Thomas C Cuff

US Patent:

6519029, Feb 11, 2003

Filed:

Mar 21, 2000

Appl. No.:

09/532100

Inventors:

Thomas M. Hedges - Great Falls VA
Scott Casteel - Fairfax VA
Thomas Cuff - Frederick MD
Timothy Pratt - Blacksburg VA
Rick Slater - Reston VA
Donald Todd - Lottsburg VA

Assignee:

Arc Second, Inc. - Dulles VA

International Classification:

G01B 1126

US Classification:

3561414, 356 408, 3561415

Abstract:

An improved, low-cost optical transmitter and method useful in a three-dimensional measurement system wherein a plurality of operational parameters of said transmitter are calibrated during manufacture/assembly process to generate unique calibration data for each optical transmitter including data defining angles of each transmitters first and second radiant fan beams and the angle between the beams when the transmitter is leveled for operation in the system and wherein a detector/receiver in the system distinguishes between radiant beams from a plurality of individual transmitters operable within a given measurement field as a function of the selectively alterable rotational velocity calibration data for each of said transmitters and wherein said angular calibration data for each transmitter is operationally available to each detector/receiver operable in the system.

US Patent:

6618133, Sep 9, 2003

Filed:

Jul 26, 2002

Appl. No.:

10/205956

Inventors:

Thomas M. Hedges - Great Falls VA
Scott Casteel - Fairfax VA
Thomas Cuff - Frederick MD
Timothy Pratt - Blacksburg VA
Rick Slater - Reston VA
Donald Todd - Lottsburg VA

Assignee:

Arc Second, Inc. - Dulles VA

International Classification:

G01B 1126

US Classification:

3561414, 356 408, 3561415

Abstract:

An improved, low-cost optical transmitter and method useful in a three-dimensional measurement system wherein a plurality of operational parameters of said transmitter are calibrated during manufacture/assembly process to generate unique calibration data for each optical transmitter including data defining angles of each transmitters first and second radiant fan beams and the angle between the beams when the transmitter is leveled for operation in the system and wherein a detector/receiver in the system distinguishes between radiant beams from a plurality of individual transmitters operable within a given measurement field as a function of the selectively alterable rotational velocity calibration data for each of said transmitters and wherein said angular calibration data for each transmitter is operationally available to each detector/receiver operable in the system.