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US 2012/0256100 A1Published application
Device for Reading Storage Films
AssigneeDuerr Dental AG
InventorsHerbert Haentsch, Bernd Phillips, Michael Weber
Life of this patent
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Abstract
In a reading device for reading storage films, a reading light beam rotating about an axis of rotation is directed onto the storage film through a reading opening of a film support. Fluorescent light returning from the storage film falls through the reading opening into a photodetector. Misreadings produced by reflected secondary reading light are reduced by the provision of a filter at the reading opening, which filter allows at least some fluorescent light to pass and attenuates reading light reflected from the storage film.
Claims13
A reading device for reading storage films comprising:
- a reading light beam movable along a given path over a storage film;
- and,
- a fluorescent light returning from the storage film which falls onto a photodetector,
- wherein along at least part of the given path there is provided a filter which allows at least part of the fluorescent light returning from the storage film to pass and attenuates reading light reflected by the storage film.
1 more element
Dependencies are inferred from the claim text.