Title:
カメラ用フィルター枠およびカメラ用フィルターユニット
Document Type and Number:
Japanese Patent JP6590448
Kind Code:
B2
Abstract:
A camera filter unit (10) includes a front ring (4) for holding a polarization filter (2) and a rear ring (5) for rotatably holding the front ring (4). The front ring (4) includes a rear annular wall portion (18) extending in a radial direction (R), a rear annular plate portion (19) extending rearward from the inner peripheral end of the rear annular wall portion (18), and an annular projection portion (20) projecting for a short distance from the rear end of the rear annular plate portion (19) toward the outer peripheral side. The rear annular wall portion (18), the rear annular plate portion (19), and the annular projection portion (20) form an annular recess (21) on the outer peripheral surface of the front ring (4). The rear ring (5) includes an annular protrusion (45) protruding to the inner peripheral side. The annular protrusion (45) is inserted into the annular recess (21) of the front ring (4).
Inventors:
Hideo Kobayashi
Application Number:
JP2017197628A
Publication Date:
October 16, 2019
Filing Date:
October 11, 2017
Export Citation:
Assignee:
Toso Co., Ltd.
International Classes:
G03B11/00
Domestic Patent References:
| JP2010113016A | ||||
| JP2013178443A | ||||
| JP2014192826A | ||||
| JP2011248115A | ||||
| JP2007264115A | ||||
| JP2013210681A | ||||
| JP2011043653A | ||||
| JP3189043U | ||||
| JP2005301172A |
Foreign References:
| WO2016121427A1 | ||||
| WO2014190634A1 |
Attorney, Agent or Firm:
Toru Kawai
Kawaguchi Nobuko
Kawaguchi Nobuko