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公开(公告)号：US20240183707A1
公开(公告)日：2024-06-06
申请号：US18439265
申请日：2024-02-12
Applicant: Waymo LLC
CPC classification number: G01J1/0238 , G01J1/0411 , G01J1/0437 , G01J1/0488 , G01J1/44 , H04N25/00 , G01J2001/4446
Abstract: Methods, systems, and apparatus, for a stray-light testing station. In one aspect, the stray-light testing station includes an illumination assembly including a spatially extended light source and one or more optical elements arranged to direct a beam of light from the spatially extended light source along an optical path to an optical receiver assembly including a lens receptacle configured to receive a lens module and position the lens module in the optical path downstream from the parabolic mirror so that the lens module focuses the beam of light from the spatially extended light source to an image plane, and a moveable frame supporting the optical receiver assembly including one or more adjustable alignment stages to position the optical receiver assembly relative to the illumination assembly such that the optical path of the illumination assembly is within a field of view of the optical receiver assembly.
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公开(公告)号：US20240090102A1
公开(公告)日：2024-03-14
申请号：US18519035
申请日：2023-11-26
Applicant: Apple Inc.
Inventor： Alfredo Bismuto , Yi-Juei Ryan Wu , Thomas Schrans , Andrea Trita , Aaron Zilkie
IPC: H05B47/105 , G01J1/02 , G01J1/42 , G02B6/293 , G02B6/42
CPC classification number: H05B47/105 , G01J1/0238 , G01J1/4228 , G02B6/29301 , G02B6/29328 , G02B6/29343 , G02B6/29395 , G02B6/4215 , G02B6/2935 , G02B6/29358 , G02B6/2938
Abstract: Disclosed herein is an integrated photonics device including a frequency stabilization subsystem for monitoring and/or adjusting the wavelength of light emitted by one or more light sources. The device can include one or more selectors that can combine, select, and/or filter light along one or more light paths, which can include light emitted by a plurality of light sources. Example selectors may include, but are not limited to, an arrayed waveguide grating (AWG), a ring resonator, a plurality of distributed Bragg reflectors (DBRs), a plurality of filters, and the like. Output light paths from the selector(s) can be input into one or more detector(s). The detector(s) can receive the light along the light paths and can generate one or more signals as output signal(s) from the frequency stabilization subsystem. A controller can monitor the wavelength and can adjust or generate control signal(s) for the one or more light sources to lock the monitored wavelength to a target wavelength (or within a targeted range of wavelengths).
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公开(公告)号：US20230375399A1
公开(公告)日：2023-11-23
申请号：US18026308
申请日：2021-09-16
Applicant: Omar MAGANA-LOAIZA , Chenglong YOU
Inventor： Omar MAGANA-LOAIZA , Chenglong YOU
CPC classification number: G01J1/0238 , G01J1/0271 , G01J1/44 , G06N3/04 , G01J2001/442 , G01J2001/448
Abstract: A method and system for identification of light source types includes detecting individual photons for a measurement time period to provide a times series of individual photon events, segmenting the time series into a plurality of time bins, and determining a number of detected photons within each time bin to provide a time series of photon counts, determining a probability distribution P(n) from the time series of photon counts, the probability distribution providing the probability of detection of n photons (n=0 . . . nmax), inputting each of the values of P(n) as a nmax+1 component feature vector into a single neuron neural network that has been previously trained on a plurality of light source types, and receiving as output a classifier that has a value that identifies the light source type. An average number of photons in the plurality of time bins is less than one photon.
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公开(公告)号：US11774834B2
公开(公告)日：2023-10-03
申请号：US17479345
申请日：2021-09-20
Applicant: STMicroelectronics LTD , STMicroelectronics S.r.l.
Inventor： Alex Domnits , Elan Roth , Davide Terzi , Luca Molinari , Marco Boschi
CPC classification number: G03B21/142 , G01J1/0238 , G01J1/44 , G03B21/008 , G03B21/2033
Abstract: A scanning laser projector includes an optical module and projection engine. The optical module includes a laser generator outputting a laser beam, and a movable mirror scanning the laser beam across an exit window defined through the housing in a scanning pattern wider than the exit window such that the laser beam is directed through the exit window in a projection pattern that is smaller than and within the scanning pattern. A first light detector is positioned about a periphery of the exit window such that as the movable mirror scans the laser beam in the scan pattern, at a point in the scan pattern where the laser beam is scanned across an interior of the housing and not through the exit window, the laser beam impinges upon the first light detector. The projection engine adjusts driving of the movable mirror based upon output from the first light detector.
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公开(公告)号：US11652179B2
公开(公告)日：2023-05-16
申请号：US17151781
申请日：2021-01-19
Inventor： Sushma Kotru , Vaishali Batra
IPC: G01J5/34 , H01L31/032 , H01L31/0465 , H01L31/09 , G01J1/44 , G01J1/42 , H01L31/108 , H01L31/109 , G01J5/10 , G01J5/04 , H01L31/0224 , G01J1/02
CPC classification number: H01L31/032 , G01J1/0219 , G01J1/429 , G01J1/44 , G01J5/046 , G01J5/10 , G01J5/34 , H01L31/022475 , H01L31/0465 , H01L31/09 , H01L31/108 , H01L31/109 , G01J1/0238 , G01J2001/0257 , G01J2001/4266 , G01J2001/446 , Y02E10/50
Abstract: Embodiments disclosed herein facilitates the monitoring of direct ultraviolet B (UVB) radiation exposure by a person via a system having a sensor (such as Lanthanum doped lead zirconate titanate (PLZT) thin-film sensors or other ferroelectric-based sensors) sensitive to UVB radiation. The system beneficially provides current real-time dosage information associated with Vitamin D production by the person as well as real-time indication of safe exposure and/or harmful exposure to current UVB radiation conditions while also, in some embodiments, takes into consideration a person's age, skin type and sensitivity, body surface area exposed.
