SU1315796A1 - Interfereometer for measuring turn angles of object - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to extend the measurement range by performing the light guide channel. The light beam from laser 2 is directed to a beam splitter 3, which forms two beams. The passing beam is directed to the mirror of the system 4, and further, reflecting between the mirrors of the system 4, falls on the mirror 5. The light guide from the system 4 allows to increase the length of the beam. Further, the same beam, reflecting from the mirror 5, which is installed normally to this beam, passes along the same path between the mirrors of system 4 and again hits the beam splitter 3 and, reflecting from it, is directed to the distinct block 7. The reflected beam is directed to mirror 6 and, reflected from it, through beam splitter 3 is also directed to reading unit 7. In reading unit 7, the transmitted and reflected rays interfere and record the number of pulses proportional to the angular displacement of shaft 1. 1 Il. (L m g Y; 0 05

Description

The invention relates to a measurement technique and is used to install photovoltaic cameras.

The purpose of the invention is the extension of the measuring range by performing the SB pipeline n (its channel.

The drawing shows the scheme of the interferometer.

The interferometer contains a shaft 1 designed for dp bonding with an object (not shown), a laser 2, a beam splitter 3,: forming two beams in one of which, successively along the radiation, a system 4 of two mirrors is attached to the shaft 1, the reflecting surfaces of which are formed one to the other and parallel, and a mirror 5, in the other - another mirror 6, placed in such a way that its reflective plane is perpendicular to the radiation reflected from the splitter 3, the reading unit 7, installed symmetrically to the other mirror 6 relative to beam splitter 3, System 4 is made as a single unit, fastened to shaft 1 at one point so that the radiation transmitted by beam splitter 3 falls on the reflecting face of one of the mirrors of system 4, In the mirror 5 there is a hole in the center, and it is placed in the plane perpendicular to radiation transmitted through a system of 4 mirrors.

The interferometer works as follows.

The light beam from the laser 2 is directed to the beam splitter 3, which forms two light beams — a passage — both glow and reflected. The passing beam is directed onto the mirror of system 4 and further, reflected n times between the mirrors of system 4, hits the mirror 5, and the beam at the output of parallel mirrors is always parallel to the beam at the entrance. The light guide from the system of 4 mirrors allows to increase the beam path length with limited dimensions. Further, the same beam, reflecting from the mirror 5 which is set normally to this

Editor L, Kozoriz

Compiled by Techred M. Ho

Order 2344/42 Circulation b77 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, W-ZZ, Raushsk nab 4/5

Production and printing company, Uzhgorod, st. Project, 4

the beam passes through the same path between the mirrors of the system 4, again hits the beam splitter 3 and, reflected from it, is sent to the reading unit 7, the reflected beam is directed to the mirror 6 and, reflecting from it, through the beam splitter 3 also It is sent to readout unit 7, where it interferes with the transmitted beam.

When shaft 1 rotates, the angle between the beam passing through system 4 changes and the path length of this beam changes accordingly.

In the readout unit 7, the interference of the transmitted and reflected rays occurs and the number of pulses proportional to the angular displacement of the shaft 1 is recorded,

Claims (1)

Invention Formula An interferometer dp measuring the angles of rotation of an object containing a shaft, intended for bonding with an object, a laser, a beam splitter, forming two beams, in one of which a system of two mirrors are successively attached to the shaft and reflecting the surfaces facing each other and parallel, and the reflector, and in the other - another reflector, spaced in such a way that its reflection plane is perpendicular to the radiation: EYuu, turned from the beam splitter, and the readout block, the installed symmet similarly to another reflector with respect to the beam splitter, characterized in that, in order to expand the measurement range, the mirror system is made as a single unit attached to the shaft at one point so that the radiation, which is better than the beam splitter, falls on the reflecting face of one of the system mirrors, and in the reflector, a hole is made in the center, and it is placed in a plane perpendicular to the radiation, about the system of mirrors. Proofreader L, Pilipenko