Multiple Axis Measuring Interferometer

Conduct Research

• A Primer on Displacement Measuring Interferometers
  A Displacement Measuring Interferometer (DMI) measures linear and angular displacements with very high accuracy and precision. DMI's are used in a variety of applications which can be broken into two broad categories: • high resolution real time position control systems, such as those used...
• One Sensor, Multiple Targets
  A single linear sensor monitors multiple positions along its axis. A single linear sensor monitors 20 positions. Time to read 20 positions matches that of a single position. Strokes over 5,000 mm, accuracy of +-20 mm, and resolutions of 1 mm. Magnetostrictive Sensors For Bottle Filling...
• Dynamic Phase-Shifting Electronic Speckle Pattern Interferometer
  of measuring meter-class. structures with an acquisition time of 9ns which is six orders of magnitude shorter than the acquisition time for. conventional interferometers. A variety of methods for spatial phase shifting have been developed over the years. The most common are the use. of multiple...
• Measuring Surface Slope Error on Precision Aspheres (.pdf)
  instrumentation to ensure final system performance. This paper will discuss appropriate ways to specify slope errors, and the challenges and limitations of measuring slope errors with commercial interferometers. The optical designer should be aware of how slope errors are measured on Fizeau interferometers...
• Sensors Reference Guide: One Sensor, Multiple Targets
  A single linear sensor monitors multiple positions along its axis. It is often advantageous to have a single sensor monitor more than one feedback parameter. This is now possible in the case of a linear-position sensor that can track as many as 20 moving positions along its axis. The sensor uses...
• Low Coherence Vibration Insensitive Fizeau Interferometer
  of the cavity. Additionally, stray light interference is. substantially reduced due to the source's short coherence. An expression. for the fringe visibility on-axis is derived and compared with that of a. standard Fizeau. Using a 15 mW source, the maximum camera shutter. speed, used when measuring a 4%...
• Case Study: Five-axis CMM inspection lets
  and complex geometries requiring high-volume data collection to validate fit and form with high accuracy. It uses two rotary axes, one in the vertical plane and one in the horizontal, for infinite rotation and positioning. Five-axis software drives the measuring head and synchronizes its motion...
• Laser Trackers
  capability can perform "point and shoot" measurements to monitor the relative position. of large components that are being joined together. It does this by measuring the positions of multiple small. retroreflector targets mounted on the components. As a specific example of tracker use, consider...
• An Introduction to Portable CMMs (.pdf)
  of the circle. To. gather this data using calipers is a time consuming process whereby the user must take multiple. measurements at various points along the circle and then compare them to each other. Optical Comparators and Machine Vision Systems. Optical comparators are a mature technology that use...
• Autombile Industry: Driving Hard for Quality and Cost Reduction - Case Study
  initial resistance from the machine operators and other engineers, as they did not want machine time spent on what they saw as measuring operations. The common feedback was that 'machines are there to cut metal, not measure!'. However, Simon Edwards was determined to make the changes. "It all comes down...

Engineering Web Search: Multiple Axis Measuring Interferometer