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1. 发明公开

US20240187109A1 AN OPTICAL DETECTOR 审中-公开
公开(公告)号：US20240187109A1
公开(公告)日：2024-06-06
申请号：US18284944
申请日：2022-04-05
申请人： SIGNIFY HOLDING B.V.
发明人： CHRISTOPH GERARD AUGUST HOELEN , LUDOVICUS JOHANNES LAMBERTUS HAENEN
IPC分类号： H04B10/69 , G02B3/08 , G02B13/14 , H04B10/116
CPC分类号： H04B10/691 , G02B3/08 , G02B13/14 , H04B10/116
摘要： This invention relates to an optical detector (100) that has enhanced sensitivity for detecting optical signals originating from larger incidence angles. The optical detector (100) may also be used for determining optical signals originating direction. The optical detector (100) comprises a photodetector (101) and a lens (103). The photodetector (101) has a center axis (102) that is lying in a center plane (001) perpendicular to a photodetector plane (002). The lens has a first lens segment (131) and a second lens segment (132) separated by the centerplane (001). The first lens segment (131) comprises a first light receiving surface (133) and a first light exit surface (135), and the first light exit surface (135) is facing the photodetector (101). The second lens segment (132) comprises a second light receiving surface (134) and a second light exit surface (136), and the second light exit surface (134) is facing the photodetector (101). The first light receiving surface (133) comprises a first convex surface with non-constant curvature, the first convex surface having a first minimum radius of curvature (051) at a first surface point. The second light receiving surface (134) comprises a second convex surface with non-constant curvature, the second convex surface having a second minimum radius of curvature (052) at a second surface point. The first angle (053) enclosed by the center axis (102) and a first line (055) is greater than zero degrees, where the first line (055) is normal to the first convex surface at the first surface point and extending up to the center axis (102). And a second angle (054) enclosed by the center axis (102) and a second line (056) is greater than zero degrees, where the second line (056) is normal to the second convex surface at the second surface point and extending up to the center axis (102).

2. 发明申请

US20190103921A1 OPTICAL RECEIVER WITH OPTICAL DEMULTIPLEXER 审中-公开
公开(公告)号：US20190103921A1
公开(公告)日：2019-04-04
申请号：US16023145
申请日：2018-06-29
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Sae-Kyoung KANG , Joon Young HUH , Joon Ki LEE , Jie Hyun LEE
IPC分类号： H04B10/69 , H04J14/02
CPC分类号： H04B10/691 , H04B10/675 , H04B10/693 , H04J14/02
摘要： An optical receiver includes: an optical demultiplexer to demultiplex an optical signal in which a plurality of wavelengths is multiplexed and divide the optical signal into optical signals corresponding to the plurality of wavelengths, respectively; a reflector to change a progress direction of the divided optical signals; an optical coupling lens including, in an array form, light transmission lenses through which the divided optical signals are transmitted, respectively; a plurality of photodetectors to mount on a photodiode (PD) substrate provided on the optical coupling lens, receive the divided optical signals that are transmitted through the light transmission lenses of the optical coupling lens, respectively, and convert the received optical signals to electrical signals; and a plurality of trans impedance amplifiers provided at desired intervals to electrically connect to the plurality of photodetectors through wire bonding and amplify the received plurality of electrical signals to be a desired magnitude.

3. 发明申请

US20190033698A1 SYSTEMS, DEVICES, AND METHODS FOR LASER PROJECTORS 审中-公开
公开(公告)号：US20190033698A1
公开(公告)日：2019-01-31
申请号：US16047857
申请日：2018-07-27
申请人： THALMIC LABS INC.
发明人： Kai Xu
IPC分类号： G03B21/20 , H01L25/16 , G02B27/10 , G02B27/01
CPC分类号： G03B21/2033 , G02B27/0101 , G02B27/017 , G02B27/1006 , G02B2027/0178 , G03B21/005 , G03B21/2086 , H01L25/167 , H01S5/0071 , H01S5/0264 , H01S5/0427 , H01S5/062 , H01S5/06825 , H01S5/06832 , H01S5/4012 , H01S5/4093 , H04B10/502 , H04B10/691 , H04N9/3155 , H04N9/3161 , H04N9/3194
摘要： Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

