公开(公告)号：US20250102358A1

公开(公告)日：2025-03-27

申请号：US18884192

申请日：2024-09-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo DOUGAKIUCHI

IPC: G01J3/18 ,  G01J3/02 ,  G01J3/04 ,  G01J3/10 ,  G01J3/26

Abstract: A spectroscopic analyzer according to an embodiment includes: a Fabry-Perot QCL element configured to emit a laser light including a plurality of mode lights respectively corresponding to a plurality of modes indicating a discrete oscillation spectrum; a diffraction grating configured to disperse the laser light emitted from the QCL element into the plurality of mode lights; and a light detector configured to detect the mode light dispersed by the diffraction grating and then transmitted through a sample.

公开(公告)号：US12253413B2

公开(公告)日：2025-03-18

申请号：US17288593

申请日：2019-08-23

Applicant: HAMAMATSU PHOTONICS K.K.

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

IPC: G01J3/26 ,  G01J1/04 ,  G01J5/28 ,  G02B5/28

Abstract: A spectroscopic sensor includes a wiring substrate having a main surface, a light detector disposed on the main surface of the wiring substrate, a Fabry-Perot interference filter, a spacer which is provided on the main surface of the wiring substrate and supports the Fabry-Perot interference filter so that the Fabry-Perot interference filter and the light detector are separated from each other, and a stem connected to a ground potential. A second current path which has a smaller electric resistance than that of an arbitrary first current path which extends from the Fabry-Perot interference filter to the light detector via the spacer and the wiring substrate is formed between the Fabry-Perot interference filter and the stem.

公开(公告)号：US20250076573A1

公开(公告)日：2025-03-06

申请号：US18487567

申请日：2022-04-19

Applicant: The Regents of the University of California

Inventor： Sung-Joo Ben Yoo

IPC: G02B6/12 ,  G01J3/02 ,  G01J3/18 ,  G01J3/26 ,  G01J3/28 ,  H04N23/16

Abstract: One embodiment provides a compressive hyperspectral imaging system. The compressive hyperspectral imaging system can include a coded aperture configured to spatially encode an optical signal associated with a scene, an integrated photonic device configured to disperse the spatially encoded optical signal, and an array of photo detectors configured to detect the dispersed and spatially encoded optical signal. The output of the array of photo detectors is used for reconstruction of a hyperspectral image corresponding to the scene.

公开(公告)号：US12243887B2

公开(公告)日：2025-03-04

申请号：US17247589

申请日：2020-12-17

Applicant: VIAVI Solutions Inc.

Inventor： Georg J. Ockenfuss

IPC: H01L27/146 ,  G01J1/04 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01J3/36 ,  G01J5/02 ,  G01J5/0802 ,  G01J5/0808 ,  G01J5/0831 ,  G02B5/20 ,  G02B5/26 ,  G02B5/28 ,  H01L31/0216

Abstract: A device may include a filter array disposed on a substrate. The filter array may include a first mirror disposed on the substrate. The filter array may include a plurality of spacers disposed on the first mirror. A first spacer, of the plurality of spacers, may be associated with a first thickness. A second spacer, of the plurality of spacers, may be associated with a second thickness that is different from the first thickness. A first channel corresponding to the first spacer and a second channel corresponding to the second spacer may be associated with a separation width of less than approximately 10 micrometers (μm). The filter array may include a second mirror disposed on the plurality of spacers.

公开(公告)号：US12241782B2

公开(公告)日：2025-03-04

申请号：US18083074

申请日：2022-12-16

Applicant: HAMAMATSU PHOTONICS K.K.

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

IPC: H01L21/67 ,  B65D85/48 ,  G01J3/26 ,  G02B26/00 ,  G02B26/02 ,  H01L21/673 ,  H01L21/677

Abstract: A transportation method for transporting an object including a plurality of Fabry-Perot interference filters, the transportation method including a first step of accommodating the object in an accommodating container, wherein the Fabry-Perot interference filter includes a substrate, a first mirror portion and a second mirror portion provided on the substrate to face each other via a gap and in which a distance from each other is variable, and in the first step, the object is accommodated and supported in the accommodating container in a state where the plurality of Fabry-Perot interference filters is two-dimensionally arranged.

