Patent ID: 11917123
Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. A light projection system, comprising:
a light source configured to provide a homogenous output beam of light;
illumination shaping optic elements configured with at least one of a predetermined cone angle, numerical aperture, and F-number;
a spatially-dependent, angular light modulator (ALM) having a plurality of pixels, each of the plurality of pixels having one input pupil and N diffraction order pupils, the ALM positioned such that the output beam is incident on the plurality of pixels, wherein the N diffraction order pupils are elongated;
wherein the at least one of the predetermined cone angle, numerical aperture, and F-number of the illumination shaping optic elements prevents contaminating light from entering an incorrect pupil;
a processor coupled to the ALM to provide discrete diffraction-based beam steering, whereby the ALM projects into one or more diffraction orders at one time.