The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2017
Filed:
Jun. 02, 2015
Symbol Technologies, Llc, Lincolnshire, IL (US);
Caihua Chen, Albany, NY (US);
Chinh Tan, Setauket, NY (US);
Symbol Technologies, LLC, Holtsville, NY (US);
Abstract
An imaging lens assembly for an imaging reader includes a base lens having an optical power, a target side facing a target, and an imager side facing an imager. An aperture stop directly contacts the imager side and has an aperture through which return light from the target passes. The aperture is magnified in apparent size by the optical power of the base lens to form a magnified entrance pupil as seen through the target side. A variable focus liquid lens focuses the return light captured by the magnified entrance pupil over an extended range of working distances onto the imager. The magnified entrance pupil captures more of the return light from the target to pass through the base lens and the liquid lens to the imager, and also allows the target to be illuminated with a lower brightness to conserve electrical power.