Dual depth of field deflector for bar code scanners

Details Dual depth of field deflector for bar code scanners Dual depth of field deflector for bar code scanners

1989-05-01

1992-12-29

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235462, 235470, 259226, G02B 2608, G06K 710

Patent

active

051754215

ABSTRACT:
An optical bar code scanner uses an improved deflector which deflects a scanning beam along different path lengths within the scanner. The beam is focused at different focal points outside a scanning window of said scanner. The different focal points provide a continuous depth of field with significant range. In one design the rotating deflector is configured as an asymmetrical polygon having a plurality of flat mirrors mounted on a support structure.

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