Title:
APERTURE DEVICE FOR PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2010/038731
Kind Code:
A1
Abstract:
When a rotation member is rotated clockwise by a stepping motor, one main operation member is rotated counterclockwise through a link member and the other main operation member is rotated clockwise by said main operation member through the link member. Also, one sub operation member is rotated counterclockwise by said main operation member through the link member, and the other sub operation member is rotated clockwise by the other main operation member through the link member. This causes the amount of overlap between a main split blade mounted to said main operation member and a sub split blade mounted to said sub operation member to be increased and also causes the amount of overlap between a main split blade mounted to the other main operation member and a sub split blade mounted to the other sub operation member to be also increased. As a result, the aperture opening formed between the two main split blades is increased.
Inventors:
USUDA, Yuichirou (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
臼田 祐一郎 (〒50 東京都板橋区志村２丁目１８番１０号 日本電産コパル株式会社内 Tokyo, 〒1748550, JP)
臼田 祐一郎 (〒50 東京都板橋区志村２丁目１８番１０号 日本電産コパル株式会社内 Tokyo, 〒1748550, JP)
Application Number:
JP2009/066929
Publication Date:
April 08, 2010
Filing Date:
September 29, 2009
Export Citation:
Assignee:
NIDEC COPAL CORPORATION (18-10, Shimura 2-chome Itabashi-ku Tokyo, 50, 〒1748550, JP)
日本電産コパル株式会社 (〒50 東京都板橋区志村２丁目１８番１０号 Tokyo, 〒1748550, JP)
USUDA, Yuichirou (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
日本電産コパル株式会社 (〒50 東京都板橋区志村２丁目１８番１０号 Tokyo, 〒1748550, JP)
USUDA, Yuichirou (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
International Classes:
G03B21/14; G03B9/02
Attorney, Agent or Firm:
SHINOHARA, Taiji (7-14, Kudan-minami 3-chome Chiyoda-k, Tokyo 74, 〒1020074, JP)