OPTICAL SYSTEM

WIPO Patent Application WO/2018/095163

A1

Disclosed is an optical system, comprising a first lens group (G1) and a second lens group (G2), wherein optical axes of the two lens groups exactly coincide, the angle of view of the first lens group (G1) is less than 60 degrees, and the angle of view of the second lens group (G2) is greater than 90 degrees; starting from an object along the directions of the optical axes, all the lenses on a front section of the first lens group (G1) and front section of the second lens group (G2) are shared, and all the lenses on a rear section of the first lens group (G1) and rear section of the second lens group (G2) are semi-circular; for the lenses on the rear section of the first lens group (G1), the semi-circular lenses below a horizontal plane where the optical axes are located are retained, and the semi-circular portions above the horizontal plane are entirely removed; for the lenses on the rear section of the second lens group (G2), the semi-circular lenses above the horizontal plane where the optical axes are located are retained, and the semi-circular portions below the horizontal plane are entirely removed; and the semi-circular lenses on the rear sections of the two lens groups are assembled in the same lens barrel.

ZHU YIWEI (CN)
SHANG JIEYANG (CN)
SHENG YAMING (CN)
ZHANG PINGHUA (CN)
MA SIYING (CN)

PCT/CN2017/106645

May 31, 2018

October 18, 2017

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JIAXING ZMAX OPTECH CO LTD (CN)

H04N5/225

CN106791293A	2017-05-31
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CN103713377A	2014-04-09
CN105676435A	2016-06-15
CN103765279A	2014-04-30
JP2009116132A	2009-05-28
JP2016001335A	2016-01-07

SHANGHAI JIAODA PATENT AGENCY (CN)

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