Narrow-bodied, single-and twin-windowed portable laser scanning

Details Narrow-bodied, single-and twin-windowed portable laser scanning Narrow-bodied, single-and twin-windowed portable laser scanning

1988-01-26

1989-07-04

Trafton, David L.

Registers

Coded record sensors

Particular sensor structure

235462, 250566, 372 24, G06K 710

Patent

active

048453501

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.

REFERENCES:
patent: 4387297 (1983-06-01), Swartz et al.
patent: 4523235 (1985-06-01), Rajchman

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