LPCVD coated reflector
First Claim
Patent Images
1. A shroud for a light producing element, which minimizes damage in the event of a non-passive failure of the light producing element, the shroud comprising:
- an elongated reflecting portion having a curved cross-section; and
an elongated light-transmissive portion having a curved cross-section, the reflecting portion and the light-transmissive portion being separately formed and mechanically held together or fused together to form a generally cylindrical body having first and second open ends, a cavity in which the light producing element is disposed being between the reflecting portion and the light-transmissive portion, such that light emitted from the light producing element in a first direction strikes the reflecting portion without first striking the light-transmissive portion and light emitted from the light producing element in a second direction strikes the light-transmissive portion without first striking the reflecting portion.
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Accused Products
Abstract
A shroud (26) for a light producing element (46). The shroud having an elongated reflecting portion (20) with a curved cross-section and an elongated light-transmissive portion (24) with a curved cross-section. A cavity in which the light producing element is disposed is formed between the reflecting portion and the light-transmissive portion. A lamp (40) having a shroud (26) according to the invention is also disclosed as is a method of fabricating a shroud according to the invention.
24 Citations
20 Claims
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1. A shroud for a light producing element, which minimizes damage in the event of a non-passive failure of the light producing element, the shroud comprising:
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an elongated reflecting portion having a curved cross-section; and
an elongated light-transmissive portion having a curved cross-section, the reflecting portion and the light-transmissive portion being separately formed and mechanically held together or fused together to form a generally cylindrical body having first and second open ends, a cavity in which the light producing element is disposed being between the reflecting portion and the light-transmissive portion, such that light emitted from the light producing element in a first direction strikes the reflecting portion without first striking the light-transmissive portion and light emitted from the light producing element in a second direction strikes the light-transmissive portion without first striking the reflecting portion. - View Dependent Claims (5, 6, 7, 8, 9, 10, 19)
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2. A shroud for a light producing element, which minimizes damage in the event of a non-passive failure of the light producing element, the shroud comprising:
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an elongated reflecting portion having a curved cross-section, which defines a first portion of a curve; and
an elongated light-transmissive portion having a curved cross-section, which defines a second portion of a curve arcuately spaced from the first portion of the curve, a cavity in which the light producing element is disposed being formed between the reflecting portion and the light-transmissive portion, the reflecting portion being a light-transmissive substrate coated with a dichroic optical interference film. - View Dependent Claims (3, 4)
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11. A method of fabricating a shroud for a light producing element, comprising the steps of:
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providing an elongated reflecting portion having a curved cross-section;
providing an elongated light-transmissive portion having a curved cross-section; and
securing the reflecting portion and the light-transmissive portion together to form a generally cylindrical body having a cross section which includes a first curved portion which is defined by the reflecting portion and a second curved portion arcuately spaced from the first curved portion which is defined by the transmitting portion but not by the reflecting portion, the light producing element disposed in a cavity formed between the reflecting portion and the light-transmissive portion. - View Dependent Claims (15)
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12. A method of fabricating a shroud for a light producing element, comprising the steps of:
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a) dividing a reflecting member along a longitudinal axis to form an elongated reflecting portion having a curved cross-section;
b) providing an elongated light-transmissive portion having a curved cross-section; and
c) after steps a) and b), securing the reflecting portion and the light-transmissive portion together to define a cavity for receiving the light producing element. - View Dependent Claims (13, 14)
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16. A method of projecting light, comprising the steps of:
- emitting light from a light source;
reflecting the light in a desired direction using an elongated reflecting element having a curved cross-section; and
transmitting the reflected light through an elongated light-transmissive element having a curved surface, the elongated reflective element and elongated light-transmissive elements being separately formed and then secured together to form a generally cylindrical body having a first portion which is defined by the reflecting portion and a second portion which is defined by the light-transmitting portion and is arcuately spaced from the reflecting portion. - View Dependent Claims (17, 18)
- emitting light from a light source;
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20. A lamp comprising:
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a light producing element;
a shroud which minimizes damage in the event of a non-passive failure of the light producing element, the shroud having an open end and being formed from;
a elongated reflecting portion having a curved cross section and first and second longitudinal edges ; and
a separately formed, elongated light-transmissive portion having a curved cross section and first and second longitudinal edges, the reflecting portion and the light-transmissive portion being mechanically held together or fused together along one of the first and second longitudinal edges of the elongated reflecting portion and one of the first and second longitudinal edges of the elongated light-transmissive portion, a cavity in which the light producing element is disposed being formed between the reflecting portion and the light-transmissive portion.
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Specification