According to one embodiment, a display device includes a first display panel including a first and second transparent substrate, a first liquid crystal layer, and a first light-emitting element, a second display panel including a third and fourth transparent substrate, a second liquid crystal layer and a second light emitting element, a filling member provided between the first and second display panel and having a refractive index equal to that of the first to fourth transparent substrates, a first light guide bonded to the first and second display panel, and a first adhesive member provided between the first display panel and the first light guide and between the second display panel and the first light guide.

A plurality of waveguide display substrates, each waveguide display substrate having a cylindrical portion having a diameter and a planar surface, a curved portion opposite the planar surface defining a nonlinear change in thickness across the substrate and having a maximum height D with respect to the cylindrical portion, and a wedge portion between the cylindrical portion and the curved portion defining a linear change in thickness across the substrate and having a maximum height W with respect to the cylindrical portion. A target maximum height D.sub.t of the curved portion is 10.sup.−7 to 10.sup.−6 times the diameter, D is between about 70% and about 130% of D.sub.t, and W is less than about 30% of D.sub.t.

The present disclosure relates to a display panel. The display panel includes a display substrate, an opposite substrate, and a first adhesive layer and light guide layer located between the display substrate and the opposite substrate and stacked on each other. The first adhesive layer includes a photo-cured layer formed by curing a photocurable material layer. And the light guide layer is used to direct light to the photocurable material layer during the curing to form the cured layer.

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 quantum dot composite, an optical film, and a backlight module are provided. The quantum dot composite includes a polymerizable polymer and a plurality of quantum dot particles dispersed in the polymerizable polymer. A particle size of the plurality of the quantum dot particles ranges from 8 nm to 30 nm. Based on a total weight of the polymerizable polymer being 100 wt %, the polymerizable polymer includes: 10 wt % to 30 wt % of a multifunctional acrylic monomer, 8 wt % to 60 wt % of a thiol compound self-assembled on surfaces of the plurality of the quantum dot particles, and 1 wt % to 5 wt % of a photoinitiator.

A single edge lit lighting module is disclosed which produces tailored light distributions valuable in many illumination applications. The lighting module comprises a unique light scattering optical element which is aligned with one or more LED light sources along one of its edges and works in combination with configured reflective surfaces. Light distributions attainable using the invention include, but are not limited to, symmetric and asymmetric bi-lobed “batwing” distributions for wide area direct and indirect lighting, and tilted or asymmetric distributions for perimeter lighting. It is also possible to achieve more rounded and symmetric distributions by an additional diffuser as a cover lens. The invention's unique single edge lit construction provides the means for achieving the lighting distributions without the need for conventional two lit edges and within a compact form factor with narrow width. The invention is particularly well-suited for linear lighting fixtures that are surface mounted, suspended or recessed. Various embodiments also provide means for adjusting light distributions dynamically to control light output characteristics by controlling the input signals to the LED board included in the assembly.

A method for manufacturing a light distribution structure in the form of an optically functional layer includes at least one three-dimensional feature pattern established in a light-transmitting carrier by a plurality of three-dimensional optical features. The method also includes manufacturing a patterned master tool for the at least one three-dimensional feature pattern by a piezoelectric cutting method selected from a fast tool servo method and a stylus engraving method, or by a laser engraving method, and transferring the at least one three-dimensional feature pattern onto the light-transmitting carrier.

A light field display, having at least one laser emitter, an optical modulator for modulating light from the laser emitter with video information; a beam focus modulator; an array of beam scanning elements; an electrically controllable beam focus modulator; and at least one at least one waveguide having at least one transparent substrate, an input grating and an output grating for extracting light from the waveguide; and an eye tracker is provided.

Provided is an optical glass that contains TiO.sub.2 and/or Nb.sub.2O.sub.5 as components of a glass composition, achieves a high light transmittance, and has excellent mass productivity. An optical glass contains TiO.sub.2 and Nb.sub.2O.sub.5 in a total amount of 20% by mole or more as components of a glass composition and has a basicity of 12 or more.

An apparatus with a grating structure and a method for forming the same are disclosed. The grating structure includes forming a recess in a grating layer. A plurality of channels is formed in the grating layer to define slanted grating structures therein. The recess and the slanted grating structures are formed using a selective etch process.