The bending methods for elliptic and parabolic figure with variable-width mirror were discussed and the formula of variable-width for ladder-shaped mirrors was given.
对用宽度变化的镜子压制椭圆柱面和抛物柱面的方法进行了系统的讨论，给出了梯形镜的宽度变化公式。
2
A theory has been furnished to derive the reckoning formula of the mirror Moire topography.
提供了镜面所形成条纹的计算公式的推算原理。
3
The laser intensity distribution at the mirror surface is calculated using Collins formula, with which the period of damage rings and other phenomena can be explained.