With the advancement in LED technology it is now possible to define, for general indoor applications, luminaire architectures comprised of multiple color LED chipsets that can be interlinked with new digital control strategies to tune the correlated color temperature of the white light. The Philips tunable white lighting system is one such unique solution that offers schools, offices, retailers and hospitals greater flexibility with the ability to easily change LED intensities and correlated color temperatures (CCT) from warm white (2700K) all the way to cool white (6500K). Through a combination of light quality, color, and intensity, the system helps create environments that can be tailored to an occupants’ needs and preferences at any given time.
To really understand the benefit of tunable white, it is important to appreciate the effect of light on our biological clock as it influences many aspects of our physical and emotional well-being. This biological clock is regulated by light and darkness, by the daily cycles of night and day and the time we spend asleep and awake. In our modern society, we spend much of our time indoors – at home, in a school, office, store or hospital. Those who have to stay indoors for significant parts of their time under static lighting conditions run the risk of disrupting their biological rhythms.
The dynamic feature of the Philips tunable white system tries to address this risk and allows users to automatically mimic daylight patterns by adjusting color temperature and brightness levels with respect to the time of day. Being able to mimic the natural cycle of daylight in our indoor environments can help support wakefulness and greater wellbeing of the occupants.
For other applications where mood settings with lighting is considered valuable, the scene set feature within the Philips tunable white system provides a combination of pre-programmed settings that instantly sets the scene for room ambiance to support the next scheduled task or spontaneous activity. For example, for functional activities, lighting can be adjusted to cooler temperatures and higher intensities to support concentration and focus. For activities requiring creativity and cooperation, lighting can be adjusted to warmer temperatures and lower intensities. Similarly, in a school environment, with a simple touch of a button, teachers can activate one of the presets and can easily change the lighting depending on the atmosphere in the class – be it a testing session or usual teaching sessions.
There is ample empirical evidence available through various research studies to support that giving people the ability to personalize their lighting setup helps to improve their satisfaction levels. The flexibility within system allows occupants to not only choose their preferred color temperature but also allows them to tweak the brightness levels to suit their comfort level.
In addition, the controls backbone can be extended to provide simple energy savings options like daylight harvesting and occupancy sensing and can also integrate with Philips Color Kinetics luminaires or with other building systems such as heating, ventilation and cooling for driving overall building efficiency performance parameters.
At Philips Lighting, we strive for solutions that matter to you and with the new tunable white system it is now possible to simulate some of the benefits of natural light in an indoor space for your general wellbeing.
For more information on Philips tunable white, visit: www.philips.com/tunablewhitetechnology