Vision Engineering TIM5 User manual

INSTRUCTIONS

NMM-800RF∕ TRF

SYSTEM METALLURGICAL

MICROSCOPE

TIM5 User Guide

Material Inspection Microscope

1

Contents

USER NOTICE 2

1. Components 3

2. Assembly 4

3. Operation 9

4. Observation Methods 16

5. Troubleshooting 18

2

User Notices

I. Safety note

i. When unpacking, please take care not to drop fragile items, such as lenses.

ii. Keep the instrument out of direct sunlight; avoid high temperatures or humidity, dusty environments. Make sure the work

surface is stable and away from sources of vibration.

iii. Take care when moving the instrument, using two hands to grip with the sides of the microscope body.

iv. Caution! The lamp house and nearby parts will be very hot during operation. Ensure sufficient space to allow cooling.

v. Before replacing the halogen lamp, or fuse, make sure the main switch is in the “O” (off) position, and turn off the mains

power. Allow the lamp bulb and lamp house completely cool before removal.

vi. Use the factory supplied power cord.

II. Maintenance

i. Do not disassemble any parts of the microscope, as it will affect function, or reduce the performance.

ii. Keep the instrument clean and cover with a dust cover when not in use. Remove dust with a lint-free cloth. Take care to

avoid contaminating the optical elements.

iii. Marks on the prism, such as finger marks or oil should be removed by gently wiped with a piece of lint-free cloth immersed

in pure alcohol or xylene (NOTE: alcohol and xylene are highly flammable. Keep away from heat sources and use them in a

well-ventilated room).

iv. Do not use organic solvent to wipe the non-optical elements.

v. Place the instrument in a cool, dry environment. After using the microscope, cover with a dust cover.

Wait for the lamp house to cool completely before covering.

3

Name of Components

Light path selector lever

Analyser insertion slot

ND filter lever

Polariser insertion slot

Aperture diaphragm lever

Field diaphragm lever

拉杆

Main switch

Brightness adjustment knob

Right fine focus knob

Mechanical stage

X/Y stage movement

Lamp housing

Trinocular tube

Filter insertion slot

(The filter should be inserted from the left)

Right coarse focus knob

Mirror selector lever

4

2．Installation

2-1 Installation Diagram

The following figure shows the installation sequence of the components. The number in the figure shows the installation steps.

 Before installing, be sure every component remains clean.

 Note: The supplied Allen key is required for changing components.

Trinocular tube

Trinocular head

10x wide-field

eyepiece

Lamp

housing

Reflected light brightfield /

darkfield illuminator

Infinity plan objectives

Infinite Plan Objective

Mechanical stage support

①

⑤

⑥

③

⑦

④

②

5

2-2 Installation Steps

2-2-1 Installing the mechanical stage support

Before installing the device, be sure to adjust the coarse focus

control ①. Move the guide board ② down to the lowest

position, so you can install the mechanical stage support device

easily.

Hold on to the mechanical stage support device (Fig.2). Place it

from the top of the guide board (Fig.1), until the stage reaches the

lowest position. Use the Allen key provided to secure the stage

③.

 The mechanical stage ⑤ has been adjusted before

leaving factory. Do not disassemble.

Assembled parts should look like Fig.3.

Fig.2

⑤

③

④

Fig. 3

Fig.1

②

①

6

2-2-2 Installing the reflected light brightfield /

darkfield illuminator

Install the reflected light illuminator (Fig.4) on the head of the

microscope body (Fig.5) and then secure the bolt ⑥.

2-2-3 Installing the trinocular head

Insert the video port (Fig.6) into the illuminator (Fig. 4), and then

secure the bolt.

2-2-4 Installing the objective

1. Adjust the coarse focus knob until the support device of the

mechanical stage reaches its lower limit position.

2. Place the lowest magnification objective onto the nosepiece

from the left or the right side and then push the nosepiece

clockwise. Then place other objectives in the sequence of low

to high magnification (Fig.7).

 When replacing the objective, slowly turn the

nosepiece until you hear a “click”. The objective will

now be in the required position-(the centre of the

light path).

