Title:
OPTICAL IMAGING LENS GROUP
Document Type and Number:
WIPO Patent Application WO/2019/218760
Kind Code:
A1
Abstract:
Disclosed in the present application is an optical imaging lens group. The optical imaging lens group comprises, in order from an object side to an image side along an optical axis: a cover lens and a lens group, wherein the cover lens can have a positive optical power or a negative optical power, and an object-side surface thereof is a plano surface. The lens group can comprise, in order from an object side to an image side, a first lens having a positive optical power, a second lens having a negative optical power and a plurality of subsequent lenses, wherein an effective focal length f of the optical imaging lens group and an effective focal length f1 of the first lens can satisfy: 0.5＜f/f1＜1.5.
More Like This:
| WO/2023/250277 | SYSTEMS AND METHODS FOR MULTI-SPECTRAL IMAGING WITH A NON-MECHANICAL ADJUSTABLE APERTURE |
| JPH0486539 | MEASURING APPARATUS FOR DIAMETER OF LASER BEAM |
| WO/2004/010195 | LENS DEVICE |
Inventors:
ZHANG XIAOHUI (CN)
LYU SAIFENG (CN)
LI LONG (CN)
LYU SAIFENG (CN)
LI LONG (CN)
Application Number:
PCT/CN2019/077286
Publication Date:
November 21, 2019
Filing Date:
March 07, 2019
Export Citation:
Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B13/00; G02B13/18
Foreign References:
| CN208477186U | 2019-02-05 | |||
| CN107728288A | 2018-02-23 | |||
| CN103941380A | 2014-07-23 | |||
| CN103345043A | 2013-10-09 | |||
| CN104166220A | 2014-11-26 |
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
Download PDF: