Cylindrical Lenslets Patents (Class 359/623)
  • Patent number: 10197885
    Abstract: An illumination device for illuminating a target to be combated includes a laser light source for emitting light along a beam path, a first modulator in the beam path and configured to manipulate a direction of the beam path in a first plane, a phase plate in the beam path having a variety of different optical thicknesses, and a control device connected to the light source and the first modulator and is configured to activate the first modulator using different frequencies, so that the beam path is deflected over a control period of time up to a first angle.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: February 5, 2019
    Assignee: MBDA Deutschland GmbH
    Inventor: Rudolf Protz
  • Patent number: 10025108
    Abstract: The assembly to homogenize a light beam, especially from an excimer laser, has at least two optical functional surfaces (26) in succession along the light path (z). Two groups of refractive or diffractive imaging elements are at the optical surfaces as cylinder lenses (30, 30?, 32), with at least two imaging elements of different characteristics within at least one of the groups. The light beam is finally carried through a Fourier lens (28) to the working plane (29).
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: July 17, 2018
    Assignee: LIMO PATENTVERWALTUNG GmbH & Co. KG
    Inventor: Thomas Mitra
  • Patent number: 8891170
    Abstract: A deflecting mirror which deflects a laser beam emitted from a laser oscillator, a transfer lens, a cylindrical lens array which divides the laser beam having passed through the transfer lens into a plurality of laser beams, and a condensing lens which superposes the laser beams formed in the cylindrical lens array are included. The following formula is satisfied: 1/f=1/(a+b)+1/c, when: “a” is a distance between an emission opening of the laser oscillator and the deflecting mirror; “b” is a distance between the deflecting mirror and the transfer lens; “c” is a distance between the transfer lens and an incidence plane of the cylindrical lens array; and “f” is a focal length of the transfer lens.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: November 18, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Hirotada Oishi
  • Patent number: 8824053
    Abstract: Two aperture members are disposed on each side of a lens array. In one aperture member, decreasingly tapered through holes having a cross sectional area that gradually decreases in a light incident direction and increasingly tapered through holes having a cross sectional area that gradually increases in the light incident direction are alternatively arranged. The other aperture member that is oppositely disposed with respect to the lens array has the same configuration. The center axes of the decreasingly tapered through holes and the center axes of the increasingly tapered through holes are coincident with each other. This enables to achieve an image forming optical element that has a large amount of light and less irregularity of the amount of light.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: September 2, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Kei Yokota, Shoichi Kitagawa
  • Patent number: 8804246
    Abstract: Devices and methods for maintaining the brightness of laser emitter bar outputs having multiple emitters for coupling and other applications. In some embodiments, at least one brightness enhancement optic may be used in combination with a beam reformatting optic.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: August 12, 2014
    Assignee: II-VI Laser Enterprise GmbH
    Inventors: Edmund L. Wolak, Oscar D. Romero, Jr., James Harrison, Sang-Ki Park
  • Publication number: 20140192417
    Abstract: A method and apparatus for two-dimensional wavelength beam combining of laser sources. In one example, an external cavity multi-wavelength laser includes an array of laser emitters each producing an optical beam having a specified wavelength, a grating stack comprising a plurality of first-order diffraction gratings arranged linearly in a first dimension, and a dispersive element. The laser further includes a cylindrical telescope that images the optical beams from the array of laser emitters onto the grating stack. A first cylindrical transform lens spatially overlaps the optical beams in a second dimension forming a first region of overlap at the grating stack. A second cylindrical transform lens spatially overlaps the optical beams from the grating stack in the first dimension forming a second region of overlap at the dispersive element. The dispersive element transmits a multi-wavelength output beam comprising the spatially overlapped optical beams from the array of laser emitters.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 10, 2014
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Bien Chann, Tso Yee Fan, Antonio Sanchez-Rubio
  • Patent number: 8740387
    Abstract: An autostereoscopic display apparatus is provided and includes a first lenticular lens array, a second lenticular lens array, an optical diffuser layer, an image projector module and a switch unit. The optical diffuser layer is disposed between the first lenticular lens array and the second lenticular lens array. Multiple image beams generated by the image projector module are projected to a plurality of observing regions on an observing plane through the first lenticular lens array, the optical diffuser layer and the second lenticular lens array. The switch unit rotates the second lenticular lens array in accordance with the autostereoscopic display apparatus operates situated at a three-dimensional (3D) display mode or a two-dimensional (2D) display mode.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: June 3, 2014
    Assignee: Delta Electronics, Inc.
