Leica DMLS, Инструкция по эксплуатации, Страница: 25 / 160

25
Field performance of intermediate modules
The maximum admissible field performance of
the intermediate modules is derived from the
type designation listed in the following table and
also on your invoice. Each type designation
consists of 2 values separated by a slash, e. g.
Ergomodule
2/25 .
The first value ( 2 in our example) is a relative
measure (height index) of the overall height of
the module. If this height index is multiplied by
the factor 15, the distance by which the viewing
port or the overall height of the microscope is
raised is obtained in
mm. The second value (25
in our example) is the maximum possible field of
view number possible with this module.
Example: Ergomodule L 2 /25.
The viewing port is raised by 2 x 5 = 30 mm
(approx. value).
Maximum possible fov = 25.
Ergomodule L 2/25
Magnification changer L 3/25
Pol module (intermediate tube) L 4/25
Tracing device L 3/20
Dual-viewing attachment L 3/20 (2 viewers)
Multi-viewing attachment MD L 3/20 (max. 5 viewers)
Illuminator LFS 4/20 for fluorescence
Universal illuminators LU/LUP 4/25 for incident light
techniques
Field of view no. of tubes
The type designation contains three-digit
combination of numbers which indicate the
maximum admissible eyepiece fov number, e.g.
Binocular tube HC LB
0/3/4 incl. HC PL + HCX PL
models.
The numbers have the following meanings
(
→
table on p. 26):
the numbers 0/3/2 indicate the maximum
permissible height index of the intermediate
modules (see section on field performance at
the top of this page) for the eyepiece field of
view numbers
25, 22 and 20 (
→
p. 24).
That is to say, in the above example:
1st number ( 0 ): Fov 25 is only possible if the
tube is directly attached to the microscope,
i. e.
without an intermediate system.
2nd number ( 3 ): Fov 22 can only be obtained
up to height index 3 , e. g. magnification
changer L 3 /25 can be used.
3rd number ( 4 ): Fov 20 is possible up to a
maximum height index of 4 , e. g. 2 Ergomodu-
les L 2 /25.
If there is dash instead of number, e. g. –/–/7, it
means that the tube cannot be used for the
corresponding field of view at all, i. e. in the
example not for fov 25 and 22, while fov 20 is
possible up to index
7 .
Overstepping the admissible values can cause
vignetting (shading at the edges of the image)
with some objectives.
HC engraving: Only eyepieces of the type HC
PLAN and widefield 16x and 25x (
→
p. 11 and 24)
can be used.