Method and device for checking the integrity of a glass...

Details Method and device for checking the integrity of a glass... Method and device for checking the integrity of a glass...

2008-03-25

2008-03-25

Stafira, Michael P. (Department: 2886)

Optics: measuring and testing

Inspection of flaws or impurities

Transparent or translucent material

C356S239200

Reexamination Certificate

active

11428651

ABSTRACT:
In order to be able to check reliably glass protecting tubes for spiral-wound filaments of an infrared radiator heat source with respect to damages due to breaking, a device and method are provided for checking the integrity of a glass protecting tube, in particular made of quartz glass, is proposed with the invention for the spiral-wound filament of an infrared radiator heat source, whereby an analysis light beam is introduced into and passed through the material of the quartz protecting tube and whereby the analysis light beam coming out of the quartz protecting tube is detected and its intensity and/or wave length and/or phase is analyzed and whereby it is ascertained by means of the analysis if the quartz protecting tube is damaged or intact.

REFERENCES:
patent: 3533704 (1970-10-01), Krenmayr
patent: 3777171 (1973-12-01), Hollenbeck
patent: 4483615 (1984-11-01), Bieringer et al.
patent: 4492477 (1985-01-01), Leser
patent: 6822735 (2004-11-01), Kim et al.
patent: 1 553 403 (2005-07-01), None

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