Avt swir and lwir camera brochure v2 1 0 en

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SWIR and LWIR camera technology Let’s see the invisible.

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Transcript of Avt swir and lwir camera brochure v2 1 0 en

Page 1: Avt swir and lwir camera brochure v2 1 0 en

SWIR and LWIR camera technologyLet’s see the invisible.

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Visible and invisible lightInfrared radiation.

In everyday life, we encounter electromagnetic radiation in many different forms such as visible light, ultraviolet light, radio wavesor X-rays, differing only in their wavelengths. Within the electromagnetic spectrum, infrared radiation is located between visible lightand microwaves.

Highest Energy Wavelength (µm) Lowest Energy

Experimental set-up

Major divisions of the electromagnetic light spectrum

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Allied Vision Technologies provides solutions for the followingspectral bands: Visible light, NIR, SWIR, and LWIR. Thereby, fordifferent temperature ranges a corresponding sensor technologyis used, each sensitive in a specific wavelength range. In general,it can be distinguished between two principles: Quantum andthermal detectors.

Coming back to the temperature measurement capabilities ofcameras, the diagram below shows the intensity of radiationindependency of the wavelength emitted by an object with thegiven temperature. As you can see, LWIR cameras can ideallydetect and measure temperatures between -70 °C and +250 °C,as here the peak of the radiated energy emitted by an objectcorresponds with the detectors, spectral sensitivity range. Incontrast, SWIR cameras are best suited to measure temperaturesabove 250 °C and up to 800 °C. Above 800 °C, thermal imagingcan also be performed with CCD or CMOS cameras normally usedfor capturing visible images.

Detecting different types of radiation

All physical objects constantly emit infrared radiation. Once anobject becomes hotter, it emits a more intense radiation atshorter wavelengths. At moderate temperatures (above 25 °C),the intensity of the radiation reaches a level that we can detectas heat.

At temperatures above 800 °C, the intensity is high enough andthe wavelength short enough for the radiation to pass thethreshold at the red end of the visible light spectrum. Hence,steel glows red upon heating and becomes white the hotter itgets.

This means that IR radiation and likewise heat can be detectedand measured with cameras calibrated accordingly.

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Black-body spectrum for temperatures between -150 °C and 1200°C

Long Wave InfraredMWIRShort Wave InfraredNIRVisible

0.4 µm 0.75 µm 1 µm 1.7 µm 2.7 µm 5 µm 8 µm 14 µm

Guppy NIR

15

30

40

50

120

fps

Wavelength

T= 1200°

0.2 µm 0.4 µm 1 µm 10 µm 20 µm 100 µm

Pearleye LWIR

Goldeye SWIR

Guppy NIR

Spec

ific-

Spec

tral

Radi

atio

n[W

/(m

2µm

)]

Wavelength

0.01

0.1

1.0

10

102

103

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106

Bigeye NIR

T= 800°

T= 500°

T= 250°

T= 80°

T= 20°T= 25°

T= -70°

T= -150°

Mako/Manta/Prosilica GT

AVT Cameras for IR imaging

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Sensors used in SWIR cameras work similar to silica based CCDor CMOS sensors by converting photons into electrons – socalled quantum detectors. But to be able to detect light be-yond the visible spectrum, their photon sensitive area is madeof materials such as Indium Gallium Arsenide (InGaAs) or MercuryCadmium Telluride (MCT - HgCdTe). Thereby, in dependency ofthe material composition (chemical structure), these sensorsare sensitive in different wavelength ranges and might requirea strong cooling to achieve a proper SNR ratio (sometimes downto cryogenic temperatures using liquid nitrogen or a smallStirling cycle refrigerator unit).

In contrast to silicium-only based CCD and CMOS sensors, anInGaAs sensor is made of different materials. Combining thesematerials is a relative complex and time consuming technology,as many manufacturing steps are needed. Additionally, the

production yield is relatively low. This is mainly caused bydifficulties that may occur when connecting the CMOS read-outcircuit with the photosensitive part of the sensor. All this makesthese sensors types quite expensive.

Two other points may be of interest: Currently, it is impossibleto combine the ROIC (read-out circuit) with the photosensitivearea with 100% accuracy. Therefore, these sensors have a muchhigher percentage of defective pixels than CCD or CMOS sensors,which makes a proper image correction in the camera inevitable.Moreover, the thickness of the Indium Phosphide (InP) layerdetermines the spectral sensitivity range of the sensor. The thin-ner it is, the more light with higher energy can pass through.

