ARRANGEMENT FOR AND METHOD OF PROTECTING AN IMAGING LENS ASSEMBLY FROM DEGRADATION IN OPTICAL PERFORMANCE
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United States of America Patent
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Issued Date -
Jan 12, 2017
app pub date -
Jul 8, 2015
filing date -
Jul 8, 2015
priority date (Note) -
Abandoned
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Abstract
An imaging lens assembly, especially for an imaging reader, includes a plurality of lenses mounted in a lens barrel along an optical axis. A plurality of deflectable ribs is arranged around the optical axis at one end region of the barrel. Each deflectable rib extends axially at least partly over one of the lenses. A strain relief recess is formed in the one end region of the barrel and creates a radial spacing between the deflectable ribs and the one lens. The imaging lens assembly is inserted into a passage bounded by an inner chassis wall of a chassis. The chassis wall exerts radial forces on the deflectable ribs during insertion of the imaging lens assembly to deflect the deflectable ribs relative to the barrel end region into the recess without exerting radial pressure on the one lens and degrading optical performance of the imaging lens assembly.
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