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提出了一种由负轴棱镜和球面透镜组成的光学系统 ,该系统可产生θ可变的无衍射光束 ;论述了它的特点及基本原理 ,给出了有关设计参数 ,并指出它潜在的应用价值
An optical system consisting of a negative-axis prism and a spherical lens is proposed. The system can produce a non-diffracting beam with θ variation. Its characteristics and basic principles are discussed. Relevant design parameters are given and its potential applications are pointed out value