Wide-aperture infrared lenses with hyper-hemispherical fields of view

摘要

Design forms are disclosed for infrared imaging systems that can operate at hyper-hemispherical fields of view (e.g., up to 270°) and at wide relative apertures (e.g., up to f/0.7) to produce images having low distortion--typically no more than 20% greater than the distortion resulting when the image size is proportional to the field angle.