Design of fast aplanatic IR objectives using high refractive-index materials

Autor: Varughese, K. O. G., Banerjee, K. K., Hradaynath, R.
Zdroj: Applied Optics; January 1983, Vol. 22 Issue: 2 p347-353, 7p
Abstrakt: A method for correcting spherical aberration and coma in fast two-element objectives using high-index materials is discussed. It involves use of an aplanatic lens with a single lens having a minimum spherical aberration and no coma. The method deals only with monochromatic designs. It can be effective in designing high-aperture aplanatic IR objectives. Optical data and performance characteristics of germanium and silicon two-lens systems designed by the proposed method are given.
Databáze: Supplemental Index