Patent ID: 11933472
Assignee: HELLA GMBH & CO. KGAA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G | IPC F  G

Claim 13:
14. A lighting device for a motor vehicle, the lighting device comprising;
a light source;
a light guide with an entrance surface; and
a hologram disposed on or in the light guide;
wherein the lighting device is configured such that light emanating from the light source enters the entrance surface of the light guide and interacts with the hologram so that an image stored in the hologram is reconstructed and is visible to an observer of the lighting device,
wherein the light guide has a first exit surface and a second exit surface,
wherein the lighting device is configured such that light that has interacted with the hologram exits through the first exit surface, the light interacting with the hologram either during the exit or after the exit from the first exit surface, and the lighting device is configured such that light that has not interacted with the hologram exits through the second exit surface, the light not interacting with the hologram either during the exit or after the exit from the second exit surface,
wherein the light guide has a first reflecting region, wherein the lighting device is configured such that light emanating from the light source that has entered into an interior of the light guide through the entrance surface of the light guide and is directed toward the first reflecting region, is reflected from the first reflecting region in the direction of the hologram,
wherein the light guide has a second reflecting region, wherein the lighting device is configured such that light emanating from the light source that has entered into the interior of the light guide through the entrance surface of the light guide and is directed toward the second reflecting region, is reflected from the second reflecting region in the direction of the second exit surface, and
wherein the light emanating from the light source and entering the entrance surface of the light guide is first directed towards the second reflecting region, wherein a portion of the light is reflected from the second reflecting region in the interior of the light guide in the direction of the first reflecting region, and wherein a portion of the light impinging on the first reflecting region is reflected from the first reflecting region in the interior of the light guide in the direction of the hologram.