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Raster objective and raster beam converter as well as optical scanning device with at least one of these elements
Raster objective and raster beam converter as well as optical scanning device with at least one of these elements
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机译:具有至少这些元件之一的光栅物镜和光栅束转换器以及光学扫描装置
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摘要
A grating objective is described which comprises at least three gratings and in which the axial ray and a border ray of a radiation beam are interchanged at least three times so that the objective has a wavelength-independent behaviour, a relatively large image field and a satisfactorily uniform intensity distribution. A beam shaper and a grating objective with a built-in beam shaper based on the same principle are also described.
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