In producing the umbrella with the light embedded into the head, Wu experimented extensively with different kinds of LED lights and batteries. He also reconfigured the power switch to a pushbutton instead of a knob and came up with a way to increase light output and conserve power by adjusting the shape of the lens. His improvements met with resounding commercial success.
這次研發內嵌 LED 燈於傘頭的裝置，他不但以各種電池和 LED 燈搭配實驗，還調整了以按壓代替旋轉方式來啟動開關，並設計出最佳聚光弧度的凸透鏡，讓傘燈明亮而省電，果然受到消費者的激賞。