Optical System Design of Corneal Crosslinker based on Digital Light Modulation.

In this paper, according to the treatment status of keratoconus and the principle of projection optical system, the corneal crosslinker optical system was designed to cover the single eye with uniform and variable shape. Firstly, this paper presents the scheme of the system and its working principle. Then, DMD uniform light path is designed based on the principle of compound eye lens, and the spot uniformity reaches 92%. Finally, according to the specific practical requirements in the use of corneal crosslinker, an ultraviolet projection lens with a working distance of 150mm and a magnification of β=-0.345 was designed, with a resolution of 45LP/mm in the full field of view far greater than 0.3.