Diffraction Patents (Class 359/558)
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Patent number: 8639072Abstract: There is provided a wearable display comprising a light source emitting light of a first wavelength; a first SBG device having a front side and a rear side; first and second transparent plates sandwiching said SBG device; independently switchable transparent electrode elements applied to the opposing surfaces of said transparent plates, a means for spatio-temporally modulating light from the light source to provide image light and a means for coupling the image light into the light guide formed by the two transparent plates and the SBG device. The SBG device comprises a multiplicity of selectively switchable grating regions. The SBG device diffracts image into the pupil of an eye.Type: GrantFiled: October 19, 2011Date of Patent: January 28, 2014Inventors: Milan Momcilo Popovich, Jonathan David Waldern
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Patent number: 8638504Abstract: Apparatus, methods, and systems provide emitting and negatively-refractive focusing of electromagnetic energy. In some approaches the negatively-refractive focusing includes negatively-refractive focusing from an interior field region with an axial magnification substantially greater than one. In some approaches the negatively-refractive focusing includes negatively-refractive focusing with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.Type: GrantFiled: August 7, 2008Date of Patent: January 28, 2014Inventors: Jeffrey A. Bowers, Roderick A. Hyde, Edward K. Y. Jung, John Brian Pendry, David Schurig, David R. Smith, Clarence T. Tegreene, Thomas A. Weaver, Charles Whitmer, Lowell L. Wood, Jr.
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Publication number: 20140016081Abstract: A light diffraction element comprising a transparent substrate and a first orientation layer that is formed on one surface of the substrate and includes anisotropic polymers and a first pattern of an orientation direction arranged periodically in a first direction along the primary plane of the substrate. The first pattern includes three or more small regions that are arranged in the first direction and in which the orientation direction of the polymers included in the first orientation layer are different from each other, and generates diffracted light as a result of interference between light passed respectively through the three or more small regions.Type: ApplicationFiled: September 20, 2013Publication date: January 16, 2014Applicant: ARISAWA MFG. CO., LTD.Inventors: Yuichi KAKUBARI, Yasuaki UMEZAWA, Kenichi WATABE
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Patent number: 8622557Abstract: A Micromirror Array Lens with self-tilted micromirrors comprising a plurality of self-tilted micromirrors and configured to form a designed optical surface profile by self-tilted micromirrors. Each self-tilted micromirror comprises a substrate, at least one stiction plate configured to be attracted to the substrate by adhesion force, a micromirror plate having a reflective surface, coupled to the stiction plate elastically and configured to have a required motion when the stiction plate is attracted to the substrate, and at least one pivot structure disposed between the substrate and the micromirror plate and configured to provide a tilting point or area for the motion of the micromirror plate. The designed optical surface profile determines the required motion of the micromirror plate and a surface profile shape memory is built in the structure of the micro-mechanical elements of the self-tilted micromirrors so that each micromirror plate has the required motion.Type: GrantFiled: May 20, 2008Date of Patent: January 7, 2014Assignees: Stereo Display, Inc., Angstrom Inc.Inventors: Gyoung Il Cho, Jin Young Sohn, Hye Young Kim, Cheong Soo Seo
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Publication number: 20130321920Abstract: An imaging lens includes, from the object side to the image side, an aperture stop, a first lens with positive refractive power having a convex object-side surface near an optical axis, a second lens with positive refractive power having a convex image-side surface near the axis, a third lens with positive refractive power having a convex image-side surface near the axis, and a fourth lens with negative refractive power having a concave image-side surface near the axis, wherein all lens surfaces are aspheric, all lenses are made of plastic material, a diffractive optical surface is formed on at least one of the lens surfaces from the first lens image-side surface to the second lens image-side surface, and at least one of the three positive lenses satisfies expression (1): 1.58<Ndi??(1) where Ndi: refractive index of the i-th positive lens at d-ray.Type: ApplicationFiled: May 20, 2013Publication date: December 5, 2013Applicant: KANTATSU CO., LTD.Inventors: Hisanori Suzuki, Yukio Sekine
