enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   LED lamps are often made with arrays of surface mount LED modules. A significant difference from other light sources is that the light is more directional. An LED is a "Lambertian" emitter, producing a cone of light with half-power points about 60° from the axis. A laser diode is another form of LED emitter, but produces light by a different ...

3. LED filament - Wikipedia

   en.wikipedia.org/wiki/LED_filament

   A 230-volt LED filament light bulb, with a B22 base. The filaments are visible as the four yellow vertical lines. A LED filament light bulb is a LED lamp which is designed to resemble a traditional incandescent light bulb with visible filaments for aesthetic and light distribution purposes, but with the high efficiency of light-emitting diodes (LEDs).

4. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   The other is to use a phosphor material to convert monochromatic light from a blue or UV LED to broad-spectrum white light, similar to a fluorescent lamp. The yellow phosphor is cerium-doped YAG crystals suspended in the package or coated on the LED. This YAG phosphor causes white LEDs to appear yellow when off, and the space between the ...

5. Light-emitting diode physics - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode_physics

   One example of the photo-excitation scheme is a method developed by Michael Bowers, at Vanderbilt University in Nashville, involving coating a blue LED with quantum dots that glow white in response to the blue light from the LED. This method emits a warm, yellowish-white light similar to that made by incandescent light bulbs. [32]

6. What you need to know about the incandescent light bulb ban - AOL

   www.aol.com/know-incandescent-light-bulb-ban...

   By contrast, most LED bulbs will get you 75 lumens per watt, or more. What is not banned? Not all incandescent light bulbs are banned as part of the new rule, according to the Department of Energy ...

7. Solid-state lighting - Wikipedia

   en.wikipedia.org/wiki/Solid-state_lighting

   Compared to incandescent lighting, SSL creates visible light with reduced heat generation and less energy dissipation. Most common " white LEDs ” convert blue light from a solid-state device to an (approximate) white light spectrum using photoluminescence , the same principle used in conventional fluorescent tubes.