Lens-free and portable quantitative phase microscope using a dual-pinhole aperture
Department of Automation and Mechanical Engineering, The Chinese University of Hong Kong, Shatin, N.T. 999077, Hong Kong, China
a e-mail: firstname.lastname@example.org
This paper presents a lens-free and portable quantitative phase microscope. This microscope employs a concise off-axis set-up where a dual-pinhole aperture is utilized to generate the reference wave and the object wave. As no lenses or beamsplitters are used in this microscope, the total size of this microscope is only slightly larger than a smart phone, and the cost of this microscope except for the digital camera is about 3000 RMB. Even with such small size and low cost, this microscope possesses a lateral resolution of ~ 1:7μm and an axial accuracy of tens of nanometers.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.