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Publication number: 20130314789Abstract: A first optical arrangement is configured to couple into an apparatus a first component of a light beam having a wavelength within a first spectral range; a second optical arrangement configured to couple a second component of the light beam having a wavelength within a different second spectral range; a third optical arrangement configured to expand the first component in a first dimension to create an expanded first component; a fourth optical arrangement configured to expand, in a second dimension, the expanded first component to create a further expanded first component, and to output the further expanded first component; a fifth optical arrangement configured to expand the second component in the second dimension to create an expanded second component; and a sixth optical arrangement configured to expand, in the first dimension, the expanded second component to create a further expanded second component, and to output the further expanded second component.Type: ApplicationFiled: March 4, 2010Publication date: November 28, 2013Applicant: NOKIA CORPORATIONInventor: Pasi Saarikko
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Publication number: 20130301131Abstract: A security Device comprises a zero order diffractive microstructure (5) buried within a substrate (3). One or more further optical structures, such as microlenses (1), may be formed on a surface (2) of the substrate (3). The further optical structures modify the optical characteristics of the zero order diffractive microstructure (5). Various alternatives or additional optical structures and methods of producing them are described in additional embodiments.Type: ApplicationFiled: May 13, 2013Publication date: November 14, 2013Applicant: CSEM Centre Suisse d Electronique et de Microtechnique S.A.Inventors: Marc Schnieper, Alexander Stuck, Harald Walter
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Patent number: 8553329Abstract: A monolithic or hybrid integrated optical information processor employing a plurality of controllable optical transfer functions at fractional Fourier planes between two optical imaging elements is described. The arrangement can be used to realize or closely approximate arbitrary non-positive-definite transfer functions of spatially-varying amplitude and phase. In various implementations, one or both of the optical imaging elements can comprise a lens or graded-index material. In some implementations, at least a portion of the arrangement is implemented in the form of a stack. Graded index material may lie between consecutive light modulating array elements. The controllable plurality of optical transfer functions are employed to create a controllable optical processor which can be used for image filtering and optical computations using complex-valued optical signal arithmetic. An image sensor may be included to transform the processed image into electrical output.Type: GrantFiled: April 18, 2012Date of Patent: October 8, 2013Inventor: Lester F. Ludwig
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Publication number: 20130243693Abstract: Disclosed herein are methods of preparing silk particles having at least one optical property, e.g., reflectivity, diffraction, refraction, absorption, optical-gain, fluorescence, and light scattering, and compositions resulted therefrom. The compositions and methods of the invention can be utilized in various applications, e.g., medical applications, cosmetics, sunscreen and food additives.Type: ApplicationFiled: June 17, 2011Publication date: September 19, 2013Applicant: TUFTS UNIVERSITYInventors: Fiorenzo Omenetto, David Kaplan
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Patent number: 8531783Abstract: An optical processor is presented for applying optical processing to a light field passing through a predetermined imaging lens unit. The optical processor comprises a pattern in the form of spaced apart regions of different optical properties. The pattern is configured to define a phase coder, and a dispersion profile coder. The phase coder affects profiles of Through Focus Modulation Transfer Function (TFMTF) for different wavelength components of the light field in accordance with a predetermined profile of an extended depth of focusing to be obtained by the imaging lens unit. The dispersion profile coder is configured in accordance with the imaging lens unit and the predetermined profile of the extended depth of focusing to provide a predetermined overlapping between said TFMTF profiles within said predetermined profile of the extended depth of focusing.Type: GrantFiled: May 17, 2010Date of Patent: September 10, 2013Assignee: Xceed Imaging Ltd.Inventors: Zeev Zalevsky, Alex Zlotnik, Ido Raveh
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Patent number: 8531782Abstract: Apparatus, methods, and systems provide emitting, field-adjusting, and focusing of electromagnetic energy. In some approaches the field-adjusting includes providing an extended depth of field greater than a nominal depth of field. In some approaches the field-adjusting includes field-adjusting with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.Type: GrantFiled: June 18, 2008Date of Patent: September 10, 2013Inventors: Jeffrey A. Bowers, Roderick A. Hyde, Edward K. Y. Jung, John Brian Pendry, David Schurig, David R. Smith, Clarence T. Tegreene, Thomas A. Weaver, Charles Whitmer, Lowell L. Wood, Jr.
