Optics: image projectors – Reflector – Plural
Reexamination Certificate
2007-08-16
2010-06-08
Epps, Georgia Y (Department: 2878)
Optics: image projectors
Reflector
Plural
C353S098000, C353S100000
Reexamination Certificate
active
07731372
ABSTRACT:
A projector comprises a light source unit, a light guide element, a first focus element, a second focus element, a micromirror element and an image unit. The light source unit provides a light beam. The first focus element comprises a first focal length f1. The second focus element comprises a second focal length f2, wherein2.0<f2f1<3.6.The light beam travels from the light source unit, passing the light guide element, the first focus element, the second focus element and the micromirror element to the image unit.
REFERENCES:
patent: 7390098 (2008-06-01), Wada
Epps Georgia Y
Ko Tony
Qisda Corporation
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