In some implementations, a diffusive optical device includes a glass substrate; a first polymer layer disposed on a first surface of the glass substrate; and a second polymer layer disposed on the first polymer layer. A refractive index of the first polymer layer may be different than a refractive index of the second polymer layer. The first surface of the glass substrate may comprise a central region and a margin region, wherein the first polymer layer is disposed on the central region and not the margin region. The first polymer layer may include a plurality of adhesion promoter molecules that causes the second polymer layer to bond to the glass substrate, wherein at least one adhesion promoter molecule, of the plurality of adhesion promoter molecules, comprises a molecularly flexible spacer.

A light projecting apparatus is disclosed. The apparatus has a head with first and second light sources. There is a first reflector and a second reflector respectively disposed proximate to the first and second light sources. Each of the first and second reflectors has a concave reflective surface and a convex reflective surface configured to form light emitted by the respective light source into an illumination pattern having a central region having a substantially uniform distribution of luminous intensity and a taper region having a tapered luminous intensity.

A daylighting film (1) according to an aspect of the invention includes a first base (2), a plurality of daylighting portions (3) constituted by a plurality of polygonal prism structures, and gaps (9) provided between the plurality of daylighting portions (3). Each of the daylighting portions (3) is a polygon that has four vertexes in a sectional shape orthogonal to a longitudinal direction and has all interior angles less than 180, and has a first side that is a side of the polygon corresponding to a surface in contact with the first base (2) and a plurality of vertexes including a first vertex and a second vertex that are vertexes corresponding to both ends of the first side, and a third vertex that is not positioned on the first side. A length of a line perpendicular to the first side passing the third vertex is longer than lengths of lines perpendicular to the first side passing vertexes other than the third vertex among the plurality of vertexes, and a shape of the daylighting portion 3 is asymmetrical with the line perpendicular to the first side passing the third vertex as a center.

A heat-insulation material does not cause deterioration in heat-insulation performance and any loss of components included therein, and possesses an excellent radiation-preventing function. The heat-insulation material includes: a first heat-insulation layer that includes a first silica xerogel and a first radiation-preventing material; and a third heat-insulation layer that includes a third silica xerogel and second fibers, wherein the first heat-insulation layer and the third heat-insulation layer are layered. An electronic device includes the heat-insulation material. Yet further disclosed is a method for producing the heat-insulation material.

A plenoptic imaging device includes an image multiplier for obtaining a multitude of optical images of an object or scene; and a diffuser screen. The image multiplier may be a kaleidoscope. The device may include an array of optical filters for filtering the multitude of optical images.

Various embodiments disclosed herein describe electromagnetic actuator arrangements having nested carriers. The nested carriers include an intermediate carrier moveably connected to a stationary base, and an inner carrier moveably coupled to the intermediate carrier. The inner carrier may carry an optical component, such as a diffuser, and may move the optical component relative to the stationary base by controlling the movement of the intermediate and/or inner carrier.

A limiting viewing angle sheet comprises a substrate, a transparent layer and an opaque pattern. The transparent layer is disposed on the substrate, and comprises a top plane and a plurality of grooves formed on the top plane, wherein the width of each of the grooves is decreased from the top plane to the substrate. The opaque pattern is formed within the grooves, and comprises a top surface and a plurality of side planes, wherein the transparent layer is exposed from the top surface, and the side planes extend from the top surface. The opaque pattern comprised different included angels respectively between the top surface and two of the side planes.

A flexible touch panel includes a display unit, a touch sensing unit and a protective layer. The touch sensing unit is bounded to the display unit, and includes two touch control circuit layers and a waveplate. The waveplate is disposed between two touch control circuit layers, and includes a first plane and a second plane opposite to the first plane. One of the touch control circuit layers is formed on the first plane. The protective layer is bounded to the touch sensing unit, and the touch sensing unit is disposed between the display unit and the protective layer.

There is provided a display apparatus including a holding member disposed between a peripheral part of an optical sheet and a peripheral part of a diffusion plate. The holding member has a first end portion contacting the peripheral part of a rear surface of the optical sheet and a second end portion contacting the peripheral part of the first surface of the diffusion plate. The holding member has a first holding projection for holding the diffusion plate. The first holding projection protrudes from the second end portion along the first surface of the diffusion plate.

An optical transmittance adjustment device including a light guide plate and an optical transmittance adjustment film is provided. The light guide plate has a first surface and a second surface, wherein the second surface is opposite to the first surface and has a plurality of light scattering microstructures. The optical transmittance adjustment film is located at a side of the light guide plate, and the light scattering microstructures are located between the optical transmittance adjustment film and the light guide plate.