Multiview display and method using effective light sources
AssigneeLeia Inc.
InventorsThomas Hoekman, David A. Fattal
Life of this patent
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Abstract
A multiview display and method employ an array of lenses to provide effective light sources from semi-collimated light. The multiview display includes a semi-collimated backlight configured to provide the semi-collimated light, an array of light valves arranged as multiview pixels, and an array of lenses disposed between the semi-collimated backlight and the array of lenses. Each lens of the array of lenses is configured to provide an effective light source at a focal plane of the lens to illuminate a corresponding multiview pixel.
Claims22
A multiview display comprising:
- a semi-collimated backlight configured to emit semi-collimated light having a predetermined collimation factor;
- an array of light valves arranged as multiview pixels;
- and
- an array of lenses disposed between the light valve array and the semi-collimated backlight, each lens of the array of lenses corresponding to a different multiview pixel and being configured to provide from the semi-collimated light an effective light source at a focal plane of the lens and having a size between one quarter and two times a size of a light valve of the light valve array,
- wherein the effective light source is configured to illuminate the corresponding different multiview pixel with directional light beams having directions of views of the multiview display.
A multiview display comprising:
- a light guide configured to emit semi-collimated light having a predetermined, non-zero collimation factor;
- an array of lenses, each lens of the array of lenses being configured to provide an effective light source at a focal plane of the lens using a portion of the semi-collimated light;
- and
- an array of light valves arranged in sets of light valves, each lens corresponding to a different one of the sets of light valves,
- wherein effective light sources provided by the array of lenses are configured to provide directional light beams having directions corresponding to view directions of a multiview image, the array of light valves being configured to modulate the directional light beams to provide a multiview image.
A method of multiview display operation, the method comprising:
- emitting semi-collimated light using a semi-collimated backlight;
- and
- providing a plurality of effective light sources from the semi-collimated light using an array of lenses disposed between the semi-collimated backlight and an array of light valves, each effective light source of the effective light source plurality being provided by a different lens of the array of lenses at a focal plane of the different lens,
- wherein each effective light source is provided having a size between one quarter and two times a size of a light valve of the light valve array and is configured to illuminate a different set of light valves with directional light beams having directions corresponding to view directions of the multiview display.
Dependencies are inferred from the claim text.