IRVI VIR Series User manual

MANUAL
RoHsCЄ
Infrared viewers VIR series
VIR-1300-X VIR-1700-X VIR-2000-X

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Content
Content
Safety requirements
About
Applications
How does it work?
Operation
IR viewer in comparison with a CCD camera
Visualization of infrared laser beam in “mid-air”
The Maintenance instruction
Black spots on screen
Spectral sensitivity
Power density
Photosensitivity
Technical information
Warranty
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High performance image conversion viewers VIR, based on high - grade
image converter, are designed to observe indirect radiation of infrared
laser, light emitting diodes (LED), dye and other IR-sources in 350 - 2000 nm
spectral region. The lightweight, compact device can be used hand-held,
post mounted with the 1/4-20 internal thread.
VIR viewer has better resolution, infrared sensitivity and factor of
intensification. Also, it can be used with a CCD camera adapter for PC and
video registration of the image.
This device allows viewing continuous lasers radiation as well as pulsed lasers
radiation with pulse duration from ps to µs without synchronization.
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 source) light even with safety goggles.
• This device will not protect you from direct or high light radiation. Use
viewer with caution and appropriate attenuation.
• Electrical safety requirements must be complied while operating this
device.
SAFETY REQUIREMENTS
ABOUT

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• Laser alignment and safety;
IR viewers are ideal for alignment of infrared laser beam and optical
components innear infrared systems;
•Semiconductors wafer inspection;
With a microscope adapter IR viewer can be used to view through the surface of
silicon andgallium arsenide wafers;
•Forensics andartrestoration;
•Photo processing;
•Thermal imaging;
•Food sorting;
• Vein and blood vessel observation under the skin;
•Fluid inspection.
IR viewer is based on a
first-generation high-grade
image converter that has an
electro-static focusing system,
photocathode S-1+ with
increased concentration of
oxygen and screen of type
P-20 with maximum of luminescence at 550nm.
Infrared viewer focus emitted or reflected light from a chosen subject into the
image tube where electron image is generated. When powered (with 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.
Imaging
optics
Photo-
cathode
surface
+HV
Electrostatic
lens
Visible
phosphor
screen
APPLICATIONS
HOW DOES IT WORK?

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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.
Use your computer or phone charger with USB cable to charge the
device. Do not charge the device with a charger which is more powerful
than 5V DC 500mA.
•To charge the device use USB outlet at the bottom of the handle.
•Screw the handle (6) into the tripod thread ¼ inches (8) in body.
•Take of the lens cover. To switch the unit on, press button (2).
NOTE: after switching off, the device continues to work some minutes due to
the accumulated power.
•Rotate the ring (3) to focus the lens 1X (F1.4/25mm). Rotate ring (3) to focus
the lens 2X (F1.8/50mm). For adjustment of diaphragm (9), release the
screw, adjust the diaphragm (9) and tighten the screw. Turn the ring (5) for
eyepiece focus adjustment.
•When viewing in near-infrared range, use cut-off filter (4). While viewing a
reflected radiation, use metallic surface as a reflector. Any paper surface
absorbs the radiation greatly.
OPERATION

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1. USB on a handle for charging
2. Button ON/OFF
3. Focus adjustment ring
4. IR Filter
5. Eyepiece
6. Handle
7. LED
8. Tripod thread
9. Iris adjustment ring
Figure 1. VIR 1X viewer
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5
Eyepiece
locking
screw
Lens
locking
screw
79 3
4
1
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Figure 2. Lenses F1.8/50mm (left) and F1.4/25mm (right)
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Certain models of CCD cameras can be used to observe near-infrared
radiation at wavelengths up to 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.
IR VIEWER IN COMPARISON WITH
A CCD CAMERA
3. Focus adjustment ring
9.Iris adjustment ring

