Registers – Coded record sensors – Particular sensor structure
Patent
1997-10-31
2000-08-22
Le, Thien M.
Registers
Coded record sensors
Particular sensor structure
23546241, G06K 710
Patent
active
061058696
ABSTRACT:
A device and method for uniformly illuminating bar codes and two dimensional symbologies. An illumination source is mounted within the device to flood an area congruent with the field of view of the imaging optics with light to be reflected off of a code symbol. The imaging optics collects the reflected illumination received back through the window and images the same on a detector focal plane. An array of solid state light-emitting diodes are disposed adjacent to the imaging optics and a diffuser is placed between the emitters and the device window for illumination source. The emitters and diffusers are spatially arranged so as to cause homogenous distribution of light energy beyond the window and congruent with the field of view of the imaging optics.
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Fisher Donald S.
Scharf Bruce R.
Cyr Daniel St.
Le Thien M.
Microscan Systems Incorporated
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