An apparatus for producing an optically variable film includes a laser configured to emit a beam, a telescoping lens section having a first lens and a second lens spaced apart by a first distance and an interferometer configured to direct the beam toward a workpiece. The laser may be operated at a predetermined power level and the first and second lenses are sized and spaced relative to one another to direct the beam onto the workpiece at about 200-230 dots per inch. The workpiece may include a polyethylene terephthalate (PET) layer configured to be ablated by the beam, forming a microstructure in the surface of the layer. The microstructure may be randomized and used to present non-chroma visual effects.

A laser irradiation apparatus includes a laser source configured to emit a laser beam to an object that is being conveyed to allow the object to be irradiated with the laser beam; a rotation detector configured to detect rotation of the object to obtain information on the rotation of the object; and circuitry configured to control laser irradiation onto the object based on the information on the rotation of the object.

A method for manufacturing a vehicle part, including the steps of a) overmolding a semi-transparent film on a transparent or translucent part, b1) applying a paint layer on the semi-transparent film, b2) applying a varnish layer on the paint layer, and b3) partially irradiating the paint layer and the varnish layer with laser radiation so as to etch the paint layer and the varnish layer, step a) being implemented before step b1) or after step b3).

One aspect refers to an electrode for a medical device including a monolithic substrate having at least one surface including a continuous pattern, wherein the continuous pattern is formed by at least one set of hollow lines, and wherein the at least one set of hollow lines forms the boundaries of repeating elements. One aspect further relates to a medical device including the electrode according to one embodiment, and to a process for preparing the electrode according to one embodiment.

A laser etching apparatus includes a chamber, a laser port, a laser emitter, a particle grabber, and a revolving window module. The chamber is configured to receive a substrate. The laser port is disposed below the chamber in a downward direction. The laser emitter is configured to emit a laser to the substrate disposed within the chamber through the laser port. The particle grabber is disposed within the chamber and includes a body disposed over the laser port. An opening is formed through the body. The opening is configured to pass the laser therethrough. The revolving window module includes a revolving window and a driving part configured to drive the revolving window. The revolving window is disposed between the particle grabber and the laser port.

Systems and methods disclosed herein relate to texturing a metal surface. A method for texturing a metal surface comprises disposing a first ceramic coating onto a first surface on the metal surface, applying a media to the first ceramic coating, disposing a second ceramic coating onto the media, and/or heat treating the metal surface for an end duration.

A method and a device for processing a unidirectional flow surface, the method includes: generating a grayscale map having gradually changed grayscale values; generating a holographic phase map having a bionic light spot with gradually changed energies based on the grayscale map; loading the holographic phase map onto a spatial beam shaper; and focusing a laser beam on a surface of an object to be processed after the laser beam passes through the spatial beam shaper, to process structural units having unidirectional flow characteristics on the surface of the object to be processed.

An article having a metal substrate and a channel in the metal substrate which is partly or completely open to the surface, wherein the cross section of the channel has a local width maximum (5) between the channel base (7) and the contact plane (1), measured parallel to the contact plane and at right angles to the longitudinal channel axis in the section perpendicular to the surface. (FIG. 1a)

A computer-implemented method for generating laser engraving instructions for performing a patterning process on a workpiece surface includes receiving a first input value indicating a first laser-pulse pattern and a second input value for a laser parameter associated with a laser-engraving system; and generating a machine-command sequence for the laser-engraving system based on the first input value and the second input value.

A method is provided for producing a glass or glass ceramic article that includes: providing a sheet-like glass or glass ceramic substrate having two opposite faces, which in the visible spectral range from 380 nm to 780 nm exhibits light transmittance of at least 1% for visible light that passes from one face to the opposite face; providing an opaque coating on one face where the coating exhibits light transmittance of not more than 5% in the visible spectral range from 380 nm to 780 nm; and directing a pulsed laser beam onto the opaque coating and locally removing the coating by ablation down to the surface of the glass or glass ceramic article, repeatedly at different locations, thereby producing a pattern of a multitude of openings defining a perforated area in the opaque coating, so that the opaque coating becomes semi-transparent in the area.