Projection optical apparatus and projector with improved cooling capability
AssigneeSeiko Epson Corporation
InventorTakahiro Takizawa
Life of this patent
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Abstract
A projection optical apparatus includes a first housing, a second housing accommodated in the first housing, and a projection system accommodated in the second housing. The projection system includes a first reflector deflecting the optical path of the projection system. The first housing has a plurality of first openings that cause the interior of the first housing to communicate with the exterior of the first housing. The second housing has a plurality of second openings that cause the interior of the second housing to communicate with the exterior of the second housing.
Claims13
A projection optical apparatus comprising:
- a first housing;
- a second housing accommodated in the first housing;
- and
- a projection system accommodated in the second housing, wherein the projection system includes a second reflector that has a second reflection surface that reflects light and a first reflector that has a first reflection surface that reflects the light reflected from the second reflector,
- the first housing has a plurality of first openings that cause an interior of the first housing to communicate with an exterior of the first housing,
- the second housing has a plurality of second openings that cause an interior of the second housing to communicate with an exterior of the second housing, and
- the plurality of second openings includes an opening provided on a wall on a side of the second reflector with respect to the first reflector and an opening provided on a wall on an opposite side of the second reflector with respect to the first reflector.
A projector comprising:
- a light source apparatus;
- a light modulator modulating light emitted from the light source apparatus;
- a projector body housing the light source apparatus and the light modulator;
- and
- the projection optical apparatus inserted into the projector body,
- wherein the projection optical apparatus includes
- a first housing,
- a second housing accommodated in the first housing, and
- a projection system accommodated in the second housing, and
- the projection system includes a first reflector deflecting an optical path of the projection system,
- the first housing has a plurality of first openings that cause an interior of the first housing to communicate with an exterior of the first housing, and
- the second housing has a plurality of second openings that cause an interior of the second housing to communicate with an exterior of the second housing.
A projection optical apparatus comprising:
- a first housing;
- a second housing accommodated in the first housing;
- and
- a projection system accommodated in the second housing, wherein
- the projection system includes a first reflector defecting an optical path of the projection system,
- the first housing has a plurality of first openings that cause an interior of the first housing to communicate with an exterior of the first housing, and
- the second housing has a plurality of second openings that cause an interior of the second housing to communicate with an exterior of the second housing wherein
- the projection system includes a first lens group disposed at an enlargement side of the first reflector, a second reflector disposed at a reduction side of the first reflector, and a second lens group disposed at the reduction side of the second reflector, and the first reflector and the second reflector deflect the optical path of the projection system in such a way that a first optical axis of the first lens group is substantially parallel to a second optical axis of the second lens group.
Dependencies are inferred from the claim text.