Telescope e.g. Galilean telescope, has lens and eye-piece comprising respective fresnel-structures that exhibit imaging characteristics and cause optical path convolutions, and fresnel-segments provided at distance from each other

摘要

The telescope has a lens (L1) and an eye-piece (L2) comprising respective fresnel-structures (10, 11), which exhibit imaging characteristics and cause optical path convolutions, where number of optical path convolutions are even in a level. The Fresnel-structures are formed on front sides (8) and a rear side (9) of a supporting element (7) i.e. plane parallel plate, which is designed as a single-piece. Fresnel-segments are provided at a distance from each other, where the telescope is designed in the form of eyeglass and lorgnette.