Large-target-surface ghost-image-eliminating fixed-focus optical system
An optical system and large target surface technology, applied in optics, optical components, instruments, etc., can solve problems such as unsatisfactory imaging quality, disregarding ghost image correction, target image interference, etc., and achieve good imaging quality, small distortion, and easy processing low cost effect
Active Publication Date: 2021-11-09
西安科佳光电科技有限公司
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[0005] The present invention solves the problems caused by ghost images when the optical system design in the prior art generally does not consider ghost image correction, the detection range is small, and it is only suitable for target detection under conventional illumination light intensity. Target imaging will cause some interference to the target image, and the technical problem of unsatisfactory imaging quality is to provide a fixed-focus optical system with a large target surface to eliminate ghost images
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[0038] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments do not limit the present invention.
[0039] The invention provides a fixed-focus optical system for eliminating ghost images with a large target surface, which can be matched with a larger target surface detector and has a better ghost image suppression function. It includes a lens group front group, a diaphragm 10 and a lens group rear group arranged in sequence along the light incident direction.
[0040] Such as figure 1, wherein, the front group of the lens group includes the first lens 1, the second lens 2, the third lens 3, the fourth lens 4 and the fifth lens 5 arranged in sequence along the optical axis direction from the object plane, and the rear group of the lens group includes the Starting from the object plane, the sixth lens 6, the ...
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The invention belongs to a fixed-focus optical lens, and aims to solve the problems that an existing ghost image suppression optical lens system generally does not consider ghost image correction during design, is small in detection range, is only suitable for target detection under conventional illumination light intensity, and when target light energy is relatively strong or relatively weak, non-target imaging caused by a ghost image can form certain interference on a target image and the imaging quality is not ideal. A large-target-surface ghost-image-eliminating fixed-focus optical system comprises a front lens set, a diaphragm 10 and a rear lens set which are sequentially arranged in the light incidence direction, and the diaphragm is arranged between a fifth lens of the front lens set and a sixth lens of the rear lens set.
Description
technical field [0001] The invention belongs to a fixed-focus optical lens, in particular to a fixed-focus optical system for eliminating ghost images with a large target surface. Background technique [0002] In recent years, with the continuous advancement of science and technology, and the continuous improvement of human demand for various technologies, industries such as security monitoring, intelligent machine vision, and industrial automation visual inspection have developed rapidly, with continuous technological innovation and product upgrading. The collection, processing, and judgment of image data information through technical means such as visual image collection and image algorithms have been gradually popularized in various fields of society. How to collect images with larger range and less distortion in various environments is the key issue of visual image acquisition. [0003] In addition, in the process of visual image acquisition and processing, all informat...
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IPC IPC(8): G02B13/00
CPCG02B13/00G02B13/005
Inventor 安飞杨芝艳韩路张建
Owner 西安科佳光电科技有限公司