As we all know, the traditional DLP projection equipment is the most criticized by its use of UHP light source, 6000 hours of average life expectancy led to the user's use of the cost can not be reduced, and LED light source is 10 times the service life of UHP, a good solution This question. But the current LED light source is perfect on it? In the use of what aspects should pay attention to it?
First, the choice of brightness and color gamut
Although the LED light source in the traditional outdoor LED display has reached the brightness of K-class lumens, but in the application of DLP is currently generally stay in the 600-800 lumens this interval (highlight mode), so the use of the environment Ambient light to do more stringent control, in order to customers for the LED light source brightness of the sensitivity to a minimum.
At the same time due to the wide color gamut LED light source characteristics, making us have the opportunity to apply in more complex environments. If the ambient light source is usually cold white or incandescent, it is recommended to adjust the color temperature in the 7500-9300K range, so that the human eye feel higher brightness, more vivid colors.
Second, the heat
LED light source due to spectral characteristics, resulting in the same brightness in the case, the light source part of the heat generated higher than the UHP (see Figure 2). So its thermal design requirements for the entire projection display unit and the ambient temperature control requirements are even higher. At present, the main cooling method is mainly air-cooled and water-cooled two. It should be said that each has its own advantages and disadvantages. Air-cooled type is more traditional, mature, water-cooled cooling efficiency slightly higher than the air-cooled, but the design is more difficult, long-term use of the reliability to be tested.
Traditional UHP light source due to shorter life, brightness attenuation faster, resulting in put into use, the need for a higher frequency of regular debugging, in order to brightness, color uniformity maintained at a certain level. The LED light source of high life, low attenuation characteristics of a good improvement of this situation, and because there is no color wheel, also do not have to consider the long-running dust for the light machine output color impact (see Figure 3). This will greatly save the maintenance of human labor expenditure.
Fourth, the use of cost
As the life of LED light source reached 60000h, and there is no color wheel, so theoretically in the normal use of equipment within the cycle do not have to consider the expenditure of supplies,
In summary, LED light projector in the use of results, maintenance costs compared to UHP step forward, as long as the brightness of light as soon as possible to achieve a breakthrough, you can foresee a certain period of time will dominate the entire high-end large screen splicing market.