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Patent Searching and Data


Title:
LIGHT QUANTITY ADJUSTMENT DEVICE AND OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/119277
Kind Code:
A1
Abstract:
This light quantity adjustment device comprises: a light path forming member, further comprising an aperture part which forms a light path; a plurality of light quantity adjustment members which adjust the quantity of light which passes through the aperture part; and a plurality of movement means for linearly advancing and retracting the light quantity adjustment members upon the aperture part.

Inventors:
SATO, Osamu (1248 Shimokagemori, Chichibu-sh, Saitama 92, 〒3691892, JP)
MIYASHITA, Kyousuke (1248 Shimokagemori, Chichibu-sh, Saitama 92, 〒3691892, JP)
Application Number:
JP2014/000398
Publication Date:
August 07, 2014
Filing Date:
January 27, 2014
Export Citation:
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Assignee:
CANON DENSHI KABUSHIKI KAISHA (1248, Shimokagemori Chichibu-sh, Saitama 92, 〒3691892, JP)
International Classes:
G03B11/00; G02B5/00; G03B9/02
Foreign References:
JP2002176573A2002-06-21
JP2012003128A2012-01-05
JP2002182263A2002-06-26
JP2002176573A2002-06-21
Other References:
See also references of EP 2952959A4
Attorney, Agent or Firm:
OHTSUKA, Yasunori et al. (7th Fl, Kioicho Park Bldg. 3-6, Kioicho, Chiyoda-k, Tokyo 94, 〒1020094, JP)
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