METHOD OF DETERMINING ERROR IN FABRICATING DIHEDRAL ANGLES OF MIRROR PRISM ELEMENTS AND DEVICE TO THIS END (VERSIONS)

摘要

FIELD: physics. ^ SUBSTANCE: invention may be used for high-accuracy control of mirror-prism element production. In compliance with first version, method uses device including rotary table with controlled regular polyhedral prism and two autocollimators with their axis of sight perpendicular to two adjacent faces. Angular positions of prism faces are defined from autocollimator marks of relevant autocollimators to compute errors in dihedral angles. In compliance with second version, method uses device with stationary table with angular mirror that has first and second faces perpendicular to axis of sight of first and second autocollimators. Additionally, autocollimators images are used to define angular positions of angular mirror first and second faces and to computer errors in producing dihedral angles. ^ EFFECT: higher accuracy. ^ 8 cl, 2 dwg