OPTO-EDU A15.2601-T User manual

A15.26 01-T
Polarizing Microscope, Transmit
Instruction Manual
To ensure the safety and obtain satisfactory performance, please study this instruction manual thoroughly be
fore start to use the instrument.

Contents
1.Purpose …………………… 2
2.Specification …………………… 2
3.Parts Name …………………… 4
4.Installation …………………… 8
5.Operation …………………… 9
6.Maintenance …………………… 11
7.Troubleshooting …………………… 13
Outfits …………………… 14

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1.Purpose
BK-POL Series polarizing microscope is for the field of metallurgy, geology
and minerals.
BK-POL Series polarizing microscope is with gypsum(λ), mica (λ/4)
sample, quartz wedge and attachable mechanical stage. It is an ideal
instrument that has perfect function and quality.
BK-POL/BK-POLR transmitting/reflecting polarizing microscope is perfect
in optical and mechanical quality, and it can be used in observing even,
non-even, transparent, non-transparent mineral sample.
2. Specification
2.1 Total Magnification
2.1.1 Transmitting
Objective
Eyepiece 4X 10X 20X 40X 60X 100X
10X 40X 100X 200X 400X 600X 1000X
2.1.2 Reflecting
Objective
Eyepiece 5X 10X 20X 50X 100X
10X 50X 100X 200X 500X 1000X
2.2 Objectives
Objective N.A. Working distance (mm)
Non-stress
Infinity Plan
Objective
(Transmitting)
PLAN 4X 0.10 12.1
PLAN 10X 0.25 4.64
PLAN 20X(S) 0.40 2.41
PLAN 40X(S) 0.66 0.65
PLAN 60X(S) 0.80 0.33
PLAN 100X(S,Oil) 1.25 0.19
Non-stress
LWD Infinity
Plan Objective
(Reflecting)
LPL 5X 0.13 16.04
LPL 10X 0.25 18.48
LPL 20X 0.40 8.35
LPL 50X(S) 0.70 1.95
PLAN 100X(S,Dry) 0.90 1.10

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2.3 Eyepiece
Magnification Type View Field Diameter(mm)
10X High eye point 20/22
10X Reticule (0.1mm) 20/22
2.4 Mechanical Tube Length: ∞
2.5 Head: Seidentopf binocular (trinocular) head 30°,
Interpupillary adjustable distance is 48-76mm.
Diopter adjustable range ±5,
Anti-fungal systems.
2.6 Intermediate: 360°part division for analyzer, 2°30’per scale, lock
system
Bertrand Lens (center adjusting)
Gypsum(λ), mica (λ/4)sample, quartz wedge
2.7 Nosepiece: Quadplex or quintuple nosepiece (center adjusting),
nosepiece spanner.
2.8 Revolving Round Stage: Diameter Φ174mm, 360° part scale, 6’per
scale.
2.9 Focusing System: Coaxial coarse and fine focusing knobs, coarse
stroke 22mm.
Fine division 2µm, condenser up-down range 22mm
2.10 Condenser: Abbe condenser, N.A. 1.25, adjustable aperture,
aperture center can be adjustable.
360°part division for polarizer, 5° per scale, lock system
2.11 Electric components: Input voltage AC100-240V, 50/60Hz
Output voltage DC1.2-6V
12V/20W halogen lamp
Rotation potentiometer with power switch
Fuse 5A ф5×20
2.12 Filter: Blue (Amber, green, neutral filter optional)

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3. Parts Name
BK-POL Transmitting Polarizer Microscope (1)
Stage
Locking
Screw
Tube Fixing Hole
Eyepiece
Diopter Adjusting
Trinocular Head
C
-
mount Fixi
ng Screw
Bertrand Lens Slip
Complementary Inlet
Analyze
r
Centering
Nosepiece
Condens
Polarizer
Field Diaphragm
Revolver
Aperture Diaphragm
Centering Screw
Condenser
Thumb Screw
Main Body
Fixing Screw
Stage
Centering
Screw
Clamp
Bertrand Lens
Focuing knob
Bertrand Lens
Centering Screw
Head
Thumb
Screw
Main
Bod
Potentio
-
mete
Right Fine
Focusing Knob
Right Coarse
Focusing Knob
Revolving
Round Stage
Stage Center
Lock
ing
Screw

