DLP of the LED light source projection equipment applications

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DLP projector after nearly 20 years of development in recent years gradually by the severe impact of the LCD products, in response to changes in market conditions, a large-scale promotion and application of LED light source of DLP projectors in the last three years.

As we all k now, most of the traditional DLP projector criticized the use of UHP light source, the average life expectancy of 6000 hours resulted in the user s costs are still lower, while the LED light source are 10 times the service life of UHP good solution this problem. But the LED light source is perfect? In use and pay attention to what areas?

, Brightness, and the choice of the color gamut

LED light source in the traditional outdoor led light panel display, they have already attained the K level lumens of brightness of DLP applications generally stay within the range of 600-800 lumens (bright operating mode), so the use of the environment ambient light to do more strictly controlled customers to minimize the sensitivity of the brightness of the LED light source.

Due to the wide color gamut of the LED light source characteristics (see Figure 1), we have the opportunity to more complex environment. If the ambi ent light is usually cold white light or incandescent lamp, it is recommended that the color temperature adjustment range 7500-9300K, make eyes feel brighter, more vibrant colors.

LED light source spectral characteristics, resulting in the case of equal brightness, the light part of the heat generated is higher than the UHP (see figure II). Therefore, the thermal design requirements for the entire projection display unit and the control of the ambient temperature to request more. Mainstream heat is air-cooled and water-cooled two. It should be said that the advantages and disadvantages. More traditional air-cooled, mature, water-cooled cooling efficiency slightly higher than the air-cooled, but the design more difficult, long-term reliability to be tested.
Traditional UHP light source because of the shorter life span, the brightness decreases rapidly, leading to put into use, a higher frequency of periodic debugging, to brightness, color uniformity is maintai ned at a certain level. The high life of the led lamps for home light source, low-attenuation characteristics of a good improvement in this situation, because there is no color wheel, also do not consider the impact of long-running dust-ray machine output color