SIGETA WF 16x / 13 mm - achromatic 16-fold eyepiece in a metal housing. The diameter of the eyepiece barrel is 23.2 mm, which is the standard for most student and professional biological microscopes. The calculated eyepiece number for this model is 208: this value is located in the central part of the WideField interval (180..225), so the eyepiece can be attributed without exaggeration to wide-field. The optical part consists of three lenses: two of them are glued to correct chromatic aberrations and installed in place of the eye lens, the third (field lens) is biconcave. The curvature of the convex surfaces is selected in such a way as to reduce spherical distortions
Schematic table of properties of the eyepiece WF16x: + +++ +++ ++ + ++ "+++" - maximum quality for glasses of similar multiplicity, consisting of 2-3 elements
When operating with a laboratory microscope equipped with an immersion lens large aperture, eyepiece WF 16x / 13 mm will achieve a magnification of 1600x. On the other hand, by adding a good student microscope with such an eyepiece, you can give your child the opportunity to work at 640x magnification in the usual way - without oil, with a "dry" lens at 40x.
In general, in terms of image quality and cost , SIGETA WF16x / 13mm eyepiece - the best choice for episodic observations at high magnification. For continuous research, it is better to prefer Plossl or Erfle glasses with multi-layered illumination. ° Focal length: 15.6 mm Departure pupil distance: 11 mm Landing diameter: 23.2 mm
