Electric lamp having optical interference filter of alternating layers of SiO.sub.2 and Nb.sub.2 O.sub.5 --Ta.sub.2 O.sub.5

R.G. Gibson; E.J.E. Cottaar; W. Doetter

Electric lamp having optical interference filter of alternating layers of SiO.sub.2 and Nb.sub.2 O.sub.5 --Ta.sub.2 O.sub.5

R.G. Gibson (Inventor), E.J.E. Cottaar (Inventor), W. Doetter (Inventor)

Research output: Patent › Patent publication

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Abstract

Thin film interference filter consists of alternating first and second layers, the first layers being silica, the second layers being a mixture of tantala and niobia. The filter may be used on a high temperature lamp in an inert atmosphere if the niobia in the mixture is less than 40% by weight. For higher percentages a partial pressure of oxygen has been found to prevent blackening of the layers.

Original language	English
Patent number	US6049169
Publication status	Published - 2000

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title = "Electric lamp having optical interference filter of alternating layers of SiO.sub.2 and Nb.sub.2 O.sub.5 --Ta.sub.2 O.sub.5",

abstract = "Thin film interference filter consists of alternating first and second layers, the first layers being silica, the second layers being a mixture of tantala and niobia. The filter may be used on a high temperature lamp in an inert atmosphere if the niobia in the mixture is less than 40% by weight. For higher percentages a partial pressure of oxygen has been found to prevent blackening of the layers.",

author = "R.G. Gibson and E.J.E. Cottaar and W. Doetter",

year = "2000",

language = "English",

type = "Patent",

note = "US6049169",

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TY - PAT

T1 - Electric lamp having optical interference filter of alternating layers of SiO.sub.2 and Nb.sub.2 O.sub.5 --Ta.sub.2 O.sub.5

AU - Gibson, R.G.

AU - Cottaar, E.J.E.

AU - Doetter, W.

PY - 2000

Y1 - 2000

N2 - Thin film interference filter consists of alternating first and second layers, the first layers being silica, the second layers being a mixture of tantala and niobia. The filter may be used on a high temperature lamp in an inert atmosphere if the niobia in the mixture is less than 40% by weight. For higher percentages a partial pressure of oxygen has been found to prevent blackening of the layers.

AB - Thin film interference filter consists of alternating first and second layers, the first layers being silica, the second layers being a mixture of tantala and niobia. The filter may be used on a high temperature lamp in an inert atmosphere if the niobia in the mixture is less than 40% by weight. For higher percentages a partial pressure of oxygen has been found to prevent blackening of the layers.

UR - http://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20000411&DB=EPODOC&locale=nl_NL&CC=US&NR=6049169A&KC=A&ND=4

M3 - Patent publication

M1 - US6049169

ER -

Electric lamp having optical interference filter of alternating layers of SiO.sub.2 and Nb.sub.2 O.sub.5 --Ta.sub.2 O.sub.5

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