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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.
While the idea was first demonstrated by Benjamin Franklin, the idea was adapted for use in Christmas lights. They were invented by Carl Otis in 1935, who sold the patents to the NOMA Electric Corporation. There is a long story involving patent fights. [5] Bubble lights can still be purchased online and in stores to this day.
Formed as a limited company in 1902, the company initially sold gas lighting appliances and accessories such as burners and mantles. [1] [2] After World War I the company diversified into various electrical items. Christmas lights were an early addition to the product range, as were torches and battery lanterns.
The projection is a collaboration between Leeds BID and the Barcelona-based creative studio Onionlab, and is a reimagining of The 12 Days of Christmas song, in which the gingerbread man goes on a ...
Diagram of a high-pressure sodium lamp A high-pressure sodium lamp, Philips Master SDW-T 100W. Various types of chemistry are used in the arc tubes of HID lamps, depending on the desired characteristics of light intensity, correlated color temperature, color rendering index (CRI), energy efficiency, and lifespan. Varieties of HID lamp include:
Signify N.V., formerly known as Philips Lighting N.V., is a Dutch multinational lighting corporation formed in 2016 as a result of the spin-off of the lighting division of Philips, by means of an IPO. [2] The company manufactures electric lights, light fixtures and control systems for consumers, professionals and the IoT. In 2018, Philips ...