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+--- Thread: What are LEDs and how do they work? (/showthread.php?tid=374)
What are LEDs and how do they work? - fgfdh57gh - 08-27-2021
LED stands for light emitting diode. LED lighting products produce light up to 90% more efficiently than incandescent light bulbs. How do they work? An electrical current passes through a microchip, which illuminates the tiny light sources we call LEDs and the result is visible light. To prevent performance issues, the heat LEDs produce is absorbed into a heat sink.
Lifetime of LED Lighting Products
The useful life of LED lighting products is defined differently than that of other light sources, such as incandescent or compact fluorescent lighting (CFL). LEDs typically do not “burn out” or fail. Instead, they experience ‘lumen depreciation’, wherein the brightness of the LED dims slowly over time. Unlike incandescent bulbs, LED “lifetime” is established on a prediction of when the light output decreases by 30 percent.
LEDs are incorporated into bulbs and fixtures for general lighting applications. Small in size, LEDs provide unique design opportunities. Some LED bulb solutions may physically resemble familiar light bulbs and better match the appearance of traditional light bulbs. Some outdoor LED light fixtures may have LEDs built in as a permanent light source. There are also hybrid approaches where a non-traditional “bulb” or replaceable light source format is used and specially designed for a unique fixture. LEDs offer a tremendous opportunity for innovation in lighting form factors and fit a wider breadth of applications than traditional lighting technologies.
LEDs are “directional” light sources, which means they emit light in a specific direction, unlike incandescent and CFL, which emit light and heat in all directions. That means LEDs are able to use light and energy more efficiently in a multitude of applications. However, it also means that sophisticated engineering is needed to produce an LED bulb that shines light in every direction.
The potential effects of LED street light on health and the environment have been a hot topic of discussion over the last year. As this conversation has evolved, so too have many misperceptions and mischaracterizations of the facts on LEDs. We’ve assembled an array of helpful resources on the topic to help shed some light and are clarify some of the most common myths on LED streetlights.
LED streetlights are no more harmful to humans and animals
Homeowners and businesses have enough to deal with in these harsh economic times than needing to worry about changing floodlights. That’s why LED Flood Light offer the client not only an exceptional dispersion of light but also a bounty of advantages, which are only available when you use LED Floodlights.
In the world of lighting, LED high bay light is a fixture that you would find in a warehouse, a factory, a gymnasium, or any large open area with relatively high ceilings. Many existing high bay lighting and low bay lighting applications utilize high intensity discharge (HID) lamps such as metal halide or high pressure sodium lamps.
Despite their widespread use, HID lamps utilize antiquated technology that costs building managers both directly and i
This approach confined the market for solar LED light to areas closer to the equator with highest average levels of solar irradiation and temperatures that did not affect the performance and lifetime of the DC fluorescent bulbs. It also left the markets in the higher latitudes, typically with higher per capita wealth levels and greater lighting needs rather under-served.