Optical see-through near-eye display using point light source backlight
First Claim
1. A near-eye optical see-through display comprising:
- a backlight layer including a plurality of point light sources, wherein the backlight layer comprises a sheet patterned with a sparse array of divots that scatter light through the divots but not between the divots when the sheet is lit from an edge of the sheet to form the point light sources; and
a spatial light modulator (SLM) layer for modulating light from the point light sources, the spatial light modulator layer being located in an optical path between the point light sources and a viewing location at which a user'"'"'s eye is located during use, the spatial light modulator layer including pixels that are controllable to modulate the light from the point light sources such that the light from the point light sources that arrives at the viewing location has a desired intensity and color to display a synthetic image at the viewing location, wherein at least a portion of the backlight layer and at least a portion of the SLM layer are optically transparent to allow a user to view a real scene through the SLM layer and the backlight layer such that the synthetic image appears to be overlaid on a view of real scene, and wherein each pixel in the SLM layer modulates only a portion of the light emanating from the point light sources and arriving at the viewing location such that the synthetic image appears to be in focus when viewed from the viewing location.
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Accused Products
Abstract
According to one aspect, the subject matter described herein includes a near-eye optical see-through display. The display includes a backlight layer including a plurality of point light sources. The display further includes a spatial light modulator (SLM) layer for modulating light from the point light sources. The spatial light modulator is located in the optical path between the point light sources and a user'"'"'s eye. The spatial light modulator layer includes pixels that are controllable to modulate light from the point light sources such that the light that impacts the user'"'"'s eye has a desired intensity and color to display a synthetic image. At least a portion of the backlight layer and the spatial light modulator layer are optically transparent to allow a user to view a real scene through the spatial light modulator layer and the backlight layer such that the synthetic image appears to be overlaid on a view of the real scene. Each pixel in the spatial light modulator layer modulates only a portion of the light emanating from the point light sources such that the synthetic image appears to be in focus to the user'"'"'s eye.
35 Citations
19 Claims
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1. A near-eye optical see-through display comprising:
a backlight layer including a plurality of point light sources, wherein the backlight layer comprises a sheet patterned with a sparse array of divots that scatter light through the divots but not between the divots when the sheet is lit from an edge of the sheet to form the point light sources; and a spatial light modulator (SLM) layer for modulating light from the point light sources, the spatial light modulator layer being located in an optical path between the point light sources and a viewing location at which a user'"'"'s eye is located during use, the spatial light modulator layer including pixels that are controllable to modulate the light from the point light sources such that the light from the point light sources that arrives at the viewing location has a desired intensity and color to display a synthetic image at the viewing location, wherein at least a portion of the backlight layer and at least a portion of the SLM layer are optically transparent to allow a user to view a real scene through the SLM layer and the backlight layer such that the synthetic image appears to be overlaid on a view of real scene, and wherein each pixel in the SLM layer modulates only a portion of the light emanating from the point light sources and arriving at the viewing location such that the synthetic image appears to be in focus when viewed from the viewing location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A near-eye optical see-through display comprising:
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a display frame for mounting the display near a user'"'"'s eye; a backlight layer mounted to the display frame and including a two-dimensional array of point light sources, wherein the backlight layer comprises a sheet patterned with a sparse array of divots that scatter light through the divots but not between the divots when the sheet is lit from an edge of the sheet to form the point light sources; a spatial light modulator layer mounted to the display frame and for modulating light from the point light sources, the spatial light modulator being located in an optical path between the point light sources and a viewing location at which a user'"'"'s eye is located during use, the spatial light modulator layer being controllable to modulate the light from the point light sources to display a synthetic image overlaid on a view of a real scene at the viewing location; and a modulation and illumination controller for controlling illumination of the backlight layer and modulation performed by the spatial light modulator. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification