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Title:
FIXED-FOCUS LENS
Document Type and Number:
WIPO Patent Application WO/2022/237630
Kind Code:
A1
Abstract:
A fixed-focus lens, comprising, sequentially arranged along an optical axis from an object side to an image side, a first lens group (1) with a negative focal power, a second lens group (2) with a negative focal power, a third lens group (3) with a positive focal power, a fourth lens group (4) with a positive focal power or negative focal power, a fifth lens group (5) with a positive focal power, a sixth lens group (6) with a positive focal power, a seventh lens group (7) with a negative focal power and an eighth lens group (8) with a positive focal power, wherein the first lens group (1), the fourth lens group (4), the fifth lens group (5) and the sixth lens group (6) each comprise a glass spherical surface lens, the fourth lens group (4) and the fifth lens group (5) form a cemented lens, and the second lens group (2), the third lens group (3), the seventh lens group (7) and the eighth lens group (8) each comprise a plastic aspherical surface lens.

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WO/2022/265455OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME
JPH01302311GAUSSIAN LENS
Inventors:
HE JIANWEI (CN)
YAO CHEN (CN)
ZHANG LEI (CN)
Application Number:
PCT/CN2022/091075
Publication Date:
November 17, 2022
Filing Date:
May 06, 2022
Export Citation:
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Assignee:
DONGGUAN YUTONG OPTICAL TECH CO LTD (CN)
International Classes:
G02B9/64; G02B13/18
Foreign References:
CN110007447A2019-07-12
CN107976785A2018-05-01
CN109188657A2019-01-11
CN110221401A2019-09-10
CN109061844A2018-12-21
JPS56121011A1981-09-22
CN101943789A2011-01-12
US5754345A1998-05-19
CN106932888A2017-07-07
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF:
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