公开(公告)号：US12022172B2

公开(公告)日：2024-06-25

申请号：US17723675

申请日：2022-04-19

Applicant: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA

Inventor： Stephen E. Borg ,  Hyun Jung Kim

IPC: H04N23/11 ,  G01J5/08 ,  G02F1/21 ,  G06T5/50 ,  G06T5/92 ,  G01J5/00

CPC classification number: H04N23/11 ,  G01J5/0859 ,  G02F1/213 ,  G06T5/50 ,  G06T5/92 ,  G01J2005/0077 ,  G06T2207/10048 ,  G06T2207/20208 ,  G06T2207/20221

Abstract: A multi-spectral imaging system utilizing tunable optics is disclosed. Various disclosed systems include a tunable optical filter coupled to a broadband imaging system. The tunable optical filter allows discrete infrared wavelengths to pass to the broadband imaging system so that monochromatic infrared images of a scene may be captured. An image processing system may process selected monochromatic infrared images by using a ratio technique to generate an emissivity-independent thermal image of the scene. The tunable optical filter may also be used to adjust a quality factor and control an amount of radiated energy that is passed to an image sensor of the broadband imaging system thereby acting as an aperture to account for both low and high radiance portions of the scene.

公开(公告)号：US11828650B2

公开(公告)日：2023-11-28

申请号：US17159900

申请日：2021-01-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jineun Kim ,  Younggeun Roh ,  Yeonsang Park ,  Hyochul Kim ,  Moonil Jung

IPC: G01J3/18 ,  G01J3/45 ,  G02B5/28 ,  G01J3/26 ,  G02B5/20 ,  G01J3/28 ,  G01J3/02 ,  H01L27/146 ,  H01L31/0216 ,  G01J3/12 ,  G02F1/21

CPC classification number: G01J3/1895 ,  G01J3/021 ,  G01J3/0205 ,  G01J3/0256 ,  G01J3/0297 ,  G01J3/26 ,  G01J3/2823 ,  G01J3/45 ,  G02B5/201 ,  G02B5/28 ,  G02B5/288 ,  G01J2003/1226 ,  G01J2003/2826 ,  G02F1/213 ,  H01L27/14621 ,  H01L31/02165

Abstract: A light filter and a spectrometer including the light filter are disclosed. The light filter includes a plurality of filter units having different resonance wavelengths, wherein each of the plurality of filter units includes a cavity layer configured to output light of constructive interference, a Bragg reflection layer provided on a first surface of the cavity layer, and a pattern reflection layer provided on a second surface of the cavity layer opposite to the first surface and configured to cause guided mode resonance of light incident on the pattern reflection layer, the pattern reflection layer including a plurality of reflection structures that are periodically arranged.

公开(公告)号：US20230336846A1

公开(公告)日：2023-10-19

申请号：US17723675

申请日：2022-04-19

Applicant: United States of America as Represented by the administrator of NASA

Inventor： Stephen E. Borg ,  Hyun Jung Kim

IPC: H04N5/33 ,  G06T5/00 ,  G06T5/50 ,  G01J5/08 ,  G02F1/21

CPC classification number: H04N5/332 ,  G06T5/009 ,  G06T5/50 ,  G01J5/0859 ,  G02F1/213 ,  G06T2207/10048 ,  G06T2207/20208 ,  G06T2207/20221 ,  G01J2005/0077

Abstract: A multi-spectral imaging system utilizing tunable optics is disclosed. Various disclosed systems include a tunable optical filter coupled to a broadband imaging system. The tunable optical filter allows discrete infrared wavelengths to pass to the broadband imaging system so that monochromatic infrared images of a scene may be captured. An image processing system may process selected monochromatic infrared images by using a ratio technique to generate an emissivity-independent thermal image of the scene. The tunable optical filter may also be used to adjust a quality factor and control an amount of radiated energy that is passed to an image sensor of the broadband imaging system thereby acting as an aperture to account for both low and high radiance portions of the scene.

