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a system of two or three wide-angle, achromatic, convex, and planoconvex lenses that may be moved upward or downward beneath the stage of a microscope, thereby regulating the concentration of light (directly from a bulb or reflected from a mirror) that passes through the material to be examined on the stage.
Abbe condenserA 2-lens sub-stage condenser combination designed by Ernst Abbe, which lacks chromatic correction but is designed for a minimum of spherical aberration and has only a very low-angle aplanatic cone; it may be rated with a numerical aperture as high as 1.3.
Abbe condenser(ob'e, ab'e)
[Ernst Karl Abbe, Ger. physicist, 1840–1905]Substage condenser.
Abbé,Ernst Karl, German physicist, 1840-1905.
Abbé condenser - a system of two or three wide-angle, achromatic, convex, and planoconvex lenses.
Abbé-Zeiss apparatus - instrument for counting red blood cells in blood sample. Synonym(s): Thoma-Zeiss apparatus