Patents by Inventor Raymond H. Masonson

Raymond H. Masonson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Laser thermal control using thermoelectric cooler
    Patent number: 5602860
    Abstract: A system uses a parallel switch/thermoelectric cooler circuit between a voltage source and a subsystem having a laser diode in thermal contact with the thermoelectric cooler. The switch opens when the temperature is above a switch temperature such that current is supplied to the thermoelectric cooler in order to cool the laser. The thermoelectric cooler uses energy which would otherwise be wasted in a voltage regulator. The subsystem includes an optical transmitter using the laser to send signals. An alternate arrangement uses a pulse width modulator to provide proportional control for more precise regulation of the laser temperature.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: February 11, 1997
    Assignee: Optelecom, Inc.
    Inventor: Raymond H. Masonson