Briefly: the application of LED light source projection equipment

DLP projection equipment after nearly 20 years of development, gradually in recent years, severely impacted by the LCD products, in order to deal with the change of market environment, using LED light source of the DLP projection equipment in the last three years has been large-scale popularization and application.

it is well known that traditional DLP projection equipment most criticism is the use of UHP light source, the average life expectancy for 6000 hours lead to the use of the user still cannot reduce cost, while LED light source with 10 times the UHP service life, good solve the problem. But the LED light source is perfect? In use and should pay attention to what aspects?

a, brightness, and the choice of the color gamut

although LED light source in traditional outdoor LED display has already been reached grade K lumens, but it is common in application in the DLP stay - in 600 800 lumens this range ( Highlight work mode) , so for the use environment of ambient light to do more strict control, so that the customer to minimize the sensitivity of the brightness of LED light source is insufficient.

at the same time due to the wide color gamut characteristics of LED light source ( See figure 1) That we have the chance to applications in a more complex environment. If the environment light source is usually cold white light or incandescent lamp, then suggested that can adjust the color temperature in 7500 - The range of 9300 k, make the human feel the brightness of the higher, the color is more bright-coloured. Figure 1

2, cooling

the LED light source due to the spectral characteristics, cause under the condition of the same brightness, the heat generated by the light source parts than UHP ( See figure 2) 。 So its projection display unit for the entire heat dissipation design requirements and control requirement of the environmental temperature is higher. At present the mainstream way of heat mainly air-cooled and water-cooled type two kinds. It should be said that each have advantages and disadvantages. More traditional and mature air cooled and water cooled cooling efficiency is slightly higher than that of air-cooled, design difficulty is higher, but the long-term use of the reliability test.

figure 2 three, maintenance,

traditional UHP lamp because life is short, the brightness decay quickly, cause after put into use, need higher frequency of debugging, on a regular basis to maintain brightness, color uniformity at a certain level. And high service life and low attenuation characteristic of LED light source is very good to improve this situation, since there is no color wheel at the same time, also won't have to consider the dust in the long run the effects on the output color Yu Guangji ( See figure 3) 。 Thus greatly save the maintenance required human expenditure. Figure 3

4, use cost

60000 h due to the life of the LED light source, and there is no color wheel, so in theory within the normal life cycle of equipment don't have to consider the spending of consumables,

the place on put together is narrated, the LED light source, the projector in use effect, the maintenance cost than UHP a major step forward, as long as the breakthrough, as soon as possible in terms of lighting source can anticipate that in a certain period of time will dominate the high-end large-screen Mosaic market.