LIGHT OUTPUT SYSTEM WITH REFLECTOR AND LENS FOR HIGHLY SPATIALLY UNIFORM LIGHT OUTPUT

• Main Authors: CURTIS, Kevin, SISSOM, Bradley Jay, HALL, Heidi Leising
• Format: Patent
• Language: English
• Published: 08.02.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SEMICONDUCTOR DEVICES

Abstract of the Disclosure A display system comprising: a reflector comprising an input end; an output end, an even number of faceted sides extending between the input end and the output end, wherein two opposing sides of the reflector have a first curved cross- sectional profile and the remaining sides have a second curved cross-sectional profile different from the first cross-sectional profile. A lens located one focal length away from the input end of the reflector, a light modulating device configured to receive and to modulate light outputted from the lens to form image light; and a stack of waveguides, wherein each waveguide of the stack comprises: a light incoupling optical element configured to incouple image light received from the light modulating device, wherein different light incoupling optical elements are in a path of light of different light emitters; and a light outcoupling optical element, wherein light outcoupling optical elements of some waveguides are configured to output light with different amounts of divergence than light outcoupling optical element of some of the other waveguides of the stack of waveguides, wherein light incoupling optical elements of different waveguides, as seen in a sideview of the waveguide stack, are laterally displaced relative to one another. -43-