AMacro-condenser test of reflection converged paraboloid
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摘要: 目前反射式抛物面的检测主要是利用光的干涉法测量抛物面的光程来实现，虽然精度比较高，但却只能检测抛物面的光滑程度，而对抛物面的聚光效果无能力。该文从基本原理出发，重申反射式抛物面的聚焦成像本质，进而指出确定其聚光精度的关键是反射面各点的面积元方向与入射光的夹角关系，而不是光程关系。同时给出了应用特大口径平行光源或特大口径平行光源组合直接对反射抛物面进行检测的方法，它可以定性地检测出抛物面宏观的聚光效果和成像质量。Abstract: Test of parabolic mirror is often completed by measuring the optical path length. Though it is highly accurate, it can only detect the smoothness instead of light convergence. Based on the basic principals, this paper describes the nature of convergence for parabolic mirror. It points out that convergence accuracy depends only on the angle between the direction vectors of surface elements and the incident ray instead of optical path length. Inthe end, methods for testing parabolic mirrors by collimated flood light sourceare provided.
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Keywords:
- parabolic /
- interference of light /
- light condensation /
- collimated light
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