Method and apparatus for optically reading information from...

Details Method and apparatus for optically reading information from... Method and apparatus for optically reading information from...

2007-12-11

2007-12-11

Lee, Michael G. (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S462330, C235S462240

Reexamination Certificate

active

10953036

ABSTRACT:
An optical information reading apparatus for reading information codes such as a bar code and a two-dimensional code includes, an image-forming lens fixed at a given point and imaging a reflection light from the information code, an optical sensor locating at a position relative to that of the image-forming lens and receiving an image formed by the image-forming lens, a light path bending unit bending the reflection light between the image-forming lens and the optical sensor a plurality of times, a shifter shifting the light path bending unit, a distance measurement unit measuring the distance from the information code to the reading apparatus and a controller controlling the shifter based on the measurement result of the distance measurement unit. The light path length between the image-forming lens and the optical sensor is changed by shifting the light path bending unit using the shifter.

REFERENCES:
patent: 4818847 (1989-04-01), Hara et al.
patent: 5216230 (1993-06-01), Nakazawa
patent: 5912447 (1999-06-01), Bjorner et al.
patent: 7-319990 (1995-12-01), None
First Office Action from Chinese Patent Office issued on May 29, 2006 for the corresponding Chinese patent application No. 200410083464.X (a copy and English translation thereof).

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