reasons for common failures of tuya led panel lights What is the formula for calculating the value?

A: According to the spectral radiation flux Φ (λ), the luminous flux formula is obtained:

Phi =Km■ Phi (lambda) gV (lambda) dlambda

In the formula, V (λ) -- relative spectral optical efficiency; Km -- The maximum spectral optical efficiency of the radiation, expressed in Lm/W. In 1977, the Km value was determined by the International Metrology Commission as 683Lm/W (λm = 555nm).

For LED beads, is the bigger the led lumen, the better?

A: In principle, the so-called led lumen is the so-called luminous flux, and the number of lumens emitted by 1W is the luminous efficiency, so the higher the luminous flux produced by 1W, the better the luminous efficiency. But the luminous flux enhancement is achieved by lifting the current.

This may bring two negative effects: 1, the current is easy to cause light decay. 2. After the light flux is high, the color rendering will decline. And these two indicators are the most critical indicators to measure the quality of LED.

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