Patent ID: 11940120
Assignee: NITTO DENKO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G | IPC F

Claim 13:
14. The desktop illumination device according to claim 1, wherein the light guide includes a low refractive index layer on either the first main surface or the second main surface, the low refractive index layer having a lower refractive index than a refractive index of the light guide plate,
wherein the light guide includes a light extractor that is different from the low refractive index layer and is configured to cause the light propagating through the light guide plate to be emitted from the first main surface with the light distribution, and
wherein the light extractor is a light extracting layer disposed on the first main surface, and the light extracting layer includes one or more voids that are configured to totally reflect the light, entering the light extracting layer from the light guide plate, and cause the light to be emitted from an outermost surface of the light extracting layer.