SWIR camera technologyThe invisible light.

C-Mount Adapter

F-Mount Adapter Camera head

CMOS Readout IC (Si)

InGaAs Detector Array

InPAnti-Reflection Coating

Wavelength 0,9 -1,7 µm

Architecture of an InGaAs photodetector

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In Allied Vision Technologies’ SWIR cameras, high quality InGaAsfocal plane arrays (FPA) with global shutter are used. They areextremely sensitive and have a low dark current due to TEC cool-ing. Their design is very modular and enables to select betweendifferent interfaces, lens mounts, and wavelength filters.

Although infrared radiation in the short wave infrared regionis not visible to the human eye, it interacts with objects in asimilar manner as visible wavelengths. Therefore, images from

an InGaAs sensor are comparable to visible light images inresolution and detail; however, SWIR images are not in color.

Furthermore, InGaAs sensors react to differences in thermalenergy. This makes them less sensitive to changing light con-ditions, so that they can "see" even at night and under otherchallenging conditions like dust or haze.

Finally, one major benefit of SWIR imaging, which is unmatchedby other IR imaging technologies, is the ability to imagethrough glass. For SWIR cameras, special and expensive lensesare mostly unnecessary. SWIR cameras are available for a widevariety of applications and industries.

Interface

GigE-Interface

Camera head

CL-Interface

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Goldeye SWIR cameras incorporate high-performance InGaAssensors that are very sensitive in the NIR and SWIR spectrum.They show excellent linearity and tolerate intense illumination.Thanks to 14-bit processing and numerous image correctionfeatures, Goldeye cameras provide an outstanding, low-noiseimage quality.

The integrated Peltier cooling, available in all standard models,enables end-users to work with longer exposure times, allowingtemperature measurements to be much more precise and de-tecting low light levels easily.

Options

• Camera Link interface (Goldeye CL-008, CL-032)• F-Mount (only Goldeye P/CL-032)

instead standard C-Mount• Cost-effective version without Peltier cooling

(only Goldeye P/CL-008)

Smart Features

• Exposure control 5 µs - 1 s• On-chip high gain mode• Shipped with built-in correction data sets to perform:

• Non-uniformity correction (NUC)• Defect pixel correction

• Background correction

Operating Conditions

Power requirements DC 12 V via 15-pin D-Sub connectorPower consumption Up to 34 W when cooling is onOperating temperature 0°... +40 °Celsius ambient temp.Storage temperature -30°... +70 °Celsius ambient temp.Regulations CE, RoHS (2002/95/EC)

Goldeye SWIR CamerasSee the unseen.

Model Resolution Frame rate Pixel size Sensitive area Cooling temp. Max. size* [WxHxL] mm Weight

P-008 320 x 256 118 30 µm x 30 µm 9.6 mm x 7.68 mm 0 °C 90 x 99 x 116 <1,420 g

P-032 636 x 508 30 25 µm x 25 µm 15.9 mm x 12.7 mm -5 °C 90 x 99 x 145,1 <1,110 g

800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800

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0

Wavelenght (nm)

AbsoluteQuantumEfficiency(%

)

NIR SWIR

Spectral sensitivity P-032 P-008

*without lens

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Highlights

� InGaAs SWIR sensors, with >99% pixel operability� Spectral sensitivity ranging from 0.9-1.7 µm� Robust metal housing for industrial use� 14-bit digital processing

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� Peltier cooling for high-quality SWIR imaging andlonger exposure times up to one second

� 2 years warranty

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Imaging beyond the visible

Short-wave infrared cameras enable various types of new appli-cations or enhance current machine vision systems by imagingbeyond the visible spectrum.

As an example, SWIR cameras are often able to “see” throughsurfaces that are non-transparent to the human eye. This featurehelps to visualize underlying features such as fill levels, hiddenmoisture, or tamper-proof security codes.

In contrast to MWIR cameras, SWIR cameras do not always re-quire sensor cooling. In addition, no special lenses are neededas wavelengths between 900 nm to 2700 nm can pass throughglass. All this helps to keep the overall system costs at a mod-erate level.

