Russia Develops Cathode Luminescent Lamp

- Feb 12, 2020-

Not long ago, LED lights replaced old incandescent lamps and made our lives brighter. However, it seems that it already has its new competitors. Researchers at the Moscow Institute of Physics and Technology (MIPT) and the Lebedev Institute of Physics of the Russian Academy of Sciences have proposed prototypes of cathodoluminescent lamps for general lighting-researchers have been studying them since the 1980s, but have only recently obtained them success.

The lighting of this new type of lamp designed by Russia is based on the field emission phenomenon, and its working principle is the same as that of old televisions using cathode ray tubes. According to researchers, this technology has many advantages. It can emit light of any color and can glow in almost any condition. Professor Yevgeny Sheshin, deputy director of the vacuum electronics department at the MIPT who led the research team, said: "We tried to put the lamp in liquid nitrogen at minus 180 degrees Celsius and it still works! Then we heated it to 300 Celsius-it has always been able to glow normally. "

Cathode glow lamp is called "Shersin lamp" in Russia, it will not gradually expire with the use of time, and there is no expiration date. If it can be mass-produced, its price will be very cheap (about 30 rubles or 3 yuan each), and the working time can reach 10,000 hours. Compared to this, LEDs with an expected lifetime of 50,000 hours seem to have lower brightness and may actually dim quickly. "Unlike LED bulbs, our lamps are not afraid of temperature rise and are suitable for use in places where light-emitting diodes will rapidly decay, such as in ceiling spotlights, where cooling cannot be performed effectively," said Dmitry, a collaborator from MIPT Vacuum Electronics Ozor said.

 "Sheshen lamps" are also cleaner alternatives to UV fluorescent tubes. As Mikhail Danilkin of the Lebedev Sports Institute of the Russian Academy of Sciences said, some industries that use mercury lamps for water treatment and air disinfection may be reluctant to phase them out, but are different in medicine Because in the context of increasingly stringent environmental standards, the issue of handling mercury lamps in a single medical institution has not yet been addressed. He said that the cathode-emitting lamps are mercury-free and can be used for disinfection of the operating room, ultraviolet irradiation of the throat and tonsils, and curing of dental fillings.

Russia is not the only country interested in cathode luminescence technology. The United States is also working to produce such lamps on a large scale, but similar to older televisions, they are bulky and take some time to heat the cathode to operating temperature, which is prohibitive for consumers. Professor Sheshen said that "Sheshen lamps" do not require any preheating and that the cost of its production technology models can be affordable. "This technology is our proprietary technology and no one else in the world owns it," he said.