Häikäisymittauksia

Häikäisymittauksia, or glare measurements, are a crucial aspect of lighting design and visual comfort assessments. They quantify the discomfort caused by excessive or poorly directed light in a specific environment. These measurements are typically performed using specialized instruments called glare meters or photometers that are sensitive to luminance distribution and spectral characteristics of light sources.

The primary goal of glare measurements is to identify and quantify potential sources of visual discomfort that can lead to eye strain, headaches, and reduced task performance. Different types of glare exist, including direct glare from a light source, reflected glare from shiny surfaces, and veiling glare that reduces contrast and visibility. Häikäisymittauksia aim to assess the degree to which these phenomena are present.

Several standards and guidelines exist internationally that define acceptable levels of glare for various applications, such as offices, schools, healthcare facilities, and outdoor spaces. These standards often specify limits for parameters like Unified Glare Rating (UGR), which is a widely used metric for assessing discomfort glare in indoor environments. Häikäisymittauksia help designers ensure that lighting installations meet these regulatory requirements and provide a visually comfortable and productive environment for users. The process involves careful placement of the measurement device to capture the luminance of the light sources and surrounding surfaces from the perspective of an observer.