Fig.5

⑥

Fig.6

⑨

Fig.7

⑦

⑧

Fig.4

7

2-2-5 Installing the Trinocular tube (optional)

Insert the video port (Fig. 8) into the trinocular unit (Fig. 6), and

then screw down bolt ⑨ to fix it into position.

2-2-6 Installing the Eyepiece

Insert the eyepieces (Fig.9) into the eyepiece tube until they are

flush with one another, ensuring the edges meet.

2-2-7 Installing the Lamp Housing

1. Gently push the lamp holder (Fig.10) into the illumination kit

(Fig. 4) turn it to the correct position, and then screw down

bolt ⑧ to fix it into position.

2. Insert the power plug ① into the jack socket ②, and screw

in the bolt.

 Remember to remove the dust cap before you use

the transmitted light illuminator. Attach the lamp

holder (Fig.10) into the jack socket on the back of

the microscope (Fig.11) taking care when moving

this object into position, and then secure bolt ④.

Insert the power plug ① into the power jack of the

microscope ③, and screw down the bolt to fix it into

position.

Fig.8

Fig.9

Fig.10

①

Fig.11

②

③

④

8

Fig.13

①

②

Fig.14

③

④

Fig.15

2-2-8 Attaching the Halogen Bulb

The appropriate lamp bulb is: 24V100WHAL.

1. Loosen the clamping screw ① at the top of the lamp housing

using the provided Allen key.

2. Lift the lamp housing ② to remove it.

3. Tilt the bulb socket by 90°(Fig. 14)

4. Remember to wear gloves or use a piece of gauze

when handling halogen bulbs. Push the bulb clamping

levers down, and take care while you insert the bulb pins into

the socket as far as they will go.

Then return the bulb clamping lever gently back to the original

position.

Caution!

– DO NOT replace bulb during or directly after use

Be aware that during use and directly after the equipment has been

turned off, the lamp, the lamp housing and nearby parts will be

very hot and could cause serious burns. Please make sure the main

switch is turned off “O” (off), and pull out the power cable. Make

sure the bulb, the lamp housing are cool before you start replacing

the bulb.

 Please insert the lamp gently, or it will be damaged

by excessive extrusion.

 Do not touch the Halogen bulb with your bare hands.

It will shorten the service life or cause it to burst. If

you leave finger marks on the surface, clean it with a

dry soft cloth.

Please pay attention to the warning signs. The

temperature of the lamp housing surface will be very

hot, and can cause serious damage.

9

3. Operation

3-1 Turning on the Lamp

Connect the power cable and turn the main switch ① to the “I”

(on) position.

 When using transmitted light illumination, fix the

lamp holder into the jack on the back of the

microscope (Fig.11), and insert the power plug into

the power jack of the microscope (③in Fig.11). Then

turn the main switch ① to the “‖” (on) position.

3-2 Adjust Brightness

To adjust the brightness, turn knob ② clockwise to increase the

voltage therefore increasing the illumination; and turn

anti-clockwise to turn down the voltage and dim the light.

 Using the lamp at low voltage, will prolong the life

of the halogen bulb.

3-3 Adjusting the Tension Adjustment Collar

 The tension adjustment collar was adjusted before

leaving the factory, if you find it loose or if the

mechanical stage drops by itself because of weight,

please use the tensioning adjustment tool and adjust

the collar ③ until the tightness is corrected.

Fig.16

①

②

Tensioning

adjustment tool

③

Fig.17

10

3-4 Placing Specimens

1. Fix the specimen ② onto the sample slide ① using

modelling clay or plasticine ③; make sure that the specimen

surface is parallel to the sample slide. It may be necessary to

use a levelling press to flatten the specimen (Fig. 19)

2. Place the slide on the mechanical stage. Use the stage clips to

gently clamp the slide.

3. Move the specimen into position by using the horizontal and

vertical adjustment controls of the mechanical ruler.

 Caution – When changing the objective; be aware of

your working distance and do not allow the

objective to touch the specimen. This could cause

damage to the lens.

