Imaging lens

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United States of America Patent

PATENT NO 9170404
APP PUB NO 20150205074A1
SERIAL NO

14675892

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Abstract

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An imaging lens substantially consists of six lenses of a negative first lens, a negative second lens, a positive third lens, a positive fourth lens, a negative fifth lens and a positive sixth lens in this order from an object side. When a curvature radius of an object-side surface of the fourth lens is R8, and a curvature radius of an image-side surface of the fourth lens is R9, and an Abbe number of the material of the third lens for d-line is νd3, and an Abbe number of the material of the fifth lens for d-line is νd5, the following conditional formulas (1) and (6) are satisfied:

description='In-line Formulae' end='lead'−0.61<(R8+R9)/(R8−R9)<0.44  (1); anddescription='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'38.1<νd3+νd5<45.1  (6).description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
TIANJIN OFILM OPTO ELECTRONICS CO LTD2 HONGYUAN STREET XIQING ECONOMIC DEVELOPMENT AREA TIANJIN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asami, Taro Saitama-ken, JP 61 822
Ito, Toru Saitama-ken, JP 155 2663
Katsuma, Toshiaki Saitama-ken, JP 52 476
Kondo, Masato Saitama-ken, JP 37 266
Otomo, Ryoko Saitama-ken, JP 24 194

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