Disclosed is a lighting strip (100) comprising an optical waveguide (120) extending in a length direction of said strip and having a tapered portion tapering from a thin edge (124) to a thick edge (122) in a width direction of said strip; at least one solid state lighting element (110) incorporated in the optical waveguide and arranged to emit light into the optical waveguide in said length direction; and a light scattering pattern (130) on the thick edge of the tapered portion for redirecting the emitted light to the thin edge of the tapered portion. A lighting system, panel support element (210) and modular panel system (200) including such a lighting strip (100) are also disclosed.

According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate and including an end portion, a liquid crystal layer provided between the first substrate and the second substrate and including a polymer in a shape of a streak and a liquid crystal molecule, a light-emitting element having a light emitting portion opposed to the end portion, and a light guide located between the end portion and the light emitting portion.

To provide a light guide member which has less components than conventional ones and has stable wavelength conversion efficiency; and a light source unit using the light guide member. A light guide member includes: a light guide plate; a receiving space formed in the light guide plate to face a light entrance plane; and a wavelength converting material placed in the receiving space. With the use of the light guide member, the number of components can be reduced and stable wavelength conversion efficiency can be achieved. Further, the production process can be facilitated and the production cost can be reduced.

A primary optic for a light-emitting diode or device (LED) includes a tilted wedge atop a truncated compound parabolic concentrator (CPC). The CPC includes an input face and a lower exterior surface defined by a tilted parabolic segment rotated about an axis. The bottom end of the lower exterior surface joins the perimeter of the input face. The tilted wedge includes an upper exterior surface above the lower exterior surface, and an interior conical surface surrounded by the lower and the upper exterior surfaces. The upper exterior surface is defined by a tilted straight line rotated about the axis. The interior conical surface is defined by a smooth curve rotated about the axis. The interior conical surface has a vertex located at the axis and within the lower exterior surface. The top ends of the interior conical surface and the upper exterior surface join to define an output aperture.

The present application discloses a light pipe assembly having a light pipe with a proximal end, an opposing distal end, a length between the proximal end and the distal end, and a surface, the surface having an emitting portion and an overlay portion, where the light pipe is a material capable of transmitting light with a first refractive index; and a reflective secondary surface having a second refractive index and a width, the reflective secondary surface positioned adjacent the overlay portion of the light pipe, where the first refractive index is greater than the refractive index of air, and the second refractive index is greater than the first refractive index. In at least one embodiment, the reflective secondary surface is a non-metallic material capable of reflecting light. In at least one embodiment, the width of the reflective secondary surface varies along the length of the light pipe.

A side-incidence backlight module including a light guide plate, a light strip and a light leakage preventing member. The light strip is disposed at a side of a light incident surface of the light guide plate and includes at least one light emitting element. The light leakage preventing member is located between the light strip and the light guide plate and extends along a width direction of the light guide plate. The light leakage preventing member includes at least one groove. An opening of the groove faces the light strip. The at least one light emitting element is at least partially accommodated in the groove.

Disclosed are a display screen module and a terminal device. The display screen module may include: a backlight module, an LCD screen arranged above the backlight module, a light-transmissible cover plate arranged above the LCD screen, a first light source arranged in a backlight light source of the backlight module, a reflective component arranged between the LCD screen and the cover plate, and a light-receiving module configured to receive light reflected by the reflective component so as to carry out fingerprint recognition.

A display apparatus including an image unit, a light source module and a transparent plate is provided. The image unit has an image display surface which includes a first side and a second side opposite to the first side. The light source module is disposed at the first side of the image display surface, and adapted to serve as a front light source of the image unit to provide a light beam to the image display surface. The transparent plate is disposed above the image display surface.

Light recycling within a waveguide is achieved by mode conversion instead of resonance. A structure is provided in in which light makes multiple passes through the same waveguide by converting the mode to a different mode after each pass and rerouting the light back into the same waveguide. The structure includes a bus waveguide and at least one mode converter device disposed at or adjacent each of two opposing ends of the bus waveguide, wherein each mode converter devices is configured to receive light having a receiving mode along a first direction and to cause light having a different mode from the receiving mode to propagate in a second direction opposite the first direction.

A light source device includes a light source configured to emit illumination light and a flat plate shaped transparent lightguide element. The lightguide element includes: an incident surface facing the light source; a reflecting surface formed in one of side surfaces of the lightguide element to reflect the illumination light incident into the lightguide element from the incident surface; and an exit surface formed in a side surface of the lightguide element on an opposite side to the reflecting surface, the illumination light reflected by the reflecting surface exiting from the exit surface. The reflecting surface is formed into a curved surface, the curved surface collimating the illumination light reflected by the reflecting surface in a surface including a lengthwise direction of the reflecting surface, and the reflecting surface is formed into a concave mirror in a surface including a short direction of the reflecting surface.