US 12,013,099 B2
Projecting a static light pattern or symbol
Gregoire Denis, Sunnyvale, CA (US); Rohit Modi, Hayward, CA (US); Benno Spinger, Aachen (DE); Niels Jeroen van der Veen, Geldrop (NL); and Parijat Deb, San Jose, CA (US)
Assigned to Lumileds LLC, San Jose, CA (US)
Filed by Lumileds LLC, San Jose, CA (US)
Filed on Nov. 21, 2022, as Appl. No. 17/991,242.
Claims priority of provisional application 63/285,346, filed on Dec. 2, 2021.
Prior Publication US 2023/0175671 A1, Jun. 8, 2023
Int. Cl. F21V 11/08 (2006.01); F21V 5/04 (2006.01); F21V 9/30 (2018.01); F21Y 115/10 (2016.01)
CPC F21V 11/08 (2013.01) [F21V 5/04 (2013.01); F21V 9/30 (2018.02); F21Y 2115/10 (2016.08)] 14 Claims
OG exemplary drawing
 
1. A projection system, comprising:
a first light-emitting diode (LED) lacking a phosphor layer and having a first light-emitting surface configured to emit first emitted light having a first wavelength;
a first filter disposed on the first light-emitting surface,
the first filter being at least partially transmissive in a first area, the first area having a shape that corresponds to a shape of a first static light pattern, the first area configured to direct at least some of the first emitted light through the first filter to form first shaped light, the first shaped light extending over an area that corresponds to the shape of the first static light pattern,
the first filter being at least partially reflective in a second area, the second area configured to reflect at least some of the first emitted light into the first LED through the first light-emitting surface;
a first lens configured to bring the first shaped light to a first focus that has the shape of the first static light pattern;
a second LED lacking a phosphor layer and having a second light-emitting surface configured to emit second emitted light having a second wavelength different from the first wavelength;
a second filter disposed on the second light-emitting surface,
the second filter being at least partially transmissive in a third area, the third area having a shape that corresponds to a shape of a second static light pattern, the third area configured to direct at least some of the second emitted light through the second filter to form second shaped light, the second shaped light extending over an area that corresponds to the shape of the second static light pattern,
the second filter being at least partially reflective in a fourth area, the fourth area configured to reflect at least some of the second emitted light into the second LED through the second light- emitting surface; and
a second lens configured to bring the second shaped light to a second focus that has the shape of the second static light pattern and at least partially overlaps with the first focus.