Additionally the usage, the use of filters, wavelength disper-sive optics, or monochromatic light sources are convenient tocapture a distinct and a measurable contrast of the inspectedobject.

Moisture Detection

Water absorbs strongly at wavelengths of 1450 nm and 1900 nm.By using a corresponding filter or lighting, this feature can beused for various inspection tasks:

• Verification of coatings or dryness uniformity in bulkmaterial

• Fill level detection through non-transparent containers• Detection of damaged or bruised fruit• Gauging relative water content in plants

Items with higher water distribution will appear darker thandrier ones.

The technique described is usable in many industries like:

• Food & beverage, agriculture• Mining•Woodworking and lumber• Textile and clothing• Automotive

Spectroscopic Analysis

Unique molecular absorbance of light is not only evident in theMWIR spectrum, but also at shorter wavelengths in the SWIR,NIR, and visible spectrum. Hence, the spectral response can becollected either by acquiring the reflected or transmitted light.

Spectroscopy is non-destructive and requires no sample prepa-ration in general. Therefore, many material attributes can bemeasured rapidly in-line for qualitative as well as quantitativeparameters.

Typical applicationsEnhance your vision.

Authentification of a bank note

Bad fruit seen by the human eye (left) and our cameras (right)

Easy fill level detection

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Typical applications are:

• Structural clarification of unknown substances• Categorization of purity of substances by quantitativedefinition

• Probing of bulk material with minimum sample preparation(Chemometrics)

• Determination of chemical classification numbers• Quality analysis of agricultural products• Plastics sorting

Semiconductor/Solar Cell Inspection

In the wafer and solar cell production, electroluminescence(light emission as a response to electric current) is used espe-cially in the final production step of quality inspection to detectmicro-cracks and printing problems. Whereas, photolumines-cence (light emission as a response to light) can be appliedthroughout the entire manufacturing process. SWIR cameras aremost qualified for these tasks because the light emitted bysilicon has a peak at 1150 nm. Moreover, the quantum efficiencyof InGaAs sensors is much higher towards NIR-enhanced cooledor uncooled CCD and CMOS cameras that are sensitive up to

~1000 nm.

Additionally, at wavelengths below 1150 nm silicon is non-trans-parent. Thus, SWIR cameras are perfect for analyzing metall-ization and electrical contact errors on the backside of wafers.

Solar cell inspection Semiconductor or wafer inspection

Further Applications

•Metal and glass industry: Thermal imaging of hot objects(ranging from of 250 °C to 800 °C)

• Medical, science, and biology: Laser gauging• Print industry: Banknotes inspection• Art inspection• Vision enhancement

Art inspection - See the drawing under the paint(Image provided by: Musée national d'histoire et d’art Luxembourg)

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Microbolometer detectors are made up of a multitude of ele-ments (FPA – Focal Plane Arrays) where each individual detector(or pixel) has different gain and offset values due to detector-to-detector variability in the FPA fabrication process, and depends

LWIR camera technologyDetect infrared energy.

75 mm

35 mm

18 mm

Thermal detectors are classified by the type of technology usedto measure the temperature of the absorber. The most popularsensor for detecting infrared radiation between 8 and 14 µmis the bolometer or microbolometer.

The Bolometer

Bolometer sensors consist of resistive vanadium oxide (VOx)or amorphous silicon (a-Si) films. Such films detect electricalresistance changes related to temperature.

Because it is made of a single material rather than a complexmixture of different vanadium oxides, amorphous silicon pres-ents many advantages: The composition of amorphous silicondoes not show any variations. At the pixel level, the first benefitis high spatial uniformity. The second benefit is predictabletemperature behavior, a factor that contributes to easier sensoroperation in changing ambient temperatures.

For these reasons, but also because a-Si based sensors are moresensitive to temperature changes and have in general a higherquality (lower number of defective pixels). Allied Vision Tech-nologies’ cameras are only equipped with those sensors.

The Microbolometer

To ensure that the pixels are isolated from each other, the sen-sor works in a vacuum. Microbolometers are equipped withgermanium windows to guarantee perfect results in a rangebetween 8-14 µm.

Compared to quantum detectors, microbolometers typically havelower costs, a broader infrared spectral response, and requireno cooling. On the other hand, they have a lower reaction timeto temperature changes and are less sensitive than quantumdetectors.

