INSTRUCTION MANUAL

L-461
Thank you for purchasing the HOZAN L-461 STEREO HEAD SCOPE (Zoom type). Withproper care and handling, this fine instrument will provide years of trouble-free operation.
Please read this entire instruction manual carefully before attempting to place thisinstrument in service. Please keep this instruction manual available for reference.

Identification of parts and contents
Accessories
Hex keys
Opposite size 2 mm
HolderEyepieceset screws
Holderset knob
Focus knob

Lock device forzoom adjust knob

Zoom adjust knob
Lens filterwith adapt ring

Head set screwSpecifications
Objectives

0.7-4.5X(zoom ratio 6.4)

Eyesight adjustment

Independent left and right, ±5 Dptr

Working distance

84mm (attaching lens filter w. adapt ring)

Focusing

Raise/lower stereo head (range 50 mm)

Stereo head type

45°inclined tube

Pupil distance range

54-75mm・left/right interlocking

Weight2.4kg

１

Optional parts such as
Eyepieces (L-546-10)
and Standard Table(L-462) or others arenecessary for using thisunit as a microscope.

Warning and caution symbols
These symbols are used throughout the instruction manual to alert the user to potential
safety hazards as follows :Warning … Notice when incorrect handling could cause the user's death or seriousinjury.
Caution … Notice when incorrect handling could cause injury to the user or material
damage.
Even if the instructions do not have Caution mark, there are some possibilities for aserious situation. Follow the instructions.

Precautions
 Warning
・Do not unnecessarily remove the stereo head or the holder from the post or the holder.
If it becomes necessary to remove them, hold them with both hands to prevent
dropping them and possibly causing injury to personnel.

 Caution
1. Do not disassemble or modify the L-461 yourself, otherwise this could causea malfunction.
2. Protect the unit against physical shock or vibration during transport. Otherwise, thiscould cause a malfunction.
3. Do not expose the unit to prolonged direct sunlight, high temperature, high humidity,or dust. Such exposure could cause a malfunction.

Note● Do not allow any dust or fingerprints to get on the lens and the lens filter, to getclear images. (Refer to “Daily care” on page 5.)

Preparation
First, make sure that the contents are complete.
the table sold separately on the１ Settle
inspecting place.
the holder at the low end on the２ Mount
post.
Turn toward the front, then securely
tighten the holder set knob.

２

Holder set knob

Preparation
Mount the head.

toward the front and secure the３ Turnhead set screw into any female screws,
right, left or front.

Head setscrew

Remove the cap from the objectives
４ andattach the lens filter accompanied by the adapt ring.

the caps from the barrels.
５ Remove
Then, loosen the eyepiece set screws

Objectives

Lens filter withadapt ring

Eyecup (short)and insert the eyepieces sold separately into the barrels.

Eyepiece
Eyepiece set screw
Setting dot

Drive the eyepiece set screws gently
so that the eyepieces stay and thesetting dot [・] of them, refer to thephoto, point at the zenith.
Please use eyecups (long) if necessary.
< How to attach the eyecup (long) >1. Remove the eyecup (short) .
2. Attach the eyecup (long) as sownin the illustration.

Eyecup (long)
Engage theprojection withthe groove.
Eyepiece

Choose to suit
Eyecup (short)・for persons in spectacles
Eyecup (long)・for persons in contact lenses or without spectacles
Bringing inspector’s cheekbones at eyecups (long) stables his/her eyepoints.
・for blocking the slanting rays

３

Operationagreed “0” of the graduation with each setting dot,
１ Be
refer to the photo, of both the eyepieces.

Setting dot

the eyepiece distance with your pupil distance to２ Adapt
view a single circle of the field.
The stereo barrels will rotate drawing arcs interlocking
with (refer to the photo).

an object just under the objectives.
３ Place
Prepare lighting apparatus such as Hozan’s L-711 LED LIGHT (refer to page 6) ifnecessary.

４ Adjust the zoom adjust knob to 4.5 maximum magnification.
for proper focus with the focus
５ Adjust
knob while looking with both eyes.

If the focus knob does not focus
enough, move the holder up anddown under loosening the holder set
knob.
Always aim the same point if the surface of the object is not simply flat,otherwise the working distance* could
differ from before and this could notcome into focus.
*Working distance means the dimension from the top of lens filter to theobject.

