Claims
- 1. A discharge lamp comprising
- a power source,
- a fill excitation means,
- a discharge bulb containing a fill not including mercury, but based on a material selected from the group including a sulfur containing substance, a selenium containing substance, or a combination of said substances, for emitting principally visible light, and
- a variable cooling means for varying the cooling provided to said bulb so as to condense a controlled portion of said fill material so as to control the wavelength range of the spectral energy emitted by the bulb.
- 2. The lamp of claim 1 wherein said fill contains a combination of a sulfur containing substance and a selenium containing substance.
Parent Case Info
The present application is a divisional of U.S. application Ser. No. 149,818, filed Nov. 10, 1993, which is a continuation of U.S. application Ser. No. 060,553 filed May 13, 1993, now abandoned, which in turn is a continuation-in-part of U.S. application Ser. No. 867,551, filed Apr. 13, 1992, now abandoned, U.S. application Ser. No. 875,769 filed Apr. 29, 1992, now abandoned, and U.S. application Ser. No. 882,409, filed May 13, 1992, now abandoned, each of which application is a continuation-in-part of U.S. application Ser. No. 07/779,718, filed Oct. 23, 1991, now abandoned, which is a continuation-in-part of U.S. application Ser. No. 604,487, now abandoned, filed Oct. 25, 1990.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
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62272448 |
Nov 1987 |
JPX |
Related Publications (4)
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Number |
Date |
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875769 |
Apr 1992 |
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882409 |
May 1992 |
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875769 |
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882409 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
149818 |
Nov 1993 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
60553 |
May 1993 |
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Continuation in Parts (3)
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Number |
Date |
Country |
Parent |
867551 |
Apr 1992 |
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Parent |
779718 |
Oct 1991 |
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Parent |
604487 |
Oct 1990 |
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