Kumar, Senthil A and Vasu, RM (1987) Generation of optimum random pinhole arrays for multiple imaging. In: Applied Optics, 26 (18). pp. 3858-3861.
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Through an analysis using the transfer function of a pinhole camera, the multiple imaging characteristics of photographic diffusers described by Grover and Tremblay [Appl. Opt.21,4500(1982)] is studied. It is found that only one pinhole diameter satisfies the optimum imaging condition for best contrast transfer at any desired spatial frequency. A simple method of generating random pinhole arrays with a controlled pinhole diameter is described. These pinhole arrays are later used to generate high frequency sinusoidal gratings from a coarse grid. The contrast in the final gratings is found to be reasonably high.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Optical Society of America.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)|
|Date Deposited:||22 Jul 2009 12:33|
|Last Modified:||19 Sep 2010 05:34|
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