Imaging lens

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United States of America Patent

PATENT NO 8861100
APP PUB NO 20130063828A1
SERIAL NO

13605438

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Abstract

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A junction type compound lens using glass and resin is used. By properly controlling the difference between refractive indices and the difference between Abbe numbers of the resin and glass, interface reflection that occurs when a ray with a large incidence angle is incident is restricted, and generation of a flare or a ghost image is restricted. Further, by properly controlling the difference in refractive index and the difference in Abbe number, various aberrations, such as spherical aberration, field curvature, and chromatic aberration, which may deteriorate optical performance, can be corrected. Thus, a small and high-performance imaging lens can be provided.

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Patent Owner(s)

Patent OwnerAddress
SEIKOH GIKEN CO LTDMATSUDO-SHI CHIBA 270-2214

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujiwara, Tatsuya Chiba, JP 8 87
Hirao, Tomomi Chiba, JP 6 7

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