Double waterproof structure for lens

Abstract

The invention discloses a double waterproof structure for a lens. The double waterproof structure comprises a lens support barrel. The lens support barrel includes an upper empty segment and an internal thread segment. The inner diameter of the upper empty segment is greater than that of the internal thread segment. The connecting portion of the upper empty segment and the internal thread segment forms a step surface. The lens support barrel is provided internally with a lens body. One end of the lens body is provided with a body thread segment matching the internal thread segment and enabling the lens body to move axially in the lens support barrel. The central portion of the lens body is provided with an annular boss projecting from the outer circumference thereof. A first sealing ring for waterproofing is disposed between one side of the annular boss and the step surface. One end, adjacent to the upper empty segment, of the lens support barrel is further connected with a support barrel cover for the lens body to pass through. A second sealing ring for waterproofing is disposed between the other end of the annular boss and the support barrel cover. The invention is simple in structure, easy to install and remove, and good in sealing and waterproof effect.

Description

【Technical field】 [0001] The invention relates to a lens, more specifically to a double waterproof structure of the lens. 【Background technique】 [0002] The traditional waterproofing of the lens body and the lens support tube is mainly to dispense glue between the two. After the glue is dispensed, the lens body and the lens support tube cannot move relative to each other, making it impossible to adjust the focus in real time. In addition, the glue dispensing process is complicated. If there is too much glue, the glue will overflow, and if there is too little glue, the waterproof effect will not be achieved. Therefore, the structure that uses glue to seal will produce more defective products, which will affect the stability of product quality. Furthermore, it is difficult to disassemble the lens body and the lens support tube after dispensing, which is not conducive to the replacement of spare parts. [0003] Therefore, the present invention just produces based on above def...

AI Technical Summary

Problems solved by technology

[0002] The traditional waterproofing of the lens body and the lens support tube is mainly to dispense glue between the two. After the glue is dispensed, the lens body and the lens support tube cannot move relative to each other, making it impossible to adjust the focus in real time.

In addition, the glue dispensing process is complicated. If there are too many glue points, the glue will overflow, and if there are too few points, the waterproof effect will not be achieved. Therefore, the structure that uses glue to seal will produce more defective products, which will affect the stability of product quality.

Furthermore, it is difficult to disassemble the lens body and lens support tube after dispensing, which is not conducive to the replacement of spare parts

Images