US 11,864,508 B2
Dark cavity lighting system
Lars Aikala, Lapinkylä (FI); and Ilkka Kivimäki, Helsinki (FI)
Assigned to VALOYA OY, Helsinki (FI)
Filed by VALOYA OY, Helsinki (FI)
Filed on Aug. 8, 2022, as Appl. No. 17/818,146.
Application 15/950,622 is a division of application No. 15/253,926, filed on Sep. 1, 2016, granted, now 9,961,841, issued on May 8, 2018.
Application 15/253,926 is a division of application No. 13/695,483, granted, now 9,450,144, issued on Sep. 20, 2016, previously published as PCT/FI2012/050118, filed on Feb. 8, 2012.
Application 17/818,146 is a continuation of application No. 16/850,963, filed on Apr. 16, 2020, granted, now 11,432,472.
Application 16/850,963 is a continuation of application No. 16/414,105, filed on May 16, 2019, granted, now 10,653,073, issued on May 19, 2020.
Application 16/414,105 is a continuation of application No. 15/950,622, filed on Apr. 11, 2018, granted, now 10,334,789, issued on Jul. 2, 2019.
Claims priority of provisional application 61/468,831, filed on Mar. 29, 2011.
Claims priority of application No. 11158693 (EP), filed on Mar. 17, 2011.
Prior Publication US 2022/0377987 A1, Dec. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A01G 7/04 (2006.01); A01G 9/24 (2006.01); H01L 33/06 (2010.01); A01G 9/20 (2006.01); H01L 33/50 (2010.01)
CPC A01G 7/045 (2013.01) [A01G 9/20 (2013.01); A01G 9/249 (2019.05); H01L 33/06 (2013.01); H01L 33/504 (2013.01); Y02P 60/14 (2015.11)] 10 Claims
OG exemplary drawing
 
1. A horticultural lighting fixture configured to emit a spectrum including
a first spectral feature in the form of a spectral peak having its peak wavelength in the blue wavelength range of 425-475 nm,
a second spectral feature in the form of a spectral valley having its base value in the cyan wavelength range of 475-500 nm,
a third spectral feature in the form of a broad-band spectral feature extending throughout the green wavelength range of 500-600 nm, and
a fourth spectral feature in the form of a spectral peak having its peak wavelength in the red wavelength range of 625-675 nm,
wherein
the fourth spectral feature has a maximum relative emission intensity that is the highest relative emission intensity within the spectrum,
the first spectral feature has a highest relative emission intensity that is non-zero but less than the maximum relative emission intensity,
the third spectral feature has a highest relative emission intensity that is non-zero but less than the maximum relative emission intensity, and
the base value of second spectral feature is below all relative intensities of the third spectral feature.