US 12,005,267 B2
Illumination apparatus
Truls Olof Johan Löwgren, Malmö (SE); Peter K Andersson, Skäret (SE); and Tord Wingren, Lund (SE)
Assigned to BRAINLIT AB, Lund (SE)
Filed by BRAINLIT AB, Lund (SE)
Filed on Mar. 6, 2023, as Appl. No. 18/178,577.
Application 18/178,577 is a continuation of application No. 16/642,427, granted, now 11,596,804, previously published as PCT/EP2018/073017, filed on Aug. 27, 2018.
Claims priority of application No. 17188135 (EP), filed on Aug. 28, 2017.
Prior Publication US 2023/0201623 A1, Jun. 29, 2023
Int. Cl. A61N 5/06 (2006.01)
CPC A61N 5/0618 (2013.01) [A61N 5/0625 (2013.01); A61N 2005/0663 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An illumination apparatus configured to induce a biological and/or behavioral effect on a human or animal, the illumination apparatus comprising:
a first light source configured to emit light having a first spectral light distribution having a first main light intensity peak about a first peak wavelength providing light stimulation, wherein the first peak wavelength is within the range of 470-490 nm,
a second light source configured to emit light having a second spectral light distribution having a second main light intensity peak about a second peak wavelength being different from the first peak wavelength, wherein the second peak wavelength is shifted with at least ±7 nm as compared with the first peak wavelength and wherein the second peak wavelength is within 10% of the visible spectral wavelength range from the first peak wavelength;
a third light source configured to emit light having a third spectral light distribution having a third main light intensity peak about a third peak wavelength being different from the first peak wavelength and from the second peak wavelength, wherein the third peak wavelength is within the range of 500-700 nm; and
a further light source configured to emit light having a further spectral light distribution having a further main light intensity peak about a further peak wavelength being different from the first peak wavelength and from the second peak wavelength, the further peak wavelength being chosen to enhance the light stimulation provided by the first light source, the further light has a main light intensity peak at a peak wavelength within the range of 580-630 nm,
wherein the illumination apparatus is configured to provide relative adjustment of light intensity of the first light source and of light intensity of the second light source, thereby providing a relative light intensity between the first light source and the second light source, and
wherein when the relative light intensity between the first light source and the second light source is adjusted, light intensity of the third light source is adjusted together with the adjustment of the relative light intensity between the first light source and the second light source in order to compensate change of the relative intensity between the first light source and the second light source, and light intensity of the further light source is adjusted together with the adjustment of the relative light intensity between the first light source and the second light source in order to enhance the light stimulation of the first light source which is changed by the relative intensity between the first light source and the second light source.