Title:
OPTICAL UNIT
Document Type and Number:
Japanese Patent JP2021184065
Kind Code:
A
Abstract:
To provide an optical unit in which the displacement of an optical axis can be suppressed with a simple structure.SOLUTION: An optical unit 100 includes: an optical element 110 that has a reflection surface for reflecting light in a first axis direction; a holder 120 that holds the optical element; a case 130 that supports the holder in a manner of being able to oscillate; a first oscillation mechanism that oscillates the holder around a first oscillation axis with respect to the case; and a second oscillation mechanism that oscillates the holder around a second oscillation axis orthogonal to the first oscillation axis with respect to the case. The holder includes a first convex part 125 and a second convex part 126. The case includes: a first concave part for housing at least a part of the first convex part; and a second concave part for housing at least a part of the second convex part. Each of the first concave part and the second concave part includes: a first side surface existing on one side in an axial direction of the second oscillation axis with respect to the convex part; and a second surface existing on the other side and connecting to the first side surface. In each of the first concave part and the second concave part, at least one of the first side surface and the second side surface includes a tilt surface that tilts with respect to the second oscillation axis.SELECTED DRAWING: Figure 6
Inventors:
IWASE NORIYUKI
EGAWA TOMOHIRO
OTSUBO KYOJI
SASEI KAZUHIRO
TANAKA MOTONORI
EGAWA TOMOHIRO
OTSUBO KYOJI
SASEI KAZUHIRO
TANAKA MOTONORI
Application Number:
JP2020089925A
Publication Date:
December 02, 2021
Filing Date:
May 22, 2020
Export Citation:
Assignee:
NIHON DENSAN KK
International Classes:
G03B5/00; G02B7/18; H04N5/225; H04N5/232