On the reflector shape design
Aram Karakhanyan and Xu-Jia Wang
Source: J. Differential Geom. Volume 84, Number 3
(2010), 561-610.
Abstract
In this paper we study the problem of recovering the reflecting surface in a reflector system which consists of a point light source, a reflecting surface, and an object to be illuminated. This problem involves a fully nonlinear partial differential equation of Monge- Ampère type, subject to a nonlinear second boundary condition. A weak solution can be obtained by approximation by piecewise ellipsoidal surfaces. The regularity is a very complicated issue but we found precise conditions for it.
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Journal of Differential Geometry
