公开(公告)号：US20200245915A1

公开(公告)日：2020-08-06

申请号：US16854657

申请日：2020-04-21

Applicant: John Jude O'Donnell ,  Colin G. Lyden ,  Michael C.W. Coln

Inventor： John Jude O'Donnell ,  Colin G. Lyden ,  Michael C.W. Coln

IPC: A61B5/1455 ,  A61B5/00 ,  G01J1/46 ,  G01J1/08

Abstract: A photometry device can include a first to emit light to a target in response to a first current through the first LED, a second LED to emit light to the target in response to a second current through the second LED, and an inductor, coupled to the first and second LEDs, to store energy associated with at least one of the first and second currents.

公开(公告)号：US20200217714A1

公开(公告)日：2020-07-09

申请号：US16820594

申请日：2020-03-16

Applicant: Facebook Technologies, LLC

Inventor： Xinqiao LIU

IPC: G01J1/18 ,  G01J1/08 ,  G01J1/16 ,  H01L31/0203 ,  H04N5/357 ,  G01J1/44 ,  G01J1/42 ,  H04N5/359 ,  H01L27/146 ,  H04N5/369 ,  G01J1/02 ,  H04N5/3745

Abstract: In one example, an apparatus comprises: a photodiode configured to generate charge in response to incident light within an exposure period; and a quantizer configured to perform at least one of a first quantization operation to generate a first digital output or a second quantization to generate a second digital output, and output, based on a range of an intensity of the incident light, one of the first digital output or the second digital output to represent the intensity of the incident light. The first quantization operation comprises quantizing at least a first part of the charge during the exposure period to generate the first digital output. The second quantization operation comprises quantizing at least a second part of the charge after the exposure period to generate the second digital output.

公开(公告)号：US10685546B2

公开(公告)日：2020-06-16

申请号：US16327379

申请日：2017-07-31

Applicant: Siemens Schweiz AG

Inventor： Aleksandar Duric ,  Mathias Stäger ,  Stefan Walker

IPC: G08B17/107 ,  G01J1/08 ,  G01J1/42

Abstract: Various embodiments may include a method for fire detection comprising: radiating light at a first wavelength into a scattered light volume and measuring a radiation intensity generated by forward scattering; radiating light at a second wavelength and measuring a second scattered radiation intensity generated by forward scattering; determining a first quotient from the scattered radiation intensities and comparing it to a first and second value; and if the first quotient lies between the first and the second value; radiating pulses at the second wavelength into and measuring a third intensity generated by backward scattering; determining a second quotient from the first and third scattered radiation intensity and comparing the second quotient with a third value; and generating a fire alarm if the second quotient exceeds the third comparison value.

公开(公告)号：US10598546B2

公开(公告)日：2020-03-24

申请号：US15983379

申请日：2018-05-18

Applicant: Facebook Technologies, LLC

Inventor： Xinqiao Liu

IPC: G01J1/18 ,  G01J1/08 ,  G01J1/16 ,  H01L31/0203 ,  H04N5/357 ,  H01L27/32 ,  H01L27/146

Abstract: Two separate schemes are used for detecting light intensity in low light conditions and high light conditions. In high light conditions, two threshold voltages are set and the time between the crossing of a sensor voltage at the two threshold voltages is measured to determine the light intensity in the high light conditions. In low light conditions, a comparator is used to compare the voltage level of the sensor voltage relative to a reference voltage that increase over time. The time when the reference voltage reaches the sensor voltage level is detected to determine the light intensity in the low light conditions.

公开(公告)号：US20200080889A1

公开(公告)日：2020-03-12

申请号：US16129461

申请日：2018-09-12

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Dimitre P. Dimitrov ,  Michael J. Choiniere

IPC: G01J1/44 ,  G01J1/08 ,  G01J1/42 ,  F41G7/22

Abstract: A light sensing apparatus includes: an arrangement of light sensing pixels, one or more pixels each associated with a noise floor and able to detect a triggering level of incoming light above the noise floor from a corresponding portion of a scene; readout circuitry to process and reset the triggering pixels; and an automatic gain control (AGC) to raise the noise floor of one or more pixels. Sometimes, the light sensing apparatus is part of a seeker that includes control circuitry to dynamically control the AGC to raise the noise floor of one or more pixels by an adjustable amount that varies in relation to the distance between the seeker and an intended target. Sometimes, the control circuitry dynamically controls the AGC in response to a concurrent triggering of two or more triggering pixels. or in response to a gain schedule corresponding to guiding the seeker to the intended target.

