SIGNAL LIGHT USING PHOSPHOR COATED LEDS
First Claim
Patent Images
1. A signal light comprising:
- a housing;
at least one outer lens; and
at least one or more second type of light emitting diodes (LEDs) deployed in the housing, wherein the at least one or more second type of LEDs comprises;
a pump;
a phosphor; and
a filter having a cutoff point less than or equal to 540 nanometers (nm),wherein the at least one or more second type of LEDs has a pump peak wavelength less than or equal to 430 nm and has a phosphor with a peak wavelength greater than 575 nm.
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Abstract
An improved signal light and method for making an improved signal light is disclosed. For example, the improved signal light includes a housing, at least one outer lens and at least one or more second type of light emitting diodes (LEDs) deployed in the housing. The at least one or more second type of LEDs includes a pump, a phosphor and a filter having a cutoff point less than or equal to 540 nanometers (nm). The at least one or more second type of LEDs also has a pump peak wavelength less than or equal to 430 nm and has a phosphor with a peak wavelength greater than 575 nm.
31 Citations
15 Claims
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1. A signal light comprising:
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a housing; at least one outer lens; and at least one or more second type of light emitting diodes (LEDs) deployed in the housing, wherein the at least one or more second type of LEDs comprises; a pump; a phosphor; and a filter having a cutoff point less than or equal to 540 nanometers (nm), wherein the at least one or more second type of LEDs has a pump peak wavelength less than or equal to 430 nm and has a phosphor with a peak wavelength greater than 575 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of creating a signal light, comprising:
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providing a housing; providing at least one outer lens; and providing at least one or more second type of light emitting diodes (LEDs) deployed in the housing, wherein the at least one or more second type of LEDs comprises; a pump; a phosphor; and a filter having a cutoff point less than or equal to 540 nanometers (nm), wherein the at least one or more second type of LEDs has a pump peak wavelength less than or equal to 430 nm and has a phosphor with a peak wavelength greater than 575 nm.
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Specification