Olympus BHT User manual

OLYMPUS SYSTEMMICROSCOPE

Model

BHT

OLYMPUS

This instruction manual has been written for the use of the Olympus System Microscope Model

BHT.

It is recommendedthat you read the manual carefully inorder to familiarize yourself fully

with the use of the microscope, so that you can obtain optimum performance from it.

IMPORTANT

bserve the following points carefully:

Operation

Always handle the microscope with the care it deserves, and avoid abrupt motions.

Avoid the use and maintenance of the microscope in direct sunlight, high temperature and

humidity, dust and vibration.

Only use the tension adjustment ring for altering the tension of the coarse adjustment

knobs. (Donot twist the two coarse adjustment knobs in opposite directions simultaneous-

ly, as this will cause damage.)

Make sure that the voltage selector switch on the base plate is set to conform with the local

mains voltage.

Make it a point of grounding the microscope to prevent electric accidents.

Maintenance

Lenses must always be kept clean. Carefully wlpe off oil or fingerprints deposited on the

lens surfaces with gauze moistened with

small amount

xylene, alcohol or ether.

Do not use organic solutions to wipe the surfaces of various components. Plastic parts,

especially, should be cleaned with neutral detergent.

Never disassemble the microscope for repair. Only authorized Olympus service personnel

should make repairs.

The microscope should be covered with the vinyl dust cover provided and stored in a place

free from humidity and fungi. For extended storage it is recommendedto keep objectives

and eyepieces in desiccators, containing desiccants such as silica gel.

CONTENTS

...

STANDARD EQUIPMENT

II.

NOMENCLATURE

Ill. ASSEMBLY

...................................

IV. IDENTIFICATION AND FUNCTION OF VARIOUS COMPOhlENTS

. .

V. OPERATION

..................................

A. Switching on the Light Source

voltage Adjustment and Light Intensity

Placement of a Specimen Slide

pizGq

...............

kwecimen Slide

..............

C. Observation Tube

lnterpupillary Distance Adjustment

Diopter Adjustment

Light Path Selector

Condenser Adjustment

Condenser Centration

Field lris Diaphragm

Aperture lris Diaphragm

Focusing Adjustment

............................

Tension

Coarse Adjustment Knobs and Fine Adjustment

l~seof Rubber Cap for Fine Adjustment Knob

Pre-Focusing Lever

Adjustment

Stage Block Height

F. Use of Immersion Objectives .....

Photomicrography

VI. OPTICAL DATA

VII. TROUBLESHOOTING . .

STANDARD

EQUIPMENT

Component Model

Line cord UYCP

111111

Microscope stand BHT-F

Quintuple revolving nosepiece BH2-5RE

Observation tubes

Square mechanical stage with right-hand

low drive coaxial controls BH2-SVR

Abbe condenser BH2-CD 1 1 0

Condensers

Swing-out condenser BH2-SC 0 0

Halogen lamp holder LS-20H 1 1

Binocular tube BH2-B130

o---

Trinocular tube BH2-TR30

Halogenbulbs 6V20WHAL 2

Ach. 4X.

Ach. IOX,D Ach. 40X, 1

Ach. 100X (oil) each

bjectives D Plan 4X. D Plan 10X.D Plan 40X

Plan 100X (oil) 0

Eyepieces WHKIOX

Filter

Photo eyepiece

K3.3X

Immersionoil, bottled

11111

VinyTdust cover

0 0

II.

NOMENCLATURE

The Model BHT consists

various components and interchangeableaccessories as shown in the

photo below.

wide variety of combinations, standard or optional, is availableaccording toyour

requirements.

Revolving

Objective

Stage

Microscopestand

Observation tube

Halogenlamp

holder

Condenser

Base

Ill.

ASSEMBLY

This picture illustrates the sequential procedure of assembly. The numbers indicate the

order of assembly of various components. Remove dust caps before mounting components.

Take care to keep all glass surfaces clean, and avoid scratching the glass surface.

NOTE:

For numbers

and

please refer toexplanations indetail on the next page.

Eyepiece

Condenser clamping screw

Halogen bulb

Condenser

(The

N.A.

scale

engraved onthe con-

Microscope stand

denser

should

face

the

microscope front.)

Line cord

Outlet

Explanations in detail

Mounting the stage

Loosen the stage clamping screw

rotating counterclockwise. (Fig.

Insert the stage into the mounting dove-

tail of the microscope stand slowly and

lock with clamping screw.

Mounting the revolving nosepiece

L-oosen the nosepiece clamping screw

(Fig.

Aligning the nosepiece dovetail slide to

the mounting block

push inthe nose-

piece slowly all the way.

NOTE:

Do not tilt or rock the nose-

piece while inserting into the

mounting block.

Mounting the observation tube

Loosen the clamping knob

fully. Pull

spring-loaded clamping knob

This

will cause the locating pin

towithdraw.

(Fig.

If the pin does not, loosen the

screw further until the pin withdraws.

With clamping knob

pulled out, insert

the circular dovetail of the observation

tube into the ring dovetail.

Tighten the clamping knob.

Fig.

IV. IDENTIFICATION AND FUNCTION OF VARIOUS COMPONENTS

Light path selector knob

Tension adjustment ring

Clockwise rotation increases

coarseadjustment tension.

Specimenholder

Stage clamprngscrew

Loosen the screw and

the stage can be rotated

Coarse

adjustment knob

Coarseadjustment

range 26mm

Aperture ~ris

diaphragm ring

Condenser centering knobs

Y-axis low drive control

knob

excursion range

50mm

Voltmeter

Fineadjustment knob

Graduated in increments

Slidinq voltaqe control lever

Voltage lowers

the lever is

pulledtoward the microscope

front.

Photo tube

Condenser height

adjustment knob

Pre-focusinglever

Filter mount

L~necord

adjustment

Arrow mark

indicates

increase

diaphragm diameter.

Summary of Putting

the

Microscope into Operation

Model

BHT

Match the voltage selector switch to local mains voltage (page

9).

Switch on the light source (page

9).

Place

specimen slide on the mechanical stage (page

9).

Coarse focus with the

objective (page

10.

13).

Make interpupillary distance and diopter adjustments (page

11).

Adjust the condenser position (page

12).

Swing in the desired objective.

Adjust light intensity.

Fine focus.

Adjust aperture iris diaphragm and field iris diaphragm (page

12).

Adjustment of Illumination System for Various Objective Powers

Condenser

Compatible Swing intop

lens

Objective

magnification

*N.A.

is somewhat low, but st111compatible with

100X

objective.

(Cut off this page at dotted line and put iton the wall near the microscope for

use

as a reminder

micro-

scopic procedure.)

Achromatic-

condenser

BH2-AAC

OLYMPUS

Abbe

condenser

BH2-CD

Swing-out

condenser

BH2-SC

Low power

condenser

BH2-UL-C

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