Scanning device

Details Scanning device Scanning device

1994-06-07

1996-06-11

Dzierzynski, Paul M.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359211, 359 17, 235467, G02B 2608, G02B 532, G02B 2610, G06K 710

Patent

active

055261671

ABSTRACT:
Scanning device for optically scanning symbol codes, such as bar codes, comprising a laser source for producing a scanning beam, a detector for detecting light backscattered by the scanned symbol codes, first and second rotatable deflection elements for both transmitting and deflecting the scanning beam so as to generate a scanning pattern, and drive devices for rotating the first and second deflection elements around a first and second axis of rotation, respectively, in which scanning device the scanning beam when impinging upon the first deflection element does not coincide with at least one of both axes of rotation.

REFERENCES:
patent: 4118109 (1978-10-01), Crawford et al.
patent: 4348108 (1982-09-01), Shindow
patent: 4822974 (1989-04-01), Leighton
patent: 5018803 (1991-05-01), Hecker et al.
patent: 5274489 (1993-12-01), Smith et al.
"Thermal Imaging Systems", by J. M. Lloyd, 1979, New York, pp. 316-320.

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