4. 发明申请

US20190033585A1 SYSTEMS, DEVICES, AND METHODS FOR LASER PROJECTORS 审中-公开
公开(公告)号：US20190033585A1
公开(公告)日：2019-01-31
申请号：US16047859
申请日：2018-07-27
申请人： THALMIC LABS INC.
发明人： Kai Xu
IPC分类号： G02B27/01 , G03B21/00 , G03B21/20 , H01S5/026
CPC分类号： G03B21/2033 , G02B27/0101 , G02B27/017 , G02B27/1006 , G02B2027/0178 , G03B21/005 , G03B21/2086 , H01L25/167 , H01S5/0071 , H01S5/0264 , H01S5/0427 , H01S5/062 , H01S5/06825 , H01S5/06832 , H01S5/4012 , H01S5/4093 , H04B10/502 , H04B10/691 , H04N9/3155 , H04N9/3161 , H04N9/3194
摘要： Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

5. 发明申请

US20180359030A1 CLOCK RECOVERY FOR A CODED LIGHT RECEIVER 审中-公开
公开(公告)号：US20180359030A1
公开(公告)日：2018-12-13
申请号：US15579861
申请日：2016-06-10
申请人： PHILIPS LIGHTING HOLDING B.V.
发明人： PETER HOEKSTRA , BENJAMIN JOHANNES VOS , CONSTANT PAUL MARIE JOZEF BAGGEN
IPC分类号： H04B10/116 , H04L7/00 , H04N5/235 , H04B10/69 , H05B37/02
CPC分类号： H04B10/116 , H04B10/691 , H04B10/6971 , H04L7/0012 , H04N5/2353 , H05B37/0272
摘要： An apparatus, method and program for receiving a coded light signal comprising a periodically repeating message repeating with a message period. A portion of the message is received in each of a plurality of frames captured by a rolling-shutter camera, with different portions being received in different frames. Using each of a discrete group of trial values of the message period, the respective trial value is used to reconstruct a respective first version of the message from the portions received in a first subset of said frames, and to reconstruct a respective second version of the message from the portions received in a second subset of said frames. For each of the trial values, there is generate a respective value of a measure of similarity between the respective reconstructed first and second versions of the message. An estimate of the message period is determined based on this.

6. 发明申请

US20180102442A1 MICROSTRUCTURE ENHANCED ABSORPTION PHOTOSENSITIVE DEVICES 审中-公开
公开(公告)号：US20180102442A1
公开(公告)日：2018-04-12
申请号：US15797821
申请日：2017-10-30
申请人： W&WSens, Devices Inc.
发明人： Shih-Yuan WANG , Shih-Ping WANG , M. Saif Islam
IPC分类号： H01L31/0236 , H04B10/80 , G02B1/00 , H04B10/69 , H04B10/40 , H04B10/25 , H01L31/18 , H01L31/107 , H01L31/103 , H01L31/09 , H01L31/0352 , H01L31/028 , H01L31/0232 , H01L31/02 , H01L27/146 , H01L27/144
CPC分类号： H01L31/02327 , G02B1/002 , G02B1/005 , H01L27/1443 , H01L27/1446 , H01L27/14625 , H01L31/02 , H01L31/02002 , H01L31/02016 , H01L31/0232 , H01L31/02325 , H01L31/0236 , H01L31/02363 , H01L31/028 , H01L31/035218 , H01L31/035281 , H01L31/09 , H01L31/103 , H01L31/107 , H01L31/1804 , H01L31/1808 , H04B10/25 , H04B10/40 , H04B10/691 , H04B10/6971 , H04B10/801 , Y02E10/547
摘要： Microstructure enhanced photodiodes and avalanche photodiodes are monolithically integrated with CMOS/BiCMOS circuitry such as transimpedance amplifiers. Microstructures, such as holes, can improve quantum efficiency in silicon and III-V materials and can also reduce avalanche voltages for avalanche photodiodes. Applications include optical communications within and between datacenters, telecommunications, LIDAR, and free space data communication.

