An optical element, comprising a light guide body. The light guide body comprises a plurality of light-incident parts arranged along a length extension direction of the light guide body, a light guide part and a light-emitting part; each light-incident part is provided with at least one light-incident unit; the light guide part is configured to guide light received by each light-incident unit to be emitted toward the light-emitting part; the shape of a forward projection plane of the light-emitting part is of a strip shape. The optical element can reduce the occupied space and improve the space utilization rate, facilitates reducing positioning mounting errors, has an appearance with a narrow and elongated shape, and can be applied in vehicle lamp modules, vehicle lamps and vehicles.

An input apparatus includes a reflection layer, a light guide plate, a first light source, a second light source and a light absorption member. The light guide plate is disposed on the reflection layer and includes a first light guide region and a second light guide region connected with each other by a junction, a first area of the first light guide region is different from a second area of the second light guide region. The first light source corresponds to the first light guide region. The second light source corresponds to the second light guide region, the light guide plate has a first opening structure disposed between the first light source and the second light source. The light absorption member is disposed at a position corresponding to the first opening structure.

Waveguide combiners having a pass-through in-coupler grating are described herein. The waveguide combiners include at least one microdisplay and a stack of at least two waveguide layers. In one configuration of a waveguide combiner described herein, the green FOV and the blue FOV only propagate in a first waveguide and the red FOV only propagates in a second waveguide. In another configuration of a waveguide combiner described herein, the blue FOV, the red FOV, and the green FOV only propagate in the first waveguide, the second waveguide, and a third waveguide respectively. The waveguide combiners including the stack of waveguide layers reduces luminance non-uniformity, color non-uniformity, double-images, and other non-uniformities of the overlayed images from a first microdisplay and, in some embodiments, a second microdisplay.

A microfluidic apparatus is provided. The microfluidic apparatus includes a base substrate; a microfluidic device on the base substrate and including a plurality of micro fluidic channels; a plurality of light sources of different colors respectively emitting light of different wavelength ranges; a light extraction apparatus for extracting light respectively from the plurality of light sources of different colors and a plurality of photosensors. The light extraction apparatus includes a light guide plate having a plurality of light incident portions for respectively receiving light respectively incident from the plurality of light sources of different colors, the plurality of light incident portions being on a side of the light guide plate away from the microfluidic device; and a plurality of light extractors on the light guide plate.

Provided is a fixture including a base; and a light guide, which is positioned on the base and is configured to receive light emitted from a light source in a first direction and guide the received light to be emitted in a second direction crossing the first direction.

A light source or projector for a near-eye display includes a light source subassembly optically coupled to a waveguide concentrator. The light source subassembly may include several semiconductor chips each hosting an array of emitters such s superluminescent light-emitting diodes. The semiconductor chips may be disposed side-by-side, with their emitting sides or facets coupled to the waveguide concentrator, which provides a tight array of output light ports on a common output plane of the concentrator. The output diverging beams at the array of output light ports are coupled to a collimator, which collimates the beams and couples them to an angular scanner for scanning the collimated light beams together across the field of view of the display.

A display comprises a film-based lightguide, a light source positioned to emit light into the lightguide, and a light turning film with light turning features comprising a first surface with a first coating of a first material with a first refractive index that redirects light extracted from lightguide toward a reflective spatial light modulator wherein the light turning features also comprise a second surface that does not comprises a coating of the first material or comprises a coating of a thickness of the first material less than 500 nanometers. The light turning film may comprises a base layer of a second material with a second refractive index, and the first refractive index is less than the second refractive index. The first surface may be an angled planar surface oriented at an angle the surface of the light turning film or comprise a curved surface.

An intelligent furnishing system. The furnishing system includes an electronic device, a server, and a workstation. The workstation includes a short-range communication circuit, a user interface including a light source, and an electronic processor. The electronic processor is configured to receive a reservation including a reservation start time, increase a communication range of the short-range communication circuit when the reservation start time is a predetermined period of time from a current time, and receive a proximity signal from the electronic device. The electronic processor is also configured to illuminate the light source in a first color, receive a check-in signal when the proximity signal is received, change the light source from the first color to a second color, receive a check-out signal when the check-in signal is received, and change the light source from the second color to a third color when the check-out signal is received.

A display apparatus comprises at least one spatial light modulator and at least one curved view angle control element that comprises plural retarders arranged between the display polariser of each spatial light modulator, and an additional polariser. The curvature of the view angle control element provides increased luminance uniformity for a head-on user and increased visual security to an off-axis snooper.

A display device includes a display panel , a plurality of light sources arranged in a first direction orthogonal to a normal direction of the display panel, a light guide panel on which light from a plurality of light sources is incident and including an emission surface that emits light toward the display panel, and a first optical member disposed between the display panel and the light guide panel and including a first surface opposing the emission surface of the light guide panel, a second surface provided opposite to the first surface to oppose the display panel, a Fresnel lens provided on the first surface, and an optical array provided on the second surface. As viewed in at least one of the first direction and a second direction orthogonal to both the normal direction and the first direction, the Fresnel lens emits light passing through a center of the display panel .