| 摘要 |
PURPOSE:To integrate an aperture type lamp while to regulate the position and the dimension of the aperture opening section accurately and easily by sticking a light shield type applied with metal film onto the outer face of a portion of the open section of glass bulb. CONSTITUTION:A reflection film 11 is applied onto the inner face of a glass bulb 8 except the open section 10 having specific open angle theta while a fluorescent material film 12 is applied to the inside of the section applied with the reflection film 11. A light shielding tape 14 composed of adhesive tape such as plastic applied with aluminum metal coating 13 through deposition of aluminum onto the outer face is sticked to a portion of the open section 10. It is constructed such that the first open section 17 between the right end 15 of said tape 14 and the end 16 of the reflection film 11 and second open section 20 between the left end 18 of said tape 14 and the end 9 of the reflection film 11 will emit light for exposure and decharging. Consequently, the lamp is integrated to regulate the position of the open section accurately and easily. |