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Publication number: 20130209031Abstract: A multicast optical switch uses a diffractive bulk optical element, which splits at least one input optical beam into sub-beams, which freely propagate in a medium towards an array of directors, such as MEMS switches, for directing the sub-beams to output ports. Freely propagating optical beams can cross each other without introducing mutual optical loss. The amount of crosstalk is limited by scattering in the optical medium, which can be made virtually non-existent. Therefore, the number of the crossover connections, and consequently the number of inputs and outputs of a multicast optical switch, can be increased substantially without a loss or a crosstalk penalty.Type: ApplicationFiled: July 26, 2012Publication date: August 15, 2013Inventors: Sheldon McLaughlin, Peter David Roorda, Paul Colbourne, Barrie Keyworth
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Publication number: 20130208273Abstract: Methods and apparatus for combining or separating spectral components by means of a polychromat. A polychromat is employed to combine a plurality of beams, each derived from a separate source, into a single output beam, thereby providing for definition of one or more of the intensity, color, color uniformity, divergence angle, degree of collimation, polarization, focus, or beam waist of the output beam. The combination of sources and polychromat may serve as an enhanced-privacy display and to multiplex signals of multiple spectral components. In other embodiments of the invention, a polychromat serves to disperse spectral components for spectroscopic or de-multiplexing applications.Type: ApplicationFiled: September 16, 2011Publication date: August 15, 2013Applicants: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, UNIVERSITY OF UTAH RESEARCH FOUNDATIONInventors: Jose Dominguez-Caballero, Rajesh Menon
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Patent number: 8510091Abstract: Disclosed are domain-decomposition approaches to simulations of electromagnetic fields may that, in various embodiments, use second-order Robin transmission conditions at subdomain boundaries.Type: GrantFiled: September 9, 2010Date of Patent: August 13, 2013Assignee: SAS IP, Inc.Inventors: Kezhong Zhao, Din-Kow Sun
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Publication number: 20130194667Abstract: By suitably correcting a secondary spectrum, a clear, bright optical image is obtained. Provided is a rigid-scope optical system including: an objective optical system; and at least one relay optical systems that are formed of positive front groups, middle groups, and back groups in this order from an entrance side and that reimage an optical image imaged at imaging planes at the entrance side onto imaging planes at an exit side, wherein axial chromatic aberration between two wavelengths is corrected by an optical system other than the diffractive optical element, and axial chromatic aberration between the two wavelengths and another wavelength is corrected by the diffractive optical element.Type: ApplicationFiled: February 12, 2013Publication date: August 1, 2013Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventor: Olympus Medical Systems Corp.
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Patent number: 8493669Abstract: Apparatus, methods, and systems provide focusing, focus-adjusting, and sensing. In some approaches the focus-adjusting includes providing an extended depth of focus greater than a nominal depth of focus. In some approaches the focus-adjusting includes focus-adjusting with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.Type: GrantFiled: May 30, 2008Date of Patent: July 23, 2013Inventors: Jeffrey A. Bowers, Roderick A. Hyde, Edward K. Y. Jung, John Brian Pendry, David Schurig, David R. Smith, Clarence T. Tegreene, Thomas A. Weaver, Charles Whitmer, Lowell L. Wood, Jr.
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Objective lens, optical pickup apparatus using the same, and method for manufacturing objective lens
Patent number: 8488434Abstract: Provided is an objective lens manufactured well by using a mold and an optical pickup apparatus including the same. The objective lens of the present invention includes a first region that focuses laser beams of a BD, DVD, and CD standards, a second region that focuses the laser beams of the DVD and CD standards, and a third region that focuses the laser beams of the BD and the DVD standards are provided in this order from a center portion of the objective lens. A first annular zone step provided in the first region has a step amount larger than step amounts of annular zone steps provided in other regions.Type: GrantFiled: January 27, 2012Date of Patent: July 16, 2013Assignees: Sanyo Electric Co., Ltd, Sanyo Optec Design Co., LtdInventor: Mitsuru Ito -
Patent number: 8488646Abstract: Enhanced reflectivity High-Contrast Gratings are described which operate in different medium. An HCG is described with a deep/buried metallization layer separated at a distance of least three to four grating thicknesses from the grating. Reflective bandwidth of the HCG is substantially increased, such as by a factor or five, by inclusion of the deep/buried metallization layer. An HCG is described which provides high reflectivity, even when embedded into materials of a moderate to high index of refraction, such as semiconductor material. Vertical cavity surface emitting laser embodiments are described which utilize these reflectivity enhancements, and preferably utilize HCG reflectors for top and/or bottom mirrors.Type: GrantFiled: August 23, 2012Date of Patent: July 16, 2013Assignee: The Regents of the University of CaliforniaInventors: Connie Chang-Hasnain, Christopher Chase, Igor Karagodsy