7. 发明授权

US09929815B1 Adaptive communications focal plane array 有权
公开(公告)号：US09929815B1
公开(公告)日：2018-03-27
申请号：US15616532
申请日：2017-06-07
申请人： SUREFIRE LLC
发明人： John C. Bortz , Narkis Shatz
IPC分类号： H04B10/08 , H04B10/00 , H04B10/69 , H04B10/079 , H04B10/11 , H04B1/60 , H04B10/116 , G01C21/36 , G06K19/06 , H04J14/02 , G11B7/00
CPC分类号： H04B10/691 , G01C21/36 , G02F1/31 , G06K19/06 , G11B7/00 , H04B1/60 , H04B10/07953 , H04B10/11 , H04B10/116 , H04J14/02 , H04J14/022
摘要： Adaptive communications focal plane arrays that may be implemented in, e.g., a specially-configured camera that can be utilized to receive and/or process information in the form of optical beams are presented. A specialized focal plane array (FPA) having a plurality of optical detectors is utilized, where one or more optical detectors are suppressed such that data is not allowed to be output from the one or more suppressed optical detectors, and only a significantly smaller number or subset of optical detectors receiving optical beams are allowed to output data. In this way, the rate at which data is to be output by an adaptive communications FPA (ACFPA) can be significantly reduced.

8. 发明授权

US09917652B1 Adaptive communications focal plane array 有权
公开(公告)号：US09917652B1
公开(公告)日：2018-03-13
申请号：US15615819
申请日：2017-06-06
申请人： SUREFIRE LLC
发明人： John C. Bortz , Narkis Shatz
IPC分类号： H04B10/08 , H04B10/00 , H04B10/69 , H04B10/079 , H04B10/11 , G02F1/31 , H04B1/60 , H04B10/116
CPC分类号： H04B10/691 , G01C21/36 , G02F1/31 , G06K19/06 , G11B7/00 , H04B1/60 , H04B10/07953 , H04B10/11 , H04B10/116 , H04J14/02 , H04J14/022
摘要： Adaptive communications focal plane arrays that may be implemented in, e.g., a specially-configured camera that can be utilized to receive and/or process information in the form of optical beams are presented. A specialized focal plane array (FPA) having a plurality of optical detectors is utilized, where one or more optical detectors are suppressed such that data is not allowed to be output from the one or more suppressed optical detectors, and only a significantly smaller number or subset of optical detectors receiving optical beams are allowed to output data. In this way, the rate at which data is to be output by an adaptive communications FPA (ACFPA) can be significantly reduced.

9. 发明申请

US20170288771A1 APPARATUS AND METHOD FOR MEASURING FREQUENCY RESPONSE CHARACTERISTICS OF OPTICAL TRANSMITTER AND OPTICAL RECEIVER 审中-公开
公开(公告)号：US20170288771A1
公开(公告)日：2017-10-05
申请号：US15476123
申请日：2017-03-31
申请人： Fujitsu Limited
发明人： Cheng JU , Liang Dou , Zhenning Tao
IPC分类号： H04B10/079 , H04L27/26 , H04B10/548 , H04B10/69
CPC分类号： H04B10/0795 , H04B10/0731 , H04B10/548 , H04B10/691 , H04L27/2637 , H04L27/2697
摘要： An apparatus and method for measuring frequency response characteristics of an optical transmitter and an optical receiver where the apparatus includes: a generating unit configured to generate a driving signal for driving the modulator of the optical transmitter, which comprises at least two frequencies; and a calculating unit configured to respectively calculate the frequency response characteristics of the optical transmitter and the optical receiver according to output signal components in output signals of the optical receiver corresponding to at least two detection signal components of identical amplitudes and different frequencies in detection signals. The frequency response characteristics of the optical transmitter and the optical receiver may be obtained, the amplitude responses and phase responses in the frequency response characteristics may be respectively obtained, and the measurement results are accurate and reliable.

10. 发明申请

US20170222719A1 COMMUNICATION APPARATUS AND METHOD 审中-公开
公开(公告)号：US20170222719A1
公开(公告)日：2017-08-03
申请号：US15487640
申请日：2017-04-14
申请人： The University Court of the University of Edinburg
发明人： Harald Haas , Sinan Sinanovic , Dobroslav Tsonev
IPC分类号： H04B10/116
CPC分类号： H04B10/116 , H04B10/60 , H04B10/691
摘要： A transmission system for transmitting data as part of a communications system, the data comprising a plurality of data symbols or elements, the transmission system being configured to divide the data into at least a first data portion and a second data portion, wherein the first data portion is communicated by transmitting signals in selected carrier channels, wherein the transmission system is configured to encode at least one data symbol or element by selecting a relative order of at least one first carrier channel having a first operational state and at least one second carrier channel having a second operational state.

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