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also on sensor operating temperature, temperature of the ob-served scene, electronic readout noise et cetera. The differencebetween gain and offset for each pixel produces a fixed patternnoise (FPN) in the acquired image that needs to be corrected bya non-uniformity correction (NUC) to receive a homogenousimage.

Another effect that also necessitates the NUC (non-uniformitycorrection) is the Narcissus effect: The Narcissus effect occurswhen an infrared detector "sees" sources at temperatures otherthan the background ambient caused by unwanted reflections of

internal lens surfaces; these sources are usually reflections ofthe detector itself. Pixels that are not corrected by the NUCprocess are defined as defective pixels and need to be identifiedand replaced by using a nearest neighbor algorithm.

Any microbolometer sensor available today has a rolling shutter.Besides the pixel size, which affects the sensor’s sensitivity anddynamic range, the most characterizing parameters of thesetype of sensors are NETD (Noise Equivalent Temperature Differ-ence) and its time-constant τ. Thereby, NETD represents theamount of temperature needed to distinguish the signal fromnoise. And the time-constant indicates how fast a sensor canreact to temperature changes.

Camera head

Interfacemodule

Shutter

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Model Resolution Frame rate Pixel size Sensitive area Size* [WxHxL] Weight

P-007 320 x 240 40 35 µm x 35 µm 11.2 mm x 8.4 mm 90 x 86 x 101 830 g

P-030 640 x 480 24 25 µm x 25 µm 16 mm x 12 mm in mm 790 g

Pearleye LWIR cameras are distinguished by their uncooled micro-bolometer image sensors, which are temperature stabilized toa fixed working temperature. The built-in temperature sensorautomatically compensates for temperature-depending outputsignal drifts. This ensures reproducible absolute measurementresults. Thereby, it is possible to detectl temperature distinc-tions smaller than 80 mK with each pixel.

With their maintenance-free sensors, the comprehensive real-time image correction features, and the standardized visioninterface, Pearleye cameras are most qualified for industrialand scientific demands. They can easily be integrated into manyGigE Vision compliant software solutions.

Smart Features

• On-chip high gain mode• Shipped with various built-in correction data sets

• Defect pixel correction• Gain-offset correction (NUC)• Drift compensation• Temperature linearization via LUT

• Background correction in the field by using theintegrated long-life electro-mechanical shutter

Operating Conditions

Power requirements DC 12 V via 15-pin D-Sub connectorPower consumption <18 WOperating temperature +15°... +50 °Celsius ambient temp.Storage temperature -30°... +70 °Celsius ambient temp.Regulations CE, RoHS (2011/65/EU)

Optional Lens Types

Field of View [HxV]

Lens Type P-007 P-030

12 mm, f/0.85, >0,5 m 50° x 38.6° 67,4° x 53,1°

16mm, f/1.2, >1 m 38,6° x 29,4° 53,1° x 41.1°

18 mm, f/1.0, >1 m* 34,6° x 26,3° 47.9° x 36.9°

22 mm, f/1.2, >1,5 m 28.6° x 21.6° 40° x 30.5°

35 mm, f/1.0, >0,5 m 18.2° x 13.7° 25.8° x 19.5°

75 mm, f/1.0, >5 m 8.5° x 6.4° 12.2° x 9.2°

* Standard lens type

Further Options

Pearleye cameras are available with customized temperaturemeasurement ranges on request. Thereby, it is possible to cali-brate the cameras individually between -20 °C and 400 °C.

Besides the default temperature measurement range from -20 °Cto + 80 °C, currently the Pearleye P-007 LWIR High Temp modelis provided that can detect between 0 °C to +200 °C.

Pearleye LWIR camerasMake the heat visible.

Spectral sensitivity

6000 8000 10000 12000 14000 16000

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Wavelength (mm)

AbsoluteQuantumEfficiency(%

)

MWIR LWIR

P-007 P-030

*without lens

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Highlights

� Uncooled microbolometer LWIR sensor� Spectral sensitivity ranging from 8-14 µm� NETD < 80 mK, @30 °C with f/1.0 lens� Very low noise (max. 4 grey levels)� Customized temperature measurement range between

-20 °C to 400 °C

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� Robust metal housing for industrial use� High accuracy by 14-bit digital processing� Built-in real-time image correction� Background correction in the field� 2 years warranty

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LWIR cameras are mainly used to measure surface temperatureprofiles of objects with high accuracy (thermography). Futher-more, they make heat radiation visible even at great distances,in total darkness, or through visibility restricted conditions(thermal vision).

