A spatially compact, lightweight positioning system for guiding an operator in positioning an ophthalmic instrument relative to an eye of a test subject has first and second light sources and an area detector spaced apart from a measurement axis of the instrument and from each other for providing positioning images which may be evaluated relative to stored calibration image information to determine current position of the instrument relative to the eye. The first and second light sources may fit within a lateral distance less than or equal to 25 mm. First and second illumination axes associated with the light sources may reside in a horizontal plane containing the measurement axis, and an observation axis of the area detector may reside in a vertical plane containing the measurement axis. The light sources and the area detector may be intersected by a plane which is normal to the measurement axis.


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    Title :

    POSITIONING SYSTEM FOR OPHTHALMIC INSTRUMENT


    Additional title:

    POSITIONIERUNGSSYSTEM FÜR EIN OPHTHALMISCHES INSTRUMENT
    SYSTÈME DE POSITIONNEMENT POUR INSTRUMENT OPHTALMIQUE


    Contributors:

    Publication date :

    2023-10-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    A61B DIAGNOSIS , Diagnostik / B61B RAILWAY SYSTEMS , Eisenbahnanlagen



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