| 摘要 |
A protective device is disclosed which is useful in protecting an operator against radiation emitted during welding. The protective device, which is employed in the presence of a surrounding light source, includes an interference filter which has a spectrally selective portion with bands for one or more of the ranges of wavelengths present in the emission spectrum of the surrounding light source and a radiation absorbing portion which attenuates the radiation to a value harmless to the eye without interfering with the spectrally selective portion of the interference filter.
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