opposite to an entrance pupil, and the second reflecting surface is located on the same side as the first reflecting surface. The entrance pupil in a section including the center axis is located between the outer periphery of the first reflecting surface and the outer periphery of the second reflecting surface. A light beam coming from afar passes through the front unit and the rear unit in order, forming an image at a position of an image plane off the center axis.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: December 6, 2011
    Assignee: Olympus Corporation
    Inventors: Takayoshi Togino, Shin Nakamura
  • Publication number: 20110199692
    Abstract: A projection optical system includes: a refracting optical section composed mainly of a plurality of lenses disposed in order from a reducing side, and having positive power; a first reflecting optical section having a concave reflecting optical surface; and a second reflecting optical section having a convex reflecting optical surface, wherein the projection optical system satisfies the following conditional expression, denoting a focal length of a total system combining the refracting optical section, the first reflecting optical section, and the second reflecting optical section as F, and a focal length of the refracting optical section as FL: 0.2<F/FL<0.5??(1).
    Type: Application
    Filed: April 27, 2011
    Publication date: August 18, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Nobutaka MINEFUJI
  • Patent number: 7957078
    Abstract: A projection optical system includes: a refracting optical section composed mainly of a plurality of lenses disposed in order from a reducing side, and having positive power; a first reflecting optical section having a concave reflecting optical surface; and a second reflecting optical section having a convex reflecting optical surface, wherein the projection optical system satisfies the following conditional expression, denoting a focal length of a total system combining the refracting optical section, the first reflecting optical section, and the second reflecting optical section as F, and a focal length of the refracting optical section as FL: 0.2<F/FL<0.5??(1).
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: June 7, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Nobutaka Minefuji
  • Patent number: 7922341
    Abstract: In a projection optical system for use in an image projection apparatus illuminating an image display panel forming an image in accordance with a modulating signal with illumination light from a light source, the projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the image display panel. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the image display panel is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: April 12, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Takaura, Kazuhiro Fujita, Nobuo Sakuma
  • Patent number: 7898749
    Abstract: A variety of lenses, lens assemblies, imaging devices, applications for such lenses, assemblies and devices, and related methods of operation and manufacturing are disclosed. At least some embodiments of the invention relate to a lens that includes first and second inward-facing surfaces that are each at least partly reflective. The lens further includes a first aperture that is positioned around at least a portion of an outer periphery of one of the first and second inward-facing surfaces, and a second aperture existing proximate a central region of the lens. The light proceeding within the lens between the first and second inward-facing surfaces is reflected at least twice on at least one of the first and second inward-facing surfaces as it travels between the first aperture and the second aperture.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: March 1, 2011
    Assignee: The Regents of the University of California
    Inventors: Joseph Ford, Eric Tremblay, Shaya Fainman
  • Publication number: 20100208364
    Abstract: A projection optical system includes: a refracting optical section composed mainly of a plurality of lenses disposed in order from a reducing side, and having positive power; a first reflecting optical section having a concave reflecting optical surface; and a second reflecting optical section having a convex reflecting optical surface, wherein the projection optical system satisfies the following conditional expression, denoting a focal length of a total system combining the refracting optical section, the first reflecting optical section, and the second reflecting optical section as F, and a focal length of the refracting optical section as FL: 0.2<F/FL<0.5??(1).
    Type: Application
    Filed: February 3, 2010
    Publication date: August 19, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Nobutaka MINEFUJI
  • Patent number: 7719772
    Abstract: In general, in a first aspect, the invention features a system that includes a microlithography projection optical system. The microlithography projection optical system includes a plurality of elements arranged so that during operation the plurality of elements image radiation at a wavelength ? from an object plane to an image plane. At least one of the elements is a reflective element that has a rotationally-asymmetric surface positioned in a path of the radiation. The rotationally-asymmetric surface deviates from a rotationally-symmetric reference surface by a distance of about ? or more at one or more locations of the rotationally-asymmetric surface.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: May 18, 2010
    Assignee: Carl Zeiss SMT AG
    Inventors: Han-Juergen Mann, Wilhelm Ulrich, Marco Pretorius
  • Patent number: 7701647
    Abstract: A compact, optically fast catadioptric imager. In one embodiment, the catadioptric imager of this invention includes a first group of optical elements optically disposed to receive electromagnetic radiation from an object and having positive optical power, a second group of optical elements, optically disposed between the first group of optical elements and an image plane, having at least one optical surface and having positive optical power, a third group of optical elements, optically disposed between the object and the second group of optical elements, having at least one optical surface and having negative optical power, a fourth group of optical elements substantially centered along an optical axis of said second group of optical elements and having negative optical power, and a fifth group of optical elements having positive optical power.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: April 20, 2010
    Assignee: Wavefront Research, Inc.
