A pinhole camera system is described utilizing a sealed optical-purge assembly which provides optical access into a coal combustor or other energy conversion reactors. The camera system basically consists of a focused-purge pinhole optical port assembly, a conventional TV vidicon receiver, an external, variable density light filter which is coupled electronically to the vidicon automatic gain control (agc). The key component of this system is the focused-purge pinhole optical port assembly which utilizes a purging inert gas to keep debris from entering the port and a lens arrangement which transfers the pinhole to the outside of the port assembly. One additional feature of the port assembly is that it is not flush with the interior of the combustor. (ERA citation 08:030165)


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    Title :

    Combustion Pinhole-Camera System


    Contributors:
    A. B. Witte (author)

    Publication date :

    1982


    Size :

    12 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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