Zeiss KF 2 ICS Especificaciones descargar pdf (Pagina 21)

KF 2

ICS

Carl Zeiss

B 40-028 e 10/97 3-3

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OPERATION

3.1 Choice of objectives

The objectives are the centerpiece of the microscope. The following is an example of how objectives can

be labeled:

CP-"Achromat" 10 /0.25 /-

where

10 = objective magnification

0.25 = numerical aperture

= infinite tube length

- = usable for covered and uncovered specimens

0.17 = only for covered specimens with a cover slip thickness of 0.17 mm

The objective magnification multiplied with the eyepiece magnification (minimum 10x) results in the

visual overall magnification: e.g. 10 10 = 100 .

The numerical aperture 1000, e.g. 0.25 1000 = 250, is the highest useful magnification, i.e. no

further details are resolved above that limit.

The " "sign means that these objectives cannot be used with microscopes the objectives of

which are labeled with "160" for the mechanical tube length.

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Zeiss KF 2 ICS Especificaciones Pagina 21