The present application discloses a dual-color laser light projection device, wherein the dual-color laser light projection device includes a first blue laser transmitter, a second blue laser transmitter, a red laser transmitter, a light combining component, a fluorescent wheel, a light-pipe; wherein the fluorescent wheel comprises a green fluorescent region provided with a green fluorescent powder and a transmission region, and wherein the green fluorescent region is excited by a first blue laser emitted from the first blue laser transmitter to generates green fluorescence. The light path system of the present application is simple and has a small volume.

In one embodiment, a display comprises a light source positioned to emit light into a 0.5 millimeter thick lightguide with light extraction features, a cladding layer optically coupled to a core layer of the lightguide on a first side, a light turning film optically coupled to the cladding layer on an opposite side, the light turning film comprising a light turning features that redirect frustrated totally internally reflected light from the core layer into a first portion of light with a first peak luminous intensity at a first angle and a second portion of light with a second peak luminous intensity at a second angle different from the first angle and on an opposite side of the thickness direction, and the light diffusely reflecting from a reflective spatial light modulator has a peak luminous intensity within degrees from a direction normal to a surface of the display.

Embodiments provide systems, methods and apparatus for illuminating a portion of the face of a display lens proximate to and along one or more edges of the display lens. The display lens includes a transparent lens having four edges and a face surface. At least one edge includes an angle relative to the face surface configured to reflect light in the lens out of the face surface. Numerous other aspects are provided.

A waveguide display disposed in glasses includes a first pupil expander assembly operable to project a first image defined by a first field of view and a second pupil expander assembly disposed adjacent the first pupil expander assembly and operable to project a second image defined by a second field of view different from the first field of view.

A lighting and/or signalling device, in particular for the automotive sector, comprising: at least two LED light sources, powered and activated separately, each facing a respective light input wall of a corresponding light guide, wherein the light guides emit the light of the LED light sources through at least two separate lighting portions at a front wall. The light guides are equipped with diffuser elements arranged on a rear wall opposite to the front wall. At least one reflector element is associated with each light guide directly facing the respective diffuser elements so as to reflect the light towards the front wall. The light guides are juxtaposed and adjacent to each other at at least one respective inner wall. The light guides are mechanically and optically separated by barrier elements which prevent the passage of light between the light guides at the at least one inner wall.

A backlight module and a display device are provided. The backlight module includes a light guide plate and a light collection component. The light collection component includes a light capturing device, the light capturing device has a connection opening, and the connection opening of the light capturing device is configured to introduce the captured light into the light guide plate.

A liquid crystal display includes a liquid crystal display panel, a backlight and a cover. The backlight includes optical sheets that are configured to be mounted to the cover using a plurality of holes provided on the optical sheet that material to corresponding protrusions provided on the cover. The holes and protrusions are configured to reduce damage or misalignment to the optical sheet that may be caused by heat generated inside the liquid crystal display.

The present application discloses a dual-color laser light projection device, wherein the dual-color laser light projection device includes a first blue laser transmitter, a second blue laser transmitter, a red laser transmitter, a light combining component, a fluorescent wheel, a light-pipe; wherein the fluorescent wheel comprises a green fluorescent region provided with a green fluorescent powder and a transmission region, and wherein the green fluorescent region is excited by a first blue laser emitted from the first blue laser transmitter to generates green fluorescence. The light path system of the present application is simple and has a small volume.

Disclosed herein are systems and methods for displays, such as for a head wearable device. An example display can include an infrared illumination layer, the infrared illumination layer including a waveguide having a first face and a second face, the first face disposed opposite the second face. The illumination layer may also include an in-coupling grating disposed on the first face, the in-coupling grating configured to couple light into the waveguide to generate internally reflected light propagating in a first direction. The illumination layer may also include a plurality of out-coupling gratings disposed on at least one of the first face and the second face, the plurality of out-coupling gratings configured to receive the internally reflected light and couple the internally reflected light out of the waveguide.

According to an aspect, a display device includes: a first substrate; a display functional layer; a plurality of first electrodes; a light guide plate; a plurality of second electrodes; and a controller configured to control the first electrodes and the second electrodes. The first substrate, the display functional layer, the first electrodes, the light guide plate, and the second electrodes are stacked in this order. The controller performs operations during a plurality of display periods to display an image, during a first sensing period, and during a second sensing period in a time-division manner. The first electrodes are supplied with a first drive signal and an electromotive force caused by electromagnetic induction is generated in the second electrodes during the first sensing period. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between the first electrodes and the second electrodes during the second sensing period.