BestScope BS-3070 User manual

Wide Field Microscope
BS-3070
Instruction Manual
BS-3070A BS-3070B BS-3070C BS-3070D
This manual is written for stereo microscope BS-3070A,B,C,D. To ensure the safety, obtain
optimum performance and to familiarize yourself fully with the use of this microscope, it is
recommended strongly that you read this manual carefully before using the microscope. Retain
this manual in an easily accessible place near the work desk for future reference.

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CONTENTS
Attention .............................................................................................................. 2
Ⅰ.Uses ................................................................................................................. 4
Ⅱ.Principle and Structure .................................................................................... 4
Ⅲ.Main Specification ........................................................................................... 5
Ⅳ.Operation ........................................................................................................ 5
Ⅴ. Instrument Outfit ............................................................................................ 7
Ⅵ. Maintenance .................................................................................................. 8

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Attention
1. NO disassembling and uninstall.
It is easy to get an electronic shock and damage the instrument if disassemble and uninstall
freely. Please do not disassemble and uninstall any other accessories freely except that the
instruction mentions they could be disassembled and uninstalled.
2. Check the voltage.
1) The fixed input voltage is marked on the microscope base. Please attention that the local
voltage supply must be accord with it. Or else dismantle the base by the experienced professional,
adjust the power switch marking 110V, 220V to be in accordance with the local voltage, and then
install the base; or you can also contact the factory directly. The microscope must be used within
the rated voltage, otherwise it would be damaged badly.
2) The power socket should have earth wire.
3. Anti-Fire and Scald.
1) During illumination, the bulbs and the illuminator are easy to get hot. Attention not to touch
them in order to avoid hurting the skin.
2) Change the bulb must after it is completely cool down.
3) The easy-burning substance must be kept away from the bulb in order not to get burn.
4. Change Lamp.
1) Before change the bulb, switch off the power supply and pull out the plug of electrical wire
to avoid getting an electrical shock and damaging the instrument.
2) Use the specific halogen bulb, 12V20W or LED lamp.
3) Change the bulb with gloves or wrap the bulbs with the protective cover. Don’t touch the
glass of the bulb directly. Then erase the fingerprint and spots with the alcohol. Otherwise the bulb
is easy to get split and weaken the brightness.
5. Move and Dispose.
1) Switch off the power supply before move the instrument.
2) Moving and disposing environment requirement:
a) Environment temperature:- 40°C～+55°C.
b) The maximum relative humidity: 95%.
3) Avoid disposing the instrument in the sun or the room lights. The bright environment will
affect the quality of the image.

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4) Don’t dispose with dirt around. When not use, cover it by dust cover.
5) The place must be shaking-proof when dispose.
6. Working Environment.
1) Indoor temperature: 0～40°C.
2) The maximum relative humidity: 85%.
3) Running mode: continuous.
7. Operating Carefully.
1) The microscope is a sophisticated and precise optic instrument. Shaking heavily and
operating rigidly will damage the instrument badly. Don’t reverse the left and right coarse focusing
knob. Otherwise the focusing will lost its precision.
2) Don’t touch the surface of the optic accessories or else the image would not be clear.

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Ⅰ. Uses
BS-3070 is a new type of microscope with a special wide field of viewing. It can form a clear
and sharp image with a strong stereo sense of sight, be comfortably viewed and conveniently
operated. It is widely used in all kinds of fields such as biology anatomizing. electronic industry,
mineral investigating, cultural relic restoration and so on.
Ⅱ. Principle and Structure
1. Optical Principle:
After the object formed an image by the objective, the bundle of imaging rays is divided into
two proportion, respectively passing through two reflectors with spherical reflecting surface,
then forming an enlarged, upright virtual image viewed by the eyepiece.
2. Instrument Structure:
(1) ’G’shape clamp (2) tightening screw (3) Stand

