IRVI VIR Series User manual

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

www.ir-viewers.com [email protected]

3
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
3
4
4
5
5
6
8
9
9
9
10
11
12
13
15

www.ir-viewers.com [email protected]
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

5
• 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?

www.ir-viewers.com [email protected]
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

7
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
2
5
Eyepiece
locking
screw
Lens
locking
screw
79 3
4
1
6
8

www.ir-viewers.com [email protected]
Figure 2. Lenses F1.8/50mm (left) and F1.4/25mm (right)
9
3
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

9
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

www.ir-viewers.com [email protected]
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