Resonetics, Inc.

Kenneth Todd McDaniel

David L Wall

Pascal Miller

David S Holbrook

Rong Gu

A laser machining system for machining a work-piece includes a laser scanning head, external optical subsystems, and an image acquisition device. The external optical subsystems correspond to optical channels that include a first optical channel and a second optical channel. The laser scanning head controls an optical path so that a laser beam is directed and focused on the work-piece through the first optical channel and the second optical channel at different times. The first optical channel and the second optical channel correspond to respective specific portions of the work-piece to be machined by the laser beam. The image acquisition device is positioned to view the work-piece through the optical path. The image acquisition device acquires via the first optical channel one or more images of the work-piece to determine a displacement of the work-piece with reference to a best optical focus position of the second optical channel.

Laser machining system and method for machining three-dimensional objects from a plurality of directions

Embodiments of the present disclosure are directed to systems (), devices and methods for machining a work-piece from a plurality of directions using a single laser beam and galvanometer scan head (). In some embodiments, such a system includes, for example, a scanning galvanometer head ('scan-head') (), having one or more mirrors () for directing a laser beam in at least one plane. Preferably, in some embodiments, the scan-head includes two mirrors for deflecting the laser beam in the at least one plane (e.g., an X-Y plane). A plurality of second mirrors (A,B,C) is arranged after the scan-head () to direct the laser onto a predetermined portion of the exterior of the object to be machined. In some preferred embodiments, there are three such second mirrors (A,B,C) each to direct the laser over a 120 degree area of the object. In some embodiments, a single, large-field focusing lens is also included to focus the laser output from the scan-head, while in other embodiments, each second mirror includes a corresponding focusing lens (A,B,C). One or more of the beams effecting machining of the work-piece may be unfolded.

Embodiments of the present invention are directed to methods and systems for micromachining a conical surface. In one embodiment, such a system may include a rotating platform for receiving a long line of laser illumination, a mask having a predetermined pattern comprising a sector of a planar ring, the mask being positioned on the rotating platform, a workpiece stage having a rotational axis for rotating a removably-affixed workpiece comprising a conical surface, wherein the sector comprises the planar image of the conical surface, an excimer laser for producing a laser beam, a homogenizer for homogenizing the laser beam in at least a single direction, at least one condenser lens, a turning mirror and at least one projection lens.

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Merrimack, NH, United States of America

Kenneth Todd McDaniel