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(4) Screw cap (5) joint dowel (6) dust proof cover
(7) Knob for adjusting the interpupillary distance
(8) Main body (9) Knob for adjusting illumination
(10) Objective (11) Nosepiece (12) Protective baffle
Ⅲ. Main Specification
1. Eyepiece:
2. Objectives: standard: 2×,4×,6×, optional: 8×,10×, 15×, 6×(SL)
3. Characteristic:
Objective
Magnification
Working distance
(mm)
Field Of Viewing For
Object Space(mm)
2× 208 68
4× 98 34
6× 80 22.7
8× 58 17
10× 46 13.6
15× 50 9.1
6×(SL) 115 22.7
4. Illumination:Input voltage:AC110V-AC220V
Output: (1) Standard: LED lamp (1pc)
(2) Optional: 12V20W halogen lamp with cup (2 pcs.)
Ⅳ. Operation
1. Installation:
Take out the stand (3) from the packing box and fix it on the worktable by the ‘G’ shape clamp.
Take out the main body (8) from the other package and secure it on the stand (3), using the joint
dowel (5) and screwing the screw cap (4) tightened. Then put the dustproof cover (7) in place on
the main body (8) Turn the main body to a proper position for viewing and tighten the tightening

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screw (2), then mount the objectives onto the nosepiece.
2. Mounting and changing the lamps:
Before using the microscope, please first mount the lamps. Gently press the finger-shape
protrusion on the protective baffle (12) and take out the protective baffle (12) from the
illuminating hole, insert the lamp straight into the socket as far as it will go. Only use halogen
lamps of the specified rating. Replace the protective baffle (12) , Do not touch the glass part of a
lamp with your bare hands as your fingerprints may stick to the lamp, possibly reducing its level of
light output or causing damage to the lamp.
When changing the lamps, please pull down the plug of the electrical wire before changing it.
Change the lamp after it is cool enough. Press the finger-shape protrusion on the protective baffle
(12) lightly and take out the protective baffle (12) from the illuminating hole. Replace the bulb with
the new one; then remount the protective baffle (12) into the illuminating hole. During changing
the bulb, note not to directly touch the glass portion of the bulb and the protective baffle by hand
but to wear glove or use sheath. After finishing, wipe off the fingerprint and smudge on the glass
with the soft clean cloth dampened with absolute alcohol. Otherwise the bulb is easy to get split
and weaken the brightness of the whole illumination system.
3. Checking the input voltage:
The rated input voltage is indicated in the electric nameplate attached to the back of the arm.
In the case of the voltage of the local power supply according with the rated value, connect up the
power supply. The electric socket must have earthing.
4. Adjusting the illumination:
The illumination consists of a LED lamp or two halogen lamps with cup which form an angle
tilting each other. Rotate the knob for adjusting the illumination (9) to change the angle tilting each
other so as to get the ideal condition of illuminating.
5. Selecting the objectives magnification:
The microscope is equipped with various objectives for 2×,4×,6×magnification. The objective
with the lower magnification takes on the larger field of view and depth of field. In order to find
the object easily, advise to use first the lower magnification objective; then rotate the nosepiece
for 120 degree to change the objective magnification.
6. Adjusting the interpupillary distance:
According to the interpupillary distance of viewers, rotate the knob for adjusting the interpupillary

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distance (7) to assure that the beams emerging from the microscope coincide with the eyes of the
viewer. The the images in the left eye and right eye of the viewer concentrate into a sharp image.
7. Focusing:
Viewing the object by the eyepiece with uplifting or driving down the main body gently, then
get a clearer and sharper image. Rotate the knob for adjusting the interpupillary distance (7) to
make the beams from the microscope coincide with the pupils of the viewers, and then get an
ideal magnified image.
Ⅴ. Instrument Outfit
Component Name Quantity
Main body 1
Stand 1
‘G’ shape clamp 1
Objectives
2× 1
4× 1
6× 1
LED lamp 1
0.5A fuse (spare) 1
Lens paper 1
Instruction manual 1
Packing list 1
Inspection certificate 1
Optional accessories: 8×,10×,15×, 6×(SL) objectives

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Ⅵ. Maintenance
1. Not using the microscope:
Pull out the plug of power supply wire and cover the instrument with the dust proof cover,
then keep it in a dry and cool place.
2. Cleaning the lens:
Don’t touch the optical parts by hand.
Had better clean out the dust with the soft brush or gauze.
For stubborn smudge, such as fingerprint and lipid, etc, gently wipe it off with the clean soft
cloth or lens paper dampened with the mixture of absolute alcohol and ether.
3. Cleaning the plastic surface and metal paint surface:
Don’t use any diluter (such as thinner, etc.) to clean the surfaces. If there are some smudges on
the surfaces, wipe it off by the gauze. For the obstinate smudges, suggest using the soft
cleanser to clean.
For the plastic surfaces, only can use the soft cloth dampened with water to clean. With the
technology development, we maintain the right to do some improvement. So the book can not
completely express the machine characteristic.