109
Examp le
The upper and lower surfaces of a thin polished
specimen have been focused with a dry
objective (n
i
= 1.0) scale readings of the mechanical
fine drive (division spacing = 2 m) : 19.0 and 12.5.
Therefore d’ = 2 x 6.5
µ
m.
The refractive index of the object detail was
taken to be n
o
= 1.5.
Thickness d = 2 x 6.5 x 1.5 = 9.5
µ
m
TV m icroscopy
Various adapters are available for the
connection of TV cameras with c-mount or B-
mount objective thread (Fig. 69).
C-mount adapters listed in the following table
can be used on all phototubes and on the Leica
DM RD photomicroscope. The picture area on
the monitor depends on the adapter used and on
the chip size of the camera (s. table).
Fig. 69
c-mount adapter and B-mount (Vario)
1
TV camera,
2
Adapter with c-mount thread,
3
Clamp screw in tube head
a
c-mount adapter for 1 chip cameras
b
Vario TV adapter
Recorded picture diagonal with
1 inch
2
/
3
inch
1
/
2
inch
1
/
3
inch
camera camera camera
camera
Without zoom magnification for 1 chip cameras
c-mount adapter 1x HC
16
11
8
6
c-mount adapter 0.63x HC
–
17.5
12.7
9.5
c-mount adapter 0.5x HC
–
–
16
12
c-mount adapter 0.35x HC
–
–
–
17.1
c-mount adapter 4x HC
4
2.8
2
1.5
Without variable magnification, for 1 – 3 chip cameras
in conjunction with TV optik 0.5x HC (screwed connection)
c-mount adapter 1x
–
–
16
12
B-mount adapter 1x
–
–
16
12
B-mount adapter 1.25x
–
17.5
–
–
F-mount adapter 1x
–
–
16
12
F-mount adapter 1x
–
17.5
–
–
With zoom magnification (Vario TV adapter) for 1 chip cameras
c-mount, 0.32 – 1.6x HC
–
–
19
+)
– 5
18 – 3.8
B-mount, 0.5 – 2.4x HC (SONY) –
–
16 – 3.3
–
B-mount, 0.5 – 2.4x HC (SONY) –
–
–
12 – 2.5
+)
from zoom factor 0.42x
!
