An optical element comprises a light transmitting substrate (100), the light transmitting substrate comprises a first surface, and the first surface is provided with a plurality of strip-shaped prisms (200) which are arranged parallel to each other along a predetermined direction and extend along another predetermined direction. In the direction along which the plurality of strip-shaped prisms are arranged, a side of each strip-shaped prism close to a center of the light transmitting substrate has a refractive surface (201); from an end of the refracting surface close to the center of the light transmitting substrate to another end of the refracting surface close to an edge of the light transmitting substrate, the refracting surface inclines gradually along a direction away from the first surface. From the strip-shaped prism nearest to the center of the light transmitting substrate to the strip-shaped prism farthest to the center of the light transmitting substrate, an angle between the refracting surface and a normal of the first surface is gradually increased. A light guide plate (10), a prism (20), a backlight module and a display device are further provided.

An optical system comprises a turning film and a lenticular diffuser. The lenticular diffuser comprises a structured surface comprising a plurality of microstructures each comprising a lenticular prism having linear end sections connected by a blend section separated by a substantially flat land area, wherein the blend section shape is a segment of an ellipse of 2nd, 4th or 6th order polynomial.

An optical assembly includes a first optical film and a second optical film. The first optical film includes first microstructures arranged in a chessboard arrangement based on a first direction. The second optical film includes second microstructures arranged in a chessboard arrangement based on a second direction. The angle between the first direction and the second direction is greater than or equal to 30 degrees and less than or equal to 60 degrees.

This beam shaper for an aircraft headlight comprises a light input surface (3) and a light output surface (6), the output surface comprises prism-shaped areas so as to deflect a light beam transmitted between the light input surface and output surface by guiding the beam in two directions (D1, D2) which are oblique relative to an optical axis (A) of the beam shaper.

Examples are disclosed that relate to backlit electronic displays that may help to avoid apparent non-uniform image brightness across a displayed image. One example provides an electronic display comprising a light guide, an image-forming layer, and a light-steering layer. The light guide is configured to release light over a display area. The image-forming layer is configured to form a display image by modulating the light released by the light guide. The light-steering layer is configured to steer together the light released from a peripheral region of the light guide and the light released from a central region of the light guide.

The present disclosure relates generally to light management constructions comprising microstructured prismatic elements useful in the preparation of sun-facing light redirecting films having reduced glare.

The present disclosure relates generally to light management constructions comprising microstructured prismatic elements useful in the preparation of room-facing light redirecting films having reduced glare.

The present disclosure relates to articles and methods of making light redirecting film constructions comprising a microstructured optical film bonded in selected areas to another film. This type of assembly may serve various purposes. For example, the assembly may protect the structured film, provide additional functionality, such as diffusion, and/or facilitate attachment of the microstructured optical film to a mounting surface, such as a window.

Disclosed herein is a display apparatus. The display apparatus includes a backlight unit configured to emit light, a display panel positioned in front of the backlight unit; and an optical film positioned in front of the display panel, and the optical film includes a base layer, a first refractive layer positioned in front of the base layer, a second refractive layer positioned in front of the first refractive layer and having a lower refractive index than the first refractive layer, a third refractive layer positioned at the rear of the base layer, and a fourth refractive layer positioned at the rear of the third refractive layer and having a lower refractive index than the third refractive layer.

A light transmissive substrate for transforming a Lambertian light distribution into a batwing light distribution. The light transmissive substrate includes a first surface comprising a plurality of microstructures, and a second surface on a side of the substrate opposite the first surface. The substrate is configured to receive light in a Lambertian distribution from a light source at the first surface and transform the light into a batwing distribution exiting the second surface. The batwing distribution having a peak intensity at about ±30° to about ±60° from X and Y axes, and a minimum intensity at nadir.