Patent ID: 6957650
Filing Date: 2005-10-25
Classification: F24S,G02B,H01L,Y02B,Y02E

Abstract:
1. A collector for collecting radiation incident on the collector from at least a first direction, the collector comprising: a propagation component configured to transmit radiation and having a first end and at least a first refractive index; a buffer component coupled to the propagation component and configured to transmit radiation and having at least a second refractive index, the second refractive index being less than the first refractive index of the propagation component; a radiation directing component coupled to the buffer component and configured to redirect the incident radiation from the at least first direction along at least a second direction different than the first direction within the buffer component, such that the radiation enters the propagation component and is propagated within the propagation component toward a first end of the propagation component by at least total internal reflection; and a lower interface located between the propagation component and an outside medium, wherein the outside medium has a refractive index at the lower interface which is less than the first refractive index of the propagation component.