OPTICAL TRANSCEIVING DEVICE Russian patent published in 2010 - IPC G02B23/02 G01S7/48 

FIELD: physics.

SUBSTANCE: device has spherical radome, a laser emitter, a plane mirror lying at an angle to the optical axis, and a lens which is optically connected to a photodetector, the signal from which is transmitted to a unit for receiving commands and processing information which is connected to the laser emitter launching input. The plane mirror has an axial hole through which laser radiation from the laser emitter passes. Radiation reflected from the plane mirror falls in the lens which is made in form of two optical branches. Between the optical branches there is an attenuator operating on the effect of violation of total internal reflection, whose control input is connected to one output of the unit for receiving commands and processing information which is fitted with a circuit for controlling the attenuator using the signal from the laser emitter.

EFFECT: increased protection of the device from intra-device flares and from the signal reflected from an object near the device.

2 dwg