不同尺寸的局域空心光束可囚禁不同尺度的微粒，在生命科学和纳米科技中具有重要的意义。提出了一种利用普通球面透镜望远系统来变换局域空心光束尺寸的新方法。利用几何光学方法进行了分析，采用ZEMAX光学设计软件实现光线追迹进行模拟。实验中拍摄并测量了经望远系统变换前后的局域空心光束的尺寸。结果表明，局域空心光束尺寸的变换比等于两个透镜的焦距比（望远系统的放大倍率），理论分析和数值模拟与实验结果吻合。

Bottle beams with different sizes can be used to trap particles at different scales. A new method of changing the size of bottle beam using a popular sphere lens telescope system is proposed. The analysis is based on the geometrical optics, and simulated by ray tracing with optical design software ZEMAX. The bottle beams were captured and measured before and after the telescope system. It is shown that the size conversion ratio of bottle beam corresponds to the ratio of focal length of the two lens (magnification of the telescope). The theoretic analysis and numerical stimulation agree well with the experimental results.