ROBERT N CARLSON
Vehicle Board in Downingtown, PA
License number
Pennsylvania MV056206L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Downingtown, PA 19335
Professional information
Laser Communication System And Methods
US Patent:
6285476, Sep 4, 2001
Filed:
Jan 25, 1999
Appl. No.:
9/235767
Inventors:
Robert T. Carlson - Downingtown PA
Jesse W. Booker - Exton PA
Alvin Cabato - Plymount Meeting PA
David Driscoll - Winchester MA
Scott Hamilton - Downingtown PA
Jesse W. Booker - Exton PA
Alvin Cabato - Plymount Meeting PA
David Driscoll - Winchester MA
Scott Hamilton - Downingtown PA
Assignee:
LSA, Inc. - Arlington VA
International Classification:
H04B 1024
US Classification:
359114
Abstract:
A laser communication system for full duplex wideband data transmission includes first and second terminals having dichroic wavelength-multiplexed optical systems wherein transmitted and received light are multiplexed along a path through the same aperture. The optical systems each preferably comprise a cassegrain receiver having primary and secondary mirrors for directing both transmitted and received laser light. Modulated laser light is generated by a high-power laser diode which is actively cooled by a thermoelectric cooler. A window in the housing, through which the modulated laser light travels, includes a transparent resistive coating to which electrical current is applied to control the temperature of the window. The aspheric primary mirror has a highly reflective surface, preferably a single-point diamond-turned mirror surface, formed on an aluminum substrate as a single piece.