Projection zoom lens and projection type display device

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United States of America Patent

PATENT NO 8922903
SERIAL NO

14258321

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A projection zoom lens has a negative first lens group which is fixed when changing magnification, second through fifth lens groups that move when changing magnification, and a positive sixth lens group which is fixed when changing magnification, in this order from a magnification side. The reduction side is telecentric. When changing magnification from a wide angle end to a telephoto end, the second lens group moves toward the magnification side. The first and second lenses from the reduction side of the fifth lens group are a positive lens and a negative lens, respectively. The sixth lens group is constituted by a single positive lens. The projection zoom lens satisfies a predetermined Conditional Formula.

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Patent Owner(s)

  • FUJIFILM CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amano, Masaru Saitama-ken, JP 82 295
Nagahara, Akiko Saitama-ken, JP 56 365

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