Discharge lamp having a visual-change timer
A discharge lamp having a visual-change timer is described. The visual-change timer is comprised of a ceramic material that provides an indication of the cumulative operating time of the lamp. The visual-change timer is expected be a help to consumers in avoiding unnecessary, premature, and costly lamp replacement and a help to lamp manufacturers in verifying the validity of warranty claims for replacement lamps.
Osram Sylvania Inc.
H G G
H01J G01K G01K
inventional additional inventional
Peter George C.
Niedermeier Wei