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公开(公告)号：US20240288684A1
公开(公告)日：2024-08-29
申请号：US18587339
申请日：2024-02-26
发明人： Wai Sze Tiffany Lam , Wanli Chi , Jian Xu
CPC分类号： G02B26/106 , G02B5/18 , G02B27/0172 , G02B27/0944 , G02B27/44 , G06T19/006
摘要： An apparatus of the subject technology includes a light source to generate a light beam, a first grating illuminated by the light beam, and a second grating optically coupled to the first grating. The first grating performs a first diffraction to expand the light beam in a first dimension to form a first beam. The second grating performs a second diffraction to expand the first beam in a second dimension to provide a backlight for a display device.
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公开(公告)号：US11846779B2
公开(公告)日：2023-12-19
申请号：US17495750
申请日：2021-10-06
CPC分类号： G02B27/0172 , G02B5/1828 , G02B5/1842 , G02B5/3083 , G02B26/106 , G02B27/0093 , G02F1/29 , G02B2027/0123 , G02B2027/0178 , G02F1/294 , G02F2203/07
摘要： An optical assembly includes a plurality of successive optical stages that are configured to transmit light at a variable overall optical power by configuring one or more stages of the successive optical stages. A respective optical stage of the successive optical stages includes an active optical element that is configurable to be in a first state at a first time and a second state at a second time that is distinct from the first time. The active optical element, in the first state, has a first respective optical power for light of a first polarization and a second respective optical power, that is different from the first respective optical power, for light of a second polarization that is orthogonal to the first polarization. The active optical element, in the second state, has a third optical power for light of the first polarization and light of the second polarization.
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公开(公告)号：US20180364154A1
公开(公告)日：2018-12-20
申请号：US15625899
申请日：2017-06-16
CPC分类号： G01N21/31 , A61B1/00096 , A61B1/00172 , A61B1/00186 , A61B1/063 , A61B1/0638 , A61B1/0646 , G01J3/0218 , G01J3/06 , G01J3/2823 , G01N2201/0633 , G01N2201/08 , G02B3/0087 , G02B6/00 , G02B23/2469 , G02B23/26 , G02B26/106 , G02B26/108
摘要： An apparatus for spectrally encoded endoscopy (SEE) comprising an illumination element, a detection light guiding element, a rotary element, and a two-dimensional sensor. The illumination element is configured to direct an illumination light beam towards a sample. The detection light guiding element is configured to collect a reflected light beam from the sample. At least one of the illumination element and the detection light guiding element is configured to spectrally dispersed the illumination light beam or the reflected light beam, respectively. The rotary element is configured to rotate or oscillate the reflected light beam. The reflected light beam is guided from the rotary element to the two-dimensional sensor.
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公开(公告)号：US20180259765A1
公开(公告)日：2018-09-13
申请号：US15454856
申请日：2017-03-09
申请人： Microvision, Inc.
发明人： Matthew Ellis , Jason B. Tauscher
CPC分类号： G02B26/0833 , B81B3/0083 , B81B2201/042 , B81B2203/058 , G02B26/085 , G02B26/0858 , G02B26/105 , G02B26/106 , H04N9/3129
摘要： The embodiments described herein provide scanners with a modular construction that includes a separately formed scan plate coupled to a microelectromechanical system (MEMS) flexure structure. Such modular scanners, when incorporated into laser scanning devices, reflect laser light into a pattern of scan lines. In general, the modular scanner includes a scan plate that is formed separately from the flexure structure. The scan plate and flexure structure each include coupling features that serve to couple the scan plate to the flexure structure. The flexure structure includes flexure arms that facilitate rotation of the scan plate to reflect laser light into a pattern of scan lines.
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公开(公告)号：US20180172433A1
公开(公告)日：2018-06-21
申请号：US15823604
申请日：2017-11-28
CPC分类号： G01B11/14 , G01D5/34723 , G01D5/38 , G02B26/106
摘要： An optical position-measuring device includes a measuring graduation having a measuring graduation period and a scanner movable relative to the measuring graduation. The scanner projects a light pattern having alternating bright and dark regions with a light pattern period onto the measuring graduation. The measuring graduation period differs from the light pattern period such that interaction of the light pattern with the measuring graduation produces a vernier pattern having bright regions and dark regions. The measuring graduation is a phase grating having a line-to-space ratio different from 1:1 and a phase shift between lines and spaces selected such that the zeroth diffraction order is suppressed. The position-measuring device is configured such that, at a position at which the zeroth diffraction order of a bright region is suppressed, a higher diffraction order is deflected and impinges on a detector array in a bright region of the vernier pattern.
