Universal Laser Systems awarded patent for HPDFO

June 20--Universal Laser Systems Inc. has been awarded U.S. Patent No. 7,060,934 for its High Power Density Focusing Optics (HPDFO). HPDFO effectively increases the power density of a CO2 laser beam to produce the effects of a much higher-powered laser.

HPDFO consists of two parts: the beam expander assembly and the high-resolution optics assembly. HPDFO first expands the diameter of the laser beam to produce a smaller, more tightly focused "spot" than a standard laser beam delivery system, then concentrates that expanded energy at the focus point to create a much higher power density. The effective spot size produced by HPDFO can be as small as one-quarter the size of the spot produced by a standard 2.0-inch focusing lens.

Reportedly, HPDFO makes it possible to directly mark some uncoated metals, such as stainless steel, cold rolled steel, iron, titanium, and some types of chrome without the assistance of metal marking chemical compounds or coatings. Depending on the application material, HPDFO further makes it possible to produce graphics with up to 1,000 dpi of optical resolution and vector cut lines eith 0.010 inch kerf thickness.

HPDFO is compatible with the company's VersaLaser, Professional and XL Series laser systems, and retrofit kits are available for some older models.

For more information, visit www.ulsinc.com.

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