Title:
A ZOOM LENS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/202273
Kind Code:
A1
Abstract:
A zoom lens system for providing high quality images with higher resolution includes a first lens group (110), an aperture stop (120), and a second lens group (130). The first lens group has a positive or negative refractive power, and includes at least two lens elements having a negative refractive power and at least on lens element having a positive refractive power. The second lens group has a positive refractive power. A distance between a first and second lens group is not fixed.
Inventors:
LIU KAI (CN)
WANG FENG (CN)
DING HONGXING (CN)
ZHANG XINGMING (CN)
ZHANG QIAN (CN)
WANG FENG (CN)
DING HONGXING (CN)
ZHANG XINGMING (CN)
ZHANG QIAN (CN)
Application Number:
PCT/CN2016/086000
Publication Date:
December 22, 2016
Filing Date:
June 16, 2016
Export Citation:
Assignee:
ZHEJIANG DAHUA TECHNOLOGY CO (CN)
International Classes:
G02B15/177; G02B13/00
Foreign References:
| CN101320125A | 2008-12-10 | |||
| CN105182504A | 2015-12-23 | |||
| US20020126393A1 | 2002-09-12 | |||
| CN102955233A | 2013-03-06 | |||
| JP2005316052A | 2005-11-10 | |||
| CN204807791U | 2015-11-25 | |||
| CN204964860U | 2016-01-13 | |||
| CN204807794U | 2015-11-25 | |||
| JP2012242688A | 2012-12-10 |
Other References:
See also references of EP 3311212A4
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