Projection image display apparatus

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United States of America Patent

PATENT NO 9335618
APP PUB NO 20140293238A1
SERIAL NO

14356451

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A projection image display apparatus capable of maintaining the positional accuracy of an integrator optical system even when subjected to an external force is provided. The projection image display apparatus includes an integrator optical system which converges and uniformizes a light emitted from a light source, a color separating optical system which separates the colors of the light emitted from the integrator optical system, a color synthesizing optical system which synthesizes lights separated by the color separating optical system, a projection optical system which emits the light, which has been synthesized by the color synthesizing optical system, onto a projection surface, a first optical case which fixes and houses the integrator optical system, the color separating optical system, and the color synthesizing optical system at respective predetermined positions, and a second optical case which fixes and houses optical components of the integrator optical system at predetermined positions, and the second optical case is attached to the first optical case.

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Patent Owner(s)

  • MAXELL, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adachi, Kei Ibaraki, JP 38 164
Inui, Shinro Ibaraki, JP 22 119
Ishizu, Takafumi Ibaraki, JP 6 33
Ono, Chohei Ibaraki, JP 23 122
Shikita, Kazuo Ibaraki, JP 27 150
Ueoka, Kazumasa Ibaraki, JP 14 132

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