Motic K400 User manual

STEREO MICROSCOPE

MODEL K400 / K500 / K700

INSTRUCTION MANUAL

Contents

1. Introduction …………………………………………………………….…..2

2. Nomenclature and Function…………………………………………..…..3

3. Assembly……………………………………………………..………….....5

4. Operating the Microscope……………………………………….……..…6

4.1 Interpupillary Distance Adjustment…………………………..………..…6

4.2 Diopter Adjustment………………………………………………………...6

4.3 Focusing………………………………………………………………….....7

4.4 Working Distance………………………………………………….……….8

5. Care of the Microscope………………………………………………...….8

6. Accessories………………………………………………….……………...9

1. Introduction

A simple change in magnification for still objects has been provided in

stereomicroscopes developed in the recent past i.e. with a common primary

objective for the light in both tubes. The light beams do not project co-axially,

but diverge from the optical axis. Thus the two images produced are not

identical, giving a truly three–dimentional appearance.

In this adaptation, separated intermediate objectives are placed above

the common primary objective to produce the two beams and a magnified

image. The intermediate objectives, placed above the main objective in the

tube, can be easily manipulated to facilitate the change in magnification. It is

important that the distance from the object is not altered when the

magnification is changed.

A further refinement to this design is provided with the introduction of

pancratic intermediate objectives in the tube. The use of graduated changes

in magnification provides a continuous progression of magnification. The

most significant advantage of stereomicroscopes, with a common primary

objective, is that the distance between the objective and the object remains

constant at all magnifications.

To ensure correct usage, please read this manual completely before

operating the instrument.

2. Nomenclature and Function

Model K 400 Stereo Microscope

Eyepiece

Diopter Ring

Diopter Scale

Binocular Eyepiece Tube

Magnification Changer

Objective

Focusing Knob

Focusing Mount

Stage Plate

2. Nomenclature and Function

Model K 500 Stereo Microscope

Model K 700 Stereo Microscope

Eyepiece Tube

Clamp Screw

Zoom Magnification

Changer

3. Assembly

1. The base plate of the incident light stand (and the base of the

transmitted light stand with light source) with support column, in their

standard variants, are a typical working stand. The focusing mount

moves along the vertical column and is fixed in position by the focusing

mount clamp screw. The safety support collar maintains the adjusted

height and is secured below the focusing mount by the clamp screw

along the vertical column.

2. Tilt the binocular eyepiece tube and mount it on the optical head with

the magnification changer - aligning the groove with the positioning pin

and fasten the eyepiece tube clamp screw.

The binocular tube may be turned through 180° and each eyepiece

tube is equipped with a diopter adjustment ring.

3. Insert the eyepieces into the eyepiece tubes. Set the diopter scale on

each eyepiece to “0”.

4. Fit the stage plate, while pushing

it against the clip, in the rim of the

opening in the base.

The black or opal surface is to be

used according to the specimen

to be observed. For transmitted

light base, use the ground glass

plate.

4. Operating the Microscope

4.1 Interpupillary Distance Adjustment

This adjustment should be

performed every time the

observer changes as the

interpupillary distance differs

between the individuals.

Interpupillary distance is changed

by simply spreading the eyepiece

tubes. They will hold their position

at the selected setting.

This will allow the view field of

each eye to merge into one.

Interpupillary distance values

range from 54mm and 76mm.

4.2 Diopter Adjustment

Both eyepieces can be focussed independently to compensate for refractive

differences of the eyes.

a. Turn the diopter rings on both eyepieces to set them at the “0”

position.

b. Turn the magnification changer to maximum. Focus on the sample

using the focus knob.

c. Turn the magnification changer to minimum. Look through the left

eyepiece with the left eye, focus on the specimen using the diopter

ring on the left eyepiece. Then, look through the right eyepiece

with the right eye and focus on the specimen using the diopter ring

on the right eyepiece.

d. Repeat steps 2.2 and 2.3 until the image is kept focused even

though the magnification is changed. This adjustment ensures

sharp image throughout the magnification change.

4. Operating the Microscope

4.3 Focusing

The focus knobs are conveniently

shaped and allow accurate

focusing over a 50mm range.

The ease of movement can be

matched to the load and to your

personal needs.

Focus knob torque adjustment

It is possible to adjust the torque

"tension" of the focus knob.

To increase the torque, turn either of the torque adjustment rings

located behind the focus knobs - after slackening the Hex set screw

turn the right ring in the clockwise direction - turn the left ring in the

counter clockwise direction after slackening the Hex set screw. To

reduce the torque turn the rings in the direction opposite to the above.

Do not reduce the torque too much since the optical body will fall of its

own weight.

The roller bearing slide of the focusing mount is maintenance free.

4. Operating the Microscope

4.4 Working Distance

The distance between the upper surface of the specimen and the

bottom of the objective, when the specimen is in focus, is called the

working distance of that objective. The working distance changes when

the objective magnification changes and when auxiliary objectives are

attached. Generally, the working distance becomes shorter as the

objective magnification increases.

When observing a particularly thick specimen, the distance between the

upper surface of the specimen and the objective may be shorter than

the working distance of the objective. If this occurs, loosen the focusing

mount clamp screw and slide the focusing mount to the upper end of the

column.

5. Care of the Microscope

Keeping all optical components clean is important for good optical

performance. The microscope should always be covered with the vinyl dust

cover provided with the instrument when not in use.

Dust on the surface of lenses may be removed by the use of a soft lens

brush i.e. before attempting to wipe the surface clean.

Persistent fingerprints and oily smears on eyepieces and other microscope

body parts may be removed with soft cloth moistened with absolute alcohol.

Painted and plastic surfaces should be cleaned with mild detergent solution.

Store the microscope in a room free from humidity and corrosive fumes.

6. Accessories

Eyepieces

Micrometer Eyepieces

6.25X/F.N.23, 10/X/F.N.21, 15X/F.N.17.6,

20X/F.N.13.4, UW10XF.N./23, 32X/F.N.12.

10X/F.N.23 360° Protractor,

10X/F.N.23 14mm:0.2mm

10X/F.N.23 14mm:0.1mm

20XF.N.13.4 10mm:0.1mm

Auxiliary Objectives 0.3X, 0.5x, 0.625X, 1.5X, 2.0X,

Base/Stand Plan stand, Transmitted light stand, Universal

table stand, Universal clamp stand, Articulating

arm table stand, Articulating clamp stand.

Stage Inserts Gliding Stage

Photographic and

CCTV

Beam Splitter with Double iris for Photography

K400

Beam Splitter with Double iris for Photography

K500/K700

Beam Splitter with Double iris for CCTV K400

Beam Splitter with Double iris for CCTV

K500/K700

Drawing Tube For K400 can be mounted in two positions

180° apart thus suitable for left and right-hand

observers.

For K500/K700 can be mounted in two

positions 180° apart thus suitable for left and

right-hand observers.

Observation Options Dual Teaching Head with Electronic pointer

Illuminators Epi-illuminator, Fluorescent ring light,

Fiber-Optics bifurcated illuminator

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