Abstract:
Described is a method of providing a rubber article (100) with a digital code pattern (102), wherein the rubber article (100) comprises a cured polymer material (104), the method comprising: Generating, e.g. by means of electromagnetic radiation (110), a digital code pattern (102) in the cured polymer material of the rubber article, the digital code pattern (102) comprising a first surface portion (106) and a second surface portion (108) having different optical reflectivity. Generating the digital code pattern (102) may include generating protrusions (114) or holes (126) in the second surface portions (108). The digital code pattern (102) may identify the rubber article (100) e.g. within a batch of rubber articles. Described is also a rubber article (100) comprising a digital code pattern (102), a rubber article marking device and a computer program product for controlling a rubber article marking device.
Abstract:
Generally, polymeric members and laser marking methods for producing visible marks on polymeric members, such as on thin and/or curved surfaces. The laser marking methods can include methods of laser marking straws with the step of matching laser source properties to the properties of straws being marked or with the step of laser marking straws having photochromic dyes.
Abstract:
A laser projection system is disclosed. The laser projection system includes a laser light source that is configured to selectively provide laser light. The system also includes an input beam deflection unit receiving the laser light and configured to deflect the laser light . The input beam deflection unit is configured to selectively change the angle of deflection of the laser light. A selection lens is also a part of the laser projection system and is configured to refract the laser light. A mask having at least one aperture is used. The mask receives the refracted laser light from the selection lens. A selected area of the mask is selectively illuminated by the refracted laser light. Further, a collection lens receives at least a portion of the laser light from the at least one aperture and refracts the portion of laser light. Further still, the laser projection system includes a redirection unit that receives the refracted portion of the laser light from the collection lens and the redirection unit deflects the portion of the laser light to a target.
Abstract:
A system for semiconductor wafer (3) marking is provided. The system includes: (a) a first positioning subsystem for positioning a laser marking field relative to a wafer, the positioning along a first direction; (b) an alignment vision subsystem; (c) a laser marker including a laser for marking a location within the marking field with a laser marking beam; (d) a calibration program for calibrating at least one subsystem of the system; and (e) a controller. The marking field is substantially smaller than the wafer, and the laser marker includes a scan lens for optically maintaining a spot formed by the beam on the wafer within an acceptable range about the location within the marking field so as to avoid undesirable mark variations associated with wafer sag or other variations in depth within the field.
Abstract:
The invention relates to a method and to a device for characterizing and especially for labeling the surfaces of optical glasses (6) by means of UV light which is especially generated by an excimer laser (1). The inventive method and the corresponding device are characterized by a combination of the following features: focusing the light beam by means of an individual optical element (5), displacing the surfaces to be characterized and the point of focus of the light beam in a direction of the tangential plane in the vertex of the surface relative one another, and additionally displacing the surface to be characterized in a direction of the normal in the vertex in such a manner that the point of focus lies on the surface.
Abstract:
Laser output (114) is employed to mark an article (100) including a layer (104) supported by a substrate (102), wherein the layer (104) has a thickness (t) that is less than or equal to 50 microns. The laser output (114) is focused to a numerical aperture diffraction-limited spot size (32) of less than or equal to 5 microns at a focal point (80) of the beam waist (90) and directed into the layer (104) to form a plurality of structures comprising a plurality of laser-induced cracks within the layer (104) and within a region of the article (100), wherein the laser-induced cracks terminate within the layer (104) without extending to the substrate (102) or an outer surface (108) of the layer (104), and wherein the plurality of structures are configured to scatter light incident upon the article (100).
Abstract:
Es ist ein Verfahren zum Markieren von Bauteilen (2) mittels einer Vielzahl von Pulsen (4) eines gepulsten Laserstrahls eines Lasers offenbart. Bei der Erstellung der Markierung (12), wird zunächst ein Schmelzauswurf gebildet. Anschließend erfolgt das Abtragen des Schmelzauswurfs wobei der gepulste Laserstrahl mit einer zweiten Geschwindigkeit über dem Schmelzauswurf verfahren wird. Die zeitlich aufeinander folgenden Pulse (4) überlappen kaum oder nicht.
Abstract:
The present invention provides a method and apparatus for marking vehicles using a laser. In order to allow any part of the vehicle to be marked using a simple, strong laser beam delivery conduit, the laser is mounted on a structure (101) which extends over a vehicle station (102). The structure defines at least three laser mounting positions and preferably four laser mounting positions (A, B, C, D) spaced apart from one another in two dimensions for mounting at least one laser apparatus (107). The laser apparatus (107) comprises a laser emitter (108) for producing a laser beam adapted to mark a part of the vehicle and laser beam delivery means (110) for delivering a laser beam from the laser emitter (108) to a selectable point of the vehicle station (102). The laser apparatus (107) is movable between at least two and preferably all four of the laser mounting positions (A, B, C, and D).
Abstract:
Der Erfindung, die ein Verfahren und eine Anordnung zur Erzeugung einer Lasergravur in eine Oberfläche eines Substrates betrifft, wobei während eines Graviervorganges ein Laserstrahl, der durch einen Lasergenerator erzeugt, über Strahlformungsblenden geformt, in einer Fokussiereinheit fokussiert und in Strahlintervallen oder ständig auf die zu gravierende Oberfläche gerichtet wird, liegt die Aufgabe zugrunde, eine individuelle und frei programmierbare Lasergravur in der Oberfläche eines Substrates unter einer Verringerung des Herstellungs- und Wartungsaufwandes zu ermöglichen. Verfahrensseitig wird dies dadurch gelöst, dass das Substrat während des Graviervorganges in einer senkrecht zur Strahlrichtung liegenden x-y-Ebene bewegt wird. Anordnungsseitig ist vorgesehen, dass die Substratauflage in einer senkrecht zur Richtung des Laserstrahles liegenden x-y-Ebene bewegbar ist.