    Inventor: June-Jei Huang
  • Patent number: 8724080
    Abstract: An optical raster element for an illumination system of a microlithographic projection exposure apparatus includes an array of refractive optical elements extending on a planar or curved surface. At least two of the optical elements are arranged side by side along a reference direction with a pitch of less than 2 mm. They have a height perpendicular to the surface of less than 50 ?m and a surface profile along the reference direction which includes a central section, two transition sections adjacent the central section and two end sections adjacent the transition sections. The curvatures in the two transition sections are greater than the curvatures in the central section and the end sections. The optical raster element is intended for being used as a first channel plate in an optical integrator (honeycomb condenser) and can reduce the maximum light intensities occurring in or behind the second channel plate.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: May 13, 2014
    Assignee: Carl Zeiss SMT GmbH
    Inventor: Michael Patra
  • Patent number: 8693101
    Abstract: A lens sheet having one or more lens arrays positioned in selected discrete areas. Each lens array includes a plurality of lenses, each having a width, a height, and a lens peak. The lens array is set below the planar surface of the lens sheet, such that lens array does not extend above the lens sheet. Furthermore, the lens array is completely bordered by or contained within planar portions of the lens sheet. One or more dimensional images are printed below each of the lens arrays, and/or one or more static images can be printed on the planar portions of the lens sheet.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: April 8, 2014
    Assignee: Travel Tags, Inc.
    Inventors: John Tomczyk, Jonathan Van Loon, David E. Corey
  • Patent number: 8614853
    Abstract: A method and apparatus for two-dimensional wavelength beam combining of laser sources. In one example, an external cavity multi-wavelength laser includes an array of laser emitters each producing an optical beam having a specified wavelength, a grating stack comprising a plurality of first-order diffraction gratings arranged linearly in a first dimension, and a dispersive element. The laser further includes a cylindrical telescope that images the optical beams from the array of laser emitters onto the grating stack. A first cylindrical transform lens spatially overlaps the optical beams in a second dimension forming a first region of overlap at the grating stack. A second cylindrical transform lens spatially overlaps the optical beams from the grating stack in the first dimension forming a second region of overlap at the dispersive element. The dispersive element transmits a multi-wavelength output beam comprising the spatially overlapped optical beams from the array of laser emitters.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: December 24, 2013
    Assignee: Massachusetts Institute of Technology
    Inventors: Bien Chann, Tso Yee Fan, Antonio Sanchez-Rubio
  • Patent number: 8611013
    Abstract: An optical integrator is able to keep down a light-quantity loss in modified illumination with an illumination optical apparatus. An optical integrator of a wavefront division type according to the present invention has a plurality of refracting surface regions which refract incident light, and a plurality of deflecting surface regions provided corresponding to the plurality of refracting surface regions and adapted for changing a traveling direction of the incident light. The plurality of refracting surface regions include a plurality of first refracting surface regions includes an arcuate contour with the center projecting in a first direction, and a plurality of second refracting surface regions includes an arcuate contour with the center projecting in a second direction.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: December 17, 2013
    Assignee: Nikon Corporation
    Inventor: Osamu Tanitsu
  • Patent number: 8514492
    Abstract: The invention concerns a multilayer body and a process for producing a multilayer body. The multilayer body has a transparent first layer in which a multiplicity of cylindrical lenses of a length of more than 2 mm and a width of less than 400 ?m are shaped, which are arranged in accordance with a microlens grid spanning a first co-ordinate system having a co-ordinate axis X1 which is determined by the focal point lines of the cylindrical lenses, and a co-ordinate axis Y2 perpendicular thereto.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: August 20, 2013
    Assignee: OVD Kinegram AG
    Inventors: Andreas Schilling, Wayne Robert Tompkin
  • Patent number: 8503083
    Abstract: A lens sheet for both a microlens and a lenticular lens includes a first lenticular lens layer having semicircular convex lenses which are arranged in parallel; a refraction control adhesive layer formed under the first lenticular lens layer; a second lenticular lens layer formed under the refraction control adhesive layer and having semicircular convex lenses which are arranged in parallel; a focal distance layer formed under the second lenticular lens layer; and a three-dimensional layer formed under the focal distance layer, wherein an extension direction of the semicircular convex lenses arranged in the first lenticular lens layer and an extension direction of the semicircular convex lenses arranged in the second lenticular lens layer are crossed with each other.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: August 6, 2013
    Inventor: Jeong Sik Seo
  • Publication number: 20130063671
    Abstract: The present disclosure relates generally to an optical element, a light projector that includes the optical element, and an image projector that includes the optical element. In particular, the optical element provides an improved uniformity of light by homogenizing the light with lenslet arrays, such as “fly-eye arrays” (FEA). The FEA is positioned to homogenize an unpolarized combined light before the light is converted to a single polarization state.
