A HORTICULTURE LIGHTING DEVICE AND A METHOD TO STIMULATE PLANT GROWTH AND BIO-RHYTHM OF A PLANT

摘要

The present invention relates to a lighting device (100) to stimulate plant growth and bio-rhythm of a plant. The lighting device (100) comprising a solid state light source (102) arranged to emit direct red light having a wavelength of 600 to 680 nm, preferably 640 to 680 nm, and a wavelength converting member (106) arranged to receive at least part of said direct red light emitted from said solid state light source (102) and to convert said received direct red light to far-red light having a maximum emission wavelength of 700 to 760 nm, preferably 720 to 760 nm.

主权项

1. A horticulture lighting device, comprising a solid state light source arranged to emit direct red light having a maximum emission wavelength of 600 to 680 nm, preferably 640 to 680 nm, and a wavelength converting member arranged to receive at least part of said direct red light emitted from said solid state light source and to convert said received direct red light to far-red light having a maximum emission wavelength of 700 to 760 nm, preferably 720 to 760 nm wherein a ratio of said direct r-d to said far-red emitted from said lighting device is set by adjusting the fraction of said direct red light impinging on said wavelength converting member from said solid state light source.