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The light calculation efficiency method is an approximate lighting design, with which the number of luminaires in the room can be determined very easily on the basis of just a few entries, specifying the type of luminaire and the lighting level. This BuR Lighting online light calculation tool is designed for exclusive use of BuR Lighting High Bay luminaires.



    • The light distribution of the luminaire indicates how the light is emitted.
    • The combination of light distribution and wattage results from the room geometry (e.g. wide beam luminaires with lower wattage for rooms with low mounting heights).
    • The light color of a light source is measured in degrees Kelvin; 2800-3000K stands for warm white, 4000-4500K for neutral white and 5500-6000K for daylight white.



      • The reflection coefficients of the room boundary surfaces (ceiling, walls, floor) tell us what percentage of the light hitting them is radiated again.
      • When calculating the illuminance, the degree of soiling anticipates the soiling of the room and the aging of the light sources over time.
      • The level of the average illuminance depends on the different working and visual tasks in the working plane.



        • The room height is measured from floor to ceiling.
        • The pendulum length is the depth of suspension of the luminaire from the ceiling.
        • The working plane is the height of the working surface from the floor.
        • The light point height is the height dimension between the working surface and the mounting height of the lights.



          • Switch to online light planning via the link
          • Data input under luminaire characteristics, room characteristics and room geometry
          • Reading the results under number of luminaires and illuminance
          • 6 possible result variants are offered
          • The number of luminaires should be symmetrical under the ceiling
          • Copy the link (URL) of the online lighting design and send it by e-mail with your contact details and questions to: 

          Click here for the Online Lighting Design.