RANGE FINDER Russian patent published in 1995 - IPC

FIELD: linear measurements. SUBSTANCE: range finder has illumination unit, which has laser 1 and focusing system, made in form one-dimensional phase plate 2; laser 1 and plate 2 are placed in sequence and conjugated optically. The plate is placed onto rotatable unit 3. Device has receiving optical unit, which has focusing system, made in form of one-dimensional phase plate 4, and position-sensitive detector 7. The plate and the photodetector are mounted in sequence and conjugated optically. Plate 4 is placed onto rotatable unit 5. Rotatable units 3 and 5 are synchronized for angle of rotation by means of synchronizer 6. Output of photodetector 7 is connected with input of unit for processing and outputting data of distance 8 to object. EFFECT: improved precision of measurement. 2 dwg