The present disclosure is directed to lamina(e) comprising cube corner elements, a tool comprising an assembly of laminae and replicas thereof. The disclosure further relates to retroreflective sheeting.

A light assembly for a motor vehicle according to an exemplary aspect of the present disclosure includes, among other things, a light source, and a lens arrangement configured to direct light from the light source in a first direction toward a running board and a second direction away from the vehicle. A method is also disclosed.

A lighting system with a laser light source for radiating light; a wavelength conversion element for receiving the radiated light from the light source and for re-emitting wavelength converted white light; and a reflector element for reflecting the light received from the wavelength conversion element is disclosed. The reflector element comprises a reflective surface and a micro-patterned surface comprising an array of micro-focal elements. Each micro-focal elements is configured to converge or diverge incident light from the wavelength conversion element.

Disclosed is a retro-reflective thread 100 including an internal section 10; a plurality of fibers 12, each fiber comprising a respective longitudinal axis and a respective surface and each fiber comprising a first material that is at least partially optically transmissive, and wherein said plurality of fibers are configured with their respective longitudinal axes substantially co-linearly aligned with one another and said plurality of fibers are interconnected in series around said internal section and wherein a first part 12b of said respective surface of each of said plurality of fibers faces into said internal section; and a reflective material 14 provided on said first part of said respective surface of each of said plurality of fibers.

Multi-sided prism printing systems and processes that apply a light-blocking material (e.g., a polymer) to at least part of the surfaces of at least two sides of a prism at the same time. The multi-sided prism printing systems and processes may significantly increase throughput of prism printing when compared to conventional prism printing methods in which only one side of a prism is printed at a time. In addition, the multi-sided prism printing systems and processes may provide a more accurate alignment of the printed patterns on lateral faces of the prism when compared to conventional prism printing methods in which only one lateral face of a prism is printed at a time.

Provided is a processing method for a single-column and multi-row equivalent negative refractive flat lens, including: processing an optical material into parallel plates including upper and lower surfaces each being a polished surface; cutting the parallel plates into strip-shaped optical waveguides; plating each polished surface with an aluminum film; attaching and gluing the surfaces together to form a single-column and multi-row strip-shaped optical waveguide array; curing the strip-shaped optical waveguide array through heating treatment; cutting the plate of the strip-shaped optical waveguide array into two sets of plates of strip-shaped optical waveguide array arranged in a direction of 45 degrees; and gluing the two sets of plates in such a manner that arrangement directions of the two sets of plates are perpendicular to each other, and then adding protective window sheets on both sides of the glued plates.

Methods of making tiled articles and molds used to make retroreflective articles. The methods include forming a prism array on a master substrate and forming a replica of the master. A reference edge is formed on the replica, thereby reducing the size of the prism array, yet maintaining a lateral dimension of the replica to maintain ease of handling of the replica. The replica is copied and the reference edge on the copied tiles are exposed, such that the reference edge can be mated and secured face-to-face with a reference edge on other tiles in order to form a tiled article. The tiled article is used as a mold to produce retroreflective articles or can be further duplicated and mated to form larger tiled articles to be used as molds. Tiled articles used as molds and retroreflective articles produced from the molds are also disclosed.

A decorative film that exhibits visual effects such as, e.g., stereoscopic effect, luxurious feel, and the like; and can also exhibit complex flip-flop properties that have expansion, depth, fluctuation, and the like, and whereby a pattern can be made visible or invisible depending on the viewing angle. In one embodiment, the decorative film can include, in order, a base layer and, adjacent to the base layer, a brightening layer having a concavo-convex surface; or a brightening base layer including a brightening material and having a concavo-convex surface; adjacent to the brightening layer or the brightening base layer, a transparent resin layer; and, adjacent to the transparent resin layer, a semi-transparent metallic layer.

A retroreflector includes an arrangement of triples, each having three side surfaces, which are disposed in the manner of a cube corner and stand approximately perpendicular on one another. The retroreflector can be produced from a carrier material by injection molding. An optical silicone resin is used as the carrier material. The retroreflector is based on triple mirrors that are both easily unmolded from a die and easily applied to curved surfaces even after unmolding or are usable for reflection of ultraviolet light.

The invention provides a reflector (2) comprising a reflector wall (20), the reflector wall (20) comprising a first wall surface (22) and a second wall surface (23) defining said reflector wall (20), the reflector wall (20) comprising a light transmissive material (21), wherein the reflector wall (20) has a first dimension (d1) and a second dimension (d2) defining a first reflector wall area, wherein each wall surface (22,23) comprises a plurality of parallel arranged elongated corrugations (210), wherein the corrugations have corrugation heights (h2) relative to recesses (220) between adjacent corrugations (210) and corrugation widths (w2) defined by the distance between adjacent recesses (220) at the respective wall surfaces (22,23), wherein the corrugations (210) have curved corrugation surfaces (230) between said adjacent recesses (220) having corrugation radii (r2) at the respective wall surfaces (22,23), and wherein over at least part of one of the first dimension (d1) and the second dimension (d2) one or more of (i) the corrugation heights (h2), (ii) the corrugation widths (w2), (iii) the corrugation radii (r2), and (iv) a shortest top-top distance (w12) of corrugations tops (211) configured at different wall surfaces (22,23) vary over said wall dimension (d1,d2) for at least one of the wall surfaces (22,23). The reflector (2) has a first end (3) and a second end (4), wherein a third distance (d3) between the first end (3) and the second end (4) is bridged by one or more reflector walls (20), wherein the one or more reflector walls (20) are configured tapering from the second end (4) to the first end (3), and wherein the reflector (2) has a reflector cavity (5).