Analysis of phase-contrast method with background light
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School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China
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Corresponding author:
HUANG Zuo-hua, zuohuah@scnu.edu.cn
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Received Date:
2010-11-30
Accepted Date:
2011-01-24
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Abstract
In order to observe weak phase objects, the phase contrast imaging of any phase objects with background light was strictly analyzed by mathematics. The general expressions of the image intensity, the best phase shift and the best transmittance of a phase plate were obtained. If the images are received by CCD, the phase variation of phase object that can be tested is about 1.9mrad. These will provide the mathematical demonstration for observing and testing weak phase objects.
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