公开(公告)号：US20240061307A1

公开(公告)日：2024-02-22

申请号：US17888478

申请日：2022-08-16

Applicant: EIJI STEVEN YAFUSO ,  ANNIE VARGHESE

Inventor： EIJI STEVEN YAFUSO ,  ANNIE VARGHESE

IPC: G02F1/21 ,  H01L41/083 ,  H01L41/09 ,  H01L41/187

CPC classification number: G02F1/213 ,  H01L41/083 ,  H01L41/094 ,  H01L41/1875

Abstract: In one aspect, an active hyperspectral filter array includes a polished wafer comprising a d33 material, wherein the d33 piezoelectric material is configured to display a piezoelectric effect along a same axis of a directed light used to obtain a controlled modulation; wherein the polished wafer comprises: a front electrode on a front surface of the polished wafer, a back electrode on a back surface of the polished wafer, wherein the front electrode and the back electrode are configured such that an optical path length is variable by application of an appropriate electric field.

公开(公告)号：US20240047932A1

公开(公告)日：2024-02-08

申请号：US18484017

申请日：2023-10-10

Applicant: Ciena Corporation

Inventor： Claude Gamache ,  Antoine Bois ,  Marie-Josee Picard

IPC: H01S3/137 ,  G02F1/21 ,  H01S3/13 ,  H01S3/067 ,  H01S3/00

CPC classification number: H01S3/137 ,  G02F1/21 ,  H01S3/1305 ,  H01S3/06791 ,  H01S3/005 ,  G02F2201/16 ,  G02F1/212 ,  G02F1/213

Abstract: An apparatus comprises: a gain medium configured to be pumped by a pump source; a photonic integrated circuit (PIC) positioned in a laser cavity that includes the gain medium, the PIC comprising a substrate comprising silicon, a plurality of photonic structures, and one or more ports coupling an optical wave into the PIC, and coupling an optical wave out of the PIC; an optical isolator configured to limit propagation of an optical wave in a single direction through the optical isolator; and an output coupler configured to provide an output that comprises a fraction of the power of an optical wave that is incident upon the output coupler and to redirect remaining power of the optical wave around a closed path of the laser cavity, where the fraction is greater than 0.5.

公开(公告)号：US11846864B2

公开(公告)日：2023-12-19

申请号：US17471300

申请日：2021-09-10

Applicant: BOE Technology Group Co., Ltd.

Inventor： Jian Zhou ,  Nanfang Jia ,  Yidan Peng ,  Long Wang

IPC: G02F1/21 ,  G02F1/1343 ,  G02F1/09 ,  G02F1/01 ,  H04N25/11

CPC classification number: G02F1/213 ,  G02F1/0147 ,  G02F1/092 ,  G02F1/13439 ,  H04N25/11

Abstract: The present application relates to a filter module, a color filter, an image sensor and an imaging device. The filter module includes: a plurality of color filters and a control component. Each of the color filters includes: a first substrate; a metasurface structure located on the first substrate and including a plurality of microstructures periodically arranged; a dielectric layer located on a side of the metasurface structure away from the first substrate and covering the metasurface structure, wherein a refractive index of the dielectric layer is different from a refractive index of the metasurface structure; a second substrate located on a side of the dielectric layer away from the first substrate. The control component is configured to adjust the refractive index of the dielectric layer so as to adjust wavelengths of visible light passing through the color filter.

公开(公告)号：US20230341743A1

公开(公告)日：2023-10-26

申请号：US17779669

申请日：2019-09-25

Applicant: SHENZHEN HYPERNANO OPTICS TECHNOLOGY CO., LTD

Inventor： BIN GUO

IPC: G02F1/21

CPC classification number: G02F1/213 ,  G02F2203/055

Abstract: A tunable optical filter device. The device comprises a first substrate (101) provided with a first reflective structure (106) and a thin film (103) provided with a second reflective structure (107), the outer peripheries of the surfaces of the first substrate (101) and the thin film (103) having the reflective structures are mutually bonded by means of bonding compounds (102) so as to form a cavity between the reflective structures, and a piezoelectric thin film structure (108) is provided on a surface of the thin film (103) at the cavity side. The tunable optical filter device can avoid a pull-in effect caused by capacitor driving, thereby improving the movable range of the thin film (103), and correspondingly expanding the tunable range of the spectrum of the Fabry-Perot cavity; in addition, the tunable optical filter device can be applied to a device with a limited size, such as a micro spectrometer, a miniaturized or even a mini-hyperspectral camera or a mobile phone.

