Stray radiation estimation and interreflection correction for infrared transmittance measurement

Lin Lin

doi:10.1117/12.22652

1 December 1990 Stray radiation estimation and interreflection correction for infrared transmittance measurement

Lin Lin

Proceedings Volume 1331, Stray Radiation in Optical Systems; (1990) https://doi.org/10.1117/12.22652
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

For an infrared spectrophotometer with the convergent beam in the sample compartment the stray radiation is estimated. The efficient method with different filters used to test the stray radiation is discussed. The sample-induced interreflection sources are analyzed. The method to eliminate the intereflection is introduced. It avoids the oblique errors and did not need complicated calculation. The stray radiation ratio estimations from 2.Ln to 15.tfl wavelength are less than O.4 transmittance unit. The interreflection correction improves the transmittance measurement accuracy more than ten times.

Citation Download Citation

Lin Lin "Stray radiation estimation and interreflection correction for infrared transmittance measurement", Proc. SPIE 1331, Stray Radiation in Optical Systems, (1 December 1990); https://doi.org/10.1117/12.22652

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