Introduction
Expansion of the space observed by the optical system in order to increase the information content and maintain an acceptable image quality will always be an urgent task for optical calculators. There are numerous approaches to obtaining panoramic images, but centered lens systems remain the most accessible. Along with this, it is difficult not to notice the rapid growth of such a direction of optoelectronic instrumentation as infrared systems of the "looking" type, where the main functional element is a matrix radiation detector. The materials used to create infrared optical systems are not without drawbacks, but they have wide corrective capabilities due to high refractive indices and atypical dispersion coefficients.
Synthesis
After preliminary dimensional calculation, taking into account the parameters of the radiation receiver, the initial stage of synthesis of a distortion super-ultra-wide-angle lens is the creation of a panoramic optical system with a hemispherical (full-dome) field of view of 180 × 360º, formed from an afocal attachment (converter) in the form of a Galileo telescopic system and a base lens, their further alignment through a common aperture diaphragm and co-optimization. [1, 2] When creating them and then correcting aberrations, it is most effective to use compositional methods [3]. Further, from the side of the space of objects, a convex-concave negative (scattering) meniscus with a high refractive index and a low value of optical power is attached to the resulting optical system. Let's call this component the super ultra-wide angle attachment.The next stage of the synthesis is an iterative increase in the angular field to a given one with joint optimization. Radii of curvature and thickness are used as variable values, with the necessary design constraints. The step of increasing the angular field is about 2-0.5 °, with a gradual decrease when high values are reached and the basic objective function is updated at each optimization step.
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