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1. (WO2018059879) OPTICAL SYSTEM FOR A LAMP, AND LAMP

Pub. No.:    WO/2018/059879    International Application No.:    PCT/EP2017/072158
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Wed Sep 06 01:59:59 CEST 2017
IPC: F21V 8/00
Applicants: ZUMTOBEL LIGHTING GMBH
Inventors: KELLER, Katharina
Title: OPTICAL SYSTEM FOR A LAMP, AND LAMP
Abstract:
The invention relates to an optical system for a lamp, in particular for a downlight, which has a light guide element (1) with a light-entry surface (3) for the entry of a light and with a light-exit region (4) for the exit of the light. The optical system also has a light-passage element (7). In addition, the light guide element (1) and the light-passage element (7) are optically sealingly connected, and configured in such a way that the light passes through the light-passage element (7) after exiting from the light guide element (1). With this configuration, in particular a particularly homogeneous distribution of the light in the light-passage element (7) can be achieved. In this way, a particularly uniform light output is subsequently achieved via the light-passage element (7).