Lighting fixtures consist of a light source, a lampshade, and accessories.
A. Lighting fixtures are divided into two categories based on their function: decorative lighting fixtures and functional lighting fixtures.
1. Decorative lighting fixtures are a combination of decorative elements and a lighting source. In addition to appropriately considering lighting efficiency and glare prevention, the main purpose is to meet the needs of architectural art and aesthetics.
2. The function of lighting fixtures is to redistribute the luminous flux of the light source, improve the efficiency of light use, avoid glare, and create a suitable lighting environment. In special environments such as humid, corrosive, explosive, and flammable environments, the lampshade also plays a role in isolation and protection.
Secondly, lighting fixtures are divided into two categories according to their use: indoor lighting fixtures and outdoor lighting fixtures.
1. Indoor lighting fixtures are usually classified according to the proportion of total luminous flux distribution in the upper and lower hemispheres of the space. Based on this, the International Commission on Illumination (CIE) suggests that lighting fixtures are divided into five types: direct, semi-direct, diffuse, semi-indirect, and indirect. The table below shows the light distribution and lighting characteristics of different types of fixtures.
2. Outdoor lighting fixtures mainly include floodlights. Floodlights, also known as floodlights, are high-intensity light sources that use reflectors, lenses, and grids to confine light within a small three-dimensional angle. They are commonly used for nighttime illumination of large buildings.