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Title:
VELOCITY MEASUREMENT DEVICE AND VELOCITY MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2023/228494
Kind Code:
A1
Abstract:
This velocity measurement device comprises: a both-sided telecentric lens 4 for receiving reflected light from a moving object 10 to be measured; a spatial filter 50 disposed so as to be inclined with respect to an image plane from the reflected light that has passed through the both-sided telecentric lens 4; and a travel velocity calculation unit 302 for calculating the travel velocity of the object to be measured on the basis of the frequency of a signal obtained by spatially filtering the reflected light by means of the spatial filter 50.

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Inventors:
FURUYA MASASHI (JP)
Application Number:
PCT/JP2023/006057
Publication Date:
November 30, 2023
Filing Date:
February 20, 2023
Export Citation:
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Assignee:
AZBIL CORP (JP)
International Classes:
G01P3/36
Domestic Patent References:
WO2015068301A12015-05-14
WO1995001549A11995-01-12
Foreign References:
JP2001289866A2001-10-19
JPS5268433A1977-06-07
CN106093454A2016-11-09
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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