MULTIPLE-LAYERED COVER STRUCTURE FOR BEAMSHAPING FOR LIGHT-EMITTING DIODE DEVICES

Solid-state lighting devices, and more particularly, a multiple-layered cover structure for beamshaping for light-emitting devices such as light-emitting diodes (LEDs) are disclosed. LED devices may include the cover structures that have more than one layer, each with different index of refractions and/or shapes in order to provide more finely tuned beamshaping than would be possible with a cover structure formed from a single layer of silicone. The cover structure can cover a side and a top of an LED chip and include an inner layer with a first refractive index that covers at least a top of the LED chip, and an outer layer with second refractive index. The cover structure also includes lumiphoric material, either in one of the inner or outer layer, or in a separate layer. The inner and outer layers can be of different shapes to result in an emission with desired characteristics.