Aberration-corrected Toroidal Gratings for Flat-field Polychromators
- The toroidal diffraction gratings are made by aspheric blanks where each curvature of orthogonal two axes (meridional and sagittal) is different.
- The toroidal diffraction gratings are formed on toroidal (aspheric) blanks that can correct astigmatisms.
- The toroidal diffraction gratings, which are produced by holographic exposure method and ion-beam etching technology, have low stray light and high efficiency.
Example of Optical Mount (Polychromator)
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