Lens Assembly with Multiple Lenses for Relaying Images
A display device includes a two-dimensional array of pixels configured for outputting a respective pattern of light. The display device also includes a lens assembly configured for relaying the respective pattern of light from the two-dimensional array of pixels to a pupil of an eye of a user. The lens assembly includes two or more lenses. The two or more lenses are configured in such a way that a ray of light from a respective pixel of the two-dimensional array of pixels passes through the two or more lenses of the lens assembly.
1 . A display device, comprising:
a two-dimensional array of pixels configured for outputting a respective pattern of light;
a lens assembly configured for relaying the respective pattern of light from the two-dimensional array of pixels to a pupil of an eye of a user, wherein the lens assembly includes two or more lenses and the two or more lenses are configured in such a way that a ray of light from a respective pixel of the two-dimensional array of pixels passes through the two or more lenses of the lens assembly.
2 . The display device of claim 1 , wherein the display device is a head-mounted display device.
3 . The display device of claim 1 , wherein a distance from the two-dimensional array of pixels to the lens assembly is greater than a distance from the lens assembly to the pupil of the eye of the user.
4 . The display device of claim 1 , wherein the distance from the two-dimensional array of pixels to the pupil of the eye of the user is less than 100 mm.
5 . The display device of claim 1 , wherein the two-dimensional array of pixels has a height of at least 50 mm.
6 . The display device of claim 1 , wherein the lens assembly is configured to project a demagnified image, of an image formed on the two-dimensional array of pixels, on a retina of the eye of the user.
7 . The display device of claim 1 , wherein the lens assembly includes a first converging lens and a second converging lens.
8 . The display device of claim 7 , wherein the first converging lens and the second converging lens are meniscus lenses.
9 . The display device of claim 8 , wherein:
the first converging lens is a convex-concave lens;
the second converging lens is a convex-concave lens; and
a convex surface of the first converging lens faces a convex surface of the second converging lens.
10 . The display device of claim 7 , wherein the lens assembly is configured so that the second converging lens is positioned adjacent to the two-dimensional array of pixels.
11 . The display device of claim 10 , wherein a diameter of the second converging lens is at least 50 mm.
12 . The display device of claim 10 , wherein a diameter of the first converging lens is at least 30 mm.
13 . The display device of claim 10 , wherein a center thickness of the first converging lens is at most 10 mm.
14 . The display device of claim 10 , wherein a center thickness of the second converging lens is at most 14 mm.
15 . The display device of claim 1 , wherein an effective focal length of the lens assembly is less than 70 mm.
16 . The display device of claim 1 , wherein an eye relief of the lens assembly is about 10 mm.
17 . The display device of claim 1 , wherein a viewing angle of the display device is about 100 degrees.
18 . The display device of claim 1 , wherein the two or more lenses are positioned on a same optical axis.
19 . A lens assembly, comprising:
two or more lenses for relaying a respective pattern of light from a two-dimensional array of pixels to a pupil of an eye of a user, wherein the two or more lenses are configured in such a way that a ray of light from a respective pixel of the two-dimensional array of pixels passes through the two or more lenses of the lens assembly.
20 . A method, comprising:
at a display device, comprising a two-dimensional array of pixels and a lens assembly:
outputting a respective pattern of light from the two-dimensional array of pixels; and
relaying, using the lens assembly, the respective pattern of light from the two-dimensional array of pixels to a pupil of an eye of a user, wherein the lens assembly includes two or more lenses and the two or more lenses are configured in such a way that a ray of light from a respective pixel of the two-dimensional array of pixels passes through the two or more lenses of the lens assembly.