Glossary of laser cutting terms - F. From Tesko Laser, providing laser cutting and metal fabricating services. Tesko Laser Division - photos
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Glossary of laser cutting terms - F

F

F-Number

The focal length of lens divided by its usable diameter. In the case of a laser the usable diameter is the diameter of the laser beam or a smaller aperture that restricts a laser beam.

Failsafe Interlock

An interlock where the failure of a single mechanical or electrical component of the interlock will cause the system to go into, or remain in, a safe mode.

Feed Rate

The speed at which the cutting head moves.

Focal Point

That distance from the focusing lens where the laser beam has the smallest diameter. The point at which light rays refracted by a lens meet. The focal point on a focused laser beam is the point of highest energy concentration.

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