红外光学传递函数测试装置中图像分析器光学系统的设计

焦明印;康文莉;杨红

应用光学 ›› 2006, Vol. 27 ›› Issue (supp) : 87-89.

应用光学 ›› 2006, Vol. 27 ›› Issue (supp) : 87-89.

红外光学传递函数测试装置中图像分析器光学系统的设计

  • 焦明印,康文莉,杨红
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Optical design of image analyzer for infrared OTF testing equipment

  • JIAO Ming-yin,KANG Wen-li,YANG Hong
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摘要

根据数字傅里叶变换法测量光学传递函数的原理,分析了图像分析器的功能及其技术要求,给出了用于8μm~12μm波段红外传函测试装置的图像分析器光学系统的设计过程和结果。该设计采用准直光路方案,在光路中引入折转反射镜以使其结构紧,并使滤光片放置在平行光路中,以消除由于入射角度不同带来的透过率偏差及放置不同滤光片时引入的光程差对像面位置的影响。该系统物方数值孔径为0.85,垂轴放大倍率约1.5×,最大口径Φ25mm,试验验证该设计达到测试要求。

Abstract

The qualification and function of image analyzer are analyzed, and the design process and results of optical system for the image analyzer in 8μm~12μm waveband OTF testing equipment are expounded according to the principle of the digital Fourier transfer analysis method for measuring the OTF. The scheme of the collimated beam path was adopted in this design, in which a catadioptric mirror was introduced into the beam path for compact system construction and for putting the filter in the parallel beam path to eliminate the transmissivity deviation coursed by the different incident angles and the effect of optical path difference introduced by different filters on the image plane location. The object NA of the system is 0.85. The perpendicular axis magnification ratio is 1.5× and the maximum aperture is Φ25mm. The system is verified by the experiments.

关键词

光学测量 / 传递函数 / 光学设计

Key words

OTF / optical measurement / optical design

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焦明印, 康文莉, 杨红. 红外光学传递函数测试装置中图像分析器光学系统的设计. 应用光学. 2006, 27(supp): 87-89
JIAO Ming-yin, KANG Wen-li, YANG Hong. Optical design of image analyzer for infrared OTF testing equipment. Journal of Applied Optics. 2006, 27(supp): 87-89

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