Title:
LENS ASSEMBLY AND PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/092701
Kind Code:
A1
Abstract:
A lens assembly and a projection device. The lens assembly comprises: a lens barrel (1), wherein an accommodating space (2) is provided in the lens barrel (1), a spiral groove (3) is provided in an outer side wall of the lens barrel (1), the spiral groove (3) in the lens barrel (1) communicates with the accommodating space (2) in the lens barrel (1), and a lens is provided in the accommodating space (2) of the lens barrel (1); and a driving assembly, wherein the driving assembly is arranged on the outer side of the lens barrel (1). The driving assembly is provided with a guide part (4), wherein the guide part (4) is located in the spiral groove (3) and is fixedly connected to the lens, and the guide part (4) can move in the spiral groove (3) in the direction of extension of the spiral groove (3); and when the guide part (4) moves in the spiral groove (3), the lens moves in the accommodating space (2) in the axial direction of the lens barrel (1). The guide part (4) rotates on the outer side wall of the lens barrel (1) along the spiral groove (3), so that the lens fixedly connected to the guide part (4) moves in the axial direction of the lens barrel (1) along with the guide part (4), thereby realizing focusing, and increasing the focusing precision of the lens assembly.
Inventors:
ZHANG QIANG (CN)
YIN QUN (CN)
TAO SHULIN (CN)
YIN QUN (CN)
TAO SHULIN (CN)
Application Number:
PCT/CN2021/137355
Publication Date:
June 01, 2023
Filing Date:
December 13, 2021
Export Citation:
Assignee:
GOERTEK OPTICAL TECH CO LTD (CN)
International Classes:
G02B7/09; G03B21/14
Foreign References:
| CN210572965U | 2020-05-19 | |||
| CN208044178U | 2018-11-02 | |||
| CN214375771U | 2021-10-08 | |||
| CN214375768U | 2021-10-08 | |||
| CN214375769U | 2021-10-08 | |||
| CN113391512A | 2021-09-14 | |||
| US20070024989A1 | 2007-02-01 |
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