US 12,338,970 B2
Lighting device for vehicles
Lukas Hiller, Lippstadt (DE); Carsten Hohmann, Warstein (DE); and Martin Mügge, Geseke (DE)
Assigned to Hella GmbH & Co. KGaA, Lippstadt (DE)
Filed by Hella GmbH & Co. KGaA, Lippstadt (DE)
Filed on Apr. 16, 2024, as Appl. No. 18/637,117.
Claims priority of application No. 102023110786.0 (DE), filed on Apr. 26, 2023.
Prior Publication US 2024/0360974 A1, Oct. 31, 2024
Int. Cl. F21S 43/31 (2018.01); B60Q 1/00 (2006.01); B60Q 1/22 (2006.01); F21S 41/147 (2018.01); F21S 41/148 (2018.01); F21S 41/33 (2018.01); F21S 43/20 (2018.01); F21W 103/20 (2018.01); F21W 103/35 (2018.01); F21W 103/40 (2018.01); F21Y 107/90 (2016.01); G02B 27/09 (2006.01); G03H 1/04 (2006.01); G03H 1/22 (2006.01)
CPC F21S 43/31 (2018.01) [B60Q 1/0041 (2013.01); B60Q 1/0088 (2013.01); B60Q 1/22 (2013.01); B60Q 2400/30 (2013.01); F21S 41/147 (2018.01); F21S 41/148 (2018.01); F21S 41/33 (2018.01); F21S 41/331 (2018.01); F21S 41/332 (2018.01); F21S 41/333 (2018.01); F21S 41/334 (2018.01); F21S 41/335 (2018.01); F21S 41/336 (2018.01); F21S 41/337 (2018.01); F21S 41/338 (2018.01); F21S 43/26251 (2024.05); F21W 2103/20 (2018.01); F21W 2103/35 (2018.01); F21W 2103/40 (2018.01); F21Y 2107/90 (2016.08); G02B 27/0944 (2013.01); G03H 2001/0469 (2013.01); G03H 2001/2231 (2013.01); G03H 2223/24 (2013.01); G03H 2225/52 (2013.01); G03H 2250/42 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lighting device for vehicles, the lighting device comprising:
a light source unit comprising light sources positioned on a printed circuit board; and
a hologram unit comprising hologram segments for generating a predefined light distribution,
wherein the hologram segments are reflection hologram segments positioned behind and/or adjacent to the light source unit in a main beam direction (H) of the lighting device, such that light emitted from the light sources strikes the reflection hologram segments at an acute angle (φ),
wherein holographic diffraction information for generating a signal light distribution is stored in the reflection hologram segments,
wherein the light source unit comprises a single printed circuit board or a single printed circuit board substrate, and
wherein the printed circuit board is between at least two of the reflection hologram segments, the printed circuit board having two sides, each side of the printed circuit board including at least one of the light sources positioned thereon.