Digital light processing projector

Details Digital light processing projector Digital light processing projector

2006-12-05

2006-12-05

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S031000, C353S034000, C353S037000, C353S099000

Reexamination Certificate

active

07144116

ABSTRACT:
A digital light processing projector comprising a light source, a splitter module, a plurality of total internal reflection (TIR) prisms and digital mirror devices (DMDs), a combiner and a projection lens is provided. The splitter module is disposed in the light path of the light after the light source to split the light into a plurality of color lights. Each color light is incident to the total reflection plane of the TIR prism with an incident angle larger than the critical angle, and then is totally reflected to the DMD. Thereafter, each color light is reflected by the DMD being incident to the total reflection plane of the TIR prism with an incident angle smaller than the critical angle, and then passes through the TIR prism directly. The color lights passing through the TIR prisms are combined by the combiner and then projected by the projection lens.

REFERENCES:
patent: 6172816 (2001-01-01), Tadic-Galeb et al.
patent: 6863401 (2005-03-01), Penn
patent: 6959990 (2005-11-01), Penn

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