The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2001
Filed:
Aug. 20, 1999
Daniel D. Uhm, Cornelius, NC (US);
Alcatel, Paris, FR;
Abstract
A fiber draw furnace for drawing a fiber from a preform has a thermographic sensor in combination with a thermographic profiling processor. The thermographic sensor responds to infrared energy radiating from the fiber, for providing a thermographic sensor signal containing information about the infrared energy radiating from the fiber. The thermographic profiling processor responds to the thermographic sensor signal, for providing a thermographic profiling processor signal containing information about a thermographic profile of variations in the heat emitted across the width or along the length of the fiber. The fiber is typically quartz glass. The thermographic sensor includes an infrared filter and lens combination for filtering out infrared energy outside a range of 8-12 microns radiating from the quartz fiber. The thermographic sensor includes a lens and an infrared sensor for focusing and sensing infrared energy inside a range of 8-12 microns radiating from the quartz fiber. The quartz fiber typically has a temperature in a range of 500 to 2,000 degrees Celsius. The thermographic sensor signal contains information about the infrared energy radiating from the quartz fiber in a temperature range of 500 to 2,000 degrees Celsius.