Due to their comprehensive image correction features, AVTPearleye cameras are most qualified for both thermography andchallenging thermal vision applications.

Thermography

A properly calibrated camera is essential to perform accuratenon-contact temperature measurements. Although Pearleyecameras apply many built-in image correction mechanisms tocreate accurate thermographic images, it is impossible to deter-mine the actual temperature of an object. The detected tem-perature can always only be an approximation, because not onlythe observed object emits infrared radiation, but there aremultiple sources of infrared energy surrounding the object likereflections from other surfaces and differing material emissivity.

There are many thermographic applications in different indus-tries. Here are some examples:

Paper Recycling

At the beginning of the paper recycling process, the wastepaperis sorted by exposing it to heat (active thermography). A thermalcamera monitors the heat absorption to calculate the quality ofdifferent paper types like newspapers, magazines, or cardboard.The higher the detected temperature, the higher is the thick-ness and density of the paper – and the quality. Only paper ofhigh quality is used for the recycling process.

Non-contact temperature measurement ofchemical reactions

Chemical reactions are endogenous or exogenous proceedingsresulting in heat flow. Imaging of temperature distribution bymeans of thermography does not only allow punctual measuringof heat flows, but also enables analyses of the entire processchains.

Liquid and foamed chemicals are often kept in tanks. For thispurpose, thermography provides an opportunity to monitor theliquid level of tanks.

Typical applicationsMeasurements without contact.

Making chemical processes visible

Paper recycling process. Cameras must be fast and precise

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Industrial Inspection & Process Monitoring

Thermography can be used at all stages of production – frominspecting the quality of raw materials and processing of thoseraw materials to the inspection of the final product. Continuoustemperature monitoring allows an early detection of defects.This saves money as bad raw materials and products can beseparated directly and do not stay in the value adding processimpurifying the overall product quality.

Exemplary industries are plastic processing, glass processing,and steel processing.

Example applications include monitoring the cooling processafter leaving the furnace, inspecting the material thickness(quality indicator) by heating up the material before process-ing it, and inspecting the temperature of melted glass in orderto meet the ideal processing temperature to achieve the bestquality for the final product.

Laser Beam Profiling

For many applications well-calibrated lasers are required, as forlaser cutting or extreme ultraviolet (EUV) lithography. For this,especially laser focus and power need to be very accurate. Forlaser focusing, low noise levels are required to enable a uniquedetection of the beam’s center.

Medical

LWIR cameras can also be applied for noninvasive diagnosticsof humans or animals. They are used to visualize and quantifychanges in the skin surface temperature that might be causedby viruses, cancer, or inflammation. The range of screeningsoffered continues to expand, e.g., mammography, evaluationof soft tissue injuries, unexplained pain detection, or feverdetection at airports to monitor the potential spread of dis-eases.

Thermal Vision

LWIR cameras can detect thermal radiation and do not need asource of illumination. Thus, thermal radiation is ”visible“through mist, rain and smoke.

To detect objects at far distances, very low noise levels and agood temperature resolution are required.

In particular, AVT Pearleye cameras are useful for challengingsurveillance and security tasks like night vision or border con-trol.

Further Applications

The applications in the longwave infrared spectrum are multi-faceted, and every day new capabilities are found. Especially inthese fields of science and research:• Earth and solar science• Animal study• Pollution control• and many others

Humane Medicine: Noninvasive medical diagnostics

Supervision of critical components

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AVT provides two different software solutions to control Gold-eye (SWIR) or Pearleye (LWIR) cameras.

AcquireControl Viewer Application

AcquireControl is an AVT software solution that provides com-prehensive camera control and image display options as well aspowerful image processing and analyzing functionalities. Histo-grams and other statistical image data can be displayed forseveral pre-defined ROIs (Regions of Interest) at any time. TheROIs can be rectangular, circular, line, or ring-shaped. Alter-natively, these data can also be logged over a longer period oftime.

Furthermore, AcquireControl enables users to display imagesof infrared cameras in a simple way by utilizing pseudo colorLUTs. The current temperature can also be displayed at severalpoints on the image, whereas the temperature indicator rangeand the desired color profile are user-configurable.

