Title:
LENS HAVING TWO LENS BARRELS, LENS MODULE, AND ASSEMBLING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/088454
Kind Code:
A1
Abstract:
A lens (10) having two lens barrels, a lens module (20), and an assembling method. The lens (10) having two lens barrels comprises a first lens barrel (110) and a second lens barrel (120). The first lens barrel (110) comprises a first end portion (111), a second end portion (112), and a lens group (113) provided in the first lens barrel (110), wherein an outer surface (1120) of the second end portion (112) is provided with an external thread (1121). The second lens barrel (120) comprises a first end surface (121), a second end surface (122), and an inner surface (123), wherein the inner surface (123) is provided with an internal thread (124), and the second lens barrel (120) is connected to the external thread (1121) of the first lens barrel (110) by means of the internal thread (124). A distance H between an optical center (O) of the lens group (113) and the second end surface (122) of the second lens barrel (120), a focal length (FL) f of the lens group (113), and a correction coefficient α satisfy a relational expression: H=f+α, wherein the correction coefficient α is used for correcting a distance between the second end surface (122) and an image sensor component (200), so that a focal point f of the lens group (113) coincides with the center of an image sensor (220). The lens (10) having two lens barrels is simple in structure and less in EFL tolerance, so that the focal point f of the lens can precisely and rapidly coincide with the center of the image sensor (220), thereby improving the yield of a product that is combined with the image sensor component (200).
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Inventors:
DENG BINQUAN (CN)
XIONG XINYU (CN)
XIONG XINYU (CN)
Application Number:
PCT/CN2020/109675
Publication Date:
May 14, 2021
Filing Date:
August 18, 2020
Export Citation:
Assignee:
JIANGXI LIANYI OPTICS CO LTD (CN)
International Classes:
G02B7/02; G02B13/16; G03B19/02
Foreign References:
| CN2694300Y | 2005-04-20 | |||
| CN2694300Y | 2005-04-20 | |||
| CN205861983U | 2017-01-04 | |||
| CN207114850U | 2018-03-16 | |||
| CN207965298U | 2018-10-12 | |||
| CN108873221A | 2018-11-23 | |||
| US20170153412A1 | 2017-06-01 |
Other References:
See also references of EP 3865924A4
Attorney, Agent or Firm:
SHENZHEN ZHIQUAN INTELLECTUAL PROPERTY OFFICE (CN)
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