    Type: Application
    Filed: May 18, 2011
    Publication date: March 14, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Zhisheng Yun, Andrew J. Ouderkirk, Kim Leong Tan, Andrew T. Tio
  • Patent number: 8379311
    Abstract: A micro-lens array and a method for fabricating a micro-lens includes forming a first lens formation material layer on and/or over a micro-lens formation area of a semiconductor substrate, and then forming a portion of the lens formation material layer as a first micro-lens using a first mask. A second lens formation material layer is formed adjacent to the first micro-lens on and/or over the micro-lens formation area. The second lens formation material layer is also formed as a second micro-lens using a second mask which is a different type from that of the first mask.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: February 19, 2013
    Assignee: Dongbu HiTek Co., Ltd.
    Inventors: Young Je Yun, Jin Ho Park
  • Patent number: 8284452
    Abstract: A method is disclosed for screening color separations of a lenticular image with a lenticular frequency of the lenticular lenses needed for viewing the lenticular image. An amplitude-modulated halftone image is calculated for each of the color separations at a screen angle and at a screen frequency, the tangent of the screen angle being a rational number. For a specific color separation, a screen angle relating to the direction perpendicular to the image strips of the lenticular image is defined, a pair of whole numbers whose ratio is equal to the tangent of the screen angle is determined, and the screen frequency of the color separation is calculated as the product of the lenticular frequency and the square root of the sum of the squares of the two whole numbers.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: October 9, 2012
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Dietrich Blum
  • Publication number: 20120194794
    Abstract: An illumination system comprising an array of controllable mirrors configured to direct radiation towards a pupil plane and an array of lenses configured to direct radiation sub-beams towards the array of controllable mirrors, wherein a first lens of the array of lenses and a controllable mirror of the array of controllable mirrors forms a first optical channel having a first optical power and a second lens of the array of lenses and a controllable mirror of the array of controllable mirrors forms a second optical channel having a second optical power, such that a radiation sub-beam formed by the first optical channel has a first cross-sectional area and shape at the pupil plane and a radiation sub-beam formed by the second optical channel has a second different cross-sectional area and/or shape at the pupil plane.
    Type: Application
    Filed: January 30, 2012
    Publication date: August 2, 2012
    Applicant: ASML Netherlands B.V.
    Inventor: Andrey Sergeevich TYCHKOV
  • Patent number: 8231228
    Abstract: A method for illuminating the surface of an object by using a source beam is provided. The source beam is partitioned into as many illumination sub-beams as there are surface elements to be illuminated, and their aperture is modulated as a function of the predetermined luminous intensity to be assigned to the surface element. Each surface element is illuminated with the aid of one of said illumination sub-beams. Used for illuminating the imagers of projection devices, this method makes it possible to add a second modulation stage allowing the display contrast of the images to be improved.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: July 31, 2012
    Assignee: Thomson Licensing
    Inventors: Valter Drazic, Khaled Sarayeddine
  • Publication number: 20110304920
    Abstract: The present invention is to provide a laser irradiation technique for irradiating the irradiation surface with the laser beam having homogeneous intensity distribution using a cylindrical lens array without being affected by the intensity distribution of the original beam. A laser beam emitted from a laser oscillator is divided by two kinds of cylindrical lens arrays into a plurality of beams, which are two kinds of linear laser beams with their energy intensity distribution inverted each other, and the two kinds of linear laser beams are superposed in a minor-axis direction. This can form the linear laser beam having homogeneous intensity distribution on the irradiation surface.
