US 12,078,307 B2
LED retrofit lamp for use in projector type automotive headlight system
Josef Andreas Schug, Würselen (DE); Benno Spinger, Aachen (DE); Lukas Kuepper, Aachen (DE); and Jean-Sebastien Straetmans, Aachen (DE)
Assigned to LUMILEDS LLC, San Jose, CA (US)
Filed by LUMILEDS LLC, San Jose, CA (US)
Filed on Mar. 29, 2023, as Appl. No. 18/192,427.
Claims priority of provisional application 63/325,383, filed on Mar. 30, 2022.
Prior Publication US 2023/0324020 A1, Oct. 12, 2023
Int. Cl. F21S 41/141 (2018.01); F21S 41/19 (2018.01); F21S 41/25 (2018.01); F21V 19/00 (2006.01); F21Y 115/10 (2016.01)
CPC F21S 41/141 (2018.01) [F21S 41/192 (2018.01); F21S 41/25 (2018.01); F21V 19/003 (2013.01); F21Y 2115/10 (2016.08)] 20 Claims
OG exemplary drawing
 
1. An LED retrofit lamp for replacing a corresponding halogen lamp in a projection headlight system comprising a reflector comprising top, bottom, first side, and second side reflector segments and a lens, the LED retrofit lamp comprising;
a heat dissipating body portion;
a substrate comprising a first substrate surface separated by a distance from a second substrate surface to define longitudinal and lateral substrate sides, the distance defining a substrate height;
a first LED group mounted on the first surface and a second LED group mounted on the second surface;
a support bracket configured to engage the longitudinal substrate sides to mechanically support the substrate in alignment with a central optical axis of the reflector so that light emitted by the first and second LED groups normal to the first and second substrate surfaces illuminates the corresponding first and second side reflector segments, and light emitted parallel to the first and second reflector surfaces illuminates the corresponding top and bottom reflector segments with sufficient intensity for the lens to project a headlight beam with substantially homogenous light intensity.