A switchable privacy display comprises a spatial light modulator (SLM), a first switchable liquid crystal (LC) retarder and first passive retarder arranged between a first pair of polarisers and a second switchable LC retarder and second passive retarder arranged between a second pair of polarisers. Each switchable LC retarder comprises a homeotropic alignment layer and a homogeneous alignment layer. In privacy mode, on-axis light from the SLM is directed without loss, whereas off-axis light has reduced luminance to reduce the visibility of the display to off-axis snoopers. The display may achieve privacy operation in landscape and portrait orientations. Further, display reflectivity may be reduced for on-axis reflections of ambient light, while reflectivity may be increased for off-axis light to achieve increased visual security. In public mode, the liquid crystal retardance is adjusted so that off-axis luminance and reflectivity are unmodified. The display may be switched between day-time and night-time operation.

A display device includes a light control film including a first alignment pattern. The display device further includes a display panel including a second alignment pattern. The first alignment pattern and the second alignment pattern are at least partially overlapped with one another.

A lens module and an electronic device including the lens module are provided. The lens module includes a lens group and a lens barrel, and the lens group includes a plurality of lenses sequentially arranged from an object side to an image side; the lens barrel comprising an first wall enclosing a receiving cavity for receiving the lens group, and an inner side wall extending from an end of the first wall near the image side away from the lens group, a plurality of first light-extinction grooves arranged in an array are provided on the inner side wall, and each of the first light-extinction grooves extends along an axial direction of the lens barrel.

An information display system having acute-angled diffusion characteristics configured to display an image to inside or outside of a space via a transparent projected member, the information display system including an image projection apparatus, a transparent sheet provided on an inner surface of a display region set on a part of the projected member; and a light direction changing unit that directs a direction of image light toward the transparent sheet of the display region, the image projection apparatus including an image light characteristic converting unit, and an image light control film that restricts an emission direction of the image light being provided on an upper surface of the image projection apparatus, so that the image light is not directly delivered to an observer and the image light reflected by the transparent sheet is recognized by the observer.

An information processing method comprising: exposing a correction image displayed on an image display device having a plurality of pixels to a photosensitive recording medium via a limiting member, the limiting member being provided between the image display device and an exposure surface of the photosensitive recording medium and limiting an angle of light emitted from the image display device to the photosensitive recording medium; acquiring recorded image data, which is data of a recorded image recorded on the photosensitive recording medium through the exposure of the correction image; and deriving a correction coefficient K for correcting a pixel value for each pixel of a display image for each pixel of the image display device based on the recorded image data such that the display image including unevenness of which brightness is complementary to unevenness that occur in the recorded image is displayed on the image display device.

A light guide includes: a first light guide portion including: an optical entrance; and multiple reflecting surfaces including at least one first reflecting surface and at least one second reflecting surface, the multiple reflecting surfaces configured to separate a light flux entered through the optical entrance, into multiple light fluxes; and a second light guide portion including an optical exit. The second light guide portion is configured to cause the multiple light fluxes to propagate therethrough and exit from the optical exit. A part of the light flux strikes and reflects off the at least one first reflecting surface to propagate into the second light guide portion. Another part of the light flux strikes and reflects off the at least one second reflecting surface without striking the at least first reflecting surface, to propagate into the second light guide portion.

A louver includes a light blocking portion having a first surface and a second surface and a base portion made of a transparent material. The light blocking portion is formed in the base portion, being made of a light blocking material. The second surface is a surface that is in contact with the transparent material and that is located on an outer-edge side of the base portion. The first surface is a surface that is in contact with the transparent material and that is opposite to the second surface. A surface roughness of the first surface is larger than a surface roughness of the second surface.

An optical sheet 1 includes an optical function film 10 and protection films 20. The optical function film 10 includes an optical function layer 11. The optical function layer 11 includes optical-element portions that are of two or more different kinds and are arrayed in one direction. The protection films 20 each include a protection layer 21 and an adhesive layer 22. The protection films 20 are peelably provided on a pair of major surfaces of the optical function film with the adhesive layer 22. The protection films 20 extend externally beyond at least a part of the periphery of the optical function film 10. In the protection films, a portion that is beyond at least the part of the periphery of the optical function film 10 includes a portion of the adhesive layer 22.

An optical path control member according to an embodiment comprises: a base substrate defining a first direction and a second direction; and a pattern part disposed on the base substrate, wherein the pattern part includes a plurality of curved regions, and the pattern part (200) extends with a curvature of 0.01 mm to 0.03 mm.

A method of manufacturing an optical film includes providing a base film. The base film includes a substrate defining a first surface and a second surface. The base film also includes a plurality of structures defining an upper surface and at least one side surface extending from the corresponding upper surface to a base portion. The method also includes depositing a catalyst material on each of the plurality of structures and the base portion to form a catalyst layer thereon. The method further includes selectively removing the catalyst layer from the upper surface of each of the plurality of structures and the base portion while retaining an activity of the catalyst layer on the at least one side surface of each of the plurality of structures. The method includes forming a metallic layer on the at least one side surface of each of the plurality of structures.