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Prism Deflector for Laser Machining

IP.com Disclosure Number: IPCOM000095303D
Original Publication Date: 1965-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Kremen, SH: AUTHOR

Abstract

The laser arrangement provides a focused laser beam for drilling holes. Such is effected without moving the workpiece and without detrimental focusing of the high energy beam in the digital light deflector.

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Prism Deflector for Laser Machining

The laser arrangement provides a focused laser beam for drilling holes. Such is effected without moving the workpiece and without detrimental focusing of the high energy beam in the digital light deflector.

High energy laser 11 has its beam directed to beam or light deflector 13. Deflector 13 is described in the January 1964 IBM Journal (pages 64-67) and can direct a collimated beam to many X-Y locations. For the purpose of illustration, a four position deflector, i. e., two-stage, is assumed.

In the top view, the laser beam is shown deflected in the first stage to two horizontal paths. Each beam impinges on an inclined facet or face of X prism 14 and is directed through Y prism 15 to focusing lens 17. This focuses the collimated beam to drill a hole in workpiece 19 in one of two locations. In the front view, a similar operation results with cooperation between the Y-stage of deflector 13 and the Y prism 15 to give two more positions for a total of four positions. By using two-stage X and a two-stage Y digital light deflectors in conjunction with X and Y prisms of the type 21 shown at the right, each having four inclined facets, a total of sixteen positions is possible with each deflected beam impinging wholly on a facet of a prism.

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