Leica DM R, Instructions Manual, Page: 43 / 115

42
For direct visual observation (see page 37 – 38
for tubes) only eyepieces of the type
HC L PLAN
can be used. Fitting diameter = 30 mm.
L PLAN type eyepieces may only be used on
microscopes of earlier series (= DM R label
on the right side of the microscope in
black ,
not red!).
PERIPLAN eyepieces, eyepieces from stereo-
microscopes or of manufacturers may not be
used, as the full performance of the objectives
would then not be utilized. Exceptions to this are
the Leica/Wild 16x /14 B and 25x /9.5 B eye-
pieces, for which a special adapter ring is
required, which is pushed onto the eyepiece
(37.2).
Eyepiece labelling
Example: 10 x/20 M (Fig. 36)
This name is put together as follows:
10x
Magnification of the eyepiece, i.e. the magnified
intermediate image produced by the objective is
additionally magnified by the eyepiece by the
engraved value (= eyepiece magnification).
Total magnification of the microscopes = M
ob
x M
eye
(Reproduction scale of the objective x eyepiece
magnification)
Example: Objektive
25x /0.50, Eyepiece 10x /20
25 x 10 = 250x total magnification
If the tube factor is not 1x, the result must be
multiplied by tube factor as well. In the above
example, the total magnification after switching
to tube factor 1.6x would be 250x 1.6 = 400x.
Fig. 37 Widefield 16x/14 B eyepiece
1 Clamp screw, 2 Spacer ring for Leica microscopes (must be
pushed upwards as far as the stop)
9 10
6
7
8b
1
2
3
4
5
10x/20
10x/20M 10x/25M
8a
10 10
10x/22M PHOTO
1
2
Fig. 36 Eyepieces
1 – 4 Eyepieces ready for use by viewers without eyeglasses
(anti-glare protection 10 mounted or pulled up), 5 PHOTO
eyepiece, 6 10x/25M eyepiece disassembled, 6 Upper part,
7 Lower part, screwed off (applies also for 10x/22M, 2.5x/6M,
but not for 10x/20 and 10x/20M), 8a, b Retainer ring for
eyepiece graticules, can be screwed out, 9 Eyepiece
graticule*, 10 Anti-glare protection, removed for viewers
wearing eyeglasses (it can be pushed back with eyepieces
10x/20 and 10x/22, insertable and remove pos. 8a or 8b). The
12.5x/6M model is basically the same as the 10x/25M eyepiece