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Patent Searching and Data


Title:
OPTICAL IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/218889
Kind Code:
A1
Abstract:
An optical imaging system, comprising: in sequence from an object side to an image side along the optical axis, a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5), a sixth lens (L6), and a seventh lens (L7). The first lens has a negative power, and the image side of the first lens is a concave surface; the fourth lens has a positive power; the fifth lens has a positive power or a negative power, and the image side of the fifth lens is a concave surface; the seventh lens has a positive power or a negative power, and the image side of the seventh lens is aspherical and at least has a point of inflexion; the second lens, the third lens and the sixth lens respectively has a positive or negative power; and the effective radius DT11 of the object side of the first lens and a half of the diagonal length ImgH of an effective pixel area of an electric photosensor of the optical imaging system satisfy: 0.5

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Inventors:
YANG, Jian (No. 66-68 Shunyu Road, YuyaoNingbo, Zhejiang 0, 315400, CN)
WENREN, Jianke (No. 66-68 Shunyu Road, YuyaoNingbo, Zhejiang 0, 315400, CN)
Application Number:
CN2017/111842
Publication Date:
December 06, 2018
Filing Date:
November 20, 2017
Export Citation:
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Assignee:
ZHEJIANG SUNNY OPTICAL CO., LTD (No. 66-68 Shunyu Road, YuyaoNingbo, Zhejiang 0, 315400, CN)
International Classes:
G02B15/177; G02B9/64; G02B13/00
Foreign References:
CN106154488A2016-11-23
CN106291882A2017-01-04
CN106990510A2017-07-28
CN105974561A2016-09-28
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (19 A, Tower A InDo Building,No. 48A Zhichun Road, Haidian District, Beijing 8, 100098, CN)
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