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Ultra-high-performance lamp. An ultra-high-performance lamp, often known by the Philips trademark UHP, is a high-pressure mercury arc lamp. [1] These were originally known as ultra-high-pressure lamps, [2] [3] because the internal pressure can rise to as much as 200 atmospheres when the lamp reaches its operating temperature.
[49] [50] At the time of the announcement, the UHDTV technical details had not yet been decided. [49] [50] LG Electronics and Samsung are also involved in UHDTV test broadcasts. [50] In May 2012, NHK showed the world's first ultra-high-definition shoulder-mount camera. [51]