3-5 Adjusting the Interpupillary Distance

The interpupillary distance range between: 48mm ～75mm. Make

sure when you are viewing a subject that the left and right fields of

view coincide with each other. To adjust the FOV (field of view) use

the left and right prism barrels. See Fig. 28 to clarify.

3-6 Adjusting the Dioptre

After you have achieved focus with the right ocular, but your left

ocular is out of vision, this can be adjusted by turning the left

dioptre ring (Fig.21), as the right ocular tube is fixed. This should

achieve a comfortable focus for both eyes.

Fig.20

图18

Fig.18

①

②

③

Fig.19

Levelling

press

Fig.21

Dioptre

adjustment ring

11

3-7 Focus

Using the scope without the video function

1. Completely lower the light path selector lever (① in Fig.22) to

view. It is recommended that you begin with the 10x

objective, to avoid contact with the specimen. Begin with the

mechanical stage raised close to the objective and slowly

lower the stage to obtain the best focus.

2. The operator can use the coarse focus control to lower the

specimen whilst viewing at 10x, then the user can adjust the

fine control to focus more clearly on the object. At this point

the user can change the objective to a higher magnification

without the risk of damaging the specimen.

Using the scope with the video function

Pull up the light path selector lever (① in Fig.22), when the image

is sharp, you can see the picture directly on the video screen which

is connected by the microphotograph system through the video

mount.

 If you need to move the stage to a vertical position

to view a specimen please use the locking set (② in

Fig.23).

①

Fig.22

Fig.23

②

12

Fig.24

Fig.26

②

④

Usable Filters

Applications

Colour temperature

conversion filter

Turns the illumination light into daylight. Used in general

observations and colour photography.

Green filter

Enhanced contrast in monochrome observation. Used in

monochrome photography

Yellow filter

Contrast filter for observation of semiconductor wafers

Frost filter

Reduces irregularity in the illumination field, but also

reduces the brightness

ND25

Adjusts the brightness of the light source.

(Transmittance: 25%)

ND6

Adjusts the brightness of the light source.

(Transmittance: 6%)

3-8 Using the ND Filter Knob

The ND Filter is interlocked with brightfield (BF) light path. It can

be switched from engaged to disengaged according to the mirror

selector lever (① in Fig.25). You can reduce the glare with the ND

filter when you switch from darkfield (DF) to brightfield (BF).

Releasing interlocking

 The ND filter control has been locked at the factory – but if

you find that the brightness is not enough during brightfield

or DIC, then the interlocking can be released.

1. Loosen the screw interlocking the ND filter by inserting the

Allen key into the hole ②-Fig.26 on the left side of the

reflected light illuminator.

2. The interlocking is now released and the ND filter knob (Fig.

17) is active. Pull the lever out to disengage the ND filter from

the light path.

3-9 Using the Filters

 Utilise the two filter slots to optimise your observations ④

-Fig.26. Be sure to engage from the left hand side only.

 When you insert a filter there are two positions – the first

‘click’ is the idle position and the second ‘click’ engages the

filter into the light path.

③

①

Fig.25

13

3-10 Selecting the Light Path of the trinocular Tube

1. Slide the mirror selector lever ①–Fig.27 towards your desired

observation method.

BF: Reflected light brightfield observation

DF: Reflected light darkfield observation

 Make sure the selection lever is fully engaged into position.

3-11 Centring the Field Iris Diaphragm (FS)

1. Slide the mirror selector lever ①-Fig.27 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 ④-Fig.27 on the reflected light illuminator

to reduce the aperture iris diaphragm.

4. Rotate the two FS centring screws ②-Fig.27 using the Allen

key to adjust so that the field iris image becomes concentric

within the field of view.

5. While pushing in the FS control ④-Fig.27, 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 centring again.

6. Open the field iris so that its image is almost the same size as

(Fig. 28) the field of view.

Using the Field Iris Diaphragm

Observations in reflected brightfield light

 The field iris diaphragm adjusts the illuminated area to obtain a

high contrast image.

 Depending on the object in use, adjust the FS control ④-Fig.27

of the reflected light illuminator until the iris image

circumscribes the field of view to block any unnecessary light.

