ANGLE REFLECTOR Russian patent published in 2012 - IPC G02B5/122 

FIELD: physics.

SUBSTANCE: angle reflector is made, for example, from quartz in form of a prism with lateral faces 2, 3, 4, in form of a triangle on which there is a reflecting coating. The entrance refracting face 5 of the prism is coated by a dielectric film in form of a circular zone 6 which satisfies the following condition: S_cir.zone=1/2S_entr.face, where: S_cir.zone is the area of the circular zone of the dielectric film, S_entr.face is the area of the entrance refracting face of the prism, wherein the dielectric film is made, for example, from quartz, with thickness h, which satisfies the condition: h=λ/4(n-1), where λ is the radiation wavelength, n is the refraction coefficient of the material of the film, and is deposited such that a circular beam pattern of reflected radiation is obtained.

EFFECT: high reliability and accuracy of location owing to more energy which is distributed on the periphery of the reflected laser beam, high signal-to-noise ratio.

6 dwg