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Processing method of miniature spherical or aspherical lens array

A kind of aspheric lens and miniature technology, which is applied in the field of optical device processing, can solve the problems such as difficult to process micro and array lenses, and achieve the effect of solving difficult to process micro and array lenses, easy to popularize and apply, and easy to process

Active Publication Date: 2012-08-01
吉林省钜鸿智能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention discloses a method for processing micro-spherical or aspheric lens arrays, which solves the problem that conventional micro-optical device processing methods are difficult to process micro and array lenses

Method used

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  • Processing method of miniature spherical or aspherical lens array
  • Processing method of miniature spherical or aspherical lens array
  • Processing method of miniature spherical or aspherical lens array

Examples

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Comparison scheme
Effect test

Embodiment 1

[0029] In the method, figure 1 It is used for processing the optical glass substrate 10 of the microlens array, and its upper surface needs to be polished in advance to meet the requirements of the optical mirror surface.

[0030] according to figure 2 Use a grinding wheel 20 with multiple grooves to grind two groups of mutually perpendicular grooves 11 on the glass surface, and form some square columns between the two groups of grooves, and these regularly arranged square columns form a square column arrays, such as image 3 shown.

[0031] Figure 4 The ultrasonic grinding head 51 shown is connected with the ultrasonic horn 52, and the ultrasonic grinding head 51 is composed of a plurality of cylindrical pits 31, whose shape is shown in Figure 5 . Use this grinding head to grind the square cylinder into a cylinder, such as Figure 7 , Figure 8 Shown is an ultrasonic micro grinding head 30 with a single pit and the processed micro cylinder 12. The depth of the pit ...

Embodiment 2

[0035] Process a miniature non-linear optical lens array, the overall dimensions of the device are 32mm×32mm×4.5mm, the height of a single lens micro cylinder 14 is 2.5mm, and the diameter of the upper circle of the micro cylinder 12 is 2.6mm and the diameter of the lower circle is 3.0mm The non-linear change, the lens arrangement is 5×5 array, and the lens material is G9 optical glass.

[0036] The production process is divided into the following steps:

[0037] 1. (1) Design and process the ultrasonic four-hole grinding head 51, the depth of the cylindrical pit is 3.5mm, the diameter is 3.1mm, and the distance between adjacent pit sides is 3.0mm. The material used for the grinding head is tool steel. (2) Design and process ultrasonic single-hole grinding head 30, refer to Figure 8 In 31, the diameter of the large circle of the pit is 3.0mm, and the diameter of the small circle is 2.7mm. The material is tool steel. (3) Refer to Figure 9 Design and process the polishing...

Embodiment 3

[0043]Process a miniature spherical optical lens array, the overall dimensions of the device are 23mm×20mm×4.5mm, the height of a single lens micro cylinder 14 is 1.2mm, the diameter of the upper circle of the micro cylinder 12 is 1.9mm, and the diameter of the lower circle is 2.4mm, The side of the micro-pillar is a spherical surface with a diameter of 2.4mm, the lenses are arranged in a 5×4 array, and the lens material is G9 optical glass. Process relevant abrasive tools according to the above parameters:

[0044] (1) Design and process the ultrasonic four-hole grinding head 51, the depth of the cylindrical pit 31 is 1.6mm, the diameter is 2.6mm, and the distance between adjacent pit sides is 2.8mm; the material used for the grinding head is tool steel.

[0045] 2) Design and process ultrasonic single-hole grinding head 30, refer to Figure 8 Among them, the diameter of the large circle of the pit 31 is 2.5mm, and the diameter of the small circle is 2.0mm; the material is t...

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Abstract

The invention relates to a processing method of a miniature spherical or aspherical lens array. A grinding wheel with a plurality of groove grinding edges is utilized to respectively grind transverse and vertical grooves which are perpendicular to each other on a glass substrate to form a rectangular cylinder array with the end face as a square. The rectangular cylinder is ground into a spherical or aspherical miniature lens base body through a grinding head with a recessed grinding edge in rotating mode. A miniature grinding head with the same structure and smaller granularity is used for conducting fine grinding on the miniature lens base body, and a miniature polishing head is used for conducting polishing on the miniature lens base body receiving fine grinding. Grinding agents are required to be added continuously during the polishing process, and the granularity of the grinding agents needs to be replaced continuously from coarse to fine till the smooth and clean degree achieves the design requirements.

Description

[0001] technical field [0002] The invention provides a processing method for a micro-spherical or aspheric lens array, which is used for the processing and manufacturing of micro-optical devices and belongs to the field of optical device processing. technical background [0003] With the development of the economy, the demand for micro-devices is getting stronger and stronger. The demand for microscopic optical devices is also increasing rapidly, for example, they are used in important fields such as aerospace, national defense, and medical treatment. Therefore, the research and discussion on micromachining technology and technology is deeply valued by people. [0004] With the reduction of the processing size, especially the array type device, due to the poor structure symmetry, the processing difficulty increases significantly, and it is often difficult to process micro-optical devices using traditional processing methods. At present, the ultra-fine processing of micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/04
Inventor 马仁祥李长华李彦姚振罡
Owner 吉林省钜鸿智能技术有限公司
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