Optics for passive facet tracking

Details Optics for passive facet tracking Optics for passive facet tracking

1994-12-21

1996-01-23

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359203, 359217, 359218, 347259, 347261, G02B 2608

Patent

active

054869455

ABSTRACT:
A passive facet tracking system using passive optical components to induce a beam of light to track a facet of a rotating mirror polygon. The properties of the passive components are such that they collimate a light beam in a tangential plane in a complete trip through the passive optical components and the passive optical components focus the beam in the sagittal plane so that the beam is collimated in the tangential plane and focussed in the sagittal plane when it arrives at the center of the facet.

REFERENCES:
patent: 3973826 (1976-08-01), Lobb
patent: 5343326 (1994-08-01), Ossman et al.

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