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Knowledge
Mechanical Tube Length

In order for a microscope to come into focus for various combinations of objective and eyepiece, distance L' between the objective mounting surface and the eyepiece opening must stay constant. Such distance L' is known as a mechanical tube length, assuming 160mm as the reference.

Parfocal Length/Mechanical Tube Length
Parfocal Length/Mechanical Tube Length


Related Link

> Top of the Optical Metrology

> Top of Industrial Microscopes

> UIS2 Objective Lens Lineup

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