RANGEFINDER WITH COMBINED LASER SEMICONDUCTOR EMITTER Russian patent published in 2017 - IPC G01C3/08 

FIELD: measuring equipment.

SUBSTANCE: laser rangefinder with a combined laser semiconductor emitter contains a receiving device and a transmitter including an objective and separately placed laser emitters made in the form of a semiconductor laser diode. Herewith a collector lens is installed in front of the laser diode emitting area, the radiating areas are located in the plane perpendicular to the optical axis of the lens, and each collector lens is made in the form of a cylindrical lens, the focus of which is displaced parallel to the optical axis of the lens by a distance z₁ from its radiating area to the side opposite to the lens, the center of the cylindrical lens is displaced perpendicular to the optical axis of the lens and parallel to the radiating area by a distance _yN away from the optical axis of the lens so that the optical axes of the laser emitters intersect at the focus of the lens of the transmitting device. In addition, the radiating areas are located in the focal plane of the system from the lens and the cylindrical lens. The parameters of the optical elements of the laser rangefinder satisfy the condition , where ψ - is the divergence angle of the laser emitter radiation in the plane perpendicular to the radiating laser transition; D₂ - is the light diameter of the cylindrical lens; f - is the focal length of the cylindrical lens; D₀ - is the light diameter of the lens; - is the distance between the cylindrical lenses; Δ_N - is the distance between the radiating areas; z₁ and z₂ - are the distance from the radiating area to the lens focus and from the lens focus to the objective focus; z₁=f-D₂/2tg(ψ/2); z₂=f²/z₁; N=(R_N/R₁)² - is the number of laser emitters; R_N - is the given range of the rangefinder; R₁ - is the range with one radiator.

EFFECT: providing the maximum range of the rangefinder with the minimum dimensions of the device.

5 dwg