OPTO-EDU A18.1825-LCD User manual

A18.18 25-LCD

LCD Comparison Microscope

Instruction Manual

To ensure the safety and obtain satisfactory performance, please study this instruction manual thoroughly be

fore start to use the instrument.

I.Features and Uses

Though optical enlargement, this comparison microscope ,can help the user to

observe clearly, by looking into the same eyepiece set, the images in both the right

and the left imaging view fields, and compare two or more objects effectively in

cutting, joining or overlapping view fields. Due to its powerful magnification, this

instrument enables the user to perceive the differences between very small similar

objects.

Model A18.1825-LCD Comparison Microscope is a new generation product of

our long-time experience and technical innovation. With our success in solving the

technical problem of the adjustability of its separation line width, its quality has,

therefore, reached the international advanced standard.

This model is an ideal instrument for police stations, procuratorial organs and

courthouses to identify finger prints, shot marks, tool traces, seals and writings, and

for colleges and universities to use for educational purposes as well. It is also suitable

for banks, archeological studies, electronics researches, biological science and

agriculture, etc.

II.Technical Parameters

10X 20X

Photo

-taking

Video

-recording

Working

Distance

Objective Bridge Body

0.8X

1.2X

9.6X/φ28 19.2X/φ17

1.92X

～12X

Actual

Measured

Value

102mm

1.25X 15X/φ18 30X/φ11

2X 24X/φ11 48X/φ7

3.2X 36X/φ7 77X/φ4.5

4.8X 58X/φ4.2 115X/φ2.3

0.4X(attached objective) and 0.8X objective、10X eyepiece combination, general

amplification pow

er 3.8X, ocular imaging view field

60mm.

Eyepiece

Mag./Viewfield

Fig.1

1. Switch (options)

2. Light source changeover switch

3. Light adjusting knob

4. Control panel

5 .Total switch

6. Y-axial movement knob

7. X-axial movement knob

8. Stage plate

9. Course adjusting focus knob

10. Horizontal linkage knob

11. Magnification changeover knob

12. Separation line adjusting knob

13. Binocular head

14. Photography tube

15. Camera (options)

16. Video recording tube

17. Lever

18. Magnification correcting Knob

19. LED light source

20.12V/50W Strong light source

21. Working table lifting knob

22. Analyzer

23. Polarizer

24. Coaxial light

25. 0.4X objective

26. Green filters

27. Red filters

28. Magnification reticle

III. Assembly and Preliminary Observation

1. Loose the clamping screw, take off the dust cover, fix up the binocular

head(13),and then clamp it with this screw;

2. Remove two dust covers from the binocular tubes, insert the required eyepieces

into the tubes;

3. Plug one end of the power line into the socket on the base, the other to the socket

with 110V-220V ground protection;

4. After the above steps are completed, you can carry on preliminary observation.

Place two pieces of paper on the stage plates(18), press the total switch to turn

on this instrument, and drive the knob (9 ), observe this paper’s images through two

eyepieces, and then drive left or right lifting knob(21) until observe the sharpest

images.

In order to acquire more better effect, you must know further this instrument’s

functions.

Ⅳ.Functions and Operations

1.Turn on total switch (5), according to your demand , press the light source

changeover switch to select 12V50W strong light source(20) or LED cold light

source(19).

2.View-speed adjustment : Fix up eyepiece, drive binocular head(13) to adjust

interpupillary distance, shown as Fig.2

Fig.2

3.Horizontal working table: Place some specimen on two table plates, separately

drive left and right lifting knob(21) to keep the image clear. For moving left and right

the stage, rotate the knob(7); for moving forward and backward the stage , rotate the

knob(6).

4.Adjustment of separation line: The separation line should be a fine and black

straight one. Turn the separation line adjusting knob(12) to move the separation line,

you may get the left and right single viewfield observation, cutting-image and

superimposed-image comparison. When black and white line are wider , rotate the

black screw at the right of the knob(12), when width are not identical , rotate the

black one at the left of the knob(12). The two black screws are located at the back of

the instrument.

Fine and black Wider black line Width are not identical

Straight line and white line

Fig.3

5. Magnification Adjustment: For in use, both left and right objective should be at

the same magnification . To rotate the magnification changeover knob (11) to

select the required magnification. In order to observe a large viewfield, set 0.4X

low-magnification objective to the whorl (at the downside of objective) and

then renew focusing .

Fig.4

To order to keep both left and right objective at the same magnification, the

operator must make focusing by the following methods : separately place the

magnification reticles(28) on two table plates, and view them through eyepieces until

two reticles’ scale can completely coincide . If the left and right scales are not

matched , turn the magnification correcting knob until the reticles’ images are

sharp , and then move the reticles to keep two reticles’ scales completely coincide.

Repeat several operations , you may make sure that both left and right objective are at

the same magnification . When change the objective’s magnification, make some

adjustment according to the above methods.

6.Bullet holder : shown as Fig.5

To observe breech-face markings To observe bullet profile

To observe the bottom of cartridge To observe cutting trace

To observe large cartridge case To observe irregular object

Fig. 5

7.Video recording: For video recording , fit up video recording tube(10), on which

the CCD (11) is fixed, and then use special video wire, connect to monitor(or

computer), push in the lever, the operator may observe an image on screen.

8. Photographing: After finishing visual observation, draw out the lever for

photographing. Fit the back of camera into the adapter(12), and then insert to the

instrument. Observe the object through viewframe , adjust both left and right stages

to obtain a satisfying image, and then take a photo.

9.Polarization Light : Insert polarizer to the chamber of strong light mount , set

analyzer to objective tube, shown as Fig.6

Fig.6

10.Coaxial Light : Set coaxial light device to objective tube , adjust strong light

mount to the horizontal location , and vertically illuminate the deep hole, if observe

the inside of hole , incline the table plate.

Fig.7

11.Power source: All electric parts are built into the base of instrument. If there is

some wrong with the instrument , firstly check the fuse at the back of base. Any

further examination or repair which might become necessary should be entrusted to

our factory or other special department.

Ⅴ. Maintenances

1. The instrument must be kept in shade ,cool and dry place ,free of dust ,acid ,alkali

and vapor. As soon as work is finished , the dustcover should be put on it.

2. The instrument must be kept clean. The dust of optical surface can be blown by a

balloon or should be cleaned off with a soft hair brush, the dirty can be wiped off

gently with lens tissue moistened with xylene.

3. The instrument should not be disassembled by the user .Any examination or

repair which might become necessary should be entrusted to our factory or other

special department.

A18.1825-LCD Comparison Microscope

Packing List

Mainbody 1 pcs Video recording tube

1 pcs

Binocular head 1 pcs Photography tube 1 pcs

10X Eyepiece 2 pcs Camera adapter 1 pcs

20X Eyepiece 2 pcs 12V50W

halogen lamp

2 pcs

Polarizer 2 pcs LED Light 2 pcs

Analyzer 2 pcs Power cable 1 pcs

Red ,yellow,blue,green and

violet Filter

2 pcs/each Fuse 1 pcs

0.4X Objective 2 pcs Fittings case 1 pcs

2X Objective 2 pcs Dustproof cover 1 pcs

Coaxial light device 2 pcs Certificate of quality 1 pcs

Bullet holder 2 pcs Operating Introduction 1 pcs

Magnification reticle 2 pcs

9.7” Pad Camera 1set 1set

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