Olympus SZ-III User manual

STERlOSC01 .C
ZOOM
MICROSCO --

OLYMPUS STEREOSCOPIC ZOOM MICROSCOPE
MODEL SZ-Ill
The model SZ-Ill is .an advanced model of
SZ which was a revolut-
ionary product which adopted the zooming ma~nificotionmechanism, for
the first time in the world in a stereoscopic microscope,. rapidly expanding
its range of utilization such as in the classification of plants, anatomy
of animals, or in assembly and inspection of modern electronic products
and precision instruments.
No outfocusing effect will be experienced and any desired magnifica-
tion can be obtained within the area
of the xoom ratio 5.7. Further,
there is no "image fade away" when changing magnifications as in the
case of any former microscope.
Doubtlessly this will greatly increase the working efficiency.
A set
of Model SZ-Ill is completely equipped with accessories assuring its versatile
utilization. This may be called the definitive product of stereoscopic
microscopes.
SPECIFICATIONS :
1. Continuous flow of magnifications : Zoom ratio 5.7
2.
Total Magnifications : (with objective 1 x ) With eyepieces GlO x : 7 x -4.0 x
With eyepieces G20 x : 14 x -80 x
3. Inclined Binocular Head : Inclination-45'
Angle
of Visual Axes-12"
4. Range of Interpupillary Distance Adjustment :
With eyepieces GlO x at exit-pupil-46-74 mm.
5. Range of Ocular Tube Movement: By head rotation through 360'
6. Wide Field Eyepieces : GlO x
7. Fixed Working Distance :
1 x Objective: 88mm
0.5 x Objective : 159mm
0.75 x Objective : 105mm
1.5 x Objective : 45mm
2x Objective: 30mm
8. Body Movement (Vertical) : 102mm
By Rack & Pinion: 55mm
By Pillar : 47mm
9.
Range of Body Rotation: 75O pivoted at the the pillar
10. Stage Plates: Glass plates (clear and smoked)
Optional Accessories
: Eyepieces : G20 x paired
Objectives
: 0.5 x, 0.75 x, 1.5 x and 2 x
Epi-illumination equipment (model LSG-11)
Trans-illumination equipment (model .LSD)
Base (Reflector, Hand-rests, and illuminating lamp included.)

Magnification Ring
Mag. Indicator Ring
Threaded Hole
Cr Epi-Illuminator
Body Supporting A> Block
Focusing Knob
I
P
Head Fixing Ring
Pillar Clamp Screw
--'.
Pillar
--'J
\
Body Clamplng Screw
I , - Stagm Clip
Stage glass Plats
r
Strga dass Plat.
Clrmplng Screw
STANDARD SET:
Mimpe :
Body, Binocular Head, I x Objective
Stand : Stage, Pillar
Eyepieces: GlO x,
Stage Clips : Large
Stage Plates: Clear and Smoked Glass
Eyepiece caps, Eye-shades, Cabinet, Plastic Cover, and Guarantee Card.
1 set
1 set
1 pair
1*
1 each

OPTICAL SYSTEM s
The objective, ocular and varif'cal lens systems are arranged aa shown above. The beams
from speci-
mtn prooaad into the Objective "Ob" with an angle of visual axes of g040', wherein they are turned
parallel to each other. They further proceed through the morning vrriatibn system " ZL1 and ZL2" and
the fixed lens- " L1 ", reaching the Prism P1 " where they again assume a 12' angle of visual axes
and 45' inclination. Then the beams enter porro-prisms "P2" and finally reach the eyepieces or Oculars
" Oc ".
Continuous morning variation is performed by movement of the ZL lenses.

l€UJ GHARACTERlSTKS r
The total Wfi- may be obtained by the following formula :
Td Mag. =(Eyepie Mag.) x (Objactive Mag.) x (Magnification Indiitor Value)
Using Objective 1 x : (Built-in)
20X 2 40 X 5.0
2.5 50X 4.0 a
3 60x 3.3 8
3.5 70 x 2.9 a
4 80~ 2.5 a
Using Objective 0.5 x :

ZOOMING VARIATION LENS SYSTEM :
This system is composed of 2 sets of lenses placed and operated parallel, each set consisting of 2 groups
of varifocal lenses. The change of magnifications
is performed by zooming these group of lenstr and
changing the focal length of the objective. In case of the magnification change from
a low number to a
higher one, the lower lens group (1st tens group) rises to the middle and then comes down. The upper
lens group (2nd lens group)
is lo\vered stright down. The magnification ratio for the zooming system is
5.7 With the use of an objective 1 x ,
it varies from 0.75 x to 3 x .
The following illustration indicates
positions of lenses in different cases of magnifications.

