LED lights with adjustable colour temperature
Tunable-white lighting is a prevalent trend in both business and residential illumination. Due to the comprehensive photo-biological research conducted by many academic and scientific institutions, our understanding of human functioning has significantly advanced. LED developers and the community have clearly shown interest in human interaction with ambient light. The scientific evidence underscores the necessity for tunable white technology, and thankfully, light-emitting diodes (LEDs) provide the most feasible solution.
Tunable White Lighting refers to a lighting system that allows for the adjustment of colour temperature, enabling the user to modify the warmth or coolness of the light emitted.
Tunable white light refers to the capability to regulate the colour temperature output of a light source. Various phrases may also relate to tunable white LEDs, including custom temperature, dim to warm, dynamic/hybrid white, or changeable white lighting.
Tunable white illumination is produced by fabricating the light source using LEDs of varying colour temperatures. Integrating this with a remote control or employing an external control system will enable the user to pick and adjust their preferred white colour temperature in real time.
BRIEF UPDATE – What is colour temperature or correlated colour temperature (CCT)?
Suppose you visit the store to procure a replacement bulb for the one that has burned out in the storage closet. Upon locating the bulbs, those on the shelf will be categorised using several descriptors: warm or cold, daylight or natural, brilliant or soft whites. These designations refer to the colour temperatures emitted by the light. These names might vary significantly and are mostly utilised for marketing objectives. The hue of white may be measured by the associated colour temperature (CCT).
CCT refers to the colour temperature of light, quantified in degrees Kelvin (K). The temperature rating of a light immediately influences its appearance to the observer. The majority of LEDs are located within the 2700K to 6500K spectrum. Temperatures within the range of 2700-3000K are classified as "warm white" lighting. Warm white seems more orange and/or yellow, like the light emitted by typical halogen or incandescent bulbs. As the Kelvin temperature rises, the colour transitions from yellow to yellowish white to natural white (4000K) and subsequently to a colder, bluish white (6500K), referred to as cool white.
Tunable White refers to the process of colour mixing.
The name RGB has become prevalent for color-changing LED lighting. These lights utilise red, green, and blue LEDs to achieve colour mixing and produce a whole range of colours. Tunable whites operate similarly, employing different white colour temperatures to modulate the light from a warm to a cold tone.
Similar to other lighting technologies, tunable-white lighting systems exhibit varying degrees of quality and sophistication. It is essential to comprehend the illumination needs as well as the contributions of other systems in comparison.
Basic Adjustable White Systems - Dual Channel Light Emitting Diodes
The most basic white tuning systems utilise a combination of warm and cool white LEDs and enable dimming between the two. There will generally be one channel of LEDs at 2700K and another channel with LEDs closer to 6000-6500K. These diodes are generally closely arranged with a diffuser placed above them to facilitate colour mixing as light transits through. This approach of tunable white lighting is secure and straightforward; nevertheless, it caters primarily to a basic market and does not deliver optimal light quality across the spectrum.
Enhanced Quality Multi-Chip Systems - Integration at the Chip Level
Colour Rendering – Quality of Significance!
One of the significant concerns in the lighting industry is how white light affects the perception of surface colours. High-quality colour rendering is crucial, irrespective of the light source, and tunable whites are not an exception to this principle. Numerous manufactures promote exceptional performance at their limits, nevertheless the intermediate colours are inadequately blended.
It is essential to seek producers committed to maintaining superior colour quality throughout all segments of the spectrum. Industry leaders are starting collaboration on adjustable white lighting to replicate sunshine. This entails ensuring that CCT adheres to the blackbody curve as nearly as feasible. Innovative technology is being developed to integrate a green light into a tunable system, enabling it to adjust the Correlated Colour Temperature (CCT) to align with the Blackbody Line. Generally, an increased number of channels in a tunable system enhances the appearance of colours underneath them.
The Blackbody line (BBL) is derived from the hue emitted by a heated dark iron metal at a specific temperature. LEDs are categorised based on this line, and it is desirable to remain as near to the line as feasible.
Understand Your Spectrum - Varied Colour Temperatures
Consistently monitor the spectrum of whites that a light source provides. Certain systems provide an extensive natural 'circadian rhythm' spectrum that transitions from candlelight to daylight, while others function within a more limited range of 2700-4000K. Smaller range lights serve primarily ornamental functions, whereas full range natural lights are designed to maximise the associated advantages.
What are the advantages of tunable white lighting?
Numerous factors may need alterations to the lighting in your residence, workplace, or business establishment. As methods of lighting control have proliferated, many individuals now anticipate the ability to modify illumination to a certain degree. This is not only convenient but also advantageous in several critical aspects:
Your Health – Circadian Rhythm and Illumination
Enhanced Efficiency
Enhanced Design Control Manipulation of Circadian Rhythm by Light
The circadian rhythm functions as the body's internal clock. Our bodies inherently recognise when to awaken and when to rest. Throughout the day, the human body is expected to follow a natural rhythm that regulates attention, sleep, and eating behaviours. Research on this phenomenon has demonstrated that the intensity, timing, duration, and wavelength of light may influence the human biological clock.
This cycle is readily disrupted due to the prevalence of illuminated objects in our surroundings. Have you encountered the numerous research indicating that using your phone prior to sleep adversely affects sleep quality? Indeed, that pertains to circadian rhythm. The intense cold white light directly before sleep is detrimental to circadian rhythm. Disruptions in this cycle may lead to various health complications including sleep difficulties.
NOTE - Research indicates that correlated colour temperatures over 5500K might interfere with our circadian clock, preventing natural sleep onset. Consequently, phones, computers, and television screens have begun to incorporate night mode, which emits a warmer tone. Employ this to the fullest extent!
Our bodies exhibit heightened alertness and wakefulness in brighter, cooler lighting, whereas they tend to be more tranquil and relaxed in warmer white illumination. This pertains to the natural illumination throughout the day. Mornings start at elevated colour temperatures, thereafter rising to 6500K around lunchtime, before declining down to warm white as night approaches.
Tunable white LED lighting enables adherence to our natural circadian rhythm by providing a spectrum of illumination in both residential and occupational environments. Throughout the day, maintain a colour temperature of 6000K to be alert and productive; when night approaches, reduce the correlated colour temperature to around 3000K for relaxation. This facilitates the natural release of melatonin to promote sleep.
Tunable white LED lighting not only mitigates health risks but also facilitates the restoration of good habits and normalcy when outside access is limited. Numerous hospitals and educational institutions have begun the use of this in patient rooms and classrooms, with intriguing findings.
Chill White Illumination Warm White Light – Enhances healthy appetite – Decreased Hormone Levels – Elevates body warmth – Soothes the body – Accelerates heart rate – Facilitates improved relaxation and recovery – Enhances cognitive function
Enhanced Efficiency
Optimal lighting enhances our diligence and boosts production. The capacity to adjust lighting based on the requirements or ambiance of a space has a significant effect and can be beneficial in various circumstances.
Research indicates that various surroundings can enhance alertness through colder lighting and transition to warmer lights in the evening or during relaxation periods. The following locations utilise adjustable white lighting:
Residential Dwellings Educational Institutions Medical Facilities
Medical Institutions
Retail Establishments Corporate Offices
About our company
Shenzhen Benwei Lighting Technology Co., Ltd is a well-known company that designs, develops, makes, and sells high-tech goods, including LED lighting products. The plant where we work opened in 2010 and is in Shenzhen.
Our address
3rd Floor, 5th Building, Hebei Industrial Park, Hualian Community, Longhua District, Shenzhen, China
