1, UHE: it belongs to ultra-high pressure mercury bulb and is suitable for long-term use. Its price is also moderate.
2.UHP: This is a patented technology invented by Philips. When the light bulb fails, it will go out immediately.
Second, the life span is different.
1, UHE: Not only the normal service time is twice as long as that of metal halogen bulbs, but also the performance curve of this kind of bulbs is smooth and the brightness is high, and there is no obvious decrease in brightness after long-term use.
2.UHP: The emitted light is an ideal cold light source, so it is widely used in front projection projectors and rear projection splicing walls of DLP and LCD (older rear projection screens). In addition, UHP bulbs are also used in home large-screen rear projection TV, which provides a light source guarantee for the development of projectors.
Third, the advantages are different.
1, UHE: Using the optical principle to filter out infrared rays and emit cold light, the heat is relatively small, which can effectively reduce the power consumption of the projector.
2.UHP:UHP bulbs can generate a lot of light and effectively suppress flicker, and they are smaller in shape, less in brightness attenuation and longer in life.
Baidu encyclopedia -UHE
Baidu encyclopedia -UHP bulb