LED bulb characteristics and light-emitting principle
characteristic
I. Energy saving research data show that because LED is a cold light source, semiconductor lighting itself does not have any pollution to the environment. Compared with incandescent and fluorescent lamps, the power saving efficiency can reach more than 90%. At the same brightness, the power consumption is only 1/10 of that of ordinary incandescent lamps, and 1/2 of that of fluorescent tubes.
Second, the health LED is a green light source. LED lights are driven by DC, no flicker; no infrared, ultraviolet components, no radiation pollution, high color rendering, strong light directivity; good dimming performance, no visual error when the color temperature changes; low heat, safe to touch; this is Incandescent and fluorescent lamps cannot reach. It can not only provide comfortable lighting space, but also meet the needs of people's health. It is a healthy light source, protects eyesight, and is environmentally friendly. Due to the low power and low brightness of a single LED, it is not suitable to be used alone, and assembling multiple LEDs into practical LED lighting fixtures has broad application prospects. Luminaire designers can determine the shape of the luminaire's optical system, the number and power of LEDs, according to the needs and luminous flux of the lighting object. It can also combine several LED light-emitting tubes to design a "secondary" of a point light source, ring light source or area light source "Light source", the lamp is designed according to the combined "secondary light source".
3. Artistic light color is the basic element of visual aesthetics and an important means to beautify the living room. The choice of light source directly affects the artistic effect of light. LEDs show unparalleled advantages in the art of light-colored display lights; color LED products cover the entire visible spectrum with good monochromaticity and high color purity. The combination of yellow LEDs provides greater flexibility in choosing colors and grayscales (16.7 million colors). Lamps are luminous sculptures, and the material form of lamps, which consist of materials, structures, shapes and textures, is also an important means of displaying art. LED technology enables indoor lighting to better combine science and artistry, breaking the boundary frame of traditional lighting and transcending the inherent concept of so-called lighting forms. A new perspective to understand, understand and express the subject of light. It can more flexibly utilize the advantages of light and dark, the combination of light and color in optical technology, material and structural design, and improve the design freedom to weaken the lighting function of the lamp.
Humanization There is no doubt that the relationship between light and people is an eternal theme. "People see lights, I see light". It's this classic saying that has changed countless designers' understanding of lights. The highest light fixture is the highest embodiment of "shadowless light" and humanized lighting. There are no common lamps in the room, which make people feel bright, but can't find the light source
luminous principle
In terms of structure and light-emitting principle, light-emitting diode bulbs are fundamentally different from traditional incandescent lamps. Diodes are common components in electronic circuits. It is made of semiconductor PN junction, plus electrode lead and shell. A diode has two electrodes, so it is called a diode. Diodes have unidirectional conductivity. There are many types of diodes such as detector tubes, rectifier tubes, voltage regulator tubes, switching tubes, damping diodes, light-emitting tubes and photo tubes.
Light-emitting diodes are usually made of semiconductor materials such as gallium arsenide and gallium phosphide. They glow when a forward current is passed through them. The color of the light-emitting diode depends on the material used. It emits red, yellow, green and infrared light. LEDs are usually encapsulated in clear plastic, with the long lead serving as the positive pole and the short lead serving as the negative pole. Some LEDs have three pins and can emit two colors of light depending on the pin voltage.
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