Title:
MEASUREMENT DEVICE, MEASUREMENT SYSTEM, METHOD FOR MEASUREMENT, AND PROGRAM
Document Type and Number:
Japanese Patent JP2023148812
Kind Code:
A
Abstract:
To provide a measurement device that can automatically detect dirt on a protection part of a light reception element.SOLUTION: A measurement device (100) includes: a first light reception element (110a) and a second light reception element (100b); protection parts (111a and 111b) for protecting the first light reception element and the second light reception element; an acquisition unit (120) for acquiring a first pixel value and a second pixel value obtained by receiving light by the first and second light reception elements through the protection part; a calculation unit (130) for calculating a difference between the first pixel value and the second pixel value; and a determination unit (140) for comparing the difference with a threshold value α.SELECTED DRAWING: Figure 3
Inventors:
KAMIKAWA TOMOHISA
Application Number:
JP2022057052A
Publication Date:
October 13, 2023
Filing Date:
March 30, 2022
Export Citation:
Assignee:
CANON KK
International Classes:
G01J1/00; G01J1/04; H04N23/76
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Tomoya Hirayama
Atsuya Mizumoto
Tomoya Hirayama