Abstract
This paper deals with the development of a LED Light Intensity Distribution Tester. This group is mainly composed by Constant-current Device LED,Photodevice,Voltage Amplifier and Measuring Instrument.
When in the situation of having fixed the forward current and the environmental conditions (general environmental impact is very small), LED is driven with the current source of stable luminescence.And then the photoelectric detector puts the optical signal into a weak signal (that is the photo-voltage caused by photoelectric sensor),meanwhile to enlarge the weak signal by the voltage amplifier and to access to data from the measuring instrument,finally to analyze the LED light intensity distribution through the large number of effective data analysis.
Keywords:LED;Lllumination Intensity; Intensity Distribution; Voltage Amplification; Data Analysis