Olympus BX-RLA2 User manual

INSTRUCTIONS

BX-RLA2

REFLECTED LIGHT BRIGHTFIELD/

DARKFIELD ILLUMINATOR

This instruction manual is for the Olympus Reflected Light Brightfield/Darkfield Illuminator Model BX-RLA2.

The BX-RLA2 is capable of brightfield and darkfield observations under the reflected light when it is

installed on the BX51RF/BX51TRF system microscope frame together with the BXFM focusing unit. To

ensure the safety, obtain optimum performance and to familiarize yourself fully with the use of this unit, we

recommend that you study this manual thoroughly before operating the microscope. Retain this instruc-

tion manual in an easily accessible place near the work desk for future reference.

A X 7 6 2 1

1Selecting the Light Path 2 Centering the Field Iris Diameter (FS)

3Centering the Aperture Iris Diaphragm (AS)

4Using the ND Filter Knob 5Using the Filters

BX-RLA2

CONTENTS

Correct assembly* and adjustments are critical for the microscope to exhibit its full performance. If you are going to assemble the

microscope yourself, please read Chapter 9, “ASSEMBLY” (pages 26 to 27) carefully.

IMPORTANT — Be sure to read this chapter for safe use of the equipment. — 1-2

1 SYSTEM DIAGRAM 3

2 NOMENCLATURE OF BX-RLA2 4

3 REFLECTED LIGHT BRIGHTFIELD/DARKFIELD OBSERVATION PROCEDURE 5-6

4 USING THE CONTROLS OF BX-RLA2 7-11

5 STAGE FOR METALLURGICAL SPECIMENS 12-13

1Placing the Specimen 2Using the Y-Axis Lock Lever

6 OBSERVATION METHODS 14-19

6-1 Reflected Light Brightfield/Darkfiled Observation ....................................................................................................................................14

6-2 Reflected Light Nomarski DIC Observation ............................................................................................................................................. 14-19

6-3 Reflected Light Simplified Polarized Light Observation ................................................................................................................. 19

7 SPECIFICATIONS 20

8 OPTICAL CHARACTERISTICS <<UIS2 (UIS) Series>> 21-25

9 ASSEMBLY 26-27

IMPORTANT

1Getting Ready

1. A microscope is a precision instrument. Handle it with care and avoid subjecting it to sudden or severe impact.

2. Do not use the microscope where it is subjected to direct sunlight, high temperature and humidity, dust or vibrations.

3. This unit can be used with an intermediate attachment such as a U-CA magnification changer or U-EPA2 eyepoint

adjuster.

2Maintenance and Storage

1. To clean the lenses and other glass components, simply blow dirty away using a commercially available blower and wipe

gently using a piece of cleaning paper (or clean gauze).

If a lens is stained with fingerprints or oil smudges, wipe it gauze slightly moistened with commercially available absolute

alcohol.

!Since the absolute alcohol is highly flammable, it must be handled carefully.

Be sure to keep it away from open flames or potential sources of electrical sparks —— for example, electrical

equipment that is being switched on or off.

Also remember to always use it only in a well-ventilated room.

2. Do not attempt to use organic solvents to clean the components other than the glass components. To clean them, use a

lint-free, soft cloth slightly moistened with a diluted neutral detergent.

3. Never attempt to disassemble any part of the microscope.

4. When not using the microscope, set the main switch to “ ” (OFF), wait until the lamp housing has cooled down, and

keep the microscope covered with a dust cover.

5. When disposing of this product, check the regulations and rules of your local government and be sure to observe them.

BX-RLA2

3Caution

If this unit is used in a manner not specified by this manual, the safety of the user may be imperiled. In addition, the

equipment may also be damaged. Always use the equipment as outlined in this instruction manual.

The following symbols are used to set off text in this instruction manual.

!: Indicates that failure to follow the instructions in the warning could result in bodily harm to the

user and/or damage to equipment (including objects in the vicinity of the equipment).

# : Indicates that failure to follow the instructions could result in damage to equipment.

} : Indicates commentary (for ease of operation and maintenance).

