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    • 2. 发明授权
    • Pen or pencil
    • 笔或铅笔
    • US06409407B1
    • 2002-06-25
    • US09889544
    • 2001-07-18
    • Manfred Schweizer
    • Manfred Schweizer
    • B43K512
    • B43K19/16B43K19/00
    • A pen or pencil having a shaft which in its peripheral surface has at least one first and at least one second surface region. Irradiation of the first surface region with light of a first light quantity per unit of surface area results in an emission of visible light in the second surface region, wherein the light quantity emitted in the second surface region per unit of surface area for at least one first frequency is greater than the light quantity per unit of surface area of the first frequency, which is absorbed in the first surface region.
    • 一种具有轴的钢笔或铅笔,所述轴在其外周表面具有至少一个第一和至少一个第二表面区域。 第一表面区域用单位表面积的第一光量照射导致第二表面区域中的可见光的发射,其中在每单位表面积的第二表面区域中发射的光量至少为一个 第一频率大于在第一表面区域中吸收的第一频率的每单位表面积的光量。