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INFRAMET

  • Testing laser systems / System for testing and boresight thermal infrared lasers
  • Testing laser systems / System for testing and boresight thermal infrared lasers
  • Testing laser systems / System for testing and boresight thermal infrared lasers

LTIR

Article: 00249814

Testing laser systems / System for testing and boresight thermal infrared lasers

LTIR is a professional system for boresight of long wavelength range (2μ to 15μm) infrared lasers to optical axis of an imaging system (VIS-NIR camera, SWIR camera or thermal imager) used as an aiming device. This boresight system enables also ultra accurate measurement of divergence angle of tested lasers. Temporal and spatial stability of emitted laser beams can be determined, too. LTIR is based on a idea to use three main blocks: 1. a broadband reflective off axis collimator (CDT15120 collimator) that creates at its focal plane laser spot and later projects image of this spot, 2. a broadband radiation source (T2300 source) capable to irradiate reference alignment target radiation in ultra wide VIS-LWIR spectral band that could be seen by all potential aiming imagers (thermal imager, VIS-NIR camera or SWIR camera), 3. a special broadband thermal camera (Etro214 camera integrated with CRI objective) located inside the reflective collimator sensitive in range from 2μm to 14μm of ultra high dynamic capable to withstand laser radiation. to built a system capable to: 1. generate aiming target seen by imager combined with tested laser 2. generate live image of image of spatial profile of beam of tested laser at optical infinity 3. calculate 2D spatial profile of laser beam at optical infinity. In detail LTIR is built from following blocks: CDT15120 collimator, T2300 radiation source, CT2300 controller, MRW-8 motorized rotary wheel, set of targets, Etro 2142 broadband camera, FS3 filter slider, CRI430 objective, frame grabber, PC set, LTIR Control program, BOL program. LTIR system can be delivered in form of slightly different versions. There are three main criterion: 1. Wavelengths of lasers to be tested (SWIR and MWIR lasers – code A1; SWIR, MWIR, LWIR lasers – code A2). 2. Test range of the lasers (standard – code B1; expanded = code B2), 3. Test range of the imagers (basic - code C1, expanded – code C2). Standard test range of the lasers means all test capabilities mentioned in previous section except measurement of temporal and spatial stability of emitted laser beams. In case of expanded range software enables automatic analysis of dependence of beam of tested laser on time. Typical test range of the imager means measurement of resolution of aiming imagers. Expanded – means measurement of resolution, MTF, relative sensitivity. LTIR A1B2C1 means a system capable to do boresight and expanded tests of SWIR/MWIR lasers, and basic tests of aiming imagers (thermal imager, SWIR camera or VIS-NIR camera). LTIR A2B2C2 means a system capable to do boresight and expanded tests of all types of thermal range lasers (SWIR/MWIR/LWIR lasers) and expanded tests of aiming imagers (thermal imager, SWIR camera or VIS-NIR camera).

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