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Patent number: 8488030Abstract: To enable an imaging apparatus to achieve high resolution and sufficient color reproducibility. A diffraction grating 1 is provided on the incident light side of a spectral image sensor 10, the diffraction grating 1 including scatterers such as scatterers 3, slits 5, and scatterers 7 which are disposed in that order. An electromagnetic wave is scattered by the scatterers to produce diffracted waves, and by using the fact that interference patterns between the diffracted waves change with wavelengths, signals are detected for respective wavelengths by photoelectric conversion elements 12B, 12G, and 12R in each photodiode group 12.Type: GrantFiled: August 25, 2005Date of Patent: July 16, 2013Assignee: Sony CorporationInventors: Atsushi Toda, Hirofumi Sumi
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Publication number: 20130176622Abstract: An optical imaging system includes a first diffractive optical element that receives a multi-wavelength beam of light and separates the received beam of light into diffractive orders. The optical imaging system also includes a second diffractive optical element that includes panels displaced along the second diffractive element in at least one direction, where each panel is positioned to receive and pass the multi-wavelength beam of one of the diffractive orders. A refractive optical element is positioned to receive multi-wavelength beams of the diffractive orders that pass through the second diffractive element, and an optical lens that receives the multi-wavelength beams of the diffractive orders that pass through the refractive element and focuses each of the multi-wavelength beams of the diffractive orders to a different location on an image plane at the same time.Type: ApplicationFiled: January 11, 2013Publication date: July 11, 2013Applicant: HOWARD HUGHES MEDICAL INSTITUTEInventor: HOWARD HUGHES MEDICAL INSTITUTE
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Publication number: 20130176564Abstract: A dispersive element is disclosed which is designed to receive incident light (1) and disperse the incident light (1) into multiple spatially separated wavelengths of light. The dispersive body (DB) comprises a collimation cavity (COLL) to collimate the incident light (1), at least two optical interfaces (PRIS) to receive and disperse the collimated light (2) and a collection cavity (CLCT) to collect the dispersed light (3) from the at least two dispersive interfaces (op1, op2) and to focus the collected light (4).Type: ApplicationFiled: January 9, 2013Publication date: July 11, 2013Applicant: ams AGInventor: ams AG
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Publication number: 20130163086Abstract: A photorefractive device (100) and method of manufacture are disclosed. The device (100) comprises a layered structure in which one or more polymer layers (110) are interposed between a photorefractive material (106) and at least one transparent electrode layer (104). One or more electrolytes are dispersed into the one or more polymer layers (110). When a bias is applied to the device (100), the device (100) exhibits an increase in signal efficiency compared to a similar device without electrolyte. Both grating decay time and grating response time are greatly reduced by dispersing electrolytes into one or more polymer layers in the photorefractive device. The grating decay time can be adjusted by dispersing different kinds of the electrolytes and/or different concentration of the electrolytes, which can be fitted into all kinds of applications with different requirements for grating response and decay time.Type: ApplicationFiled: August 31, 2011Publication date: June 27, 2013Applicant: NITTO DENKO CORPORATIONInventors: Tao Gu, Weiping Lin, Wan-Yun Hsieh, Michiharu Yamamoto
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Publication number: 20130154251Abstract: A security element, security device and method of forming a security device wherein the security element includes focusing elements, a first group of image elements, and a second group of image elements, each image element being located in an object plane to be viewable through a focusing element, and being located a distance from the focusing element such that the focal point width of the focusing element in the object plane is substantially equal to the size of the image element or differs from the size of the image element by a predetermined amount.Type: ApplicationFiled: August 26, 2011Publication date: June 20, 2013Applicant: SECURENCY INTERNATIONAL PTY LTDInventor: Karlo Ivan Jolic
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Publication number: 20130155512Abstract: An optical arrangement includes an actuatable optical element and a compensating optical element. The actuatable optical element is provided to receive an optical beam having a plurality of spatially separated wavelength components and diffract the plurality of wavelength components in a wavelength dependent manner. The compensating optical element directs the optical beam to the actuatable optical element. The compensating optical element compensates for the wavelength dependent manner in which the wavelength components are diffracted by the actuatable optical element.Type: ApplicationFiled: December 14, 2011Publication date: June 20, 2013Applicant: NISTICA, INC.Inventors: Mitchell E. Haller, Jefferson L. Wagener
