Abstract: Backlighting device for a screen for a television, mobile phone or the like, which includes a first light source adapted to emit light having a peak wavelength between 600 and 630 nm; a second light source adapted to emit light having a peak wavelength between 510 and 530 nm; a third light source adapted to emit light having a peak wavelength between 440 and 460 nm; and the light emitted by one of the light sources has a bandwidth of less than 15 nm, preferably less than 10 nm, more preferably less than 5 nm.

Abstract: Backlighting device for a screen for a television, mobile phone or the like, wherein the backlighting device comprises: a first light source adapted to emit light having a peak wavelength between 600 and 630 nm; a second light source adapted to emit light having a peak wavelength between 510 and 530 nm; a third light source adapted to emit light having a peak wavelength between 440 and 460 nm; wherein the light emitted by one of the light sources has a bandwidth of less than 15 nm, preferably less than 10 nm, more preferably less than 5 nm.

Abstract: A lighting configuration for providing improved vision acuity includes a first light source emitting light having a first wavelength peak in the range from 500 to 530 nm; a second light source emitting light having a second wavelength peak in the range from 600 to 640 nm; and a third light source emitting light having a third wavelength peak in the range from 440 to 460 nm. The radiated power at 555 nm is less than 15% of the radiated power at the wavelength of the second wavelength peak. The light configurations are characterized by an S/P ratio between 2 and 5. Optionally the radiated power at 480 nm is at least 20% of the second wavelength peak. The light sources used in the lighting configuration can be LEDs, preferably LEDs that are substantially free of a color conversion layer.

Abstract: A light fixture is disclosed having a plurality of light sources belonging to at least two types emitting light of different S/P ratio. The light sources are placed in the light fixture so that the light fixture, when in use, emits a light bundle having varying S/P ratios within the bundle. In an embodiment the light bundle has a central area with low S/P ratio, and peripheral areas having higher S/P ratio. The S/P ratio in the peripheral areas can be as high as 5 or even higher. In an alternate embodiment the light bundle has a central area with relatively S/P ratio, and peripheral areas having lower S/P ratio. The S/P ratio in the peripheral areas can be as low as 2 or even lower. The light fixtures are particularly suitable for outdoor lighting, for example street lighting.

Abstract: A network is disclosed of a plurality of outdoor lighting units. Each lighting unit comprises a light fixture, for example a LED lamp; a power generating means, such as a solar panel or a wind turbine; and a storage means for electric energy, for example a battery. The energy storage means of neighboring lighting units are connected by a conductor. An imbalance in power generation or power consumption results in a balancing current through the conductor. The balancing current equalizes the charge levels of the energy storage means in the system. In an embodiment the conductor comprises a single core wire and ground.

Abstract: A lighting arrangement is disclosed having a first light source with a dominant wavelength in the range of 505 nm to 520 nm; and a second light source having a dominant wavelength in the range of from 580 nm to 630 nm. The lighting arrangement has at least one control means for adjusting the output of the first light source independent from the light output of the second light source. The control means allows for providing an optimum spectral balance under varying luminance levels.

Abstract: A light fixture is disclosed having a plurality of light sources belonging to at least two types emitting light of different S/P ratio. The light sources are placed in the light fixture so that the light fixture, when in use, emits a light bundle having varying S/P ratios within the bundle. In an embodiment the light bundle has a central area with low S/P ratio, and peripheral areas having higher S/P ratio. The S/P ratio in the peripheral areas can be as high as 5 or even higher. In an alternate embodiment the light bundle has a central area with relatively S/P ratio, and peripheral areas having lower S/P ratio. The S/P ratio in the peripheral areas can be as low as 2 or even lower. The light fixtures are particularly suitable for outdoor lighting, for example street lighting.

Abstract: A lighting arrangement is disclosed having a first light source with a dominant wavelength in the range of 505 nm to 520 nm; and a second light source having a dominant wavelength in the range of from 580 nm to 630 nm. The lighting arrangement has at least one control means for adjusting the output of the first light source independent from the light output of the second light source. The control means allows for providing an optimum spectral balance under varying luminance levels.