公开(公告)号：US20240426660A1

公开(公告)日：2024-12-26

申请号：US18749191

申请日：2024-06-20

Applicant: California Institute of Technology

Inventor： Goutam Chattopadhyay ,  Sven L. Van Berkel ,  Subash Khanal ,  Conner K. Ballew

IPC: G01J3/02 ,  B82Y20/00 ,  B82Y40/00 ,  G01J3/26 ,  G02B1/00

Abstract: A device including a stack of silicon meta-optical layers forming a meta-material comprising an input surface for receiving terahertz electromagnetic radiation, an output surface for outputting a plurality of beams of the electromagnetic radiation; and a spatially varying permittivity varying with sub-wavelength precision across a volume of the stack, wherein the spatially varying permittivity is configured to focus different spectral bands of the electromagnetic radiation into different spatially separated electromagnetic modes.

公开(公告)号：US20240418981A1

公开(公告)日：2024-12-19

申请号：US18813478

申请日：2024-08-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Tomonori MATSUSHITA ,  Nozomu HIROKUBO

IPC: G02B26/00 ,  G01J3/02 ,  G01J3/06 ,  G01J3/10 ,  G01J3/26 ,  G01J3/28 ,  G01J3/32 ,  G01J3/42 ,  G01J3/50

Abstract: An optical module includes a wavelength variable interference filter having a fixed reflective film, a movable reflective film which faces the fixed reflective film with a gap between reflective films interposed therebetween, and an electrostatic actuator that changes the gap between reflective films, and a gap control unit that controls the electrostatic actuator. The gap control unit controls the electrostatic actuator on the basis of an order which is set in accordance with a wavelength to be measured, and changes the gap between the reflective films.

公开(公告)号：US12163835B2

公开(公告)日：2024-12-10

申请号：US17299908

申请日：2019-12-17

Applicant: ams Sensors Singapore Pte. Ltd.

Inventor： Javier Miguel Sánchez

IPC: G01J3/02 ,  G01J3/12 ,  G01J3/26 ,  G01J3/45

Abstract: In an example method, light is emitted towards a sample region, and sample light is received at an interferometer. A subset of the sample light is transmitted from the interferometer to a detector. Transmitting the subset of the sample light includes determining a reference voltage corresponding to the range of wavelengths of the subset of sample light, and a reference temperature. Transmitting the subset of sample light also includes determining a temperature of an environment, determining a bias voltage corresponding to a difference between the reference temperature and the temperature of the environment, and applying, to the interferometer, an input voltage corresponding to the sum of the reference voltage and the bias voltage. The subset of the sample light is measured by the detector, and a spectral distribution of light is determined based on the measurements.

公开(公告)号：US12147030B2

公开(公告)日：2024-11-19

申请号：US17317059

申请日：2021-05-11

Applicant: II-VI Delaware, Inc

Inventor： Jiang-Huai Zhou ,  Glenn D Bartolini

IPC: G02B26/08 ,  G01J3/26 ,  G02B7/188 ,  G02B26/00 ,  G02B26/02

Abstract: An optoelectronic device, including a tunable optical filter or tunable optical filter with photodiode, uses voltage differentials to filter an optical signal passing along an optical path. A membrane has an electrode and is disposed adjacent a fixed mirror and another. A central portion of the membrane is distanced from the fixed mirror and has an aperture in which a second mirror is disposed. This second mirror translates with the membrane at a freespace gap relative to the fixed mirror when the electrodes are subject to the voltage differentials. In turn, the freespace gap is configured as a Fabry-Perot etalon to pass one or more spectral frequencies of the optical signal along the optical path. The membrane is shaped and reinforced to limit possible bowing. The translatable mirror in the aperture of the membrane is also shaped and reinforced to limit it from possible bowing as well.

公开(公告)号：US20240377255A1

公开(公告)日：2024-11-14

申请号：US18779491

申请日：2024-07-22

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Masaki HIROSE ,  Katsumi SHIBAYAMA ,  Takashi KASAHARA ,  Toshimitsu KAWAI ,  Hiroki OYAMA

IPC: G01J3/26 ,  G01J1/04 ,  G01J3/02 ,  G01J3/45 ,  G02B26/00 ,  G02F1/21

Abstract: A light detection device includes a Fabry-Perot interference filter provided with a light transmitting region on a predetermined line, a light detector disposed on one side with respect to the Fabry-Perot interference filter on the line, a package having an opening positioned on the other side with respect to the Fabry-Perot interference filter on the line, a light transmitting member provided in the package such that the opening is blocked, and a temperature control element having an endothermic region thermally connected to the Fabry-Perot interference filter and the light detector. The endothermic region is positioned on one side with respect to the light detector on the line.