Surface light emitting device

摘要: PROBLEM TO BE SOLVED: To provide a surface light emitting device whose chromaticity and luminous flux are not out of specifications while all large number LEDs supplied can be used when the having variations due to individual differences in range, flux, or like supplied.SOLUTION: A required included source unit sorted into allocated channels ch1, ch2, ch3 ch4 bar. high inside ch2 ch3, mixture low outside ch1 ch4.