RADIATION RECEIVING DEVICE Russian patent published in 2022 - IPC H04N5/238 G02B26/02 

FIELD: optics.

SUBSTANCE: invention relates to optical instrument making and concerns a radiation receiving device. Device comprises an input optical system, a photodetector, a shutter installed between the input optical system and photodetector with possibility of its input/output from optical path by means of movement unit and return mechanism of shutter. Besides, device comprises shutter retainer provided with control unit and retainer return mechanism. Input of the displacement unit and the input of the control unit can be connected to the power supply of the radiation receiving device. Control unit is configured to control the retainer when supply voltage is disconnected.

EFFECT: provision of possibility of shutter installation into closed position and at termination of supply voltage at minimum power consumption for holding shutter in open position.

1 cl, 3 dwg