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US 7,453,637 B2Granted
Projection type screen and image projection system
AssigneeKabushiki Kaisha Toshiba
InventorsKazuki Taira, Yuzo Hirayama
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Abstract
A projection type screen comprises a reflection surface array and a lenticular sheet. In the reflection surface array, a plurality of reflection surfaces is located along a horizontal direction. Each reflection surface has a mirror reflectivity of which section along the horizontal direction is quadratic curve shape. The lenticular sheet is located at an incident side of a projection light for the reflection surface array. The lenticular sheet has diffusivity along a vertical direction.
Claims20
A projection type screen, comprising:
- a reflection surface array including a plurality of reflection surfaces along a horizontal direction, each reflection surface having a quadratic curve shape along the horizontal direction;
- and
- a lenticular sheet at an incident side of a projection light for the reflection surface array, the lenticular sheet having diffusivity along a vertical direction.
An image projection system, comprising:
- a light emitting apparatus emitting a projection light including a display image;
- and
- a projection type screen on which the projection light is incident;
- said projection type screen comprising
- a reflection surface array including a plurality of reflection surfaces along a horizontal direction, each reflection surface having a quadratic curve shape along the horizontal direction;
- and
- a lenticular sheet an incident side of a projection light for the reflection surface array, the lenticular sheet having diffusivity along a vertical direction.
4 more elements
Dependencies are inferred from the claim text.