By Reflection Patents (Class 359/318)
  • Patent number: 7587104
    Abstract: A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated by an orthogonal upper electrode by a cavity. The upper electrode is configured to be movable to modulate light.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 8, 2009
    Assignee: IDC, LLC
    Inventor: Clarence Chui
  • Patent number: 7583429
    Abstract: An ornamental display device having an interferometric modulator for displaying an ornamental image. The ornamental device may have a patterned diffuser formed on a transparent substrate to provide an ornamental image or information. The ornamental device may also be a piece of jewelry or an article that may be worn. The image displayed may have an iridescent appearance. A controller may also be used to control images displayed on multiple ornamental device to provide coordinated images based on externals received or pre-programmed images.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: September 1, 2009
    Assignee: IDC, LLC
    Inventors: Brian J. Gally, William J. Cummings
  • Patent number: 7572035
    Abstract: An illumination obscurement device for controlling the obscurement of illumination from a light source which is optimized for use with a rectangular, arrayed, selective reflection device. In a preferred embodiment, a rotatable shutter with three positions is placed between a light source and a DMD. The first position of the shutter is a mask, preferably an out of focus circle. This out of focus circle creates a circular mask and changes any unwanted dim reflection to a circular shape. The second position of the shutter is completely open, allowing substantially all the light to pass. The third position of the shutter is completely closed, blocking substantially all the light from passing. By controlling the penumbra illumination surrounding the desired illumination, DMDs can be used in illumination devices without creating undesirable rectangular penumbras.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: August 11, 2009
    Inventors: William E. Hewlett, Nigel Evans
  • Publication number: 20090141339
    Abstract: Disclosed are an optical modulator and an optical modulator module that can reduce a laser speckle. The optical modulator module can include an optical modulator, modulating an incident beam of light incident according to a driving signal and outputting the modulated beam of light; and a light transmissive substrate, placed in the optical modulator and formed with a phase control pattern, the incident beam of light and the outputted beam of light passing through the light transmissive substrate and the phase control pattern being formed in a part of a surface that is a light path of the incident beam of light and the outputted beam of light. Here, the phase control pattern, a central peak of an autocorrelation function can have a width that is smaller than a width of the phase control pattern, and a side lobe level is smaller than a level of the central peak.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 4, 2009
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Victor Yurlov, Sang-Kyeong Yun, Jong-Hyeong Song, In-Jae Yeo, Haeng-Seok Yang, Anatoliy Lapchuk
  • Publication number: 20090128885
    Abstract: The present invention provides a spatial light modulator, comprising: a plurality of mirror elements; a plurality of address electrodes for controlling the movement of each of the mirror elements; and first and second control circuits for generating a voltage in the address electrode, wherein the second control circuit applies a voltage to the address electrode when the mirror element is in a moving state.
    Type: Application
    Filed: November 13, 2008
    Publication date: May 21, 2009
    Inventors: Naoya Sugimoto, Kazuma Arai, Yoshihiro Maeda, Fusao Ishii
  • Publication number: 20090122391
    Abstract: Beam deflection devices and methods using piezoelectric tube resonance. A beam deflection device may include a laser that produces a beam of light. The beam of light may then be directed through a piezoelectric tube that includes a light guide and one or more piezoelectric elements. The device may also have an optical tip that extends axially from the end of the piezoelectric tube. The piezoelectric tube is coupled with the light source, such that the beam of light is conducted through the light guide and optionally the optical tip. A controller may be communicatively coupled with the light source and the piezoelectric tube. The controller may include instructions to activate the piezoelectric tube at a resonant frequency of the piezoelectric tube, the light guide, and/or the optical tip. The controller may include instructions to activate one or more of the piezoelectric elements at a different power level.