公开(公告)号：US10475355B2

公开(公告)日：2019-11-12

申请号：US14286306

申请日：2014-05-23

Applicant: Master Dynamic Limited

Inventor： Koon Chung Hui ,  Wing Chi Tang ,  Ho Ching

IPC: G09F3/00 ,  A44C17/00 ,  B41M5/24 ,  G02B5/18 ,  B23K26/00 ,  B23K26/352 ,  G01J1/08 ,  G09F23/00 ,  G01N21/87 ,  B23K103/00

Abstract: An identifiable mark on a portion of a polished facet of a surface of an article and being identifiable by an optical magnifying viewing device, the identifiable mark comprising a nano-structure formed by a two-dimensional or a three-dimensional lattice of a plurality of discrete nanometer sized recessed or protruded entities, wherein the entities are arranged within a predefined region of the polished facet in a predetermined arrangement in relation to each other. The predetermined arrangement of the entities is non-uniform and non-periodic arrangement, and wherein the entities are sized and shaped so as to cause optical scattering upon reflection of incident light having one or more predetermined wavelengths by the lattice at a predetermined angle of incidence to the lattice and the distance from the inner interface surface to the outer interface surface is greater than the amplitude of the non-marked portion of the polished face.

公开(公告)号：US10455779B2

公开(公告)日：2019-10-29

申请号：US15657647

申请日：2017-07-24

Applicant: David Hamby ,  Richard Speer ,  John Selverian ,  Alan Sarkisian ,  Rodrigo Pereyra

Inventor： David Hamby ,  Richard Speer ,  John Selverian ,  Alan Sarkisian ,  Rodrigo Pereyra

IPC: A01G22/00 ,  A01G7/04 ,  H05B33/08 ,  A01G9/26 ,  H05B37/02 ,  G01J1/08 ,  G01J1/32

Abstract: Various implementations disclosed herein includes a method for operating lighting fixtures in horticultural applications. The method may include receiving a user input of a desired irradiance for a first color channel of one or more lighting fixtures that irradiates a plant bed, in which each of the one or more lighting fixtures comprises at least one light emitting diode (LED) array, determining, for each of the one or more lighting fixtures, a PWM setting of the first color channel such that each of the one or more lighting fixtures irradiate the plant bed at the desired irradiance based on calibration data stored in each of the one or more lighting fixtures, and applying, to each of the one or more lighting fixtures, the determined PWM setting of the first color channel.

公开(公告)号：US10433398B2

公开(公告)日：2019-10-01

申请号：US15838770

申请日：2017-12-12

Applicant: Essential Products, Inc.

Inventor： Jason Sean Gagne-Keats

IPC: H05B37/02 ,  G08B13/19 ,  G07D7/12 ,  G01J1/22 ,  G01J1/08 ,  G06F3/042 ,  G01J1/42 ,  G06K9/00 ,  G09G3/3225 ,  G01J3/02 ,  G01J3/10 ,  G01J3/28 ,  G01J3/36 ,  H04N5/33 ,  H01L27/32

Abstract: Presented here is a system to record high-resolution infrared images without the need to include additional stand-alone sensors into the mobile device. According to one embodiment, an organic light emitting diode (OLED) display is modified to emit IR and near-IR light in a large field. The modified display allows for depth sensing and infrared imaging without a stand-alone emitter. Additionally, an IR shutter filter can be applied to the existing front facing red, green, blue (RGB) camera that would only be in place when the display is in IR emission mode. The combination of these two technologies allows a facial recognition system using existing hardware, and not require additional sensors or emitters to achieve face recognition.

公开(公告)号：US10422753B2

公开(公告)日：2019-09-24

申请号：US15557908

申请日：2016-03-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Phillip A. Bolea ,  Giuseppe M. Bommarito ,  Michele A. Waldner ,  Thomas J. Brace ,  Stephen R. Alexander ,  Thomas E. Dewey, Jr.

IPC: G01N21/76 ,  G01J1/42 ,  G01N21/03 ,  G01J1/02 ,  C12Q1/00 ,  C12Q1/66 ,  G01N33/573 ,  G01N33/68 ,  G01J1/04 ,  G01J1/08 ,  G01J3/42 ,  G01N21/94

Abstract: Various embodiments of a light detection device and a system that utilizes such device are disclosed. In one or more embodiments, the light detection device can include a housing that includes a port disposed in a top surface, a receptacle disposed within the housing and adapted to receive a sample, a detector disposed within the housing along an optical axis and including an input surface having an active area, and a reflector disposed within the housing along the optical axis between the receptacle and the input surface of the detector. The reflector can include an input aperture disposed adjacent the receptacle, an output aperture disposed adjacent the input surface of the detector, and a reflective surface that extends between the input aperture and the output aperture.

公开(公告)号：US10388224B2

公开(公告)日：2019-08-20

申请号：US15450128

申请日：2017-03-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyochul Kim ,  Yeonsang Park ,  Kyungsang Cho ,  Weonkyu Koh ,  Younggeun Roh

IPC: H01L33/06 ,  H01S5/02 ,  H01S5/125 ,  G09G3/3258 ,  G01J1/08 ,  G02B27/42 ,  H01L33/44 ,  H01L51/50 ,  H01L51/52 ,  H01L27/32

Abstract: A quantum dot light emitting device includes a grating device which includes a grating region that has a particular grating interval, and a quantum dot layer located above the grating region. The device provides high-purity color light based on a selection of a wavelength band by the grating region in correspondence with a wavelength band of light emitted from the quantum dot layer.