Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1994-12-02
1996-01-23
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
359206, H01J 314
Patent
active
054866944
ABSTRACT:
A wobble correction and focusing optical element for a raster optical scanner combines a toric lens, which provides most of the optical power for focusing the light beam to a scan line, with a binary diffractive optical surface, which corrects the field curvature of the toric lens and which also linearizes the scan. The diffractive surface will have a multi-level structure (binary diffractive optical surface) which possesses a diffractive phase function that will flatten the field curvature of the toric lens.
REFERENCES:
patent: 4606601 (1986-08-01), Starkweather
patent: 4895790 (1990-01-01), Swanson et al.
patent: 5073007 (1991-12-01), Kedmi et al.
patent: 5208701 (1993-05-01), Maeda
patent: 5212381 (1993-05-01), Appel et al.
patent: 5227915 (1993-07-01), Grossinger et al.
patent: 5237451 (1993-07-01), Saxe
W. Veldkamp & T. McHugh, "Binary Optics", Scientific American, vol. 266, No. 5, May 1992, pp. 92-97.
G. J. Swanson, "Binary Optics Technology: The Theory and Design of Multi-Level Diffractive Optical Elements", Lincoln Laboratory, Massachusetts Institute of Technology, Technical Report 854, 14 Aug. 1989, pp. 1-47.
Le Que T.
Propp William
Westin Edward P.
Xerox Corporation
LandOfFree
Wobble correction and focusing optical element with refractive t does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wobble correction and focusing optical element with refractive t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wobble correction and focusing optical element with refractive t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1506354