High-density, visible LED's production test
fecha:2011-06-08 11:33
estado:para resolver
pregunta:admin
to use the cumulative test fixture ball.
Wavelength and color test
We usually use the spectrometer to measure the wavelength, which measures the output of the primary and LED peak wavelength. LED output spectrum is called the far field diagram (farfiELd pattern, FFP), similar to the LED peak wavelength of a center of normal curve. Full width at half maximum (Full width at halfmaximum, FWHM) calculated as the half-light intensity of the spectrum bandwidth is used to represent the working w
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