| 摘要 |
<P>PROBLEM TO BE SOLVED: To alleviate the decreasing rate of the total luminous flux by a globe glass to which a diffusion film is applied, while maintaining equal appearance to that of the conventional product. <P>SOLUTION: From the top part of the glove glass to cover a light emitting tube to the periphery of the maximum outer diameter formed by the globe glass is made a coated region by coating with the diffusion film, and from the peripheral part of the maximum outer diameter of the glove glass to the opening part of the glove glass is made a non-coated region with the diffusion film. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
