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Zoom fisheye lens system and design method

A fisheye lens and design method technology, applied in the field of applied optics, can solve the problems of volume, weight, power consumption, etc., and achieve the effect that is beneficial to processing

Active Publication Date: 2020-01-10
SHANGHAI DIANJI UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Another disadvantage of this technology is that it brings difficulties in terms of volume, weight, power consumption, etc.

Method used

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  • Zoom fisheye lens system and design method
  • Zoom fisheye lens system and design method

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0034] Basic technical principle of the present invention:

[0035] Usually the fisheye lens system is composed of the front group of negative meniscus lenses with compressed field of view and the rear group of objective lenses of the conventional optical system. To achieve imaging with a large field of view and a high relative aperture, the fisheye lens must use a large The relative cross-sections of the beams deliver extremely oblique beams....

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Abstract

The invention relates to a zoom fisheye lens system and a design method, wherein the lens system is provided, along the optical axis from an object end to an imaging end, with a front lens group and arear lens group respectively having negative and positive focal power; and the design method comprises the following steps of step 1, determining the relevant parameters of each negative meniscus lens for the preliminary design of the front lens group; step 2, designing and selecting the structure and parameters of the rear lens group according to the image field space field angle and aberrationdistribution of the optical system of the front lens group, and constituting the initial structure of the zoom fisheye lens system; step 3, carrying out preliminary design of the total optical path ofthe system; and step 4, performing component division on the front group and the rear group of the initial structure of the fisheye lens, further optimizing and designing the initial structure by using related software, and finally obtaining a zoom fisheye lens system with a change in the field of view from 180 degrees to 90 degrees and a corresponding system focal length from 8mm to 16mm. Compared with the prior art, the invention has the advantages such as a wide focal length range and many application fields.

Description

technical field [0001] The invention relates to the technical field of applied optics, in particular to a zoom fisheye lens system and a design method. Background technique [0002] When the viewing angle of the optical system is not large, the optical axis can be rotated and scanned within a certain range according to a certain rule through the electromechanical structure and servo control, so as to increase the angular space of information perception. This is also the most widely used method of expanding the perspective in engineering. [0003] In order to ensure the real-time performance of information acquisition, the use of multiple lenses for field of view stitching is another practical technology to expand the space of information perception angle, and it is also a commonly used method at present. This technology uses a large field of view, high-resolution staring imaging sensor, advanced electronic component circuits and signal processing technology, and its outstan...

Claims

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Application Information

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IPC IPC(8): G02B15/177G02B27/00
CPCG02B15/177G02B27/0012
Inventor 侯国柱
Owner SHANGHAI DIANJI UNIV
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