HOZAN L-870 User manual

１
１
L-870
ZOOM LENS
Thank you for purchasing the HOZAN L-870 ZOOM LENS. With proper care
and handling, this fine instrument will provide years of trouble-free operation.
Please read this entire instruction manual carefully before attempting to place
this instrument in service. Please keep this instruction manual available for
reference.
Identification of parts
Specifications
Lens mount
Aperture
Weight
C mount
260 g
Minimum
Maximum
200
0.054X
0.54X
150
0.08X
0.8X
250
0.042X
0.42X
300
0.034X
0.34X
350
0.029X
0.29X
400
0.025X
0.25X
Magnification corresponds to working distance at intervals of 50 mm
Dimensions
Aperture ring
Zoom ring
Focus ring
Setting dot
INSTRUCTION MANUAL
C mount screw
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 serious injury.
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 a serious situation. Follow the instructions.

２
２
１
Remove the cap on the lens mount.
Then attach the L-870 to the camera
engaging each C mount.
Preparation
２
Arrange the surroundings for inspection such as connecting the camera
with the computer.
* See the instruction manual of the camera for connecting procedure.
There is the 50 mm mount base on the camera. Please remove this
mount base which will obstruct installation.
* See the instruction manual of the camera for details.
・
When using L-851 Full HD camera or L-834 Infrared USB camera.
For supporting
Surely hold by the camera side because
there is no device for holding this lens.
Use Hozan’s L-803 Flexible arm to support
the camera.
Using example
C mount
C mount
L-835
USB camera
L-803
Flexible arm
Using example
L-835
USB camera
Precautions
This zoom lens is for HOZAN’s cameras which have C mounts. Do not use
for any other purpose.
Caution

Operation
３
２
Bring the T (Tele) indication on the zoom ring
to the setting dot, to obtain maximum magnifi-
cation.
This time, set the aperture to 5.6. Images can
not be gotten if the aperture is closed.
Then, adjust the focus ring.
３
Obtain appropriate magnification, brightness and depth of field using
the zoom ring and the aperture ring.
Hint
The gotten magnification becomes high and the field of view becomes
narrow when the working distance is short, contrarily becomes low and
wide when the working distance is long. On every working distance 10X
zoom is effective.
Regarding magnification
Reason why focus at high magnification first
The range in which it is in focus is wide (=depth of field is deep) at low
magnification, and narrow at high magnification.
Focusing first at high magnification side makes images in focus can be
gotten at the whole area of zooming.
１
Adjust the working distance, from the structur-
al top of the L-870 opposite the object to the
object, between 150 to 400mm.
The optical magnification varies with working
distance. Refer to the magnification table on
page 1.
Setting dot
T (Tele)
Aperture 5.6
Working distance
Object

Option
18.10
４
L-803 Flexible arm
L-803
Holds the camera with the camera screw at its
top.
L-50-2 Lens filter
A protection filter with 46 mm diameter. Pre-
vents the camera lens from being soiled with
fume or splashing flux when soldering
L-50-2
L-835 USB camera
A camera with 5,000,000 picture elements.
Has a camera screw. Can be combined with a
arm and such. Also taken images and anima-
tions, image edited, and dimension measured.
L-835
1-2-12 Saiwaicho, Naniwa-ku, Osaka 556-0021, Japan
Tel : [phone] F a x : [phone]
Daily care
Lens
Blow away any dust with “134a Duster” or “Rubber Blower”. Or wipe away
gently with a soft cloth or a piece of gauze.
Clean away fingerprints or oil stains with a cloth which is lightly soaked in
denatured alcohol (such as ethyl alcohol or methyl alcohol).
*Alcohol is extremely flammable, so handle it with care.
Store in the case after attaching the cap provided onto the lens mount
when not in use.
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