From RBOSE

The idea is to develop a measurement device to better define the wavelenghts and intensitys on these light systems. More information under projecct LSIA

Contents 1 Information 1.1 Theory 1.2 Important units 2 Lightsystem database 2.1 Other systems 2.2 Bad working panels (not recommended buying)

Information

Theory

• LED names and wavelengths: [1]
• Good wavelengths of light (generally speaking): 430nm-460nm (blue), 630nm-660nm (red)
• Be aware that graphs of chlorophylls absorptions spectrum vary a bit [2]
• Recommendation: 14W leds / 1 feet [3]
• Comparison HID and LED: [4]

Important units

• Luminous flux [lumens = lm]
• Luminous intensity [candela = cd]
• View angle [degrees] (at which the intensity is half)
• 1 lm ≃ (1cd * degree^2)/4300

Lightsystem database

Other systems

• 55W leds (1:3.5, blue:red, 460nm:630nm)
• 90W leds (1:8, blue:red, 460nm:630nm, 1m^2)
• 90W leds (1:1:7, blue:orange:red, 460nm:610nm:630nm, 1m^2)
• 90W leds (1:8, blue:red, 460nm:660nm, 1m^2)
• 600W leds (6m^2)
• Old sourcing of leds

Bad working panels (not recommended buying)

• 15W led array from eBay: The leds are parallel connected and therefore some leds starts to get damaged and after some weeks, nothing is working anymore. DONT BUY THIS!