LEDs are point sources that differ from current energy-saving lamps or incandescent lamps on the market. Point light source, as its name suggests, is a point of light, and this point of light also has another important feature, that is, only one side has light (all traditional back reflectors have no meaning for the LED itself). If we want to use this special light for lighting, we must process this light to meet our requirements and objectives, so we need to add optical design to change this relatively concentrated point source. It has a certain angle of astigmatism, which is known as the straw hat LED. The straw hat LED is a kind of package that is professionally used for lighting design. On the one hand, it can change the light from a concentrated point source to a certain angle. The light source, on the other hand, has less light decay and allows more light to be transmitted for us.
Although the straw hat LED has a qualitative leap in optical angle, it is still a point light source compared to the familiar surface light source. Because its brightness is too concentrated, if the human eye directly looks at the light source, it will still be ours. The eyes cause some damage. Therefore, in the application of LED lighting in home lighting, we have to further process its light, and then add a certain optical design to achieve the purpose of direct observation by the human eye, while softening the light, on the other hand, we must zoom in again. Irradiation angle, although the straw hat LED itself has been in the 120 degree range, but if it is directly applied to the home lighting, it gives us the feeling that the roof is black, we need to use the outermost transparent cover of the lamp to disperse the light again. To adapt to normal home lighting.
The difference between high power and low power LED
With the continuous development of LED technology , people have developed a single LED chip with more and more power to adapt to large-area lighting. At present, the world's most advanced edge can achieve a single LED power of more than 200W, although the power can be very Big, but its price/performance ratio is not good. Let's take an analysis of several common LEDs as an example.
At present, a large number of 0.06W power is used in the industry. The maximum brightness can be 7LM. We will calculate the 6LM according to the normal time. If we want to achieve 1W, we need 17 identical LEDs. It is 17*6=102LM, which means 100LM/W can be achieved. If we use a single chip for 1W power, the output brightness is up to 80LM, and the commonly used one is about 60LM, which is a brightness. The main difference, it can be seen that for home use, we still have to choose a low-power LED is more appropriate.
From the perspective of product cost, the cost of high-power LED is higher than the cost of low power. This comes from two aspects, one is the cost of LED itself, and the other is high-power LED with aluminum heat sink. The board, plus natural cooling, can meet the requirements.
From the point of view of the future maintenance cost of the product, if our luminaires fail during use, we can find any electrical repair shop to replace the damaged LED. A 0.06W LED costs up to 1 yuan, plus the maintenance cost does not exceed 5 yuan, if it is to replace a 1W LED, LED cost will be 8 yuan, plus maintenance costs will be about 15 yuan. Relatively speaking, a small power LED market can be purchased in an electronic market, and high power can not be bought anywhere.
LED power to high power is a market trend and the mainstream of future development, but at present it is not yet suitable for home lighting because it has not yet reached the desired result in terms of technology.
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