specbos 2501 and specbos 1211-2  was developed with special consideration of low stray light. However, array spectrometers are limited in stray light to about three orders of magnitude (10^-3) in contrast to stationary double monochromators where a stray light supression up to 10^-6 can be achieved.

In order to reduce stray light in array spectroradiometers while taking advantage of their portability, a stray light correction method according to Yuqin Zong et al. (Simple spectral stray light correction method for array spectroradiometers, Appl. Opt. 45,1111-1119 (2006)) can be applied.

Such possibility is offered for specbos 2501, specbos 2501-UV, specbos 1211-2  as well as specbos 1211-UV-2. For this purpose, the scattered light behavior of the respective instrument will be measured at JETI using pure monochromatic radiation and used after user´s measurements in the form of a scattered light matrix (SLM) to correct the achieved results. This is possible in the supplied radiometric software JETI LiVal  as well as by means of DLLs for own programming.

Stray light correction matrix of a JETI spectroradiometer

Stray light correction matrix for spectroradiometer JETI specbos