Product category:
Materials and components
News Release from: Sabic Innovative Plastics | Subject: Quartz lamp tubing
Edited by the Engineeringtalk Editorial
Team on 03 May 2005
Quartz tubing boosts lamp performance
GE Advanced Materials, Quartz has again extended the performance limits of quartz lamp tubing for short-arc ultra-high-pressure mercury lamps.
GE Advanced Materials, Quartz has again extended the performance limits of quartz lamp tubing for short arc ultra-high-pressure mercury lamps Three newly upgraded products from GE represent a significant improvement in high-purity quartz tubing, offering projector lamp manufacturers the potential for improved optical uniformity, excellent dimensional control, and increased lamp life
This article was originally published on Engineeringtalk on 26 Feb 2004 at 8.00am (UK)
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The increase in purity arises from process improvements that GE implemented for its well-established standard, low-alkali, and synthetic tubing lines.
Enhancements to GE's proprietary furnace technology and control systems yield tubing with tolerances as tight as +/-0.05mm on critical tube dimensions.
These enhancements have also helped optimise the surface finish quality and dimensional control of GE's tubing, resulting in improved optical uniformity, increased lamp life, and more consistent operating parameters when compared with competitive quartz offerings.
"GE's pioneering blend of high purity raw materials and state-of-the-art processes have helped bring these three truly unique products to customers", said Dan Chirayath, Product Manager for Lamp and Fibre Optics, GE Advanced Materials, Quartz.
"The enhanced performance and extended life may offer customers a competitive edge in the demanding market for high-pressure lamps used in data projectors, rear projection TVs, and other demanding projection applications".
GE's traditional tubing product, Type 214, sets the standard for clear, fused-quartz lamp tubing.
A high-purity, high-temperature material with a low hydroxyl content, 214 quartz tubing enables superb optical transmission for high-pressure mercury lamps.
It is economical and available in a wide range of sizes.
Type 244 tubing, GE's low-alkali product, is similar to the company's 214 quartz product, but special process controls help reduce its alkali content by up to 90%, and limit sodium and lithium to 0.2ppm or lower.
This ultrapure material also offers significantly reduced potassium.
GE's synthetic tubing product, Type 021AL, is made from dry synthetic fused silica to deliver superlative levels of purity and offer high transmittance across the visible range.
Combining ultrahigh purity with the advantages of low hydroxyl content allows 021AL tubing to yield significant resistance to solarisation.
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