OPTICAL SYSTEM FOR SEMICONDUCTOR LASERS Russian patent published in 2010 - IPC G02B27/09 G02B27/30 

FIELD: physics.

SUBSTANCE: optical system includes two channels, each of which consists of a collimating lens 1 and a refracting component 2, and a summation component 3, fitted behind refracting components 2 of both channels and having a surface with a polarisation coating. The channels are turned such that, the radiation polarisation planes of the lasers are mutually orthogonal and their optical axes intersect on the surface of the summation component with polarisation coating and coincide behind the summation component. The polarisation coating completely transmits radiation polarised in the plane of incidence on the given surface, and completely reflects radiation polarised in the perpendicular plane. Focal distances of the lenses, size of the illumination body in the semiconductor junction plane and angular divergence of the beam collimated by the lens are linked by expressions given in the formula of invention.

EFFECT: increased power density and uniformity of angular distribution of radiation intensity with minimum energy losses on components of the optical system and minimal overall dimensions.

9 cl, 6 dwg, 4 ex