US4937496A — Xenon short arc discharge lamp

Claim 1

Independent Claim 153 words

A xenon short arc discharge lamp comprising a high-pressure-proof bulb (1), which, at least in a transparent zone thereof, comprises quartz glass, two opposed rod-shaped electrodes (4, 5) located on a common axis (3) protruding into the bulb, of which the anode (4) has a larger diameter than the cathode (5), a xenon filling in said bulb, at a pressure of at least one atmosphere or bar in the non-operating state, thereby providing rapid approximation of maximum final light output, said electrodes (4, 5) being spaced from one another by a distance which is shorter than the diameter of the shaft (8) of the cathode (5), thereby approximating a punctiform light source, wherein the tip of the cathode (5) is at least partially conical, thereby minimizing tip melting and disintegration, and the lamp includes at least one metal halide as a doping substance, thereby constricting arc size and increasing continuum emission radiant intensity.

Claim 2

Dependent Claim 153 words

A xenon short arc discharge lamp comprising a high-pressure-proof bulb (1), which, at least in a transparent zone thereof, comprises quartz glass, two opposed rod-shaped electrodes (4, 5) located on a common axis (3) protruding into the bulb, of which the anode (4) has a larger diameter than the cathode (5), a xenon filling in said bulb, at a pressure of at least one atmosphere or bar in the non-operating state, thereby providing rapid approximation of maximum final light output, said electrodes (4, 5) being spaced from one another by a distance which is shorter than the diameter of the shaft (8) of the cathode (5), thereby approximating a punctiform light source, wherein the tip of the cathode (5) is at least partially conical, thereby minimizing tip melting and disintegration, and the lamp includes at least one metal halide as a doping substance, thereby constricting arc size and increasing continuum emission radiant intensity.

Claim 3

Dependent Claim 19 words

A lamp as defined by claim 1, characterized in that the lamp bulb (1) is completely of quartz glass.

Claim 4

Dependent Claim 31 words

A lamp as defined by claim 1 or 2, characterized in that the spacing between the electrodes (4, 5) is selected as a function of the power consumption of the lamp.

Claim 5

Dependent Claim 37 words

A lamp as defined by claim 3, characterized in that it is adapted for a power consumption of up to 20 KW, the spacing (10) between the electrodes being in the range from 0.2 to 5 mm.

Claim 6

Dependent Claim 16 words

A lamp as defined by claim 1, characterized in that the doping substance is thallium iodide.

Claim 7

Dependent Claim 16 words

A lamp as defined by claim 1, characterized in that the doping substance is indium iodide.

Claim 8

Dependent Claim 16 words

A lamp as defined by claim 1, characterized in that the doping substance is gallium iodide.

Claim 9

Dependent Claim 16 words

A lamp as defined by claim 1, characterized in that the doping substance is potassium iodide.

Claim 10

Dependent Claim 24 words

A lamp as defined by claim 1, characterized in that the doping substance is an iodide of the group IIb of the periodic table.

Claim 11

Dependent Claim 16 words

A lamp as defined by claim 9, characterized in that the doping substance is mercury iodide.

Claim 12

Dependent Claim 41 words

A xenon short arc discharge lamp according to claim 1, wherein said metal halide consists essentially of thallium oxide, and radiant intensity per unit area, in a spectral range between 500 nm and 550 nm, continuously exceeds 4 watts/sr·nm·cm 2 .

Claim 13

Dependent Claim 47 words

A xenon short arc discharge lamp according to claim 2, wherein the doping substance is an iodide of group IIb of the periodic table, and wherein radiant intensity per unit area, in a spectral range between 500 nm and 550 nm, continuously exceeds 4 watts/sr·nm·cm 2 .

Claim 14

Dependent Claim 47 words

A xenon short arc discharge lamp according to claim 3, wherein the doping substance is an iodide of group IIb of the periodic table, and wherein radiant intensity per unit area, in a spectral range between 500 nm and 550 nm, continuously exceeds 4 watts/sr·nm·cm 2 .

Claim 15

Dependent Claim 47 words

A xenon short arc discharge lamp according to claim 4, wherein the doping substance is an iodide of group IIb of the periodic table, and wherein radiant intensity per unit area, in a spectral range between 500 nm and 550 nm, continuously exceeds 4 watts/sr·nm·cm 2 .

Claim 16

Dependent Claim 154 words

A xenon short arc continuous-wave-laser-pumping light source comprising a high-pressure-proof bulb (1), which, at least in a transparent zone thereof, comprises quartz glass, two opposed rod-shaped electrodes (4, 5) located on a common axis (3) protruding into the bulb, of which the anode (4) has a larger diameter than the cathode (5), a xenon filling inn said bulb, at a pressure of at least one atmosphere or bar in the non-operating state, thereby providing rapid approximation of maximum final light output, said electrodes (4, 5) being spaced from one another by a distance which is shorter than the diameter of the shaft (8) of the cathode (5), thereby approximating a punctiform light source, wherein the tip of the cathode (5) is at least partially conical, thereby minimizing tip melting and disintegration, and the lamp includes at least one metal halide as a doping substance, thereby constricting arc size and increasing continuum emission radiant intensity.

Claim 17

Dependent Claim 154 words

A xenon short arc continuous-wave-laser-pumping light source comprising a high-pressure-proof bulb (1), which, at least in a transparent zone thereof, comprises quartz glass, two opposed rod-shaped electrodes (4, 5) located on a common axis (3) protruding into the bulb, of which the anode (4) has a larger diameter than the cathode (5), a xenon filling inn said bulb, at a pressure of at least one atmosphere or bar in the non-operating state, thereby providing rapid approximation of maximum final light output, said electrodes (4, 5) being spaced from one another by a distance which is shorter than the diameter of the shaft (8) of the cathode (5), thereby approximating a punctiform light source, wherein the tip of the cathode (5) is at least partially conical, thereby minimizing tip melting and disintegration, and the lamp includes at least one metal halide as a doping substance, thereby constricting arc size and increasing continuum emission radiant intensity.

Claim 18

Dependent Claim 39 words

A laser light source according to claim 1, wherein said metal halide consists essentially of thallium oxide, and radiant intensity per unit area, in a spectral range between 500 nm and 550 nm, continuously exceeds 4 watts/sr·nm·cm 2 .

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-06-25	1993-12-25	1994-06-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-06-25	1997-12-25	1998-06-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-06-25	2001-12-25	2002-06-26	$7700.00	Window Closed / Lapsed

Xenon short arc discharge lamp

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