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Publication number: 20130148202Abstract: A microscope objective lens includes, in order from an object side, a first lens group having positive refractive power, a second lens group having positive refractive power, and a third lens group having negative refractive power, and is configured such that the first lens group includes, on the most object side, a positive meniscus lens whose concave surface is directed to the object side, such that the second lens group includes a diffractive optical element having positive refractive power, and such that the diffractive optical element is arranged at a position closer to the image than a portion at which the diameter of a light flux passing through the first lens group and the second lens group is the largest.Type: ApplicationFiled: February 6, 2013Publication date: June 13, 2013Applicant: NIKON CORPORATIONInventor: NIKON CORPORATION
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Publication number: 20130135739Abstract: Provided is a microscope objective lens that sufficiently corrects on-axis and off-axis chromatic aberrations and that has a long working distance. A microscope objective lens OL includes, in order from an object side, a first lens group G1 with positive refractive power and a second lens group G2 with negative refractive power. The first lens group G1 of the microscope objective lens OL includes a diffractive optical element GD including a diffractive optical surface D, and the diffractive optical element GD is arranged at a position closer to the image than a section where a diameter of a light flux passing through the first lens group G1 is the largest.Type: ApplicationFiled: December 10, 2012Publication date: May 30, 2013Applicant: NIKON CORPORATIONInventor: NIKON CORPORATION
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Publication number: 20130136305Abstract: Apparatus (20) for 3D mapping of an object (28) includes an illumination assembly (30), including a coherent light source (32) and a diffuser (33), which are arranged to project a primary speckle pattern on the object. A single image capture assembly (38) is arranged to capture images of the primary speckle pattern on the object from a single, fixed location and angle relative to the illumination assembly. A processor (24) is coupled to process the images of the primary speckle pattern captured at the single, fixed angle so as to derive a 3D map of the object.Type: ApplicationFiled: January 24, 2013Publication date: May 30, 2013Applicant: PRIMESENSE LTD.Inventor: PRIMESENSE LTD.
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Publication number: 20130120841Abstract: Optical apparatus includes first and second diffractive optical elements (DOEs) arranged in series to diffract an input beam of radiation. The first DOE is configured to apply to the input beam a pattern with a specified divergence angle, while the second DOE is configured to split the input beam into a matrix of output beams with a specified fan-out angle. The divergence and fan-out angles are chosen so as to project the radiation onto a region in space in multiple adjacent instances of the pattern.Type: ApplicationFiled: January 6, 2013Publication date: May 16, 2013Applicant: PRIMESENSE LTD.Inventor: PRIMESENSE LTD.
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Patent number: 8441900Abstract: Provided is an objective lens that allows securing of a long working distance for a laser beam with a long wavelength and has a predetermined thickness or larger, and an optical pickup apparatus including the objective lens. In an objective lens of the present invention, a first region that focuses laser beams of a BD, DVD, and CD standards, a second region that focuses the laser beams of the DVD and CD standards, and a third region that focuses the laser beams of the BD and the DVD standards are provided in this order from a center portion of the objective lens. An optical super resolution with the laser beam of the BD standard is achieved by preventing a portion of the laser beam of the BD standard transmitted through the second region from contributing to spot formation.Type: GrantFiled: January 17, 2012Date of Patent: May 14, 2013Assignees: SANYO Electric Co., Ltd., SANYO Optec Design Co., Ltd.Inventor: Mitsuru Ito
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Patent number: 8441726Abstract: Light from an optical fiber is incident on a frequency dispersion element. The frequency dispersion element disperses the incident light into light beams in different directions according to their frequencies and directs the dispersed light beams to a lens. The lens develops the incident light beams over an xy plane according to their frequencies in a strip-like form. A frequency selective element has pixels arranged in a frequency dispersion direction and brings pixels located at positions corresponding to the frequency to be selected into a reflective state. A light beam selected by the frequency selective element is emitted from an optical fiber through the same path. By changing reflection characteristics of the frequency selective element according to each pixel, optical filter characteristics can be desirably changed so as to achieve change of passband width and frequency shift.Type: GrantFiled: December 29, 2010Date of Patent: May 14, 2013Assignee: Santec CorporationInventor: Yasuki Sakurai