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BK-POL Transmitting Polarizer Microscope (2)
Handle
Condenser
Focusing
Knob
Power
Socket
Power
Switch
Coarse Focusing Tension
Adjusting Ring
Left Fine
Focusing Knob
E-intermediate
C-mount
Analyzer Screw
Objectiv
es
Bertrand Lens
Locking Screw
cursores
Adjustable level
for swing-out
Conden
ser
Left Coarse
Focusing Knob
λ
Slip (First Class Red)
Quartz Wedge
Quartz Wedge
1-4 Order
λ/4
Slip

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BK-POLR Transmitting & Reflecting Polarizer Microscope
Face of
Power House
Back of
Power House
Power house
Potentiometer Power switch
Fuse
Input socket
Output socket
Halogen
lamp house
Halogen Lamp
Centering Knob
Lamp house
fix screw
Ground
glass slider
Aperture diaphragm lever
Field diaphragm lever
Slider handle
Power line
（with plug）
Reflection
illumination
Filter slider
Polarizing slider

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4. Installation
4.1 Installation Condition
4.1.1 The required input voltage: 100V-240V, 50/60HZ
4.1.2 Alcohol, gasoline and paper all are burnt early, please take them
away from the lamp.
4.1.3 The halogen lamp: 12V/20W, G4
4.1.4 The microscope should be used in environment of indoor
temperature 0°-40°C and maximum relative humidity 85%.
4.1.5 Please pay attention to prevent microscope from violent shake and
vibration in application and in carrying. Don’t drag it on the surface of
worktable to avoid damage to microscope and worktable.
BK-POLF Reflecting Polarizing Microscope
(Reflecting)
Rotatable Stage
Support of
Quick Down
Stage Support
Locking Nut

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4.2 Installation
4.2.1 Please confirm the installation condition meets 4.1;
4.2.2 Put out the main body and place it in table, and loose the main body
fixing screw, then put the cost cover out;
4.2.3 Put out the intermediate, fix it into the main body, then tighten the
main body fixing screw; If it is Transmitting & Reflecting Polarizer
Microscope, put out the reflecting illumination unit to fix it.
Installation of reflecting illumination unit: Put out the halogen lamp
house, fix it onto the back of reflecting illumination unit by the fixed screw,
connect the power wire of halogen lamp house into the power output
socket of power house.
4.2.4 Fix the head into the intermediate;
4.2.5 Insert the eyepieces into the tubes;
4.2.6 Put out the dust cover of the nosepiece, and turn the coarse focusing
knob to lower the stage, and find the objective hole with yellow mark in
the nosepiece. Fix the 10X objective into the hole, and turn the nosepiece
clockwise, fix the other objectives as per the power.
4.2.7 Loose the condenser lock thumb and fix the condenser.
5. Operation
5.1 Turn the power switch and the potentiometer to adjust light to be
available;
5.2 Fix the sample on the stage, and move it into the path;
5.3 Turn the nosepiece to put 10X objective into light path, and turn the
focus knobs to get clear image.
5.4 Confirm the polarizing vibrancy direction
The polarizing vibrancy direction has set to be at west-east in factory
when the scale of the polarizing is 0°.
5.5 Check polarizing and analyzer
The field should be dark completely (when there is no sample) when the
scale of polarizer and analyzer is 0°. Please check the position of the

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polarizer and the analyzer if not so.
5.6 Choose the complementary slip as per the sample, then insert into the
slip.
5.7 Put into the Bertrand Lens Slip in the condition of polarizing;
5.8 Adjust the center of the stage.
5.9 Adjustment for round stage rotating center
The rotating axis of the round stage should be in the same line with the
axis of optical system. When rotating the stage, the sample’s center would
coincide with view field’s cross division line intersection point, and image
should move around cross division line intersection point in circular
motion, image should always in the view field. If not, accurate data can’t
be got, and the operation can’t be done correctly, especially for high
power objective.
Adjusting Details:
5.9.1 After getting clear image, choose one image point ( I ) at the
observational position, then moving mineral sample , making I in cross
division line’s point, and it is the center of field (mark: O1 ).
5.9.2 Stage must rotate at least one circle, if actual rotating center (mark:
O) isn’t coincided with field center O1 , image point I will do circular
motion around stage rotating center O .
5.9.3 The angle from rotating stage to initial position is 180°, point I will
move from O1 to the full distance position , the symmetric point to point O.
Adjusting the stage focusing screw, point I will move to point O, then
move mineral sample gently, make point I coincided with field center O1 .
5.9.4 Rotating stage one circle again, if image point I isn’t off point O1, it
means point O has coincided with point O1, then the center adjustment is
finished. If not, please repeat step2 , 3, 4.