公开(公告)号：US20240328853A1

公开(公告)日：2024-10-03

申请号：US18507115

申请日：2023-11-13

Applicant: ELITE SEMICONDUCTOR MICROELECTRONICS TECHNOLOGY INC.

Inventor： DAR-CHANG JUANG

IPC: G01J1/44 ,  G01J1/02 ,  H03F3/08

CPC classification number: G01J1/44 ,  G01J1/0228 ,  H03F3/087 ,  G01J2001/444 ,  H03G3/3084

Abstract: An active clamp photoelectric sensing device includes an input terminal, a first output terminal, a current-to-voltage conversion circuit, and an active clamp circuit. The input terminal receives an input current. The first output terminal outputs a first output voltage. The current-to-voltage conversion circuit is coupled between the input terminal and the first output terminal, and is used to discharge and lower potentials of the input terminal and the first output terminal to a first set voltage according to the state of a reset signal, or is used to gradually increase the first output voltage to a second set voltage. The active clamping circuit is coupled to the current-to-voltage conversion circuit, and is used to clamp the upper limit of the first output voltage to the second set voltage.

公开(公告)号：US20240063604A1

公开(公告)日：2024-02-22

申请号：US18232927

申请日：2023-08-11

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Jungwon KIM ,  Igju Jeon ,  Changmin Ahn

IPC: H01S5/0687 ,  H01S5/183 ,  G01J1/02 ,  G01J1/04

CPC classification number: H01S5/0687 ,  H01S5/18355 ,  G01J1/0228 ,  G01J1/0238 ,  G01J1/0425

Abstract: Provided is a laser stabilization apparatus including an optical fiber resonator that is in the form of an optical fiber loop with an optical fiber delay-line, and is designed to resonate at a stabilized frequency of a laser, wherein when light emitted from the laser is input to the optical fiber resonator, a transmittance thereof changes according to a frequency of the input light, and a light measurer configured to measure light output from the optical fiber resonator and generate an error signal for stabilizing a frequency of the laser.

公开(公告)号：US11885672B2

公开(公告)日：2024-01-30

申请号：US17589098

申请日：2022-01-31

Applicant: Lutron Technology Company LLC

Inventor： James P. Steiner ,  Greg Edward Sloan ,  Nathan A. Boring

IPC: G01J1/02 ,  G01J1/16 ,  G01J1/32 ,  H05B47/11 ,  H05B47/10 ,  H05B47/19 ,  G01J1/44

CPC classification number: G01J1/02 ,  G01J1/0219 ,  G01J1/0228 ,  G01J1/0247 ,  G01J1/16 ,  G01J1/32 ,  G01J1/44 ,  H05B47/10 ,  H05B47/11 ,  H05B47/19 ,  Y02B20/40

Abstract: A wireless battery-powered daylight sensor for measuring a total light intensity in a space is operable to transmit wireless signals using a variable transmission rate that is dependent upon the total light intensity in the space. The sensor comprises a photosensitive circuit, a wireless transmitter for transmitting the wireless signals, a controller coupled to the photosensitive circuit and the wireless transmitter, and a battery for powering the photosensitive circuit, the wireless transmitter, and the controller. The photosensitive circuit is operable to generate a light intensity control signal in response to the total light intensity in the space. The controller transmits the wireless signals in response to the light intensity control signal using the variable transmission rate that is dependent upon the total light intensity in the space. The variable transmission rate may be dependent upon an amount of change of the total light intensity in the space. In addition, the variable transmission rate may be further dependent upon a rate of change of the total light intensity in the space.

公开(公告)号：US11792387B2

公开(公告)日：2023-10-17

申请号：US17894501

申请日：2022-08-24

Applicant: Ignis Innovation Inc.

Inventor： Vyacheslav Shyshkin ,  Adam Saechao

IPC: G09G3/00 ,  G09G3/3225 ,  H04N17/04 ,  G01J1/02 ,  G01J1/32

CPC classification number: H04N17/04 ,  G01J1/0228 ,  G01J1/32 ,  G09G3/006 ,  G09G3/3225 ,  G09G2320/0233 ,  G09G2320/0693

Abstract: What is disclosed are systems and methods of optical correction for pixel evaluation and correction for active matrix light emitting diode device (AMOLED) and other emissive displays. Optical correction for correcting for non-homogeneity of a display panel uses sparse display test patterns in conjunction with a defocused camera as the measurement device to avoid aliasing (moiré) of the pixels of the display in the captured images.

公开(公告)号：US11754438B2

公开(公告)日：2023-09-12

申请号：US17651308

申请日：2022-02-16

Applicant: Alcon Inc.

Inventor： Christopher Carl Jung

IPC: G01J1/02 ,  A61F9/007 ,  G01J1/08 ,  G01N21/94 ,  G01N21/15

CPC classification number: G01J1/0228 ,  A61F9/00736 ,  G01J2001/083 ,  G01N21/15 ,  G01N21/94 ,  G01N2021/157 ,  G01N2021/945 ,  G01N2201/062

Abstract: Certain embodiments provide a self-checking photoelectric sensor that is configured to determine a characteristic (e.g., an amount of blockage and/or wellness/decay) of an optical pathway (e.g., an electro-optical pathway). An example method generally includes increasing, over a time period that starts at a first time, a current input to a light emitting element (LEE). The method generally includes receiving, by a light detection element, an output of the LEE via the optical pathway during the time period. The method generally includes converting, during the time period, the LEE output to a voltage output. The method generally includes determining a second time in the time period when the voltage output crosses a threshold. The method generally includes determining the characteristic of the optical pathway between the LEE and the light detection element based on a difference between the second time and the first time.