    Type: Application
    Filed: August 24, 2011
    Publication date: December 15, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Koichiro TANAKA, Hirotada OISHI
  • Patent number: 8059340
    Abstract: Provided is a method and system for reducing speckle in an image produced from a light source. The method, in one embodiment, includes providing a line generating element, the line generating element having a collection of optical elements having an axis. The method, in this embodiment, further includes directing an input beam of light at the line generating element while the line generating element is being vibrated back and forth in a direction substantially transverse to the axis.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 15, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Sajjad A. Khan, Steven Paul Krycho
  • Patent number: 8045271
    Abstract: The present invention is to provide a laser irradiation technique for irradiating the irradiation surface with the laser beam having homogeneous intensity distribution using a cylindrical lens array without being affected by the intensity distribution of the original beam. A laser beam emitted from a laser oscillator is divided by two kinds of cylindrical lens arrays into a plurality of beams, which are two kinds of linear laser beams with their energy intensity distribution inverted each other, and the two kinds of linear laser beams are superposed in a minor-axis direction. This can form the linear laser beam having homogeneous intensity distribution on the irradiation surface.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: October 25, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Hirotada Oishi
  • Patent number: 8023193
    Abstract: An illumination system including at least one coherent light source, a light uniforming device and a lenticular sheet module is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming device is disposed on a transmission path of the coherent beam. The lenticular sheet module disposed on a transmission path of the coherent beam and between the coherent light source and the light uniforming device, includes a first lenticular sheet and a second lenticular sheet. The first lenticular sheet includes a plurality of first rod-like lenticulars disposed side by side extending along a first extending direction. The second lenticular sheet disposed between the first lenticular sheet and the light uniforming device, includes a plurality of second rod-like lenticulars disposed side by side extending along a second extending direction. The first extending direction and the second extending direction make an angle greater than 0 degree.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: September 20, 2011
    Assignee: Young Optics Inc.
    Inventor: S-Wei Chen
  • Patent number: 8002413
    Abstract: There is provided a light source unit which includes a luminescent light source which receives excitation light so as to emit light of a predetermined wavelength band, excitation light sources which shine excitation light on to the luminescent light source, a reflection space having the luminescent light source in an interior thereof and an emission space which emits luminescent light source light emitted from the reflection space from an emission port whose area is made smaller than the area of the luminescent light source and a projector which employs the light source unit.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: August 23, 2011
    Assignee: Casio Computer Co., Ltd.
    Inventor: Tetsuro Narikawa
  • Patent number: 8000016
    Abstract: A deflecting mirror which deflects a laser beam emitted from a laser oscillator, a transfer lens, a cylindrical lens array which divides the laser beam having passed through the transfer lens into a plurality of laser beams, and a condensing lens which superposes the laser beams formed in the cylindrical lens array are included. The following formula is satisfied: 1/f=1/(a+b)+1/c, when: “a” is a distance between an emission opening of the laser oscillator and the deflecting mirror; “b” is a distance between the deflecting mirror and the transfer lens; “c” is a distance between the transfer lens and an incidence plane of the cylindrical lens array; and “f” is a focal length of the transfer lens.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: August 16, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Hirotada Oishi
  • Patent number: 7993017
    Abstract: A projection display apparatus 101 in which the light quantity adjusting means has a simple and readily interchangeable structure, and which can improve image quality by adjusting the quantity of light received by a light valve continuously, without causing illuminance irregularities, and without having unwanted light radiated onto the screen, the light quantity adjusting means 9 having light blocking members 91L, 91R for blocking light in transit to a second lens array 22, and rotational axes 91LA, 91RA for turnably supporting each of the light blocking members on an xy plane, the light blocking members 91L, 91R and rotational axes 91LA, 91RA being positioned so that the rotational axes 91LA, 91RA are disposed in positions symmetric with respect to the optical axis AX on the xy plane, and the turning range from the light blocking initiation position at which the light blocking members 91L, 91R, by being turned, start to block light in transit toward the second lens array 22 to the maximum light blocking posi
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: August 9, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akihiro Yamada, Motoo Takahashi, Akira Daijogo, Tomohiro Bessho, Kenji Samejima
  • 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: 7929211
    Abstract: An optical film comprises a transparent substrate including a top surface and a bottom surface; a micro-hemisphere layer disposed on the top surface of the transparent substrate and having a plurality of hemispheric projections, and an unsmooth diffusion layer disposed on the bottom layer of the transparent substrate. The micro-hemisphere layer condenses a light. The unsmooth diffusion surface diffuses a light.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: April 19, 2011
    Assignee: Eternal Chemical Co., Ltd.
