Compact near eye display with scanned image generation
First Claim
1. A compact near eye display for generating a virtual image comprising:
- a modulatable light source that generates one or more pixels of an intended image,the modulatable light participating in the formation of a first dimension of the intended image as a linear arrangement of pixels,a focusing optic that angularly transforms the first dimension of the intended image from the linear arrangement of the pixels to an angular arrangement of pixel beams converging through a first dimension pupil within an eyebox,a scanning optic that directs the angularly transformed first dimension of the intended image from the focusing optic into a waveguide for conveying the angular arrangement of pixel beams to the first dimension pupil,the scanning optic being adjustable in synchronism with the modulatable light source for angularly forming a second dimension of the intended image as an overlapping angular arrangement of the pixel beams within a second dimension pupil in advance of the eyebox, andthe waveguide being arranged to at least partially preserve the second dimension pupil so that the second dimension pupil as preserved sufficiently overlaps with the first dimension pupil within the eyebox so that the virtual image is viewable within the eyebox.
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Accused Products
Abstract
A compact near eye display generates image segments for a first dimension of an intended image. Each of the image segments is transformed into angularly distinguished beamlets that converge through a first dimension pupil within an eyebox. A scanning optic angularly separates the angularly distinguished beamlets of different image segments for creating a second dimension pupil. The angularly distinguished and separated beamlets propagate along a waveguide in a form that minimizes the thickness of the display in front of a viewer'"'"'s eye and limits the overall size of the optics required to support the projection of virtual images into the viewer'"'"'s eye.
73 Citations
20 Claims
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1. A compact near eye display for generating a virtual image comprising:
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a modulatable light source that generates one or more pixels of an intended image, the modulatable light participating in the formation of a first dimension of the intended image as a linear arrangement of pixels, a focusing optic that angularly transforms the first dimension of the intended image from the linear arrangement of the pixels to an angular arrangement of pixel beams converging through a first dimension pupil within an eyebox, a scanning optic that directs the angularly transformed first dimension of the intended image from the focusing optic into a waveguide for conveying the angular arrangement of pixel beams to the first dimension pupil, the scanning optic being adjustable in synchronism with the modulatable light source for angularly forming a second dimension of the intended image as an overlapping angular arrangement of the pixel beams within a second dimension pupil in advance of the eyebox, and the waveguide being arranged to at least partially preserve the second dimension pupil so that the second dimension pupil as preserved sufficiently overlaps with the first dimension pupil within the eyebox so that the virtual image is viewable within the eyebox. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A compact near eye display for generating a virtual image comprising:
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a linear image generator responsive to a control signal for generating successive lines along a first dimension of an intended image, a focusing optic that transforms points along each of the successive lines into angularly distinguishable beamlets that converge through a first dimension pupil within an eyebox, a scanning optic that is adjustable in synchronism with the linear image generator for angularly sweeping the angularly distinguishable beamlets from the focusing optic in a second dimension of the intended image for overlapping the angularly swept beamlets within a second dimension pupil in advance of the eyebox, a waveguide that conveys the angularly distinguishable beamlets on converging paths toward the first dimension pupil and at least partially preserves the overlap of the angularly swept beamlets within the second dimension pupil so that the first and second dimension pupils effectively overlap within the eyebox so that the virtual image is viewable within the eyebox. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of forming a virtual image with a near-eye display comprising steps of:
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generating spatially distinguished image segments for a first dimension of an intended image, transforming each of the spatially distinguished image segments into angularly distinguished beamlets that converge through a first dimension pupil within an eyebox, angularly separating the angularly distinguished beamlets of different image segments for creating a second dimension pupil; propagating the angularly distinguished and separated beamlets along a waveguide having a vertical dimension sufficient for propagating the angularly distinguished and separated beamlets on converging paths toward the first dimension pupil and having a limited thickness for preserving the second dimension pupil along the converging paths of propagation, and further propagating the angularly distinguished and separated beamlets beyond the waveguide in a form at which the first and second dimension pupils overlap within the eyebox. - View Dependent Claims (20)
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Specification