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.
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Accused Products
Abstract
A light-emitting package (510) includes a substantially transparent substrate (526) having a first surface (550) and a second surface (552), and a light-emitting diode (LED) (518) adapted to emit light having a predetermined wavelength, the LED (518) being secured over the first surface (550) of the substantially transparent substrate (526). The second surface (552) of the substrate defines a principal light emitting surface of the package, and includes a grating pattern (554) that matches the predetermined wavelength of the light emitted from the LED (518) for controlling the emission geometry of the light emitted by the package.
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Citations
23 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A light emitting package comprising:
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a substantially transparent substrate having a first surface and a second surface including a lens;
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
a substantially transparent encapsulant encapsulating at least a portion of said substantially transparent substrate. - View Dependent Claims (13)
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14. 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. - View Dependent Claims (15)
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16. 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 linear configuration.
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17. 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. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification