| 摘要 |
In the case of a device for identifying caries, plaque, bacterial infection, concretions, tartar and other fluorescent substances on teeth, having means (2) for generating stimulating radiation (A) which is to be directed onto a tooth-tissue region that is to be investigated, and detection means (7) and evaluation means for detecting and evaluating fluorescent radiation (F) that is generated by the irradiated tooth-tissue region in response to the irradiation, a beam splitter, which is arranged in the optical path between the means (2) for generating the stimulating radiation (A) and the tooth-tissue region to be investigated and which reflects the stimulating radiation (A) in the direction of the tooth-tissue region and substantially lets through the fluorescent radiation (F), is formed by the planar rear side (4) of a substantially hemispherical lens (3). In this way a clearly more compact optical diagnostic device is rendered possible.
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