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Browse Prior Art Database

Diamond Flycut Multifaceted Mirror

IP.com Disclosure Number: IPCOM000046360D
Original Publication Date: 1983-Jul-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Allen, SM: AUTHOR [+2]

Abstract

This is a manufacturing technique for machining optical surfaces on a multifaceted mirror by offsetting the flycutter from the center of the facet to angle any resulting tool marks. In that manner, a laser beam reflected from a facet is reflected across multiple tool marks, thus eliminating the effect of the high local slope error in a single mark.

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Diamond Flycut Multifaceted Mirror

This is a manufacturing technique for machining optical surfaces on a multifaceted mirror by offsetting the flycutter from the center of the facet to angle any resulting tool marks. In that manner, a laser beam reflected from a facet is reflected across multiple tool marks, thus eliminating the effect of the high local slope error in a single mark.

Fig. 1 shows a multifaceted mirror 10 for rotation in direction A. A laser gun 11 produces beam 12 which reflects from each of the facets 13, 13', 13'', etc., as the mirror rotates. This structure is useful in laser printers, such as the IBM 6670 Information Distributor.

Fig. 2 illustrates the unpredictable scattering of a laser beam from facet 13 due to tool marks 14 which are oriented along the length of the facet, while Fig. 3 shows a facet where tool marks l5 are at an angle, thus keeping a larger portion of the reflected laser beam directed properly by reflecting the beam across several tool marks.

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