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:
Aug. 10, 2010
Filed:
Oct. 30, 2007
C. Harry Knowles, Hanover, NH (US);
Xiaoxun Zhu, Marlton, NJ (US);
Timothy Good, Clementon, NJ (US);
Tao Xian, Bensalem, PA (US);
Anatoly Kotlarsky, Churchville, PA (US);
Michael Veksland, Marlton, NJ (US);
Mark Hernandez, Bridgeton, NJ (US);
John Gardner, Mullica Hill, NJ (US);
Steven Essinger, Philadelphia, PA (US);
Patrick Giordano, Blackwood, NJ (US);
Sean Kearney, Hamilton, NJ (US);
Mark Schmidt, Williamstown, NJ (US);
John A. Furlong, Woodbury, NJ (US);
Nicholas Ciarlante, Woolwich Township, NJ (US);
Yong Liu, Suzhou, CN;
Jie Ren, Suzhou, CN;
Xi Tao, Suzhou, CN;
Jibin Liu, Suzhou, CN;
Ming Zhuo, Suzhou, CN;
Duane Ellis, Medford, NJ (US);
C. Harry Knowles, Hanover, NH (US);
Xiaoxun Zhu, Marlton, NJ (US);
Timothy Good, Clementon, NJ (US);
Tao Xian, Bensalem, PA (US);
Anatoly Kotlarsky, Churchville, PA (US);
Michael Veksland, Marlton, NJ (US);
Mark Hernandez, Bridgeton, NJ (US);
John Gardner, Mullica Hill, NJ (US);
Steven Essinger, Philadelphia, PA (US);
Patrick Giordano, Blackwood, NJ (US);
Sean Kearney, Hamilton, NJ (US);
Mark Schmidt, Williamstown, NJ (US);
John A. Furlong, Woodbury, NJ (US);
Nicholas Ciarlante, Woolwich Township, NJ (US);
Yong Liu, Suzhou, CN;
Jie Ren, Suzhou, CN;
Xi Tao, Suzhou, CN;
JiBin Liu, Suzhou, CN;
Ming Zhuo, Suzhou, CN;
Duane Ellis, Medford, NJ (US);
Metrologic Instruments, Inc., Blackwood, NJ (US);
Abstract
A laser beam despeckling device including a laser diode for producing a laser beam having a central characteristic wavelength. The device includes diode current drive circuitry for producing a diode drive current to drive said laser diode and produce said laser beam. High frequency modulation (HFM) circuitry modulates the diode drive current at a sufficiently high frequency to cause said laser diode to produce spectral side-band components about the central characteristic wavelength, and reducing the coherence as well as coherence length of the laser beam. An optical beam multiplexing (OMUX) module is provided for receiving the laser beam as input beam, a generating as output, a plurality of laser beam components that are recombined to produce a composite laser beam having substantially reduced coherence for use in illumination applications where a substantial reduction in speckle pattern noise is achieved.