VIMBA Software Development Kit

To develop one’s own software applications, AVT provides theVIMBA SDK, a free-of-charge comprehensive interface and plat-form independent SDK that contains the following components:

• An application programming interface (API) for cameracontrol and image acquisition

• All required drivers to integrate AVT cameras properlyinto your system

• An easy-to-use driver installation tool• A viewer application to test AVT cameras and evaluate

their features• Example collection

AVT Software SupportDeveloping customer satisfaction.

Highlights

• Simple image acquisition of greyscale, color, andtemperature images

• Comprehensive camera control• Statistical image evaluation• Pseudo color IR image display inclusive temperature

measurement• Simultaneous analysis of several user-defined ROIs• Support for important image pre-processing functions

(lookup-tables, background correction, mirroring, etc.)• Many image saving options including video recording

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Third-Party Solutions

Like all other AVT cameras, Goldeye and Pearleye cameras canalso be easily integrated into common third-party vision soft-ware solutions that are compliant to the GigE Vision andGenICam standard.

A wide range of third-party software solutions is compatiblewith AVT cameras, for example, libraries, SDKs, integrated de-velopment environments, vision applications/tools and drivers.We work in close cooperation with several certified partners toassure our customers easy installation, tested compatibility, andstrong support.

More information:

www.alliedvisiontec.com/3rd-party

Restrictions on Exports

IR cameras made by Allied Vision Technologies are subject toexport restrictions. Therefore, corresponding authorization pro-cedures may cause longer delivery times.

With many years of experience in this field we can help you tospeed up proceedings. Please contact us for further informa-tion:

[email protected]

Just tell us the product of your choice, the country it should bedelivered to, and the type of order (purchase or loan). We willthen provide you promptly with all the information needed.

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At Allied Vision Technologies, we aim for perfection for ourproducts and services. Therefore, we talk and listen to our cus-tomers every day all around the world. Our status as marketleader is the result of our relentless pursuit of building not onlythe best cameras on the market and offering an extremely reli-able support – 24 hours a day, 5 days per week.

Our support teams in Germany, Canada, USA, China, and Singa-pore and our distribution partners in over 30 countries literallyspeak the language of all our customers.

Our engineers and manufacturers in Germany and Canada workclosely together and benefit from the exchange of their inno-

Allied Vision TechnologiesSee what’s next.

Purging the camera Sensor cleaning in clean room

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vative ideas and different views originated from various culturesand understanding of the challenges of different markets.Imagine what’s possible and we do it for you. We are very proudof the good connection with our customers. Mutual trust is oneof our main reasons for our success. So that is what we havebuilt our company on.

Our cameras are hightech devices that need to work in anysituation. Every camera is built under the best circumstancespossible, e.g., cleanroom conditions. And we take care of all thedetails no matter how big or small. Just like our cameras do.

Get an idea of how we implement all of this in our line of in-frared cameras and how efficient, safe and reliably they work.High quality and perfect usability are just a few of the featureswe equipped them with.

See what’s coming next! Because seeing is believing.

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Headquarters – Stadtroda, GermanyAllied Vision Technologies GmbHTaschenweg 2AD-07646 StadtrodaTelephone: +49-36428-677-0

Osnabrück, GermanyAllied Vision Technologies GmbHWeisse Breite 7D-49084 OsnabrückTelephone: +49-541-80084-0

Newburyport, USAAllied Vision Technologies, Inc.38 Washington StreetNewburyport, MA 01950USATelephone: +1-978-225-2030Toll Free (North America): 1-877-USA-1394

Burnaby, CanadaAllied Vision Technologies Canada, Inc.101 - 3750 North Fraser WayBurnaby, B.C.V5J 5E9CanadaTelephone: +1-604-875-8855

Singapore, Republic of SingaporeAllied Vision Technologies Asia Pte. Ltd.82 Playfair Road#07-02 D'LithiumSingapore 368001Telephone: +65-6634-9027

Shanghai, ChinaAllied Vision Technologies (Shanghai) Co., Ltd.2-2109 Hongwell International Plaza1602# ZhongShanXi RoadShanghai 200235ChinaTelephone: +86-21-64861133

www.alliedvisiontec.com

©Copyright Allied Vision Technologies GmbH Germany. Printed in Germany 05/2013 V1.1.0AVT assumes no liability for errors or omissions.