No matter it is bedroom OR study, many owners can buy a desk lamp in the home now, this kind of lamps and lanterns is compact in size, convenient and flexible in use, bright enough, can be used as auxiliary light source, meet the use needs of our reading and learning. The ILLUMINANT OF DESK LAMP HAS A LOT OF KINDS, THE ACTION THAT DIFFERENT ILLUMINANT HAS TO THE EYE PLACE IS DIFFERENT, SOME ILLUMINANT CAN CAUSE CERTAIN STIMULATION TO THE EYE. What are the light sources of the lamp? Which light source is better? Let's follow the Wanzhuang network Xiaobian to understand what the lamp light source is!

What are the lamp light sources

1. Incandescent lamp

It is an early use of a light source, but also a more widely used light source. The main working principle is that the internal filament is heated to incandescent state by electricity, and then the electric light source of visible light is emitted by thermal radiation. Although the light efficiency of incandescent lamp is low, but its light color and light collection performance is very good. Because its filament has heat capacity, so when the power supply current is changing, its filament temperature change range is small, the luminance change that gives out light will not resemble fluorescent lamp (fluorescent lamp) so obvious. In addition, incandescent lamps are characterized by a continuous spectrum, close to the spectral characteristics of natural light, so incandescent lamps are a good light source for the eyes.

2. Traditional fluorescent lamp

This type of light source was more common in the past. It was also known as a fluorescent lamp. This type of light fixture was usually shaped as a thin cylindrical glass tube, which was white and opaque. The white substance in its tube is the phosphor that causes the light to glow, so it is called a fluorescent lamp. The light emitted by fluorescent lamps is white and flickering at a frequency of 100 times per second, twice the frequency of the power grid. The main changes that our human eyes can perceive are up to 30Hz, and although the 100 changes in light and dark per second of a fluorescent lamp are not perceived by us, these flickers have an effect on the human eye. Fluorescent lamp sources are not recommended for lamps.

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3, high frequency fluorescent lamp

Also known as CFLS, this light source uses an electronic frequency converter, which works by turning a 50-hertz alternating current into a high-frequency alternating current, which is then used to light the lamp. In the high-frequency lamp, the light source of energy-saving lamp changes tens of thousands of times per second, because the human eye has no time to change with it, it can not feel the change, so it is unchanged, in order to achieve the purpose of eye protection. Relatively speaking, high frequency fluorescent lamp will not produce harm to the human body, but in the household table lamp, the use is less.

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4, LED light source

This light source used is the power adapter, usually because it in the work of blue light intensity is higher, has certain harm to our eyes, and its common area is small, light chromatography is narrow, belongs to the monochromatic light source, to the optic nerve can cause certain influence, relatively dazzling, so the LED light source is not suitable for the high environment with its eyes. And its small lamp beads are easy to lose, there is a certain decay rate, easy to cause the whole table lamp scrap.