SIGETA WF 20x / 10 mm - wide-field eyepiece for the microscope, magnifies the image built by the lens 20 times. Assembled according to the reverse achromatic scheme of Kellner: despite the high magnification force, this type of glasses is more comfortable to work with due to the solid removal of the original pupil. Flat-concave and biconvex lenses are glued to correct chromatic aberrations, the resulting flat-convex doublet is installed in place of the field lens. The eyepiece is also flat-convex, with the flat side facing out. The eyepiece has a standard landing diameter and is therefore compatible with the vast majority of biological microscopes. In the affordable price category, the WF 20x glasses have almost no equal in terms of build quality, level of aberration correction and the ratio of "multiplicity / removal of the pupil". aperture: 10 mm
Angular field of view: 46 °
Focal length: 12.5 mm
Distance of the exit pupil: 11.5 mm
Landing diameter: 23.2 mm
