Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method of making an aspheric surface

A technology of aspheric surface and aspheric lens, which is applied in the direction of manufacturing tools, instruments, lenses, etc., can solve the problems of complex processing technology, high risk, and difficulty in achieving collimation effect

Active Publication Date: 2022-02-15
FUZHOU PHOTOP QPTICS CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing technology is complicated, the degree of difficulty is high, and the risk of chemical corrosion and hydrogen-oxygen flame high-temperature repair is high, and it is not easy to operate
[0003] In particular, for cylinders with large LD divergence angles, such as θ=±45°, it is difficult to achieve ideal collimation effects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method of making an aspheric surface
  • A method of making an aspheric surface
  • A method of making an aspheric surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, a method for making an aspheric surface uses a femtosecond laser 2 to irradiate an optical flat sheet 1 with femtosecond laser, and adjusts the energy density or beam waist diameter, irradiation trajectory and running speed of the femtosecond laser to make The refractive index distribution of the optical flat sheet changes, and the △n*H (optical path) changes in different regions are realized through the thickness H of the optical flat sheet and the femtosecond laser irradiation, so that the effect of the optical flat sheet 1 combined with the ordinary lens reaches Such as image 3 The aspheric effect of the aspheric lens in the prior art is shown, wherein the femtosecond laser irradiation trajectory of the optical flat plate 1 located on the end face of the same side is concentric along the central position of the irradiated end face and gradually progresses toward the edge of the irradiated end face Continuous femtosecond laser irradiation,...

Embodiment 2

[0022] Such as Figure 4 As shown, in this embodiment, the method for producing an aspheric surface in Example 1 is applied to the production of a three-piece structure composite aspheric lens, which includes a first lens 1 and an optical flat plate 2 arranged in sequence along the propagation direction of the optical path. and the second lens 3, the optical flat sheet 2 is irradiated with femtosecond laser by a femtosecond laser, so that the refractive index distribution of the optical flat sheet 2 is changed, so that the first lens 1, the optical flat sheet 2 and the second lens 3 are formed The three-piece composite lens achieves the effect of an aspheric lens.

Embodiment 3

[0024] Such as Figure 5 As shown, in this embodiment, the method for producing an aspheric surface in Example 1 is applied to the production of an aspheric cylindrical lens, which includes a first lens 1, an optical flat plate 2 and a second lens arranged in sequence along the propagation direction of the optical path 3. Femtosecond laser irradiation is performed on the optical flat sheet 2 by a femtosecond laser, so that the refractive index distribution of the optical flat sheet 2 is changed, and it is made into a long strip-shaped cylindrical surface compensation sheet, which changes the traditional cylindrical surface that is difficult to obtain ideal, The defects of the collimated optical effect make the first lens 1, the optical flat plate 2 and the second lens 3 constitute an aspheric cylindrical lens, which is used for cylindrical compensation with a large divergence angle of LD, that is, θ=±45°, which can be Get the desired effect.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for making an aspheric surface. The optical flat sheet glass is irradiated by a femtosecond laser, and the refractive index distribution of the glass is changed by adjusting the energy density, irradiation track and running speed of the laser. Adjust the thickness of the optical flat sheet and the action time and trajectory of the femtosecond laser to achieve the change of the refractive index in different areas, so that the composite lens can achieve the effect of aspheric surface, but at the same time it will not cause damage to the optical flat sheet glass, and does not require follow-up The processing of related methods such as chemistry or physics is simple and quick.

Description

technical field [0001] The invention relates to the technical field of making optical elements, in particular to a method for making an aspheric surface. Background technique [0002] In the prior art, aspherical surfaces are generally produced by using traditional processing methods or precision lathes, which is not only difficult, but also has low production efficiency and product yield. At present, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, He Fei, Cheng Ya, Lin Jintian, Xu Zhizhan and others proposed a "method for preparing micro-optical components on quartz glass substrates using femtosecond laser", which uses femtosecond laser irradiation The three-step method of chemical corrosion and hydrogen-oxygen flame polishing can realize the processing of any surface shape such as aspheric, flat, and standard spherical surfaces; hydrogen-oxygen flame polishing produces only water, which is environmentally friendly and fast in polishing speed, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00G02B3/02
CPCG02B3/02B23K26/00
Inventor 吴砺林磊张建英
Owner FUZHOU PHOTOP QPTICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com