公开(公告)号：US12105020B2

公开(公告)日：2024-10-01

申请号：US17351126

申请日：2021-06-17

Applicant: FLIR Systems AB

Inventor： Jonas Sandsten ,  Sten Lindau

IPC: G01N21/3518 ,  G02B5/28 ,  G02B13/14

CPC classification number: G01N21/3518 ,  G02B5/281 ,  G02B13/14 ,  G01N2201/0648 ,  G01N2201/0686

Abstract: Provided are systems and methods to filter infrared spectrum radiation that can be integrated with a compact optical system for an infrared imaging system. The optical system includes an objective lens element configured to receive and transmit infrared (IR) radiation from a scene, where the IR radiation from the scene includes a particular range of wavelengths corresponding to an absorption spectrum or a transmission spectrum of a gas. The optical system also includes a spectral lens element configured to receive the IR radiation transmitted through the objective lens element, where the spectral lens element comprises a first interference filter disposed on a first surface of the spectral lens element. The interference filter is configured to filter the IR radiation transmitted through the objective lens element to a narrower wavelength band that includes the particular range of wavelengths.

公开(公告)号：US20240319421A1

公开(公告)日：2024-09-26

申请号：US18610300

申请日：2024-03-20

Applicant: VACTRONICS TECHNOLOGIES INC.

Inventor： Sen-Tsung HSIAO ,  Hsang-Yang LIN ,  Hung-Jen PAN ,  Ping-Yuan CHEN

IPC: G02B5/28

CPC classification number: G02B5/281

Abstract: A dual pass band filter element includes: a substrate, and a bandpass filtering structure and an anti-reflection structure formed on two opposite surfaces of the substrate. The bandpass filtering structure includes a plurality of first material layers and a plurality of second material layers with a refractive index higher than the respective first material layers, wherein the first and second material layers are stacked alternately along the normal of the substrate; the dual pass band filter element has a first pass band and a second pass band that does not overlap with the first pass band in a band of 400 nm to 1800 nm. In this way, two different bands of light are allowed to pass through the dual pass band filter element, thereby expanding the application field of the dual pass band filter element.

公开(公告)号：US20240288614A1

公开(公告)日：2024-08-29

申请号：US18656731

申请日：2024-05-07

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guanglei DU ,  John A. WHEATLEY ,  Yi Hang LV ,  Anthony M. RENSTROM ,  Neeraj SHARMA ,  Fuguo XU

IPC: G02B5/26 ,  G02B5/20 ,  G02B5/22 ,  G02B5/28

CPC classification number: G02B5/26 ,  G02B5/206 ,  G02B5/208 ,  G02B5/22 ,  G02B5/223 ,  G02B5/281

Abstract: An optical system includes a multilayer optical film configured to block transmission of visible light but allow peaks or bands of certain visible wavelengths to pass through; an object disposed on a first side of the multilayer optical film; and a light source and a light sensor disposed on an opposite second side of, and facing, the multilayer optical film. The object is configured to receive light emitted by the light source through the multilayer optical film. The light sensor is configured to receive light from the multilayer optical film. An optical filter may include the multilayer optical film disposed on a wavelength selective scattering layer and/or on a wavelength selective absorbing layer. The wavelength selective scattering layer may have a near-infrared scattering ratio of less than about 0.9.

公开(公告)号：US20240263974A1

公开(公告)日：2024-08-08

申请号：US18625325

申请日：2024-04-03

Applicant: AGC Inc.

Inventor： Kazuya TAKEMOTO ,  Atsushi KOYANAGI ,  Naoto TATSUOKA

IPC: G01D11/24 ,  G02B5/28 ,  H05B3/16

CPC classification number: G01D11/245 ,  G02B5/281 ,  H05B3/16

Abstract: A sensor cover, provided in an opening of a housing that houses a sensor, includes a conductor; a dielectric multilayer film; and a heating film, in a desired order from an outside of the housing toward an inside of the housing. The conductor and the heating film are insulated from each other. A shortest distance between the conductor and the heating film is 2.0 μm or more.

公开(公告)号：US11994699B2

公开(公告)日：2024-05-28

申请号：US17145536

申请日：2021-01-11

Applicant: AGC Inc.

Inventor： Hiroyuki Yamamoto ,  Takahiro Mashimo ,  Takuji Oyama ,  Shinya Tahara ,  Tatsuo Nagashima

IPC: G02B5/20 ,  B60J1/00 ,  B60J1/02 ,  G02B5/28

CPC classification number: G02B5/208 ,  B60J1/001 ,  B60J1/02 ,  G02B5/281 ,  G02B5/285

Abstract: An optical member includes a transparent substrate containing at least one substance selected from glass, a glass ceramic, silicon, and sapphire, and having an infrared high-transmittance region in which an optical transmittance is 78% or more in a wavelength band of 700 nm to 1800 nm; and an optical interference film disposed on a main surface of the transparent substrate corresponding to the infrared high-transmittance region, wherein a transmittance of light, of the optical member, of at least one wavelength λ3 in the wavelength band of 700 nm to 1800 nm in a region of the optical member corresponding to the infrared high-transmittance region of the transparent substrate has a minimum value of 86.5% or more and has a difference between the minimum value and a maximum value of 9% or less in a range where an incidence angle is from 0 degrees to 60 degrees.

