A optically transmissive component is configured within a light fixture to provide benefits in brightness uniformity and visual appearance with the use of a light scattering extension portion that provides light scattering of light emitted from near an input edge of a light guide or other edgelit optical element. The sequential propagation of light through both the extension portion and main portion of the optically transmissive component significantly reduces the higher brightness and uneven “hotspotting” type visual defects typically produced near the input edge of an edgelit optical system. With appearance constraints removed or reduced, edgelit light fixtures with higher output, higher efficacy, and/or simplified edgelit optical components are enabled. Embodiments include the use of the extension portion of the optically transmissive component extension to mechanically position and retain an edgelit optical element within a light fixture.

A circuit structure includes a light-transmissive insulation layer, a patterned conductive layer and an electronic component. The patterned conductive layer is disposed on the light-transmissive insulation layer. The electronic component is disposed on the patterned conductive layer and electrically connected to the patterned conductive layer.

A backlight module and a liquid crystal display device are disclosed. The backlight module includes a backplate, a light bar, a first optical film, a frame, and an adhesive layer. By an arrangement of a corresponding optical film adhesively attached to a side of the frame opposite to the light bar through the adhesive layer, heat changes of the corresponding optical film are concentrated on one side of the light bar, which facilitates fulfillment of reliable attachment of the corresponding optical film and narrow bezel design of in-vehicle backlight modules, as well as eliminating or mitigating problems of bright edges and a fluorescence phenomenon in the backlight modules.

The invention provides a light generating system (1000), comprising a plurality of light sources (10), an elongated luminescent body (100), and a body holder structure (2000), wherein: —the plurality of light sources (10) are configured to provide light source light (11), wherein the light sources (10) are solid state light sources, wherein the plurality of light sources (10) are configured in a light source array (15); —the elongated luminescent body (100) has a length (L) and a width (W), wherein the elongated luminescent body (100) comprises luminescent material (120) configured to convert at least part of light source light (11) into luminescent material light (8), wherein the elongated luminescent body (100) and the light source array (15) are configured parallel; —the body holder structure (2000) comprises an elongated slit (205) for hosting the elongated luminescent body (100), wherein the elongated slit (205) has a cavity wall (1205) defining the elongated slit (205) and a slit opening (1206), wherein the slit opening (1206) has a slit opening width (WS1), wherein the cavity wall (1205) and the elongated luminescent body (100) have first shortest distances (d11) that vary over the cavity wall (1205), wherein at least part of the cavity wall (1205) is reflective for light source light (11); —the light sources (10) are configured at second shortest distances (d21) from the elongated luminescent body (100), wherein the second shortest distance (d21) is selected from the range of 40-1000 μm, and wherein one or more of the plurality of light sources (10) are configured to irradiate with the light source light (11) the elongated luminescent body (100) both (i) directly and (ii) indirectly via the cavity wall (1205).

An optical coupler is described herein. The optical coupler includes at least one optical coupler unit. The at least one optical coupler includes an optical coupler entrance face and an optical coupler exit face. The optical coupler entrance face is configured to face, and receive light emitted by, at least one LED during operation. The optical coupler exit face is shaped as a Fresnel lens with a focal point at or behind a light emitting area of the at least one LED and is configured to face a lightguide entrance face of a slab lightguide. The optical coupler exit face has dimensions that match at least a part of the lightguide entrance face. The optical coupler entrance and exit faces are configured to refract light emitted by the at least one LED during operation.

A backlight and a display device are provided herein, which is related to the field of display technology and intends to improve visual effect of the image displayed by the display device. The backlight may include a back plate, a light guide plate and a light source. The back plate includes an accommodation groove, and the light guide plate includes a holding groove at a first side surface of the light guide plate. The light source includes at least one light emitting element. The holding groove is configured to hold at least a portion of the at least one light emitting element, and the accommodation groove is configured to accommodate the light guide plate and the light source.

A light-emitting device includes: a light-emitting unit having a light-emitting surface; a light guide member configured to guide incident light from the light-emitting unit, the light guide member including: a total reflection portion configured to reflect the incident light from the light-emitting unit, and a Fresnel lens portion where light reflected by the total reflection portion is incident; and a movement mechanism configured to move the light guide member relative to the light-emitting unit in a direction that intersects a center axis of the light-emitting surface.

An electronic device includes a housing that at least partially defines an exterior surface and an internal volume. The electronic device also includes a display assembly that is at least partially disposed in the internal volume. The display assembly includes a light guide including a transparent plate and a light source positioned at an end of the transparent plate. A light-blocking component is affixed to the housing and at least partially covers a portion of the transparent plate. A translucent portion extends from the light-blocking component and overlaps the transparent plate.

A backlit partially reflective mirror may be used to form a logo or other structure in an electronic device. The electronic device may have a housing. The housing may have a wall with one or more openings configured to receive one or more corresponding logo-shaped portions of the partially reflective mirror. The partially reflective mirror may be illuminated using backlight illumination from a backlight that is overlapped by the partially reflective mirror. The partially reflective mirror may be formed from one or more protruding structures on a common substrate. One or more thin-film layers may be configured to provide the partially reflective mirror with desired visible light reflection spectrum, a desired visible light transmission spectrum, and a desired visible light absorption spectrum. The reflectivity of the mirror may be configure so that the mirror serves as a one-way mirror for the logo or other structure.

A display device having a curved display surface is provided and includes a back cover; a plurality of light guide plates supported by the back cover; a plurality of light sources configured to cause light to be incident on the light guide plates; and an optical sheet covering the light guide plates, wherein the optical sheet faces the light guide plates.