SYSTEM DIAGRAM

Reflected Light Brightfield/Darkfield

Illuminator

BX-RLA2

* Replace the standard stage with the stage for metallurgic specimens or the specimen

holder with the stage plate for edsier operation.

Reflected Light

Lamp Housing

Module

Reflected Light Brightfield/Darkfield

Illuminator

BX-RLA2

Stage for

Metallurgic

Specimens

or Stage

Plate*

Microscope frame

BX51RF

BX51TRF

Illuminator Holder

BXFM-ILH

Focusing Unit

BXFM-F

BX-RLA2

NOMENCLATURE OF BX-RLA2

Polarizer insertion slot (Page 14)

Analyzer insertion slot (Page 14)

Mirror selector lever

(Page 7)

ND filter knob (Page 10)

FS centering screws (Page 7)

Field iris diaphragm (FS) knob

(Page 7)

Filter insertion slot (Page 11)

#Always insert filters from

the left side!

AS centering screw (Page 9)

Aperture iris diaphragm (AS)

knob (Page 9)

REFLECTED LIGHT BRIGHTFIELD/DARKFIELD OBSERVATION PROCEDURE

}The following flow shows the basic operating procedure for reflected light brightfield or darkfield observation. The operating

procedures for polarized light and Nomarski DIC observations will be described separately in their descriptions. (The micro-

scope frame used is the BX51TRF.)

(Controls Used) (Page)

Select the brightfield (BF) or

darkfield (DF) observation. @ Mirror selector lever (P. 7)

Set the main switch to “ I ”

(ON). ² Main switch

Disengage the

analyzer,

polarizer, filter,

etc. from the

light path.

Check

interlocking of

the ND filter.

³ ND filter knob (P. 10)

Select the light path

(trinocular tube only). | Light path selector knob

Place the specimen on the

stage.

ƒ Stage plate

… X/Y-axis knobs

Engage the 10X objective in

the light path. † Revolving nosepiece

Bring the specimen in focus. ‡ Coarse/fine adjustment

knobs

Adjust the

brightness. Š Brightness control knob

Adjust the

interpupillary

distance.

Adjust the

diopter.

(Controls Used) (Page)

‰ Binocular tube

‹ Diopter adjustment ring

Adjust the aperture iris dia-

phragm and field iris dia-

phragm.

} Open both iris diaphragms

in case of DF observation.

Œ AS knob (P. 9)

™ FS knob (P. 7/8)

Engage the desired objective

in the light path and bring the

specimen in focus.

† Revolving nosepiece

‡ Coarse/fine adjustment

knobs

Insert the

required

filters.

š Filter insertion slot (P. 11)

Adjust the

brightness. Š Brightness control knob

Start observation.

BX-RLA2

}Make a photocopy of the observation procedure page and post it near your microscope.

Š‡…

‰

†

™

‹

Insertion from the left

USING THE CONTROLS OF BX-RLA2

1Selecting the Light Path (Fig. 1)

Slide the mirror selector lever @ toward the indication of the mirror for the

desired observation method.

BF: Reflected light brightfield observation

DF: Reflected light darkfield observation

# Be sure to slide the mirror selector lever until it contacts the stopper

position.

Fig. 1

Effects of Dummy Slider

The dummy slider ² has been installed on the revolving nosepiece at the

factory. It can be replaced by loosening the clamping knob ³ when a DIC

prism is to be used. However, in observations other than DIC, be sure to

push in the dummy slider in order to prevent flare.

Fig. 2

2Centering the Field Iris Diaphragm (FS) (Fig. 2)

1. Slide the mirror selector lever @ to “BF”.

2. Engage the 10X objective by rotating the revolving nosepiece, place the

specimen on the stage and adjust approximate focusing.

3. Pull out the FS knob ² on the reflected light illuminator to reduce the

aperture iris stop a little.

4. Rotate the two FS centering screws ³ using the Allen screwdriver to ad-

just so that the field iris image becomes concentric with the field of view.

5. While pushing in the FS knob ², open the field iris diaphragm until the

field iris image inscribes the field of view. If the image is found to be

eccentric, adjust the centering again.

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