Title :
Coherence engineering
Author :
Waller, Laura ; Lei Tian ; Ziji Liu
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., UC Berkeley, Berkeley, CA, USA
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;
Conference_Titel :
Information Optics (WIO), 2014 13th Workshop on
Conference_Location :
Neuchatel
DOI :
10.1109/WIO.2014.6933284