Observations in reflected darkfield light

 The field iris diaphragm must be opened by pushing in the FS

control.

①

②

③

④

⑤

Fig.27

Fig.28

Field iris diaphragm image

阑图象

Field of view of

eyepiece

14

3-12 Centring the Aperture Iris Diaphragm (AS)

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. Remove the eyepiece, look into the eyepiece sleeve and pull the AS

knob (⑤ in Fig.27), so that the aperture is about 70% open.

4. If the centre of the iris diaphragm is deviated, centre it by rotating

the two AS centring screws (③ in Fig. 27) using the Allen key.

Using the Aperture Iris Diaphragm

 When observing using the reflected light brightfield function,

optimum observation is possible by setting the aperture to

between 70% and 80% of the aperture number of the objective

(Fig.29).

 When observing using the reflected light darkfield function, the

aperture must be fully opened by pushing in the AS knob.

 With some specimens, an image with high contrast and little flare

may sometimes be obtained when the aperture is slightly closed. It

is therefore recommended to also try a slightly closed aperture.

3-13 Setting the Analyser and Polariser

1. Insert the polariser (Fig. 30) into the polariser Insertion Slot ③

(Fig.31) make sure the surface printing with Silk Screen is facing

towards you, and then push the polariser into the light path.

2. Remove the cover, and then put the analyser (Fig.30 in the

insertion slot ② in Fig.31).

3. Rotate the ‘analyser rotating dial’ (① on Fig.30) to find the

position where the field of view is darkest.

4. When the analyser and polariser are coupled by using the coupling

plate (Fig.30) provided with the polariser and tightening the

clamping knobs on it, the analyser and polariser can be engaged

or disengaged in the light path together (Fig.31).

Fig.29

The image of aperture iris diaphragm

①

Fig.30

Polariser

Coupling plate

Analyser

Fig.31

②

④

③

15

3-14 Adjusting the Swing out Condenser (Fig. 32)

The centre of the condenser and the light axes of the objective are

coaxial. This has been adjusted before leaving factory, so the user

doesn’t need to adjust them.

The condenser has been adjusted to its highest setting. It does not

require the user to manipulate this feature.

To move the condenser, please use the ‘condenser focus control’.

When using the high magnification objective, make sure the condenser

is raised; similarly, if you’re using a low magnification objective make

sure the condenser is lowered.

1. Using the Swing out Condenser

2. When using the low magnification objective, make sure the

condenser is away from the light path. While using the high

magnification objective, make sure this is in the light path.

Adjusting the Aperture Diaphragm

The aperture diaphragm is designed for the adjustment of the

numerical aperture, not for the brightness. Generally, reducing the

diaphragm opening to 70 - 80% of the N.A. value of the respective

objective will provide an image of acceptable quality. If you want to

observe the image of the aperture diaphragm, remove one eyepiece

and look through the tube. You will see a dark circle encroaching on

the bottom of the tube.

3-15 Adjusting the Field Diaphragm (Fig. 33)

The control for the field diaphragm is a ring used for adjusting the area

of field diaphragm. When using, turn the ring to reduce the field

diaphragm, look into the field, if the diaphragm image is faint,

complete the follow steps: turn the condenser focus knob, shift the

condenser holder to the position where the observed image in the field

of view is sharp; then open the field diaphragm, let the image fill the

field of view, then reduce the mixed light, which should improve the

quality of the image.

Fig.32

Fig.33

16

4. Observation Methods

4-1 Reflected Light Brightfield/Darkfield Observation

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

1. Select the brightfield (BF) or darkfield (DF) observation (see Mirror selector lever)

2. Set the main switch to “I” (ON)

2.1. Disengage the analyser, polariser, filter, etc. from the light path.

2.2. Check interlocking of the ND filter

3. Select the light path

4. Place the specimen on the stage.

5. Engage the 10X objective in the light path.

6. Bring the specimen into focus.

6.1. Adjust the brightness.

6.2. Adjust the interpupillary distance.

6.3. Adjust the dioptre.

7. Adjust the aperture iris diaphragm and field iris diaphragm.

Open both iris diaphragms in case of DF observation.

