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Match Document Document Title
7338174 Shutter device and projection type video display  
Each shading plate comprises a rotating shaft and a driving shaft arranged vertically. First divided shading plate is loosely fitted to and supported by (not adhere to) the rotating shaft and...
7182470 Light amount control apparatus and projector apparatus using the same  
A light amount control apparatus includes a pair of light amount control plates arranged at side edge portions of a light path, a driving device having a drive rotating shaft, and a transmitting...
Matches 1 - 2 out of 2