Optical system for projection and projection-type display apparatus

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United States of America Patent

PATENT NO 9001429
APP PUB NO 20140347740A1
SERIAL NO

14456362

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Abstract

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In an optical system for projection that is telecentric on a reduction side, a correction lens group substantially consisting of a part of lens groups in the optical system for projection is configured to move in the direction of an optical axis to correct a shift in a focal position caused by a change in temperature, and predetermined conditional formulas are satisfied.

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Patent Owner(s)

  • FUJIFILM CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagatoshi, Yukiko Saitama-ken, JP 64 210

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