    Inventor: Shih-Yi Chuang
  • 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: 7839573
    Abstract: A device for the homogenization of radiation, preferably light, using chirped microlens arrays (cMLA) from the established regular microlens arrays (rMLA), chirped microlens arrays are an arrangement of non-identical lenses in one array. Non-identical means that the lens parameters of the lenses of the array, such as e.g. the radius of curvature, the free diameter, vertex position, and others, can vary from lens to lens or cell to cell. The parameters of each lens or cell can be determined by functions (analytically, numerically), the functions preferably being dependent upon the position of the cell or the lens in the array.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: November 23, 2010
    Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V.
    Inventors: Frank Wippermann, Andreas Bräuer, Peter Schreiber
  • Patent number: 7821718
    Abstract: A laser beam emission is collimated by optics. The collimated beam is shaped into an expanding planar laser beam by line generator optics. The expanding planar laser beam is collimated by other optics such that a beam having a generally rectangular cross-section is derived. The resulting beam can be used in ink drop detection and/or other applications.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: October 26, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alexander Govyadinov, Lenward Seals
  • Publication number: 20100259831
    Abstract: An optical fiber micro array lens is provided along with an associated fabrication method. The micro array lens is fabricated from a mesh of optical fibers. The mesh includes a first plurality of cylindrical optical fibers. Each fiber from the first plurality has a flat bottom surface and a hemicylindrical top surface. The top and bottom surfaces are aligned in parallel with a central fiber axis. The mesh also includes a second plurality of cylindrical optical fibers. Each fiber from the second plurality has a hemicylindrical bottom surface overlying and in contact with the top surfaces of the first plurality of optical fibers, and a flat top surface. The top and bottom surfaces are aligned in parallel with a central fiber axis. Each contact of the first and second plurality of optical fibers forms a lens assembly in a micro array of lenses.
    Type: Application
    Filed: June 23, 2010
    Publication date: October 14, 2010
    Inventor: Joseph Martin Patterson
  • Patent number: 7782535
    Abstract: A device for beam shaping is particularly suited for producing a linear intensity distribution in a working plane. The device includes a laser light source, which can emit a multi-mode laser radiation. The beam quality factor of the radiation with regard to a first direction perpendicular to the propagation direction of the laser radiation is greater than 1 and also the beam quality factor with regard to a second direction perpendicular to the propagation direction is greater than 1. The device further includes a beam transformation assembly, which are arranged in the device in such a way that they can transform the laser radiation or partial beams of the laser radiation in such a way that the beam quality factor with regard to the first direction is increased and that the beam quality factor with regard to the second direction is reduced.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: August 24, 2010
    Assignee: Limo Patentverwaltung GmbH & Co. KG
    Inventors: Iouri Mikliaev, Vitalij Lissotschenko, Aleksei Mikhailov, Maxim Darsht
  • Patent number: 7684119
    Abstract: A device for homogenizing light contains at least one optically functional surface through which light to be homogenized can pass and a plurality of concave and convex cylindrical lenses which are disposed in an alternating fashion one next to the other on the at least one optically functional surface. The device further has at least one first embodiment and at least one second embodiment, different from the at least one first embodiment, of transitions between the concave and the convex cylindrical lenses. Wherein the transitions between the concave and the convex cylindrical lenses are configured such that partial beams of the light to be homogenized, which have passed through different embodiments of the transitions between the concave and the convex cylindrical lenses, have an optical path difference with respect to one another, which contributes to the reduction of interference effects in the homogenized light.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: March 23, 2010
    Assignee: LIMO Patentverwaltung GmbH & Co KG
    Inventors: Vitalij Lissotschenko, Aleksei Mikhailov, Maxim Darsht, Iouri Mikliaev
  • Publication number: 20100033829
    Abstract: A device for the homogenization of radiation, preferably light, using chirped microlens arrays (cMLA) from the established regular microlens arrays (rMLA), chirped microlens arrays are an arrangement of non-identical lenses in one array. Non-identical means that the lens parameters of the lenses of the array, such as e.g. the radius of curvature, the free diameter, vertex position, and others, can vary from lens to lens or cell to cell. The parameters of each lens or cell can be determined by functions (analytically, numerically), the functions preferably being dependent upon the position of the cell or the lens in the array.