    Type: Application
    Filed: October 8, 2008
    Publication date: May 14, 2009
    Applicant: Cubic Corporation
    Inventors: Tony Maryfield, Mahyar Dadkhah
  • Patent number: 7532377
    Abstract: Improvements in an interferometric modulator that has a cavity defined by two walls.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: May 12, 2009
    Assignee: IDC, LLC
    Inventor: Mark W. Miles
  • Publication number: 20090086296
    Abstract: This invention relates to a holographic projection device with an array of mirror elements in the form of micro-mirrors. The holographic projection device comprises at least one light modulator device, which contains the array of mirror elements, for an enlargement of a reconstruction space for a reconstructed scene. Each mirror element is coupled with at least one actuator. The actuators tilt the corresponding mirror elements and/or displace them axially in at least one direction. Thereby, a wave front for the representation of a reconstructed scene is directly modulated. The holographic projection device comprises an optical system for the projection of the modulated wave front into at least one observer window in an observer plane.
    Type: Application
    Filed: January 15, 2007
    Publication date: April 2, 2009
    Inventor: Philippe Renaud-Goud
  • Publication number: 20090073547
    Abstract: A light modulation device that improves utilization efficiency of light is provided. The light modulation device includes a light emitter, a Fabry-Perot type of resonator, and a controller for applying a control voltage to the resonator. The resonator includes a light modulating film in which refractive index changes in accordance with an applied electric field, and comb-shaped electrodes for applying the electrical field to the light modulating film. The light emitted from the light emitter is incident to a light-incident plane, the light being substantially perpendicular to a direction of the electrical field applied to the light modulating film, and inclined from a direction normal to the light-incident plane.
    Type: Application
    Filed: April 7, 2006
    Publication date: March 19, 2009
    Applicant: ROHM CO., LTD.
    Inventor: Yoshikazu Fujimori
  • Patent number: 7492503
    Abstract: A display having a plurality of reflective display elements. In one embodiment, the display elements comprise at least one electrode having a plurality of active areas. In one embodiment, at least two of the sizes of the active areas are different with respect to each other, e.g., they are non-uniform in size. The interferometric modulators have a plurality of states, wherein selected ones of the interferometric modulators are configured to be actuated depending differing electrostatic forces in the interferometric modulators. The electrostatic forces in the interferometric modulators are different at least in part due to variations in the sizes of the active areas of the electrodes.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: February 17, 2009
    Assignee: IDC, LLC
    Inventor: Clarence Chui
  • Patent number: 7471444
    Abstract: An Interferometric Modulator (IMod) is a microelectromechanical device for modulating light using interference. The colors of these devices may be determined in a spatial fashion, and their inherent color shift may be compensated for using several optical compensation mechanisms. Brightness, addressing, and driving of IMods may be accomplished in a variety of ways with appropriate packaging, and peripheral electronics which can be attached and/or fabricated using one of many techniques. The devices may be used in both embedded and directly perceived applications, the latter providing multiple viewing modes as well as a multitude of product concepts ranging in size from microscopic to architectural in scope.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: December 30, 2008
    Assignee: IDC, LLC
    Inventor: Mark W. Miles
  • Publication number: 20080316586
    Abstract: Beam steering systems and methods are disclosed according to various embodiments. A beam steering system may include a laser that produces a beam of light. The beam of light may then be directed through a piezoelectric tube that includes a light guide and one or more piezoelectric elements. The piezoelectric tube is coupled with the light source, such that the beam of light is conducted through the light guide. The piezoelectric tube is coupled with a scanning optical element that includes an optical element and a steering device. A controller may be communicatively coupled with the light source, the piezoelectric tube and the scanning optical element. The controller may include instructions to dither the beam of light with the piezoelectric tube and/or instructions to steer the beam of light with the scanning optical element.
    Type: Application
    Filed: June 19, 2008
    Publication date: December 25, 2008
    Applicant: Cubic Corporation
    Inventors: Tony Maryfield, Mahyar Dadkhah
  • Patent number: 7466394
    Abstract: A lithographic apparatus comprising an array of individually controllable elements that modulates a beam of radiation and a projection system that projects the modulated beam onto the substrate. The individually controllable elements are provided with a compensation feature that is arranged to provide compensation radiation that substantially or at least partially cancels out unwanted radiation, such that the unwanted radiation is not projected by the projection system onto the substrate.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: December 16, 2008
    Assignee: ASML Netherlands B.V.
