PAL: The true to life light source – red stays red, yellow stays yellow, green stays green.
Museum lighting today – a very complex challenge
The premium requirement is to conserve valuable pictures and exhibits, to ensure that a minimum of UV, IR, heat and light is directed at them, for example. At the same time, the purpose of a museum is to present works of art optimally, and this demands effective lighting of a very high quality.
Minimising deterioration to exhibits
What we see is reflected light; what damages sensitive artworks is the absorbed light. This damage can be caused by different parameters, such as the energy contained in the light source, the material and condition of the target surface and the duration of light-exposure. UV, visible and infrared light can cause damage; on the other hand, visible light is needed to see. Conventional light sources, one of those being daylight, contain UV, IR or both. Protective filters do not cut the whole quantity of damaging energy, but they significantly reduce the intensity of the visible light. This then leads to extra energy consumption and production of unnecessary heat in the museum, which needs again to be extracted.
PAL – perception adaptive LED light source
PAL is a highly efficient and precision true white LED light source with variable colour temperature, specified by Regent Lighting, and based on the stringent requirements of museum- and conservation lighting. Thanks to PAL – emitting neither UV nor IR – it is possible to use the advantages of the LED- technology and to see all colours naturally, in true light. The PAL-technology is not based on RGB or conventional white LED-concepts; PAL is a true white light source, simulating the quality of daylight. With PAL the colour rendering index CRI is always >90, throughout the entire colour spectrum from 2,700K – 6,500K. The colour rendering and colour temperature of PAL remain stable even when dimming (1% – 100%) during its entire lifetime.
PAL – the ideal light spectrum for all artworks
The PAL LED circuit boards integrated into the Regent luminaire PAL Beamer 1.1 have a high quality colour rendering and a continuous emission spectrum. The required white-nuances for each exhibit, considering at the same time the desired room ambience, are produced optimally and individually. With the continuously variable colour temperature from 2,700K – 6,500K (manually on the projector by step-less controls, or with the group control function via notebook/PC) there is flexibility in the lighting of sensitive exhibits, as well as in adapting to temporary exhibitions with adjustable colour concepts for the exhibition room background walls. When a warm white temperature is selected, the cool nuance colours will still be recognised, in a lower intensity, but unaltered, and still with a CRI >90.
PAL – low energy consumption thanks to high efficiency (up to 70lm/W)
PAL offers a very long life time (50,000h) at very low energy consumption. The light output always stays between 60lm/W and 70lm/W, which far exceeds the performance of halogen lamps and even reaches the efficacy of fluorescent lamps.
- True colour CRI >90
- Variable in both colour temperature (2,700K – 6,500K) and intensity (1% – 100%)
- Constant retention of high efficiency 60lm/W – 70lm/W
PAL – true to life, efficient and caring LED Lighting for the conservation environment