公开(公告)号：US20180120153A1

公开(公告)日：2018-05-03

申请号：US15856776

申请日：2017-12-28

Applicant: International Business Machines Corporation

Inventor： Jason S. Orcutt ,  Paul M. Solomon

IPC: G01J1/44 ,  H04B10/69 ,  G02B6/42 ,  G02B6/12 ,  G02B6/122

CPC classification number: G01J1/44 ,  G01J1/0204 ,  G01J1/0228 ,  G01J1/0425 ,  G01J1/0448 ,  G01J1/0459 ,  G01J2001/0481 ,  G02B6/12004

Abstract: A photoreceiver device includes a light detector connected between a power supply node and a first node, and first to third switching elements. The light detector is configured to detect an incident optical data signal, and to output photocurrent corresponding to a magnitude of the optical data signal through the first node. The first switching element is connected between the first node and a ground node. The second switching element is connected between the power supply node and a second node. The third switching element is connected between the second node and the ground node. The third switching element has a control node connected to the first node.

公开(公告)号：US20180092308A1

公开(公告)日：2018-04-05

申请号：US15711291

申请日：2017-09-21

Applicant: Sensor Electronic Technology, Inc.

Inventor： Arthur Peter Barber, III ,  Maxim S. Shatalov ,  Alexander Dobrinsky ,  Michael Shur

IPC: A01G7/04 ,  G01N21/64 ,  A01G9/20 ,  A23B7/015 ,  A23L3/28 ,  H05B37/02

CPC classification number: A01G7/045 ,  A01G9/20 ,  A23B7/015 ,  A23L3/28 ,  G01J1/0228 ,  G01J1/10 ,  G01J1/16 ,  G01J1/20 ,  G01J1/24 ,  G01J1/26 ,  G01J1/42 ,  G01J1/429 ,  G01J2001/1657 ,  G01J2001/4252 ,  G01N21/6486 ,  H05B33/0854 ,  H05B37/0227 ,  H05B37/0281 ,  Y02P60/149

Abstract: An approach for controlling ultraviolet intensity over a surface of a light sensitive object is described. Aspects involve using ultraviolet radiation with a wavelength range that includes ultraviolet-A and ultraviolet-B radiation to irradiate the surface. Light sensors measure light intensity at the surface, wherein each sensor measures light intensity in a wavelength range that corresponds to a wavelength range emitted from at least one of the sources. A controller controls the light intensity over the surface by adjusting the power of the sources as a function of the light intensity measurements. The controller uses the light intensity measurements to determine whether each source is illuminating the surface with an intensity that is within an acceptable variation with a predetermined intensity value targeted for the surface. The controller adjusts the power of the sources as a function of the variation to ensure an optimal distribution of light intensity over the surface.

公开(公告)号：US20180033223A1

公开(公告)日：2018-02-01

申请号：US15661083

申请日：2017-07-27

Applicant: Robert Bosch GmbH

Inventor： Nikolaos Gortsas

IPC: G07C5/08 ,  G01J1/02 ,  G01P21/00

CPC classification number: G07C5/0808 ,  B60W50/0205 ,  B60W2050/0215 ,  G01J1/0228 ,  G01M17/00 ,  G01P21/00 ,  G07C5/008

Abstract: The disclosure relates to a sensor apparatus for a vehicle, in particular a motor vehicle, having at least one sensor for detecting operational values of the vehicle while driving on a roadway, having a checking device for monitoring the functional capability of the at least one sensor. There is provision that the checking device has at least one communication device which is designed to detect a reference means in the surroundings of the vehicle during driving, and a control unit which compares an output signal of the sensor with an expected setpoint output signal as a function of a detected reference means, in order to determine the functional capability of the sensor.

公开(公告)号：US20170241832A1

公开(公告)日：2017-08-24

申请号：US15519854

申请日：2015-10-19

Applicant: KUKA INDUSTRIES GMBH & CO. KG.

Inventor： Ansgar SCHÄFER ,  Lars Soeren OTT ,  Klaus R GOEBEL

IPC: G01J1/02 ,  G01J1/44

CPC classification number: G01J1/0228 ,  G01J1/0271 ,  G01J1/42 ,  G01J1/44 ,  G01J2001/0285 ,  G01J2001/4466

Abstract: A method for monitoring radiation by an optical sensor which generates a signal, such as a shut-off signal, which influences the radiation when subjected to radiation. A sensor with dark current pulses is used, which are assessed as a functional capability signal of the sensor.

公开(公告)号：US20170205279A1

公开(公告)日：2017-07-20

申请号：US15407431

申请日：2017-01-17

Applicant: SICK ENGINEERING GMBH

Inventor： Kai KLINDER

IPC: G01J1/04 ,  G02B26/08 ,  G01J1/02

CPC classification number: G01J1/0414 ,  G01J1/0228 ,  G01J1/0295 ,  G01N21/276 ,  G01N21/53 ,  G01N21/534 ,  G01N2021/157 ,  G01N2021/4709 ,  G01N2201/0636 ,  G01N2201/127 ,  G02B26/0833

Abstract: An optical sensor comprises a light transmitter; a light receiver; an evaluation unit; at least one mirror unit that comprises a plurality of micromirror elements having an at least regionally reflective surface and comprising an electrode arrangement connected to the micromirror elements; and a control device that is configured to adjust the mirror unit between at least two different functional states by controlling the electrode arrangement. The mirror unit comprises an at least substantially transparent substrate at which the micromirror elements are arranged. The control device is configured to temporarily set the mirror unit into a transmission state in which the micromirror elements are in an open position and light radiation incident onto the mirror unit moves past the micromirror elements through the transparent substrate.