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US 12,449,356 B2Granted
Apparatuses, systems, and methods for sample testing
AssigneeHand Held Products, Inc.
InventorsChen Feng, Suresh Venkatarayalu, Robert Timothy Kester
Life of this patent
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Abstract
Methods, apparatuses, and systems associated with a sample testing device are provided. For example, an example sample testing device may include a substrate layer defining a bottom surface of the sample testing device, as well as a waveguide disposed on the substrate layer and includes at least one reference channel and at least one sample channel.
Claims19
A sample sensing device comprising:
- a waveguide component comprising:
- a waveguide layer defining a first waveguide portion and a second waveguide portion, wherein the waveguide layer further defines a step portion protruding out vertically from the first waveguide portion, wherein the step portion connects the first waveguide portion with the second waveguide portion, and wherein a thickness of the second waveguide portion is greater than a thickness of the first waveguide portion, wherein the first waveguide portion receives a light portion configured to transverse through the first waveguide portion and the second waveguide portion;
- and
- an interface layer having a sample opening, said sample opening configured to allow a sample to be disposed on a surface of the second waveguide portion, wherein an identity of the sample is configured to be detected based on an interference fringe pattern generated by propagation of light in the first waveguide portion and the second waveguide portion and the sample disposed on the surface of the second waveguide portion;
- wherein the first waveguide portion is configured to allow propagation of light in at least one or more transversal mode, wherein the second waveguide portion is configured to allow propagation of light in at least one or more transversal mode, wherein a count of traversal mode for propagation of light in the second waveguide portion is more compared to a count of traversal modes of propagation of light in the first waveguide portion.
2 more elements
Dependencies are inferred from the claim text.