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Patent Searching and Data


Title:
APERTURE DEVICE FOR PROJECTOR
Document Type and Number:
Japanese Patent JP2010038991
Kind Code:
A
Abstract:

To provide an aperture device for a projector having excellent durability, in which two aperture members are suitably turned in double door fashion by two electromagnetic actuators which are so arranged that the turning shafts of rotors are parallel to each other.

The aperture member 16 is turnably mounted on shaft members 8, 12 via a unit of matchmaking members 20, 21, and the aperture member 17 is turnably mounted on shaft members 9, 13 via a unit of matchmaking members 18, 19. The electromagnetic actuators AC1, AC2 are mounted on a plate-shaped part 1a, output pins 33b, 25c integrated with the rotor are penetrated through the inner face side of the plate-shaped part 1a and inserted into a long hole formed on the matchmaking members 20, 18 and a long hole formed on the mounting pieces 16e, 17e of the aperture members 16, 17, and the aperture members 16, 17 are turned by the simultaneous turning of the rotors into opposite directions.


Inventors:
Usuda, Yuichiro
Takahashi, Shigemi
Application Number:
JP2008000198730
Publication Date:
February 18, 2010
Filing Date:
July 31, 2008
Export Citation:
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Assignee:
NIDEC COPAL CORP
International Classes:
G02B26/02; G03B9/02; G03B21/14