US 11,940,104 B2
Illumination device
Sergej Kunz, Munich (DE); and Victor Goldrin, Munich (DE)
Assigned to SEOUL SEMICONDUCTOR EUROPE GMBH, Munich (DE)
Filed by SEOUL SEMICONDUCTOR EUROPE GMBH, Munich (DE)
Filed on Jul. 13, 2023, as Appl. No. 18/351,579.
Application 18/351,579 is a continuation of application No. 17/681,465, filed on Feb. 25, 2022, granted, now 11,739,891.
Application 17/681,465 is a continuation of application No. PCT/EP2020/074021, filed on Aug. 27, 2020.
Claims priority of application No. 19193848 (EP), filed on Aug. 27, 2019.
Prior Publication US 2023/0358373 A1, Nov. 9, 2023
Int. Cl. F21K 9/69 (2016.01); F21S 8/08 (2006.01); F21S 41/151 (2018.01); F21V 23/00 (2015.01); F21Y 103/10 (2016.01); F21Y 115/10 (2016.01); G02B 27/30 (2006.01)
CPC F21K 9/69 (2016.08) [F21V 23/003 (2013.01); G02B 27/30 (2013.01); F21S 8/085 (2013.01); F21S 41/151 (2018.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08)] 20 Claims
OG exemplary drawing
 
1. An illumination device, including:
a LED module; and
an optical system arranged in proximity to the LED module and configured to collimate light emitted by the LED module,
wherein the LED module includes:
a plurality of light sources for emitting excitation light;
a plurality of phosphors covering each of the plurality of light sources and configured to convert the excitation light into illumination light; and
a light blocking layer arranged on lateral surfaces of the plurality of phosphors;
wherein:
a first group of the light sources is arranged in a first linear array having first gaps between the light sources,
a second group of the light sources is arranged in a second linear array parallel to the first linear array and having second gaps between the light sources,
each of the plurality of phosphors has a light emitting surface having a size of 1 mm2 or less, and
at least one of the light sources in the first group is controlled separately from at least one of the light sources in the second group.