Patent ID: 11921081
Assignee: HAMAMATSU PHOTONICS K.K.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. A smell sensor comprising:
an ion sensor in which at least one sensing section provided with a sensitive film configured to change a potential in accordance with a state of a measurement target is formed on a substrate;
a substance adsorption film as the measurement target, disposed on the sensitive film and configured to change the state with adsorption of a smell substance; and
a reference electrode configured to apply a reference voltage to the substance adsorption film,
wherein the reference electrode is disposed to be separated from the sensitive film and not to overlap the sensing section when viewed in a thickness direction of the substrate,
wherein the ion sensor has a plurality of sensing sections arranged one-dimensionally or two-dimensionally on the substrate, and
wherein the reference electrode is disposed such that distances between the sensitive film of each of the plurality of sensing sections and the reference electrode are substantially the same.