Method to reduce color temperature variation in metal halide...

Details Method to reduce color temperature variation in metal halide... Method to reduce color temperature variation in metal halide...

H - Electricity

01

J

313/135

H01J 9/26 (2006.01) H01J 61/18 (2006.01) H01J 61/36 (2006.01) H01J 61/82 (2006.01)

Patent

CA 1293291

A METHOD TO REDUCE COLOR TEMPERATURE VARIATION IN METAL HALIDE ARC TUBES ABSTRACT OF THE DISCLOSURE The present invention is directed to method for the elimination of end pockets in metal halide arc tube envelopes (or other irregularities) in order to improve the color stability thereof. The present invention is also directed to the improve lamps having reduced or substantially eliminated end pockets. The magnitude of this improvement will increase with decreasing arc tube size, since in smaller arc tubes, the tube ends represent a larger fraction of the overall inner surface of the device.

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