Device for Reading Assay Results on Test Carrier

• US 20130242308A1
• Filed: 09/02/2011
• Published: 09/19/2013
• Est. Priority Date: 09/09/2010
• Status: Abandoned Application

• Current Assignee: Abon Biopharm Hangzhou Co Ltd (Abbott Laboratories Incorporated)
• Original Assignee: Abon Biopharm Hangzhou Co Ltd (Abbott Laboratories Incorporated)
• Inventors: Liu, Wei, Wu, Yinfei, Gao, Fei, Zhan, Ying'an
• Application Number:
  US13/822,147
• Publication Number:
  US 20130242308A1
• Time in Patent Office: Days
• US Class Current: 356/445
• CPC Class Codes: G01N 21/4738 Diffuse reflection precedence is given to G01N21/55 - G01N21/57 if specular component is taken into consideration, e.g. also for testing fluids, fibrous materials
• CPC Class Codes: G01N 21/553 and using surface plasmons fluorescence excitation G01N21/648; enhanced Raman G01N21/658
• CPC Class Codes: G01N 21/8483 Investigating reagent band test-element handling not specific to a test method G01N33/4875; analytical elements specific to chemical analysis of biological material G01N33/52; autometer with reagent band G01N35/04
• CPC Class Codes: G01N 2201/0642 Light traps; baffles

Abstract

A device for reading an assay test result on a test carrier comprises: a light-emitting element (5) for emitting and irradiating light onto corresponding one or more zones of the test carrier (3); a light-blocking element (12) for blocking the light mirror-reflected by the test carrier (3) from being irradiated on a photodetector (7); and a window (10), through which the light emitted from the light-emitting element (5) is irradiated onto the corresponding zones of the test carrier (3). In one preferred embodiment, the positions of the light-emitting element (5), the light-blocking element and the window (10) meet the function of S3≦>2*S7−S7*S2/S1, where S1 represents the vertical distance between the light-emitting element and the window; S2 represents the vertical height of the light-blocking element; S3 represents the vertical distance between the light-blocking element and the light-emitting element; and S7 represents the length of the window.

Claims

1. A device for reading an assay test result on a test carrier, comprising:

a light-emitting element, for emitting and irradiating light onto corresponding one or more zones of the test carrier; and

a light-blocking element, for blocking the light mirror-reflected by the test carrier from being irradiated on a photodetector.

2. The device according to claim 1, wherein the device further comprises a window through which the light emitted from the light-emitting element is irradiated onto the test carrier.

3. The device according to claim 2, wherein positions of the light-emitting element, the light-blocking element and the window meet a function of S3≧

2×

S7−

S7×

S2÷

S1, where S1 represents a vertical distance between the light-emitting element and the window;

S2 represents a vertical height of the light-blocking element;

S3 represents a vertical distance between the light-blocking element and the light-emitting element; and

S7 represents a length of the window.

4. The device according to claim 3, wherein the positions of the light-emitting element, the light-blocking element and the window meet a function of S3=2×

S7−

S7×

S2÷

S1.

8. The device according to claim 1 or 5, wherein the light-blocking element is positioned in an area where mirror reflection is occurred in the one or more zones of the test carrier.

9. The device according to claim 1 or 5, wherein a vertical height of the light-blocking element is smaller than a vertical distance of the light-emitting element from the test carrier or the window.

10. The device according to any one of claims 1-9, wherein the light-blocking element blocks the light mirror-reflected by a liquid surface on the test carrier from irradiating onto the photodetector.

11. The device according to any one of claims 1-9, wherein the carrier is a porous carrier.

5. A device for reading a test result on a test carrier, comprising:

a test carrier comprising one or more zones;

a light-emitting element, for emitting and irradiating light onto corresponding one or more zones of the test carrier;

a photodetector, for receiving the light from the one or more zones on the test carrier; and

a light-blocking element, for blocking the light mirror-reflected by the test carrier from being irradiated onto the photodetector.

6. The device according to claim 5, wherein positions of the light-emitting element, the light-blocking element and the window meet a function of S3≧

2×

S7−

S7×

S2÷

S1, where S1 represents a vertical distance between the light-emitting element and the one or more zones of the test carrier;

S2 represents a vertical height of the light-blocking element;

S3 represents a vertical distance between the light-blocking element and the light-emitting element; and

S7 represents a length of a light zone on the test carrier irradiated by the light from the light-emitting element.

7. The device according to claim 5, wherein the positions of the light-emitting element, the light-blocking element and the window meet a function of S3=2×

S7−

S7×

S2÷

S1.