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Light beam shaping device converts elliptical beam cross-section into circular beam cross-section by extending shorter elliptical axis and reducing longer elliptical axis
Light beam shaping device converts elliptical beam cross-section into circular beam cross-section by extending shorter elliptical axis and reducing longer elliptical axis
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机译：光束整形装置通过延伸较短的椭圆轴并减小较长的椭圆轴，将椭圆光束的横截面转换为圆形光束的横截面
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摘要
The device (1) has at least one optical element (2), e.g. a prism, providing at least 2 beam shaping surfaces (3,5), for extending the shorter elliptical axis of an elliptical beam cross-section and reducing its longer elliptical axis. An Independent claim for a device for playback or recording of an optical recording medium is also included.
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