Inframet
INFRAMET is a SME (Small and Medium Enterprise) that specializes in testing and simulation of imaging electro-optical systems: thermal imaging systems, image intensifier systems, CCD/CMOS/ICCD cameras.
- +48 22 6668780
- +48 22 3987244
- info@inframet.com
- Bugaj 29A
Koczargi Nowe
, Stare Babice 05-082
Poland
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Light Sources
There are many low cost artificial light sources used for illumination or for industrial applications: tungsten or halogen bulbs, fluorescent lamps, LED lamps etc. Some of these sources have regulated intensity of emitted light. However, there very few calibrated light sources of precisely known parameters. A light source can be considered as calibrated when its user can precisely regulate its photometric/radiometric parameters like luminance (or illuminance), radiance (or irradiance) at defined spectrum of interest. Such light sources are needed in many applications among them, in systems for testing night vision devices, VIS-NIR cameras and SWIR imagers. Inframet offers a series of calibrated light sources that can be divides into three groups:
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SWIR Imagers
SWIR imagers (short wavelength infrared) are an important group of surveillance electro-optical imagers due several reasons. First, advances in InGaAs technology enabled design of relatively low cost SWIR imagers. Second, InGaAs imagers are very sensitive and can generate images of observed scenery even at dark nights. Third, SWIR imagers are less vulnerable to bad atmospheric conditions than TV/LLLTV cameras working in visible/near infrared band. Fourth, SWIR imagers can generate hi-res images even if they are built using much smaller optics than used for design of thermal imagers.
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Target simulators
Simat simulator is an advanced hardware simulator capable to simulate in infrared range several targets on quasi uniform background. In detail Simat simulator is a modular image projector capable to simulate in infrared range variable intensity, variable angular size, variable spectrum, spatially and temporally dynamic airborne type targets on quasi uniform background. Basically the aim of Simat to enable simulation typical airborne targets like aircrafts or helicopters for infrared imaging sensors used for surveillance of these targets. Optionally Simat can be modernized to enable simulation in both IR and UV/visible ranges as the projectors are built using broadband reflective optical elements.
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Test Services
INFRAMET offers two types of services in field of electro-optical imaging systems: 1)Trainining and consulting; 2)Test services.
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Blackbodies
Blackbodies are devices that work as near perfect emitters of thermal radiation in range from visible to microwaves. There are many blackbodies available on international market. Inframet specializes in high-tech expensive blackbodies optimized for narrow market of high requirements. All blackbodies offered by Inframet are characterized by special features.
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Image Intensifiers
Image intensifier tubes (IITs) are vacuum tubes that amplify a low light-level image to observable levels. Image intensifier tubes are the most important modules of night vision devices that play crucial role in defense/security/industrial applications.Technology of manufacturing of image intensifier tubes is very difficult and performance parameters of modern IITs varies even within the same technological process. Next, test report offered by manufacturers cannot be fully trusted because there are some differences in test methods used by different manufactures. Further on, there are literature sources presenting conflicting claims of different manufacturers. It is quite common to find on the world market two night vision devices (or two image intensifier tubes) of the same data sheet parameters but of totally different image quality. Inverse situation is possible, too. Due to reasons mentioned above testing image intensifier tubes is of critical importance for both their manufacturers, manufacturers of night vision devices (NVDs) and final users of NVDs.
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VIS-NIR Cameras
Surveillance cameras based on CCD/CMOS/ ICCD/ EMCCD/EBAPS imaging sensors sensitive in visible and near infrared range are widely used in many long range surveillance applications as independent imagers or as part of a bigger multi-sensor surveillance systems. Majority of VIS-NIR cameras are used for day level applications but an increasing number of these cameras is used to enable surveillance in both night and day conditions. In both cases it is important to verify performance of these cameras under varying illumination conditions from very dark nights to ultra bright days. Important missions can fail due to too low sensitivity of VIS-NIR cameras at night conditions (dark, noisy images) or due to too low dynamic at ultra bright day conditions (saturated, blurred images). Next, it is important to use VIS-NIR cameras that generate high quality images in order to achieve maximal effective surveillance ranges.
