en تخصصي Special گزارش مورد case report <p class="Abstract" style="text-align: justify;">Infrared imagers are important for reorganization and monitoring. This paper discusses the design of an infrared imager. Optical design in medium wavelength infrared (MWIR) and long wavelength infrared (LWIR) bands is different and needs distinct detectors and materials. Reflective systems are not suitable due to their small field of view (FOV) and vignetting.<span style="font-size: 10pt;"> </span>Refractive dual band optical system has been designed with considering both regions assessment and each band detector specifications.</p> Infrared imagers, dual band, medium wavelength infrared (MWIR), long wavelength infrared (LWIR), Thermal infrared. 133 138 http://ijop.ir/browse.php?a_code=A-10-526-1&slc_lang=en&sid=1 Ayatollah Karimzadeh a.karimzadeh@aut.ac.ir 10031947532846001970 10031947532846001970 Yes Amirkabir University of Technology, Optics and laser Research center