Posted by Melissa N. Powell for Lighting Fixtures at Friday, November 17 2017 13:56:05
The more transparent the lighting fixture is, the higher efficacy. Shading the light will normally decrease efficiency but increase the directionality and the visual comfort probability.
The PH-lamps are a series of light fixtures designed by Danish designer and writer Poul Henningsen from 1926 onwards. The lamp is designed with multiple concentric shades to eliminate visual glare, only emitting reflected light, obscuring the light source.
Chandeliers are also known as suspension or chain-hung fixtures. Like ceiling fixtures, chandeliers are also hung from the ceiling. However, they require more space in addition to adding more pizzazz compared to regular ceiling fixtures. They provide general lighting and have at least two arms with down-lights or up-lights. They are most often used with formal dining rooms or dining tables.
An important property of light fixtures is the luminous efficacy or wall-plug efficiency, meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt. A fixture using replaceable light sources can also have its efficiency quoted as the percentage of light passed from the "bulb" to the surroundings.