公开(公告)号：US12052807B2

公开(公告)日：2024-07-30

申请号：US18212994

申请日：2023-06-22

Applicant: Lutron Technology Company LLC

Inventor： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC: H05B47/10 ,  G01J1/02 ,  G01J1/32 ,  G01J1/42 ,  G01J1/44 ,  G01J3/02 ,  G01J3/46 ,  G01J3/50 ,  G01R31/44 ,  H05B45/12 ,  H05B45/18 ,  H05B45/22 ,  H05B45/24 ,  H05B47/105 ,  H05B47/21 ,  H05B47/24

CPC classification number: H05B47/10 ,  G01J1/0252 ,  G01J1/32 ,  G01J1/42 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/505 ,  G01R31/44 ,  H05B45/12 ,  H05B45/22 ,  H05B45/24 ,  H05B47/22 ,  H05B47/24 ,  G01J2001/4252 ,  G01J2001/444 ,  H05B45/18 ,  H05B47/105

Abstract: An illumination device and method are provided herein for calibrating individual LEDs in the illumination device to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

公开(公告)号：US11788885B2

公开(公告)日：2023-10-17

申请号：US17577385

申请日：2022-01-18

Applicant: ADVANTEST CORPORATION

Inventor： Kotaro Hasegawa ,  Kouji Miyauchi ,  Go Utamaru

IPC: G01J1/44 ,  G01J1/42

CPC classification number: G01J1/44 ,  G01J2001/4252

Abstract: A test apparatus includes: an electrical connection unit electrically connected to a terminal of each of a plurality of light emitting devices to be tested; a light source unit for collectively irradiating the plurality of light emitting devices with light; an electrical measurement unit for measuring a photoelectric signal obtained by photoelectrically converting the light irradiated from the light source unit by each light emitting device; a light emission control unit for causing at least one light emitting device to be subjected to light emission processing to emit light; a light measuring unit for measuring light emitted by the at least one light emitting device to be subjected to the light emission processing; and a determination unit determining a quality of each light emitting device on the basis of a measurement result of the electrical measurement unit and a measurement result of the light measuring unit.

公开(公告)号：US20190183395A1

公开(公告)日：2019-06-20

申请号：US16285920

申请日：2019-02-26

Applicant: The George Washington University

Inventor： Matthew Kay ,  Angel Moreno ,  Rafael Jaimes

IPC: A61B5/1486 ,  A61B1/06 ,  A61B5/1459 ,  A61B1/04 ,  A61B5/00

CPC classification number: A61B5/1486 ,  A61B1/043 ,  A61B1/0684 ,  A61B5/0075 ,  A61B5/0084 ,  A61B5/1459 ,  A61B5/4866 ,  A61B5/6852 ,  A61B2017/00057 ,  A61B2018/00351 ,  A61F7/00 ,  A61F2007/0056 ,  A61F2007/126 ,  G01J1/4257 ,  G01J1/429 ,  G01J2001/4247 ,  G01J2001/4252

Abstract: The invention provides for a system for in vivo real time measurement of NADH recovery kinetics, comprising: 1) a specific pulse sequence to non-destructively, yet effectively, photobleach NADH for measurement of NADH recovery kinetics; 2) illumination light parameters to acquire NADH fluorescence before and after photobleaching, without causing fluorescence bleaching artifacts, for measurement of NADH recovery kinetics; and 3) configurations for devices capable of photobleaching NADH by at least 10% within tissues for effective measurement of NADH recovery kinetics in tissues within a living subject or excised tissues and organs.

公开(公告)号：US20190137334A1

公开(公告)日：2019-05-09

申请号：US16096264

申请日：2017-03-16

Applicant: IIX INC.