    Inventors: Kars Zeger Troost, Johannes Jacobus Matheus Baselmans
  • Patent number: 7453624
    Abstract: A display system includes a light source and a first optical system coupled to the light source and adapted to provide an illumination beam along an illumination path. The display system also includes a spatial light modulator positioned in the illumination path. The spatial light modulator includes a semiconductor substrate including a plurality of electrode devices and a hinge structure coupled to the semiconductor substrate. The hinge structure includes silicon material. The spatial light modulator also includes a mirror post coupled to the hinge structure and extending to a predetermined distance from the semiconductor substrate and a mirror plate coupled to the mirror post and overlying the plurality of electrode devices. The display system further includes a second optical system coupled to the spatial light modulator and adapted to project an image onto a projection surface.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: November 18, 2008
    Assignee: Miradia Inc.
    Inventors: Xiao Yang, Yuxiang Wang, Wook Ji, Justin Allen Payne, Ye Wang, William Spencer Worley, III, Dongmin Chen, Howard Woo
  • Patent number: 7428092
    Abstract: A spatial light modulator includes a mirror plate comprising a reflective upper surface, a lower surface having a conductive surface portion, and a substrate portion having a first cavity having an opening on the lower surface, a second cavity in the substrate portion, and a membrane over the second cavity. The modulator includes a substrate comprising an upper surface, a hinge support post in connection with the upper surface, a hinge component supported by the hinge support post and in connection with the mirror plate to facilitate a rotation of the mirror plate, and an upright landing tip in connection with the upper surface of the substrate. The hinge component is extends into the first cavity. The upright landing tip is configured to contact the membrane over the second cavity in the substrate portion of the mirror plate to stop the rotation of the mirror plate at a predetermined orientation.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: September 23, 2008
    Assignee: Spatial Photonics, Inc.
    Inventors: Chii Guang Lee, Chun-Teh Kao, Hung Kwei Hu, Shaoher X. Pan
  • Patent number: 7424330
    Abstract: In order to prevent negative effects of imprinting an the addressing accuracy of deformable actuators, a method for controlling deformable actuators has, during an event period, driving the first and the second deformable actuator for causing the deformable actuators to assume a first and a second deformation state, respectively; and, before or after the event period, driving the first and the second deformable actuator for causing the deformable actuators to assume deformations states to counteract an imprinting caused during the event period by approximating the loads applied to the deformable actuators to each other. According to an embodiment, before or after the event period, for a period substantially as long as the operation period, the first and the second deformable actuator are driven such that the first deformable actuator assumes the second deformation state and the second deformable actuator assumes the first deformation state.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: September 9, 2008
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V., Micronic Laser Systems AB
    Inventors: Peter Duerr, Ulric Ljungblad
  • Publication number: 20080192212
    Abstract: A mirror device including: a mirror arranged on a substrate, supported by a hinge, and arranged substantially parallel to the substrate; a plurality of address electrodes for deflecting the mirror to an ON state, an OFF state, or an oscillating state; and a drive circuit for applying a voltage to the plurality of address electrodes. The mirror device is controlled such that a voltage can be applied to a corresponding address electrode to deflect the mirror, and oscillation in the oscillating state can be started from a state of the deflected mirror.
