Kinoform

A kinoform is a type of computer-generated converging lens that is able to efficiently focus light to a point.^[1] They typically use holography to reproduce the optical phase profile of a normal converging lens, albeit on a flat surface.^[2]

They can be used in areas such as focusing x-ray radiation, or in the study of nanomaterials. Diamond is often used in kinoform lenses as it has a high thermal conductivity.^[3] Higher chromatic aberration is a common drawback.^[1]

See also

• Metasurface

Further reading

• A.F. Isakovic, A. Stein, J.B. Warren, S. Narayanan, M. Sprung, A.R. Sandy, K. Evans-Lutterodt, "Diamond Kinoform Hard X-ray Refractive Lenses: Design, Nanofabrication and Testing," J. Synch. Rad., 16, 8 (2009).