MODE AND ARRANGEMENT FOR DEFINITION OF ROUGHNESS OF A SURFACE Russian patent published in 2007 - IPC G01B11/30 

FIELD: the invention refers to measuring technique.

SUBSTANCE: an arrangement for definition of roughness of a surface has a laser, in-series located along the laser radiation a half-transmitting mirror installed under an angle of 45⁰ to the optical axle of the arrangement and a photo receiver electrically connected with a measuring block. The arrangement has a spheroconic system, a diaphragm rigidly fixed on the photo receiver, a unit of displacement of the photo receiver along the axle of the arrangement. At that the optical spheroconic system is located between the half-transmitting mirror and the diaphragm on the optical axle of the arrangement.

EFFECT: increases accuracy and reliability of definition of roughness of a surface.

2 cl, 2 dwg