Eye mounted displays and systems, with variable resolution
A display device is mounted on and/or inside the eye. The eye mounted display contains multiple sub-displays, each of which projects light to different retinal positions within a portion of the retina corresponding to the sub-display. The projected light propagates through the pupil but does not fill the entire pupil. In this way, multiple sub-displays can project their light onto the relevant portion of the retina. Moving from the pupil to the cornea, the projection of the pupil onto the cornea will be referred to as the corneal aperture. The projected light propagates through less than the full corneal aperture. The sub-displays use spatial multiplexing at the corneal surface. Various electronic devices interface to the eye mounted display.
1. An eye mounted display comprising:
a contact lens; and
two or more femto projectors located inside the contact lens, the eye mounted display moving with the user's eye as the user's eye rotates in its socket, the two or more femto projectors projecting a plurality of pixels onto a retina of an eye of a human user when the contact lens is mounted on the eye, thereby forming a visual sensation of an image that spans a field of view of the user's eye, the projected pixels having different sizes at the retina, each of the femto projectors comprising:
a plurality of display pixels displaying a different portion of the image for each femto projector, and
display optics projecting light from the display pixels to a portion of the retina corresponding to the portion of the image displayed by that femto projector, wherein the portion of the retina is fixed as the user's eye rotates in its socket and thereby forming a visual sensation of the portion of the image displayed by that femto projector, each such projection of light propagating through a partial corneal aperture for that femto projector, different femto projectors projecting light to different portions of the retina, and the femto projectors in aggregate projecting light to portions of the retina that in aggregate span the field of view.
2. The eye mounted display of claim 1 wherein the sizes of the projected pixels at the retina match a native resolution of the eye.
3. The eye mounted display of claim 1 wherein the visual sensation of the image is produced with a resolution matching a native resolution of the eye.
4. The eye mounted display of claim 1 wherein the sizes of the projected pixels at the retina vary in part as a function of a size of cone cells.
5. The eye mounted display of claim 1 wherein the sizes of the projected pixels at the retina vary in part as a function of an area between cone cells.
6. The eye mounted display of claim 1 wherein the sizes of the projected pixels at the retina vary in part as a function of a density of cone cells.
7. The eye mounted display of claim 1 wherein the sizes of the projected pixels at the retina vary in part as a function of the number of cone cells that form a retinal receptive field.
8. The eye mounted display of claim 1 wherein the sizes of the projected pixels at the retina vary in part as a function of a size of retinal receptive fields.
9. The eye mounted display of claim 8 wherein the sizes of the projected pixels at the retina vary in part as a function of a size of cone retinal receptive fields.
10. The eye mounted display of claim 8 wherein the sizes of the projected pixels at the retina vary in part as a function of a size of rod retinal receptive fields.
11. The eye mounted display of claim 1 wherein the sizes of the projected pixels at the retina are smallest within a fovea of the eye.
12. The eye mounted display of claim 1 wherein the sizes of the projected pixels at the retina increases with increasing eccentricity.
13. The eye mounted display of claim 1 wherein the pixels are pseudo-cone pixels.
14. The eye mounted display of claim 13 wherein the pseudo-cone pixels projected to a fovea of the retina are somewhat larger than cone cells in the fovea.
15. The eye mounted display of claim 13 wherein the pseudo-cone pixels are hexagonal in shape.
16. The eye mounted display of claim 13 wherein the projected pseudo-cone pixels at the retina are elongated at increasing eccentricities.
17. The eye mounted display of claim 1 wherein the pixels are projected onto a lattice at the retina.
18. The eye mounted display of claim 17 wherein the pixels are projected onto an irregular hexagonal lattice at the retina.
19. The eye mounted display of claim 1 wherein the image occupies substantially a full field of view of the eye, and the visual sensation of the image is produced by not more than approximately 400,000 pixels.
20. The eye mounted display of claim 1 wherein the one or more femto projectors produce wavefronts of variable radius.