公开(公告)号：US12092939B2

公开(公告)日：2024-09-17

申请号：US17784518

申请日：2020-12-11

Applicant: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO

Inventor： Anna Tchebotareva ,  Peter Johan Harmsma

IPC: G02F1/21 ,  G02F1/225 ,  H04B10/70

CPC classification number: G02F1/213 ,  G02F1/225 ,  H04B10/70

Abstract: The spin-entangled photon emission device comprises a Fabry-Pérot resonator with a solid state optical waveguide integrated on a substrate. Preferably, the device is used in a configuration that makes it possible to tune the resonance wavelength of the Fabry-Pérot resonator by straining or otherwise adjusting the effective optical length of the waveguide. A diamond membrane is located in the Fabry-Pérot resonator. The diamond membrane comprises a photon-source capable of emitting a photon that is entangled with a spin state of the photon source. A first surface of the diamond membrane abuts to a first mirror of the Fabry-Pérot resonator. The optical waveguide has a first end facet bonded to a first surface of the diamond membrane. The first mirror of the Fabry-Pérot resonator is formed by a reflector on the second surface of the diamond membrane. The second mirror of the Fabry-Pérot resonator is formed by a reflector on a second end facet of the optical waveguide or inside the optical waveguide.

公开(公告)号：US20240004257A1

公开(公告)日：2024-01-04

申请号：US18346584

申请日：2023-07-03

Applicant: COMMISSARIAT À L’ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Ujwol PALANCHOKE ,  Sébastien BERARD-BERGERY ,  Stefan LANDIS

IPC: G02F1/21

CPC classification number: G02F1/213 ,  G02F2203/055 ,  G02F2201/34

Abstract: A multispectral filter matrix for an electromagnetic wave, the matrix including at least a first and a second optoelectronic element, each optoelectronic element including a colour filter and a photoelectric transducer facing the filter, each colour filter forming a Fabry-Perot cavity including a first reflective layer, a second reflective layer and a Fabry-Perot cavity layer of dielectric material between the first reflective layer and the second reflective layer, the layer of dielectric material including a lower surface, in contact with the first reflective layer; the lower surface being curved, an upper surface in contact with the second reflective layer, the upper surface being curved, the average thicknesses of the two layers of dielectric material of the two filters being different.

公开(公告)号：US11835388B2

公开(公告)日：2023-12-05

申请号：US16843244

申请日：2020-04-08

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Masaki Hirose ,  Katsumi Shibayama ,  Takashi Kasahara ,  Toshimitsu Kawai ,  Hiroki Oyama ,  Yumi Teramachi

IPC: G01J5/08 ,  G01J3/26 ,  G02B26/00 ,  G01J3/02 ,  G01J5/0802 ,  G01J5/20 ,  G02F1/21 ,  H01L31/02 ,  H01L31/0203 ,  H01L31/0232 ,  H01L31/0304 ,  G01J5/04 ,  H10N15/10

CPC classification number: G01J3/26 ,  G01J3/0213 ,  G01J3/0256 ,  G01J3/0291 ,  G01J5/0802 ,  G01J5/20 ,  G02B26/00 ,  G02F1/21 ,  H01L31/0203 ,  H01L31/02005 ,  H01L31/02327 ,  H01L31/03046 ,  G01J5/045 ,  G02F1/213 ,  H10N15/10

Abstract: A light detection device includes: a Fabry-Perot interference filter provided with a light transmission region; a light detector configured to detect light transmitted through the light transmission region; a package having an opening and accommodating the Fabry-Perot interference filter and the light detector; and a light transmitting unit arranged on an inner surface of the package so as to close an opening, the light transmitting unit including a band pass filter configured to transmit light incident on the light transmission region. When viewed from a direction parallel to the line, an outer edge of the Fabry-Pert interference filter is positioned outside an outer edge of the opening, and an outer edge of the light transmitting unit is positioned outside the outer edge of the Fabry-Perot interference filter.