４.５

Holder set knob
Zoom adjustknob
Focus knob

０.７

 Caution
Loosen the holder set knob while supporting the holder with one hand when move it
up and down. Otherwise, the holder could fall down suddenly damaging the unit, theobject and the operator.

６ Adjust the zoom adjust knob to 0.7.
４

Operation
the image is out of focus, it is due to the difference of right and left eyesight.
７ IfFirst,
turn the draw tube for proper focus by looking with the dominant eye while
closing the other eye.
Then, adjust the other eyepiece similarly.
Proceed to procedure 8 if the image looking with both eyes is in focus.
If the image is still not in focus, adjust each eyepiece again.

Regarding “-” “+” of the graduation
A nearsighted person should turn to minus side and a farsighted person should turnto plus side.
Treat procedures 4 to 7 and check if the image is in focus.
８ Repeatthese procedures so that a clear image can be obtained whenever the zoom
magnification is changed.

putting a dust sheet on after use.
９ StoreTaking notes of sight adjust value can omit procedure 7 when the next work.

Adjusting the tightness of the focus knob
The tightness of the focus knob for vertical movement can be adjusted.
Turn the right focus knob counterclockwise while holding the left focus knob securely
to decrease the tightness, or turn it clockwise to increase the tightness.
*Do not loosen unnecessarily, otherwise the stereo head could suddenly slide
down.

Lock device for zoom adjust knob
The zoom adjust knob can be locked.
This is useful when a uniform magnification is required
e.g. using the measurement function of Hozan’s L-830
USB CAMERA, refer to bellow.
Insert the hex key 2mm provided into the opening, thenturn clockwise as the arrow indicated under the opening.
To release, turn counterclockwise against the arrow.
*Do not try to turn the zoom adjust knob under locked
state, otherwise this could cause a malfunction.

５

Related products
Use only the following optional accessories manufactured by HOZAN.

Lighting systems
L-711 LED light
The light has few fluctuations of brightness and no
flicker at all.

L-711

Various lighting systems can be used. Please refer to our catalog or web catalog.

Option lenses
L-546-10 Eyepieces (10X), standard
L-546-20 Eyepieces (20X)●●A pair per pack
With eyecups (long & short)* Eyecups (short) are attached when ship.

L-546-10

L-546-20

L-57-0.5 Conversion lens (0.5X)
L-57-1.5 Conversion lens (1.5X)
L-57-2.0 Conversion lens (2X)

Adapt ring

To install, first remove the lens filter, then replace
the conversion lens and lens filter. Do not remove
the adapt ring.

Conversion lensLens filter
The magnification, filed of view and working distance gotten
when combining eyepieces, objectives and conversion
lenses are follows.

Magnification table

Standard item
0.7-4.5X

ObjectiveNo

L-57-0.5

L-57-1.5

L-57-2Magni- Field of Working Magni- Field of Working Magni- Field of Working Magni- Field of Working
view distance fication view distance fication view distance fication view distance
mmφmmφmmφmmφ
Xmm
Xmm
Xmm
Xmm

Eyepiece fication
L-546-10(Standard)

745

28.54.4

L-546-20

1490

14.32.2

843.522.5

57.18.9745

28.54.4

160

10.5- 19.067.5
2.9
21135

9.51.5431490

14.32.2

28180

7.11.1

26*The “working distance” is the distance from the end of the filter to the subject.

L-846 Lens unit
L-846-3 Adapter
Connecting the microscope and a digital
camera with C mount, images of the full field
being seen actually through the microscope
are taken in high-definition.

６L-846

L-846-3

Daily careLenses●●Wipe away any dust gently with a soft cloth or a piece of gauze.
Clean away fingerprints or oil stains with a cloth which is lightly soaked in IPA ordenatured alcohol (such as ethyl alcohol or methyl alcohol).
＊ Alcohol is extremely flammable, so handle it with care.

Stereo head and plastic parts●●

Wipe with a soft, dry cloth.
Do not use any organic solvents such as thinner, alcohol or either.
When out of use for an extended period, store this unit in a dry dust-free place.

７1-2-12 Saiwaicho, Naniwa-ku, Osaka 556-0021, Japan
https://www.hozan.co.jp/E/
E-mail：th@hozan.co.jp

23.09