【摘要】 采用连续问题离散化的方法 ,将线光源离散成由 n =l△ l 个点光源组成 ,反射面离散为m =S△ S 个小平面的组合 ,利用空间光线在抛物面上的反射规律 ,讨论了光强度与线光源的长度的关系 ,得出了符合要求的线光源的长度的最值及设计方案 ,该方法计算方便 ,便于实际操作且具有很大的推广性 .更多还原

【Abstract】 We use the reflection law of beam on the parabolic surface and apply the discrete method which separate linear light source into n spots one and separate the reflection surface into m small planes to discuss the relationship between luminosity with the length of light source. And we obtain the minimal length of the light source and schema which are fit for demands. This method is easy to calculate and convenient to practise and has much generalization.更多还原