8. Start observation.

17

4-2 Reflected Light Simplified Polarised Light Observation

1. Set the Analyser and Polariser (Fig. 15).

2. Place the specimen on the stage and adjust the focus by moving the stage up or down. Now simplify the polarised light

3. You can now observe the specimen.

4. Adjust the field iris diaphragm so that the image fills the field of view.

5. You may need to close the aperture iris diaphragm slightly to enhance the contrast.

4-3 Transmitted Light Observation

1. Installing the lamp housing (see page 8: Installing the lamp housing when using transmitted light illuminator).

2. Install objective.

3. Install the swing out condenser.

4. Set the main switch to “II” (ON).

5. Fix the specimen on the stage; adjust the focus then you may begin the observation.

18

5. Troubleshooting

5.1 Optical Parts

PROBLEM

REASON FOR PROBLEM

SOLUTION

Light is on but the field of view

is dark.

The aperture or field iris diaphragm is

closed.

Open the aperture and field iris diaphragms.

Light path selector control of trinocular tube

is positioned incorrectly.

Fully pull out the light path selector control.

Mirror selector lever is in an intermediate

position.

Set the control correctly.

Field of view is obscured or not

evenly illuminated.

Light path selector knob of trinocular tube is

in positioned incorrectly.

Set the light path selector control to a ‘click’ position.

Mirror selector lever is in an intermediate

position.

Set the control correctly.

Revolving nosepiece is not in a ‘click’

position.

Set it into the ‘click’ position.

Field iris diaphragm is not centred.

Centre the field iris diaphragm correctly and make sure it is

sufficiently open.

ND filter is not in a click position.

Set it into the ‘click’ position.

Bulb is not installed correctly.

Make sure the halogen bulb is in the correct position and

touching both terminals.

Analyser and/or polariser not installed

correctly.

Engage analyser and polariser in light path.

Dirt or dust is visible in the field

of view.

Dirt/dust on eyepiece.

Clean thoroughly with a lens cloth or lint free cloth.

Dirt/dust on specimen.

The image is out of focus /

low-resolution

Revolving nosepiece is not in a ‘click’

position.

Set it into the ‘click’ position.

The objective lens has been contaminated.

Clean thoroughly.

Dirt/dust on specimen.

One side of image is blurred.

Objective is not correctly engaged in light

path.

Make sure that revolving nosepiece clicks into place

correctly.

19

5.2 Mechanical Parts

PROBLEM

REASON FOR PROBLEM

SOLUTION

The coarse focus control is hard

to turn.

The tension adjustment collar is too tight.

Loosen the adjustment collar.

Pre-focusing lever is locked.

Release pre-focusing lever.

Stage lowers by itself or focus is

lost during observation.

Tension adjustment ring is too loose.

Tighten ring to an optimum tightness.

Specimen cannot be brought

into focus.

Stage height adjustment is too low.

Raise stage holder height.

Image shifts when you touch

stage

Stage is not properly mounted.

Clamp stage.

Specimen moves easily.

The slider holder is not fixed sufficiently.

Fix it securely.

Field of view is not the same in

both eyes.

Interpupillary distance is incorrect.

Adjust the interpupillary distance.

The eyes tire easily.

Incorrect adjustment to the dioptre.

Adjust dioptre correctly.

Image is too bright.

Adjust the bulb voltage.

5.3 Electric Parts

PROBLEM

REASON FOR PROBLEM

SOLUTION

No illumination.

No power supply.

Check the power cord.

Incorrect installation of the bulb.

Install the bulb correctly.

The bulb has blown.

Change bulb.

The connection of the lamp housing power

plug is incorrect.

Review instruction and check connection.

Bulb frequently burns out.

Incorrect bulb installed.

Use the specified bulb.

Insufficient light intensity.

Incorrect bulb installed.

Use the specified bulb.

Flickering light.

The bulb is going to blow.

Change the bulb.

The power cord has a poor connection.

Check the power cord.

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Vision Engineering TIM5 User manual

Vision Engineering TIM5 User manual

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