TRICHROMATIC PYROMETER Russian patent published in 2009 - IPC G01J5/00 

FIELD: physics; measuring.

SUBSTANCE: invention concerns to radioactive pyrometry. The pyrometer contains an objective, photodetectors, before each of which is erected the radiation filter, the beam-splitting mirror dividing a radiation flow on two components, a field diaphragm, amplifiers of signals of each photodetector, the microprocessor and the temperature indicator. In one component of a radiation flow it is mounted a two-surface photodetector. Platforms of this photodetector are erected by a tandem so, that a radiation flow, having transited through the first platform, gets on the second platform. In the second component of a radiation flow one-surface photodetector is mounted. The first platform of the two-surface photodetector has a hypersensibility in a visible part of a spectrum, second - in short-wave field of the Ik-spectrum. The one-surface photodetector has a hypersensibility in medium-wave IR-spectrum fields.

EFFECT: increase of accuracy of the measured temperature, due to diversity of lengths of waves of measured.

1 dwg