Title:
OPTICAL DETECTOR AND SPECTROSCOPIC MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/228451
Kind Code:
A1
Abstract:
This optical detector detects a primary light ray among light rays to be measured that are spectrally separated in an X-axis direction. The optical detector comprises a package with an opening, a window portion that covers the opening and allows the primary light ray to pass therethrough, and an optical detection element positioned inside the package, having a light-receiving region opposing the window portion, and detecting the primary light ray. The light-receiving region includes a plurality of optical detection channels arranged in the X-axis direction. The window portion includes an optical transmission member having a light incident surface and a light exit surface, and a linear variable filter coating that is formed on one of the light incident surface and the light exit surface, and has a transmission wavelength changing along the X-axis direction.
Inventors:
OHTSUKA KENICHI (JP)
ARATA IKUO (JP)
ARATA IKUO (JP)
Application Number:
PCT/JP2022/046728
Publication Date:
November 30, 2023
Filing Date:
December 19, 2022
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
International Classes:
G01J3/02; G01J1/04; G01J3/18; G01J3/36; H01L31/02
Foreign References:
| JPH05240700A | 1993-09-17 | |||
| JPH05240701A | 1993-09-17 | |||
| JPH05240710A | 1993-09-17 | |||
| JP2020520467A | 2020-07-09 | |||
| JP2014153360A | 2014-08-25 | |||
| JPS5713328A | 1982-01-23 | |||
| JP2021177158A | 2021-11-11 | |||
| JP2011033514A | 2011-02-17 | |||
| JP2020076712A | 2020-05-21 | |||
| CN102175324A | 2011-09-07 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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