15 April 1993 Simplified irradiance/illuminance calculations in optical systems
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Abstract
The optical engineer can apply unit sphere methods, used to find geometrical configuration factors in radiant heat transfer calculations, to calculate similar factors for irradiance and illuminance distributions in many optical systems. This paper illustrates how using a dummy reference sphere of arbitrary radius, and direct ray trace analysis, can greatly simplify photoradiometric calculations while achieving accuracies of better than 1%. Uniform and non- uniform light sources are treated. Examples are presented using different optical configurations and light sources including projection systems, scanners, illuminators, and several imagers.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Donald G. Koch, Donald G. Koch, } "Simplified irradiance/illuminance calculations in optical systems", Proc. SPIE 1780, Lens and Optical Systems Design, 17800F (15 April 1993); doi: 10.1117/12.142808; https://doi.org/10.1117/12.142808
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