A method for producing an optical article having a Fresnel microstructure and an injection molding system for producing such an article. The method includes heating and cooling a mold and applying a pressure to a thermoplastic material during injection molding of the optical article to facilitate formation of the Fresnel microstructure.

An imprint lithography stamp includes a stamp body having a patterned surface and formed from a fluorinated ethylene propylene copolymer. The imprint lithography stamp further includes a backing plate with a plurality of through-holes with portions of the stamp body extending into the through-holes to adhere the stamp body to the backing plate. The patterned surface of the stamp body has a plurality of protrusions extending from the stamp body, which are used to form high aspect ratio features at high processing temperatures. A mold design for forming the imprint lithography stamp and an injection molding process for forming the imprint lithography stamp are also provided.

A marked guide includes an elongated body having a bendable core with a length dimension and made of material that is bendable along the length dimension to selectively form various bent shapes, and that retains the bent shapes without external support. The elongated body also has at least one layer of second material provided around the core, the second material being elastomeric or resiliently flexible. An outer surface of the body has a plurality of markings, including a first line marking positioned at a 0-degree point, a second line marking positioned at a 90-degree point, a third line marking positioned at a 180-degree point and a fourth line marking positioned at a 270-degree point.

An electronic device and method for forming a housing of the same is disclosed. The electronic device includes: a housing including: a first plate forming a front surface of the housing, a second plate integrally forming a rear surface and side surface of the housing, wherein a space is enclosed between the front surface, side surface and rear surface, and wherein the second plate includes a first surface forming the side and rear surfaces of the housing, and a second surface disposed opposite to the first surface, and a display disposed in the space and at least partially visible through the first plate, wherein at least a portion of the second surface includes a pattern having surface roughness having a height of 0.1 m to 1 m.

Phosphor elements comprising phosphors in a host material having a phosphorescence-emitting surface with surface nanostructures are disclosed. Phosphor wheels having such phosphor elements, methods of making such phosphor elements, and methods of using such phosphor elements are also disclosed.

A filler-containing resin molded product with a surface which includes irregularities which are transferred from a mold cavity to the surface and have an arithmetic mean roughness of 0.8 m or greater and 10 m or less and a peak arithmetic mean curvature of 400 [1/mm] or greater and 900 [1/mm] or less.

A method for preparing a die for molding of a Fresnel lens includes obtaining a first die block that defines at least one or more portions of a Fresnel lens. The one or more portions defined in the first die block correspond to a plurality of slope facets and a plurality of draft facets. The method also includes adding textures to one or more portions of the first die block that correspond to at least a portion of the plurality of draft facets. A method of making a Fresnel lens includes obtaining the first die block, obtaining a second die block, and coupling the first and the second die blocks. The method also includes providing a molding material into a space defined between the first and the second die blocks, curing the molding material, and removing the Fresnel lens from the first and/or the second die block.

A device for marking a work piece that is at least partially formed or reshaped through a thermal process is provided. The device includes a plurality of heating elements distributed laterally on a surface that is placed against the work piece and can be individually controlled for local heating of a work piece surface. Each of the heating elements includes a solid material with a surface structure and a heating structure. The surface structure includes at least one of a specifically or randomly varied topography. The surface structure can be at least partially heated through the heating structure.

Phosphor elements comprising phosphors in a host material having a phosphorescence-emitting surface with surface nanostructures are disclosed. Phosphor wheels having such phosphor elements, methods of making such phosphor elements, and methods of using such phosphor elements are also disclosed.

A mold for injection molding includes a design-surface-side mold which is capable of forming a design surface of a resin molded product and a non-design-surface-side mold which is capable of forming a mold cavity with the design-surface-side mold. A convex portion is provided in any one of the design-surface-side mold and the non-design-surface-side mold so as to protrude toward the other one. The mold for injection molding is configured to be capable of switching a first mold closing state in which the convex portion is present from any one of the design-surface-side mold and the non-design-surface-side mold over the other one and a second mold closing state in which the convex portion is not present from any one of the design-surface-side mold and the non-design-surface-side mold over the other one.