Signal light using phosphor coated leds

H - Electricity – 01 – L

Patent

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Details

H01L 33/50 (2010.01) F21K 99/00 (2010.01) F21S 8/08 (2006.01) F21V 7/00 (2006.01) F21V 9/00 (2006.01)

Patent

CA 2717843

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.

L'invention concerne un voyant lumineux amélioré et un procédé de fabrication d'un voyant lumineux amélioré. Le voyant lumineux comprend par exemple un corps, au moins une lentille extérieure et une ou plusieurs diodes électroluminescentes (DEL) d'un deuxième type, déployée(s) dans le corps. La ou les DEL du deuxième type comprend/comprennent une pompe, une matière luminescente et un filtre dont le point de coupure est inférieur ou égal à 540 nanomètres (nm). La ou les DEL du deuxième type présente(nt) également une longueur d'onde de crête de pompe inférieure ou égale à 430 nm et comporte(nt) une matière luminescente dont la longueur d'onde de crête est supérieure à 575 nm.

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