Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 2011 Oct 15;36(20):3987-9. doi: 10.1364/OL.36.003987.

Microscopy refocusing and dark-field imaging by using a simple LED array.

Author information

Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA.


The condenser is one of the main components in most transmitted light compound microscopes. In this Letter, we show that such a condenser can be replaced by a programmable LED array to achieve greater imaging flexibility and functionality. Without mechanically scanning the sample or changing the microscope setup, the proposed approach can be used for dark-field imaging, bright-field imaging, microscopy sectioning, and digital refocusing. Images of a starfish embryo were acquired by using such an approach for demonstration.

[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Loading ...
    Support Center