    Inventor: Thomas A. Mitchell
  • Publication number: 20090059358
    Abstract: A catadioptric objective includes a plurality of optical elements arranged along an optical axis to image a pattern from an object field in an object surface of the objective to an image field in an image surface region of the objective at an image-side numerical aperture NA with electromagnetic radiation from a wavelength band around a central wavelength ?. The optical elements include a concave mirror and a plurality of lenses. The projection objective forms an image of the pattern in a respective Petzval surface for each wavelength ? of a wavelength band, the Petzval surfaces deviating from each other for different wavelengths. In embodiments, a longitudinal departure p of the Petzval surface at a given wavelength from a planar reference surface at an edge field point of the image field (at maximum image height y?), measured parallel to the optical axis in the image surface region, varies with the wavelength ? according to dp/d?<(0.2?/NA2)/nm.
    Type: Application
    Filed: September 5, 2007
    Publication date: March 5, 2009
    Applicant: Carl Zeiss SMT AG
    Inventor: Alexander Epple
  • Patent number: 7463373
    Abstract: A printer controller for an inkjet printer comprises a purpose-specific microprocessor; connections for linking the microprocessor to an external USB module, a printhead, a paper transport mechanism and a print media sensor; a memory module; a power source connection and an authentication chip. The microprocessor represents an integrated circuit fabricated on a single substrate. The integrated circuit includes a data bus and purpose-specific functional units connected to the data bus. The functional units include a JPEG decoder, a compressed bi-level expander, a halftoner, and a printhead interface. A general-purpose processor may also be connected to the data bus for controlling the functional units. The processor may be connected to run software that coordinates the functional units to receive, expand and print pages.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: December 9, 2008
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Paul Lapstun, Kia Silverbrook
  • Patent number: 7446952
    Abstract: A catadioptric projection objective for imaging an off-axis effective object field arranged in an object surface of the projection objective onto an off-axis effective image field arranged in an image surface of the projection objective has: an optical axis; an effective object field situated entirely outside the optical axis and having a length A in a first direction and a width B in a second direction perpendicular to the first direction such that a circular area of minimum size enclosing the effective object field defines a radius REOF of the effective object field according to: R EOF = ( A / 2 ) 2 + ( B / 2 ) 2 ; and a circular design object field centered around the optical axis having a design object field radius RDOF, where the projection objective is essentially corrected with respect to image aberrations in zones having radial coordinates smaller than RDOF and wherein the projection objective is not fully corrected in zones having radial coordinates larger than RDOF.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: November 4, 2008
    Assignee: Carl Zeiss SMT AG
    Inventor: Alexander Epple
  • Patent number: 7414781
    Abstract: In general, in a first aspect, the invention features a system that includes a microlithography projection optical system. The microlithography projection optical system includes a plurality of elements arranged so that during operation the plurality of elements image radiation at a wavelength ? from an object plane to an image plane. At least one of the elements is a reflective element that has a rotationally-asymmetric surface positioned in a path of the radiation. The rotationally-asymmetric surface deviates from a rotationally-symmetric reference surface by a distance of about ? or more at one or more locations of the rotationally-asymmetric surface.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: August 19, 2008
    Assignee: Carl Zeiss SMT AG
    Inventors: Hans-Juergen Mann, Wilhelm Ulrich, Marco Pretorius
  • Patent number: 7252411
    Abstract: A device for depicting a linear optical marking (36, 38) in a room, including a housing (11) with a light source (16, 18) that emits the light along an optical axis (15, 17), as well as a lens (28, 30) that both reflects the light and allows it to pass through, that is arranged in front of the light source and through which the optical axis extends. In order to be able to illuminate an area of the room with simple design measures, i.e.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: August 7, 2007
    Assignee: Stabila Messgerate Gustav Ullrich GmbH
    Inventors: Daniel Busam, Gabriel Kallabis
  • Patent number: RE42570
    Abstract: An aspheric reduction objective has a catadioptric partial objective (L1), an intermediate image (IMI) and a refractive partial objective (L2). The catadioptric partial objective has an assembly centered to the optical axis and this assembly includes two mutually facing concave mirrors (M1, M2). The cutouts in the mirrors (B1, B2) lead to an aperture obscuration which can be held to be very small by utilizing lenses close to the mirrors and having a high negative refractive power and aspheric lens surfaces (27, 33). The position of the entry and exit pupils can be corrected with aspherical lens surfaces (12, 48, 53) in the field lens groups. The number of spherical lenses in the refractive partial objective can be reduced with aspherical lens surfaces (66, 78) arranged symmetrically to the diaphragm plane. Neighboring aspheric lens surfaces (172, 173) form additional correction possibilities.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: July 26, 2011
    Assignee: Carl Zeiss SMT GmbH
    Inventor: Karl Heinz Schuster
  • Patent number: RE45258
    Abstract: In a projection optical system for use in an image projection apparatus illuminating an image display panel forming an image in accordance with a modulating signal with illumination light from a light source, the projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the image display panel. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the image display panel is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: November 25, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Takaura, Kazuhiro Fujita, Nobuo Sakuma