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Meters
Meters offered by Inframet are basically meters designed to support calibration of test systems manufactured by Inframet. The meters can be divided into two groups:*Temperature meters*Luminance meters
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Multi-Sensor Systems
Multi- sensor surveillance systems represent a fast growing group of electro-optical systems of critical importance in both defense and civilian applications. At the same time they are the most expensive groups of electro-optical systems. Most advanced but rarely met multi-sensor surveillance systems are built from a long series of sensors like thermal imager (or two thermal imagers, color VIS camera, low light VIS-NIR camera, SWIR camera, laser range finder, laser designator, laser pointer, illuminator located on a stabilized platform and such systems. Simpler systems built from two-three sensors located on smaller stabilized or non-stabilized platforms are more common.
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IR FPA sensors
IR FPA sensors are the most important modules of thermal imagers. Design of sensor electronics (camera core) is a crucial part of designing of new thermal imager. Knowledge of precise parameters of IR FPA sensor is needed by both professionals involved in both IR FPA technology/thermal imagers technology because parameters of IR FPA sensors determine performance limits of thermal imagers. Therefore test equipment that enable measurement of IR FPA sensors is a vital tool for development of both IR FPA technology/thermal imagers technology. It is commonly known that data sheets provided by manufacturers of IR FPA sensors (both cooled or non-cooled) provide too little details for electronics designers. Sometimes the provided data is not accurate enough and better sensor performance can be achieved using modified control signals. Therefore design teams loose sometimes years to develop electronic camera core optimized for a specific IR FPA sensor. When the type of the IR FPA sensor is changed the whole process is to be repeated. In this situation an universal, flexible camera core that would accept IR FPA sensors from different manufacturers and to carry out semi-automatic determination of optimal signal controls for a specific IR FPA sensor would be highly desirable.
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Discrete Detectors
TRAL test station is a quasi-universal test station designed to measure parameters of discrete (or small linear array) infrared detectors sensitive in a wide spectral range from about 700nm to about 16 000 nm (NIR/SWIR/MWIR/ LWIR detectors or broadband non selective detectors). All main types of infrared detectors can be tested: photonic detectors: photovoltaic/photoreconductive, cooled/non-coooled, thermal detectors, pyroelectric detectors etc.
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Night Vision Devices
Night vision devices are one of crucial surveillance technologies for defense/security sector. NVDs have also found mass applications outside defense sector. Testing NVDs is needed for both manufacturers, maintenance workshops and final users for a set of different and important reasons. Hi-tech test equipment can help significantly in manufacturing, maintenance, training, purchase optimization, and optimal use of night vision devices.
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Streak Tubes
Streak tubes are the most important modules of streak cameras used for the study of ultra fast optical phenomena. The latter cameras are tools of critical importance in many areas of science and technology like studies of plasma/electric discharge/ combustion/laser ablation/ condensed matter phenomenon, in optical communications, electron beam acceleration technology, photochemistry, medicine, biology etc. Streak cameras have made possible a series of important scientific discoveries in earlier mentioned areas of science and technology. Precision information about parameters of streak tubes is needed both by manufacturer of such tubes in improve tube design and by users of these tubes to correct data generated by the tubes and make possible more accurate interpretation of output images.
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Boresight Systems
Boresight is a process to align optical axis of single system or a series of optical or electro-optical systems with a certain reference optical axis or mechanical axis. Proper boresight is particularly critical in case of multi-sensor electro-optical surveillance systems built from a series of systems like thermal imager, VIS/NIR camera, SWIR camera, laser range finder, laser pointer.
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Fused Imagers
Fused imagers (fusion multi-sensor imaging systems) offer increased surveillance capabilities due to fusion of classical thermal image with classical visible image. The fusion systems are typically built by combining optically images from thermal imager and classical night vision device, or by combining digitally images from thermal imager and digital night vision devices (or electronic VIS-NIR camera).
