Title:
MEASUREMENT DEVICE
Document Type and Number:
Japanese Patent JP2017078611
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a measurement device with which the uniformity of distance measurement accuracy in a direction of an object is enhanced.SOLUTION: The measurement device comprises: a mirror unit 142 in which an angle formed by an outgoing light from a light source and a reflection measurement light of the outgoing light oscillates centering round an oscillation axis 146 in a range from a maximum angle to a minimum angle; a light-receiving element 160 for receiving a reflected light 161 of the reflection measurement light from a measurement object via the mirror unit 142; and a light-receiving optical unit 150a located on a light-receiving optical axis linking the mirror unit 142 having a prescribed mirror width in a direction perpendicular to the oscillation axis 146 and the light-receiving element 160, the light-receiving optical unit 150a having a light shielding member 151 as a received light limiting unit for limiting the amount of transmitted light with a smaller limit width than the projected dimension in the direction of the light-receiving optical axis of the mirror width when the angle is a minimum angle.SELECTED DRAWING: Figure 7
Inventors:
HIRAI TOMOHISA
Application Number:
JP2015205993A
Publication Date:
April 27, 2017
Filing Date:
October 20, 2015
Export Citation:
Assignee:
FUNAI ELECTRIC CO
International Classes:
G01S7/481; G01B11/00; G01C3/06
Attorney, Agent or Firm:
Junichi Omata
Seiji Mito
Seiji Mito