Patent ID: 7982377

Claim:
A high-pressure gas discharge lamp, at least comprising a lamp tube and two electrodes, wherein the two electrodes are each attached to the lamp tube by a respective sealed area, wherein a length RA between grooves that are located where each of the two electrodes enters the respective sealed area from a discharge chamber side of the lamp and a maximum perpendicular internal diameter ID of the lamp tube is selected such that a product of RA and ID is 25 mm 2 , wherein a product of the ID and a difference of the RA and the EAR is at least 10 mm 2 , wherein a spacing between the electrodes is an X-rayed electrode spacing EAR and the EAR is between 3.6 mm to 3.7 mm, and wherein the maximum perpendicular internal diameter ID is between 2.4 and 2.7 mm.