    Type: Application
    Filed: October 5, 2007
    Publication date: February 11, 2010
    Applicant: Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V.
    Inventors: Frank Wippermann, Andreas Bräuer, Peter Schreiber
  • Publication number: 20090291569
    Abstract: The present invention is to provide a laser irradiation technique for irradiating the irradiation surface with the laser beam having homogeneous intensity distribution using a cylindrical lens array without being affected by the intensity distribution of the original beam. A laser beam emitted from a laser oscillator is divided by two kinds of cylindrical lens arrays into a plurality of beams, which are two kinds of linear laser beams with their energy intensity distribution inverted each other, and the two kinds of linear laser beams are superposed in a minor-axis direction. This can form the linear laser beam having homogeneous intensity distribution on the irradiation surface.
    Type: Application
    Filed: August 5, 2009
    Publication date: November 26, 2009
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Koichiro Tanaka, Hirotada Oishi
  • Patent number: 7623292
    Abstract: It is an object of the present invention to provide a laser irradiation apparatus, a laser irradiation method, and a method for manufacturing a semiconductor device using the laser irradiation method that can suppress the energy distribution of the laser beam. The present invention provides a laser irradiation apparatus including a laser oscillator oscillating a pulsed laser beam, a lens assembly having a plurality of optical systems, position control means for controlling the position of the lens assembly to select at least two from the plurality of optical systems in synchronization with oscillations of a plurality of pulses of the pulsed laser beam, wherein the selected plurality of optical systems forms a plurality of pulses with spatial energy distribution inverted or rotated each other.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: November 24, 2009
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Tomoaki Moriwaka, Yoshiaki Yamamoto
  • Publication number: 20090284954
    Abstract: A backlight device 10 according to the invention includes an optical member 17 provided on a surface light source. The optical member 17 includes a lenticular lens sheet 14 having a plurality of cylindrical lenses CL1 arranged in parallel to one another and a lenticular lens sheet 15 provided on the lenticular lens sheet 14 and having a plurality of cylindrical lenses CL2 arranged in parallel to one another. Therefore, light emitted obliquely to the front surface can be restrained and improved front side brightness is provided.
    Type: Application
    Filed: October 20, 2006
    Publication date: November 19, 2009
    Inventors: Yukinori Yamada, Masataka Sato
  • Patent number: 7595932
    Abstract: The present invention is to provide a laser irradiation technique for irradiating the irradiation surface with the laser beam having homogeneous intensity distribution using a cylindrical lens array without being affected by the intensity distribution of the original beam. A laser beam emitted from a laser oscillator is divided by two kinds of cylindrical lens arrays into a plurality of beams, which are two kinds of linear laser beams with their energy intensity distribution inverted each other, and the two kinds of linear laser beams are superposed in a minor-axis direction. This can form the linear laser beam having homogeneous intensity distribution on the irradiation surface.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: September 29, 2009
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Hirotada Oishi
  • Patent number: 7561335
    Abstract: The optical lens 1 in accordance with the present invention comprises an optically effective part 5, formed as a curved surface in at least one of light-entrance and light-exit faces, for acting in an X-axis direction on light emitted from a light-emitting device; and a pair of protrusions 10, integrally formed in the face on the side provided with the optically effective part 5, projecting in an optical axis direction on both sides of a light-transmitting area; the pair of protrusions 10 projecting beyond a surface of the optically effective part. Such an optical lens 1 can prevent the optically effective part 5 from coming into direct contact with an arrangement surface where the optical lens 1 is placed, side faces of members adjacent to the optical lens 1, and the like in each manufacturing step, during delivery, and so forth, whereby the optically effective part 5 is hard to incur damages and the like.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: July 14, 2009
    Assignee: Hamamatsu Photonics K.K.
