Title:
CAMERA LENS
Document Type and Number:
WIPO Patent Application WO/2018/214349
Kind Code:
A1
Abstract:
A camera lens, having a total effective focal length f and an entrance pupil diameter (EPD) and comprising a first lens (E1), a second lens (E2), a third lens (E3), a fourth lens (E4), a fifth lens (E5), a sixth lens (E6), and a seventh lens (E7) from an object side to an image side along an optical axis in sequence. The first lens and the sixth lens both have positive focal power; the second lens, the third lens, the fifth lens and the seventh lens all have positive focal power or negative focal power; and the fourth lens has negative focal power, the object side surface (S7) of the fourth lens is a concave surface, and the image side surface (S8) of the fourth lens is a concave surface. The relationship between the total effective focal length f and the entrance pupil diameter (EPD) of the camera lens satisfies the following condition: f/EPD<1.7.
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Inventors:
DAI FUJIAN (CN)
WENREN JIANKE (CN)
HE LINGBO (CN)
WENREN JIANKE (CN)
HE LINGBO (CN)
Application Number:
PCT/CN2017/102428
Publication Date:
November 29, 2018
Filing Date:
September 20, 2017
Export Citation:
Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B13/00; G02B9/64
Foreign References:
| CN106950681A | 2017-07-14 | |||
| CN104597582A | 2015-05-06 | |||
| CN106054353A | 2016-10-26 | |||
| CN105866924A | 2016-08-17 | |||
| US9297983B2 | 2016-03-29 |
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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