In the spherical surface NC turning, the correct tool length compensation and tool nose radius compensation are significant to guarantee the precision of spherical surface.
在球面的数控车削加工过程中,刀具长度补偿和刀尖半径补偿的正确与否对于保证球面的轮廓精度极为重要。
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Conclusion the length of axis, corneal refractive power, lens thickness, anterior chamber depth and age have certain effect on the spherical equivalent refraction.
A new method for focal length measurement is presented based on the self-reference single plate shearing interferometric technique and compensation of spherical mirror.