Scanning unit of an optical position measuring arrangement...

Details Scanning unit of an optical position measuring arrangement... Scanning unit of an optical position measuring arrangement...

2008-11-06

2011-12-20

Lyons, Michael A (Department: 2877)

Optics: measuring and testing

Position or displacement

Position transverse to viewing axis

C250S231140, C250S23700G

Reexamination Certificate

active

08081321

ABSTRACT:
A scanning unit, by which a scale, which is movable in relation to the scanning unit in a measuring direction, can be optically scanned. The scanning unit including a detector arrangement and a transparent support having a first surface and a second surface, wherein the detector arrangement is arranged on the second surface. The scanning unit further including a transparent cover plate, which is fastened on the first surface of the transparent support and includes a shielding device for shielding the detector arrangement against electromagnetic fields.

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Burgschat, Reiner, “Die neue Dimension in der Weg-und Winkelmeβtechnik,” F&M, vol. 104, No. 10, 1996, pp. 752-756.

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