String method of nonimaging optics from a radiation theory perspective
Benaz Colabewala, Lun Jiang, Roland Winston · eScholarship (California Digital Library) · 2015
In this paper we will discuss the one-dimensional Hottel string method as it applies to symmetric, infinite sources (as in the case of constructing ideal solar concentrators) and extend the theory to asymmetric, finite sources and demonstrate that an ideal concentrator can be created in this case.Furthermore, we will discuss the concept of flowlines and explore the yet unknown relationship between strings and flowlines.