| 摘要 |
PURPOSE: To provide a CRT in which brightness is enhanced without changing a conventional electron gun, a luminescent body and the like. CONSTITUTION: This cathode-ray tube comprises both or either one of a panel glass 3 and a safety glass 1 which are used in the front surface of a color cathode-ray tube, and glass which has a characteristic that a spectral transmission factor with respect to an electromagnetic wave in the vicinity of wavelength of 580-700nm is relatively higher than a spectral transmission factor with respect to an electromagnetic wave in the vicinity of wavelength of 430nm and a spectral transmission factor with respect to an electromagnetic wave in the vicinity of wavelength of 530nm is used.
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