Optical member, illuminating device, and projection type...

Optics: image projectors – Composite projected image – Multicolor picture

Reexamination Certificate

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Details

C353S037000, C353S099000, C362S231000, C362S293000

Reexamination Certificate

active

11086319

ABSTRACT:
A projection type video display is provided with three LED light sources. Lights emitted from each LED light source are guided into a light incidence surface of a rod integrator by a cross dichroic mirror. In a first light incidence area (an area opposite to a LED light source in red) of the cross dichroic mirror, a first dichroic mirror is provided, and in a second light incidence area (an area opposite to a LED light source in blue) of the cross dichroic mirror, a second dichroic mirror is provided. The first dichroic mirror transmits the light in red and reflects lights in other colors, and the second dichroic mirror transmits the light in blue and reflects lights in other colors.

REFERENCES:
patent: 5073013 (1991-12-01), Sonehara et al.
patent: 6067128 (2000-05-01), Imai
patent: 6869190 (2005-03-01), Goto et al.
patent: 7066600 (2006-06-01), Nakashima et al.
patent: 7070281 (2006-07-01), Kato
patent: 7070300 (2006-07-01), Harbers et al.
patent: 2003/0147055 (2003-08-01), Yokoyama
patent: 2002-189263 (2002-07-01), None

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