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Patent number: 8424111Abstract: Provided is a scanning near-field optical microscope capable of obtaining, in a highly sensitive manner, optical information having a spatial frequency higher than a spatial frequency corresponding to a wavelength of irradiation light. A scanning near-field optical microscope 100 according to the present invention includes: a light irradiating part 102 for emitting illumination light toward a sample 107; a light receiving part 112 for receiving light; a microstructure for generating or selectively transmitting near-field light, the microstructure being disposed on at least one of an emission side of the light irradiating part 102 and an incident side of the light receiving part 112; and an ultrahigh-wavenumber transmitting medium 108 for transmitting near-field light, the ultrahigh-wavenumber transmitting medium exhibiting anisotropy in permittivity or permeability.Type: GrantFiled: June 23, 2011Date of Patent: April 16, 2013Assignees: Olympus Corporation, The University of TokyoInventors: Koichi Karaki, Kimihiko Nishioka, Yasuo Sasaki, Takuya Tsukagoshi, Yoshiharu Ajiki, Isao Shimoyama, Kiyoshi Matsumoto, Tetsuro Kan, Yusuke Takei, Kentaro Noda
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Publication number: 20130083397Abstract: Integrated multiple optical elements may be formed by bonding substrates containing such optical elements together or by providing optical elements on either side of the wafer substrate. The wafer is subsequently diced to obtain the individual units themselves. The optical elements may be formed lithographically, directly, or using a lithographically generated master to emboss the elements. Alignment features facilitate the efficient production of such integrated multiple optical elements, as well as post creation processing thereof on the wafer level.Type: ApplicationFiled: November 27, 2012Publication date: April 4, 2013Applicant: DigitalOptics Corporation EastInventors: Brian HARDEN, Alan KATHMAN, Michael FELDMAN
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Publication number: 20130077169Abstract: The invention includes a radiation diffracting member having a crystalline structure comprising an ordered periodic array of hollow particles. The radiation diffracting member also includes a matrix material in which the array of particles is received.Type: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: PPG Industries Ohio, Inc.Inventors: Shan Cheng, Noel R. Vanier, Wei Wang, Xiangling Xu
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Publication number: 20130066150Abstract: A zoom lens module and an endoscope system including the zoom lens module are disclosed. The zoom lens module includes: a first liquid lens; a second liquid which is disposed separated from the first liquid lens; and an aperture disposed between the first and second liquid lenses. A respective focal distance of each of the first liquid lens and the second liquid lens is adjustable based on a change of at least one of the respective curvature thereof and the respective thickness thereof.Type: ApplicationFiled: June 25, 2012Publication date: March 14, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung-wan LEE, Yeon-ho KIM, Min-seog CHOI, Woon-bae KIM
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Publication number: 20130063797Abstract: An optical LOS toggle uses two refractive optical elements located in the afocal space of an optical sensor. Optical surfaces of the two elements are shaped appropriately to work in combination with lateral displacements of the two elements such that the LOS angle is shifted. For a prescribed, discrete LOS shift, the optical image quality of the toggle module is corrected by a combination of aspheric shapes and diffractive surfaces on the optical surfaces of the two elements. To maintain performance along any radial direction and simplify fabrication, these aspheric or spheric shapes and diffractive surfaces should be rotationally symmetrical. Image quality is further improved through proper selection of the optical materials used to construct the optical elements.Type: ApplicationFiled: September 7, 2012Publication date: March 14, 2013Applicant: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Stephen F. Sagan, Gerard M. Perron
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Publication number: 20130064057Abstract: A disclosed objective lens includes: a lens having an entrance surface and an emission surface; and an anti-reflection coat formed on the emission surface, wherein a transmittance T1—0 [%] of the anti-reflection coat when an incident angle of a first laser beam having a first wavelength ?1 (390 nm??1?430 nm) is 0°, and the transmittance T1—40 [%] of the anti-reflection coat when the incident angle of the first laser beam is 40° satisfy 0.95?T1—0/T1—40?1.05, and a transmittance T2—0 [%] of the anti-reflection coat when an incident angle of a second laser beam having a second wavelength ?2 (630 nm??2?680 nm) is 0° and a transmittance T2—40 [%] of the anti-reflection coat when the incident angle of the second laser beam is 40° satisfy 0.85?T2—0/T2—40?0.97.Type: ApplicationFiled: May 31, 2011Publication date: March 14, 2013Inventors: Fumitomo Yamasaki, Hiroshi Shiroiwa, Yoshiaki Komma, Junichi Asada, Osamu Kajino, Noriaki Terahara, Toshiyasu Tanaka
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Publication number: 20130051209Abstract: An objective lens for optical pickup and an optical pickup apparatus having the same are provided. The objective lens for optical pickup includes a light source side lens surface and a disc side lens surface. The light source side lens surface and the disc side lens surface each include an effective region disposed at a central region of the objective lens and a non-effective region disposed outside the effective region. An optical path changing element, disposed in the non-effective region of at least one of the light source side lens surface and the disc side lens surface, changes a path of light incident thereon.Type: ApplicationFiled: August 30, 2012Publication date: February 28, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seong-su PARK, Soo-han PARK, Woo-chang CHUN
