Keinovalaistus

Keinovalaistus refers to artificial light sources used to illuminate an area. This encompasses a wide range of technologies designed to produce light for practical purposes, such as enabling visibility, creating ambiance, or facilitating specific tasks. Historically, artificial light has evolved from simple fire and torches to more complex technologies like incandescent bulbs, fluorescent lamps, and currently, energy-efficient LED (Light Emitting Diode) lighting.

The primary function of keinovalaistus is to extend the period of human activity beyond daylight hours. This is crucial for public safety, enabling transportation, supporting industries, and enhancing residential comfort. Different types of keinovalaistus serve various needs. For instance, street lighting focuses on broad illumination for safety and navigation, while task lighting is designed for specific work areas requiring higher intensity. Decorative lighting, on the other hand, is used to enhance aesthetics and create atmosphere.

The choice of keinovalaistus technology is often influenced by factors such as energy efficiency, cost, lifespan, color rendering quality, and environmental impact. LED technology has become increasingly dominant due to its superior energy efficiency, long lifespan, and versatility, leading to reduced energy consumption and lower electricity bills. Proper design and implementation of keinovalaistus are important to avoid light pollution, which can negatively affect ecosystems and astronomical observations.