    Inventor: Yutaka Kusuyama
  • Patent number: 7557991
    Abstract: It is an object of the present invention to provide a laser irradiation apparatus which can form a linear beam spot with a short optical path length, form a linear beam spot being long in a long-side direction, and reduce displacement of a condensing point at opposite ends in a direction of its line. In a laser irradiation apparatus having an optical system for shaping a laser beam emitted from a laser oscillator into a linear beam spot having a long-side direction and a short-side direction, the optical system includes a long-side direction condensing cylindrical lens disposed between a first short-side direction condensing cylindrical lens and a second short-side direction condensing cylindrical lens. Displacement of a position of a homogeneous plane is generated by the long-side direction condensing cylindrical lens so that a distance from the homogeneous plane to the second short-side direction condensing cylindrical lens is constant not depending on a field angle.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: July 7, 2009
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Hirotada Ohishi
  • Publication number: 20090168187
    Abstract: A lens element comprising: a rear substrate having a front surface provided with a surface relief having a plurality of zones each capable of providing a lens effect; a front substrate disposed in front of the rear substrate and having a rear surface provided with a surface relief having a plurality of zones each capable of providing a lens effect, the zones of the surface reliefs provided on the rear substrate and the front substrate having the same spatial arrangement over the area of the lens element; and solid or liquid, isotropic, intermediate material disposed between the front surface of the rear substrate and the rear surface of the front substrate, the intermediate material having a refractive index different from the refractive index of each of the rear substrate and the front substrate. This construction reduces the degree of Fresnel reflection which would otherwise degrade the optical performance.
    Type: Application
    Filed: January 23, 2007
    Publication date: July 2, 2009
    Inventors: Graham John Woodgate, Jonathan Harrold
  • Patent number: 7548374
    Abstract: A packaged container for producing a graphical image. The packaged container includes a container having a side wall defining an interior space and a recessed surface. An interlaced image is provided on the recessed surface, and the packaged container includes a lens element positioned on the side wall to extend across the recessed surface proximate to the printed image and to leave a focusing gap between the lens element and the interlaced image. The lens element includes a plurality of lenses each having a focal point on or about the interlaced image. The lenses have a focal length determined by the thickness of the lens element combined with a depth of the recessed surface as measured from a side of the lens element to the interlaced image. The lens element can be provided in a wrap around label attached to the side wall on both sides of the recessed surface.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: June 16, 2009
    Assignee: Genie Lens Technologies, LLC
    Inventors: Mark A. Raymond, Seth Weiss
  • Patent number: 7545568
    Abstract: A container for producing a graphical image. The container includes a container wall with front and rear portions. A label is included that extends about the circumference of the container with an inner surface contacting an exterior surface of the rear portion of the container wall and contacting an exterior surface of the front portion of the container wall. The label includes a block out grid made up of alternating block out lines and transparent viewing gaps on the outer or inner surface of the label. The view gaps provide a line of sight to subset of the segments of an interlaced image provided on or proximate to the rear portion of the container wall when the block out grid is positioned near the front portion of the container wall. The label may be used to create an air gap between the block out grid and the interlaced image.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: June 9, 2009
    Assignee: Genie Lens Technologies, LLC
    Inventors: Mark A. Raymond, Seth Weiss
  • Patent number: 7532406
    Abstract: A device for homogenizing light has at least two cylindrical lens arrays which are placed one behind the other in a direction of diffusion of the light to be homogenized and which each have convex and concave cylindrical lenses disposed next to one another in an alternating manner, the cylinder axes of these cylindrical lenses are aligned parallel to one another. In the direction, in which the cylindrical lenses are disposed next to one another, the concave cylindrical lenses of the first cylindrical lens array have a shaping, in particular, an extension or curvature different from that of the concave cylindrical lenses of the second cylindrical lens arrays.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: May 12, 2009
    Assignee: Hentze-Lissotschenko Patentverwaltungs GmbH & Co. KG
    Inventors: Wieland Hill, Mikhail Petrov, Heiko Ganser
  • Patent number: 7527382
