LED - Tesla Lighting

Catalogue 2016/2017 - ENG

History of Tesla

  • 1921: Company established under the ELEKTRA name.
  • 1932: Company purchased by Philips / Wireless set manufacturing
  • 1945: Light bulb manufacturing / Vacuum tube manufacturing / Wireless set manufacturing
  • 1946: TESLA established as a nationalised company / Low-voltage and electronic circuits
  • 1953: First television transmitter commissioned / First relay link
  • 1958: Transistor radio manufacturing started
  • 1991: Privatisation / Joint Stock Company
  • 2008: Majority holding taken by Irish finance company
  • 2012: TESLA back in Czech ownership / Establishment of TESLA Lighting /
  • 2013: TESLA Lighting returns to the Czech lighting market with its unique patented LED crystal 360° technology / Foreign market launches – Austria, Germany, USA…

TESLA LED lighting offers fundamental electricity savings which can reach up to 80% compared to classic light. This means a significant reduction in CO2 emissions, while also being environmentally friendly since they contain no dangerous substances such as mercury, lead or cadmium.

TESLA Lighting is offering services of photometric laboratory, which has been opened in March 2015. Laboratory is equipped with integration sphere used for precise measurement of light spectrum and lumen output. Second basic device is Goniometer used for measuring light curves of luminaire or light source.

Measurement output are Test reports which based on measuring device includes all necessary parameters about tested light source such as: Chromaticity Coordinates, Dominant wavelength, Rendering Index, Flux, Efficiency, Voltage, Power Factor and photometric dates used for light software 3D simulation.

Changing our lights is currently one of the fastest and most convenient ways of reducing the energy demands of our buildings. Many years have passed since the light bulb was invented in 1879. The first alternative to it was the energy-saving alternating current tube invented by Nikola Tesla for the World Fair in Chicago in 1893.

The use of this technology was limited to tubes, to come back under Tesla in the form of compact fluorescent lamps (CFL). Compared with classic light bulbs, these promised savings in the initial phase of approximately 70% Apart from their less-than-ideal impact on human health, they suffer from strong degradation of light output as their electricity consumption increases. More recently, LED light sources have been introduced which give savings of up to an almost unbelievable 90% compared with classic light bulbs and 50% compared with energy-saving light bulbs.

A simple exchange of light bulbs can save you several thousand crowns a year, without any change in your comfort level.

LED lights have many advantages. Those most appreciated include:

  • Instant start-up of 100% of light output
  • Minimum light degradation
  • No human health impact (no UV or infra-red radiation)
  • Limited decline in light output
  • Up to 100 times longer lifetime compared to classic light bulbs
  • No lead content
  • Much colder, no risk of burns
  • Resistance to breakage

The LED (Light Emitting Diode) has been around for longer than it might be seen. The phenomenon of LED is known as electroluminescence was discovered by British research scientist H J Round in 1907 and led to further research in this field. The first LED was invented by Oleg Vladimirovich in 1927.

But of course its first practical application came in 1968 with HP calculator. After miniaturisation and mastery of many colour variations the first using of LED bulbs were announced roughly in 2009, when in laboratories LEDs achieve values exceeding 100 lm/W.

Technology generations can be distinguished by their basic characteristics, and offer various degrees of lumen value.

SMD

The SMD (Surface Mounted Device) diode is currently the most widespread variant used industrially. Thanks to miniaturisation and output improvements SMD is able to offer satisfactory light output. Its major disadvantage is its susceptibility to temperature, which can reduce its lifetime dramatically.

MCOB

COB/MCOB diodes are the response to the heat problem of SMD diodes with high outputs. The solution is a change in the technology for attaching the diode to the printed circuit board. While an SMD diode has its own casing which is stuck to the board, a COB/MCOB is stuck on directly using a special technique. This unique process reduces the heat demand of a diode by eliminating two layers and the contact resistance associated with them. The reduced temperature permits improved performance while retaining long lifetimes. MCOB is a derivative of COB.

CRYSTAL

Crystal is a unique technology where the LED is attached directly to a crystal base, allowing 360° illumination, while at the same time eliminating further layers and the contact resistance associated with them.

 

 

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