Single-exposure quantitative phase imaging in color-coded LED microscopy

W Lee, D Jung, S Ryu, C Joo - Optics Express, 2017 - opg.optica.org
We demonstrate single-shot quantitative phase imaging (QPI) in a platform of color-coded
LED microscopy (cLEDscope). The light source in a conventional microscope is replaced by …

Efficient quantitative phase microscopy using programmable annular LED illumination

J Li, Q Chen, J Zhang, Y Zhang, L Lu… - Biomedical optics …, 2017 - opg.optica.org
In this work, we present an efficient quantitative phase imaging (QPI) approach using
programmable annular LED illumination. As a new type of coded light source, the LED array …

Quantitative phase and intensity microscopy using snapshot white light wavefront sensing

C Wang, Q Fu, X Dun, W Heidrich - Scientific Reports, 2019 - nature.com
Phase imaging techniques are an invaluable tool in microscopy for quickly examining thin
transparent specimens. Existing methods are limited to either simple and inexpensive …

Phase from chromatic aberrations

L Waller, SS Kou, CJR Sheppard, G Barbastathis - Optics express, 2010 - opg.optica.org
We show that phase objects may be computed accurately from a single color image in a
brightfield microscope, with no hardware modification. Our technique uses the chromatic …

Color-coded LED microscopy for multi-contrast and quantitative phase-gradient imaging

D Lee, S Ryu, U Kim, D Jung, C Joo - Biomedical optics express, 2015 - opg.optica.org
We present a multi-contrast microscope based on color-coded illumination and computation.
A programmable three-color light-emitting diode (LED) array illuminates a specimen, in …

Quantitative differential phase contrast (DPC) microscopy with computational aberration correction

M Chen, ZF Phillips, L Waller - Optics express, 2018 - opg.optica.org
Differential Phase Contrast (DPC) microscopy is a practical method for recovering
quantitative phase from intensity images captured with different source patterns in an LED …

Color-coded LED microscopy for quantitative phase imaging: Implementation and application to sperm motility analysis

W Lee, JH Choi, S Ryu, D Jung, J Song, JS Lee, C Joo - Methods, 2018 - Elsevier
Color-coded light-emitting diode (LED) microscopy (cLEDscope) is a novel computational
microscopy technique capable of multi-contrast and quantitative phase imaging of biological …

Quantitative phase microscopy via optimized inversion of the phase optical transfer function

MH Jenkins, TK Gaylord - Applied optics, 2015 - opg.optica.org
Although the field of quantitative phase imaging (QPI) has wide-ranging biomedical
applicability, many QPI methods are not well-suited for such applications due to their …

Optimal illumination pattern for transport-of-intensity quantitative phase microscopy

J Li, Q Chen, J Sun, J Zhang, X Pan, C Zuo - Optics express, 2018 - opg.optica.org
The transport-of-intensity equation (TIE) is a well-established non-interferometric phase
retrieval approach, which enables quantitative phase imaging (QPI) of transparent sample …

Effects of spatial coherence in diffraction phase microscopy

C Edwards, B Bhaduri, T Nguyen, BG Griffin… - Optics express, 2014 - opg.optica.org
Quantitative phase imaging systems using white light illumination can exhibit lower noise
figures than laser-based systems. However, they can also suffer from object-dependent …