Device for acquiring data from a light beam and a communication system including the device with dual sensor fastened on a stiff frame

A device for acquiring data from a light beam, the device comprising an optical system, a first sensor, and a second sensor, wherein at least the two sensors are in successive alignment on a common axis of the beam, the first sensor including, on the axis of the beam, a transparent zone, in particular an opening, that is transparent to at least a portion of the beam, thereby enabling the second sensor to be illuminated, wherein the optical system distributes a fraction of the energy of the beam simultaneously on the first sensor and on the second sensor, the optical system being a hybrid optical system including an optical element operating in a reflection mode or in a refraction mode, and an optical element operating in a diffraction mode, and wherein the optical system includes a lens focusing the major portion of the beam on the transparent zone of the first sensor, and a diffraction grating, in particular a circular grating, projecting a ring of light on the first sensor, in particular a circular ring centered on the axis of the beam.

A device for acquiring data from a light beam, the device comprising an optical system, a first sensor, and a second sensor, wherein at least the two sensors are in successive alignment on a common axis of the beam, the first sensor including, on the axis of the beam, a transparent zone, in particular an opening, that is transparent to at least a portion of the beam, thereby enabling the second sensor to be illuminated, further including another optical system disposed on the optical axis between the first sensor and the second sensor to focus the light that penetrates through the transparent zone onto the second sensor.