Analysis of the spectral correction errors of illuminance meter photometric head under the influence of the diffusing element

Irena Fryc

doi:10.1117/1.1386373

1 August 2001 Analysis of the spectral correction errors of illuminance meter photometric head under the influence of the diffusing element

Irena Fryc

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Optical Engineering, Vol. 40, Issue 8, (August 2001). https://doi.org/10.1117/1.1386373

A commonly used measure of illuminance is a diffuser that is used as the element for the cosine correction of its photometric head. Since the diffusing element is, to some extent, spectrally selective, the spectral coefficient of transmission depends on the luminous flux angle of incidence on the diffuser. The selective characteristic of the transmittance of the diffusing element affects the quality of the spectral correction. Even when both the selective spectral characteristic of the diffusing element and the spectral and cosine characteristics of the diffuser are taken into account in the design of the illuminance meter photometric head, it still contains spectral correction errors. These inherent errors are due to the diffuser.

©(2001) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Irena Fryc "Analysis of the spectral correction errors of illuminance meter photometric head under the influence of the diffusing element," Optical Engineering 40(8), (1 August 2001). https://doi.org/10.1117/1.1386373

Published: 1 August 2001

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