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公开(公告)号：US20240271996A1
公开(公告)日：2024-08-15
申请号：US18408395
申请日：2024-01-09
Applicant: KLA Corporation
Inventor： Matthew Hoffman , Florian Melsheimer , Alon Rosenthal
CPC classification number: G01J1/4257 , G01J1/429 , G01N21/8806 , G03F7/2039 , G03F7/70033 , G03F7/7055 , G03F7/706 , G03F7/706851
Abstract: Methods and systems for determining one or more characteristics of light in an optical system are provided. One system includes a detector positioned in a path of light between a light source in the optical system and a specimen for which the optical system performs a process. The detector includes a center cut-out configured to allow only a first portion of the light from the light source to pass therethrough and four or more detector segments positioned around the center cut-out and in a path of only a second portion of the light from the light source. The four or more detector segments are configured to separately generate output responsive to the light incident thereon. The system also includes a control subsystem configured for determining one or more characteristics of the light from the light source based on the output separately generated by the four or more detector segments.
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公开(公告)号：US20240255346A1
公开(公告)日：2024-08-01
申请号：US18422557
申请日：2024-01-25
Applicant: Alcon Inc.
Inventor： Andrei Deev , Adela Apostol , Mikhail Ovchinnikov
CPC classification number: G01J1/4257 , A61B18/20 , A61B2017/00725 , A61B2018/00779
Abstract: The present disclosure generally relates to systems and methods for laser power measurement, and more particularly, systems and methods for laser power measurement in a sterile operating environment. In certain embodiments described herein, power measurement is performed utilizing two laser sources: 1) a first laser source configured to generate a first laser beam (treatment laser); and 2) a second laser source configured to generate a second laser beam (test laser). The first laser beam generates a bubble in a test material (e.g., water, saline, balanced salt solution, gel, etc.) and the second laser beam is reflected back with the reflected portion of the second laser beam being measured to determine a lifetime of the bubble and correlate the lifetime measurement with a power measurement based on a correlation curve.
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公开(公告)号：US20240201012A1
公开(公告)日：2024-06-20
申请号：US18536168
申请日：2023-12-11
Applicant: NICHIA CORPORATION
Inventor： Yoshiki YAMAJI
CPC classification number: G01J1/4257 , G01J1/20 , H05B45/14
Abstract: A characteristic value correction device includes a waveform acquiring unit, an area calculating unit, a time calculating unit, and a correction coefficient calculating unit. The waveform acquiring unit is configured to acquire a waveform indicating a relationship between an elapsed time and a first current value obtained when the pulse current is applied to a light-emitting device. The area calculating unit is configured to calculate a first area of an entire waveform and a second area of a rectangular wave portion. The time calculating unit is configured to calculate a first time between an application start time and an application end time of the pulse current and a second time corresponding to the second area. The correction coefficient calculating unit is configured to obtain a correction coefficient based on a ratio between the first area and the second area and a ratio between the first time and the second time.
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公开(公告)号：US12015240B2
公开(公告)日：2024-06-18
申请号：US17313014
申请日：2021-05-06
Applicant: TRUMPF Photonic Components GmbH , Robert Bosch GmbH
Inventor： Philipp Henning Gerlach , Susanne Weidenfeld , Robert Wolf , Soren Sofke
CPC classification number: H01S5/0021 , G01J1/4257 , H01S5/0264 , H01S5/183
Abstract: A laser device includes a laser diode configured to emit radiation, an output power of the radiation being dependent on a laser diode driving current, and a photodiode configured to receive the radiation emitted by the laser diode. A photodiode current induced in the photodiode by the received radiation is dependent on a power of the received radiation. The laser device further includes circuitry configured to measure the photodiode current for a laser diode driving current and calculate a laser threshold current of the laser diode from the measured photodiode current as a measure of an actual laser threshold current of the laser diode. The circuitry is further configured to detect a malfunction or degradation of the laser diode.
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公开(公告)号：US20240125645A1
公开(公告)日：2024-04-18
申请号：US17967295
申请日：2022-10-17
Applicant: Haas Laser Technologies, Inc.
Inventor： Michael J. Scaggs
CPC classification number: G01J1/4257 , G01J1/0411
Abstract: A system and method for profiling a focused laser beam of a galvanometer scanner which includes an attenuation optic, wherein the attenuation optic includes a first meniscus lens to face the focused laser beam source, wherein the first meniscus lens is tilted at a fixed angle of incidence relative to an optical axis of the focused laser beam and a second meniscus lens between the first meniscus lens and a pixelated detector, wherein the second meniscus lens is tilted at substantially the same fixed angle of incidence relative to the optical axis of the focused laser beam as the first meniscus lens and is rotated about 90° relative to the first meniscus lens.
