Vol. 30, Issue 2-3, pp. 271-275 (2000)

Abstract

It has been shown that an apochromatic triplet can be designed without employing special glasses. This possibility is offered when an optical system is composed of two lenses, i.e., hybrid and glass ones. Such a system is proposed and its spherochromatic aberration is determined. The aberration characteristic of the system is compared with that of a conventional glass apochromat.