A large dynamic range detector for gingivitis detection

摘要

An optical emitter (102) configured to emit light in the tissue region of the user's mouthAt least four wavelength sensitive photodetectors configured to detect diffracted light signals through tissue regions112114116)Each of at least four wavelength sensitive photodetectorsFilter (BPF 1)BPF 2BPF 3BPF 4 andPhoto diodeD2,D3IncludesPhoto diodeThe photodiode is stacked over each other to generate a current difference signal for the corresponding amplifier;The current difference signal is generatedRemove undesired components from the optical signal before amplificationAt least four wavelength sensitive photodetectors andReceive the output from the corresponding amplifier andConstructed to detect tissue inflammation in tissue regionsIncluding an inflammation detection unit (136);Tissue inflammationDetect gingivitis especiallySystem.