A waveguide includes an input area, a multi-layered substrate, and an output area. The multi-layered substrate includes a plurality of layers of at least a substrate and at least one partially reflective layers. The input area in-couples light in a first band into the waveguide. The one or more partially reflective layers are partially reflective to light in the first band. Each of the one or more partially reflective layers are located between respective layers of the plurality of layers of the substrate. The output area out-couples light from the waveguide. The pupil replication density of the out-coupled light is based in part on a number of the one or more partially reflective layers and respective locations of the one or more partially reflective layers in the waveguide.

The disclosed computer-implemented method may include (1) displaying one or more images to a user via a display comprising multiple display regions, (2) switching each of the display regions to a blocking state in which a view of the user's real-world environment in a corresponding region of the user's field of view is blocked from the user, (3) detecting a pass-through triggering event involving one or more objects in the user's real-world environment, (4) identifying one or more display regions corresponding to a region of the user's field of view occupied by the object, and (5) switching each of the one or more display regions to a pass-through state in which the view of the user's real-world environment in the corresponding region of the user's field of view is passed through to the user. Various other methods, systems, and computer-readable media are also disclosed.

Laser radar include two part objective lenses that are used for imaging a target and directing probe beams to the target. Portions of tracer beams that degrade target images are attenuated with dichroic filters that block central portions of tracer beams. Local oscillator beams can be produced with a mixing lens that directs probe beams through a polarizing beam splitter to focus at or on a waveplate so that portions are reflected from the waveplate as local oscillator beams. An imaging system that is confocal with a probe beam is coupled to provide target measurements or to establish a focus of the probe beam.

Disclosed is a thin near-to-eye display device with a large field of view angle. Two or more radial reflection units are adopted to be arranged in front of human eyes, and a large-area image is projected and formed on the retina of the human eyes, so that a near-to-eye display effect of the large field of view angle is achieved in a thin volume.

A waveguide includes an input area, a multi-layered substrate, and an output area. The multi-layered substrate includes a plurality of layers of at least a substrate and at least one partially reflective layers. The input area in-couples light in a first band into the waveguide. The one or more partially reflective layers are partially reflective to light in the first band. Each of the one or more partially reflective layers are located between respective layers of the plurality of layers of the substrate. The output area out-couples light from the waveguide. The pupil replication density of the out-coupled light is based in part on a number of the one or more partially reflective layers and respective locations of the one or more partially reflective layers in the waveguide.

An optical device includes a first polarization selective reflector; a second polarization selective reflector positioned relative to the first polarization selective reflector so that the first polarization selective reflector directs first light having a first nonplanar polarization toward the second polarization selective reflector and the second polarization selective reflector directs at least a portion of the first light toward the first polarization selective reflector as second light. The optical device includes a first reflector positioned relative to the first polarization selective reflector so that the first polarization selective reflector directs at least a portion of the second light having a second nonplanar polarization toward the first reflector as third light.

A display system includes an optical system and a curved display disposed to emit light toward the optical system. The optical system includes at least a first optical lens, a partial reflector and a reflective polarizer. The optical system has an optical axis such that a light ray propagating along the optical axis passes through the first optical lens the partial reflector and the reflective polarizer without being substantially refracted. At least one major surface of the optical system can be rotationally asymmetric about the optical axis. A major surface of the optical system may have a first portion defined by a first equation and a second portion adjacent the first portion defined by a different equation. The first optical lens may have a contoured edge adapted to be placed adjacent an eye of a viewer and substantially conform to the viewer's face.

An optical system includes a partial reflector having an average optical reflectance of at least 30% in a desired plurality of wavelengths, a display panel disposed to emit image light toward the partial reflector, and a multilayer reflective polarizer disposed proximate the partial reflector. The multilayer reflective polarizer is curved about two orthogonal axes and includes at least one layer substantially optically uniaxial at at least one location. The image light is transmitted by the multilayer reflective polarizer after it is first reflected by the multilayer reflective polarizer. A quarter wave retarder may be disposed between the reflective polarizer and the partial reflector.

Methods of making optical films and optical stacks are described. A method of making an optical lens molded to a first curved optical film includes providing a first optical film including alternating first and second polymeric layers; providing a thermoform tool having a curved surface; heating and conforming the first optical film to the curved surface to form a first curved optical film; and molding an optical lens onto the first curved optical film.

Display systems for achieving collimated projection effects. For example, in a theatrical or concert installation, display systems can be used to project images of scenery that appear to be vast and at a great distant behind the viewing window. The system may include a flat panel display, a corrective mirror, and a concave mirror positioned for viewing by an observer. The corrective mirror pre-warps an image generated by the flat panel display and reflects the undistorted image onto the concave mirror such that the observer perceives the image generated by the flat panel display as being at a large distance. The corrective mirror does not distort with changes in viewpoint. In another implementation, the system may include a short throw projector generating an image, a free-form projection screen, and a concave mirror positioned for viewing by many observers through a viewing window.