Planar arrangement for two-dimensional optical scanning

Details Planar arrangement for two-dimensional optical scanning Planar arrangement for two-dimensional optical scanning

1995-05-05

1997-01-14

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235467, G06K 710

Patent

active

055942326

ABSTRACT:
An optical scanner for reading indicia having part of differing light reflectivity, including an optical element and a mounting bracket. The optical element is mounted for oscillation with respect to the mounting bracket by first and second wires forming a first spring having a relatively high modulus of elasticity, the optical element having a relatively low inertia when oscillating by elastic movement of the first spring. A stationary frame is provided with the mounting bracket mounted for oscillation with respect to the frame by third and fourth wires having a relatively high modulus of elasticity; the optical element, mounting bracket and first and second wires taken together having a relatively high inertia when oscillating by elastic movement of the third and fourth wires. The optical element is oscillated with respect to the mounting bracket at a relatively high frequency, and the mounting bracket oscillated with respect to the frame at a relatively low frequency by an electromagnetic drive.

REFERENCES:
patent: 3642344 (1972-02-01), Corker
patent: 3666974 (1972-05-01), Dostal
patent: 4302709 (1981-11-01), Tichtinsky
patent: 4502752 (1985-03-01), Montagu
patent: 4919500 (1990-04-01), Paulsen
patent: 5168149 (1992-12-01), Dvorkis et al.
patent: 5280165 (1994-01-01), Dvorkis et al.
patent: 5373148 (1994-12-01), Dvorkis et al.

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