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Patent Searching and Data


Title:
TWO-GROUP-TYPE ZOOM LENS AND USAGE METHOD THEREFOR, AND IMAGING APPARATUS COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2019/024798
Kind Code:
A1
Abstract:
Disclosed is a two-group-type zoom lens, comprising: a first lens group (G1) having negative focal power, an aperture diaphragm (S) and a second lens group (G2) having positive focal power, these being sequentially and coaxially arranged from an object side to an image side. The first lens group (G1) comprises a first meniscus lens (L11) having negative focal power, a first biconcave lens (L12) having negative focal power and a first biconvex lens (L13) having positive focal power, these being sequentially and coaxially arranged from the object side to the image side. The second lens group (G2) comprises a second biconvex lens (L21) having positive focal power, a second meniscus lens (L22) having positive focal power, a second biconcave lens (L23) having negative focal power, a third biconvex lens (L24) having positive focal power, a third meniscus lens (L25) having negative focal power, a fourth meniscus lens (L26) having negative focal power and a fourth biconvex lens (L27) having positive focal power, these being sequentially and coaxially arranged from the object side to the image side.

Inventors:
YANG, Hersem (Building No.15, Haixi Hi-tech ParkWulongjiang Avenue, Shangjie Town, Minhou Count, Fuzhou Fujian 1, 350001, CN)
LIN, Jiamin (Building No.15, Haixi Hi-tech ParkWulongjiang Avenue, Shangjie Town, Minhou Count, Fuzhou Fujian 1, 350001, CN)
WANG, Eric (Building No.15, Haixi Hi-tech ParkWulongjiang Avenue, Shangjie Town, Minhou Count, Fuzhou Fujian 1, 350001, CN)
LIN, Zheng (Building No.15, Haixi Hi-tech ParkWulongjiang Avenue, Shangjie Town, Minhou Count, Fuzhou Fujian 1, 350001, CN)
Application Number:
CN2018/097512
Publication Date:
February 07, 2019
Filing Date:
July 27, 2018
Export Citation:
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Assignee:
AZURE PHOTONICS CO., LTD. (Building No.15, Haixi Hi-tech ParkWulongjiang Avenue, Shangjie Town, Minhou Count, Fuzhou Fujian 1, 350001, CN)
International Classes:
G02B15/14
Foreign References:
CN107247323A2017-10-13
CN103777333A2014-05-07
JPH08179208A1996-07-12
CN104977702A2015-10-14
CN104459963A2015-03-25
US20120105977A12012-05-03
Attorney, Agent or Firm:
BORSAM INTELLECTUAL PROPERTY (FUZHOU) (502 Fujian Commercial Building, 23 Zhongshan Road Gulou Distric, Fuzhou Fujian 3, 350003, CN)
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