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Patent number: 8382281Abstract: The present invention provides improved ophthalmic lenses and methods for their design and use. Monofocal and multifocal diffractive ophthalmic lenses having reduced light scatter and/or improved light energy distribution properties are provided. These properties are provided by the diffractive profiles of the invention, often having subtly shaped echelettes with appropriately curving profiles. Light scatter may be generated by the sharp corners associated with vertical steps between adjacent conventional diffractive echelettes. Smooth diffractive profiles of the invention reduce light scatter. Light energy directed towards non-viewing diffractive orders may have a unwanted effects on vision quality. Diffractive profiles of the invention may limit the light energy in certain, selected orders, thereby improving viewing quality and mitigating unwanted effects such as dysphotopsia.Type: GrantFiled: January 14, 2011Date of Patent: February 26, 2013Assignee: AMO Groningen B.V.Inventor: Henk A. Weeber
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Publication number: 20130044375Abstract: A security Device comprises a zero order diffractive microstructure (5) buried within a substrate (3). One or more further optical structures, such as microlenses (1), may be formed on a surface (2) of the substrate (3). The further optical structures modify the optical characteristics of the zero order diffractive microstructure (5). Various alternatives or additional optical structures and methods of producing them are described in additional embodiments.Type: ApplicationFiled: August 21, 2012Publication date: February 21, 2013Applicant: CSEM Centre Suisse d Electronique et de Microtechnique S.A.Inventors: Marc Schnieper, Alexander Stuck, Harald Walter
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Publication number: 20130046381Abstract: An imaging lens structure and method of imaging are presented. The imaging lens structure comprising a lens region defining an effective aperture of the lens structure. The lens region comprises an arrangement of lens zones distributed within the lens region and comprising zones of at least two different optical functions differently affecting light passing therethrough. The zones of at least two different optical functions are arranged in an interlaced fashion along said lens region corresponding to a surface relief of the lens region such that adjacent lens zones of different optical functions are spaced apart from one another along an optical axis of the lens structure a distance larger than a coherence length of light at least one spectral range for which said lens structure is designed.Type: ApplicationFiled: February 9, 2011Publication date: February 21, 2013Inventors: Zeev Zalevsky, Alex Zlotnik, Shai Ben-Yaish, Ofer Limon, Ido Raveh
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Publication number: 20130033676Abstract: An optical processor is presented for applying optical processing to a light field passing through a predetermined imaging lens unit. The optical processor comprises a pattern in the form of spaced apart regions of different optical properties. The pattern is configured to define a phase coder, and a dispersion profile coder. The phase coder affects profiles of Through Focus Modulation Transfer Function (TFMTF) for different wavelength components of the light field in accordance with a predetermined profile of an extended depth of focusing to be obtained by the imaging lens unit. The dispersion profile coder is configured in accordance with the imaging lens unit and the predetermined profile of the extended depth of focusing to provide a predetermined overlapping between said TFMTF profiles within said predetermined profile of the extended depth of focusing.Type: ApplicationFiled: February 9, 2011Publication date: February 7, 2013Inventors: Zeev Zalevsky, Alex Zlotnik, Ido Raveh, Shai Ben-Yaish, Ofer Limon, Oren Yehezkel, Karen Lahav
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Publication number: 20130021513Abstract: A photographic optical system includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power configured to move in an optical axis direction to perform focusing, and a third lens unit having positive or negative refractive power, wherein the position of an optical element (A) satisfies a predetermined condition.Type: ApplicationFiled: July 16, 2012Publication date: January 24, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Kaoru Eguchi
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Patent number: 8355204Abstract: The present invention provides a highly efficient light-extraction layer and an organic electroluminescence element excellent in light-extraction efficiency. The light-extraction layer of the present invention comprises a reflecting layer and a three-dimensional diffraction layer formed thereon. The diffraction layer comprises fine particles having a variation coefficient of the particle diameter of 10% or less and of a matrix having a refractive index different from that of the fine particles. The particles have a volume fraction of 50% or more based on the volume of the diffraction layer. The particles are arranged to form first areas having short-distance periodicity, and the first areas are disposed and adjacent to each other in random directions to form second areas. The organic electroluminescence element of the present invention comprises the above light-extraction layer.Type: GrantFiled: December 31, 2008Date of Patent: January 15, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Tsutomu Nakanishi, Akira Fujimoto, Shigeru Matake, Koji Asakawa
