发明名称 |
DRIVE NOISE TOLERANT PLAQUE DETECTION |
摘要 |
<p>A dental implement (4) is presented that includes, in one embodiment, a light source (331) configured to emit an excitation light, and at least one optical unit for removing reflected excitation light and receiving a fluorescence light beam from the teeth. The dental implement further includes a detector (333) configured to receive the fluorescence light beam for detecting plaque and communicating a plaque identification signal of the teeth based on frequency domain lifetime measurements via a plaque detection circuit configured to reduce noise generated by a drive train at a drive train frequency (fdt). The plaque identification signal is demodulated to an intermediate frequency (fIF) such that the drive train frequency and the intermediate frequency are derived from a same master clock.</p> |
申请公布号 |
WO2014097198(A1) |
申请公布日期 |
2014.06.26 |
申请号 |
WO2013IB61122 |
申请日期 |
2013.12.19 |
申请人 |
KONINKLIJKE PHILIPS N.V. |
发明人 |
DEANE, STEVEN CHARLES;DAVIE, ALAN JAMES |
分类号 |
A61B5/00;G02F2/00;H04B10/67 |
主分类号 |
A61B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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