Inventor： Hiroshi Murase

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/4252 ,  G01M11/00 ,  G09G3/20 ,  G09G3/32 ,  G09G2320/0233 ,  G09G2330/10 ,  G09G2330/12 ,  G09G2360/16

Abstract: Given that a plurality of visual transfer function curves for a display panel are provided for each of different ranges from the display panel, two-dimensional luminance distribution data of the display panel is filtered using a filter having visual frequency characteristics substantially passing through: a part where a recognition sensitivity increases as a spatial frequency increases in a short-range function curve, which among the plurality of visual transfer function curves is the closest to the display panel; a peak part of the short-range function curve; a peak part in a long-range function curve, which among the plurality of visual transfer function curves is the farthest from the display panel; and a part where the recognition sensitivity decreases as the spatial frequency increases in the long-range function curve. An evaluation value of luminance unevenness of the display panel is calculated on the basis of the filtered two-dimensional filtering data.

公开(公告)号：US20180209633A1

公开(公告)日：2018-07-26

申请号：US15934076

申请日：2018-03-23

Applicant: ProPhotonix Limited

Inventor： Karol Murphy ,  Peter Panek ,  Kieran Lynch

IPC: F21V29/70 ,  G01J1/04

CPC classification number: F21V29/70 ,  B41J11/002 ,  F21V17/101 ,  F21V17/107 ,  F21V23/005 ,  F21Y2113/13 ,  F21Y2115/10 ,  G01J1/0407 ,  G01J1/0422 ,  G01J2001/4252 ,  G02B6/0096

Abstract: A novel LED lamp comprising: a lamp body; an LED mounted to the lamp body; an outer (exit) window; and a hinged clamp for releasably mounting the outer (exit) window to the lamp body such that light emitted from the LED passes through the outer (exit) window.

公开(公告)号：US20170234733A1

公开(公告)日：2017-08-17

申请号：US15428948

申请日：2017-02-09

Applicant: NASA SOLUTIONS, LLC

Inventor： Denis Corrochano

IPC: G01J3/50 ,  G01J3/28 ,  G01J3/02

CPC classification number: G01J3/505 ,  G01J1/0204 ,  G01J1/0492 ,  G01J3/0264 ,  G01J3/513 ,  G01J2001/4252

Abstract: A method and apparatus for determining a color and brightness of an LED, when the LED is biased with a current pulse. The apparatus includes a sensor having a plurality of filters and an output probe connected to the sensor, the output probe providing a color output and a brightness output in a single signal. The sensor may further include an input probe connected to the sensor providing power and a ground probe connected to the sensor providing a grounded connection to the sensor. The plurality of filters in the sensor are preferably configured in a matrix array of color receptors having different colors. The method of this invention utilizes pulsing/dynamic sampling to determine a frequency and/or a brightness of the LED output.

公开(公告)号：US20170234727A1

公开(公告)日：2017-08-17

申请号：US15432583

申请日：2017-02-14

Applicant: Feasa Enterprises Limited

Inventor： Eamonn O'Toole ,  Timothy Davern ,  Michael Crowley

IPC: G01J1/42 ,  G01J1/04

CPC classification number: G01J1/4228 ,  B60Q1/38 ,  B60Q11/007 ,  G01J1/0425 ,  G01J1/42 ,  G01J2001/4247 ,  G01J2001/4252 ,  G01R31/2635

Abstract: A method comprising optically detecting optical output states of a plurality of light sources of an optical device over a test interval; for each light source, optically detecting that the output state of the light source has changed from a first optical condition to a second optical condition; for each light source, optically detecting that the output state of the light source has changed from the second optical condition to a third optical condition; for each light source, determining a first time interval representative of the first optical condition; for each light source, determining a second time interval representative of the second optical condition; for each light source, determining a third time interval representative of the third optical condition; determining a test result for the device based on a comparison of the first, second and third time intervals with pre-stored time intervals.

