Optical lens and assembly method thereof

A technology for optical lenses and assembly parts, applied in the field of optical lenses, can solve problems such as the inability to meet the 200-degree expansion of plastic lenses, the radial deformation, the misalignment of the lens and the lens barrel, and the impact on the optical performance of the lens, etc., to achieve high positioning accuracy , reduce the impact, reduce the effect of force
CN111142209BActive Publication Date: 2022-03-29NINGBO SUNNY AUTOMOTIVE OPTECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO SUNNY AUTOMOTIVE OPTECH
Publication Date
2022-03-29

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    Figure 1
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    Figure 2
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    Figure 3
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Abstract

The application provides an optical lens, comprising a lens barrel, a first lens, a front fixing element and a rear fixing element, the first lens has an opposite front surface and a rear surface, and an outer diameter surface connecting the front surface and the rear surface The front fixing element and the rear fixing element are respectively in contact with a part of the front end surface and a part of the rear end surface to fix the first lens; wherein, there may be a fit gap between the outer diameter surface and the inner wall of the lens barrel; a part of the front end surface, the rear end surface A portion of the end surface, and at least two of the surfaces of the front and rear fixation elements that contact the front end surface and the rear end surface, respectively, are tapered. The present application also provides an assembly method of an optical lens, including processing the lens, the lens barrel, the front fixing element and the rear fixing element, so that the lens is in contact with at least one of the front and rear fixing elements in a tapered bearing manner, and There is a matching gap with the inner wall of the lens barrel; the front and rear fixing elements and lenses are installed in the lens barrel.
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Description

technical field

[0001] The present application relates to the field of optical lenses, and more specifically relates to an optical lens and an assembly method thereof that reduce the change of lens surface shape under high temperature. Background technique

[0002] The plastic lens in the optical lens is easy to expand and deform under high temperature conditions, which may lead to indeterminate changes in the surface shape of the plastic lens, thereby affecting the final imaging quality.

[0003] Axial deformation is an important factor affecting the shape of the lens. First refer to Figure 1 to Figure 3 Analyze the causes of axial deformation in the prior art. As shown in the figure, the front end surface of the plastic lens 200 of the optical lens 10 abuts against the inner boss 101 of the lens barrel 100 in the axial direction by means of a platform surface, and usually by means of a rear fixing element (in this example) Among them, including the first spacer 300, the...

Claims

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