?1 Why the traditional light source has not been eliminated
There are three common types of projector light sources: traditional bulb sources, LED sources, and laser sources. In recent years, the diversification of the domestic projection market has become more and more obvious. Business offices, culture and entertainment, education and training, households, etc., the demand for projection equipment in many markets is increasing, and the required projection equipment parts and consumables are needed. More, and for projectors, the projection source is the largest consumable.
What do you know about the projection of the three sources?
The traditional projector bulb light source has not been eliminated after so many years, what are its benefits? There are several kinds of projector bulb light sources, metal halide lamps have low price, short life, generally no more than 2000 hours, and use 1000 hours. The brightness of the rear bulb will almost decay by half, and now it has gradually withdrawn from the ranks of the projection bulb. The UHE lamp is moderately priced. It is a kind of ultra-high pressure mercury lamp. It has a typical life of about 4,000 hours. It is generally used in low-end projectors, and the brightness after long-term use will not be attenuated too much, and the performance is relatively smooth. The UHP lamp, which is also an ultra-high pressure mercury lamp, is a bit higher in price, but it has high brightness and long service life. It is mostly used in higher-end projection products. Now UHP lamps are also frequently appearing in home projection products and commercial projection products. The amount of use has been getting higher and higher.
The brightness of the ultra-high pressure mercury lamp can be changed at will.
On the whole, the biggest advantage of the traditional light bulb source is the balance of brightness and price. The brightness of the projector often determines the performance of a projection product. The brightness of the traditional bulb source is much higher than that of the LED source. It can reach more than 3000 lumens, and it is not as expensive as the laser source in terms of price. From this point of view, the bulb light source still has great advantages.
What are the advantages of 2LED light source?
In recent years, the development of LED light sources has become more and more mature, and the price is getting lower and lower. In terms of projectors, the most important significance of LED lights is to open up a new path for the miniaturization of the fuselage, its portability and The simple operating system makes it fill the gaps that traditional projectors can't do, making the projectors of LED light sources more flexible and more portable.
LED light source projector
In terms of lighting, the biggest advantage of LED projectors compared to traditional bulb sources is their durability. The life of LED light sources is up to 20,000 hours, which is about ten times that of traditional projectors. It can be said that the projection device using the LED light source can basically realize that it is not necessary to change the light source for several years of use. The projection of the LED light source produces a lighter color with a higher color saturation than the bulb source.
LED projector light source light path diagram
The weakness of the LED light source is mainly because its brightness has a certain gap with the traditional light source, which is the main reason why the LED light source can not replace the light bulb light source. If you want to increase the brightness of the LED light source, you need to increase the volume of the LED light, so you lose it. LED light source has the advantage of being light and small, and the heat dissipation will become a difficult problem after the volume is increased. But overall, the LED light source is still a projection light source with great development potential.
3 high-priced lasers perform well
The laser is a light source that uses the photoelectric effect to cause the excited state particles to emit light under the action of stimulated radiation. The laser source is completely different from the bulb source and the LED source. First, the color of the laser is very pure, and its monochromaticity is more than 10 times higher than that of an ordinary source. This makes the projection device of the laser light source far greater than the light source of the light source, and has strong stability. For long-term use, the image quality will also maintain high brightness, color saturation and contrast, and the picture color will always be the same.
Sony launches the first laser light source projector
In addition, the laser is also excellent in brightness performance. By increasing the number of lasers, it is easy to achieve a single projector with a luminous flux of 10,000-50000 lumens or higher, and the lifetime of the light source is still high, and projection can be realized. The device does not need to be replaced with a light source during its useful life.
Laser source projector structure
Laser light source is excellent in color performance, brightness and life, but the cost of laser light source is indeed high. Laser projectors can only appear in the high-end market, and it is also the main market for laser projectors. the reason.
On the whole, the three light sources have their own advantages. Because of its mature development, easy replacement, and good brightness, the light source has a place in the current projection market, but the future development prospects are general. The light weight and durability of LED light sources make them widely used in the micro-projection and home projection markets. The laser source has shown great strength in performance and stability. Among the three light sources, the laser light source has greater development potential and better performance. In the future projection market, the laser light source is likely to become the main force of the projection light source.
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