公开(公告)号：US20170086277A1

公开(公告)日：2017-03-23

申请号：US15174470

申请日：2016-06-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sun Ki KIM

IPC: H05B37/02 ,  F21S8/10 ,  B60Q1/30 ,  B60Q1/06 ,  H05B33/08 ,  B60Q1/14

CPC classification number: H05B33/0827 ,  F21Y2101/00 ,  G01J1/00 ,  G01J1/0219 ,  G01J1/32 ,  G01J1/4228 ,  G01J2001/4252 ,  H05B33/0869

Abstract: A device for testing a lighting device including a plurality of light emitting diodes (LEDs) and an LED driver configured to drive the plurality of LEDs to emit light includes a camera configured to image a surface on which light output by the LED lighting device is incident, and generate image data corresponding to an output of the LED lighting device; and a controller configured to compare the image data with a reference condition, and in response to the output of the LED lighting device deviating from the reference condition, control the LED driver to modify brightness of at least a portion of the plurality of LEDs.

公开(公告)号：US09599659B2

公开(公告)日：2017-03-21

申请号：US14722746

申请日：2015-05-27

Applicant: Keiji Tsuda

Inventor： Keiji Tsuda

IPC: G01N21/00 ,  G01R31/26 ,  G01J1/02 ,  G01J1/42

CPC classification number: G01R31/2635 ,  G01J1/0271 ,  G01J1/42 ,  G01J2001/4252

Abstract: An inspection device is provided including a light emitting element configured to emit light, a light receiving element arranged so as to face the light emitting element and configured to receive the light, where one of the light emitting element and the light receiving element is used as a to-be-inspected element, and the other one of the light emitting element and the light receiving element is used as an inspection element that inspects the to-be-inspected element, a housing configured to accommodate the inspection element, and a lid configured to be detachable from the housing. In the inspection device, one of the housing and the lid is provided with an arrangement unit to which the to-be-inspected element is set in a detachable manner, and the lid includes a contact unit that electrically contacts the to-be-inspected element by touching and detaching from the to-be-inspected element.

公开(公告)号：US09526150B1

公开(公告)日：2016-12-20

申请号：US14242371

申请日：2014-04-01

Applicant: KLA-Tencor Corporation

Inventor： Yu Guan

IPC: H01J7/24 ,  H01J13/32 ,  H01J17/28 ,  H01J19/74 ,  H01J61/52 ,  H05B37/02 ,  B60Q1/14 ,  F21S8/10 ,  H05B33/08 ,  F21Y101/02 ,  F21Y103/00

CPC classification number: H05B37/0227 ,  B60Q1/14 ,  B60Q1/1407 ,  B60Q1/1415 ,  B60Q1/1423 ,  B60Q1/143 ,  B60Q1/1438 ,  B60Q1/1446 ,  F21S43/00 ,  F21Y2101/00 ,  F21Y2115/10 ,  G01J1/0414 ,  G01J1/0488 ,  G01J1/32 ,  G01J2001/0481 ,  G01J2001/4252 ,  H05B33/0869 ,  H05B33/0872 ,  H05B37/02

Abstract: The stabilization of a light-emitting diode (LED) calibration standard includes a light-emitting diode (LED), or an array of LEDs; a cylindrical hood surrounding the LED; an interior baffle for keeping the light output of the LED, and ambient light from behind the LED, from escaping to the other side; a photodetector for receiving the light output of the LED and generating a signal proportional to luminous output; and a hood surrounding the photodetector. A variable current source receives the signal and stabilizes the LED light output by adjusting the operating current of the LED to maintain a constant light output from the LED.

Abstract translation: 发光二极管（LED）校准标准的稳定包括发光二极管（LED）或LED阵列; 围绕LED的圆柱形罩; 用于保持LED的光输出的内部挡板和来自LED后面的环境光从逸出到另一侧; 用于接收LED的光输出并产生与发光输出成比例的信号的光电检测器; 以及围绕光电检测器的罩。 可变电流源通过调节LED的工作电流来接收信号并稳定LED光输出，以保持LED的恒定光输出。