Human Centric Lighting: bringing people, daylight and use together

Human Centric Lighting considers emotional and non-visual effects alongside vision. Start with the people using the room: their activities, time spent there, daily schedules and ability to adjust the light. Daylight is an important part of the concept.

Variable colour temperature alone is not a complete HCL solution. Light quantity, spectrum, spatial distribution and timing work together. Conventional needs such as sufficient illumination, glare control and colour rendering must still be met. An impressive automatic colour change is therefore not the primary design objective.

Clear scenes, personal adjustment and appropriate commissioning support everyday use. Shift work requires careful consideration of work and rest schedules. A particular kelvin setting does not establish a general health or productivity benefit. Develop the concept for the actual application and review its operation with users.

What to clarify for your project

• Record occupancy, activities and daylight conditions.
• Define visual quality and non-visual objectives separately.
• Coordinate controls and schedules with users.

Remember: HCL is a design approach rather than a single product feature.