Polygonal mirror with tightened reflecting foil
AssigneeOce-Nederland B.V.
InventorsBernardus A. Mulder, Bontko Witteveen
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Abstract
A polygonal mirror is provided which presents a plurality of mirror surfaces arranged about an axis of rotation with all the mirror surfaces at the same inclination relative to that axis. The mirror comprises a reflecting foil tightened over a plurality of supporting elements arranged about the axis of rotation. Equal angles between the mirror surfaces are obtained by employing cylinders as the supporting elements. The cylinders all have the same outside diameter, and are placed together with each touching two neighboring cylinders and each in contact with a central cylinder the axis of which coincides with the axis of rotation.
Claims21
A polygonal mirror, comprising a plurality of mirror surfaces arranged round an axis of rotation, each of which surfaces is inclined equally to the axis of rotation, characterized in that the mirror comprises a reflecting foil tightened over a plurality of supporting elements arranged round the axis of rotation.
Dependencies are inferred from the claim text.