US 12,123,831 B2
Measurement chip, measuring device and measuring method
Keiji Tada, Nishinomiya (JP)
Assigned to FURUNO ELECTRIC CO., LTD., Nishinomiya (JP)
Filed by Furuno Electric Co., Ltd., Hyogo (JP)
Filed on Nov. 22, 2022, as Appl. No. 17/991,851.
Application 17/991,851 is a division of application No. 16/801,159, filed on Feb. 26, 2020, granted, now 11,543,347.
Application 16/801,159 is a continuation in part of application No. PCT/JP2018/029512, filed on Aug. 7, 2018.
Claims priority of application No. 2017-167388 (JP), filed on Aug. 31, 2017.
Prior Publication US 2023/0097717 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 21/41 (2006.01); G01N 21/27 (2006.01); G01N 21/77 (2006.01)
CPC G01N 21/41 (2013.01) [G01N 21/272 (2013.01); G01N 21/77 (2013.01); G01N 21/7703 (2013.01); G01N 2021/418 (2013.01); G01N 2021/7776 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A measuring chip, comprising:
a propagation layer having top and bottom surfaces that reflect light within the propagation layer so that the light propagates in a light propagation direction and within the propagation layer, the propagation layer including:
an introductory part embedded in a first end of the bottom surface of the propagation layer and configured to introduce the light into the propagation layer so as to propagate the light in the light propagation direction; and
a drawn-out part embedded in a second end of the bottom surface of the propagation layer opposite from the first end, and configured to draw the light propagated in the light propagation direction from the propagation layer; and
a reaction part having a bottom surface directly on the top surface of the propagation layer, the propagation layer having an area larger than an area of the reaction part, the reaction part comprising a reactant that is reactive with a substance to be placed on an upper surface of the reaction part for detection,
wherein the area of the reaction part has a length in a direction perpendicular to the light propagation direction that increases from the first end to the second end of the propagation layer.