发明公开
EP0974064A1 VORRICHTUNG UND VERFAHREN ZUR BILDERZEUGUNG BEI DER DIGITALEN DENTALEN RADIOGRAPHIE
失效
DEVICE AND METHOD FOR成像技术数字化口腔RADIOGRAPHY
- 专利标题: VORRICHTUNG UND VERFAHREN ZUR BILDERZEUGUNG BEI DER DIGITALEN DENTALEN RADIOGRAPHIE
- 专利标题(英): Device and method for producing images in digital dental radiography
- 专利标题(中): DEVICE AND METHOD FOR成像技术数字化口腔RADIOGRAPHY
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申请号: EP97950023.8申请日: 1997-10-23
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公开(公告)号: EP0974064A1公开(公告)日: 2000-01-26
- 发明人: SCHMITT, Peter , KOSTKA, Günther , SCHOLZ, Oliver , HANKE, Randolf , BAUER, Norbert
- 申请人: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DERANGEWANDTEN FORSCHUNG E.V.
- 申请人地址: Leonrodstrasse 54 80636 München DE
- 专利权人: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DERANGEWANDTEN FORSCHUNG E.V.
- 当前专利权人: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DERANGEWANDTEN FORSCHUNG E.V.
- 当前专利权人地址: Leonrodstrasse 54 80636 München DE
- 代理机构: Schoppe, Fritz, Dipl.-Ing.
- 国际公布: WO9922252 19990506
- 主分类号: G01T1/00
- IPC分类号: G01T1/00
摘要:
The inventive device for digital dental radiography has a source of X-radiation, a detector device, a correcting device and a temperature control device. Said detector device consists of a CCD array on which a scintillator layer is arranged and the radiation geometry of the detector device is constant in relation to the source of X-radiation. The correcting device corrects the electrical signals generated by the CCD array by compensating fluctuations in the electrical signals of the individual elements of the CCD array caused by a dark current of said array elements, by the array elements having different degrees of conversion efficiency and by the inhomogeneity of the scintillator layer. The temperature control device ensures that the detector device remains at a constant temperature during the detection of reference signals and image signals.
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