Optical filter element for use in film projector; is made of heat-resistant glass-ceramics, absorbs ultraviolet light, reflects infrared light and is transparent to visible light

The filter element (4) is made of glass-ceramics and is strongly transparent in the visible range and can withstand heat. The filter element absorbs all ultraviolet light below 390 nm. An interference layer (6) is formed on one or both sides of the filter element to reflect infrared light between 68...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	BAHR, ERNST, SCHAUS, UDO
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS
Online-Zugang:	Volltext bestellen
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