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Publication number: 20130010363Abstract: According to an aspect of the present invention, a spectral purity filter includes an aperture, the aperture being arranged to diffract a first wavelength of radiation and to allow at least a portion of a second wavelength of radiation to be transmitted through the aperture, the second wavelength of radiation being shorter than the first wavelength of radiation, wherein the aperture has a diameter greater than 20 ?m.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: ASML Netherlands B.V.Inventors: Wouter Anthon Soer, Vadim Yevgenyevich Banine, Maarten Marinus Johannes Wilhelmus Van Herpen, Andrey Mikhailovich Yakunin, Martin Jacobus Johan Jak
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Publication number: 20130010362Abstract: A diffractive optical element includes a first optical member, a second optical member, and a third optical member stacked on each other in this order in an optical axis direction. A diffractive surface including a plurality of raised parts is formed at an interface between the first and second optical members. The first and third optical members contact each other at part other than the raised parts.Type: ApplicationFiled: July 2, 2012Publication date: January 10, 2013Applicant: PANASONIC CORPORATIONInventors: Tomokazu TOKUNAGA, Toshiaki TAKANO, Koji FUJII, Tetsuya SUZUKI
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Publication number: 20120320460Abstract: The specification and drawings present a new apparatus and method for providing color separation in an exit pupil expander system that uses a plurality of diffractive elements for expanding the exit pupil of a display in an electronic device for viewing by introducing a selectively absorbing area or areas in the exit pupil expander.Type: ApplicationFiled: August 24, 2012Publication date: December 20, 2012Applicant: NOKIA CORPORATIONInventor: Tapani Levola
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Patent number: 8319821Abstract: In a first exemplary embodiment of the present invention, an automated, computerized method is provided for determining an illumination flux condition in a scene. The method comprises the steps of generating and storing a sequence of images of the scene, each one of the sequence of images comprising an array of pixels and corresponding to the scene photographed in a preselected polarization direction, different from the polarization direction of other ones of the sequence of images, determining a polarization sequence vector for at least one pixel in the array, as a function of color information for the pixel in the array, among the sequence of images; and utilizing the polarization sequence vector to determine one of a shadowed and lit illumination condition for the at least one pixel.Type: GrantFiled: June 5, 2007Date of Patent: November 27, 2012Assignee: Tandent Vision Science, Inc.Inventors: Kristin Jean Dana, Richard Mark Friedhoff, Bruce Allen Maxwell, Steven Joseph Bushell, Casey Arthur Smith
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Patent number: 8306376Abstract: There is provided an optical multiplexer including: a substrate having a plurality of beam transmitting portions; and diffraction gratings diffracting beams irradiated to the beam transmitting portions at different angles, each diffraction grating being formed in the corresponding beam transmitting portion. Accordingly, it is possible to reduce an alignment error and manufacturing cost and to reduce the entire size of a recording apparatus or a reproducing apparatus.Type: GrantFiled: July 12, 2006Date of Patent: November 6, 2012Assignee: Wi-LAN Inc.Inventor: Kun-Yul Kim
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Patent number: 8304796Abstract: Provided is a light-emitting apparatus in which light extraction efficiency of a light-emitting device is improved and viewing angle dependency of an emission color is reduced. The light-emitting apparatus includes a cavity structure and a periodic structure. When guided-wave light is diffracted by the periodic structure in a direction that forms an angle which is larger than 90° and smaller than 180° relative to a guided-wave direction of an optical waveguide in the cavity structure, a wavelength of the diffracted light becomes longer as the diffraction angle increases.Type: GrantFiled: November 13, 2008Date of Patent: November 6, 2012Assignee: Canon Kabushiki KaishaInventor: Koichi Fukuda
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Publication number: 20120274909Abstract: A beam combiner is for a multicolor laser display having an optical light source which has at least two semiconductor lasers, in which the beam combiner has a lens arranged in a beam path which is formed by beams emitted from the at least two semiconductor lasers, the lens is a diffractive optical element acting as the lens, the diffractive optical element has a plurality of optical axes, which are offset in a lateral direction with respect to one another, for various wavelengths of the semiconductor lasers, and the plurality of optical axes are offset in the lateral direction relative to one another such that an optical axis for one wavelength is in each case collinear with an emission direction of the semiconductor laser which emits this wavelength.Type: ApplicationFiled: April 23, 2012Publication date: November 1, 2012Applicant: OSRAM Opto Semiconductors GmbHInventors: Roland SCHULZ, Thomas SCHWARZ