Coherence engineering

Author

Waller, Laura ; Lei Tian ; Ziji Liu

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., UC Berkeley, Berkeley, CA, USA

fYear

2014

fDate

7-11 July 2014

Firstpage

1

Lastpage

3

Abstract

We describe spatial coherence encoding in an LED array microscope, where a programmable array of LEDs is used in the source plane to pattern the spatial coherence of the illumination. Using this simple setup, we demonstrate various imaging functionality enabled by coherence manipulation: bright-field, darkfield, 3D phase imaging, and enhanced resolution. Our synthetic large NA imaging is an extension of the Fourier Pty-chography method to multiple coherent modes via illumination multiplexing. The result is significant decrease of both acquisition time and data capture requirements.

Keywords

Fourier transform optics; image coding; image enhancement; image resolution; light coherence; light emitting diodes; light sources; lighting; multiplexing; optical arrays; optical microscopy; 3D phase imaging; Fourier Pty-chography method; LED array microscope; illumination multiplexing; image resolution enhancement; light source; multiple coherent modes; spatial coherence encoding; synthetic large NA imaging; Arrays; Light emitting diodes; Lighting; Microscopy; Multiplexing; Optical microscopy; Coherence phase imaging; LED array; Ptychography; computational illumination; microscopy; resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Optics (WIO), 2014 13th Workshop on

Conference_Location

Neuchatel

Type

conf

DOI

10.1109/WIO.2014.6933284

Filename

6933284