General technical Information
lamp design characteristics
mean spherical candelas
|The mean spherical light intensity or MSCd is the measurement for the luminous intensity of a subminiature lamp.
MSCd is the total amount of the luminous flux given by a lamp in the center of an integrated sphere. This ulbrichtsphere is connected to a photometer and will then be calibrated with an NBS (National Bureau of Standards) traceable candle power standard which matches closest to the lamp being measured in size and luminosity.
The light values given on our homepage can be converted to lumen by multiplication of the MSCd-data with 4 π (12.57).
Our standard tolerance is ± 25% for the mean spherical light intensity. Narrower selections (± 15% or ± 10%) as well as selections only for the positive or negative side of the nominal value are also available.
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