Image lens with high resolution, low chromatic aberration, and long flange back distance

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United States of America Patent

PATENT NO 8482865
APP PUB NO 20130057970A1
SERIAL NO

13303167

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Abstract

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An image lens includes a first lens and a second lens. The first lens includes a first and a second surfaces. The second lens includes a third and a fourth surfaces. The image lens satisfies: FB/TTL>0.23; G1R1/F1>1.93; Z/Y>0.27; Z/T<0.89; G2R1/F22R2/F21R2/F2, FB is a distance between the fourth surface and the image plane, TTL is a total length of the image lens, Z is a distance from a central point of the fourth surface to the fourth surface along the optical axis, Y is a distance from the central point of the fourth surface to an edge of the fourth surface along a direction perpendicular to the optical axis, T is a thickness of the second lens, G2R1, G2R2 and G1R2 are curvature radiuses of the third, fourth and second surfaces, F2 is a focal length of the second lens.

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Patent Owner(s)

Patent OwnerAddress
WCUBE CO LTDSCOTIA CENTRE 4TH FLOOR P O BOX 2804 GEORGE TOWN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ko, Chun-Cheng New Taipei, TW 65 194

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