Light Characteristics Measuring

1 2000 type Light Characteristics Measuring Methods 1.1 Method 2001：Average LED intensity 1.1.1Objective Measure the average LED intensity of the semiconductor light-emitting diode. 1.1.2 Test chart Picture 7 Method 2001 test chart D—LED device G—Current source PD–Photometric detector including the diaphragm D1 with the area A D2、D3–Eliminate the stray light diaphram D2,D3, detection solid angle [...]