Human Centric Lighting and its effectiveness

Light is the source of well-being

Circadian-friendly lighting sequences through the course of the day

Light always has multifaceted effects, visually, emotionally and biologically.

Human Centric Lighting:

“Lighting specifically designed to produce a beneficial physiological and/or psychological effect upon humans.“

Human Centric Lighting (HCL) supports human health, well-being and performance through deterministic and holistic planning and implementation of the visual, emotional and, in particular, biological effects of light. The predominant focus of Human Centric Lighting is the needs of a human being of their living, leisure, and work environments. The interdisciplinary balance between the parameters of artificial lighting, natural daylight, architecture and technology creates the right light at the right time for each use.

Decades of research confirm the interplay between work surroundings and health

Light has a significant influence on our mood and ability to concentrate

Decades of research have shown that light has a significant influence on our mood and ability to concentrate – and one of most important aspects of good lighting is timing. Our brain regulates the circadian rhythm of the body based on “light signals” from our environment. The circadian rhythm controls our energy level, mood and sense of alertness or sleepiness. When our inner clock no longer functions synchronously with the time of the day we become agitated and our reactions slow down – we are less attentive and it becomes more difficult to concentrate.

Adapting light colour and intensity during the course of the day

To implement an adequate Human Centric Lighting solution in the survey Osram installed a time-controlled lighting system with a circadian-friendly light sequence, meaning the luminaires adapt their light colour and intensity during the course of the day. Several light sources were aligned onto the walls to create high vertical illuminance levels. Luminaires suspended from the ceiling in the open office area generate a pleasant indirect light component and avoid glare. In total, the luminous intensity was almost doubled.

OSRAM proves its expertise in Human Centric Lighting concepts

Watch video!

A balanced internal clock

The principle: "Dynamic daylight supports humans in all areas."

An interview with Andreas Wojtysiak, OSRAM Innovation, and the OSRAM product managers Nicolai Heber and Peter Bach

"A biological impact is primarily achieved by utilizing the control phenomena of light that coordinate our bodily functions. These include day/night control or activating effects on the central nervous system. Due to evolution, our biological functions and processes are mainly based on our roots in Central Africa – meaning a rhythm with 12 hours of day and 12 hours of night. Our biological system, our internal clock, so to speak, has only partially adapted to life in our corner of the world, where the length of a day changes between summer and winter."

Read the full interview here

The products: Scriptus luminaire range for Human Centric Lighting in offices


The Scriptus range of luminaires fulfils all functional and aesthetic standards for Human Centric Lighting. The separately controllable direct and indirect distribution light units guarantee users high levels of individuality for personal settings and maximum visual comfort. In addition to 3000K and 4000K light colours, versions with Tunable White (TW) are also available. Blue light distribution can be individually set across the course of the day via the separately controllable TW white component in the direct and indirect components.

The Scriptus series of LED luminaires convinces with a modern, progressive design and was distinguished with the coveted iF Design Award 2017.

Scriptus for Human Centric Lighting

The solution: Modern lighting that focuses on people

The right light makes work easier

The illumination of office spaces and office workstations designed according to the specific tasks and activities verifiably contributes to improved creativity and productivity. It is easier to concentrate in good visual conditions, and habitats and light atmospheres deemed to be pleasant also achieve a greater sense of well-being and motivation.

The minimum requirements for professional office lighting are regulated via clear normative stipulations. Europe for example uses the EN 12464-1 standard. Various quality criteria such as illuminance, uniformity, glare control and contrast sensitivity define the quality of light.

More information on Human Centric Lighting solutions