Abstract

Freeform lens design for the prescribed irradiance without thin element and paraxial approximations is very complicated. We propose to transport a point source irradiance before the required freeform lens into an intermediate irradiance estimate next to the lens. In this way, the complicated freeform lens design problem could be transferred into a simpler problem of retrieving the phase from the intermediate and target irradiances. The phase retrieval solution can help construct an approximate lens, which is subsequently used to update the intermediate irradiance. Several iterations could bring a good performance, as demonstrated by two challenging designs.

© 2019 Optical Society of America

Iterative wavefront tailoring to simplify freeform optical design for prescribed irradiance

Zexin Feng, Dewen Cheng, and Yongtian Wang
Opt. Lett. 44(9) 2274-2277 (2019)

Iterative freeform lens design for optical field control

Zexin Feng, Dewen Cheng, and Yongtian Wang
Photon. Res. 9(9) 1775-1783 (2021)

Ray mapping method for off-axis and non-paraxial freeform illumination lens design

Karel Desnijder, Peter Hanselaer, and Youri Meuret
Opt. Lett. 44(4) 771-774 (2019)

Freeform lens design for a point source and far-field target

L. B. Romijn, J. H. M. ten Thije Boonkkamp, and W. L. IJzerman
J. Opt. Soc. Am. A 36(11) 1926-1939 (2019)

Freeform illumination optics for 3D targets through a virtual irradiance transport

Zhengbo Zhu, Shili Wei, Wenyi Li, Zichao Fan, and Donglin Ma
Opt. Express 29(10) 15382-15392 (2021)