Invention Grant
US07897098B2 High total transmittance alumina discharge vessels having submicron grain size
有权
具有亚微米粒度的高全透光率氧化铝放电容器
- Patent Title: High total transmittance alumina discharge vessels having submicron grain size
- Patent Title (中): 具有亚微米粒度的高全透光率氧化铝放电容器
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Application No.: US11851659Application Date: 2007-09-07
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Publication No.: US07897098B2Publication Date: 2011-03-01
- Inventor: George C. Wei
- Applicant: George C. Wei
- Applicant Address: US MA Danvers
- Assignee: Osram Sylvania Inc.
- Current Assignee: Osram Sylvania Inc.
- Current Assignee Address: US MA Danvers
- Agent Robert F. Clark
- Main IPC: B28B1/00
- IPC: B28B1/00
Abstract:
The present invention uses a post-sinter-HIP anneal to increase the total transmittance of ceramic discharge vessels comprised of a submicron-grained alumina doped with MgO. After the anneal, the submicron-grained alumina discharge vessels have high values of both total and in-line transmittance, and are thus suitable for use in focused-beam, short-arc lamps. In particular, the total transmittance of the discharge vessel is increased to greater than 92% in the wavelength range from about 400 nm to about 700 nm.
Public/Granted literature
- US20080042326A1 High Total Transmittance Alumina Discharge Vessels Having Submicron Grain Size Public/Granted day:2008-02-21
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