US 12,477,638 B2
Two-stage multiple-color lighting spectra for optimized juvenile poultry production
Aaron Benjamin Stephan, Chanhassen, MN (US); and Curtis Allen Leyk, Albany, MN (US)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 18/281,165
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Mar. 7, 2022, PCT No. PCT/EP2022/055665
§ 371(c)(1), (2) Date Sep. 8, 2023,
PCT Pub. No. WO2022/189321, PCT Pub. Date Sep. 15, 2022.
Claims priority of provisional application 63/160,101, filed on Mar. 12, 2021.
Claims priority of application No. 21163323 (EP), filed on Mar. 18, 2021.
Prior Publication US 2024/0163999 A1, May 16, 2024
Int. Cl. H05B 47/155 (2020.01); A01K 31/18 (2006.01); H05B 45/20 (2020.01)
CPC H05B 47/155 (2020.01) [A01K 31/18 (2013.01); H05B 45/20 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A light generating system, wherein the light generating system is configured to generate system light having a controllable spectral power distribution and intensity, wherein the light generating system is configured to generate during a first time period P1, a first spectral power distribution E1, and during a second time period P2, later in time than the first period P1, a second spectral power distribution E2, wherein:
the controllable spectral power distribution comprises (a) a first spectral range Λ1 having one or more wavelengths in the blue, and having a primary first spectral power SP(P1, Λ1) during the first time period P1 and a secondary first spectral power SP(P2, Λ1) during the second time period P2, (b) a second spectral range Λ2 having one or more wavelengths in the green, and having a primary second spectral power SP(P1, Λ2) during the first time period P1 and a secondary second spectral power SP(P2, Λ2) during the second time period P2, and (c) an amber-red spectral range Λ34 having one or more wavelengths in the amber-red, and having a primary amber-red spectral power SP(P1, Λ34) during the first time period P1 and a secondary amber-red spectral power SP(P2, Λ34) during the second time period P2;
the first spectral power distribution E1 comprises the primary first spectral power SP(P1, Λ1), the primary second spectral power SP(P1, Λ2), and the primary amber-red spectral power SP(P1, Λ34); the second spectral power distribution E2 comprises the secondary first spectral power SP(P2, Λ1), the secondary second spectral power SP(P2, Λ2), and the secondary amber-red spectral power SP(P2, Λ34);
the first period P1 is selected from the range of at least part of a day; the second period P2 is selected from the range of at least part of a day;
SP(P1, Λ1)>0 Watt, SP(P1, Λ2)>0 Watt, and SP(P1, Λ34)>0 Watt;
SP(P2, Λ1)>0 Watt, and SP(P2, Λ2)>0 Watt;
SP(P2, Λ2)/SP(P2, Λ1)<SP(P1, Λ2)/SP(P1, Λ1);
SP(P2, Λ34)/SP(P2, Λ1)<SP(P1, Λ34)/SP(P1, Λ1);
SP(P2, Λ34)/SP(P2, Λ2)<SP(P1, Λ34)/SP(P1, Λ2),
the light generating system is further configured to provide during a first rearing period RP1 selected from the range of 5-20 days, each day during the first time period P1 system light with the first spectral power distribution E1, and subsequently during a second rearing period RP2 selected from the range of at least 10 days, each day during the second time period P2 system light with the second spectral power distribution E2;
the light generating system comprising one or more light generating devices configured to generate the system light; and
the light generating system comprising a control system, configured to control the controllable spectral power distribution and intensity of the system light.