Mersenne-type optical mirror system for telescope, camera, etc.

摘要

The optical system with mirror enhancement uses two or more mirrors (3,4) in front of the objective lens (1) such that the diameter of the incident light bundle is reduced by a factor F where F is the enlarging factor of the mirror system. The afocal mirror system is composed of two paraboloid mirrors in a Mersenne configuration such that the focal points of the two mirrors coincide. The main mirror is concave and the opposing mirror is convex.