The present invention discloses a method of forming an optical sheet. The method comprises: providing a mold having a first surface; forming a plurality of first concave shapes on the first surface of the mold such that the first surface of the mold is changed to a second surface of the mold; forming a plurality of second shapes on the plurality of first concave shapes such that the second surface of the mold is changed to a third surface of the mold; and using the third surface of the mold to emboss a film on a substrate to form a composite structure corresponding to the combination of the plurality of first concave shapes and the plurality of second shapes.

The present invention provides a lenticular sheet including a transparent resin substrate stretched in at least one direction, an ink receiving layer provided on one surface side of the transparent resin substrate, and a lenticular lens layer provided on the other surface side of the transparent resin substrate, in which the ink receiving layer is formed on the one surface side of the transparent resin substrate by stretching a transparent resin substrate which is not stretched or stretched in a first direction and on which a coating layer is formed by coating one surface side of the substrate with a coating solution for forming an ink receiving layer; a method for manufacturing a lenticular sheet; and a lenticular display body.

Methods and devices for a lenticular image product include a print media, a printed faceted surface disposed on the print media, an interlaced image printed on the printed faceted surface, and a printed lenticular lens printed on the printed interlaced image and the printed faceted surface. The lenticular lens can be disposed over the print media selectively.

A method for producing a device wherein, in a first production step, a translucent substrate is prepared, and wherein, in a second production step, a transparent material is printed onto the translucent substrate by a printing method. In the second production step, applications in the form of droplets of transparent material are arranged on the translucent substrate. In the second production step, an element which is formed from multiple applications and further applications is generated. The droplets to generate the element are deposited circularly in concentric rings, and the outermost deposited droplets have a first diameter, and the droplets deposited at a center have a second diameter that is different from the first diameter to build up a lens-like light-directing structure.

There is described a method of creating a transparent window (W*) in a security, especially paper, substrate (1) for security printing applications, the method comprising the steps of (i) providing a security substrate (1), (ii) forming an opening (10*) into and through the security substrate (1), and (iii) filling the opening (10*) with transparent material (2) thereby forming the transparent window (W*). The filling of the opening (10*) with the transparent material (2) is carried out in a state where the opening (10*) is open on both sides of the security substrate (1) and extends through the security substrate (1), the filling of the opening (10*) including the application of a first side (I) of the security substrate (1) against a supporting surface (21A) of a supporting member (20, 21) in such a way as to block one side of the opening (10*), while the transparent material (2) is applied inside the opening (10*) from the other side (II) of the security substrate (1). Advantageously, the method further comprises the step of forming a field of lenses (L) on one side of the transparent window (W*), in particular by replicating the field of lenses (L) directly into the transparent material (2) filling the opening (10*). Also described is a suitable device designed to fill the opening (10*) with the transparent material (2).

A lens sheet includes a base made of transparent resin, a lens part formed on the base and having a convex lens, and a protrusion formed around the lens and having a height lower than a height of the lens. A gap is provided between the lens and the protrusion.

The marker according to the present invention comprises: a first surface which has light transmissivity, and in which a plurality of cylindrical projection surfaces each having a first ridge line oriented in a first direction are arranged in a second direction that is perpendicular to the first direction; and a second surface which has a plurality of to-be-detected parts that are projected onto the plurality of projection surfaces, and a reflection part that is a region other than the to-be-detected parts and includes a plurality of depressions or a plurality of protrusions. The reflection part has either a plurality of depressions which are arranged such that second ridge lines are disposed periodically or a plurality of protrusions which are arranged such that second trough bottom lines are disposed periodically. The second ridge lines or the second trough bottom lines are slanted with respect to the first ridge lines.

The present invention discloses a method of forming an optical sheet. The optical sheet comprises a substrate and a film. The substrate has a first surface and a second surface opposite to the first surface. The film has a third surface and a fourth surface opposite to the third surface. The third surface of the film is on the first surface of the substrate. The fourth surface of the film comprises a structure corresponding to a combination of a plurality of first convex shapes and a plurality of second convex or concave shapes superimposed on the plurality of first convex shapes.

A systematic approach to producing multi-dimensional photon images on a computer platform having applications to a plurality of input image(s) from various sources, and applications to coordinate and adjust numerous variables which determine the quality of the image, such as the size of the imported images, the output image size, the resolving power of the viewing screen and the width of the resolving elements, the dots per inch of the output device (or pixels per inch), the desired nearest object, the desired furthest object and the determination of the central or the key subject, rules of interphasing, the number of frames or layers, the minimum parallax, and the maximum parallax, and, thus, provide a digital multi-dimensional image without jumping images or fuzzy features or other visual distortions by creating high quality output images both in the form of a printed hardcopy or as a viewed image on an appropriate viewing device. The digital multi-dimensional image platform based system controls the position and path of light from the original object to the human visual system.

A method of forming packaged lens modules is disclosed which includes: securing first ends of a plurality of lens modules equidistantly on a first mold plate; providing a second mold plate matching with second ends of the lens modules and securing the second mold plate on the second ends of the lens modules; filling a black material in gaps between the lens modules; and removing the first and second mold plates after the black material is cured and performing a dicing process. The method can effectively block lens openings to protect lenses from being contaminated and can eliminate the need for adhesive application and removal generally performed on second ends of the lens modules, thereby resulting in time savings and an efficiency improvement. Additionally, a height of the resulting packaged lens modules can be modified for back focal length compensation thereof by changing the size of the second mold plate.