38
BSA 25
Binocular observation tube 25, Fig. 31.1
Viewing angle 30
°
, not for polarized light
microscopy.
HC FSA 25 P
Binocular obervation and photo tube (31.2).
Viewing angle 30
°
, also for Pol microscopes,
with 3 clickstop positions of the beamsplitter in
the tube:
Switch rod (31.4)
Visual
Photo
|––––
100 %
0 %
|––––––
50 %
50 %
|–––––––
0 %
100 %
HC FSA 25 V
Binocular observation and photo tube (31.10)
with variable viewing angle from 0 – 35
°
and
image erection, i.e. image of object appears the
right way up and the right way round.
2 switching positions: 100 % light to binocular
port or 20 % visual and 80 % vertical. Not for
polarizing microscopy.
HC FSA 25 PR
Binocular observation and phototube (31.2).
Like HC FSA 25 P, but with additional back
reflection for the MPV microscope photometer.
Switchable light trap of the binocular port for
microphotometry. Back reflection only at the
beamsplitter setting 50 % / 50 %.
HC FSA 25 PE
Binocular observation and phototube (31.3).
Like FSA 25 P, but with additional provision for
the overlay of transparent (diapositive overlay)
or non transparent (macro device) masks, see
pages 40 and 102.
Photo adapter tube HC FSA and HC L
Interchangeable photo adapter tube with
vertical exit (32.2) or with vertical
and
horizon-
tal* exit (32.1) for all HC FSA tubes, with 2
clickstop positions for switchable beamsplitter
(100% to the top exit or 100% to the back). The
photo adapter tube HC L* (not ill.) with fixed
beamsplitter ratio 50 % / 50% is available as an
option for the HC L3T phototube (DM L series).
Fig. 32
Photo adapter tube for FSA HC tubes
1
Switchable photo adapter tube*,
2
Vertical photo adapter
tube,
3
Beamsplitter switch rod (not for HC L3T tube),
4
Clamp
screw
3
1
2
4
4
4