公开(公告)号：US11953709B2

公开(公告)日：2024-04-09

申请号：US17527837

申请日：2021-11-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guanglei Du ,  John A. Wheatley ,  William B. Kolb ,  John C. Schultz ,  Daoyun Song ,  Luke D. Riveness

IPC: G02B5/26 ,  G02B5/20 ,  G02B5/22 ,  G02B5/28

CPC classification number: G02B5/26 ,  G02B5/206 ,  G02B5/208 ,  G02B5/22 ,  G02B5/223 ,  G02B5/281

Abstract: A system may include one or both of a light emitter and a light receiver. The system may include an optical filter adjacent one or both of the light emitter or the light receiver. The optical filter includes a wavelength selective scattering layer. The wavelength selective scattering layer may have a near-infrared scattering ratio of less than about 0.9. The filter may have a visible reflective haze ratio of greater than about 0.5. A method may include disposing the wavelength selective scattering layer adjacent one or both of the light emitter and the light receiver. An article may include the optical filter. The wavelength selective scattering layer may have an average near-infrared scattering of less than 60%, an average visible scattering of greater than 10%, and a difference between the % total visible reflectance and the % diffuse visible reflectance of less than 20.

公开(公告)号：US11947038B2

公开(公告)日：2024-04-02

申请号：US16229507

申请日：2018-12-21

Applicant: Continental Automotive Systems, Inc.

Inventor： Elliot Smith ,  Heiko Leppin

IPC: G02B5/20 ,  G01S7/481 ,  G01S7/486 ,  G01S17/931 ,  G02B5/28

CPC classification number: G01S7/4811 ,  G01S7/486 ,  G01S17/931 ,  G02B5/208 ,  G02B5/281 ,  G02F2203/055

Abstract: A LIDAR system includes a transmitter unit constructed and arranged to generate light and a photodetector structure for detecting received, reflected light. An actively tunable narrow band optical filter structure is located upstream of the photodetector structure to filter out wavelengths of light associated with sunlight prior to being received by the photodetector structure. The filter structure is constructed and arranged to change optical filtering thereof so as to change wavelengths of light permitted to pass there-through. A photodiode detects light passing through the filter structure. A control unit is associated with the photodiode and the filter structure and is constructed and arranged such that based on the light detected by the photodiode, the control unit can cause the filter structure to change the optical filtering thereof by heating or rotating the filter structure so as to compensate for drifting or broadening of a wavelength of the transmitter unit.

公开(公告)号：US11908226B2

公开(公告)日：2024-02-20

申请号：US16970091

申请日：2019-11-28

Applicant: BEIJING BOE SENSOR TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yajie Feng ,  Cheng Li ,  Yanna Xue ,  Xiaozhou Zhan ,  Yue Geng ,  Kuiyuan Wang ,  Haibo Huang ,  Jingfu Tao

IPC: G06V40/13 ,  G06V40/12 ,  G06V10/147 ,  G06V10/54 ,  F21V8/00 ,  H01L23/60 ,  H05K9/00 ,  G02B5/04 ,  G02B5/28

CPC classification number: G06V40/1318 ,  G02B6/0068 ,  G02B6/0073 ,  G06V10/147 ,  G06V10/54 ,  G06V40/1324 ,  G06V40/1359 ,  G06V40/1376 ,  H01L23/60 ,  H05K9/0067 ,  G02B5/04 ,  G02B5/281 ,  G02B5/285

Abstract: A texture recognition device and a manufacturing method thereof are provided. The texture recognition device includes a backlight component and a photosensitive component. The photosensitive component is on a light-outputting side of the backlight component and configured to detect light emitted by the backlight component and reflected by a texture of a detection object to recognize an image of the texture of the detection object. The photosensitive component includes a plurality of photosensitive sensors and an antistatic layer on a side, away from the backlight component, of the plurality of photosensitive sensors, and orthographic projections of the plurality of photosensitive sensors on a plane where the antistatic layer is located are within the antistatic layer.

公开(公告)号：US20240045125A1

公开(公告)日：2024-02-08

申请号：US18266547

申请日：2021-11-22

Applicant: ISORG

Inventor： Benjamin BOUTHINON ,  Delphine DESCLOUX ,  Wilfrid SCHWARTZ

IPC: G02B5/28 ,  G02B5/20 ,  G02B3/00

CPC classification number: G02B5/286 ,  G02B5/201 ,  G02B5/281 ,  G02B5/208 ,  G02B3/0006

Abstract: An angular filter for an image acquisition device including a stack includes: a layer with mediums having different refraction indexes and transparent to the radiation, the layer only letting through rays of the radiation having incidences smaller than a first maximum incidence; and an array of openings delimited by walls opaque to a visible and/or infrared radiation and an array of microlenses. The assembly formed by the array of openings and the array of microlenses only lets through rays having incidences smaller than a second maximum incidence smaller than the first maximum incidence.

公开(公告)号：US11796391B2

公开(公告)日：2023-10-24

申请号：US17634280

申请日：2020-10-06

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi Kasahara ,  Katsumi Shibayama ,  Kei Tabata ,  Masaki Hirose ,  Hiroki Oyama ,  Yumi Kuramoto

IPC: G01J3/02 ,  G01J3/26 ,  G01J3/45 ,  G02B26/00 ,  G02B5/28

CPC classification number: G01J3/26 ,  G01J3/0297 ,  G01J3/45 ,  G02B5/281 ,  G02B26/001

Abstract: A light detection device includes: a first support part disposed on a mounting surface of the wiring board; a Fabry-Perot interference filter disposed in a first support region of the first support part; and a temperature detector, wherein the temperature detector is disposed on the mounting surface such that at least a part of the temperature detector overlaps a part of the Fabry-Perot interference filter when seen in a first direction perpendicular to the mounting surface and such that at least a part of the temperature detector overlaps a part of the first support part when seen in a second direction in which the first support part and the light detector are aligned with each other, and wherein a first distance between the temperature detector and the first support part in the second direction is smaller than a first width of the first support region in the second direction.