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US 7,029,131 B2Granted
Projector apparatus
AssigneeNEC Viewtechnology, Ltd.
InventorKunitaka Furuichi
Life of this patent
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Abstract
There is provided a projector apparatus having an image forming optical system including a plate fixed to a housing, and a plurality of reflecting mirrors attached to the plate through respective holding members. The material of the reflecting mirrors, and the materials of the plate and the holding members have approximately equal coefficients of linear expansion. Sliding means is provided at a contact point between the housing and the plate for releasing an excessive force generated at the contact point.
Claims6
A projector apparatus comprising:
- a housing;
- a light source apparatus arranged in said housing;
- an image forming element which forms an image for projection;
- a plate fixed to said housing;
- an image forming optical system including a reflecting mirror attached to said plate through a holding member;
- and
- sliding means that relieves an excessive force acting on a contact point between said plate and said housing by generating a slide between said plate and said housing.
4 more elements
Dependencies are inferred from the claim text.