Precision, non-contact, measurement and control solutions

LaserLinc, Inc.: precision, non-contact, measurement and control solutions for wire, cable, hose, tube, pipe, and other products in medical, automotive, aerospace, energy, metrology and other industries

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Scanning Laser Micrometer Operating Principle


If you have existing scanning laser micrometers systems that are not providing you the monitoring and control functions you want or need, we have a solution that uses your existing micrometers: the TLAser400™ Interface Card and Total Vu™ software.

A scanning laser micrometer uses a rotating optical element to reflect or refract a laser beam through a measurement area and across the path of an object to measure. The part obstructs the laser light, creating a shadow that persists for a time proportional to the size of the part.

Optics in the receiver collect the unobstructed laser light and focus it on a photocell. The output of the photocell is analyzed by electronics to detect the precise time at which the laser crosses each part edge. Software converts timing data into meaningful measurements.

All scanning laser micrometers operate by the same fundamental principle, whether they use a rotating mirror, prism, hologram, tuning fork, or some other mechanism to scan the laser beam through the measurement field. Scanning laser micrometers have used a variety of light sources: laser diodes, helium-neon (HeNe) laser tubes, and LEDs.

The electrical interface—power, signal, and status lines—to a scanning laser micrometer also varies amongst this class of devices. However, since they all operate on the same fundamental principle, the electrical signals encode the same fundamental information.

Laser Demo

Using your mouse, move one or more objects (black circles or squares) into the laser stream. Our simulated laser measurement system will indicate the measurements between state changes of the receiver.