LASER RANGE-FINDER (VERSIONS) Russian patent published in 2008 - IPC G01C3/08 

FIELD: physics; measurements.

SUBSTANCE: proposed range finder consists of a viewing, receiving, transmitting and a projection channel, a beam splitter in form of a dichroic coating and an electronic module, all inside a case. The objective of the viewing channel is made from at least two lens components. The dichroic coating is put onto one of the concave surfaces of the second lens component. Between the first and the second lens component, there is a spherical or aspherical mirror. The mirror is coaxially glued to the inner surface of the first component. The range finder also contains a reflecting prism with mirror coating on the reflecting face. One of the refracting edges is glued to the surface of the second component such that, its reflecting face, at an angle, intersects with the optical axis of the spherical or aspherical mirror and the second lens component. The infrared radiation photodetector is put into the infrared spectrum imaging plane, formed by an optical system, consisting of the first lens component, dichroic coating on the concave surface of the second lens component, spherical or aspherical mirror and the mirror coating on the reflecting face of the prism.

EFFECT: simplification of the design of a laser range finder, providing for minimum loss of visible and infrared radiation.

14 cl, 10 dwg