- Technical Distance Measurement
- Signal Conditioning of Sin / Cos
- Fringe Detection, Resolution, Limits
- Lissajous Curves
The basic Michelson interferometer (CA-1300) is upgraded to a technical interferometer. Length measurement with this homodyne laser interferometer is based on electronic fringe counting. The quadrature detection technique is used to determine the direction and step numbers of movement of one interferometer mirror. A comparator digitalizes the measured signals. An event counter registers the fringe numbers which are converted into real length.
Order No. 4900-9-1301
- Industrial Application
- Calibration of a Translation Stage
- Calibration Record
- Environmental Conditions
The Technical Interferometer (CA-1300 + CA-1301) is extended by a motorized translation stage and a controller to demonstrate the calibration of an unknown length. Via a PC a travel range is set, encoded by the controller and forwarded to the translation stage. The value measured by the interferometer is compared to the travelling distance and hence to the set value. Corrected for environmental conditions the interferometer value builds the calibration standard.
Order No. 4900-9-1302