Title:
光学装置
Document Type and Number:
Japanese Patent JP7087541
Kind Code:
B2
Abstract:
To provide a configuration that enables alignment of a plurality of lenses to be excellently held even if a change in irradiation of direct sunlight or sudden ambient temperature and the like occur.SOLUTION: An optical device (1) comprises: a lens barrel unit (4); and a plurality of lenses (5). The plurality of lenses are arrayed on an optical axis (AX). The lens barrel unit has: an inner barrel part (41); an external barrel part (42); and a joint part (43). The inner barrel part is configured to abut with an external rim part in each of the plurality of lenses to thereby hold each of the plurality of lenses. The external barrel part is arranged facing the inner barrel part in a radial direction (D) orthogonal to the optical axis and radially extending from the optical axis, across a gap (44) constituting a thermal insulation layer. The joint part is configured to joint end parts themselves of the inner barrel part and the external barrel part in an axis direction parallel with the optical axis. The gap is formed into a barrel with a barrel length (BL) in the axis direction. The plurality of lenses are arranged within the barrel length as to the axis direction.SELECTED DRAWING: Figure 2
Inventors:
Koji Sato
Kazuhiro Aoyama
Kazuhiro Aoyama
Application Number:
JP2018058987A
Publication Date:
June 21, 2022
Filing Date:
March 26, 2018
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F16L59/065; G02B7/02
Domestic Patent References:
| JP2009080187A | ||||
| JP2004304145A | ||||
| JP9102915A | ||||
| JP2005084367A | ||||
| JP5099673A |
Foreign References:
| WO2007043509A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Yuai Patent Office
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