Scanning device for scanning a target, scanning motor for the de

Details Scanning device for scanning a target, scanning motor for the de Scanning device for scanning a target, scanning motor for the de

1991-08-16

1995-06-06

Hajec, Donald

Registers

Coded record sensors

Particular sensor structure

235462, 310 36, 310 20, 359213, G06K 710

Patent

active

054224713

ABSTRACT:
A scanning device for projecting a light beam against a target having information contained thereon which is to be scanned by the light beam; and in particular relates to a compact laser scanning device, such as a bar code projecting a laser beam, and which device incorporates a drive component such as a scanning motor for oscillating a scanning element or mirror at a high rate of speed within a specified angular range so as to cause the light or laser beam which impinges against the information on the target to be rapidly swept across the information in a scanning sequence. In particular, the structure is directed to improving the linearity of the oscillatory or "dithering" motion imparted by the scanning motor to the scanning element or mirror. Also contemplated is a novel method of utilizing the "dithering" or oscillating motion of the scanning motor for effectuating an improvement in the quality of the scan by the scanning device.

REFERENCES:
patent: 3644763 (1972-02-01), Skrobisch
patent: 4502752 (1985-03-01), Montagu
patent: 4958894 (1990-09-01), Khowles
patent: 5015831 (1991-05-01), Eastman et al.
patent: 5059779 (1991-10-01), Krichever et al.
patent: 5099110 (1992-03-01), Shepard et al.
patent: 5168149 (1992-12-01), Dvorkis et al.
patent: 5198651 (1993-03-01), Barkan et al.

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