Light source device and projector

Details Light source device and projector Light source device and projector

2006-10-31

2006-10-31

Perkey, W. B. (Department: 2851)

Optics: image projectors

Reflector

Plural

C353S037000, C362S302000, C362S346000, C362S347000, C349S067000, C313S114000

Reexamination Certificate

active

07128424

ABSTRACT:
A light source device includes a light-emitting tube and a reflector. The light-emitting tube has a light-emitting portion that generates a light beam by an electric discharge between electrodes, and sealing portions provided on both sides of the light-emitting portion. The light-emitting tube has a sub-reflection mirror that covers substantially a front half of the light-emitting portion. The reflector has a neck portion provided with an insertion hole to which the light-emitting tube is inserted, and a reflecting portion integrally formed with the neck portion and having an ellipsoidal curved reflecting surface that irradiates the light beam emitted by the light-emitting portion to align the light beam in a predetermined direction. The opening diameter of the insertion hole on the side of the reflecting surface is greater than the external diameter of the sub-reflection mirror and within the internal diameter of a valid reflection area of the reflector.

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