1. 蛍光灯型LEDランプの性能比較
 Fluorescent lamp type LED examination as lighting used to experiment

2. 電球型LEDランプの性能比較
 Lamp type LED examination as lighting used to experiment

3. LEDのスペクトル測定結果
 A spectrum of an LED is measured and it's made the reference when using for illumination for experiments.

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