Projector has several light sources, and what is the difference between DLP and LCD what technology, what is the difference between features?
LED light source, LED light source brightness is small, is currently used mainly in micro projectors, brightness below 500 lumens.LCD projectors use LCD photoelectric effect, i.e. the arrangement of liquid crystal molecules under the electric field changes, affect the LCD unit light transmittance or reflectance, thereby affecting its optical properties, generate images with different gray levels and color.DLP (digital light processing projector) is a projection technique in the United States TI corporation which uses digital micro mirror device DMD chip as imaging device to realize projection image by regulating reflected light. It is very different from the liquid crystal projector, which is imaged through thousands of tiny lenses to reflect light.
Lamp light source, mainly UHP lamp (super light), UHE lamp and metal halogen lamp, UHP bulb is an ideal cold light source, but because of higher prices, generally used in high-end projector. The UHE lamp produces a cold light, compact shape, which produces a large amount of light at the same power consumption, and has a longer life. When it fails, it immediately goes out. The utility model has the advantages that the service life is long, and the utility model can be used normally for more than 4000 hours, and the brightness attenuation is very small.
