What are the types of illumination sources? According to the source of light, there are four kinds of lights commonly used in ordinary life: incandescent lamps, energy-saving lamps, metal halide lamps, LED lamps (light-emitting diodes). These lamps have their own advantages and disadvantages in use, and it is necessary to fully understand the performance of various lamps. Let's look at the types of illumination sources together with Xiaobian.
[Light source] What types of lighting sources are available?
According to the light source division, there are four kinds of lights commonly used in daily life: incandescent lamps, energy-saving lamps, metal halide lamps, and LED lamps (light-emitting diodes). These lamps have their own advantages and disadvantages in use, and it is necessary to fully understand the performance of various lamps.
Incandescent lamp
The biggest disadvantage of incandescent lamps is their short life. The use time is usually between 3,000 and 4,000 hours. Some incandescent lamps with poor quality can only be used for 1500 hours. Incandescent lamps in homes are often used in restaurants, bedrooms, etc., and look more comfortable.
Advantages: small light source, a wide variety of lampshade forms; large versatility, multi-color variety, directional, scattering, diffuse and other forms; can be used to enhance the stereoscopic effect of objects, incandescent light is closest to sunlight color.
Disadvantages: not environmentally friendly, when using incandescent lamps, 95% of the electricity is consumed in heating, only 5% of the electricity is truly converted into visible light; high heat temperature, fast heat evaporation, short life (1000 Hour), high infrared content, susceptible to vibration, low color temperature, yellow.
Scope of application: home restaurant, bedroom.
Metal halide lamp (halogen tungsten lamp)
Metal halide lamps are actually one type of incandescent lamps, and their life span is generally between 3,000 and 4,000 hours, and will not exceed 6,000 hours. This type of lamp can be used for accent lighting. For example, in order to highlight the decorative painting on the wall, the interior decoration, etc., it can be illuminated with a cold light cup. The white light of the lamp can be changed according to different home decoration styles, which is consistent with fashion.
Advantages: simple, low cost, easy adjustment and control of brightness, good color rendering.
Disadvantages: short service life, low luminous efficiency, filaments are prone to fusing under high temperature for a long time, and the failure rate is high.
Scope of application: car headlights, homes, offices, office buildings, etc.
Fluorescent lamp
Advantages: Energy saving, about 60% of the energy consumed by fluorescent lamps can be converted into ultraviolet light, and other energy is converted into thermal energy. Generally, the efficiency of converting ultraviolet light into visible light is about 40%. Therefore, the efficiency of the fluorescent lamp is about 60% x 40% = 24% - about twice that of the same power tungsten filament lamp.
Disadvantages: light decay occurs, fluorescent lamps are less colored than incandescent lamps; flashing lights have a certain impact on vision; in addition, mercury contamination occurs during production and after disposal.
Scope of application: indoor public spaces such as factories, offices, schools, supermarkets, hospitals, warehouses, etc.
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