High pressure discharge lamp having pirch seals

Details High pressure discharge lamp having pirch seals High pressure discharge lamp having pirch seals

1996-11-04

1998-10-20

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313623, 313332, 445 26, 445 43, H01J 6130, H01J 6136

Patent

active

058251294

ABSTRACT:
The high pressure discharge lamp has a quartz glass lamp vessel having two opposite pinch seals. The pinch seals have major faces which are tapering from an end face towards the discharge space and have raised ridges along their axial edges. The height of the ridges diminishes towards the end faces. The lamp vessel can be obtained from a cylindrical tube by pinching without prior processing.

REFERENCES:
patent: 5062116 (1991-10-01), Christensen
patent: 5142195 (1992-08-01), Heider et al.
patent: 5500570 (1996-03-01), Jeong
patent: 5528101 (1996-06-01), Gosslar et al.

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