Provided is a vehicle lamp configured such that light emitted from a light emitting element (30) and incident from an incident portion (22e) formed on a top surface (22c) of a plate-like light guide (22B) is reflected toward a front end surface (22a) of the plate-like light guide (22B) by a first reflecting portion (22f) formed on a bottom surface (22d) of the plate-like light guide (22B). At that time, the incident portion (22e) is positioned on a step-up surface (22c1) formed to protrude from a general portion (22c0) of the top surface (22c). Further, the first reflecting portion (22f) is formed such that its upper end edge (22f1) is located closer to the step-up surface (22c1) than the general portion (22c0) of the top surface (22c). In this way, a wide reflecting area of the first reflecting portion (22f) can be secured.

A light guide plate includes a through hole; at least one light transmitting component disposed within the light guide plate; at least one light incident surface; at least one light source; and at least one lens structure located between the light source and the incident surface. The light transmitting component is configured to transmit a portion of light that enters the light incident surface to a first region of the light guide plate that would otherwise be masked by the through hole. The light guide plate might backlight a display panel. A method for manufacturing the light guide plate is also provided.

An augmented reality system includes a light source configured to generate a virtual light beam. The system also includes a light guiding optical element, the light guiding optical element is transparent to a first real-world light beam, wherein the virtual light beam enters the light guiding optical element, propagates through the light guiding optical element by total internal reflection (TIR) and exits the light guiding optical elements. The system also includes a lens disposed adjacent and exterior to the surface of the light guiding optical element. The lens is configured with a gradient tint that transmits less real-world light at a world side top portion of the lens and transmits more real-world light at a world side bottom portion of the lens, wherein rainbow artifacts, generated from inadvertent diffraction of the overhead real-world light by the light guiding optical element, is minimized.

A lighting fixture defines a lateral direction, a transverse direction, and a vertical direction. The light fixture includes a frame and a first panel supported by the frame. The first panel includes a first edge extending between a front surface of the first panel and a rear surface of the first panel. The lighting fixture includes a second panel supported by the frame. The second panel includes a second edge extending between a front surface of the second panel and a rear surface of the second panel. The lighting fixture includes at least one light source configured to illuminate the first panel and the second panel. The lighting fixture includes a light reflector extending adjacent to the rear surface of the first panel and the rear surface of the second panel. The light reflector reflects light emitted from at least one of the first panel and the second panel.

A semiconductor device is provided. The semiconductor device includes a silicon nitride waveguide in a first dielectric layer over a substrate. The semiconductor device includes a semiconductor waveguide in a second dielectric layer over the first dielectric layer. The first dielectric layer including the silicon nitride waveguide is between the second dielectric layer including the semiconductor waveguide and the substrate.

A backlight module includes a light guide panel and a backlight source, which emits light entering the light guide panel via a light receiving surface on a side of the light guide panel. The backlight source includes a base plate and a plurality of light source holders disposed on the base plate. The light source holder includes a circuit substrate having an opening and a base surface. The base surface and the opening are transitionally connected by a curved surface.

One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lamina configured to extract light from the second substrate along the second direction; wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.

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 hoard 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 head-mounted display to be mounted on a head of the user includes a display panel to display an image, a lighting device to supply light to the display device, the lighting device including at least one light source including a blue light emitting element emitting blue light, and a red phosphor to emit red light when excited by the blue light from the blue light emitting element, the red phosphor including a complex fluoride red phosphor and a nitride red phosphor having a content ratio smaller than that of the complex fluoride red phosphor, a lighting controller to control driving of the light source in synchronization with the image display by the display device so that a one-frame display period in the display device includes a turn-on period and a turn-off period, and a lens.

A grating collimator and backlight system provide collimated light to illuminate a backlight. The grating collimator includes a light guide configured to guide light as guided light and a light-recycling light source configured to provide light to the light guide and to recycle light received from the light guide. The grating collimator further includes a diffraction grating coupler configured to diffractively redirect the provided light into the light guide as the guided light. The backlight system includes the grating collimator configured to provide collimated output light and the backlight configured to receive the collimated output light. The backlight may be multiview backlight.