Collimation method using a double grating system
نویسندگان
چکیده
منابع مشابه
Collimation method using a double grating system.
We present a collimation technique based on a double grating system to locate with high accuracy an emitter in the focal plane of a lens. Talbot self-images are projected onto the second grating producing moiré interferences. By means of two photodetectors positioned just behind the second grating, it is possible to determine the optimal position of the light source for collimation by measuring...
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A new double-grating-based phase-contrast imaging technique is described. This technique differs from the conventional double-grating imaging method by the image acquisition strategy. The novelty of the proposed method is in lateral scanning of both gratings simultaneously while an image is collected. The collected image is not contaminated by a Moiré pattern and can be recorded even by using a...
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ژورنال
عنوان ژورنال: Applied Optics
سال: 2010
ISSN: 0003-6935,1539-4522
DOI: 10.1364/ao.49.003363