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OPTICAL SCANNING

IP.com Disclosure Number: IPCOM000024148D
Original Publication Date: 1979-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 156K

Publishing Venue

Xerox Disclosure Journal

Abstract

The depth of the optical system of a copying machine is compacted by using the platen I itself as the return optical path instead of providing a mirrored path elsewhere. A slightly thicker platen than usual is needed. This is a small penality to pay for the resulting reduced swept height below the platen and the removal from this area of an optical volume which could not be otherwise used. An optical

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XEROX DISCLOSURE JOURNAL

OPTICAL SCANNING ProposedEdric Raymond Brooke Classification

U.S. CL 355/8

mt. Cl. G03g 15/28

The depth of the optical system of a copying machine is compacted by using the platen I itself as the return optical path instead of providing a mirrored path elsewhere. A slightly thicker platen than usual is needed. This is a small penality to pay for the resulting reduced swept height below the platen and the removal from this area of an optical volume which could not be otherwise used. An optical

system for scanning onto a CCD array 2 is shown. The system includes a scanning mirror 3, lens 4, and fixed mirrors 5, 6, the platen I having 45°chamfers 7, which are silvered. Instead of the chamfers 7, 45°prisms may be arranged along the edges of the platen.

4 23

Volume 4 Number 5 September/October 1979 661

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