FIELD: optical devices. SUBSTANCE: scanning system has photodetector, objective, flat mirror disposed between the objective and photodetector inclined to optical axis. The mirror is mounted for rotation. The objective is concentric one and has center coinciding with axis of rotation of the flat mirror disposed at the base of hemispherical lens and made with axial hole. Concave mirror is made onto hemispherical lens. The device may be provided with N concave mirrors mounted for rotation for scanning for the second coordinate. EFFECT: improved efficiency. 2 cl, 2 dwg
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Authors
Dates
1995-05-27—Published
1991-04-26—Filed