| 摘要 |
The bulb for lamp wherein the bulb comprises copper sulphate(1-10 wt%), neodimium(0.1-1 wt%), borax(0.5-1.5 wt%), boric acid(1-5 wt%), sodium carbonate(7-13 wt%), potassium carbonate(0.3-1 wt%), quartz sand. A frost(3) is formed inside the bulb, and aluminium-deposited reflection part(2) is formed on the inside of the bulb near filament so as to emit light only through the radiation surface(1a).
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