High pressure metal vapor lamp with outer protective envelope and getters therein

A high pressure metal vapor lamp, comprising:

• an outer protective envelope having a front glass lens through which visible light can pass and an aluminized rear reflector member which is generally parabolic, said outer protective envelope extending from said front glass lens toward said aluminized rear reflector member along a first axis;
• a base means affixed to said aluminized rear reflector member for connecting said lamp to a source of electrical power;
• an elongated arc tube extending along a second axis and having a discharge sustaining filling therein, said elongated arc tube including an electrode operatively disposed proximate each end thereof, said aluminized rear reflector member including first and second areas which are not exposed to direct radiation of said elongated arc tube when in use;
• an electrical connector connected to each electrode;
• supporting means extending from said base means to a respective electrical connector for supporting said elongated arc tube within said outer protective envelope such that said second axis is disposed substantially at 90.degree. relative to said first axis, and for electrically connecting said electrodes to said base means;
• and
• a first open ring barium flash getter electrically connected to said supporting means near one end of said elongated arc tube, and a second open ring barium flash getter electrically connected to said supporting means at the opposite second end of said elongated arc tube, said first and second open ring barium flash getters extending from regions adjacent respective ends of said elongated arc tube towards, and in close proximity to, said front glass lens, and facing said aluminized rear reflector member, said first and second open ring barium getter extending towards first and second regions of said front glass lens which are opposite respective of said first and second areas.