Patent ID: 11946613
Assignee: COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  B  G | IPC B  F

Claim 0:
1. A lighting unit, comprising the following elements in this sequence
a transparent thermoplastic layer (300) having a visible side and a side facing away from the visible side,
wherein
the transparent layer (300) has a transmittance Ty of ≥10%, determined in accordance with DIN ISO 13468-2:2006 (D65, 10°), and
has a 3-dimensionally structured surface on the side facing away from the visible side,
a metal layer (200) directly on the transparent layer (300) on the side facing away from the visible side, wherein the metal layer (200) has a transmittance Ty of ≥4%,
determined in accordance with DIN ISO 13468-2:2006 (D65, 10°),
wherein the combined transmittance Ty of the metal layer (200) with the transparent layer (300), determined in accordance with DIN ISO 13468-2:2006 (D65, 10°), is at least 3.0%,
a diffuser layer (100), which is at a distance of ≤5 mm from the metal layer and has a transmittance Ty of at least >50%, determined in accordance with DIN ISO 13468-2:2006 (D65, 10°), and a half-value angle of 10°≤<x≤50°, determined in accordance with DIN 5036:1978 (based on light intensity),
a light source (600), which conveys information and is at a distance from the diffuser layer of <80 cm.