Title:
MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/070998
Kind Code:
A1
Abstract:
This measuring device comprises a distance measurement light emitting unit (23) for emitting distance measurement light (32) toward a measurement target object, a distance measurement light receiving unit (24) including a light receiving element (34) for receiving reflected distance measurement light (39) from the measurement target object, and an arithmetic control unit for controlling the distance measurement light emitting unit and for calculating a distance to the measurement target object on the basis of a light reception result of the reflected distance measurement light with respect to the light receiving element, wherein: the distance measurement light receiving unit includes a wavelength selecting unit (35) provided on an optical axis of the reflected distance measurement light; and the wavelength selecting unit includes a wavelength-selective film having a film thickness that increases in accordance with an increase in an angle of incidence of the reflected distance measurement light with respect to the wavelength selecting unit.
Inventors:
YUASA TAICHI (JP)
Application Number:
PCT/JP2023/034630
Publication Date:
April 04, 2024
Filing Date:
September 25, 2023
Export Citation:
Assignee:
TOPCON CORP (JP)
International Classes:
G01C15/00; G02B5/20
Domestic Patent References:
| WO2012132087A1 | 2012-10-04 |
Foreign References:
| JP2003344650A | 2003-12-03 | |||
| JP2012154642A | 2012-08-16 | |||
| JP2016186539A | 2016-10-27 |
Attorney, Agent or Firm:
MIYOSHI Shoji (JP)
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