A Lens Measuring Method Using Photoconductive Cells

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Many characteristics of a lens can be evaluated using a method based on changes in the light distribution which take place in the image plane as the image of high-contrast target is moved through focus. A photoconductive surface in the image plane measures this information in the image, without having to resort to conventional photographic techniques or the human eye. Basically, the output of the instrument indicates the degree of sharpness of image. Thus, by locating the plane of best focus by instrument very exactly, the characteristics that can be measured are: the optical distances, and variations thereof at various wavelengths, in the visible and in part of the infrared region; and particular aberrations of a lens. Indirectly, the instrument indicates the resolving ability of the lens; thus qualitative comparisons between lenses can be made with this method.
Publication Date: 1965-06-01
DOI: 10.5594/J08290
Link: https://doi.org/10.5594/J08290
Author(s): Paul Pargas

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Paul Pargas; A Lens Measuring Method Using Photoconductive Cells, Journal of the SMPTE ( Volume: 74, Issue: 6, June 1965); SMPTE, 1965. Available at https://doi.org/10.5594/J08290

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Paul Pargas; A Lens Measuring Method Using Photoconductive Cells, Journal of the SMPTE ( Volume: 74, Issue: 6, June 1965); SMPTE, 1965. Available at https://doi.org/10.5594/J08290

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Paul Pargas; A Lens Measuring Method Using Photoconductive Cells, Journal of the SMPTE ( Volume: 74, Issue: 6, June 1965); SMPTE, 1965. Available at https://doi.org/10.5594/J08290

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<span class="citation">Paul Pargas; <cite>A Lens Measuring Method Using Photoconductive Cells</cite>, Journal of the SMPTE ( Volume: 74, Issue: 6, June 1965); SMPTE, 1965. Available at <a href="https://doi.org/10.5594/J08290" target="_blank" rel="noopener">https://doi.org/10.5594/J08290</a></span>

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Paul Pargas; A Lens Measuring Method Using Photoconductive Cells, Journal of the SMPTE ( Volume: 74, Issue: 6, June 1965); SMPTE, 1965
doi: 10.5594/J08290
url: https://doi.org/10.5594/J08290

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<li>
Paul Pargas; <cite id="bib-10-5594-j08290">A Lens Measuring Method Using Photoconductive Cells</cite>, Journal of the SMPTE ( Volume: 74, Issue: 6, June 1965); SMPTE, 1965
<span class="doi">10.5594/J08290</span>
</li>