Mistake-Proofing Resource Center

Laser Displacement Sensors

Laser displacement sensors focus a semiconductor laser beam on a target and use the reflectance of the beam off the target to determine the presence of a target and distance to it.

Example of a laser displacement sensor


  •  Measuring distance.
  • Detection of presence or absence of a feature.
  • Confirmation of part or object passage.
  • Positioning of work piece.


  • Non-contact.
  • Works in harsh environments.
  • Some devices can achieve measurement precision down to .004 mils (0.1µm).
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