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Journal of the SMPTE ( Volume: 74, Issue: 6, June 1965)
[ACTIVE]

A Lens Measuring Method Using Photoconductive Cells

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
74, No. 6, pp. 501–504
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
ISSN
Print: 0361-4573
Link
https://doi.org/10.5594/J08290
Author(s)
Paul PargasLogEtronics Inc., 500 East Monroe Ave., Alexandria, Va.
Copyright
© 1965 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1. Craig Dwin R. , “Image sharpness meter,” Phot. Sci. Eng. , 5 : 337 – 342 , Nov./Dec. 1961 . EXTERNAL
  • 2. Pargas P. , “Phenomena of image sharpness recognition of CdS and CdSe photo-conductors,” J. Opt. Soc. Am. , 54 : 516 – 519 , Apr. 1964 . EXTERNAL
  • 3. Pargas P. Youso R. R. , “A practical approach to optical bench instrumentation,” SPSE News , 7 : 5 – 7 , May/June 1964 . EXTERNAL
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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
Snippet:
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
Snippet:
<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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Preview:
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
Snippet:
<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>

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