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首页> 外文会议>International symposium on advanced optical manufacturing and testing technologies >Switch-zoom Optical System Design of Large Aperture Ground-based Photoelectric Detection
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Switch-zoom Optical System Design of Large Aperture Ground-based Photoelectric Detection

机译：大孔径地面光电检测的开关变焦光学系统设计

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摘要

Binary optics can be used to increase optical performances, decrease size and weight, and decrease systems costs in numerous applications. By means of hybrid diffractive-refractive, a switch-zoom optical system of catadioptric large aperture ground-based photoelectric detection is designed. The characteristic of the system is that it is a compact optical system without moving parts which can get two focal lengths. And the quality of image approaches the diffraction limited. Ritchey-Chretien (R-C) mirror and a field lens are common for long-focus system and short-focus system. Two refract groups transmitting optical system are used for zooming, In order to satisfy the demand of energy regulation, it is designed afocal beam between field lens and later refract optical system. Filter and variable density plate are placed in it to guarantee the imaging quality. The focal length is 3750mm and F number is 7.5 for the long-focus system, and the focal length is 1850mm and F number is 3.75 for the short-focus system. Former part and later lens of the system are both perfect imaging. They can be fabricated and detected independently. So the design demand can be satisfied better and the imaging quality can be improved.
机译：在许多应用中，二进制光学器件可用于提高光学性能，减小尺寸和重量以及降低系统成本。通过混合衍射-折射，设计了折反射大孔径地面光电检测的变焦光学系统。该系统的特点是它是一个紧凑的光学系统，没有可以得到两个焦距的移动部件。并且图像质量接近衍射极限。 Ritchey-Chretien（R-C）反射镜和物镜在长焦距系统和短焦距系统中很常见。变焦采用两个折射组传输光学系统，为满足能量调节的需求，设计了物镜与后来的折射光学系统之间的共焦光束。将滤光片和可变密度板放置在其中以确保成像质量。对于长焦系统，焦距为3750mm，F值为7.5;对于短焦系统，焦距为1850mm，F值为3.75。系统的前部镜头和后部镜头都可以完美成像。它们可以独立制造和检测。这样可以更好地满足设计需求，提高成像质量。

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