Title:
FILTER FRAME FOR CAMERA AND FILTER UNIT FOR CAMERA
Document Type and Number:
WIPO Patent Application WO/2018/163754
Kind Code:
A1
Abstract:
This filter frame (10) for a camera has: a front-side ring (4) for holding a first polarization filter (2) on the inner peripheral side thereof; a rear-side ring (5) disposed concentrically and behind the front-side ring (4), and capable of rotatably holding the front-side ring (4); and a rotation angle range-regulating mechanism (58) for regulating the angular range for the relative rotation of the front-side ring (4) and the rear-side ring (5). The rotation angle range-regulating mechanism (58) is provided with: a protruding portion (16) provided on the rear-facing annular surface (33) of the front-side ring (4); and a circular arc groove (17) which is provided in the front-facing annular surface (56) of the rear-side ring (5), and into which the protruding portion (16) is inserted. When the protruding portion (16) is positioned at an end of the circular arc groove (17), the relative rotational angle position of the front-side ring (4) and the rear-side ring (5) can be regulated.
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Inventors:
KOBAYASHI HIDEO (JP)
Application Number:
PCT/JP2018/005382
Publication Date:
September 13, 2018
Filing Date:
February 16, 2018
Export Citation:
Assignee:
KK TSUSO (JP)
International Classes:
G03B11/00; G02B5/30
Domestic Patent References:
| WO2016121427A1 | 2016-08-04 |
Foreign References:
| JP2016004104A | 2016-01-12 | |||
| JPH0821942A | 1996-01-23 | |||
| JP2002023035A | 2002-01-23 |
Attorney, Agent or Firm:
KAWAI Toru et al. (JP)
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