Optics: image projectors – Reflector – Plural
Reexamination Certificate
2006-02-21
2009-02-03
Dowling, William C. (Department: 2851)
Optics: image projectors
Reflector
Plural
C362S298000, C362S346000
Reexamination Certificate
active
07484853
ABSTRACT:
A light source device includes: a light emitting tube having a light emitting portion that generates light by an electric discharge between a pair of electrodes and first and second sealed portions provided on either side of the light emitting portion; a main reflecting mirror provided along the first sealed portion of the light emitting tube and having a main reflecting portion that reflects light radiated from the light emitting tube so as to converge at a predetermined position; and a sub-reflecting mirror provided along the second sealed portion of the light emitting tube and having a sub-reflecting portion and a base portion, the sub-reflecting portion sending light radiated from the light emitting tube toward a side opposite to the main reflecting mirror back to the light emitting portion of the light emitting tube, and the base portion being provided at a side of the second sealed portion of the sub-reflecting portion and formed in a stepped manner with respect to the sub-reflecting portion.
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Nishida Kazuhiro
Takezawa Takeshi
Dowling William C.
Oliff & Berridg,e PLC
Seiko Epson Corporation
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