Abstract: White light luminaire for everyday activities that regenerates the retina of the eye in real time, damaged by blue light, contains at least one blue chip covered by a luminophore with the maximum of the radiated energy at the wavelength ?=670 to 680 nm, whereas the ratio between the blue spectral component from the wavelength range 400 to 490 nm and the green spectral component from the wavelength range 490 to 570 nm is 1:1.6 max., or the ratio between the green spectral component from the wavelength range 490 to 570 nm and the red spectral component from the wavelength range 570 to 780 nm is 1:3 min.

Abstract: A subject of the invention is the source of LED lighting that improves human cognitive performance during work activities or in any activity and simulates sun radiation in the biologically beneficial range 460 to 660 nm, for more than 90%. The whole system of the LED lighting source is set in such a way that 4.5 to 6% of blue and turquoise light radiation is added to the light radiation emitted from white LED chips, and it is advantageous if of equal radiation intensity. This measurement will provide for balancing of radiation intensity to 90% of the sunshine level. The generated combined light radiation of the cognitive LED lighting source has CRI 98 and correlated colour temperature 4000 to 4700 K, the sun radiation has correlated colour temperature 4982 K and CRI 99.5.

Abstract: An LED exterior luminaire comprising light-emitting diodes (LEDs) with a circadian-adjustable light output mode for its medical safety comprises at least two switchable LED chip chains I and III, wherein chain I comprising at least one LED chip emitting orange light from a wavelength range of 580 nm to 610 nm and at least one LED chip emitting red light from a wavelength range of 610 nm to 700 nm, chain III comprising at least one blue LED chip overlaid with a luminophore emitting a continuous band spectrum of visible light from a wavelength range of 440 nm to 700 nm and a correlated color temperature CCT of 2200 to 4200 K, wherein chains I and III are each separately connected to a power source via a dimming ballast that regulates the proportion of input current to each chain separately.

Abstract: An LED exterior luminaire comprising light-emitting diodes (LEDs) with a circadian-adjustable light output mode for its medical safety comprises at least two switchable LED chip chains I and III, wherein chain I comprising at least one LED chip emitting orange light from a wavelength range of 580 nm to 610 nm and at least one LED chip emitting red light from a wavelength range of 610 nm to 700 nm, chain III comprising at least one blue LED chip overlaid with a luminophore emitting a continuous band spectrum of visible light from a wavelength range of 440 nm to 700 nm and a correlated color temperature CCT of 2200 to 4200 K, wherein chains I and III are each separately connected to a power source via a dimming ballast that regulates the proportion of input current to each chain separately.

Abstract: The invention application deals with the LED light having at least two simply switchable lighting modes. The first mode quite eliminates the blue wavelength light which is harmful to human organism at night. It's recommended to always turn this light on after nine in the evening and use it until the sunrise. The second mode already has a low blue wavelength content, being suitable during afternoon hours and relaxation. The third mode already represents the daily sunlight with a high CRI value and should be used during day only. The mode switching is set in a way that after turning the light off and then on again, the first mode with monochromatic red colour will light first, thus the circadian rhythms are not affected at each wakeup and turning on the light.

Abstract: A subject of the invention is the source of LED lighting that improves human cognitive performance during work activities or in any activity and simulates sun radiation in the biologically beneficial range 460 to 660 nm, for more than 90%. The whole system of the LED lighting source is set in such a way that 4.5 to 6% of blue and turquoise light radiation is added to the light radiation emitted from white LED chips, and it is advantageous if of equal radiation intensity. This measurement will provide for balancing of radiation intensity to 90% of the sunshine level. The generated combined light radiation of the cognitive LED lighting source has CRI 98 and correlated colour temperature 4000 to 4700 K, the sun radiation has correlated colour temperature 4982 K and CRI 99.5.

Abstract: The invention application deals with the LED light having at least two simply switchable lighting modes. The first mode quite eliminates the blue wavelength light which is harmful to human organism at night. It's recommended to always turn this light on after nine in the evening and use it until the sunrise. The second mode already has a low blue wavelength content, being suitable during afternoon hours and relaxation. The third mode already represents the daily sunlight with a high CRI value and should be used during day only. The mode switching is set in a way that after turning the light off and then on again, the first mode with monochromatic red colour will light first, thus the circadian rhythms are not affected at each wakeup and turning, on the light.