Light source device and projector

Details Light source device and projector Light source device and projector

2006-06-20

2006-06-20

Perkey, W. B. (Department: 2851)

Optics: image projectors

Temperature control

Heat filter

C353S054000, C353S056000, C362S293000, C362S294000, C362S296040, C362S345000, C362S346000, C362S347000

Reexamination Certificate

active

07063423

ABSTRACT:
A light source lamp unit (10) includes a light source lamp (11), an ellipsoidal reflector (12) and a plate body (19). The plate body (19) is provided behind the reflector (12) with a gap kept therebetween, which has a shape corresponding to the profile of a reflecting portion (122) of the reflector (12). A cooling channel for passing a cooling air is formed between the plate body (19) and the reflector (12). The width of the cooling channel in a direction along an optical axis of the light source lamp (11) is minimized at a part near a neck portion (121) of the reflecting portion (122) and enlarged toward the peripheral edge of the reflecting portion (122) of the reflector (12).

REFERENCES:
patent: 1457646 (1923-06-01), Wilson
patent: 5758956 (1998-06-01), Bornhorst et al.
patent: A 8-186784 (1996-07-01), None

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