Therefore, instead of incoming light being focused to a perfect geometric point, the diffraction effect spreads the light into a disc with rings surrounding it.
因此,由于衍射存在,我们很难把入射光线集中在一点上,衍射使最终形成一个圆盘或者在外圈形成一个圆环。
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Therefore, this research reveals the composition of Airy disc, which is beneficial to deepen and enhance the recognition of the classical diffraction problem.