Meiji Techno MT-30 Series Manuale utente

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

Introduction

With your purchase of an MT-30/MT-90 series type

microscope you have chosen for a quality product.

The MT-30/MT-90 series type microscopes are

developed for use at schools and laboratories.

The maintenance requirement is limited when using

the microscope in a decent manner.

This manual describes the construction of the

microscope, how to use the microscope and

maintenance of the microscope.

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

Construction of the Microscope

The names of the several parts are listed below and

are indicated in the picture on the next page:

A) Tube (mono/bino/trino 360°rotatable)

B) Dioptric adjustment (bino type)

C) Stand arm

D) Revolving nosepiece for 4 objectives

E) Objectives

F) Safety device

G) Object stage (mechanical stage or clips)

H) Tension adjustment

I) Coaxial coarse-and ne adjustment

J) Lamp housing

K) Light dimmer

L) Coaxial stage controls

M) Condenser with irisdiaphragm + lterholder

N) On/O switch (not visible)

O) Eyepiece(s)

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

Functions of the Microscope

The stand consists of a stand arm (C), stand base and an object stage (G).

Hold the microscope at the top of the

stand arm when it should be moved.

Tube

The 360° rotatable tube (either monocular or binocular) is equipped with WF10x eyepiece (s)

(O).

Revolving nosepiece

The revolving nosepiece (D) can be equipped with 4 objectives (E).

Optical specications of the MT-30/MT-90 series range

The MT-30/MT-90 series range microscopes are standard equipped with 1 or 2 wideeld eye-

pieces WF10x (O) and semi-plan-objectives, as mentioned below in table 1.

Optical specicitions, and object stage type:

SMP4x, SMP10x, SMPS40x – Straight stage with 2 object clips

SMP4x, SMP10x, SMPS40x – Coaxial mechanical stage

SMP4x, SMP10x, SMPS60x – Coaxial mechanical stage

SMP4x, SMP10x, SMPS100x – Coaxial mechanical stage

Table 1

The S40x and S100x objectives are equipped with a spring mount, to prevent damage to the

frontlens and the slide.

The Numeric Aperture - N.A. – of the objective is an indication for the resolving power of the

objective.

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

The total magnication can be calculated by multiplying the magnication of the eyepiece

with the magnication of the objective. The magnications are displayed in the table below:

Eyepiece Objective Magnication

10x 4x 40x

10x 10x 100x

10x 40x 400x

10x 60x 600x

10x 100x 1000x

Object stage

On the basic models the slide is placed beneath the object clips. On the other models into

the clamp of the mechanical stage (G) and can be carefully moved into X- and Y- directions.

Focusing the specimen is done by using the coaxial coarse- and ne adjustment knobs (I).

Coarse- and ne adjustment

The coarse- and ne adjustment knobs (I) for the height adjustment of the object stage are

mounted together on one (1) axle (co-axial). On both ne adjustment knobs there is a gradu-

ation with intervals of 0.002 mm. This can be used to measure depths in a specimen.

Abbe condenser with iris diaphragm

Beneath the object stage an Abbe condenser (M) N.A. 12.5 is mounted. The condenser can

be adjusted in height by means of turning. With this one can focus the light on the specimen

by which the contrast can be optimised. The condenser is factory pre-centered.

The iris diaphragm with lter holder is mounted beneath the condenser. The light intensity

can be adjusted by changing the exible opening.

Illumination MT-30/MT-90 series serie

The LED illumination of the MT-30/MT-90 series is equipped with rechargeable batteries.

The length of use after charging is about 60 hours. The full charging time is about 10 hours.

At First use the batteries have to be fully charged. Connect the cable to the mains socket.

The illumination has the following specications:

• LED : 1W, 300 mA.

• Charger : Primary AC 85 - 265 Volt-50Hz.

• Batteries : 3 NiMh, AA type, 1.2 Volt 1600 - 2000 mA.

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

Preparing the Microscope for Use

Remove the packing and put the microscope on a at

table. The objectives are pre mounted.

Put the plug into the mains supply and switch on the

microscope . Sit comfortably down behind the mi-

croscope and take a relaxed position while viewing

through the eyepieces (O).

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

Working with the Microscope

Please read the following instructions to achieve the best microscope observing results.

Setting the interpupillary- and diopter distance (binocular/trinocular type)

Using a binocular tube is less tiring for the eyes than the use of a monocular tube. In order to

obtain a smooth “compound” image as well as the right interpupillary setting, one should go

through the below steps.

Field of view before Field of view after

adjustment adjustment

• Set the right interpupillary distance by moving the eyepieces towards or away from

each other until a compound eld of view is achieved (see drawing above).

• Close the left side eye and focus looking through the right side eye with the coarse-

and ne adjustment knobs (I)

• Now close the right side eye and focus the left side tube by means of the dioptric

adjustment ring (B).

This procedure should be followed by each individual user.

Setting the illumination

For optimum eect in contrast and resolution one should follow the below procedure:

Place a specimen on the object stage and focus using the 4x objective, with a fully iris

diaphragm.

• Turn the condenser in the highest position.

• Close the iris diaphragm, until it is just visible on the edge of the eld of view.

The microscope is properly set for use with the 4x objective. For each other magnication

this procedure should be repeated to ensure the best balance between contrast and

resolution.

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

Caution:

The maximum light intensity when using the 4x and 10x can damage the eyes!

When changing slides always start with the 4x objective again.

Safety device

To prevent damage to the objective lens, or breaking the slide, all types are equipped with a

pre-xed safety device.

It is recommended to use slides of 1.0 – 1.2 mm thickness in combination with cover glasses

of 0.13 mm or 0.17 mm thickness

Use of the S100x oil-immersion objective

Some of the microscopes are equipped with a S100x N.A. 1.25 oil immersion

objective. Please follow these instructions for using this objective:

• Focus the image with the S40x objective.

• Turn the revolving nosepiece so the S100x objective almost reaches the

click-stop.

• Put a small drop of immersion oil on the centre of the slide.

• Now turn the S100x objective so that you feel the click stop.

• The front lens is in contact with the immersion oil.

• Look through the eyepiece (O) and focus the image with the ne

adjustment knobs (I).

• The distance between the lens of the objective and the slide is only

0.14mm!

• In case there are small bubbles visible turn the S100x objective a couple of

times left/right so that the front of the objective moves in the oil and the

bubbles will disappear.

• After using the S100x objective turn the table (G) with the ne adjustment

knobs (I) downwards until the front lens doesn’t touch the oil any longer.

• Always clean the front lens of the S100x objective with a piece of lens paper

that is moistened with a drop of xylol or alcohol.

• Clean the slide after use as well.

The S100x can also be used without immersion oil (dry). Please be aware of the

fact that in such case the resolution will be much lower!

Caution

• Never put a drop of xylol or alcohol directly on the lens of the objective. It

could enter the objective and dissolve the glue that holds the lenses!

• Avoid oil contact with any of the other objectives!

MT-30 & MT-90 Series

Advanced Academic Microscopes/ Advanced Academic Polarizing Microscope

INSTRUCTION MANUAL

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