Yleisvalaisussa

Yleisvalaisussa is a Finnish term used in lighting design to denote general or ambient illumination in a space. It refers to the overall brightness and distribution of light that makes a space comfortably visible without focusing on specific tasks or features. Yleisvalaisussa aims for uniform light levels and minimal glare, creating a baseline layer of illumination that supports everyday activities.

In practice, yleisvalaisussa is distinguished from other lighting approaches such as task lighting (tehtävävalaistus), which concentrates light on particular activities, and accent lighting (korostusvalaistus), which highlights architectural features or objects. A well-designed yleisvalaisussa balances direct and indirect light, often combining ceiling-mounted, recessed, or diffuse luminaires with reflective surfaces to achieve even coverage.

Key considerations in planning yleisvalaisussa include light quality, measured by color rendering (CRI) and color temperature, as well as energy efficiency. Typical color temperatures for general indoor lighting range from warm white (around 2700–3000 K) to neutral or cool white (around 3500–4000 K), depending on the space and user preferences. Illuminance targets for yleisvalaisussa vary by setting; offices commonly aim for around 300 lux on the workplane, while living areas may use lower levels, supplemented by task or accent lighting as needed. Daylight integration and glare control are important, with diffuse or indirect lighting often preferred to avoid harsh contrasts.

Standards governing yleisvalaisussa follow European and national guidelines for indoor lighting, emphasizing safe, comfortable visibility, energy efficiency, and appropriate light distribution. In modern Finnish practice, yleisvalaisussa forms the foundational layer of lighting design, enabling flexible use of spaces while supporting visual comfort.