    Abstract: An image projection lighting device is provided which includes a variable homogenizing system. The variable homogenizing system may homogenize light projected by a lamp across a light valve. The variable homogenizing system may vary the light across the light valve from an existing state to a first state or from an existing state to a second state. The variable homogenizing system may be comprised of one or more lens arrays, which may be comprised of cylindrical or spherical lenses.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: May 5, 2009
    Inventor: Richard S. Belliveau
  • Publication number: 20090059584
    Abstract: An illumination system including at least one coherent light source, a light uniforming device and a lenticular sheet module is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming device is disposed on a transmission path of the coherent beam. The lenticular sheet module disposed on a transmission path of the coherent beam and between the coherent light source and the light uniforming device, includes a first lenticular sheet and a second lenticular sheet. The first lenticular sheet includes a plurality of first rod-like lenticulars disposed side by side extending along a first extending direction. The second lenticular sheet disposed between the first lenticular sheet and the light uniforming device, includes a plurality of second rod-like lenticulars disposed side by side extending along a second extending direction. The first extending direction and the second extending direction make an angle greater than 0 degree.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Applicant: YOUNG OPTICS INC.
    Inventor: S-Wei Chen
  • Patent number: 7457039
    Abstract: A packaged container for producing a graphical image. The packaged container includes a container having a side wall defining an interior space and a recessed surface. An interlaced image is provided on the recessed surface, and the packaged container includes a lens element positioned on the side wall to extend across the recessed surface proximate to the printed image and to leave a focusing gap between the lens element and the interlaced image. The lens element includes a plurality of lenses each having a focal point on or about the interlaced image. The lenses have a focal length determined by the thickness of the lens element combined with a depth of the recessed surface as measured from a side of the lens element to the interlaced image. The lens element can be provided in a wrap around label attached to the side wall on both sides of the recessed surface.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: November 25, 2008
    Assignee: Genie Lens Technologies, LLC
    Inventors: Mark A. Raymond, Seth Weiss
  • Patent number: 7456371
    Abstract: The present invention provides a laser apparatus including a transmission-variable mirror and a method for forming a semiconductor device using the apparatus. For crystallizing an amorphous semiconductor film by irradiation of laser beams, a top surface and a back surface of the amorphous semiconductor film are irradiated with the laser beams. In this case, the transmission-variable mirror is used for dividing a laser light emitted from a laser source.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: November 25, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kenji Kasahara, Ritsuko Kawasaki, Hisashi Ohtani, Koichiro Tanaka
  • Patent number: 7450307
    Abstract: It is an object of the present invention to provide a laser irradiation apparatus, a laser irradiation method, and a method for manufacturing a semiconductor device using the laser irradiation method that can suppress the energy distribution of the laser beam. The present invention provides a laser irradiation apparatus including a laser oscillator oscillating a pulsed laser beam, a lens assembly having a plurality of optical systems, position control means for controlling the position of the lens assembly to select at least two from the plurality of optical systems in synchronization with oscillations of a plurality of pulses of the pulsed laser beam, wherein the selected plurality of optical systems forms a plurality of pulses with spatial energy distribution inverted or rotated.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: November 11, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Tomoaki Moriwaka, Yoshiaki Yamamoto
  • Patent number: RE41240
    Abstract: A zoomable light beam spreader comprising first and second multiple-lens arrays includes a plurality of plano-convex lenses in correspondence with a plurality of plano-concave lenses having matched, curved optical surfaces. In a zero-power state, the two multiple-lens arrays are very closely spaced so that the matched convex and concave surfaces effectively cancel each other optically but, as the two arrays are separated coaxially along the axis of a light beam, beam divergence angle increases as a function of the distance of separation. A large amount of beam divergence is obtained when the curved surfaces of the plano-concave lenses of the second array are positioned beyond the focus points of the plano-convex lenses of the first array.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: April 20, 2010
    Assignee: Genlyte Thomas Group LLC
    Inventor: Thomas A. Hough