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    lux w/m2

    Hi,

    is there any formulas or equations to convert measured illuminance in Luxs to irradiance in W/m2

    or

    convert measured luminance in Cd/m2 to irradiance in W/m2

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    Re: converting lux to W/m2

    1 lx = 1 lm/m^2, what 1 lumen is depends upon the kind of light, e.g. for white light 1 lm = 5mW, for green light 1 lm = 1/683 W.



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    Re: converting lux to W/m2

    Keith, this converter gives results corresponding to maximum sensitivity of the eye (green light) WITHOUT MENTIONING IT.



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    converting lux to W/m2

    There are other online converters - I cannot remember which ones I have used in the past. I usually end up looking up the values based on wavelength of interest.

    Keith.

    Added after 1 minutes:

    This link may be useful:

    http://www.optics.arizona.edu/Palmer/rpfaq/rpfaq.htm

    Keith.
    I started life with nothing and I've still got most of it left. (Seasick Steve)



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