Richelsdorfite
Well-Known Member
Hello,
So, here is my reasoning to design my DIY led lamp
The maximum sun irradiance on eath is 1413 W/m² (see ASTM G173-03) at the top of the atmosphere.
From ASTM G173 data, I can compute the influence of each wavelength (280 to 4000nm 0.5nm precision) and the quanta provide by each of these wavelengths.
So, if I compute irradiance from 400 to 800 nm, it's give me 678 W/m² and 335 umol/m²/s.
If I substract the 500 to 600nm bandwidth, the irradiance is only 480 W/m² and 253 umol/m²/s.
So to reproduce the sun in my setup, I need 678 W/m² if I want all spectrum from 400 to 800 nm.
I added 25% more so 847,5 W/m².
If I don't want 500 to 600 nm bandwidth, I only need 480 W/m² +25% = 600 W/m²
Is this reasoning is a good approach ?
Yours,
Michael
So, here is my reasoning to design my DIY led lamp
- First assumption :
- Second assumption :
- Third assumption :
The maximum sun irradiance on eath is 1413 W/m² (see ASTM G173-03) at the top of the atmosphere.
From ASTM G173 data, I can compute the influence of each wavelength (280 to 4000nm 0.5nm precision) and the quanta provide by each of these wavelengths.
So, if I compute irradiance from 400 to 800 nm, it's give me 678 W/m² and 335 umol/m²/s.
If I substract the 500 to 600nm bandwidth, the irradiance is only 480 W/m² and 253 umol/m²/s.
So to reproduce the sun in my setup, I need 678 W/m² if I want all spectrum from 400 to 800 nm.
I added 25% more so 847,5 W/m².
If I don't want 500 to 600 nm bandwidth, I only need 480 W/m² +25% = 600 W/m²
Is this reasoning is a good approach ?
Yours,
Michael