杨红, 汪建刚, 姜昌录, 赵宝珍. 红外光学系统透射比测量[J]. 应用光学, 2006, 27(supp): 61-64.
引用本文: 杨红, 汪建刚, 姜昌录, 赵宝珍. 红外光学系统透射比测量[J]. 应用光学, 2006, 27(supp): 61-64.
YANG Hong, WANG Jian-gang, JIANG Chang-lu, ZHAO Bao-zhen. Transmittance measurement for IR optical systems[J]. Journal of Applied Optics, 2006, 27(supp): 61-64.
Citation: YANG Hong, WANG Jian-gang, JIANG Chang-lu, ZHAO Bao-zhen. Transmittance measurement for IR optical systems[J]. Journal of Applied Optics, 2006, 27(supp): 61-64.

红外光学系统透射比测量

Transmittance measurement for IR optical systems

  • 摘要: 讨论了光学系统透射比与辐照度、数值孔径之间的理论关系。介绍了目前测量红外光学系统透射比的几种方法:积分球法、大面积均匀源法、全孔径透射比测量和双光路法。通过对其原理和可实现性进行比较,认为建立在大面积均匀法基础上的测量装置简单易行,且测量快捷、准确、可靠,能达到比较满意的效果。采用大面积均匀源法对红外标准透射比板进行了测量,获得了两组实验数据,并对采用大面积均匀源法测量透射比的装置进行不确定度分析,分析结果表明:测量结果的不确定度为2.6%。

     

    Abstract: The relation of transmittance versus irradiance and numerical aperture (NA) of optical systems is discussed in this paper. Some methods of measuring the transmittance of IR optical systems are introduced, such as the method of integrating sphere, method of broadarea uniformity source, method of full aperture transmittance measurement and method of dual beam paths. The differences between theory and realizability of the above mentioned methods are also put forward. The measurement setup based on the method of broadarea uniformity source is regarded as the one which can measure the transmittance quickly, accurately and reliably, and can achieve a satisfactory effect by comparison with all the methods for transmittance measurement. The IR standard transmittance board was measured by the method of broadarea uniformity source, and two sets of experiment data were obtained. The uncertainty of the instrument which adopts the method of broadarea uniformity source is analyzed. The result indicates that the value of uncertainty is 2.6%.

     

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