实验表明，经该方法准直后的光束发散角（会聚角）可达0.00007 度。

Experiments have verified that the divergence angle of the light after collimation is up to 0.000070.

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结论在近端血流会聚角为水平型的主动脉瓣反流患者，血流会聚法能够准确地测量ero，是一种简便、实用的定量主动脉瓣反流程度的新方法。

Conclusions FC method for measuring ERO with feasibility in aortic regurgitation with a flat proximal flow convergence Angle, provides a reliable approach to quantify aortic regurgitation.

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针对将大发散角LED的光高效会聚到光纤接收端面的需求，提出了一种椭球面和聚光透镜组合光学系统设计的思路。

With large divergence Angle LED light efficiently converges at the optical fiber receiving end demand, an ellipsoid and focusing lens combination optical system design method is proposed.

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