    Type: Application
    Filed: December 24, 2007
    Publication date: August 14, 2008
    Inventors: Yoshihiro Maeda, Fusao Ishii, Hirotoshi Ichikawa, Kazuma Arai
  • Patent number: 7405857
    Abstract: A light managing screen may provide a rear projection screen, front projection screen or component thereof. The screen may comprise a polymeric composition including a first polymeric material, and a second polymeric material disposed as a plurality of elongated structures within the first polymeric material. Each elongated structure has a major axis and the major axes are substantially aligned. The first polymeric material has an index of refraction that differs by at least 0.01 from an index of refraction of the second polymeric material. In some instances, a pressure sensitive adhesive material is selected as the first polymeric material. The orientation of the elongated structures and the difference in indices of refraction results in the polymeric composition scattering light asymmetrically.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: July 29, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Jiaying Ma, Robert S. Moshrefzadeh, Zhiming Zhou, Albert I. Everaerts
  • Publication number: 20080174855
    Abstract: A mirror device which deflects incident light includes: a mirror arranged on a substrate and supported by a hinge; an address electrode deflecting the mirror to an ON state, an OFF state, or an oscillating state; a drive circuit applying a voltage to the address electrode; and a first stopper unit determining an oscillation amplitude in the oscillating state.
    Type: Application
    Filed: December 24, 2007
    Publication date: July 24, 2008
    Inventors: Yoshihiro Maeda, Fusao Ishii, Hirotoshi Ichikawa, Kazuma Arai
  • Patent number: 7397018
    Abstract: An adaptive optics system is provided. The system includes a light source, a pair of deformable mirrors and a detection module. The light source is configured to provide an outgoing beam. The outgoing beam has an amplitude and a phase. The first deformable mirror is configured to reflect the outgoing beam and adjust its associated amplitude. The second deformable mirror is configured to reflect the outgoing beam reflected from the first deformable mirror and adjust its associated phase. The detection module is configured to detect an incoming beam and the reflected outgoing beam from the second deformable mirror and generate certain signals. The signals are used to control the first and second deformable mirrors such that the amplitude of the outgoing beam is the same as that of the incoming beam and the phase of the outgoing beam is opposite that of the incoming beam.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: July 8, 2008
    Assignee: Lockheed Martin Corporation
    Inventors: Ich V. Pham, Gopal Vasudevan
  • Patent number: 7388701
    Abstract: An optical modulator having a junction layer is disclosed. An optical modulator may be provided which includes a substrate, an insulation layer positioned on the substrate, a ribbon layer positioned with an intermediate portion spaced apart from the insulation layer by a predetermined distance, a protective layer positioned on both ends of the ribbon layer, a junction layer positioned on the protective layer which has an adhesive property and which prevents the diffusion of gas, and a piezoelectric element joined with the protective layer by way of the junction layer interposed in-between which moves the intermediate portion of the ribbon layer toward and away from the substrate. In certain embodiments of the invention, the light diffraction property and reliability of the overall optical modulator can be maximized, by positioning a junction layer, having improved adhesion and capable of preventing the diffusion of oxygen, on the lower surface of the piezoelectric elements.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: June 17, 2008
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jeong-Suong Yang, Yun-Jin Ko, Jong-Hyeong Song
  • Patent number: 7372613
    Abstract: A multi-state light modulator comprises a first reflector. A first electrode is positioned at a distance from the first reflector. A second reflector is positioned between the first reflector and the first electrode. The second reflector is movable between an undriven position, a first driven position, and a second driven position, each having a corresponding distance from the first reflector. In one embodiment, the three positions correspond to reflecting white light, being non-reflective, and reflecting a selected color of light. Another embodiment is a method of making the light modulator. Another embodiment is a display including the light modulator.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: May 13, 2008
    Assignee: IDC, LLC
    Inventors: Clarence Chui, William J. Cummings, Brian J. Gally
  • Patent number: 7372620
    Abstract: There is provided a micromirror which includes a holding unit, a mirror that is held by the holding unit to be pivotable about a rotation axis of the mirror, a first fixed electrode group including a plurality of electrodes fixed to the holding unit, a second fixed electrode group including a plurality of electrodes fixed to the holding unit, a first movable electrode group including a plurality of electrodes fixed to the mirror and located adjacently to the first fixed electrode group, and a second movable electrode group including a plurality of electrodes fixed to the mirror and located adjacently to the second fixed electrode group.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: May 13, 2008
    Assignees: Tohoku University, PENTAX Corporation
    Inventors: Masayoshi Esashi, Naoki Kikuchi
  • Patent number: 7373026
    Abstract: A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated by an orthogonal upper electrode by a cavity. The upper electrode is configured to be movable to modulate reflected light. A semi-reflective layer and a transparent material are formed over the movable upper electrode.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: May 13, 2008
    Assignee: IDC, LLC
    Inventor: Clarence Chui
  • Patent number: 7372607
    Abstract: The invention includes an apparatus for modulating an optical signal. The apparatus includes a spatial dispersion mechanism and a modulating mechanism. The spatial dispersion mechanism spatially disperses the optical signal. The spatially dispersed optical signal has a plurality of frequency components where each frequency component has an associated beam size. The modulating mechanism includes an array of modulating components where each modulating component has a pitch. The pitch of each modulating component is substantially equal to or less than the beam size of each frequency component.
