Narrow-bodied, single-and twin-windowed portable laser scanning head for reading bar code symbols
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United States of America Patent
Stats
-
Oct 11, 1983
Grant Date -
N/A
app pub date -
Jan 25, 1982
filing date -
Jan 25, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A narrow-bodied, single-and twin-windowed, hand-held, laser scanning head for reading bar code symbols includes at least one window mounted at the rear region of the head, and through which either the incident beam going to the symbol and/or the reflected beam returning from the symbol, passes unobstructedly and exteriorly of, and past, the front and intermediate body regions of the head. A field-replaceable laser tube arrangement, a laser tube and method of making the same, an arrangement for and method of controlling a scanning system, optical passive elements for increasing the depth of field, a trigger protective device, and a one-piece support bench and method of fabricating the same by mass-production techniques are also disclosed.
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