Fiber optic barcode readers using purely mechanical scanner osci

Details Fiber optic barcode readers using purely mechanical scanner osci Fiber optic barcode readers using purely mechanical scanner osci

1993-06-21

1995-06-06

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

235472, 235473, 25022726, G06K 710

Patent

active

054224691

ABSTRACT:
The laser diode of an optical scanning system is located in a separate unit and light therefrom carried to a remote scan head via an optical fiber. This reduces the size and weight of the scan head and reduces the temperature sensitivity of the scan head. The scan head may include an optical sensor for detecting light reflected from scanned symbols. Alternatively, the separate unit may house the sensor, and the same fiber or an additional fiber will collect the reflected light and transmit that light back to the sensor. A portion of the optical fiber is attached to the optical scan unit such that the first end is free to vibrate within the optical scan unit in response to a mechanical force applied to the optical scan unit by a user, for example by shaking or striking the scan unit. In an alternative embodiment, a torsion spring arrangement supports the emitting end of the fiber, and a user activates a mechanical trigger or the like to initiate vibration of the spring and corresponding oscillation of the emitting end of the fiber.

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