The present disclosure discloses a lighting device and a lamp apparatus. The lighting device includes a light source supply assembly and a curved light guide element. The light source supply assembly includes a fixing base and a light source module. The fixing base has two opposite first accommodating areas, and the light source module is disposed in at least one of the two first accommodating areas, two ends of the curved light guide element are inserted into the two first accommodating areas, and one end of the curved light guide element corresponding to the light source module has a light source introduction bump, the light source introduction bump has a light incident surface corresponding to the light source module, the light source module supplies a light source, the light source enters from the light incident surface and propagates along the curved light guide element.

A light emitting module includes a light guide plate including a first face, a second face opposing the first face, and a through part penetrating between the first face and the second face, a light emitting device disposed in the through part on a second face side, a light transmissive member disposed on the light emitting device in the through hole on a first face side and between the light emitting device and a lateral wall of the through part, and a first light reflecting member disposed between an upper face of the light emitting device and the light transmissive member while being in contact with the upper face of the light emitting device.

A wide-area solid-state illumination system employing a waveguide with two-sided segmented light emission and one or more compact solid-state light sources, such as LEDs, coupled to an edge of the waveguide. The waveguide is made of a thin sheet of optically transmissive material with a uniform thickness and has a plurality of light extraction areas distributed over the waveguide's area according to a two-dimensional pattern. The light extraction areas are separated from one another by separation areas and have different densities of light extraction surface structures. The surface structures are configured to distribute light from both sides of the waveguide. At least some of the light extraction surface structures are formed by discrete surface microstructures spaced apart from one another by distances which are greater than sizes of the individual discrete surface microstructures and at least five times less than a width of the separation areas.

A light guide film of a mobile device and a mobile device are provided. The light guide film includes a light insulation structure that divides the light guide film into different light guide regions. Each light guide region includes a light inlet configured to receive light from a light source. Different light guide regions correspond to light-transmitting symbols on the mobile device are configured to display different colors.

A backlight module and a display device are provided. The backlight module includes a light guide plate, a light source and a first prism film. The light guide plate includes a main body and plural oblique microstructures. The main body has a light-incident surface and at least one main surface connected to the light-incident surface. The main surface has a first area and a second area. The oblique microstructures are disposed in the first area. Each of the oblique microstructures has a first slope. A light source is disposed adjacent to the light-incident surface. The first prism film is disposed in front of the light guide plate. The first prism film has plural first prism microstructures. Each of the first prism microstructures has a second slope. One of the first slope and the second slope is a positive number, and the other one is a negative number.

Provided are a display panel and a display device, relating to the field of display technologies. The display panel includes a display substrate, a diffusion sheet, a transflective film, and a fingerprint identification circuit. Light of a target wavelength emitted by the fingerprint identification circuit may be reflected by an obstacle, and the light of the target wavelength reflected by the obstacle may be irradiated to the fingerprint identification circuit through at least one through hole in the diffusion sheet. The fingerprint identification circuit performs fingerprint identification according to the received light of the target wavelength reflected by the obstacle. Since an orthographic projection of the fingerprint identification circuit onto the display substrate is within a display area of the display substrate, the fingerprint identification circuit can be prevented from occupying a non-display area of the display substrate. Therefore, the non-display area can be small, and thus, the display device has a relatively high screen-to-body ratio.

A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body, plural first stripe structures and plural second stripe structures. The main body has at least one light-incident surface and a main surface connected to the at least one light-incident surface. The first stripe structures are arranged on plural first regions of the main surface, in which each of the first stripe structures has a first tapered portion. The second stripe structures are arranged on a plurality of second regions of the main surface, in which each of the second stripe structures has a second tapered portion. The first areas and the second areas of the main surface are alternately disposed, and an inherent type of the second stripe structures is different from an inherent type of the first stripe structures.

An illuminating unit includes: a plurality of light sources; a light-guide plate including an end surface disposed to face the plurality of light sources, a first surface that outputs light which is based on incident light from the end surface, and a second surface that faces the first surface and includes a plurality of convex parts; and an optical sheet adhered to side of the second surface of the light-guide plate, with the plurality of convex parts being interposed therebetween. The plurality of convex parts include a plurality of first convex parts disposed in a first region inside the second surface, and one or plurality of second convex parts disposed in at least a portion of a second region on a periphery of the first region inside the second surface.

A light adjustment film is provided. The light adjustment film includes a substrate and a first light adjustment structure layer. The substrate has a first surface and a second surface opposite to each other. The first light adjustment structure layer is disposed on the first surface of the substrate. The first light adjustment structure layer includes a plurality of light adjustment structures. Each of the light adjustment structures has a long axis, a short axis and a thickness. The long axis of the light adjusting structures is parallel to an extending direction. The light adjusting structures are composed of at least 100 types of structures having different shapes from each other. A backlight module having the aforementioned light adjustment film is also provided.

Apparatus can comprise a light source and a light guide plate. The light guide plate can comprise a plurality of features within an interior of the light guide plate. A feature of the plurality of features can comprise a first refractive index that is different from a refractive index of the light guide plate. A spacing between a pair of adjacent features of the plurality of features can be from about 20 micrometers to about 200 micrometers. The apparatus can be used to direct light out of the light guide plate with a peak radiance oriented from 0° to 30° from a direction normal to the first major surface of the light guide plate. Methods of making the apparatus can comprise emitting a burst of pulses from a laser. Methods can comprise focusing the burst of pulses into a line focus within the light guide plate.