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1. (WO2018219242) DUST-PROOF OPTICAL LENS FOCUSING ASSEMBLY

Pub. No.:    WO/2018/219242    International Application No.:    PCT/CN2018/088585
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Mon May 28 01:59:59 CEST 2018
IPC: G02B 7/04
G02B 27/01
Applicants: SHENZHEN DLODLO NEW TECHNOLOGY CO., LTD.
深圳多哚新技术有限责任公司
Inventors: LI, Gang
李刚
ZHANG, Fengxue
张丰学
LONG, Shoulun
龙寿伦
Title: DUST-PROOF OPTICAL LENS FOCUSING ASSEMBLY
Abstract:
A dust-proof optical lens focusing assembly, comprising: nested together, an inner lens barrel (214) and an outer lens barrel (211). The outer lens barrel and the inner lens barrel are in clearance fit, so that dust entering the internal space formed by the lens barrels through the clearance between the inner lens barrel and the outer lens barrel can be reduced, thereby avoiding affecting viewing effect. A round structure (215) and protruding structures (216) provided in the inner lens barrel can guarantee the sealing effect at the contact position with an inclined groove (213) reduce overall weight. The inclined groove positioned on the outer lens barrel is used for passing through a positioning feature piece (2200), so that the inner lens barrel and an inner optical lens (217) are driven to slide axially and circumferentially to complete focusing when a user moves the positioning feature piece. A dust-proof part fixing groove (223) and a dust-proof part are provided on the inner side wall or the outer side wall of the outer lens barrel, thus further preventing dust in external environment from entering the space formed by the lens barrels and solving the problems of the traditional optical assembly that viewing and focusing effects are affected because dust is easy to enter the assembly.