LASER RANGE FINDER Russian patent published in 2014 - IPC G01C3/08 G01S17/08 

FIELD: instrumentation.

SUBSTANCE: invention relates to laser range finding. A laser range finder comprises a receiving device and a transmitting device including an emitter lens and a laser emitter with its equivalent body of luminescence being placed in the focal plane of the emitter lens by the dimensions A×B. The lens consists of a cylindrical first optic component with focal distance f₁ with its generatrix being perpendicular to the minimal dimension B of the body of luminescence, and the second optic component The second component is symmetrical in respect to the lens axis and has the focal distance f₂ ≥ A/α, where α is an angular size of a remote object corresponding to the maximal dimension A of the body of luminescence by the orientation. Parameters of the optic components comply with the conditions $$f_1=\frac{l_1{\varphi }_2}{\varphi -{\varphi }_2},$$ $$В/\beta \le f\le f_2\frac{tg\left({\theta }_{\alpha }/2\right)}{tg\left({\theta }_{\beta }/2\right)},$$ where f - the focal distance of the system; β - angular size of a remote object corresponding to the dimension B, ϕ₂=1/f₂; ϕ=1/f; l₁=f₂-l; l - distance between the components; θ_α - divergence angle in the plane of dimension A; θ_β - divergence angle of the dimension B. The second optic component is able of adjusting the distance l₂=f₂+Δf₂ to change divergence angles of output radiation.

EFFECT: simplified manufacturing of a device along with keeping the dimensions and efficiency.

5 dwg