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    • 1. 发明授权
    • Electric lamp
    • 电灯
    • US06639342B2
    • 2003-10-28
    • US09880208
    • 2001-06-13
    • Erik Paul BoonekampJohannes Adrianus Frederikus PeekWolfgang Doetter
    • Erik Paul BoonekampJohannes Adrianus Frederikus PeekWolfgang Doetter
    • H01J6140
    • H01K1/32C03C17/42C03C2217/485C03C2217/734G02B5/223G02B5/285H01J61/40
    • The electric lamp employs a lamp vessel (1), which is transparent to visible light and which accommodates a light source (2). The lamp vessel (1) is covered with a combination of a light-absorbing medium (6) and an optical interference film (5) employing layers of alternately a first layer of a material with a comparatively high refractive index and a second layer of silicon dioxide. A spectral transmission T of light transmitted by the light-absorbing medium (6) changes from T≦0.15 to T≧0.75 in a wavelength range having a width &lgr;≦50 nm. The variation in reflection R amounts to less than 10% in the wavelength range 400≦R≦690 nm, the reflection R and lies in the range 50≦R≦90%. In operation, the electric lamp emits colored light in the transmission mode and has a substantially color-neutral appearance in the off state.
    • 电灯采用对可见光透明并容纳光源(2)的灯容器(1)。 灯容器(1)被光吸收介质(6)和光学干涉膜(5)的组合覆盖,所述光吸收介质(6)和光学干涉膜(5)交替使用具有较高折射率的第一材料层和第二层硅 二氧化碳 由光吸收介质(6)透射的光的光谱透射率T在宽度λ<= 50nm的波长范围内从T <= 0.15变化到T> = 0.75。 反射R的变化在400 <= R <= 690nm的波长范围内小于10%,反射R位于50 <= R <= 90%的范围内。 在操作中,电灯以透射模式发出彩色光,并且在关闭状态下具有基本上色彩的外观。