Shorter X-ray refractive lens design: a large-aperture single-lens dual-focus kinoform lens based on an oval curved surface

Zhang, Y.; Xu, Y.; Zhang, T.; Wang, B.; Wu, L.; Yi, F.; Lin, H.; Liu, J.

doi:10.1107/S1600577526007551

Figure 2
Schematic diagrams of individual surface profiles of the OK3 lens. (a) Initial surface profile. The left-hand side (vacuum) has a refractive index of n₀ and the right-hand side (material) has a refractive index of n₁. This curved surface provides an X-ray refractive focal length q₂. (b) Exit surface profile of the kinoform lens. The left-hand side (material) has a refractive index of n₀ and the right-hand side (vacuum) has a refractive index of n₁. The incident focal length q₁ is transformed to q₂ after refraction through this surface, with a step height of λ/δ.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 33| Part 5| September 2026|

https://doi.org/10.1107/S1600577526007551

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