    Type: Grant
    Filed: October 1, 2005
    Date of Patent: May 13, 2008
    Assignee: Lucent Technologies Inc.
    Inventor: Dan M. Marom
  • Patent number: 7372608
    Abstract: A light control device includes a substrate, a first reflective layer, a light modulating film in which the refractive index varies according to an applied electric field, a transparent electrode, and a second reflective layer having a reflection characteristic such that the reflection band and transmission band exhibit a steep switching pattern at a specified wavelength. The device is configured such that the specified wavelength and the resonant wavelength of a Fabry-Perot resonator defined by the first reflective layer, the light modulating film, the transparent electrode, and the second reflective layer are substantially the same. The reflection-type light control device has improved light utilization efficiency.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: May 13, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Yoshikazu Fujimori
  • Patent number: 7365895
    Abstract: A display device comprising the following arranged from light input side in the order listed below: a first reflector having a semi-transmissive and semi-reflective property; a translucent porous body having a plurality of pores in which a translucent material is filled, each of the pores having a substantially smaller diameter than the wavelength of input light; and a second reflector having a perfect reflection property, or a semi-transmissive and semi-reflective property. The average complex refractive index of the translucent porous body is changeable with respect to each display dot, and the wavelength of light absorbed by the translucent porous body is changeable with respect to each display dot according to the average complex refractive index. In this way, the input light is modulatable, and the modulated light is outputted from the first reflector and/or the second reflector to perform image display.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: April 29, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Yuichi Tomaru
  • Publication number: 20080094690
    Abstract: An interferometric spatial light modulator comprises of two cavities. One is the optical resonant cavity having a partially reflective film and a movable reflective membrane as two walls, and the other is the electromechanical actuation cavity having the movable reflective membrane and a bottom metal layer as electrodes. The spatial light modulator is built on silicon substrate and is actively addressed. A microdisplay apparatus of such spatial light modulators and a projection display system using such microdisplay are also disclosed.
    Type: Application
    Filed: October 18, 2006
    Publication date: April 24, 2008
    Inventors: Qi Luo, Qiuxian Tai
  • Patent number: 7362485
    Abstract: An image display medium comprising: a display layer; a pair of substrates that retain the display layer therebetween, with at least parts of the pair of substrates configuring a frame portion to which an electrical connection connector for electrical connection to the outside connects, and with at least one of the pair of substrates being transparent; a first scan electrode group; a second scan electrode group; a first electrical contact group; a second electrical contact group; a first connection wire group; and a second connection wire group, wherein the first electrical contact group and the second electrical contact group are disposed apart from each other a distance that is greater than the distance between two mutually adjacent contacts belonging to the first electrical contact group or the second electrical contact group along at least one of a thickness direction and a surface direction of the pair of substrates, is provided.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: April 22, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshiro Yamaguchi, Yoshinori Yamaguchi, Takayuki Takeuchi, Takashi Ozawa, Shigehiko Sasaki
  • Patent number: 7319553
    Abstract: Disclosed herein is an optical modulator module package structure. In the optical modulator module package structure, an optical modulator device and a drive integrated circuit device are flip-chip bonded to a substrate, and an opening of the substrate is blocked using a piece of glass.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: January 15, 2008
