| 摘要 |
FIELD: medicine.SUBSTANCE: group of inventions refers to medicine and medical engineering, in particular to lighting systems configured so to supply a desired light-induced physiological stimulus and a desired photic stimulus, and a method for controlling light to supply the stimuli. A system for light emission comprises a set of first light emitting elements for emitting the light of the first wavelength range, wherein the set of the first light emitting elements is capable to respond to a set of first control signals. This set comprises a first assembly of blue LEDs and a second assembly of blue LEDs, wherein the first set of blue LEDs has a first peak wavelength of approximately 440 nm and the second assembly of blue LEDs has a peak wavelength of approximately 480 nm. The system also comprises one or more second light emitting elements configured to emit light of a second wavelength range and to respond to one or more second control signals. The control system is functionally connected to the set of the first light emitting elements and to one or more second light emitting elements and is configured so as to generate the above set of the first control signals and one or more second control signals based on the desired light-induced physiological stimulus, the desired photic stimulus, the first wavelength range and second wavelength range. The control system is further configured to maintain the light emitted by the system according to the desired photic stimulus, varying independently the intensity of the first set of blue LEDs, the intensity of the second set of blue LEDs, and one or more second light emitting elements. A method for light control consists in the fact the first set of blue LEDs and a second set of blue LEDs generate light having the first wavelength range of the first intensity. The first set of blue LEDs emits light at a wave length of approximately 440 nm, and the second set of blue LEDs - light at wavelength of approximately 480 nm. Further, light having the second wavelength range at the second intensity is generated. The first and second intensities are adjusted to generate mixed light having the desired light-induced physiological stimulus and the required photic stimulus. Controlling the intensity of the sets of blue LEDs is independent thereby maintaining the desired photic stimulus.EFFECT: using the group of inventions enables the variable stimulus for synchronising individual's circadian rhythms.11 cl, 7 dwg |
