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Manufacturing and imaging analysis of non-uniform curved microlens array

A microlens array and curved surface technology, applied in the field of optics, can solve the problems of low precision, low success rate, and complicated production of curved surface bionic compound eye samples, and achieve the effects of improving imaging quality, high success rate, and good light transmission

Inactive Publication Date: 2016-03-23
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of this structure is relatively complicated, and usually adopts photoresist hot-melt method and laser direct writing photolithography method. These methods not only need a long time, but also have high cost and low success rate. The accuracy is not high

Method used

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  • Manufacturing and imaging analysis of non-uniform curved microlens array
  • Manufacturing and imaging analysis of non-uniform curved microlens array

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Experimental program
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Embodiment Construction

[0026] The fabrication and imaging analysis of the non-uniform surface microlens array includes the following process steps:

[0027] Step 1. Design the structure of the microlens array with non-uniform curved surface. The structure is arranged in a ring, and every six ommatidia lenses can form a hexagon. The purpose of this design is to meet the requirements of high filling ratio . Inhomogeneity means that the curvature, radius, focal length, and crown height of each group of ommatidia lenses are different, and the order decreases from level 0 to level 3, so that each ommatidium lens can focus on the plane detector , improving the imaging quality of the marginal ommatidium lens.

[0028] Step 2. Put the metal material (1) with the length, width and height of 100mm, 100mm and 26mm respectively on the precision micro-miniature machine tool, select ball end milling cutters with different diameters, and first adopt the method of layered milling and parallel cutting. Rough machi...

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Abstract

The invention discloses a manufacturing method and imaging analysis of a non-uniform curved microlens array. The method comprises two parts: machining a curved microlens array mold by adopting a precision micro machine tool; and casting liquid PDMS (Polydimethylsiloxane) into the machined curved microlens array mold to obtain a curved microlens array sample. Compared with a uniform curved microlens array, the imaging quality of an edge lens can be improved, so that the imaging quality of the whole curved microlens array is improved. The manufacturing method is simple and low in cost and does not need complex equipment, the machined mold can be reused with high success rate, and the cured PDMS has strong chemical stability and high transmittance.

Description

technical field [0001] The invention belongs to the field of optical technology, and relates to an optical imaging system, in particular to the manufacture and imaging analysis of non-uniform curved surface micro-lens arrays. Background technique [0002] With the continuous development of science and technology, optical imaging systems are widely used in every field, such as applications in guidance systems, applications in remote sensing imaging, applications in infrared night vision devices, applications in medical equipment, etc., so People's requirements for it are also constantly increasing, hoping that it will develop in the direction of smaller volume, lighter weight, and larger field of view. Therefore, bionic compound eyes have become a frontier topic of research. [0003] At present, most of the bionic compound eyes have a planar structure. Although the manufacturing process is simple, it cannot meet the requirements of a large field of view. In order to increas...

Claims

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Application Information

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IPC IPC(8): G02B3/00
CPCG02B3/0025G02B3/0037
Inventor 郝永平许马会刘凤丽
Owner SHENYANG LIGONG UNIV