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It is a misconception that an IR viewer can be used to view infrared laser
beams in “mid-air” (1100 – 2000 nm). However, if dust particles are in the beam
path, the beam will become partly visible. Basically, 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.
1. Keep away viewer from mechanical damage andmoisture.
2. 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.
3. If necessary, unscrew the lens and clean the photocathode window,
because dust can be seen through eyepiece.
4. If viewer not used please keep objective closed due to photo cathode
exposure to light and possible degradation of IR sensitive material.
Black spots on the screen are cosmetic blemishes in the image converter
which do not affect the performance or reliability of an infrared viewers.
Some spots are inherent in the manufacturing processes.
VISUALIZATION OF BEAM IN “MID-AIR”
THE MAINTENANCE INSTRUCTION
BLACK SPOTS ON SCREEN

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Zone
Form and size
of zones on
photocathode,
mm
The greatest diameter
of points, mm Total area of
allowable
defects on
screen, mm2
Non
accounted
Accounted
Size Qty
1 Circle dia 12mm 0.1 0.5 20.8
2 Ring dia 12-19mm 0.25 0.8 10.904
3 Ring dia 19-24mm Non specified
Spectral sensitivity
Figure 3. Spectral sensitivity (VIR series IR viewers)
10-4
400200 600 800 1000 1200 1400 1600 1800 2000
10-3
10-2
101
1
10-1
mA/W
Wavelength
VIR 1300 VIR 1700 VIR 2000

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The minimum detectable signal for a near-infrared viewer depends on:
•Power density;
•Wavelength ofincident radiation;
• Effective aperture of the objective lens;
• Distance between observed target and the viewer;
• Time duration of the signal (pulsed or continuous);
• Reflectivity of the diffusing surface;
• Sensitivity of human eye or device used in viewing the output of the
IR viewer.
Approximate minimum of power densities required for observing an infrared
laser source from a distance of 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. 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, 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
external background;
2. Use a metallic surface for observation reflected radiation, as any other
material might absorb infrared radiation.
PHOTOSENSITIVITY

Technical information
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* with macro ring
Lenses 1X (F1.4/25mm) and 2X (F1.8/50mm) are exchangeable.
Version 1 (1X) 2 (2X)
Spectral sensitivity
VIR-1300-x (350-1300nm)
VIR-1700 -x (350 -1700nm)
VIR-2000-x (350-2000nm)
Resolution (center) 60 Lp/mm 60 Lp/mm
Field of view 40° 20°
Magnification 1X 2X
Objective lens F1.4/25mm F1.8/50mm
Adjustable iris Included Included
Focus 0.1m to ∞ 0.5m (0.15m)* to ∞
Distortion of image 20%
Battery life fully charged 50 hours
Weight 0.4 kg
Dimensions 153x184x51 mm
Temperature range -10ºC…40ºC
Tripod or handle R1/4”

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Accessories available upon request:
Standard kit for
version 1X includes:
Standard kit for
version 2X includes:
•IR viewer;
•Lens 1X;
• IR filter;
•Handle;
•Case.
•IR viewer;
•Lens 2X;
•Macro ring;
• IR filter;
•Handle;
•Case.
• Neutral density filter for lens 1X(3-5% @ 1064nm);
• Neutral density filter for lens 2X(3-5% @ 1064nm);
•Microscope adapter;
•IR illuminator (940nm, 850nm);
• 1:1 Optical relay lens adapter for c-mount camera;
•Analog video adapter;
•Lens 1X(F1.4/25mm);
• Macro ring;
• C-mount ring for any C-mount type lenses;
•Tripod.

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Infrared viewing device VIR meets specifications of the manufacturer and
declared operation.
The warranty period of the device is 24 months from the date it was sold to
the consumer.
Claims not accepted, and warranty repair are not made, because of the
improper use or incorrect service and maintenance of product instructions.
The company shall not accept warranty claim:
•non-authorized alteration;
•disassembling ofdevice;
•mechanical oranyexternal damages;
• if 2 years warranty term has expired.
SERIAL NO.
VERSION NO.
SPECTRAL RANGE
DATE OF INVOICE
WARRANTY

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ADOS-TECH, UAB
Mokslininku st. 6B,
LT-08412, Vilnius, Lithuania
Phone: [phone]
Fax: [phone]
[e-mail]
www.ir-viewers.com