System for acquiring a colour image and an infrared image of a scene

A system for acquiring a colour image (Ivis) and an infrared image (IIR) of a scene, said acquiring system comprising:

• an image-acquiring device, said device being sensitive to visible and infrared wavelengths, comprising:
• a sensor;
• an objective configured to focus light input into the acquiring device onto the sensor, a dual-band bandpass filter being placed in front of the sensor, and between the objective and said sensor;
• a processing module connected to said image-acquiring device and configured to separate, once output by the sensor, the infrared image (IIR) and the visible image (Ivis) and to define at least one signal to be servo-controlled and an associated control setpoint (C), said at least one control setpoint being an infrared-signal control setpoint (CIR) and/or visible-signal control setpoint (Cvisible) depending on which at least one artificial light source is driven;
• the at least one artificial light source illuminating said scene, said at least one source comprising an artificial infrared light source emitting a light signal in the infrared and/or an artificial visible light source emitting a light signal in the visible.