Wall-building system of DLP monitoring room using LED light source
Projectors using LED light sources have the following advantages:
1. Extraordinary life, almost no need to consider how long it takes;
2. Special power saving, almost no need to consider the electricity bill;
3. Ultra-portable, where you want to put it, especially when using batteries;
4. The price is acceptable
The disadvantages of LED light source at this stage:
At present, their brightness is very low, and they cannot cope with typical commercial and educational applications. Whether they can obtain practical brightness levels has become the key to LED light source technology. When the brightness increases, I believe that LED projectors will explode.
Find a new light source
Whether it is an LCD, LCOS, or DLP projector, light source technology is one of its core technologies. The currently widely used UHE and UHP bulbs have higher light efficiency and can output higher brightness, but their complicated optical path The high requirements of the structure and heat dissipation system have affected the further reduction of the size of the projector. At the same time, its 2000-3000 hours of life has greatly increased the later cost of the projector. Based on these factors, the projector's light source innovation will become the future technical development An important direction.
From the fundamentals of DLP and LCD technology, we can see the huge impact that light source technology may bring to it. Although it is a huge promotion for both, in certain market segments, technological progress is even It can turn the tide down.
LED light source
LED (LighyEmitTIngDiode), also known as light-emitting diode, it uses a solid semiconductor chip as a light-emitting material. When a forward voltage is applied to both ends, the carriers in the semiconductor recombine, releasing excess energy and causing photons to emit visible light. LED light source It has already been applied in the field of display and lighting.
High-brightness LEDs have been around for a long time, but because of the huge technical difficulties in manufacturing high-brightness blue LEDs, the lack of color of the red, green, and blue primary-color high-brightness LEDs has been unable to be used as a light source for projectors. In recent years, the technical difficulties in the production of high-brightness blue LEDs have been solved, and the high-brightness three-primary-color LEDs have been completely resolved, making it a backlight for LCD projectors.
The LED light source will bring more perfect color performance and greatly improve the color reproducibility. At the same time, the small size and low power consumption will enable the projector to realize real-time projection anytime and anywhere, while the small size, long life, fast shutdown and other projections The ultimate appeal of the machine can be solved by LED light source.
From the technical level, DMD technology must use color wheel spectrometry, which not only reduces the efficiency of the light source, but also affects the noise and rainbow effect, and the color of the single-panel panel. If the primary color LED light source can be realized, then DLP not only The quality of color has been improved, and it is very likely to achieve "no consumables"; on the LCD side, if the primary color LED light source is also used, its optical path will be greatly simplified, and dust and heat dissipation are no longer a big deal.
LED (LighyEmitTIngDiode), also known as light-emitting diode, it uses a solid semiconductor chip as a light-emitting material. When a forward voltage is applied to both ends, the carriers in the semiconductor recombine, releasing excess energy and causing photons to emit visible light. LED light source It has already been applied in the field of display and lighting.
High-brightness LEDs have been around for a long time, but because of the huge technical difficulties in manufacturing high-brightness blue LEDs, the lack of color of the red, green, and blue primary-color high-brightness LEDs has been unable to be used as a light source for projectors. In recent years, the technical difficulties in the production of high-brightness blue LEDs have been solved, and the high-brightness three-primary-color LEDs have been completely resolved, making it a backlight for LCD projectors.
The LED light source will bring more perfect color performance and greatly improve the color reproducibility. At the same time, the small size and low power consumption will enable the projector to realize real-time projection anytime and anywhere, while the small size, long life, fast shutdown and other projections The ultimate appeal of the machine can be solved by LED light source.
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