The Surveyor Variable and Fixed Focal-Length Lenses

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The Surveyor spacecraft has TV cameras equipped with specially designed versatile variable focal-length lenses. Each lens is capable of withstanding extreme environments under the most adverse conditions of an earth launch, earth-moon journey, lunar soft landing and the vacuum and temperature variations of the moon. Each lens assembly is an optically integrated unit consisting of a 25mm to 100mm variable focal-length lens with earth-commanded motor drives for focal length, 4 ft to infinity focus and f/4 to f/22 adjustable iris mechanisms; a reflex viewing system behind the lens for automatic exposure control; solenoid-actuated focal-plane shutter; and motor-driven color filter wheel to provide color picture capability. Effects of radiation on optical transmission, optical performance in a vacuum, outgassing of particles on the lens surfaces, selection of lubricants and an all air-spaced optical design were among the design problems that were solved.
Publication Date: 1968-04-01
DOI: 10.5594/J05830
Link: https://doi.org/10.5594/J05830
Author(s): Carvyn Ellman

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Carvyn Ellman; The Surveyor Variable and Fixed Focal-Length Lenses, Journal of the SMPTE ( Volume: 77, Issue: 4, April 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J05830

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Carvyn Ellman; The Surveyor Variable and Fixed Focal-Length Lenses, Journal of the SMPTE ( Volume: 77, Issue: 4, April 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J05830

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Carvyn Ellman; The Surveyor Variable and Fixed Focal-Length Lenses, Journal of the SMPTE ( Volume: 77, Issue: 4, April 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J05830

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<span class="citation">Carvyn Ellman; <cite>The Surveyor Variable and Fixed Focal-Length Lenses</cite>, Journal of the SMPTE ( Volume: 77, Issue: 4, April 1968); SMPTE, 1968. Available at <a href="https://doi.org/10.5594/J05830" target="_blank" rel="noopener">https://doi.org/10.5594/J05830</a></span>

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Carvyn Ellman; The Surveyor Variable and Fixed Focal-Length Lenses, Journal of the SMPTE ( Volume: 77, Issue: 4, April 1968); SMPTE, 1968
doi: 10.5594/J05830
url: https://doi.org/10.5594/J05830

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<li>
Carvyn Ellman; <cite id="bib-10-5594-j05830">The Surveyor Variable and Fixed Focal-Length Lenses</cite>, Journal of the SMPTE ( Volume: 77, Issue: 4, April 1968); SMPTE, 1968
<span class="doi">10.5594/J05830</span>
</li>