Patent ID: 11940758
Assignee: ENVISICS LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A method of controlling a light detection and ranging, “LiDAR”, system arranged to make time of flight measurements of a scene, the LiDAR system comprising a holographic projector and a detector;
said holographic projector comprising a spatial light modulator arranged to display a light modulation pattern comprising a hologram and grating function having a periodicity, and a light source arranged to illuminate the displayed light modulation pattern and project a structured light pattern corresponding to the hologram on a replay plane;
wherein the detector has a field of view defined on the replay plane; the method comprising:
providing a control instruction to the holographic projector to project light from the light source, via the spatial light modulator, towards the scene;
receiving a detection signal, from the detector, indicating a reflection of the light from the scene;
making a determination of distance information related to the scene, based on the detection signal received from the detector;
selecting a parameter for a subsequent operation of the holographic projector, based on the determined distance information; and
providing a control instruction to the holographic projector to perform said subsequent operation.