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对于发光面光亮度的测量,物象间的距离是影响其测量误差的因素之一。本文试对均匀与非均匀发光面光亮度测量中距离因素的影响作一探讨,供同行参考。一、均匀发光面的情形所谓均匀发光面,指的是发光面内不存在光亮度为零的区域。设被测目标发光部份的亮度为B,目标经过物镜聚焦成像,其像平面的光照度E为:
For the luminous surface brightness measurement, the distance between objects is one of the factors that affect the measurement error. This article tries to study the influence of the distance factor on the brightness measurement of uniform and non-uniform luminescent surface, for the peer reference. First, the uniform light-emitting surface The so-called uniform light-emitting surface, refers to the light-emitting surface does not exist in the brightness of zero area. Set the brightness of the measured part of the light-emitting part of B, the target through the objective lens focusing imaging, the image plane illumination L E: