公开(公告)号：US20240332326A1

公开(公告)日：2024-10-03

申请号：US18740259

申请日：2024-06-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Atsushi ISHIKAWA ,  Yasuhisa INADA

IPC: H01L27/146 ,  G01J3/26 ,  G01J3/28 ,  G01J3/36 ,  G02B5/20 ,  G02B5/28 ,  H04N25/13

CPC classification number: H01L27/1462 ,  G01J3/26 ,  G01J3/2823 ,  G01J3/36 ,  G02B5/201 ,  G02B5/28 ,  H01L27/14627 ,  H01L27/14645 ,  H04N25/135

Abstract: A light detecting device includes: a filter array including filters two-dimensionally arrayed and an image sensor including light detection elements. Each of first and second filters included in the filters includes a first reflective layer, a second reflective layer, and an intermediate layer therebetween and has a resonance structure having resonant modes whose orders are different from each other. A refractive index and/or a thickness of the intermediate layer in the first and second filters is different depending on the filter. A transmission spectrum of each of the first and second filters has local maximum value of transmittance at each of wavelengths included in a wavelength region, and the wavelengths correspond to the resonant modes, respectively. The image sensor is disposed at a position where the image senor receives passing light that passes through the filter array, to detect components in the wavelengths included in the passing light.

公开(公告)号：US20230027122A1

公开(公告)日：2023-01-26

申请号：US17944802

申请日：2022-09-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuhisa INADA ,  Atsushi ISHIKAWA ,  Yumiko KATO

IPC: G02F1/133 ,  G02B6/12 ,  G02B6/293 ,  G02B6/35

Abstract: An optical scan device includes an optical waveguide array, including a plurality of optical waveguides each of which propagates light along a first direction, that emits a light beam, the plurality of optical waveguides being arranged in a second direction that intersects the first direction, a phase shifter array including a plurality of phase shifters connected separately to each of the plurality of optical waveguides, a control circuit that controls a phase shift amount of each of the plurality of phase shifters and/or inputting of light to each of the plurality of phase shifters and thereby controls a direction and shape of the light beam that is emitted from the optical waveguide array, a photodetector that detects the light beam reflected by a physical object, and a signal processing circuit that generates distance distribution data on the basis of output from the photodetector.

公开(公告)号：US20250155286A1

公开(公告)日：2025-05-15

申请号：US19023932

申请日：2025-01-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuhisa INADA ,  Atsushi ISHIKAWA

IPC: G01J3/28 ,  G01J3/12 ,  G02B5/20 ,  G02B5/28 ,  H04N23/80

Abstract: An optical filter includes a filter array including filters two-dimensionally arrayed and a band-pass filter. The filters includes first and second filters. A transmission spectrum of each of the first and second filters has local maximum values of transmittance at three or more wavelengths included in a first wavelength region. The band-pass filter passes light in a second wavelength region including two or more wavelengths of the three or more wavelengths and not including one or more wavelengths of the three or more wavelengths. The filter array and the band-pass filter are disposed so that (a) the band-pass filter is located on an optical path of light that passes through the first and second filters or (b) the first and second filters are located on an optical path of light that passes through the band-pass filter.