05640001 is referenced by 75 patents and cites 6 patents.

A hand-held bar code reader includes one or more photosensor arrays which provide a plurality of image sensor portions arranged for receiving images of a bar code through a plurality of selectively usable paths of 5 different focal lengths which are defined by a passive optical system. A distance measuring system controls the sensor portion which is used to control the focal length. In one embodiment, the bar code image is projected to a plurality of receiving mirror surfaces, thence to a plurality of additional mirror surfaces and thence through lens barrels to mirrors which project the 10 images to photosensor arrays. In another, the bar code image is projected to a plurality of receiving mirror surfaces, thence to an additional mirror surface, and thence through a single lens barrel to a mirror which projects the images to a photosensor array.

Title
Hand-held instant bar code reader having automatic focus control for operation over a range of distances
Application Number
894689
Publication Number
5640001
Application Date
March 17, 1994
Publication Date
June 17, 1997
Inventor
Dennis A Durbin
Cedar Rapids
IA, US
Arvin D Danielson
Solon
IA, US
Agent
Sean Patrick Suiter & Associates PC Suiter
Assignee
Norand Technology Corporation
DE, US
IPC
G06K 7/10
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