Abstract
The effects of spectral width and size of source on the quality of multiple images have been investigated theoretically and experimentally. It has been shown that, under the validity of Fourier optics, the physical size of the source has no influence on image resolution, but the spectral width of the source has. The relationship between the image resolution and the spectral width of the source shows that for high resolution multiple imaging, a high pressure Hg lamp can be used in conjuction with a suitable interference filter.
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