Patent ID: 9618457
Date: 2017-04-11
CPC Classifications: G01N,G02B

Claim:
1. A chemical sensor, comprising: a substrate; a low refractive index layer that is laminated on the substrate and has a second refractive index smaller than a first refractive index, wherein the first refractive index is a refractive index of a detection target object; a high refractive index layer in which illumination light propagates, wherein the high refractive index layer is laminated on the low refractive index layer, wherein the high refractive index layer has a third refractive index larger than the first refractive index, and wherein the high refractive index layer comprises a holding surface on which the detection target object is held, wherein the holding surface has adsorption regions to which the detection target object is adsorbed and non-adsorption regions to which the detection target object is non-adsorbed, and wherein an area of the adsorption regions increases along a direction in which the illumination light propagates; and a light detection unit that is provided on the substrate and is configured to detect detection target light generated from the detection target object by the illumination light.