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2. Diffuser (optics) - Wikipedia

   en.wikipedia.org/wiki/Diffuser_(optics)

   In optics, a diffuser (also called a light diffuser or optical diffuser) is any material that diffuses or scatters light in some manner to transmit soft light.Diffused light can be easily obtained by reflecting light from a white surface, while more compact diffusers may use translucent material, including ground glass, teflon, opal glass, and greyed glass.

3. Diffuser - Wikipedia

   en.wikipedia.org/wiki/Diffuser

   Diffuser (heat), a cooking item that is placed above a heating element to separate the cooking utensil from the heat source; Diffuser (optics), a device that spreads out or scatters light; Diffuser (sewage), an aerating device for sewage and industrial waste water treatments; Diffuser (thermodynamics), a device that controls the characteristics ...

4. Light tube - Wikipedia

   en.wikipedia.org/wiki/Light_tube

   At the end point (the point of use), a diffuser spreads the light into the room. The first full-scale passive horizontal light pipes were built at the Daylight Lab at Texas A&M University, where the annual daylight performance was thoroughly evaluated in a 360 degree rotating 6 m wide by 10 m deep room. The pipe is coated with a 99.3% specular ...

5. Troffer - Wikipedia

   en.wikipedia.org/wiki/Troffer

   A troffer is a rectangular light fixture that fits into a modular dropped ceiling grid (i.e. 2' by 2' or 2' by 4'). Troffer fixtures have typically been designed to accommodate standard fluorescent lamps (T12, T8, or T5), but are now often designed with integral LED sources. Troffers are typically recessed sitting above the ceiling grid, but ...

6. Softbox - Wikipedia

   en.wikipedia.org/wiki/Softbox

   In some commercially available models the diffuser is removable to allow the light to be used alone as a floodlight or with an umbrella reflector. A softbox can be used with either flash or continuous light sources such as fluorescent lamps or "hot lights" such as quartz halogen bulbs or tungsten bulbs. If softbox lights are used with "hot ...

7. Electroluminescence - Wikipedia

   en.wikipedia.org/wiki/Electroluminescence

   Light-emitting capacitor, or LEC, is a term used since at least 1961 [3] to describe electroluminescent panels. General Electric has patents dating to 1938 on flat electroluminescent panels that are still made as night lights and backlights for instrument panel displays.