Optical beam scanning apparatus

Details Optical beam scanning apparatus Optical beam scanning apparatus

1995-09-19

1996-06-18

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359305, 359196, 347255, 347258, 347259, G02B 2608, G02F 133

Patent

active

055284124

ABSTRACT:
An optical beam scanning apparatus which includes: an optical modulator which emits an optical beam in a direction corresponding to the frequency of an inputted signal; scanning device for scanning the optical beam; a scanning lens; a storage device which stores data for correcting the displacement of the optical beam passing through the scanning lens caused by an aberration of the scanning lens for each scanning position of the optical beam; and a device which, based on the data stored in the storage device, alters the frequency of the signal to be inputted to the optical modulator for each scanning position of the optical beam so as to correct the displacement of the optical beam caused by the aberration of the scanning lens.

REFERENCES:
patent: 4000493 (1976-12-01), Spaulding et al.
patent: 4827125 (1989-02-01), Goldstein
patent: 4862196 (1989-08-01), Umeda et al.
patent: 5111332 (1992-05-01), Kuwabara et al.
patent: 5132834 (1992-07-01), Shinada

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