Orbital International Inc.



MU40B Advanced Infinity-Corrected Binocular Microscope 40X-1000X 5W LED Kohler Illumination

SKU: VMU0004-B

Quick Review:

  • Siedentopf binocular head
  • High Contrast (HC) infinity corrected plan objectives
  • Equipped with 5w LED lamp
  • Standard Köhler illumination 
  • Ergonomically designed metal frame for stability and durability
  • Brightfield, darkfield, phase contrast, and polarization (optional)



A new generation of microscopes feature High Contrast (HC) infinity corrected plan optics. Equipped with 5w LED lamp,  field diaphragm,  Abbe condensers and other optical components,  the standard Köhler illumination system provides uniformly bright and free-from-glare specimen illumination, which optimizes a high image quality with brighter and sharper resolutions for photomicrography. The compact body is designed for flexibility which can perform various applications such as brightfield, darkfield, phase contrast, and polarization.

Packing List:

  • One set of binocular microscope
  • One bottle of immersion oil
  • One dust cover
  • User Manual
  • 5 year limited warranty

Shipping Information:

  • 21'' x 13'' x 16''
  • 21lbs



High Contrast Infinity Plan Objective

Item No.



4X, 10X, 20X, 40XR, 100XR


5w LED



Viewing Head

Siedentopf binocular head which will not change the length in the eyepiece tubes when interpupillary distance adjustments are made

30° inclined and 360° rotatable, fully up or down swiveled eyepiece tubes to adjust the viewing height to meet individual requirements

Interpupillary adjustment of 48mm-75mm


Wide field (WF)10x/22mm

High eyepoint, with eyeguard

Both eyepieces are diopter adjustable, which allows the image and reticule to be brought into focus at the same time.


Optional reticule eyepiece for measurement purposes; choice of 0.1mm/1cm grid, 0.1mm/1cm cross or plain cross hair available (not included)


Revolving reversed quintuple objective nosepiece accepts five objectives which are color-coded, parcentered and parfocaled.

The nosepiece runs on ball bearings and has internal click stops so that the image remains centered after each change in magnification.


Infinity corrected, high contrast (HC) Plan Achromatic DIN 4X/0.10 ∞/0.17

Infinity corrected, high contrast (HC) Plan Achromatic DIN 10X/0.25 ∞/0.17

Infinity corrected, high contrast (HC) Plan Achromatic DIN 20X/0.40 ∞/0.17

Infinity corrected, high contrast (HC) Plan Achromatic DIN 40XR/0.65 ∞/0.17

Infinity corrected, high contrast (HC) Plan Achromatic DIN 100XR/1.25 oil ∞/0.17

40XR and 100XR objectives are retractable which have resilient mounts for specimen protection

Focusing System

Low position coaxial coarse and fine focus knobs

37.7mm per coarse rotation

0.1mm per fine rotation, fine focus graduation of 1um

Focusing range 16mm

Tension adjustment eliminates focus drift



216mmx150mm built-in double layer mechanical stage

Smooth X/Y calibrated movement with cross travel range 7.5cm x 5.5cm


Non-extending rack

Graphite surface, rounded edges


Built-in Kohler illumination with field diaphragm, provides uniformly bright and free-from-glare specimen illumination

N.A. 1.25 Abbe condensers which height is controlled by a rack and pinion gear system that allows the condenser focus to be adjusted for proper illumination of the specimen

Adjustable aperture  iris diaphragm incorporated into the condenser, which is important in securing correct illumination, contrast, and depth of field;  a graduated scale indicates the approximate adjustment (size) of the aperture diaphragm corresponding to respective objectives.

5w LED for optimum illumination and contrast

With light intensity control


Ergonomically designed metal frame for stability and durability

Carrying handle integrated in the back of the stand for easy carrying

Arm and base made of one piece construction

Antifungal treatment prevents fungal growth

Cord holder for convenient storage


Optional Accessory

Available (not included)

Dark field kit

Phase contrast kit

Polarizing kit



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