Fast lens to the imposition of the entrance pupil

摘要

The lens can be used in high-aperture lenses with remote entrance pupil, as well as in a variety of optoelectronic devices, in particular, in order to form an image area of ​​the sky on the CCD located in the focal plane of the lens. The lens comprises four components, the first of which consists of two positive meniscus facing convex toward the object space, the second component comprises a negative lens and a negative meniscus convexity to the space of the object, the third component consists of two positive lenses, and a fourth component configured to form meniscus, glued from the positive and negative lens facing bulge in the object space. The technical result - an increase in the relative aperture while maintaining the linear field and high image quality. 2 ZP f ly-2-yl.;The third component of the two positive lenses are made plano-convex and meniscus cemented in the fourth component is made of positive and negative meniscus which is convex to the object space. 2 ZP f ly-2-yl.