US 11,934,088 B2
Light-emitting systems including dual primary red LEDs
Stephane Bellosguardo, Pleasanton, CA (US); Jinhui Zhai, Union City, CA (US); and Mark Pugh, Los Gatos, CA (US)
Assigned to Luminus, Inc., Sunnyvale, CA (US)
Filed by Luminus, Inc., Sunnyvale, CA (US)
Filed on Jun. 23, 2021, as Appl. No. 17/355,736.
Claims priority of provisional application 63/043,083, filed on Jun. 23, 2020.
Prior Publication US 2022/0050370 A1, Feb. 17, 2022
Int. Cl. G03B 21/20 (2006.01); G03B 21/00 (2006.01); G03B 33/12 (2006.01)
CPC G03B 21/204 (2013.01) [G03B 21/006 (2013.01); G03B 21/008 (2013.01); G03B 21/2013 (2013.01); G03B 33/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A light-emitting system, comprising:
a first LED-based light source configured to emit blue light;
a second LED-based light source configured to emit green light;
a third LED-based light source configured to emit red light having a peak wavelength between 605 nm-630 nm; and
a fourth LED-based light source configured to emit deep red light having a peak wavelength between 640 nm-665 nm,
a micro-display device configured to receive light from the LED-based light sources and to produce output light.