High-efficiency symmetrical scanning optics

Details High-efficiency symmetrical scanning optics High-efficiency symmetrical scanning optics

1979-10-29

1981-06-23

Corbin, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358119, G02B 2717

Patent

active

042747031

ABSTRACT:
To provide a relatively compact and linear underfilled multifaceted rotating polygon beam scanning system, there are imaging optics for bringing a input light beam to a tangentially extending line-like focus on successive facets of a rotating polygonal scanning element and for restoring the light beam reflected from the facets to a generally circular focus on an image plane. Each of the facets subtends a sufficient angle about the axis of rotation of the scanner to ensure that the input beam remains fully seated on a single facet while the reflected beam is being scanned through a desired scan angle. Furthermore, improved linearity is achieved because the scanning system is symmetrical in the tangential and sagittal planes at all points between the imaging optics and the polygonal scanning element.

REFERENCES:
patent: 3675016 (1972-07-01), Blaidell et al.
patent: 4054360 (1977-10-01), Osaka et al.
patent: 4054361 (1977-10-01), Noguchi
patent: 4056307 (1977-11-01), Rayces
patent: 4116566 (1978-09-01), Siek

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