
Solid-state lighting (SSL) is a type of
lighting
Lighting or illumination is the deliberate use of light to achieve practical or aesthetic effects. Lighting includes the use of both artificial light sources like lamps and light fixtures, as well as natural illumination by capturing daylight. ...
that uses
semiconductor light-emitting diodes (LEDs),
organic light-emitting diodes (OLED), or
polymer light-emitting diodes (PLED) as sources of illumination rather than
electrical filaments,
plasma (used in
arc lamps such as
fluorescent lamps), or
gas.
Solid state electroluminescence is used in SSL, as opposed to incandescent bulbs (which use thermal radiation) or fluorescent tubes. Compared to incandescent lighting, SSL creates visible light with reduced heat generation and less energy dissipation. Most common "
white LEDsā convert blue light from a solid-state device to an (approximate) white light spectrum using
photoluminescence, the same principle used in conventional fluorescent tubes.
The typically small mass of a solid-state electronic lighting device provides for greater resistance to shock and vibration compared to brittle glass tubes/bulbs and long, thin filament wires. They also eliminate filament evaporation, potentially increasing the
life span of the
illumination device.
Solid-state lighting is often used in
traffic light
Traffic lights, traffic signals, or stoplights ā also known as robots in South Africa, Zambia, and Namibia ā are signaling devices positioned at intersection (road), road intersections, pedestrian crossings, and other locations in order t ...
s and is also used in modern vehicle lights, street and parking lot lights, train marker lights, building exteriors, remote controls etc. Controlling the light emission of LEDs may be done most effectively by using the principles of
nonimaging optics.
Solid-state lighting has made significant advances in industry. In the
entertainment lighting industry, standard incandescent tungsten-halogen lamps are being replaced by solid-state lighting fixtures.
[Kho, Mu-Jeong, Javed, T., Mark, R., Maier, E., and David, C. (2008) 'Final Report: OLED Solid State Lighting: Kodak European Research' MOTI (Management of Technology and Innovation) Project, Judge Business School of the University of Cambridge and Kodak European Research, Final Report presented on 4 March 2008 at Kodak European Research at Cambridge Science Park, Cambridge, UK, pages 1-12]
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See also
*
L Prize
*
LED lamp
*
List of light sources
*
Smart lighting
References
Further reading
*
* Kho, Mu-Jeong, Javed, T., Mark, R., Maier, E., and David, C. (2008) 'Final Report: OLED Solid State Lighting: Kodak European Research' MOTI (Management of Technology and Innovation) Project, Judge Business School of the University of Cambridge and Kodak European Research, Final Report presented on 4 March 2008 at Kodak European Research at Cambridge Science Park, Cambridge, UK, pages 1ā12.
External links
EUROPEAN METROLOGY RESEARCH PROJECT - METROLOGY FOR SOLID STATE LIGHTINGSolid State Lighting, International Energy Agency research projectLighting Research Center - Solid-State Lighting Program OLLA: finished European academic-industrial research project into OLED lightingOLED100.EU: successor to the OLLA project
{{Artificial light sources
Types of lamp
Semiconductor devices
Energy-saving lighting
Light-emitting diodes