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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Rotary wheels
Rotary wheels are one of basic blocks of systems for testing imaging EO systems. They are needed to enable motorized exchange of active target at collimator focal plane. There are usually 8 holes in the wheel for targets (other numbers are also possible). Wheels are covered with a black high emissivity coating (emissivity at least 0.97).
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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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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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Targets
Targets from group A are developed to support mostly testing infrared imaging systems understood as thermal imagers. These targets can be used also in testing visible/near infrared cameras or SWIR cameras but such application is not optimal. IR targets are mostly used in DT systems for testing thermal imagers and in MS systems for testing multi-spectral systems.
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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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Collimators
Collimators are optical systems used to imitate standard targets placed in "optical infinity" (very long distance). The collimators are used for projection of image of reference targets into direction of tested imagers. According to type of optical elements used in design, collimators are divided into two groups: reflective collimators and refractive collimators. Reflective collimators due to their wide spectral range are almost exclusively used in systems for testing thermal imagers and are also preferable in systems testing TV cameras, SWIR imagers, laser systems or multi-sensor surveillance systems. Refractive collimators are mostly used in systems for testing night vision devices or TV cameras working in visible/near infrared range.
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Optical tables
The primary goal of a well designed optical table is to eliminate relative motion between components of test system located on the surface of the optical table because such motion can generate measurement errors.
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UV Cameras
Solar blind UV cameras are imaging devices optimized to detect ultraviolet light of wavelengths below about 280nm. Such cameras are insensitive against sunlight due to negligible sensitivity to visible and long wavelength UV light. Solar blind UV cameras are used in a series of applications like corona detection, fire detection, combustion analysis, plasma research, testing UV lamps, etc. However, highly sensitive corona detection is the main mass application and these devices are of crucial importance in electric power industry. These imaging devices enable easy detection of degraded insulators of high voltage transmission lines, distributions and substations. They can see the emission of UV light when discharges occur at defect insulators. From design point of view solar blind UV cameras are actually bispectral imaging systems built by combining true UV camera with typical visible camera. These bispectral imaging system generate output image as overlay of typical visible image with UV image of analyzed UV source.
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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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THz Cameras
Passive THz imagers are capable to see thru thin obstacles and are a very interesting solutions for short distance surveillance applications like airport screening, prison screening etc. Ability to create images of targets hidden by humans under clothes is particularly interesting. This ability can be evaluated when a set of parameters of these imagers is measured and known.
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Laser Systems
Laser systems (laser range finders, laser designators, laser receivers, laser trackers, laser pointers) are one of crucial technologies for defense/security sector. Laser systems have also found mass applications outside defense sector. Testing laser systems 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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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-SWIR FPA's
Imaging electronic sensors sensitive in visible, near infrared, short wavelength infrared spectral bands that generate two dimensional electronic images have found mass applications in industry, defense, security, science, environmental protection, medicine etc. Imaging sensors sensitive only in VIS/NIR range are almost exclusively silicon chips manufactured using a series of technologies: CCD, CMOS. ICCD, EMCCD, EBAPS, sCMOS in color or monochromatic versions. Color VIS/NIR sensors are sensitive to light only in visible range when monochromatic VIS/NIR sensors are sensitive up to about 1000nm.
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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).
