Description  Claims  Drawing  Cited references 

US13300293B   [0005] 
US20110242298A   [0006] 
US300293   [0031]  [0041] 
WO13300293A   [0035] 
US7528893B   [0041]  [0217] 
US7970246B   [0041]  [0217] 
US7660047B   [0069] 
US4938563A   [0107] 

Backlight Unit With Double Surface Light Emission   [0034] 
Cone Channel Condenser Optics   [0091] 
Optimization of freeform lightpipes for light-emitting-diode projectors   [0094] 
High Collection Nonimaging Optics   [0094]  [0102] 
A review of beam shaping strategies for LED lighting   [0102] 
Brightness increase in LED by recycling of light for projection applications   [0107] 
Comparison of solar concentrators   [0108] 
Modern Optical Engineering   [0197]