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Calculating the line length of a laser

In many imaging applications, line lasers or lasers with different projection patterns are used in order to project them onto the object field and evaluate them in the camera image. Depending on the aperture angle and working distance of the laser, the laser line and other patterns are smaller or larger:

Evaluation of laser line length or pattern size

Working distance of laser in mm:
Opening angle of laser:

Length or size of projected laser line/ pattern:

Attention: Calculated line lengths of under 0.1 mm or beyond 1,000,000 mm are declared invalid.

Further explanations on laser triangulation can be found in chapter "Lasers as illumination".

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