Metal body arc lamp
A short arc lamp comprises front and back subassemblies including mating weld rings, whereby the lamp can be assembled and sealed through welding of the weld rings. Each subassembly includes a number of self-aligning components to facilitate assembly and improve alignment accuracy. The metal body of the lamp can have a cooling projection portion, which can be received by a heat sink to remove heat from near the anode. A heat sink also can be formed as part of the metal body. The lamp reflector can be a drop-in reflector, or can be formed as part of the metal body through a process such as metal injection molding. A single strut can be used to position the cathode, which can be part of the sleeve or received by a portion of the sleeve. A trigger electrode can be used to simplify the power supply for the lamp.
1. An arc lamp, comprising:
a sealed beam arc lamp having a cathode, an anode, and a reflector; and
a sleeve portion in the arc lamp containing a window mount and having a single strut with one end thereof being connected to the sleeve portion at a single point and with the other end thereof being unconnected to the sleeve portion and extending into a sealed gaseous atmosphere of the arc lamp, the strut axially and radially aligning one of the anode and cathode.
2. An arc lamp according to claim 1 , wherein:
the sleeve portion and single strut are formed from tungsten-copper composite.
3. An arc lamp according to claim 1 , wherein:
the sleeve portion and single strut are formed using a MIM process.
4. An arc lamp according to claim 1 , wherein:
the strut extends approximately to a center axis of the sleeve portion.
5. An arc lamp according to claim 1 , wherein:
the sleeve portion includes cooling fins integrally formed as part of the sleeve portion.
6. An arc lamp according to claim 1 , wherein:
the sleeve portion includes cooling fins brazed to the sleeve portion.
7. An arc lamp, comprising:
a sealed beam arc lamp having a cathode, an anode, and a reflector;
a sleeve portion in the arc lamp containing a window mount for the lamp; and
a single strut with one end thereof being received by a slot at a single point of the sleeve portion and with the other end thereof being unconnected to the sleeve portion and extending into a sealed gaseous atmosphere of the arc lamp, the strut axially and radially aligning one of the anode and cathode.
8. An arc lamp according to claim 7 , further comprising:
cooling fins integrally formed as part of the sleeve portion.
9. An arc lamp according to claim 7 , further comprising:
cooling fins brazed to the sleeve portion.