Title:
フィルタおよび光量絞り装置
Document Type and Number:
Japanese Patent JP4199466
Kind Code:
B2
Inventors:
Yoshio Kawakami
Application Number:
JP2002058947A
Publication Date:
December 17, 2008
Filing Date:
March 05, 2002
Export Citation:
Assignee:
Canon Electronics Inc.
International Classes:
G03B7/085; G03B9/02; G02B5/00; G03B9/04; G03B11/00
Domestic Patent References:
| JP10133253A | ||||
| JP2001339575A | ||||
| JP10133254A | ||||
| JP2000147589A | ||||
| JP11190866A | ||||
| JP7063915A |
Attorney, Agent or Firm:
Hiroyuki Niwa
Tadao Noguchi
Tadao Noguchi