Mitutoyo M Plan Apo SL 50x Objective for MF-U Measuring Microscopes (Brightfield)

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The Mitutoyo 378 Series objectives have the world's longest working distance and an infinity correction optical system. These objectives provide flexible observation at high magnifications and independent correction of chromatic aberration.

  • The long working distance objectives provide excellent clearance between the lens surface and the workpiece surface in focus, making it possible to observe workpieces which are usually hard-to-focus because of awkward projections.
  • The metallurgical plan apochromatic (M Plan Apo) objective provides a flat, chromatic aberration-free image throughout the field of view, making it suitable for any type of microscope.
  • Specially designed objectives also are available with correction for near-infrared radiation, near-ultraviolet radiation, and ultraviolet radiation, or various thicknesses of LCD screen glasses.
  • The mounting screw threads of objectives are designed to conform to JIS B-7141-1988.
  • Super Long (SL) Working Distance
  • Compatible observation method: Bright-field observation, simple polarized observation, differential interference observation
  • Advantage: Plan apochromat lenses free of spherical aberration/chromatic aberration are adopted to obtain images with excellent color reproducibility without blur over the entire field of view.

Product Specifications

Magnification 50x
N.A. 0.42
W.D. 20.5mm
Focal distance 4mm
Resolving power 0.7μm
Focal depth 1.6μm
View field with ø24 eyepiece ø0.48mm
View field with CCD camera 0.10 x 0.13mm
Mass 280g

* View field with CCD camera is a view field when using Mitutoyo Vision Unit


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