Microelectronic package having improved light extraction
First Claim
1. A light-emitting package comprising:
- a substantially transparent substrate having a first surface and a second surface including a lens; and
a light-emitting diode (LED) adapted to emit light having a predetermined wavelength, said LED being secured over the first surface of said substantially transparent substrate, wherein the second surface of said substrate defines a principal light emitting surface of said package, and wherein said lens at said second surface has a grating pattern that matches the predetermined wavelength of the light emitted from said LED for controlling the emission geometry of the light emitted by said package, wherein the grating pattern has a radial configuration including a series of circles, and wherein the series of circles are concentric circles.
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Accused Products
Abstract
A light-emitting package includes a substantially transparent substrate having a first surface and a second surface including a lens. The package also includes a light-emitting diode (LED) adapted to emit light having a predetermined wavelength, the LED being secured over the first surface of the substantially transparent substrate. The second surface of the substrate defines a principal light emitting surface of the package. The lens at the second surface has a grating pattern that matches the predetermined wavelength of the light emitted from the LED for controlling the emission geometry of the light emitted by the package. The grating pattern has a radial configuration including a series of circles that are concentric.
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Citations
17 Claims
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1. A light-emitting package comprising:
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a substantially transparent substrate having a first surface and a second surface including a lens; and a light-emitting diode (LED) adapted to emit light having a predetermined wavelength, said LED being secured over the first surface of said substantially transparent substrate, wherein the second surface of said substrate defines a principal light emitting surface of said package, and wherein said lens at said second surface has a grating pattern that matches the predetermined wavelength of the light emitted from said LED for controlling the emission geometry of the light emitted by said package, wherein the grating pattern has a radial configuration including a series of circles, and wherein the series of circles are concentric circles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A light emitting package comprising:
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a substantially transparent substrate having a first surface and a second surface including a lens; and a light emitting diode (LED) secured over the first surface of said substantially transparent substrate, wherein the second surface of said substrate defines a principal light emitting surface of said package, and wherein said lens includes a grating pattern having a radial configuration including a series of circles, and wherein the series of circles are concentric circles. - View Dependent Claims (10)
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11. A method of making a light emitting package comprising:
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providing a substantially transparent substrate having a first surface and a second surface; mounting a light emitting diode (LED) over the first surface of said substantially transparent substrate; and forming a lens at the second surface of said substantially transparent substrate for optimizing light extraction from said package, wherein said lens has a grating pattern having a radial configuration including a series of circles, and wherein the series of circles are concentric circles. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification