FIELD: optical engineering, in particular, engineering of devices for rotating optical radiation used for encoding and decoding optical images and signals, and devices for measuring optical characteristics depending on position of radiation polarization plane.
SUBSTANCE: method includes letting circularly polarized radiation through crystalline plate being researched and producing conoscopic image in form of double spiral. If branches of spirals during observation are coiled in clockwise direction towards the beam, crystalline plate being researched is assumed to rotate radiation polarization plane to the right. If branches of spirals are coiled in counterclockwise direction, crystalline plate being researched is assumed to rotate radiation polarization plane to the left.
EFFECT: sign of rotation of radiation polarization plane in active crystalline plate of any thickness being examined is determined with increased probability.
2 dwg
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