DEVICE FOR MEASURING THE RELATIVE ANGULAR POSITION OF REFLECTORS Russian patent published in 1997 - IPC

FIELD: measurement technology. SUBSTANCE: device has autocollimator 1, beam collinear transfer assembly 2, first and second flat mirror reflectors 3, 4 oriented in parallel to each other and interconnected optically by means of beam collinear transfer assembly 2 and autocollimator 1. In addition, device has third 5 and fourth 6 mirror reflectors. Third reflector 5 is positioned at arbitrary angle to first reflector 3. Fourth reflector 6 along with first reflector 3 form dihedral angle equal to half the dihedral angle formed by first 3 and third 5 reflectors. Second 4 and fourth 6 reflectors are fixed to each other. Device may be provided with wedge compensators 7, 8, 12 for adjustment. EFFECT: higher result of measurement. 1 dwg