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Patent Agency Ranking
公开(公告)号：US10018502B2
公开(公告)日：2018-07-10
申请号：US14800816
申请日：2015-07-16
Applicant: FUNAI ELECTRIC CO., LTD.
Inventor： Atsushi Mushimoto , Ryusuke Horibe , Manabu Murayama , Yuichiro Masuda , Tomohisa Hirai , Shingo Setono
CPC classification number: G01J1/0238 , G01J1/4257 , G01J1/44 , G01J2001/444 , G01S7/4817 , G01S7/4972 , G01S17/08 , G01S17/42
Abstract: A laser scanner includes: a light source; a scanning mirror that scans laser light emitted from the light source, toward a target object by oscillating about axis C; a photodetector that generates a photodetection signal upon receiving the laser light reflected from the target object; a controller that controls emission of the laser light by the light source, and that performs sampling on the photodetection signal; and a detector that detects an amount of displacement of the scanning mirror, and calculates a resonant frequency of the scanning mirror based on the amount of displacement detected. The controller determines a time at which the laser light is emitted from the light source and a time at which sampling is performed on the photodetection signal, based on the resonant frequency calculated.
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公开(公告)号：US20170280544A1
公开(公告)日：2017-09-28
申请号：US15613789
申请日：2017-06-05
Applicant: GIGAPHOTON INC.
Inventor： Yoshifumi UENO , Takashi SUGANUMA , Yoshiaki KUROSAWA
CPC classification number: H05G2/008 , G01J1/0238 , G01J1/0403 , G01J1/0411 , G01J1/0448 , G01J1/4257 , G02B17/0892 , G02B17/0896 , G02B19/0095 , G02B26/0816 , H01S3/005
Abstract: A beam delivery system may include: beam adjusters configured to adjust a divergence angle of a pulse laser beam; a beam sampler configured to separate a part of the pulse laser beam outputted from a first beam adjuster provided at the most downstream among the beam adjusters to acquire a sample beam; a beam monitor configured to receive the sample beam and output a monitored diameter; and a beam delivery controller configured to control the beam adjusters based on the monitored diameter. The beam delivery controller may adjust each of beam adjusters other than the first beam adjuster selected one after another from the most upstream so that the monitored diameter at the beam monitor becomes a predetermined value specific to the beam adjuster, and adjust the first beam adjuster so that the pulse laser beam becomes focused at a position downstream of a target position.
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公开(公告)号：US09753312B2
公开(公告)日：2017-09-05
申请号：US14849255
申请日：2015-09-09
Applicant: International Business Machines Corporation
Inventor： Stephen James Moore
CPC classification number: G02C11/10 , G01J1/0219 , G01J1/0238 , G01J1/16 , G01J1/42 , G01J1/4204 , G02C11/04
Abstract: There is provided a method for improving a night vision by operating a pair of eyeglasses comprising: a sensor that detects an intensity of a light near a user; a comparator device that compares the detected light intensity near the user against a dimness threshold; and an onboard projector in the pair of eyeglasses projecting a red light simultaneously into each eye of the user if the detected light intensity near the user becomes lower than the threshold.
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公开(公告)号：US20170248520A1
公开(公告)日：2017-08-31
申请号：US15436763
申请日：2017-02-18
Applicant: FUJIFILM Corporation
Inventor： Masato SAITOU
CPC classification number: G01N21/6456 , G01J1/0214 , G01J1/0238 , G01J1/0403 , G01J1/0448 , G01J1/0492 , G01J3/0235 , G01J3/0275 , G01J3/4406 , G01J2003/1217 , G01J2003/1221 , G01N27/44721 , G01N2021/6419 , G01N2021/6421 , G01N2021/6471 , G02B7/006
Abstract: First and second filter magazines in each of which plural filters having different transmission wavelengths from each other are arranged in a row are provided, and the first and second filter magazines are arranged next to each other in one direction. A light detection unit in which plural photomultipliers of first and second photomultipliers, each of which detects light that has passed through at least one of the filters included in the first and second filter magazines, are arranged in the arrangement direction of the filters is provided, and the light detection unit is placed in the one direction in such a manner to be parallel to the first and second filter magazines. The apparatus is configured in such a manner that the first and second filter magazines and the light detection unit are movable in the arrangement direction of the filters.
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公开(公告)号：US09743483B2
公开(公告)日：2017-08-22
申请号：US15093917
申请日：2016-04-08
Applicant: OSRAM SYLVANIA Inc.
CPC classification number: H05B33/0869 , G01J1/0228 , G01J1/0238 , G01J1/16 , G01J1/58 , G01J2001/1673
Abstract: Techniques are disclosed for maintaining consistent lumen output of a lighting assembly over time. By maintaining a consistent lumen output, it is possible to maintain acceptable color stability where color mixing of multiple outputs is used. The lighting assembly may be any lighting configuration that might suffer from lumen depreciation and/or color drift over time, and may include any type(s) of light source(s) that may be monitored and driven accordingly. The lighting assembly, in addition to light source(s), includes a photo detector and a directed light source, such as a laser. The directed light source provides a golden sample for use in calibrating the photo detector, which in turn monitors lumen output of the light source(s). Drive signals are adjusted to account for lumen depreciation of the monitored light source(s).
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