Title:
ZOOM PROJECTION LENS AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/206785
Kind Code:
A1
Abstract:
A zoom projection lens and an electronic device. The zoom projection lens sequentially comprises, from a zoom-in side to a zoom-out side in the direction of an optical axis, a first zoom lens group (20), a second zoom lens group (30), a compensation lens group (40), and a fixed lens group (50), wherein the first zoom lens group (20) has positive focal power, the second zoom lens group (30) has negative focal power, the compensation lens group (40) has positive focal power, and the fixed lens group (50) has positive focal power; and the first zoom lens group (20), the second zoom lens group (30) and the compensation lens group (40) are movable along the optical axis.
Inventors:
ZHAO YUN (CN)
Application Number:
PCT/CN2022/102034
Publication Date:
November 02, 2023
Filing Date:
June 28, 2022
Export Citation:
Assignee:
GOERTEK OPTICAL TECH CO LTD (CN)
International Classes:
G02B13/16; G02B15/14; G02B15/163; G03B21/00; G03B21/14
Foreign References:
| US5504625A | 1996-04-02 | |||
| JP2001356269A | 2001-12-26 | |||
| JPH01164731A | 1989-06-28 | |||
| CN1924630A | 2007-03-07 | |||
| CN101995645A | 2011-03-30 |
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