Technical Terms in Laser Metrology

TECHNICAL TERMS

· Interferometer

Interferometer is optical instruments used for measuring flatness and determining the lengths of slip gauges by direct reference to the wavelength of light.

· Machine Vision

Machine vision can be defined as a means of simulating the image recognition and analysis capabilities of the human system with electronic and electromechanical techniques.

· Inspection

It is the ability of an automated vision system to recognize well-defined pattern and if these pattern match these stored in the system makes machine vision ideal for inspection of raw materials, parts, assemblies etc.

· CMM

It is a three dimensional measurements for various components. These machines have precise movement is x,y,z coordinates which can be easily controlled and measured. Each slide in three directions is equipped with a precision linear measurement transducer which gives digital display and senses positive and negative direction.

· Axial Length Measuring Accuracy

It is defined as difference between the reference length of gauges aligned with a machine axis and the corresponding measurement results from the machine.

Laser stands for Light Amplification by Stimulated Emission of Radiation.

Laser instrument is a device to produce powerful, monochromatic, collimated beam of light in which the waves are coherent. Laser development is for production of clear coherent light.