Projection optical system having a curved mirror

Details Projection optical system having a curved mirror Projection optical system having a curved mirror

2011-04-05

2011-04-05

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Composite projected image

Multicolor picture

C353S098000, C353S037000, C353S033000, C353S081000, C359S631000, C359S863000, C348S751000, C348S790000, C349S005000, C349S008000

Reexamination Certificate

active

07918562

ABSTRACT:
A projection display device comprises: a light source; liquid crystal panels disposed corresponding to R light, G light and B light; a light guiding optical system for guiding R light, G light and B light among light from the light source to respective corresponding liquid crystal panels; a dichroic prism for synthesizing the R light, G light and B light modulated by the liquid crystal panels; a projection optical system having a curved mirror for enlarging and projecting the light synthesized by the dichroic prism; and a bending mirror. A placement plane for optical members is orthogonal to a projection plane (screen surface), and shorter sides of optical members forming the liquid crystal panels and the light guiding optical system are placed on the placement plane.

REFERENCES:
patent: 7048388 (2006-05-01), Takaura et al.
patent: 7066610 (2006-06-01), Yamada et al.
patent: 7714945 (2010-05-01), Tan et al.
patent: 2007/0139623 (2007-06-01), Hisada et al.
patent: 2007/0253076 (2007-11-01), Takaura et al.
patent: 2000-284228 (2000-10-01), None
patent: 2004-258620 (2004-09-01), None

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