METHOD FOR OPTICAL MONITORING OF SURFACE IN LASER IMPACT AREA AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2014 - IPC G01N21/63 

Abstract RU 2520944 C2

FIELD: measurement equipment.

SUBSTANCE: invention relates to measuring equipment and can be used at measuring of surface temperature in the area of laser impact. Spectral lines of surface heat emission recording by a pyrometer and spectral bands of surface heat emission recording by a video camera and spectral lines of illumination source radiation are placed in the spectral passband of a galvoscanner on both sides of the laser radiation spectral line in its close proximity. A device comprises a galvoscanner with a lens, an optical pyrometer and a video camera with an objective as well as a rotary mirror with elliptic area in the centre with coating providing for 100% reflection at the laser wave length or an elliptic hole, and the mirror periphery zone has either high transmission in the area of the spectrum beyond the laser radiation band or wide-band reflection coating.

EFFECT: invention provides for complete monitoring of surface in the area of laser impact with minimal error when mass production optic equipment is used.

4 cl, 4 dwg

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RU 2 520 944 C2

Authors

Chivel' Jurij Aleksandrovich

Dates

2014-06-27Published

2011-09-13Filed