IRVI ABRIS M series User manual
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Manual
ABRIS M series
M1300 M1700 M2000
Infrared viewers
Contents About
High performance image conversion viewers are designed to
view a light of laser sources, which emit light in near infrared
zone in 350-2000 nm spectral region.
Viewers are used to observe indirect radiation of IR lasers,
Light emitting diodes (LED’s),dye and other IR-sources. It is
ideal for IR-laser beam alignment and inspection, optical fibre
alignment, telecomunications, photo processing, surveillance
and investigation in botany, biophysics, medicine, forensics
and art restoration, infrared microscopy, fluorescence etc.
This device allows viewing continuous lasers radiation as well
as pulsed lasers radiation with pulse duration from ps to μs
without synchronization.
How it works
Infrared viewer focus emitted or reflected light from a chosen
subject into the image tube. Electron image is generated in
accordance to S-1 spectral sensitivity and incident intensity
of the photocathode material. The device is powered by
pressing and maintaining a push-button located on the
device. When powered (with 1,5V battery or power supply)
the 16-18 kV voltage is generated required to accelerate the
electron image into the output phosphor screen. The
fluorescent green light output (550 nm) is observed via an
adjustable eyepiece lens.
Contents 2..........................................................................
About 2...............................................................................
How it works 2....................................................................
IR viewer in comparison with a CCD camera 3..................
Visualization of infrared laser beam in “mid-air” 3..............
Operation 3........................................................................
The Maintenance instruction 4...........................................
Spectral sensitivity of Abris M series 5..............................
Approx. Power density 5....................................................
Photosensitivity 5...............................................................
Black spots on screen 6.....................................................
Technical information 6......................................................
Safety requirements 8........................................................
Warranty 8..........................................................................
2
IR viewer in comparison with a
CCD camera
Certain models of CCD cameras can be used to observe
near- infrared radiation at wavelengths up to about 1100 nm.
However, because these cameras are designed for optimum
performance in the visible wavelength range, as a result, they
exhibit mediocre performance in the near-infrared range;
image bleeding, blooming, low sensitivity and low contrast
are some of the observed characteristics. Image conversion
viewers are design to observe much wider spectrum.
Visualization of infrared laser
beam in “mid-air”
It is a misconception that an IR viewer can be used to view
infrared laser beams in “mid-air” (1100 – 2000 nm). However,
as with the beam from a ashlight, if dust particles are in the
beam path, the beam will become partly visible. Ordinarily, IR
viewers can be used to see the projection of the infrared
beam spot on a flat diffusing surface such as a white card or
metallic surface.
Operation
CAUTION! Do not use the device for direct beam viewing.
Long-term over-exposure may cause satiation of screen and
decrease of resolution or irreversible reduction of
photocathode response. The threshold damage power
density of the screen depends on the radiation wavelength
and varies from 100mW at 800nm up to 2W at 2000nm.
Figure 1. ABRIS M viewer
3
5
6
2
1
3
4
9
10
7
8
1. Lid of battery
compartment
2. Button ON/OFF
3. Lens F1.4/26mm
4. IR filter
5. Eyepiece
6. Socket 3B
7. Handle
8. LED
9. Lid of lens
10. Tripod thread
11. Screw
12. Diaphragm
1. Unscrew the lid (1) of the battery compartment and install
one AAA size battery into battery compartment, observing
the polarity.
2. Screw the handle (7) into the tripod thread ¼inches (10)
in body.
3. Unscrew the lens cover (9). To switch the unit on, press
button (2).
4. Note: after switching off, the device continues to work
some minutes due to the reserved energy.
5. Rotate the ring (3) to focus the lens 1Х(F1.4/26 mm).
Rotate ring (13) to focus the lens 2Х(F1.8/50 mm). For
adjustment of diaphragm (12), tighten the screw (11),
adjust the diaphragm (12) and release the screw (11).
Turn the ring (5) for eyepiece focusing.
Figure 2. Lens F1.8/50mm!
6. When viewing in the near-infrared range, use the cut-off
filter (4) with transmission from 700 nm and further. When
viewing the reflected radiation, use a metallic surface as a
reflector. Any paper surface absorbs the radiation greatly.
7. For "goggle" operation, place the IR viewer onto "dove tail"
of face mask and сlamp it with screw. Adjust the position
with fixing screws for the most convenient operation
The Maintenance instruction
1. During the IR viewer operation there is no danger of
electric shock.
2. When brought into a warm room from the cold outside the
optical elements may become wet.
3. Prevent the viewer from mechanical damage and
moisture.
4. Protect the lenses from dirt. If necessary, clean them with
clean soft cloth; remove oiled spots or deposit with cotton
wool slightly wetted in rectified alcohol or with alcohol-
ether mixture.
5. If necessary, unscrew the lens and clean the
photocathode, because the dust can be viewed through
hole of cover of the lens.
