Patent ID: 9244262
Filing Date: 2016-01-26
CPC Classification: F03G,F24S,G02B,H01L,Y02E

Claim Text:
1. A focussing system for concentrating solar radiation onto a target surface, comprising: a first reflective element forming part of a conical surface axially aligned along a first alignment axis, the first reflective element being positioned such that when planar radiation is incident on the first reflective element in a direction parallel to the first alignment axis , the planar radiation is focussed towards a first focus lying along the first alignment axis, wherein said part of the conical surface is contained within a sector having an included angle of less than 180 degrees; and a second reflective element having a reflective surface that at all points is flat in a direction parallel to a single reference direction, the second reflective element being positioned between the first reflective element and the first focus such that, when planar radiation is incident on the first reflective element in a direction parallel to the first alignment axis, radiation reflected from the first reflective element onto the second reflective element is focussed towards a second focus.