Holographic lighting device

US12181122B2 · kind B2 · utility

Assignee

• Hella GmbH & Co. KGaA · DE

Inventors

• Carsten Hohmann · Warstein, DE
• Martin Muegge · Geseke, DE

Key dates

• Filing date: Dec 12, 2023
• Grant date: Dec 31, 2024
• Expiry date: Dec 12, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/32
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A holographic lighting device for vehicles with a light source for emitting light and with an optical unit containing a hologram element which is set up in such a way that a hologram image is generated in a given field of view. In the hologram element, such hologram information is inserted that by changing a viewing angle from a center position of the viewer, in which the viewer is arranged vertically to a surface of the hologram element, in the direction of a lateral boundary position of the viewer in which a boundary of the field of view is reached, at least in some areas, a distance between the generated hologram image and the hologram image in the center position is increased or is rotated by a vertical and/or horizontal axis, and/or a brightness of the hologram image is reduced.