Abstract:
LED components are described having primary optics providing improved LED component emission characteristics. Light fixtures are also described that utilize the LED components to provide improved light fixture emissions. One LED component (30) according to the present invention comprises an LED chip (34) emitting an LED chip emission pattern. A primary optic (36) is included directly on the LED chip with LED light from the LED chip passing through the primary optic. The primary optic shapes the LED emission pattern into an LED component emission pattern with the LED component emission pattern being broader than the LED chip emission pattern.
Abstract:
A low profile lighting module. Devices according to this disclosure can produce a uniform light intensity output profile, limiting the perceived appearance of individual point sources, from direct lighting modules comprising several light emitting diodes. Individual lighting device components are disclosed that can contribute to this uniform profile, including: primary optics, secondary optics, and contoured housing elements. These components can interact with and control emitted light, thus adjusting its pattern. These components can alter the direction of emitted light, providing a more uniform light intensity over a wider range of viewing angle.
Abstract:
A light emitting diode (LED) package (300) with primary optic and method of fabricating the same is disclosed that comprises an LED (102) disposed on a surface. The package further comprises at least one intermediate element (104) on the surface and at least partially surrounding the LED. Furthermore, an encapsulant (112) is over the LED forming a primary optic. The intermediate element at least partially defines the shape of the primary optic.
Abstract:
An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and an optical cavity. The optical cavity comprises a phosphor carrier having a conversions material and arranged over an opening to the cavity. The phosphor carrier comprises a thermally conductive transparent material and is thermally coupled to the heat sink structure. An LED based light source is mounted in the optical cavity remote to the phosphor carrier with light from the light source passing through the phosphor carrier. A diffuser dome is included that is mounted over the optical cavity, with light from the optical cavity passing through the diffuser dome. The properties of the diffuser, such as geometry, scattering properties of the scattering layer, surface roughness or smoothness, and spatial distribution of the scattering layer properties may be used to control various lamp properties such as color uniformity and light intensity distribution as a function of viewing angle.
Abstract:
A lighting device comprising a light source and a diffuser spaced from the light source. The lighting device further comprises a wavelength conversion material disposed between the light source and the diffuser and spaced from the light source and the diffuser, wherein the diffuser is shaped such that there are different distances between the diffuser and said conversion material at different emission angles. In other embodiments the diffuser includes areas with different diffusing characteristics. Some lamps are arranged to meet A19 and Energy Star lighting standards.
Abstract:
An emitter package (10, 30) comprising a light emitting diode LED (14) mounted to the surface of a submount (12) with the surface having a first meniscus forming feature (20) around the LED (14). A matrix encapsulant (22) is included on the surface and covering the LED (14). The outer edge of the matrix encapsulant (22) adjacent the surface is defined by the meniscus forming feature (20) and the encapsulant (22) forms a substantially dome- shaped covering over said LED (14). A method for manufacturing an LED package (10, 30) by providing a body (12) with a surface having a first meniscus holding feature (20). An LED (14) is mounted to the surface with the meniscus holding feature (20) around the LED (14). A liquid matrix encapsulant (22) is introduced over the LED (14) and the surface, the first meniscus holding feature (20) holding the liquid matrix encapsulant (22) in a dome- shape over the LED (14). The matrix encapsulant (22) is then cured.
Abstract:
An emitter includes a light source and a separately formed conversion material region with conversion particles. The light source is capable of emitting light along a plurality of light paths extending through the conversion material region where at least some of the light can be absorbed by the conversion particles. The light from the light source and the light re-emitted from the conversion particles combine to provide a desired color of light. Each light path extends through a substantially similar amount of conversion particles so that the desired color of light has a substantially uniform color and intensity along each light path.