Universal optical imaging and processing system

• US 7,803,322 B2
• Filed: 05/12/2005
• Issued: 09/28/2010
• Est. Priority Date: 08/14/2002
• Status: Active Grant

• Current Assignee: Detekt Biomedical, LLC
• Original Assignee: Detekt Biomedical, LLC
• Inventors: McAleer, Michael, Borich, Damon Vincent, Savoy, Steve, Milder, Andrew, Mitchell, Daniel
• Primary Examiner(s): Jarrett; Lore
• Application Number:
  US11/127,717
• Publication Number:
  US 20050201898A1
• Time in Patent Office: 1,965 Days
• Field of Search: 422/68.1, 422/82.05, 422/62
• US Class Current: 422/68.1
• CPC Class Codes: G01N 21/78 producing a change of colour
• CPC Class Codes: G01N 21/81 Indicating humidity
• CPC Class Codes: G01N 2201/0221 Portable; cableless; compact; hand-held
• CPC Class Codes: G01N 2201/024 Modular construction

Abstract

The disclosure is directed to a test media reader module including a housing, a membrane, and an optical imager. The housing is configured to receive a test media adapter and has a barrier wall configured to separate the test media adapter from an interior of the housing. The barrier wall includes a window having an interior side and an exterior side. The membrane is transparent to a wavelength useful for imaging test media in the test media adapter. The membrane has a reactive region and overlies at least a portion of the exterior side of the window. The optical imager is located interior to the housing and is configured to image the test media located on the exterior side of the window along an optical path extending through the window and the membrane.

Claims

1. A test media reader module comprising:

a test media adapter configured to receive a test media that provides optical indication of a presence of a first analyte;

a housing configured to couple to the test media adapter, the housing having a barrier configured to separate the test media adapter from an interior of the housing, the barrier including a window having an interior side and an exterior side;

a membrane transparent to a wavelength useful for imaging a particular test media in the test media adapter, the membrane having at least one reactive region responsive to a proximate condition to change at least one optical characteristic of the at least one reactive region, the membrane overlying at least a portion of the exterior side of the window; and

an optical imager located proximal to the interior side of the window, wherein the optical imager is operative to capture an image including the particular test media in the test media adapter and the at least one reactive region of the membrane along an optical path extending through the window and the membrane.

2. The test media reader module of claim 1, wherein the housing is configured to receive a handheld electronic device.

3. The test media reader module of claim 1, wherein the membrane is one membrane of a stack of membranes overlying the exterior side of the window.

4. The test media reader module of claim 1, wherein the at least one reactive region of the membrane is transparent to the wavelength prior to exposure to the proximate condition.

5. The test media reader module of claim 1, wherein the at least one optical characteristic of the at least one reactive region includes at least one of a change in color and a change in transmissivity.

6. The test media reader module of claim 1, wherein the proximate condition to change optical characteristics of the at least one reactive region is selected from the a group consisting of humidity, temperature, a concentration of air borne analytes, a concentration of volatile chemicals, and any combination thereof.

7. The test media reader module of claim 1, further comprising an antenna coupled to the housing.

8. The test media reader module of claim 7, wherein the antenna is configured to access a radio frequency identification tag coupled to the particular test media.

9. The test media reader module of claim 7, wherein the antenna is configured to transmit and receive data to and from the particular test media.

10. The test media reader module of claim 1, wherein the at least one reactive region comprises a plurality of reactive regions, wherein two or more of the reactive regions are responsive to different proximate conditions.

11. The test media reader module of claim 1, wherein the membrane includes an identifier, and wherein the captured image includes the identifier of the membrane.

12. The test media reader module of claim 1, wherein the proximate condition to change optical characteristics of the at least one reactive region includes a contact of the at least one reactive region by a second analyte different from the first analyte.

13. The test media reader module of claim 1, further comprising a processing device to analyze the captured image using different test criteria for a first portion of the captured image including the particular test media and for a second portion of the captured image of including the at least one reactive region.

14. A system, comprising:

a housing including a window;

an optical imager located in the housing on a first side of the window;

a membrane positionable on a second side of the window to overlie at least a portion of the window, wherein the membrane includes a transparent region and at least one reactive region responsive to a proximate condition to change optical characteristics of the at least one reactive region;

a test media adapter configured to couple to the housing; and

a test media positionable in the test media adapter such that the membrane is positioned between the window and the test media when the membrane is positioned on the second side of the window and the test media adapter is coupled to the housing, wherein the test media provides an optical indication of a presence of a first analyte;

wherein the optical imager is configured to capture an image of the test media and the at least one reactive region of the membrane.

15. The system of claim 14, wherein the test media comprises a display window, and wherein an indication of the presence of the first analyte is shown in the display window.

16. The system of claim 14, wherein the test media comprises a port to accept liquid samples.

17. The system of claim 14, wherein the test media comprises a radio frequency identification component.