The stereo microscope can be used for a variety of different purposes like evaluation of surfaces or inspection of scratches on metal.

The history of the stereo microscope

The basic idea behind a stereoscopic microscope is simple. It was formulated in 1896 by the biologist Horatio S. Greenough, who wanted to see small biologic samples magnified, but with the same quality as with unaided eyes. In other words: in three dimensions and with all the depth information he needed to understand the irregular shape of his specimen intuitively.

He reckoned, one could build a microscope with two separate beam paths facing the object from two directions - exactly as human eyes do when observing a small object at a distance of 250 mm

The brain would fuse the two images together and produce a spatial image of the object with a high degree of depth perception. This thinking led to the first factory-produced stereo microscope.

ZEISS Stemi 508 stereo microscope

  • ZEISS Stemi 508's apochromatic zoom optics* and efficient stray light suppression give you a crisp three-dimensional image, distortion-free, without color fringes.
  • Visualize objects in fields of view up to 122 mm.The large 8:1 zoom lets you observe even minute structures in high contrast.
  • Use interchangeable apochromatic front optics and eyepieces to reach any magnification between 2× and 250×. Double your resolution or enjoy large working distances up to 287 mm without compromising optical quality.
  • The CL4500 LED fiber optic cold light source delivers daylight quality, especially optimal for color critical applications. To receive special illumination contrasts choose ringlights for shadow-free bright- or darkfield illumination, single and dual spots for distinct shadow effects, line light for grazing light, diffuse illuminations for avoiding hotspots, or use polarization equipment to eliminate reflections.