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OPTODYNE ANNOUNCES: NEW MCV 500 LASER CALIBRATION SYSTEM ENABLES PITCH AND YAW ANGULAR ERROR MEASUREMENT

18 Errors Measured by an affordable MCV 500 Laser Calibration System.              COMPTON, CA—SEPTEMBER 29, 2003—Optodyne Inc., the leader in laser measurement, calibration and compensation systems, today announced a new and enhanced MCV 500 Laser Calibration System enabling the measurement of pitch and yaw angular errors on machine tools and CMM’s, as well as linear displacement, straightness and squareness errors.   In fact, the economical MCV 500 now measures 18 possible errors, including six angular errors, three linear displacement errors, six straightness errors and three squareness errors.  Existing MCV 500’s can be upgraded with the pitch and yaw angular error measurement feature.

             “With the addition of angular pitch and yaw angular error measurement, the MCV 500 provides customers with an affordable, easily portable and submicron-accuracy laser calibration system for measuring up to 18 degrees of freedom, ?said Charles Wang, Ph.D., president of Optodyne Inc. “The MCV 500 matches and exceeds the accuracy and capability of the most expensive calibration systems available, which proves we are providing machine tool and CMM customers with both the best and economical solutions to their accuracy problems.?

             Using a single beam, the MCV-500 Laser Calibration System measures the same axis twice, each measurement at a different Abbe offset. The two measurements are combined by the software for calculating the angular errors. The accuracy of the measurement is limited by the repeatability of the machine and the Abbe offset. Accuracy is calculated using the formula accuracy = repeatability/Abbe Offset. For example, a machine with repeatability of 0.0001?(2.5 µm) and Abbe offset of 20?(500 mm), the accuracy of the angular measurement is 0.0001?20?= 0.000005 rad (1 arcsec), which is considered satisfactory for most the machine tools.

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