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. 05, 1998
Filed:
Aug. 26, 1996
Applicant:
Inventor:
Mark W Gaddis, Albuquerque, NM (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ; A61B / ;
U.S. Cl.
CPC ...
372 38 ; 372109 ; 372 43 ; 606 10 ; 606 11 ;
Abstract
A constant current laser driver circuit that will drive a laser diode in a constant current mode from a 6 to 12 volt battery supply. The laser driver consists of two main sections. The first section converts the 12 volt input to a 2 volt output using ultra-low resistance power mosfets and an inductor. The current sensing amplifier senses the current flowing through the laser and sends a feedback signal to the switching section, which causes it to adjust the output voltage to keep the laser driving current constant.