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Old Apr 25th 2013, 04:04 PM   #1
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Join Date: Apr 2013
Posts: 1
Illuminance required for a given luminance

Dear All,

I am a newbie to the forum and have a very specific question:

I am viewing a mat chart of 59cm x 84cm at 1m. I want the luminance of this mat chart to be 85 cd/m^2 (but 60-120 cd/m^2 is acceptable)


The questions:

1) What illuminance would produce this much luminance?
2) At what distance should we place the luminaire?
3) What wattage of lamp would produce the desired illuminance?

Any help would be appreciated

Sepoy
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illuminance, light, luminance, required



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