Title:
レンズ保持部材及び画像投影装置
Document Type and Number:
Japanese Patent JP7129818
Kind Code:
B2
Abstract:
To provide a lens holding member that reduces the number of components and allows fine tuning after lenses are mounted.SOLUTION: A lens holding member comprises: a first lens barrel 21 and a second lens barrel 22 that each hold a lens; a first rotating member 11 that is rotatable on the central axis of the lens; a second rotating member 12 that is rotatable independent of the first rotating member 11; and a holding member 50 that holds the first rotating member 11 and second rotating member 12 with respect to the first lens barrel 21 and second lens barrel 22 rotatably on the central axis. The first rotating member 11 and second rotating member 12 are arranged on the opposite sides to each other across the holding member 50 in the direction of the central axis; the first rotating member 11 and the second rotating member 12 have first surfaces facing an inner peripheral surface of the holding member 50 and have second surfaces facing the first lens barrel 21 and the second lens barrel 22; the first surface and the second surface are formed eccentrically, and the first rotating member 11 and second rotating member 12 are arranged such that the directions of eccentricity are shifted by 90 degrees.SELECTED DRAWING: Figure 4
Inventors:
Kenichi Sato
Daisuke Kanazawa
Go Odashima
Daisuke Kanazawa
Go Odashima
Application Number:
JP2018089395A
Publication Date:
September 02, 2022
Filing Date:
May 07, 2018
Export Citation:
Assignee:
Ricoh Industrial Solutions Inc.
International Classes:
G02B7/02; G03B21/00; G03B21/14
Domestic Patent References:
| JP3164708A | ||||
| JP2002323648A | ||||
| JP54058040A | ||||
| JP2003149521A | ||||
| JP2011033885A | ||||
| JP2002048961A | ||||
| JP2012132995A |
Foreign References:
| US20090141371 | ||||
| US20120154926 |
Attorney, Agent or Firm:
Shuichi Kudo
Shogo Honda
Shogo Honda