A virtual image generation system for use by an end user comprises a projection subsystem configured for generating a collimated light beam, and a display configured emitting light rays in response to the collimated light beam to display a pixel of an image frame to the end user. The pixel has a location encoded with angles of the emitted light rays. The virtual image generation system further comprises a sensing assembly configured for sensing at least one parameter indicative of at least one of the emitted light ray angles, and a control subsystem configured for generating image data defining a location of the pixel, and controlling an angle of the light beam relative to the display based on the defined location of the pixel and the sensed parameter(s).

A light guide plate includes a light guide plate body and at least one light transmitting component disposed in the light guide plate body. The light guide plate body has at least one light incident surface. A light transmitting component of the at least one light transmitting component is configured to transmit a portion of light that enters the light guide plate body from a light incident surface of the light guide plate body to a first region of the light guide plate body.

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 system such as a vehicle may have windows. A window may have a structural window layer such as a structural window layer formed from laminated glass layers. A thin chemically strengthened glass layer may be coupled to an inwardly facing surface of the structural window layer. A guest-host liquid crystal light modulator layer or other electrically adjustable optical component layer may be interposed between the chemically strengthened glass layer and the structural window layer. An infrared light-blocking coating may be formed on an inwardly facing surface of one of the pair of laminated glass layers. The inwardly facing surface of the thin chemically strengthened glass layer may be provided with a coating that includes a low emissivity layer to block heat and that serves as an antireflection coating.

A virtual image generation system for use by an end user comprises a projection subsystem configured for generating a collimated light beam, and a display configured emitting light rays in response to the collimated light beam to display a pixel of an image frame to the end user. The pixel has a location encoded with angles of the emitted light rays. The virtual image generation system further comprises a sensing assembly configured for sensing at least one parameter indicative of at least one of the emitted light ray angles, and a control subsystem configured for generating image data defining a location of the pixel, and controlling an angle of the light beam relative to the display based on the defined location of the pixel and the sensed parameter(s).

A backlight unit includes a light source having an emission region, a wiring board having the light source mounted thereon, a light guide plate having a side surface into which light from the light source enters, and a front surface from which the light exits, a light shielding adhesive tape adhering to the wiring board, and an optical sheet which overlaps with the front surface of the light guide plate. The front surface of the light guide plate includes an effective region serving as a planar light source and a light entering region ranging from the side surface to the effective region. The wiring board and the light-shielding adhesive tape each have a part positioned in the light entering region, and the optical sheet is arranged from the effective region to the light entering region. An end portion of the optical sheet overlaps with the light-shielding tape.

A near-eye display device including a light engine, a first light waveguide, and a second light waveguide is provided. The light engine provides an image. The first light waveguide reproduces the image of a view angle region in a first direction. The first light waveguide includes a plurality of first beam splitters arranged along the first direction. The second light waveguide reproduces the image of a view angle region in a second direction. The second light waveguide includes a plurality of second beam splitters arranged along the second direction. The second light waveguide has a first surface and a second surface opposite to the first surface. The first surface faces the first light waveguide. An included angle is present between each of the second beam splitters and the second surface. The included angle is between 0 and 90 degrees and is not equal to 45 degrees.

A display device includes a display panel, a lighting device, at least one light source, a lighting controller, a complex fluoride red phosphor, and a nitride red phosphor. The one light source includes a blue light emitting element and a red phosphor configured to emit red light when excited by the blue light from the blue light emitting element. The lighting controller is configured to control driving of the light source in synchronization with the image display by the display panel so that a one-frame display period in the display panel includes a turn-on period and a turn-off period. The complex fluoride red phosphor constitutes the red phosphor and has a content ratio in a range from 50% to 85% inclusive. The nitride red phosphor constitutes the red phosphor and has a content ratio in a range from 15% to 50% inclusive.

The present invention teaches a backlight module and the LCD device. The backlight module includes a light guide plate and a light source located at a distance to a side of the light guide plate. The light source includes a substrate, multiple LED chips disposed on the substrate, multiple primary lenses disposed on the substrate corresponding to the LED chips, and multiple condenser lenses disposed on the substrate corresponding to the primary lenses. Each primary lens is disposed correspondingly to a LED chip, focuses light from the LED chip, and prevents the light emission face of the LED chip from being higher above the light guide plate, thereby enhancing the light coupling efficiency and reducing leakage of the backlight module. Each condenser lens is disposed correspondingly to a primary lens to further narrow light emission angle of the LED chip, enhancing light utilization efficiency.

Disclosed herein is an apparatus, which comprises an optical waveguide, a first and second waveguide couplers. The optical waveguide may be configured to receive light from an end surface of the optical waveguide. The first waveguide coupler may be coupled, at a first coupling strength, to a first portion of the optical waveguide. The second waveguide coupler may be coupled, at a second coupling strength, to a second portion of the optical waveguide. Attenuation of the light at the first portion is smaller than attenuation of the light at the second portion. The first coupling strength is smaller than the second coupling strength. The first waveguide coupler and the second waveguide coupler each comprises a surface comprising sites configured to attach a probe.