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. 16, 2000
Filed:
Mar. 21, 1997
Miklos Stern, Flushing, NY (US);
Joseph Katz, Stony Brook, NY (US);
Joseph Campanelli, Centereach, NY (US);
Paul Dvorkis, Stony Brook, NY (US);
Boris Metlitsky, Stony Brook, NY (US);
Varl Gurevich, Bohemia, NY (US);
Mark Krichever, Hauppauge, NY (US);
Daniel R McGlynn, Brooklyn, NY (US);
Symbol Technologies, Inc., Holtsville, NY (US);
Abstract
A scanning device incorporates a vertical cavity surface emitting laser (VCSEL). The laser diode may be mounted directly on an Si substrate which is adapted for movement to produce a scan pattern. A collimating lens may be directly mounted on the emitting surface of the laser. A plurality of lasers may be mounted on the substrate and operated in sequence without movement of the substrate to produce the effect of a scan. The scanning device emits visible or invisible light towards a target such as a bar code and a detector (mounted on the same or an adjacent substrate) senses the light reflected by the target to produce data which is decoded for further processing. A VCSEL uses low current and emits light from a relatively large area so that a relatively large amount of light is emitted for relatively small heat generation.