THE OPTICS OF NONIMAGING CONCENTRATORS
Ligth and Solar Energy

Contents:

1. Concentrators and their uses

2. Some basic ideas in geometrical optics

3. Some design of image-forming concentrators

4. Nonimaging Concentrators: The compound parabolic concentrator

5. Developments and modifications of the basic compound parabolic concentrator

6. Developments of the compound parabolic concentrator for nonplane absorbers

7. Shape tolerances for concentrators

8. Applications to solar energy concentration

9. Applications of nonimaging concentrators to purposes other than solar energy collection

Appendices

A. Derivation and explanation of the Etendue Invariant, including the dynamical analogy: Derivation of the skew invariant

B. The impossibility of designing a “perfect” imaging system or nonimaging concentrators with axial symmetry

C. The Luneburg lens

D. The geometry of the basic compound parabolic concentrators

E. The θ1/θ2 concentrators

F. The concentrators design for skew rays

G. The truncated compound parabolic concentrators

H. The differential equation for the 2D concentrators profile with nonplane absorber