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US 2021/0333700 A1Published application
Projection optical apparatus and projector
AssigneeSeiko Epson Corporation
InventorTakahiro TAKIZAWA
Life of this patent
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Abstract
A projection optical apparatus includes a projection system including a first reflector and a lens barrel accommodating the projection system. The lens barrel includes a frame including a flange and accommodating the projection system and a holder holding the first reflector. The holder has a holding surface holding the first reflector and an extension part extending from the holding surface in a direction that intersects the holding surface, the extension part being fitted to the flange. The holder differs from the frame in terms of material.
Claims11
A projection optical apparatus comprising:
- a projection system including a first reflector;
- and
- a lens barrel accommodating the projection system,
- wherein the lens barrel includes
- a frame including a flange and accommodating the projection system and
- a holder holding the first reflector, the holder has
- a holding surface holding the first reflector and
- an extension part extending from the holding surface in a direction that intersects the holding surface, the extension part being fitted to the flange, and
- the holder differs from the frame in terms of material.
6 more elements
Dependencies are inferred from the claim text.