| 摘要 |
<p>1. A process for concentrating light over an area with the aid of a fluorescing compound, wherein the fluorescing compound used is of the general formula see diagramm : EP0046861,P7,F6 where R**1 and R**2 independently of one another denote acyloxy, fluorine or optionally substituted aryl, it being possible for R**1 and R**2 to also be linked, and X is a radical of the formula see diagramm : EP0046861,P7,F7 see diagramm : EP0046861,P7,F8 or see diagramm : EP0046861,P7,F9 where rings A and B may be substituted, and Y, Y**1 , Z and Z**1 complete a carbocyclic or heterocyclic 5- or 6-membered ring which may bear further fused rings.</p> |
