Led light engine and method of manufacture thereof
AssigneeOsram Sylvania Inc.
InventorsMiguel Galvez, Maria Anc
Life of this patent
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Abstract
A light emitting diode (LED) light engine includes a solid transparent dome mounted on one or more LED dies to form a base module, a flexible sheath having embedded therein a phosphor that converts light of a first wavelength range to light of a second wavelength range, the sheath being attached to the base module so that the sheath conforms to a light emitting surface of the dome. The sheath emits light of the second wavelength range when the LED is emitting light of the first wavelength range. Further sheaths may be formed each with different phosphors or phosphor blends, and one of the sheaths may be selected to cover the base module depending on the color of light to be produced by the light engine.
Claims13
A method of making a light emitting diode (LED) light engine comprising the steps of:
- mounting a substantially transparent solid dome over one or more LED dies to form a base module, the one or more LED dies being adapted to emit light of a first wavelength range through a light emitting surface of the dome;
- making a first flexible sheath having embedded therein a phosphor or a phosphor blend that converts light of the first wavelength range to light of a second wavelength range different from the first wavelength range;
- and
- after making the first sheath, attaching the first sheath to the base module so that the first sheath conforms to a shape of the light emitting surface of the dome,
- wherein light of the second wavelength range is emitted from the first sheath when the one or more LED dies is emitting light of the first wavelength range.
A light emitting diode (LED) light engine comprising:
- a substantially transparent solid dome mounted on one or more LED dies to form a base module, the one or more LED dies being adapted to emit light of a first wavelength range through a light emitting surface of the dome;
- and
- a flexible sheath having embedded therein a phosphor or a phosphor blend that converts light of the first wavelength range to light of a second wavelength range different from the first wavelength range,
- the sheath being attached to the base module so that the sheath conforms to a shape of the light emitting surface of the dome,
- wherein light of the second wavelength range is emitted from the sheath when the one or more LED dies is emitting light of the first wavelength range.
Dependencies are inferred from the claim text.