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公开(公告)号：US20180113319A1
公开(公告)日：2018-04-26
申请号：US15566357
申请日：2015-08-20
发明人： Fukiko HIROSE , Keita MOCHIZUKI
CPC分类号： G02B27/0916 , G02B26/106 , G02B26/123 , G02B27/00 , G02B27/0103 , G02B27/09 , G02B27/0927 , G02B2027/0125
摘要： A beam scanning device includes a variable-wavelength laser that emits a laser beam, a plane-wave converting unit that converts the laser beam into a plane-wave laser beam, a light-intensity-distribution converting unit including a first light-intensity-distribution converting unit set to be obliquely tilted with respect to an emitting direction of the laser beam within a horizontal plane and a second light-intensity-distribution converting unit set to be obliquely tilted with respect to the emitting direction of the laser beam within a plane perpendicular to the horizontal plane and parallel to the emitting direction of the laser beam, the light-intensity-distribution converting unit converting a peak position of light intensity of the plane-wave laser beam according to a wavelength of the plane-wave laser beam, and a spherical-wave converting unit that converts the plane-wave laser beam, the peak position of the light intensity of which is converted, into a spherical-wave laser beam.
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公开(公告)号：US20180003805A1
公开(公告)日：2018-01-04
申请号：US15543011
申请日：2016-01-19
申请人： DigiLens, Inc.
CPC分类号： G01S7/4817 , G01S17/42 , G01S17/88 , G01S17/89 , G02B6/12002 , G02B6/34 , G02B26/0808 , G02B26/106 , G02B27/0093 , G02B2006/12138 , G06F3/013
摘要： A holographic waveguide LIDAR having a transmitter waveguide coupled to a beam deflector and a receiver waveguide coupled to a detector module. The transmitter waveguide contains an array of grating elements for diffracting a scanned laser beam into a predefined angular ranges. The receiver waveguide contains an array of grating elements for diffracting light reflected from external points within a predefined angular range towards the detector module.
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公开(公告)号：US09772504B2
公开(公告)日：2017-09-26
申请号：US15149831
申请日：2016-05-09
IPC分类号： G03B21/14 , H04N9/14 , G02B27/48 , G02B26/10 , G03B21/20 , H04N9/31 , G02B26/08 , H04N5/74 , G02B26/12
CPC分类号： G02B27/48 , G02B26/0808 , G02B26/0816 , G02B26/10 , G02B26/101 , G02B26/105 , G02B26/106 , G02B26/12 , G02B26/125 , G03B21/2033 , G03B21/2066 , G03B21/208 , H04N5/74 , H04N9/14 , H04N9/3129 , H04N9/3155 , H04N9/3161
摘要： To provide an illumination device and a projection type image display device that illuminate an area to be illuminated (image formation area) under conditions where speckle noise is less noticeable.An illumination device according to the present invention includes: a light source 11 that emits coherent light; an optical scanning section 15 that scans the coherent light emitted from the light source 11; and an optical path conversion system 21 configured to allow the coherent light scanned by the optical scanning section 15 to illuminate an area to be illuminated sequentially in an overlapping manner. An incident angle of the coherent light that enters respective points of the area to be illuminated changes with time.
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9.发明申请公开(公告)号：US20170242232A1
公开(公告)日：2017-08-24
申请号：US15518049
申请日：2015-10-15
申请人： INSTITUT NATIONAL DE LA SANTE ET LA RESCHERCHE MEDICALE (INSERM) , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) , ECOLE NORMALE SUPERIEURE
CPC分类号： G02B21/16 , G01N21/6458 , G02B21/0036 , G02B21/0076 , G02B26/101 , G02B26/106 , G02B2207/114 , G02F1/113 , G02F1/33 , G03H1/0005 , G03H2001/005
摘要： The present invention concerns a method for generating a pattern of light, this method comprising the following steps: a) emitting an input laser pulse (P1), b) deflecting the input laser pulse (P1) by a first deflector (22) to obtain a first laser pulse, c) deflecting the first laser pulse (P3) by a second deflector (24) to obtain a second laser pulse (P4), and d) focusing the pulse (P4) by an optical element characterized in that: —the first deflector (22) shapes the first laser pulse (P3) according to a first function, —the second deflector (24) shapes the second laser pulse (P4) according to a second function, and —the first function f(x) and the second function g(y) are computed and/or optimized to obtain the desired pattern of light.
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公开(公告)号：US09658322B2
公开(公告)日：2017-05-23
申请号：US14658044
申请日：2015-03-13
发明人： Robert A. Lewis
CPC分类号： G01S7/4813 , G01S7/4817 , G01S17/42 , G02B19/0028 , G02B19/0085 , G02B26/106 , G02B26/108
摘要： An optical scanner system comprises a housing, a detector contained within the housing configured to produce at least two resolvable azimuth fields-of-view relative to a center-axis of the housing, and an external scanner rotating relative to the center-axis of the housing, and switching between at least two elevations relative to a nominal optical axis of a receiver. Motion of the housing azimuthally results in the receiver producing a continuous coverage pattern at multiple elevations produced by the external scanner.
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