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Suk Kee Hong
  • Patent number: 7304782
    Abstract: A driving method of a spatial light modulator array having plural spatial light modulators of micro-electro-mechanical system, the plural spatial light modulators each including: a movable part supported to be capable of being elastically displaced and provided with a movable electrode; and a fixed electrode disposed to face the movable part, wherein in a case where the voltages are applied to the electrodes and the movable part is driven and displaced in a fixed electrode direction, an absolute value of an inter-electrode voltage between the movable electrode and the fixed electrode is decreased while the movable part is transitioning in a direction of the fixed electrode.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: December 4, 2007
    Assignee: FUJIFILM Corporation
    Inventors: Koichi Kimura, Hirochika Nakamura
  • Patent number: 7304784
    Abstract: An interferometric light modulating device having two viewing surfaces is provided. In some embodiments, the device can generate two distinct images, one on each side of the device, simultaneously.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: December 4, 2007
    Assignee: IDC, LLC
    Inventors: Clarence Chui, Mark W. Miles
  • Patent number: 7295360
    Abstract: A structure includes a substrate and a light modulating film formed on top of the substrate. The light modulating film is made of polycrystalline PLZT containing Pb, Zr, Ti, and La as constituent elements. The film has a La concentration in the range of 5 at % to 30 at %. The relative dielectric constant at a frequency of 1 MHz is higher than or equal to 1200.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: November 13, 2007
    Assignee: Rohm Co., Ltd.
    Inventors: Yoshikazu Fujimori, Takashi Nakamura
  • Patent number: 7292382
    Abstract: A light control unit comprises: a substrate; an insulating film; a first transistor; a reflecting film formed on the insulating film; a light modulating film formed on the reflecting film; a plurality of pairs of electrodes arranged two-dimensionally on the light modulating film; and a polarizing plate formed on a first electrode. Here, the light modulating film is made of a material that varies in refractive index in accordance with the intensity of an electric field applied thereto. For such a material, PLZT containing Pb, Zr, Ti, and La as constituent elements may be used.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: November 6, 2007
    Assignee: Rohm Co., Ltd.
    Inventors: Yoshikazu Fujimori, Ken Nakahara, Takashi Nakamura
  • Patent number: 7280265
    Abstract: An Interferometric Modulator (IMod) is a microelectromechanical device for modulating light using interference. The colors of these devices may be determined in a spatial fashion, and their inherent color shift may be compensated for using several optical compensation mechanisms. Brightness, addressing, and driving of IMods may be accomplished in a variety of ways with appropriate packaging, and peripheral electronics which can be attached and/or fabricated using one of many techniques. The devices may be used in both embedded and directly perceived applications, the latter providing multiple viewing modes as well as a multitude of product concepts ranging in size from microscopic to architectural in scope.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: October 9, 2007
    Assignee: IDC, LLC
    Inventor: Mark W. Miles
  • Patent number: 7280267
    Abstract: An optoelectronic system includes an optical signal modulator, an optical input guide and an optical output guide connected to the optical signal modulator. The system further includes a reflective optical element in the optical signal modulator, the element disposed to reflect an input light beam incident through the optical input guide into an output light beam through the optical output guide. The system further includes electrical terminals in the optical signal modulator. The electrical terminals are configured such that an electrical signal on the electrical terminals is operable to interact with the input light beam.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: October 9, 2007
    Assignee: Agilent Technologies, Inc.
