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Production method of large-NA (large numerical aperture) aspherical cylindrical lens

A technology of cylindrical lens and aspheric surface, which is applied in the field of optical components, can solve the problem that the processing method of spherical lens cannot meet the requirements, and achieve the effects of saving production equipment, good precision and consistency, and simple process

Inactive Publication Date: 2017-05-31
CHANGSHA QINGBO PHOTOELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it is difficult to meet the requirements by using the common spherical lens processing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Embodiment, the preparation method of large NA aspheric cylindrical lens, comprises the following steps in sequence:

[0016] (1) Place the glass preform in a high-precision smooth metal film in a clean environment. The metal thin film is made of copper material, the thickness is 10-14mm, and the surface smoothness is 20-10. For example, the metal film thickness is 10, 12 or 14 mm, and the surface finish is 20, 15 or 10. In other words, the metal film is wrapped around the glass preform. In this embodiment, the clean environment refers to the environment of the ultra-clean room of the national standard GBJ73-84 grade 10,000 or above.

[0017] (2) Drop UV glue with the same refractive index as the glass preform into the gap between the glass preform and the metal film. In this embodiment, the ultraviolet glue is preferably high-end precision optical application glue, for example, UV glue.

[0018] (3) Use piezoelectric ceramics to apply positive pressure to the outer...

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Abstract

The invention discloses a production method of a large-NA (large numerical aperture) aspherical cylindrical lens; the production method comprises the steps of placing, in a clean environment, a glass preform in a high-precision smooth metal film which is made of copper and is 10-14 mm in thickness and 20-10 in surface gloss; dropping ultraviolet glue the same as the glass preform in refractive index into a gap between the glass preform and the metal film; applying, by piezoelectric ceramic, positive pressure to the outer surface of the metal film so that the metal film, the glass preform and the ultraviolet glue are in full contact, and performing ultraviolet curing by ultraviolet or low temperature heating. The production method has the advantage of good simplicity.

Description

technical field [0001] The invention relates to the technical field of optical components, in particular to a method for preparing a large NA aspheric cylindrical lens. Background technique [0002] With the continuous development of the optical field, optical cylindrical lenses have been used more and more. The aspherical cylindrical lens is the cylindrical form corresponding to the aspheric lens. Its design combines the aspheric surface to reduce the phase difference effect, and has the focusing effect of the standard cylindrical lens in one dimension. Aspheric cylindrical lenses can be divided into plano-convex cylindrical lenses, plano-concave cylindrical lenses, bi-convex cylindrical lenses and bi-concave cylindrical lenses according to their shape. Spherical lenses act on incident light in two dimensions at the same time, while cylindrical lenses only have the same effect in one dimension. A typical practical application is to use a pair of cylindrical lenses for dis...

Claims

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Application Information

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IPC IPC(8): G02B3/06
CPCG02B3/06
Inventor 汪晓波赖国权
Owner CHANGSHA QINGBO PHOTOELECTRIC TECH CO LTD
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