Planar arrangement for two-dimensional optical scanning
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United States of America Patent
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Jan 14, 1997
Grant Date -
N/A
app pub date -
May 5, 1995
filing date -
May 5, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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Cited Art Landscape
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