INTERCOM SYSTEM BASED ON LASER DIODE Russian patent published in 2017 - IPC H04B10/11 

FIELD: physics.

SUBSTANCE: intercom system includes a computer, a monitor, a microphone, an input unit of the three-stage LF amplifier, a target unit of the two-pin power amplifier, a unit of ADC-DAC, a dividing capacitor, a switching device-key, an adjusting variable resistor, a DC voltage source, a semiconductor laser diode, a light-sensitive image sensor, a unit of the optical stabiliser of precise aiming and horizontal-vertical position in space, a unit of homing and retention of civil-military targets by the laser beam in the infrared range of electromagnetic waves. The computer, the input unit of the three-stage LF amplifier, the target unit of the two-pin power amplifier, the unit of the multichannel ADC-DAC, the dividing capacitor, the switching device-key, the adjusting variable resistor, the DC voltage source, and the semiconductor laser diode are connected in series with each other, the computer is connected in parallel with the monitor, the input unit of the three-stage LF amplifier is connected in parallel with the microphone, the semiconductor laser diode is mounted on the same optical axis with the focusing lens and is energized from the positive terminal of the DC voltage source to the anode, and its cathode is connected to the source of the switching device-key, the negative terminal of the DC voltage source is connected with the input wire of the variable adjusting resistor, the output wire of which is connected to the drain of the switching device-key, the semiconductor laser diode is made on the basis of the modified crystal, comprises a housing, where an opaque reflective disk and an optical filter, a narrow channel are installed on the same optical axis, which has a collecting focusing micro lens, an adjustable collimator, an absorber and a scattered of photons, the light-sensitive photocell is mounted on the same optical axis with the semiconductor laser diode, the unit of homing and retention of civil-military targets by the laser beam in the infrared range of the electromagnetic waves is mounted between the adjustable collimator and the unit of ADC-DAC, moreover, between the computer and the unit of ADC-DAC there is a feedback for analysis and amplitude-frequency correction of the output control pulses, between the computer, the monitor, the microphone, the input unit, the three-stage LF amplifier, the target unit of the two-pin power amplifier, the dividing capacitor, the switching device-key, the adjusting variable resistor, the DC voltage source, the semiconductor laser diode and the adjustable collimator there is a one-way communication for the data exchange and the definition of temporary disability, the leakage and loss of information on each of these units through the unit of the multichannel ADC-DAC, and between the computer, the adjustable collimator, the unit of the optical stabiliser of precise aiming and horizontal-vertical position in space, and the unit of homing and retention of civil-military targets by the laser beam in the infrared range of electromagnetic waves there is a constant two-way communication for the data exchange through the unit of the multichannel ADC-DAC.

EFFECT: increase of efficiency and reliability of work with intensive cloud cover, various types of precipitation, increase of security and stealth of the transmitted encoded information, at the time of the optical-laser communication session.

12 cl, 3 dwg