    Inventor: Rory L. Van Tuyl
  • Patent number: 7277217
    Abstract: Bearing portions having an approximately arc shape are provided on a lower surface of a plate-shaped member. In the bearing portions, stoppers of a regulating member are embedded. With the engagement of the lower surface of the plate-shaped member and the apex of a pivot member and the engagement of an inner surface of the bearing portions and a lower surface of the stoppers, the plate-shaped member is rotatably supported with the apex of the pivot member as a center. With a side surface of the regulating member 109 facing a side surface of the bearing portions, the position of the plate-shaped member in a rotation axis direction is regulated.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: October 2, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Seiichi Katoh, Takeshi Nanjyo, Koichi Ohtaka
  • Patent number: 7262898
    Abstract: The invention includes an apparatus for modulating an optical signal. The apparatus includes a modulating mechanism comprising a plurality of modulating component arrays, each modulating component array comprising a plurality of modulating components, wherein adjacent ones of the plurality of modulating components in each modulating component array are separated by gaps, and wherein adjacent ones of the plurality of modulating component arrays are offset along a dispersion direction of an incident optical signal such that the gaps associated with the adjacent ones of the plurality of modulating component arrays are offset. In one embodiment, rows of the modulating components in the modulating component arrays are offset along the dispersion direction of the incident optical signal by a fraction of the modulating component pitch.
    Type: Grant
    Filed: October 1, 2005
    Date of Patent: August 28, 2007
    Assignee: Lucent Technologies Inc.
    Inventors: Dan M. Marom, David Thomas Neilson
  • Patent number: 7215461
    Abstract: In one embodiment, a light modulator includes a substrate and a number of modulator elements disposed above and spaced apart from the substrate. Each modulator element has an optically active portion adapted to receive light incident thereon, and a support portion on either side of the active portion to support the modulator element above the substrate. The modulator elements include at least one deflectable modulator element. To shorten damping time, the deflectable modulator element has a lower surface in the support portion that is closer to the substrate than a lower surface under the optically active portion.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: May 8, 2007
    Assignee: Silicon Light Machines Corporation
    Inventors: Omar S. Leung, Alexander P. Payne
  • Patent number: 7209212
    Abstract: The present invention discloses a tunable optical integrated element using liquid crystal as an active layer, which is applied to filters, couplers or optical add/drop multiplexer. The present invention includes a layer of liquid crystal as an active layer, a first waveguide with grating and a second waveguide, an isolation layer, a pair of electrodes. By applying the external voltage to control the direction of the liquid crystal, the refractive index of the waveguide changes in accordance with the modulation of the electric field. Thus invention has the features of simple structure, easy assembling, lower cost and integrating ability.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: April 24, 2007
    Assignee: China Institute of Technology
    Inventors: Wei-Ching Chuang, Ruey-Fang Shyu, Hsiao-Ping Liang, Kun-Yi Lee
  • Patent number: 7207678
    Abstract: Prism elements having TIR surfaces placed in close proximity to the active area of a SLM device to separate unwanted off-state and/or flat-state light from the projection ON-light bundle. The TIR critical angle of these prisms is selected to affect either the off-state light or additionally, any portion of flat-state light reflected from the SLM. To further improve the optical performance of the system, these TIR prisms can be attached directly to the SLM package, completely eliminating the package window.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: April 24, 2007
    Assignee: Texas Instruments Incorporated
    Inventor: Steven M. Penn
  • Patent number: 7196830
    Abstract: An optical deflector including a support substrate, a movable member, a reflective face, and a mounting structure for fixing the support substrate thereto. The movable member is rotatably or swingingly supported by the support substrate through elastic support members. The reflective face is provided on the movable member and deflects light incident thereon when the movable member is swung relatively to the support substrate. In the optical deflector, neutral surfaces of bending in a direction of a normal to the reflective face in the elastic support member and the movable member are not present in the same plane, and the support substrate is fixed to the mounting structure at a face of the support substrate on a side of the neutral surface in the movable member opposite to a side of the neutral surface in the elastic support member.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: March 27, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazutoshi Torashima, Susumu Yasuda, Yasuhiro Shimada
  • Patent number: 7187487
    Abstract: A spatial light modulator includes a first region and a second region. A light-absorbing layer contacts at least a portion of the second region. The light absorbing layer includes a first layer and a second layer, the second layer having a reflectivity less than about 75%.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: March 6, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: James R. Przybyla, Arthur R. Piehl, Michael G. Monroe
  • Patent number: 7183618
    Abstract: An improved hinge for a micro-mirror device composed of a conductive doped semiconductor and immune to plastic deformation at typical to extreme temperatures. The hinge is directly connected to the micro-mirror device and facilitates the manufacturing of an optically flat micro-mirror. This eliminates Fraunhofer diffraction due to recesses on the reflective surface of the micro-mirror. In addition, the hinge is hidden from incoming light thus improving contrast and fill-factor.