4
4
12
11
13
Spectral sensitivity of Abris M
series
Figure 3. Spectral sensitivity for Abris M series IR viewers
Approx. Power density
Approximately minimum power densities required to view an
infrared laser beam from a distance one meter:
Figure 4. Approx. power density
Photosensitivity
The minimum detectable signal for a near-infrared viewer
depends on:
•Power density;
•Wavelength of incident radiation (nm);
•Effective aperture of the objective lens;
•Distance between the spot and the viewer;
•Time duration of the signal (pulsed or continuous);
5
mW/cm2
0,01
0,1
1
10
100
1000
10000
λ, nm
1000
1175
1350
1525
1700
1875
2050
M2000
M1300
M1700
mA / W
0
0,001
0,01
0,1
1
10
λ, nm
300
700
1100
1500
1900
M1700
M1300
M2000
350-1300nm
350-1700nm
350-2000nm
•Re ectivity of the di using surface;
•Sensitivity of the human eye or device used in viewing the
output of the IR viewer.
Approximately minimum power densities required for viewing
an infrared laser beam from a distance one meter:
•20 μW/cm2for a 1060 nm
•500 μW/cm2for a 1300 nm
The IR viewer with sensitivity 350-2000 nm has the
photocathode S-1+ type which contain the increased
concentration of oxygen. It increases sensitivity of the
photocathode and shi s it in infrared area. The IR viewer can
be used to view 2.0 μm laser beam at minimum power
density 2 W/cm2. When operated in the 1500-2000 nm range,
the IR viewer has a low spectral response, therefore
observations can be performed when the following
requirements are met:
1. Use an IR cut-off filter or interference filter and darken the
room to reduce the external background;
2. Use a metallic surface for viewing the laser infrared
reflective radiation, as any paper for these purposes will
absorb infrared radiation.
Black spots on screen
Black spots on the screen are cosmetic blemishes in the
image converter which do not a ect the performance or
reliability of an infrared viewers and some number of varying
size are inherent in the manufacturing processes.
Technical information
Version
Abris-M 1Х
Abris-M 2Х
Spectral
sensitivity
Abris-M 1300 (350-1300nm)
Abris-M 1700 (350-1700nm)
Abris-M 2000 (350-2000nm)
Resolution
(centre)
60 Lp/mm
60 Lp/mm
Field of view
40°
20°
Magnification
1Х
2Х
Objective lens
F1.4/26mm
F1.8/50mm
Focus
0.15m to inf
0.25m to inf
Working distance
of lens
12.5 (+/-0.2) mm
12.5 (+/-0.2) mm
Battery
1.5V, 1x “AAA” size
Non-uniformity of
screen
<20%
Non-uniformity of
response
<15%
6
Lenses 1X (F1.4/26mm) and 2X (F2/50mm) are
exchangeable.
Standard kit for version 1X includes:
•IR viewer;
•lens 1X;
•IR filter;
•handle;
•battery and case.
Standard kit for version 2X includes:
•IR viewer;
•lens 2X;
•distance ring;
•IR filter;
•handle;
•battery and case.
Accessories available upon request:
•Face mask for hands free operation;
•Infrared illuminator (940nm wavelength);
•Neutral density filters (2-5% at 1064 nm laser wavelength);
•Camera adapter;
•Microscope adapter;
•Iris diaphragm;
•C-mount adapter ring;
•Video adapter VA-1;
•Distance ring to 1X lens.
Distortion of
image
<18%
Battery life
(continuous)
35 hours
External power
supply
DC 3V, 30 mA
Weight
0.38kg
0.42kg
Dimensions
140x78x52 mm
145x78x52 mm
Temperature
range
-10ºC…40ºС
Tripod or handle
connection
R”1/4"
Version
Abris-M 1Х
Abris-M 2Х
7
Safety requirements
•The customer is responsible for light source safety while
using a viewer as a standalone device or integrated into
system.
•The customer must consider protective measures if
necessary.
•While assembling or operating viewer, do not stare at the
direct laser (or other light source) light even with safety
goggles.
•All parts of the body must be kept away from the
radiation.
•Appropriate eye protection must be worn at all times.
•Electrical safety requirements must be complied while
operating this device.
Warranty
Infrared viewing device ABRIS M meets specifications of the
manufacturer and declared operable.
The warranty period of the device is 24 months from the date
it was sold to the consumer.
Claims to quality of work of the device are not accepted, and
warranty repair is not made, if refusal has arisen as a result of
the improper use or non-observance of service and
maintenance rules. The final decision on the reason of failure
of the device is made by experts of the company –
manufacturer or distributor. The company shall not accept
warranty claim:
- At non-authorized alteration,
- At opening and disassembly,
- At mechanical damages,
- At non-observance of conditions of operation.
Serial No.
Version No.
Spectral range
Date of Invoice
8
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