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Patent Agency Ranking
公开(公告)号：US11940322B2
公开(公告)日：2024-03-26
申请号：US17627573
申请日：2020-07-15
Applicant: THALES
Inventor： Paul Thibout , Thierry Midavaine , Guillaume Bloom , Yves Courcol , Olivier Verdy
CPC classification number: G01J1/4257 , G01J1/0433
Abstract: The present invention relates to a device for classifying a light source, comprising:
a sensor adapted to receive a luminous flux emitted by a light source, the sensor comprising a plurality of pixels grouped in sets, each set comprising a first pixel and a second pixel adjacent to the first pixel,
each first pixel being adapted to generate a first signal relating to a first portion of luminous flux in a first spectral band received by said first pixel,
each second pixel being adapted to generate a second signal relating to a second portion of luminous flux in a second spectral band received by said second pixel,
a computer configured to compare the first and second signals and to classify the emitting light source according to the result of the comparison.-
公开(公告)号：US11933667B2
公开(公告)日：2024-03-19
申请号：US17190629
申请日：2021-03-03
Applicant: DISCO CORPORATION
Inventor： Hiroshi Morikazu
IPC: G01J1/42 , B23K26/03 , B23K26/046 , B23K26/064 , B23K26/073 , B23K26/70 , B23Q3/06 , G01M11/02
CPC classification number: G01J1/4257 , B23K26/032 , B23K26/046 , B23K26/064 , B23K26/073 , B23K26/705 , B23Q3/067 , G01M11/02
Abstract: An inspection apparatus for a laser oscillator includes a dimming plate that dims a laser beam immediately after the laser beam is emitted from the laser oscillator; an imaging unit that images, with a plurality of pixels, the laser beam dimmed by the dimming plate; a processing unit that processes an image captured by the imaging unit; and a display unit that displays the image processed by the processing unit. The processing unit has at least two thresholds of an inner ring and an outer ring used for partitioning the intensity of the laser beam.
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公开(公告)号：US11927477B2
公开(公告)日：2024-03-12
申请号：US17378612
申请日：2021-07-16
Applicant: TechnoTeam Holding GmbH
Inventor： Klaus Trampert , Udo Krüger , Christian Schwanengel
CPC classification number: G01J1/4257 , G01J1/0238 , G01J1/0242 , G01J1/0266 , G01J1/42 , G01M11/0214 , G01M11/0221 , G01M11/061 , G01M11/065 , G01J2001/4247
Abstract: The present disclosure relates to a method for photometrical charting of a light source (Q, 3) clamped within a positioning device (1) and stationary relative to an object coordinate system (T) by means of a luminance density measurement camera (4) arranged stationary relative to a world coordinate system (W), wherein the light source (Q, 3) is moved between a first actual measurement position (P1′) and at least one further actual measurement position (P2′ to P5′) along a kinematic chain of the positioning device (1) within the world coordinate system (W), wherein a luminance density measurement image (81 to 85) describing the spatial distribution of a photometric characteristic within a measurement surface is recorded by means of the luminance density measurement camera (4) in each actual measurement position (P1′ to P5′) with the light source (Q, 3) turned on, and wherein the position and/or orientation of the object coordinate system (T) relative to the world coordinate system (W) is recorded in each actual measurement position (P1′ to P5′) in direct reference to the world coordinate system (W) without reference to the kinematic chain of the positioning device (1). Moreover, the present disclosure relates to the use of such a method for photometric charting of a headlight (3).
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公开(公告)号：US11892347B2
公开(公告)日：2024-02-06
申请号：US17716818
申请日：2022-04-08
Applicant: RAM Photonics, LLC
Inventor： Per Adamson , Mike Cinquino , Joseph Lawson , Jordan Leidner
CPC classification number: G01J1/0252 , G01J1/4257
Abstract: A system for determining the profile of a laser beam includes a detector having a thermochromic liquid crystal film (TLCF) in thermal communication with a heat spreader and a thermoelectric cooler. The liquid crystal film has a thermochromic response such that heating of the film by a received laser beam creates a detectable color response at the film. The system also includes an image sensor and a controller configured to output an operating current for the TEC and receive images from the sensor. The system can selectively vary the temperature set point of the TEC to change the steady state temperature of the TLCF to examine the full intensity profile of the received beam even when the temperature response bandwidth of the TLCF is too narrow to display the full beam profile in a single color spot.
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公开(公告)号：US11850109B2
公开(公告)日：2023-12-26
申请号：US16641719
申请日：2018-08-27
Applicant: BlueLight Analytics, Inc.
Inventor： Derek Leblanc , Chris Felix
CPC classification number: A61C19/004 , G01J1/0422 , G01J1/0474 , G01J1/4209 , G01J1/4257 , G01J1/429
Abstract: The invention provides a system and related equipment for the precise measurement of the output characteristic of a light source, e.g., a dental light curing unit (LCU) or light for photodynamic therapy, using a light collector, a light detector, and a computer programmed to deliver the value of the output characteristic of the light source to the user. The systems allow for the determination of a proper exposure time or the selection of a light source as needed for a specific application.
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