Protected Metal Halide Lamp
AssigneeOsram Sylvania Inc.
InventorLori Brock
Life of this patent
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Abstract
A high intensity discharge lamp (10a) contains an unshrouded arc tube (14a) mounted in an outer envelope (12a). The outer envelope is surrounded by a protective device (50). The device (50) comprises a translucent pocket (52) constructed of a fine mesh having a strength component sufficient to retain any shards from the outer envelope or arc tube in the event of an arc tube burst and a temperature component sufficient to handle arc tube shards that can have a temperature of ≈1000° C.
Claims11
A protective device for a high intensity discharge lamp containing an arc tube within an outer envelope comprising:
- a translucent pocket formed to fit over said outer envelope of said lamp, said translucent pocket being constructed of a fine mesh having a strength sufficient to retain any shards from said lamp in the event of an arc tube burst.
A kit for adding burst protection to a high intensity discharge lamp having an arc tube mounted in an outer envelope, said kit comprising:
- a translucent pocket formed to fit over said outer envelope of said lamp, said translucent pocket being constructed of a fine mesh having a strength sufficient to retain any shards from said lamp in the event of an arc tube burst;
- and
- a clamp for positioning and holding said mesh on said outer envelope.
A protected high intensity discharge lamp having an arc tube mounted in an outer envelope comprising:
- a translucent pocket formed to fit over said outer envelope of said lamp, said translucent pocket being constructed of a fine mesh having a strength sufficient to retain any shards from said lamp in the event of an arc tube burst, said translucent pocket being fixed to said lamp outer envelope.
A method for bursting the arc tube of a high intensity discharge lamp comprising the steps of:
- operating said lamp for a sufficient time to achieve warm-up conditions;
- focusing a laser on to said arc tube;
- and
- energizing said laser at a power and for a time sufficient to cause said arc tube to burst.
Dependencies are inferred from the claim text.