Light field projector based on movable LED array and microlens array for use in head mounted display

摘要

The head mounted light field display system (HMD) has two light field projectors (LFP). The two LFPs are one for each eye. Each of the two LFPs has a solid state LED emitter array (SLEA) that functions to couple with a microlens array (MLA). The SLEA and the MLA are provided so that light emitted from the LED of the SLEA reaches the eye from the MLA through a maximum of one microlens. The HMD LFP has a movable solid state LED emitter array that couples to a microlens array that is placed close to the front of the eye without the need for additional relays or coupling optics. The LED emitter array is physically moved with respect to the microlens array to mechanically multiplex the LED emitters, thereby realizing resolution by mechanical multiplexing.