Optech Basic Series Manual page 4

ILLUSTRATION LEGEND
1 Trinocular tube
2 Head
3 Head locking screw
4 Stand
5 Spring or spring-arm slide holder
6 Limit stop adjustment screw
7 Stage
8 Condenser
9 Condenser control knob
10 Spring-arm slide holder control knobs
11 Coarse/Fine control knob
12 Power on/off switch
GLOSSARY (ref. fig. 1)
a) HEAD (2): Houses the eyepieces and allows the observation of specimens.
There are three types available: monocular, binocular or trinocular.
b) STAND (4): Base and body of the microscope that supports the head.
c) STAGE (7): Mechanical platform where the slide-mounted specimen is positioned.
Equipped with a spring-arm slide holder and features co-axial controls that adjust
the x-y movement of the specimen.
d) CONDENSER (8): System of converging lenses, which concentrates the light beam
onto the specimen.This light is formed into a cone that projects into the objective
lens; it is provided with a diaphragm called the condenser diaphragm (19), which
adjusts the light beam cone angle, and sometimes with an additional wide-field lens
to still further enlarge the beam.A filter holder ring (20), positioned at the base of
the condenser, allows a blue conversion filter to be inserted (except in model B5
where it is placed in the collector filter housing 21).
e) FINE-COARSE MOVEMENT (11): Coarse-fine focussing system.
f) EYEPIECE (13): Final image magnification lens system
g) REVOLVING NOSEPIECE (15): Mechanical rotating disc on which the objectives
are mounted.With sprung, slotted stops to ensure objective alignment.
h) OBJECTIVE (16): Primary image magnification lens system
i) ILLUMINATOR COLLECTOR (23):A system of lenses, positioned on the
stand's base, which magnifies the light emitted by the lamp. It can be equipped with
a diaphragm called a collector diaphragm (22).
ENGLISH 21
13 Eyepiece
14 Dioptric compensation ring
15 Nosepiece revolver
16 Objective
17 Condenser centring screw
18 Condenser locking screw
19 Condenser diaphragm
20 Condenser filter holder ring
21 Collector filter housing
22 Illuminator collector diaphragm
23 Illuminator collector
24 Brightness control
E