Patent ID: 11874431
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G | IPC F  G

Claim 10:
11. The lighting device of claim 8, wherein
the lighting device simulates a blue sky,
the diffuser includes a first edge portion and a second edge portion of the light guiding and diffusing portion located opposite each other,
the light incident surface includes a first light incident surface formed at the first edge portion and a second light incident surface formed at the second edge portion,
the light source includes a first light source portion facing the first light incident surface and a second light source portion facing the second light incident surface, and
a color variation represented by a largest of differences between a chromaticity at a center position of the first light emission surface and chromaticities at other positions of the first light emission surface is not more than 0.04.