LED Device with Dual-Gravity Conversion Layers for Uniform Illumination

The patent applies local quality by creating two distinct luminescent conversion layers with different specific gravities: a first layer with higher specific gravity containing more luminescent conversion elements to convert positive light, and a second layer with lower specific gravity containing fewer elements to convert lateral light. This non-uniform distribution compensates for the non-uniform light intensity from the LED chip, achieving uniform illumination while maintaining manufacturing feasibility through a systematic layering approach.

The patent applies parameter changes by carefully controlling the specific gravity and concentration of luminescent conversion elements in each layer. The first luminescent conversion layer has a higher specific gravity and higher concentration of conversion elements to handle the intense positive light, while the second layer has lower specific gravity and lower concentration to handle lateral light. This parameter optimization ensures that both layers convert light to the same wavelength range, maintaining color temperature stability while achieving uniform illumination.

The patent applies segmentation by dividing the luminescent conversion function into two separate layers with distinct characteristics. The first luminescent conversion layer, positioned closer to the LED chip, has higher specific gravity and is optimized for converting positive light. The second luminescent conversion layer, positioned farther away, has lower specific gravity and is optimized for converting lateral light. This segmentation allows each layer to specialize in converting specific light directions, achieving uniform illumination while maintaining a relatively simple overall structure that can be manufactured using conventional processes.