EP 1817616 A1 20070815 - INCANDESCENT LAMP WITH AN ABSORPTION AND INTERFERENCE FILTER
Title (en)
INCANDESCENT LAMP WITH AN ABSORPTION AND INTERFERENCE FILTER
Title (de)
GLÜHLAMPE MIT ABSORPTIONS- UND INTERFERENZFILTER
Title (fr)
LAMPE A INCANDESCENCE A FILTRE D'ABSORPTION ET D'INTERFERENCE
Publication
Application
Priority
- DE 2005002032 W 20051111
- DE 102004055081 A 20041115
Abstract (en)
[origin: WO2006050713A1] The invention relates to an incandescent lamp for producing light in a red region of the spectrum, comprising: a translucent lamp bulb (4); a spiral-wound filament enclosed by the lamp bulb, and; an interference filter (8), which is placed on the lamp bulb and which has a number of optically low refractive layers and optically highly refractive layers. According to the invention, the lamp bulb itself forms an absorption filter that absorbs unwanted light spectra. The color location shift into the red region of the spectrum ensues via the interference filter.
IPC 8 full level
G02B 5/28 (2006.01); H01J 61/40 (2006.01); H01K 1/28 (2006.01); F21Y 101/00 (2016.01)
CPC (source: EP US)
G02B 5/28 (2013.01 - EP US); H01K 1/28 (2013.01 - EP US); H01K 1/32 (2013.01 - EP US)
Citation (search report)
See references of WO 2006050713A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102004055081 A1 20060518; CA 2584462 A1 20060518; CN 101057166 A 20071017; EP 1817616 A1 20070815; JP 2008520068 A 20080612; US 2008036351 A1 20080214; WO 2006050713 A1 20060518
DOCDB simple family (application)
DE 102004055081 A 20041115; CA 2584462 A 20051111; CN 200580038963 A 20051111; DE 2005002032 W 20051111; EP 05817117 A 20051111; JP 2007540488 A 20051111; US 66532905 A 20051111