Thin-Probe Pulsed-Light Photometer for Measurement and Calibration of Timing and other Pulsed-Light Sources

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The apertures of timing blocks, by which range-timing signals are “written” on the film record, are inaccessible for normal photometry. Measurements of this type are made with a new thin-probe pulsed photometer sensitive to 0.01 fL and versatile to use. The photometer's circuitry is sensitive only to pulsating light signals; it will not respond to the continuous ambient light levels normally encountered in the field or laboratory. With expanded ranges and scales of light sensing and higher bandpass characteristics, the instrument predicts the film exposure at all film speeds and frame rates. Additional plug-in probes adapt the meter-amplifier for a variety of measurements in numerous fields where a small, sensitive pickup is required.
Publication Date: 1969-09-01
DOI: 10.5594/J10812
Link: https://doi.org/10.5594/J10812
Author(s): Leroy M. Dearing, Robert E. Hiller, C. Henderson Beal

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Leroy M. Dearing, Robert E. Hiller, and C. Henderson Beal; Thin-Probe Pulsed-Light Photometer for Measurement and Calibration of Timing and other Pulsed-Light Sources, Journal of the SMPTE ( Volume: 78, Issue: 9, September 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10812

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Leroy M. Dearing, Robert E. Hiller, and C. Henderson Beal; Thin-Probe Pulsed-Light Photometer for Measurement and Calibration of Timing and other Pulsed-Light Sources, Journal of the SMPTE ( Volume: 78, Issue: 9, September 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10812

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<span class="citation">Leroy M. Dearing, Robert E. Hiller, and C. Henderson Beal; <cite>Thin-Probe Pulsed-Light Photometer for Measurement and Calibration of Timing and other Pulsed-Light Sources</cite>, Journal of the SMPTE ( Volume: 78, Issue: 9, September 1969); SMPTE, 1969. Available at <a href="https://doi.org/10.5594/J10812" target="_blank" rel="noopener">https://doi.org/10.5594/J10812</a></span>

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<li>
Leroy M. Dearing, Robert E. Hiller, and C. Henderson Beal; <cite id="bib-10-5594-j10812">Thin-Probe Pulsed-Light Photometer for Measurement and Calibration of Timing and other Pulsed-Light Sources</cite>, Journal of the SMPTE ( Volume: 78, Issue: 9, September 1969); SMPTE, 1969
<span class="doi">10.5594/J10812</span>
</li>