LASER ILLUMINATOR FOR ACTIVE-PULSE OPTOELECTRONIC DEVICES (VERSIONS) Russian patent published in 2011 - IPC G02B17/08 F21S8/00 

FIELD: physics.

SUBSTANCE: illuminator comprises a semiconductor laser and a three-channel optical system. The first channel is a mirror-lens, the second and third channels are lenses lying in the central shielding zone of the first channel. The following relationships are satisfied: f'₁ > f'₂ > f'₃ , where f'₁, f'₂, f'₃ are focal distances of the first, second and third channels of the optical system.

EFFECT: high rate of detecting objects owing to simultaneous provision of three illumination fields and simple design due to absence of moving elements in the optical system.

2 cl, 4 dwg, 1 tbl