Bresser Microscope Wide Angle Eyepiece DIN-WF 20x

• Eyepiece
• DIN Widefield
• 20x

Product Description The 20x eyepiece is suitable for all microscopes with 23.2 mm plug-in diameter, also from other brands or manufacturers. Please select the magnification to match your lens used. A low lens magnification allows a higher post-magnification of the eyepiece. For example, in combination with a 4x or 10x lens, eyepieces with 20x or 25x magnification without sacrificing image quality. With a 100x lens, a 10x or 12.5x eyepiece is usually the maximum. As a rule of thumb for the maximum sensible magnification can be: Numerical aperture of the lens x 1000 = max. Sensible magnification. As an example of a 10x lens with numerical aperture NA 0.25, a maximum of 250x magnification can be achieved; a 25x eyepiece is required. The numerical aperture is printed on many lenses behind the magnification indication. Magnifications over the max. Meaningful magnification does not show any further details (so-called empty magnification) and are not recommended. Many microscopes with integrated Barlow lens (e.g. Biolux) allow the use of 23.2 mm eyepieces when the Barlow lens is pulled out. Features: 10x wide-field eyepiece with 23.2 mm plug-in diameter. Wide angle eyepiece with 18 mm large field of view. Compatible: microscopes with 23.2 mm eyepiece mount. DIN standardised wide-field eyepiece: DIN-WF 20x/23 Box contents: DIN wide-field eyepiece WF20x Manufacturer's Description DIN-wide field eyepiece 20x (23mm), suitable for all microscope which can be equipped with DIN eyepieces