A multipass scanner usable e.g. in a near-eye display is disclosed. The multipass scanner scans a light beam angularly, forming an image in angular domain. The multipass scanner includes a light source, a tiltable reflector, and a multipass coupler that couples light emitted by the light source to the tiltable reflector, receives the reflected light and couples it back to the tiltable reflector to double the scanning angle. Then, the multipass coupler couples the light reflected at least twice from the tiltable reflector to an exit pupil of the scanner. A pupil-replicating waveguide disposed at the exit pupil of the scanner extends the image in angular domain. Multiple reflections of the light beam from the tiltable reflector enable one to increase the angular scanning range and associated field of view of the display without having to increase the angular scanning range of the tiltable reflector.

A multipass scanner usable e.g. in a near-eye display is disclosed. The multipass scanner scans a light beam angularly, forming an image in angular domain. The multipass scanner includes a light source, a tiltable reflector, and a multipass coupler that couples light emitted by the light source to the tiltable reflector, receives the reflected light and couples it back to the tiltable reflector to double the scanning angle. Then, the multipass coupler couples the light reflected at least twice from the tiltable reflector to an exit pupil of the scanner. A pupil-replicating waveguide disposed at the exit pupil of the scanner extends the image in angular domain. Multiple reflections of the light beam from the tiltable reflector enable one to increase the angular scanning range and associated field of view of the display without having to increase the angular scanning range of the tiltable reflector.

The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens group having a positive refractive power and including a first lens; and a second lens group having a positive refractive power and sequentially including from the first lens to the image side along the optical axis: a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein the second lens has a positive refractive power; an object-side surface of the sixth lens is a convex surface, and an image-side surface of the sixth lens is a concave surface; the seventh lens has a positive refractive power; the eighth lens has a negative refractive power.

The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens group having a positive refractive power and including a first lens; and a second lens group having a positive refractive power and sequentially including from the first lens to the image side along the optical axis: a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein the second lens has a positive refractive power; an object-side surface of the sixth lens is a convex surface, and an image-side surface of the sixth lens is a concave surface; the seventh lens has a positive refractive power; the eighth lens has a negative refractive power.

Disclosed is an image stitching-based aerial image formation apparatus, including sequentially along an optical path direction: an image source comprising a plurality of display units arranged in an array; a rear lens group comprising a plurality of optical lens units arranged in an array; and a front lens group, wherein light rays passing through the rear lens group are converged via the front lens group to render a real image in midair. The disclosure offers the following benefits: by splitting the image source into a plurality of display units arranged in an array and constituting the rear lens group by a plurality of optical lens units arranged in an array, the image is split into smaller patches, such that the longitudinal distance needed for chromatic aberration adjustment also decreases, which shrinks the longitudinal dimension of the whole apparatus so as to be better adapted for installation in a narrow space.

Disclosed is an image stitching-based aerial image formation apparatus, including sequentially along an optical path direction: an image source comprising a plurality of display units arranged in an array; a rear lens group comprising a plurality of optical lens units arranged in an array; and a front lens group, wherein light rays passing through the rear lens group are converged via the front lens group to render a real image in midair. The disclosure offers the following benefits: by splitting the image source into a plurality of display units arranged in an array and constituting the rear lens group by a plurality of optical lens units arranged in an array, the image is split into smaller patches, such that the longitudinal distance needed for chromatic aberration adjustment also decreases, which shrinks the longitudinal dimension of the whole apparatus so as to be better adapted for installation in a narrow space.

An optical lens system includes two lens elements which are, in order from an object side to an image side along an optical path: a first lens element and a second lens element. Each of the two lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of the object-side surface and the image-side surface of at least one lens element of the optical lens system is aspheric. A total number of the lens elements in the optical lens system is two.

An optical lens system includes two lens elements which are, in order from an object side to an image side along an optical path: a first lens element and a second lens element. Each of the two lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of the object-side surface and the image-side surface of at least one lens element of the optical lens system is aspheric. A total number of the lens elements in the optical lens system is two.

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.

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.