LASER RANGER (VERSIONS) Russian patent published in 2013 - IPC G01C3/08 

FIELD: measurement equipment.

SUBSTANCE: laser ranger includes a transmitting channel for formation of a probe radiation beam and its direction to the target, which includes a laser emitter and a transmitting optic system. Receiving channel for receiving the signal reflected with the target, which is parallel to it, includes a photoreceiving device and a receiving lens. Output of the transmitting channel is provided with semi-transparent diffuser, the dispersion coefficient of which is chosen so that energy of radiation reflected from targets located in the range of distances from R₀ to R₁ and supplied to sensitive platform of photoreceiving device corresponds to actuation threshold of the latter. R₀<R₁ - minimum specified measured distance. R₁ - length of shadow zone formed in the range of distances, where fields of vision of transmitting and receiving channels are not overlapped.

EFFECT: reduction of minimum measured distance by reducing the shadow zone of the instrument function.

2 cl, 4 dwg