REFERENCE INSTALLATION OF LASER RADIATION POWER UNIT AND OPTICAL FIBER GUIDE THEREFOR Russian patent published in 2018 - IPC G01J1/10 G02B6/02 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of optical measurements, namely, to energy photometry, and can be used as part of a reference technique for metrological support of high-precision verification of means of measuring the average power of collimated laser radiation. Optical fiber guide is made in the form of a hollow tube with reflective inner and outer surfaces. At one end, the tube is equipped with a diaphragmatic cooling radiator, which cuts off the peripheral luminous flux, which does not fall into the cavity of the tube. On the opposite end of the tube, a sharpening chamfer is made from the outside. Reference installation for reproducing and transmitting a unit of power of collimated laser radiation comprises an absorber and a photometric sphere coaxially located in front of the entrance window of the absorber the way to exclude their mechanical and thermal contact. Output opening of the photometric sphere completely overlaps the inlet window of the absorber. Installation is provided with said optical fiber guide installed in the entrance aperture of the photometric sphere in a sliding fit. In this case, the cooling radiator is located outside the entrance aperture of the photometric sphere, and the tube passes along its diameter so that its free end is located in the output aperture of the photometric sphere.

EFFECT: increase the accuracy of reproduction and transmission of a unit of power of collimated laser radiation.

19 cl, 2 dwg