Eyepiece Characteristics :
OBJECTIVES t
Magnification
G
10 x
G
20 x
Spacial Obejtive lenses have been designed for the exclusive use with SZ. The
standard set includes a 1 x objective. This
I x objective is built in the microscope
body and cannot be removed. 0.75 x and 1.5 x objectives are also available as spbcsal
acccwrim. Sina the
1 x objective is already fixed in the body other objectives, if
used, must be attachad under the 1 x objective.
Objective Characteristics
:
Focal Length
25 mm
12.5 mm
I Magnification I
Focal Length
I
Working Distance
Field of View (Diameter of the
View Field of
an Eyepiece)
22 mm
122 mm

BODY :
This is the maill part of the rnicrcwrcope inchding a built-in objactivc and the
zooming variation mechanism, and is attached to the pillar by a coupling ring.
When
the magnification rin~is turned, zooming movement of vary-focal lenses in the inside
give a continuous flow of magnifications.
Each scale on the magnification indicator
ring shows that its rotation
by one graduation means the change of total magnification
by
0.1 X. The body can be rotated through 360° in the frame of the body coupling
ring, thus enabling the user to freely choose whatever position he desires.
HEAD :
The head is designed with an inclinaton of 45' to the horizontal and a 12' angle
of visual axn to allow the user to rnaintgin a comfortable posture and avoid fatigues
during
a prolongad abservation. This also facilitates smooth coincidence of the two
images (right and left) into one. The range of interpupillary distance adjustment,
using eyepieces
GlOx, .is 46-74 mm. Therefore, you can adjust it to your own by
turning the ocular tubes. Eye-refraction
difference will be adjust& by focusing correctly
on the specimen through the right eyepiece and then turning the diopter ring to focus
the left eyepiece.
Inter-Pupillary
Distance Adjustment

FOCUSING MECHANISM :
Focusing is performed by: (1) Sliding the body on the pillar until rough focus is
attained and
(2) making fine adjustment by the focusing knob. The range of movement
by the focusing knob is
55mm (up and down).
STAND a
The stand is composed of a stage and a pilIar. The stage is designed to asaure
complete stability of the body mounted at the top of the pillar in whatever position
it
may be. The stage plate is mounted in the circular rtceptacle of the stagt which
is poeitioned to fit the eyepiece viewfield. The stage plates arc interchangeable ac-
cording to the method of okwations employed. Whichever plate (clear or
mktd)
may be user], it must be firmly fixed to the stage by the p~vid&i screw. The pillar
holds the microscope body and moves 47mm vertically against the st* and
r~tata
through 75' to right and left.
The inner tube of the pillar, assisted by the built-in
balancing spring, firmly holds the body
and the coupling plate, slides up and down
in the outer tube, and can
be stabilized at a desired position by the pillar clamping
screw.
ASSEMBLY AND OBSERVATION :
Pstts of the micmcmpe taka out of the cabinet will be assembled in the following
dr :
Order of Assembly :
1. Set the focusing part onto the body supporting block and secure it tightly by the
providad
scrcw.
2. The coupling ring with the micmampc will be only slightly tightened and the
body must
be firmly affixed by the providad scm.
3.
Place a stage plate into the receptacle and fasten it by the clamping screw.
4. Sct the stage clip.
5. Rcmm the eyepiece caps from the binocular tube and place eyepieces into ap
@tc position. There are two methods of obaewations-by rdccted light and
by trans-illumination. In
case of the latter, the s+l accssory (the base and the
illuminating equipment)
wilI be ud.
Order of Okrvation :
According to the type of the observation, the pPoptr stage plate must be ud-the
clear gl= for tnnc~lluminatedobservation and the smoked glass for
reflected light. ' HOW-
ever, even in the ear# of the reflected light, if the specimen is in white or in bright colon,
YOU may darken the view field by placing a piace of black board or pprunderneath
the clear stage plate, so as to give a contrast.

PARFOCALITY ADJUSTMENTS :
The Olympus Model SZ-I11 is designed to de ~arfoeaIin both right and left
eyepieces on all magnification settings at the standard distance of distinct vision
(250
mm). However, each person has
a different distance of distinct vision from the other.
TO obtain satisfactory parfocality with the Model SZ-111, follow the below described
procedures when focusing the image of specimen.
(1) Set the both (right and left) diopter rings at '0'.
(2) Set the magnification drum at '4'.
(3) Focus the image by means of the focusing knob.
(4) Set the magnification drum at '0.7'.
(5) If the image is out of focus, perform focusing by adjusting the diopter ring(s)
...... right or left, or both, as required.
DO NOT perform focus adjustment with the focusing knob.
(6) Once again set the magnification drum at '4'.
If the imagc is still out of focus, adjust the diopter ring(s) (right or left, or
both) to bring the image in focus.
DO NOT perform focus adjustment with the focusing knob.
(7) Now your Model SZ-I11 has been adjusted to be parfacal at your own distance
of distinct vision. Hence, re-adjustment
of microscope when you switch from
one magnification to the other is not necessary.