    Type: Grant
    Filed: August 14, 2004
    Date of Patent: February 27, 2007
    Inventor: Fusao Ishii
  • Patent number: 7149028
    Abstract: The present invention provides a transmissive-diffractive light modulator in which a substrate having the same structure as that of a conventional diffractive light modulator has a light transmittance gate or is made of a transparent material, thus diffracting incident light while the incident light passes through the substrate.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: December 12, 2006
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Sang Kyeong Yun
  • Patent number: 7133183
    Abstract: Due to an ever growing shortage of conventional energy sources, there is an increasingly intense interest in harnessing solar energy. The instant invention can contribute to the goal of achieving environmentally clean solar energy to be competitive with conventional energy sources. Method and apparatus are presented for coupling to a transparent sheet with an embedded array of preformed or formable mirrored micro-balls for use in a solar energy concentrator, and functionally similar applications such as optical switches and solar rocket assist. Mirrored micro-balls and particulate formable mirrors in cells are covered with a thin spherical shell of lubricating liquid so that they are free to rotate in an almost frictionless encapsulation in the sheet. Induced polarization electric or magnetic dipoles in the mirrors provide a method of controlling the alignment of the mirrored balls. Electrophoretically and magnetophoretically forming mirrors in situ on a rigid surface in a rotatable cell are also disclosed.
    Type: Grant
    Filed: March 6, 2004
    Date of Patent: November 7, 2006
    Inventor: Mario Rabinowitz
  • Patent number: 7130102
    Abstract: This invention deals with the broad general concept for dynamic reflection, illumination and direct image projection. A mini-optics reflection and focussing system is presented that ranges from interior illumination, to exterior illumination, to large scale space based illumination, to ordinary and to telescopic image formation. It can be used both as a source of illumination, and to project images, figures, and the written word. This system has broad applications such as dynamic full color displays. Its use of a novel induced dipole coupling for rotation of planar mirrors lets it operate with greater simplicity and efficiency than other display devices. Furthermore in its capacity as a high altitude active reflector of solar radiation, it can be utilized to supply illumination, energy, and provide climate control.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: October 31, 2006
    Inventor: Mario Rabinowitz
  • Patent number: 7126741
    Abstract: A light modulator assembly includes a substrate, a micro-electro mechanical semiconductor device (MEMS device) formed on the substrate, and a temperature control device coupled to the substrate and configured to maintain the MEMS device at or above an elevated threshold temperature.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: October 24, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William R. Wagner, Winthrop D. Childers
  • Patent number: 7113339
    Abstract: The interferometric modulator of the invention includes a transparent substrate (refractive index: n0) 12, an optical thin film (complex index of refraction: N1=n1?i·k1) 13 provided on the transparent substrate 12, and an absorber layer (complex index of refraction: Ns=ns?i·ks) 14 opposed to the optical thin film 13, the distance of a gap to the optical thin film 13 being variable, wherein the relation n1>n0, k1?0 and ns>n0 is satisfied.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: September 26, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tokio Taguchi, Shun Ueki, Kazuhiko Tsuda
  • Patent number: 7106495
    Abstract: A substrate is provided with a light reflection film in which the heights of a plurality of convex portions or the depths of concave portions formed on a base material are specified to be substantially the same. The two-dimensional shapes of the plurality of convex portions or concave portions are specified to be the two-dimensional shapes of independent circles and polygons, or of either of them. In addition, the plurality of convex portions or concave portions are arranged in the direction of the plane on a random basis. The substrate is formed using a mask in which light transmission portions or light non-transmission portions are formed in units of dots, the number thereof being smaller than the number of dot regions. The dots are arranged irregularly in each of the units, and a plurality of units are included.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: September 12, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki