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Microlens array method based on spherical surface, and optical system for camera shooting

A micro-lens array and micro-lens technology is applied in the field of photoelectric reconnaissance to achieve the effect of improving the utilization rate of light energy, reducing losses and reducing the difficulty of design.

Active Publication Date: 2022-01-18
河南平原光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can make the arrangement structure of the microlens array simple, easy to manufacture, suitable for engineering applications, and solve the contradiction between the increase of the field of view of optical components and the improvement of resolution, etc.

Method used

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  • Microlens array method based on spherical surface, and optical system for camera shooting
  • Microlens array method based on spherical surface, and optical system for camera shooting
  • Microlens array method based on spherical surface, and optical system for camera shooting

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Embodiment 2

[0116] This embodiment is a drawing method, that is, using a three-dimensional design software, preferably NX software, to establish a body with a spherical surface 1 of r=250mm.

[0117] In NX, execute the operation steps of Embodiment 1. Capture the three-dimensional coordinate values ​​of the center positions of each microlens 2 set on the spherical surface 1 on the digital model, and provide reference for the actual layout of each microlens 2 .

Embodiment 3

[0119] Such as image 3 Shown: the array of microlenses 2 is arranged by the method of the present invention to form a relay microlens array 4 . An optical system for imaging, including a main imaging optical system 3, a relay microlens array 4 and a detector array 5, the positional relationship of the three is set by coupling calculation of focusing parameters of each optical element. The detector 6 is a group of circuit boards with CMOS chips arranged at the focal plane of the single microlens array. The microlens array is divided into 30 channels to achieve a 60°×60° field of view.

[0120] The field of view of a single microlens 2 is 16.4°x12.5°, and the effective field of view is 12.5°x10.84°; the relay lens array 4 is an array of 30 microlenses 2, and the base number of the array is 5x6.

[0121] The relay microlens array 4 in the optical system of this embodiment is set using the microlens array method based on spherical arrangement of the present invention. Compared...

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Abstract

The invention relates to a microlens array method based on a spherical surface, and an optical system for camera shooting, and belongs to the technical field of photoelectric reconnaissance. On the premise that sphere center angles formed by centers of two adjacent micro-lenses on any same latitude line are equal and latitude line included angles between every two adjacent latitude lines are equal, the position of the center of the first micro-lens is set, and then the arrangement positions of the centers of all the micro-lenses on the spherical surface are determined. According to the arrangement of the micro-lenses, the micro-lenses on adjacent latitude lines are arranged in a staggered manner, so that the micro-lenses are diverged by taking any micro-lens as a center, and hexagonal arrangement is formed. As a part of an optical system, the micro-lens array manufactured by the method can remarkably improve the precision of an imaging system of the optical system, improve the light energy utilization rate in a solid angle area covered by an optical field, reduce the loss of light field information and simplify the later data processing amount.

Description

technical field [0001] The invention belongs to the technical field of photoelectric reconnaissance, in particular to a microlens array method based on a spherical surface and an optical system for imaging. Background technique [0002] Today's world is in the era of "information revolution", and the advantage of information acquisition has become a key factor in the victory or defeat of military operations. With the rapid development of optoelectronic technology, various advanced optoelectronic equipment are widely used in high-tech local wars. In addition to basic imaging functions, the practical requirements of the battlefield have put forward more stringent requirements for the performance of optoelectronic reconnaissance systems: increasing the field of view and Realize real-time panoramic observation; improve resolution to obtain accurate interpretation of spatial information, etc. [0003] In the field of macroscopic optical detection, it is required to simultaneousl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00G02B27/00
CPCG02B3/0056G02B27/0012
Inventor 王端天刘丽娴吴应运张永奇付攀龙王小波董光光种娟张晓静
Owner 河南平原光电有限公司