LED lighting: A new technology is transforming tunable white light solutions

Tunable white LED is one of the key elements of people-oriented lighting. To this day, there are currently different solutions available, but none are easy to apply or cost-effective enough to accelerate the proliferation of human-centered lighting in building projects.

Before moving into new tunable white light technologies, it is necessary to examine the shortcomings of traditional tunable white light solutions to fully grasp the latest advances in color adjustment technology. Since the beginning of LED lighting, it has been known that LED lamps can offer different light colors as their potential applications have expanded. While adjustable white light lighting has become one of the biggest trends in commercial lighting, the demand for efficient and economical adjustable white light lamps is on the rise. Let's take a look at the problems with traditional tunable white light solutions and how new technologies are revolutionizing the lighting industry.

The problem of traditional adjustable white light source

In traditional LED light sources, surface-mounted leds with separate lenses are scattered over a large circuit board area, with each light source clearly visible. Most adjustable white light solutions combine two sets of leds: one in warm white and one in cold white. White between two color dots can be created by raising and lowering the output of two color leds. Mixing colors at both ends of the CCT range on a 100-watt luminance can result in a loss of up to 50% of the total lumen output of the light source because warm and cool leds are inversely proportional to each other. To get a full output of 100 watts at 2700 K or 6500 K color temperatures, twice as many lamps are required. In traditional tunable white light designs, it provides inconsistent lumen output across the entire CCT range and loses lumen intensity when mixing colors to the two extremes without a complex control mechanism.

Another key element of adjustable white light is the control system. Many times, adjustable white lamps can only be paired with specific drives, which can cause incompatibility issues for retrofitted or existing projects with their own dimming drives. In this case, expensive independent control systems need to be specified for adjustable white light fixtures. Since cost is often the reason for not specifying adjustable white light fixtures, independent control systems make adjustable white light fixtures less feasible. Loss of light intensity during color mixing, poor light source visibility, and expensive control systems in traditional tunable white light solutions are common reasons why tunable white light fixtures are not used more often.

While traditional adjustable white light solutions require an increase in the number of lamps to match the output of monochrome lamps, the new unique design and proprietary control panel provide maximum lumen output during color adjustment. Its ability to maintain up to 10,000 consistent lumen outputs during color mixing from 2700 K to 6500 K is a new advance in the lighting industry. Adjustable white light features are no longer limited to low-wattage commercial Spaces. Large projects with ceiling heights over 80 feet can take advantage of the versatility of multiple color temperatures.

With this new technology, candlelight requirements can be met without doubling the number of lamps. With minimal additional costs, tunable white light solutions are now more feasible than ever. It also allows lighting designers to have complete control over the color temperature even after lighting is installed. Color temperature decisions are no longer needed at the planning stage because with new advances, on-site adjustable CCT becomes possible. There is approximately 20% additional cost per fixture and no CCT limitation for any project. The project owner and lighting designer have the flexibility to adjust the color temperature of the space to suit their needs.

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