Broadband anti–reflection structures on lenses applicable to visible–NIR microscope

Abstract

In the optical microscope, reduced reflection on surface of the objective lens is important to improve the microscope resolution. The anti-reflection structures can be used to reduce the reflection in wide wavelength. In this research, we fabricate the anti-reflection structures on the both sides of optical lens and show the improved transmission of this lens, over 95%, in visible-NIR regions without any image distortions and changed focal length.

© 2018 Optical Society of Japan