Patent ID: 6796660
Filing Date: 2004-09-28
Classification: H04N

Abstract:
A projective display apparatus comprising:an illumination unit which includes a light source, an integrator lens and a collimator lens; a light splitter unit which splits light beams from said illumination unit into a plurality of color components; a plurality of light valves, a respective one of said plurality of light valves corresponding to a respective one of said plurality of color components; a cooling fan; and a wind guiding unit which guides the cooling wind from said cooling fan to said illumination unit and said plurality of light valves; wherein said wind guiding unit splits and forms at least two branch wind guiding paths, one of said at least two branch wind guiding paths guiding cooling wind from said cooling fan to said illumination unit and another of said at least two branch guiding paths guiding said cooling wind to said plurality of light valves.