Patent ID: 11947151
Assignee: DESIGN LED PRODUCTS LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  B | IPC B  F

Claim 0:
1. A lighting device comprising:
one or more LED packages having at least first and second spatially separated LED chips, the first LED chip configured to generate a light output at a first wavelength, the second LED chip configured to generate light at a second wavelength different from the first wavelength;
a light guide receiving light from the one or more LED packages, and emitting the received light from a light output surface;
at least one first wavelength dependent modification feature located on a first area of the light output surface and configured to selectively modify an intensity of the light of the first LED chip; and
at least one second wavelength dependent modification feature located on a second area of the light output surface, and configured to selectively modify an intensity of the light output of the second LED chip,
wherein at least a portion of the light outputs from the first and second LED chips exit the light guide via the light output surface, such that the lighting device provides a homogeneous color light output.