带通滤光片
红外滤光片(玻璃)
红外塑料滤光片
长/短波通滤光片Stop saying, I wish, and to start saying, I will
The easiest thing in the world is to come up with an excuse not to do something. I found that the most important thing in life is to stop saying, I wish, and to start saying, I will.
世上最容易的是找借口，我发现人生最重要的是停止说：我希望，并开始说：我将会。
– 大卫‧考柏菲 (魔术师)
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