Intra-optical light beam sighting system for an infrared thermometer

摘要: A sighting system primarily for use with infrared thermometers and that provides a visible light beam, the geometry of which is congruent field view optics thermometer to provide user an accurate representation intersection cross-section object temperature being measured by thermometer. Two novel embodiments are disclosed, one utilizes Fresnel lenses Cassegrainian lens system. Both means accommodating isolated source passage generated therefrom through identical used detector develop signal indicative energy therefore directed.