Hioki LUX HiTESTER 3423, Instruction Manual

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Notes on Use
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R
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6.2 Relative Spectral Response
Characteristics in the Visible
Spectrum
Human perception of brightness ranges from
360 nm to 830 nm in the wavelength and is the
maximum at 555 nm.
The International Commission on Illumination
(CIE) has established comparative standards for
luminosity, setting the maximum perception for
1 and indicating the amount of perception of
each wavelength by the relative value, and
calculating the average of many people. In the
3423, the relative spectral response
characteristics are close to the comparative
standards for luminosity.
The deviation from the comparative standards
for luminosity is determined by the fs value of
JIS standard C 1609-1993.