Waterproof fisheye lens

Abstract

The invention discloses a waterproof fisheye lens. The waterproof fisheye lens includes a first lens which is located on an outer side of a lens body and includes an outer edge; a first locking pressing ring which includes an inner end part and an outer end part, wherein the outer end part is fastened on the outer edge of the first lens and the inner end part is in close contact with the lens body, an annular step is formed on the outer edge of the first lens and includes an outer end face, an inner end face and a circumferential wall connecting the outer end face and the inner end face, and the outer end part of the first locking pressing ring includes a head fastened to the outer end face of the annular step and a base abutting against the circumferential wall of the annular step; firstultraviolet curing adhesive arranged at a joint of the inner end face of the annular step and the base of the outer end part of the first locking pressing ring; and a second ultraviolet curing adhesive arranged between the outer end face of the annular step and the head of the outer end part of the first locking pressing ring. According to the waterproof fisheye lens provided by the invention, material cost of the fisheye lens is saved, the structure is simple, and relatively good waterproof performance is achieved.

Description

Technical field [0001] The present invention relates to the field of optical technology, in particular to a waterproof fisheye lens. Background technique [0002] At present, a large-angle fisheye lens usually includes a lens and a locking ring arranged on the outer edge of the lens. In order to achieve a better waterproof effect, the locking ring is locked to cause the locking ring to form a certain stress on the lens, and the stress is reduced. The gap between the locking ring and the lens is eliminated to prevent water from penetrating into the lens. [0003] However, the above-mentioned waterproof method will cause the lens to withstand greater pressure, and the material and structure of the lens are required to be high, which increases the material cost and manufacturing difficulty of the fisheye lens. At the same time, due to the long-term stress of the lens, it will be used in daily use. Random handling or accidental bumping of the lens will increase the risk of lens cracki...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of high material cost, high manufacturing difficulty, and risk of lens edge cracking in the existing waterproof fisheye lens in the prior art, the embodiment of the present invention provides a first lens, and the first lens is located outside the lens body , the first lens includes an outer edge;

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