An angular filter for an image sensor includes opaque resin patterns at least partially covered with a first humidity-tight layer.

Transparent organic light-emitting diodes (OLEDs) can be used as light-emitting pixels in a near-eye display for augmented reality applications. The light from these pixels can be switchably tuned and/or steered with tunable beam-steering and focusing elements, also called tunable micro-lenses. These tunable micro-lenses are arranged in an array and mated to the array of pixels, for example, by embedding in a spectacle lens. The tunable micro-lenses use fast-switching half-wave plates to selectively focus and/or tilt light from the pixels. By switching the light from the pixels between resolvable positions/angles at a rate faster than the flicker fusion threshold (e.g., 60 Hz), the tunable micro-lenses can effectively double the apparent resolution of the near-eye display. And by switching between focusing and non-focusing states at the same rate, the tunable micro-lenses can effectively superimpose the virtual images from the pixels on the real-world image visible through the pixels.

A display device includes: an image projector including an image forming device and a meta-lens module and configured to output image light formed by the image forming device; and a meta-waveguide configured to transfer the image light output from the image projector, to an observer's field of view, the meta-waveguide including waveguide element configured to totally reflect light inside, an input coupler including a plurality of first nanostructures forming a first phase gradient in a first direction and configured to couple the image light from the image projector to an inside of the waveguide element, and an output coupler including a plurality of second nanostructures forming a second phase gradient in a second direction different from the first direction and configured to output the light coupled to the inside of the waveguide element by the input coupler, to an outside of the waveguide element.

A system includes a first light source that emits a beam of light; an electrical modulator that imparts a time-varying modulation on the beam of light; a beam- shaping system that shapes the beam of light and projects the shaped beam of light onto an object; an image sensor that captures the beam of light reflected from the object; and processors that determine three-dimensional (3D) coordinates of points on the object.

The invention relates to an optical device for a vehicle with at least one lens comprising an optical axis, an output diopter, and an input diopter. The device including a light source arranged to emit light towards the input diopter of the at least one lens, with the at least one lens having an object focus located substantially on the input diopter of the lens. A section of the output diopter in a vertical plane parallel to the optical axis of the at least one lens includes one or more elliptical or substantially elliptical arcs which are modified relative to a reference elliptical shape, in which all the rays coming from the light source would be emitted parallel to the optical axis of the at least one lens at the output of a reference output diopter.

The optical module disclosed herein has a first lens, a second lens and an array lens arranged sequentially along the main optical axis. The first lens shapes a beam along the first direction of the main optical axis. The second lens shapes the beam along the second direction of the main optical axis. The array of array lenses is arranged along the second direction. A laser beam enters the second lens after passing through the first lens. The second lens diffuses the laser beam along the second direction. After the laser beam is converted from a Gaussian distribution to a flat-top distribution in the second direction, the laser beam is emitted through the array lens. The first direction and the second direction are perpendicular to each other.

Discrete light fiber inputs for high powered image projector display systems are disclosed herein. Various embodiments disclosed herein may employ a bundle of light fiber inputs, a diffuser and reducing relay optic to convert the fiber input array into a smaller pattern of spots that may be interfaced to a projector display system that may perform light recycling. Many embodiments herein may facilitate higher power laser light for illumination and, possibly, recycling. In these embodiments, laser fibers may be individually collimated and illuminate a diffuser. The diffuser spots may be then imaged through a common path relay that can be resized to allow room for the individual lasers and collimation lenses. The diffuser spots may be imaged through holes in a mirror that is on the input side of an integration rod which recycles the light.

An illumination device includes a diffusion member having an anisotropic diffusion surface, a rotary shaft member configured to rotate the anisotropic diffusion surface while a coherent light beam from a light source is illuminated on the anisotropic diffusion surface, and an optical device that further diffuses a coherent light beam diffused on the anisotropic diffusion surface, wherein the coherent light beam diffused on the anisotropic diffusion surface is diffused in a form of line and the diffused coherent light beam in the form of line is configured to move to draw a locus of rotation in one direction in accordance with the rotation of the anisotropic diffusion surface.

Apparatus for generating a line-beam includes a diode-laser bar, a linear micro-lens array, and a plurality of lenses spaced apart and arranged along an optical axis. The linear micro-lens array and the lenses shape laser-radiation emitted by the diode-laser bar to form a uniform line-beam in an illumination plane. The lenses project a far-field image of the diode-laser bar onto an image plane proximate to the illumination plane. The diode-laser bar is rotated from parallel alignment with the linear micro-lens array for providing uniform line-beam illumination over a range of locations along the optical axis.

An illuminator for a display panel includes a slab of transparent material for propagating illuminating light between outer surfaces of the slab, an out-coupling grating supported by the slab for out-coupling portions of the illuminating light along one of the outer surfaces of the slab, and an amplitude and/or phase mask for forming an array of light spots from the out-coupled illuminating light portions downstream of the focusing element for illuminating pixels of the display panel. The array of light spots may be repeated at a distance from the mask due to Talbot effect. A beam redirecting element such as a tiltable reflector and/or a steering surface may be provided to shift the lateral location of the illuminating light spots.