A unit cell, a system, and a method for detection of light from a target.

A unit cell (100; 200; 300) for detection of light from a target comprises: a light emitting unit (110; 210; 310) for emitting coherent light towards the target; an extractor (120; 220; 320) for extracting part of the emitted coherent light to form reference light; at least one photo-sensitive element (130, 132; 230a-h; 330, 332), each configured to receive light from the target based on emitted coherent light and to receive reference light for detecting both light from the target and reference light; wherein the unit cell (100; 200; 300) defines an optical path for reference light between the extractor (120; 220; 320) and the photo-sensitive element(s) (130, 132; 230a-h; 330, 332), wherein the reference light propagates through the optical path according to a free space propagation model; wherein the extractor (120; 220; 320) is, at least during a measurement, fixed in relation to the photo-sensitive element(s) (130, 132; 230a-h; 330, 332).

Patent Publication Number: EP4657110

Source: EPO

Year publication: 2025

Status: Requested

Technology domains: undefined