Optics: image projectors – Temperature control – Blower
Patent
1997-10-28
2000-05-23
Dowling, William
Optics: image projectors
Temperature control
Blower
353 38, 353 57, 353119, G03B 2116
Patent
active
06065838&
ABSTRACT:
A liquid crystal projector, having a configuration in which an exhaust fan is arranged adjacently to a projection lens at an angle to the optical axis of the projection lens, a configuration including a plurality of tilted wind-directing plates, a configuration in which the arrangement of a first reflection mirror, a first lens array, a light source and the exhaust fan is substantially parallel and adjacent to the arrangement of the projection lens, a dichroic prism and a second dichroic mirror, and/or a configuration in which the lens array has the incident surface thereof made of a concave lens.
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Masumoto, Yoshihiro, et al., High Efficient Optical Illumination System for Liquid Crystal Projector Using Varied Aperture Lens Array, 22Fa06 of Optical Federation Symposium, Hamamatsu 1994, pp. 135-136.
Deguchi Masaharu
Inage Hisao
Kakuda Takashi
Konuma Nobuhiro
Matsuda Yutaka
Beard, Jr. R. William
Dowling William
Hitachi , Ltd.
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