Methods and systems are provided for separating polarized UV light. In one example, a method may include passing polarized source light through a first prism, the polarized source light including desired light and undesired light, separating the desired light from the fundamental light, and passing the separated desired light through a second prism. The separated desired light which is passed through the second prism may then be further passed through a spatial filter.

A backlight module and a display device are provided. The backlight module includes a polarizing light guide plate configured to convert incident light into first polarized light and second polarized light, a polarization direction of the first polarized light being perpendicular to a polarization direction of the second polarized light.

A planar illumination device according to an embodiment includes a light guide plate, a light source, a top frame, and a plurality of optical sheets. The light guide plate receives light from a light incident side surface. The light source emits light to the light incident side surface of the light guide plate. The top frame covers a light exit surface side of the light guide plate. The plurality of optical sheets are disposed at the light exit surface side of the light guide plate, and an end portion is fixed at a rear side of a frame portion of the top frame.

A curing system for an additive fabrication system includes a light source, a liquid crystal cell, and a first polarizer. The light source is configured to emit light at a wavelength suitable for curing a material. The liquid crystal cell is configured to receive the light from the light source. The first polarizer comprises a polyvinyl alcohol (PVA) matrix and organic dyes impregnated into the PVA matrix.

A liquid crystal display apparatus is provided. The liquid crystal display apparatus includes a graphene LED backlight source, a first polarizing film, a first substrate, a liquid crystal layer, a second substrate and a second polarizing film. The graphene LED backlight source is used for providing light output, the first polarizing film is used for converting the light output from the backlight source into a polarized light. The liquid crystal layer includes liquid crystal molecules used for deflecting the polarized light from the backlight source to form a polarized output light, and the second polarizing film is used for emitting the polarized output light.

A display device and a controlling method are disclosed to achieve peep-proof effect while increasing utilization rate of light. The display device includes a display panel including a first substrate, a second substrate and a plurality of display units, wherein a first light source is disposed on one side of the first substrate; light emitted by the first light source is incident onto the first substrate and propagated in the first substrate in a manner of total reflection; and a light adjusting structure is disposed on a surface of the first substrate close to the second substrate, and is configured to reduce a divergence angle of light emitted by each of the display units of the display panel.

An optoelectronic arrangement having a radiation conversion element and a method for producing a radiation conversion element are disclosed. In an embodiment, an optoelectronic arrangement includes a semiconductor chip having an active region configured to generate radiation, a radiation conversion element arranged downstream of the semiconductor chip in an emission direction and a reflective polarization element arranged downstream of the radiation conversion element in the emission direction. The radiation conversion element has a plurality of conversion elements, each of which has an axis of symmetry, the spatial orientation of the axes of symmetry has a preferred direction and a radiation emitted by the radiation conversion element has a preferred polarization. The reflective polarization element largely allows radiation with the preferred polarization to pass through and largely reflects radiation polarized perpendicularly to the preferred polarization.

A display unit includes a display region and a border region. The display region is configured to include a dark state. A diffusing member is positioned adjacent to the border region such that the diffusing member is coextensive with the border region. A first electromagnetic ray bundle incident on the display region in the dark state produces a first bidirectional reflection distribution function. A second electromagnetic ray bundle incident on the border region produces a second bidirectional reflection distribution function. The diffusing member is configured such that the first bidirectional reflection distribution function is substantially identical to the second bidirectional reflection distribution function. The diffusing member may include a base layer and a surface hologram recorded onto the base layer. The surface hologram is configured to encode a spatial pattern in at least one of the opacity, density, and surface height of the base layer.

A polarizing light emitting plate includes a polarizing layer having a polarizing axis substantially parallel to a first direction, a quantum rod layer including quantum rods aligned in the first direction, and an attachment layer between the polarizing layer and the quantum rod layer and comprising an adhesive material.

A light-emitting diode (LED) structure includes an LED substrate having a first side and a second side opposing the first side. One or more light-emitting diodes are disposed on the first side and arranged to emit light through the LED substrate. In certain embodiments, a wire-grid polarizer is disposed on the second side and arranged to polarize light emitted from the one or more light-emitting diodes. A plurality of different colored LEDs or an LED with one or more color-conversion materials can be provided on the LED substrate to provide white light. A spatially distributed plurality of the LED structures can be provided in a backlight for a liquid crystal display. A polarization-preserving transmissive diffuser can diffuse light emitted from the LED toward the liquid crystal layer and a polarization-preserving reflective diffuser can diffuse light emitted from the LED away from the liquid crystal layer.