Patent ID: 6894429
Filing Date: 2005-05-17
Classification: H01J

Abstract:
1. A discharge lamp device comprising: an arc tube body including an insulating plug made of a synthetic resin and holding a rearward elongating portion of said arc tube in a front opening of said insulating plug, said rearward elongating portion of said arc tube elongating in a rear of said shroud glass; and a metal light blocking member with a portion interposed between a rear end face of said shroud glass and said front opening of said insulating plug, said light blocking member blocking light which is emitted from a rear end portion of said shroud glass and reaches an inner peripheral face of said front opening of said insulating plug; wherein said metal light blocking member has a shape of a bottomed cylinder and further comprising a metal supporting member that fixingly supports said shroud glass and is disposed on a front face of said insulating plug; wherein said metal light blocking member is fixed and integrated with said metal supporting member, or formed integrally with said metal supporting member.