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Fairchild Oscilloscope Record Camera Type 450A favori envoyer Print
Photos by Sylvain Halgand text by Sylvain Halgand. From the collection of Sylvain Halgand
France Version française

Chronology of the Fairchild brand  New window

Manufactured in Etats-Unis from (Postérieur à) 1964 until () 0.
Index of rarity in France : Rare (among non-specialized garage sales)
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Inventory number: 4730

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Fairchild Oscilloscope Record Camera

This device has for unique aim to record images from an oscilloscope screen . For this use, it consists of a Polaroid back , a rectangular chamber binding on the circular screen of an oscilloscope and a cone binocular sight .
Polaroid back is neither more nor less than the body of Automatic series . Some holes in the housing  used for button installation on the normal camera  are not drilled on this item , but just marked . This back is mounted on slides , and can therefore move sideways behind the chamber .
This chamber  is heavy, all-metal . It serves as a protection against the lights other than those emanating from the screen. Inside are the lens and shutter mounted on a tube attached to the back . With an outer knob, the overall lens , shutter , tube and back slides back to front  . The shutter speed is locked to the T exposure and aperture to f : 8. The trigger is located directly on the shutter. It comes in the form of a long vertical rod located under the lens / shutter block. Outside the chamber, to the right is a lever that , when pressed, is to raise a large part of the floor of the chamber and, as a consequence, presses the trigger rod. The left side of the chamber opens completely. The front part of the chamber is circular, with a diameter of 142 mm . It is set around an oscilloscope screen (round at  this time) . A lever allows you to tighten the chamber around the screen of the oscilloscope.
Above the chamber, a rubber coneallows to see what happens on the screen of the oscilloscope without ingress of the external light .
The lens is marked Wollensak-Dumont CRO Oscillo-Raptar  1:0.9X.
On the inside of the large side door is an Allen wrench . A diagram shows the optical design of the lens and gives theenlargement ratio according to the lens installed in the chamber. It is also stated that Dumont Laboratories is a division of Fairchild Camera & Instrument Corp.750 Bloomfield Avenue, Clifton , New Jersey.
DuMont Laboratories ,from 1931 was a pioneer in the development of cathode ray tubes for televisions . The company also manufactured televisions. In 1958, all the activity of television manufacturing was sold to another company . The rest of the business was sold to Fairchild Camera in 1960.

Fairchild Oscilloscope Record Camera





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