US Patent No. 9,557,016

COLOR RENDERING INDEX TUNABLE LAMP AND LUMINAIRE


Patent No. 9,557,016
Issue Date January 31, 2017
Title Color Rendering Index Tunable Lamp And Luminaire
Inventorship Ties Van Bommel, Horst (NL)
Rifat Ata Mustafa Hikmet, Eindhoven (NL)
Assignee Philips Lighting Holding B.V., Eindhoven (NL)

Claim of US Patent No. 9,557,016

1. A lighting unit comprising:
a first light source configured to generate first light source light,
a second light source configured to generate second light source light having a spectral distribution different from the first
light source light,

a first wavelength converting element able to convert at least part of one or more of the first light source light and the
second light source light into first wavelength converting element light,

a second wavelength converting element able to convert at least part of one or more of the first light source light, the second
light source light, and the first wavelength converting element light into second wavelength converting element light having
a spectral distribution different from the first wavelength converting element light,

wherein the lighting unit further comprises a transport infrastructure configured to arrange the first light source, the second
light source, the first wavelength converting element, and the second wavelength converting element in a first configuration
or a second configuration by transport of one or more of these,

wherein in the first configuration and the second configuration the lighting unit provides lighting unit light having substantially
the same color point while having different color rendering indices.