Wide-angle projection lens

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United States of America Patent

PATENT NO 9690082
SERIAL NO

14735181

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Abstract

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A wide-angle projection lens includes a first lens group with negative refractive power, a second lens group with positive refractive power and a third lens group with positive refractive power, all of which are arranged in order from a projection side to an image source side along an optical axis. The third lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, all of which are arranged in order from the projection side to the image source side along the optical axis, wherein the third lens and the fourth lens are cemented together to form a cemented lens and there is no air gap between the third lens and the fourth lens.

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Patent Owner(s)

Patent OwnerAddress
ASIA OPTICAL CO INC22-3 SOUTH 2ND ROAD T E P Z TAICHUNG 42754
SINTAI OPTICAL (SHENZHEN) CO LTDBUILDING 1ST 2ND 3RD QUWEI INDUSTRIAL ESTATE LI-SONG-LANG INDUSTRIAL DIST GUANG MING NEW ZONE SHENZHEN CITY GUANDONG PROVINCE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lee, Tsan-Haw Taichung, TW 11 25

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