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Scanning a Focused Light Beam Using Two Synchronized Mirrors

IP.com Disclosure Number: IPCOM000082868D
Original Publication Date: 1975-Feb-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Dewey, AG: AUTHOR

Abstract

Apparatus is shown for scanning a focused spot over a wide flat field.

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Scanning a Focused Light Beam Using Two Synchronized Mirrors

Apparatus is shown for scanning a focused spot over a wide flat field.

The apparatus utilizes two synchronized mirrors 10 and 12 positioned to intercept an input beam and scan the beam over a field 16. A lens 14 is positioned in the beam path to focus the beam across field 16.

The scanning motion is provided by oscillating or continuously rotating mirrors 10 and 12 in a synchronized manner, so that mirror 10 is rotated at a speed twice the speed of mirror 12. The geometry is such that the axis of rotation of mirror 10 should be equidistant from the center of lens 14 and the axis of rotation of mirror 12. Thus, this apparatus is suitable for use in a laser recording system, in which a focused spot is scanned across a recording medium.

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