Combination reader

• US 7,491,924 B2
• Filed: 07/23/2007
• Issued: 02/17/2009
• Est. Priority Date: 03/10/2003
• Status: Active Grant

• Current Assignee: Applied Biosystems LLC (Thermo Fisher Scientific Incorporated)
• Original Assignee: Applera Corporation (Thermo Fisher Scientific Incorporated)
• Inventors: Ferea, Tracy L., Oldham, Mark F., Haga, Douwe D., King, Howard G.
• Primary Examiner(s): Lee; John R
• Application Number:
  US11/781,515
• Publication Number:
  US 20070263209A1
• Time in Patent Office: 575 Days
• Field of Search: 250234-236, 25033911-33912, 250/361.R, 250/370.08, 250/458.1, 250/461.1, 250/461.2, 250/208.1, 250/559.4, 250583-586, 356317-318, 356/417, 435/5, 435/6, 435/34, 435/40.5
• US Class Current: 250/208.1
• CPC Class Codes: G01J 3/10 Arrangements of light sources specially adapted for spectrometry or colorimetry
• CPC Class Codes: G01J 3/4406 Fluorescence spectrometry
• CPC Class Codes: G01N 21/6428 Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" in vivo A61B5/00; immunoassay G01N33/53
• CPC Class Codes: G01N 21/645 Specially adapted constructive features of fluorimeters
• CPC Class Codes: G01N 21/6452 Individual samples arranged in a regular 2D-array, e.g. multiwell plates
• CPC Class Codes: G01N 21/6456 Spatial resolved fluorescence measurements; Imaging
• CPC Class Codes: G01N 21/76 Chemiluminescence; Bioluminescence
• CPC Class Codes: G01N 2201/062 LED's
• CPC Class Codes: G01N 2201/0627 Use of several LED's for spectral resolution
• CPC Class Codes: G01N 2201/0633 Directed, collimated illumination
• CPC Class Codes: G01N 2201/0634 Diffuse illumination

Abstract

An apparatus for imaging an array of a plurality of features associated with a sample tile. The apparatus includes a stage that supports the sample tile in an illumination region, and an illumination source having a plurality of LEDs adapted to emit light. At least a portion of the light illuminates the illumination region. Additionally, the apparatus includes an image collecting device adapted to selectively collect images of a signal.

Claims

1. A method for collecting images of signals using an imaging apparatus, the method comprising:

placing a sample tile on a stage of the imaging apparatus, the sample tile having an array including a plurality of features, at least a portion of the features each having a hybridized sample;

introducing a first excitation energy upon an area of the sample tile, flooding an entirety of the area of the sample tile with the first excitation energy, and causing a first signal to be emitted;

collecting a first image of at least a portion of the array utilizing an image collecting device of the imaging apparatus, the first image being representative of the first signal; and

collecting a second image of at least a portion of the array utilizing the image collecting device of the imaging apparatus, the second image being representative of a second signal, the second signal being different than the first signal.

2. The method according to claim 1 wherein the introducing a first excitation energy upon the area of the sample tile comprises introducing the first excitation energy from a laser source upon the area of the sample tile.

3. The method according to claim 1, further comprising:

moving the stage from a first position to a second position, the second position being generally under the image collecting device.

4. The method according to claim 1, further comprising:

moving the stage from a first position to a second position along an x-axis, the second position being generally under the image collecting device.

5. The method according to claim 1, further comprising:

moving the stage from a first position to a second position, the second position being generally at a focal plane of the image collecting device.

6. The method according to claim 1, wherein the introducing the first excitation energy upon the area of the sample tile causing the first signal to be emitted comprises introducing the first excitation energy upon the area of the sample tile causing a fluorescent signal to be emitted.

7. The method according to claim 1 wherein the second signal comprises a chemiluminescent signal.

8. The method according to claim 1, further comprising:

positioning a filter between the stage and the image collecting device of the imaging apparatus, the filter filtering at least a portion of one of the first signal and the second signal.

9. An imaging system for collecting images of signals associated with a sample tile, the imaging system comprising:

a stage supporting the sample tile;

an illuminator system emitting excitation energy upon the sample tile causing at least a first signal to be generated from the sample tile, wherein the illuminator system comprises a diffuser diffusing the excitation energy such that the sample tile is flooded with the excitation energy from a plurality of directions; and

an image collecting device collecting a first image of the first signal, the image collecting device further collecting a second image of a second signal emitted from the sample tile, the second signal being different than the first signal.

10. The imaging system according to claim 9 wherein the stage is movable from a first position to a second position, the second position being generally under the image collecting device.

11. The imaging system according to claim 9 wherein the illuminator system comprises a plurality of sources outputting the excitation energy such that the sample tile is flooded with the excitation energy from a plurality of directions.

12. The imaging system according to claim 9 wherein the illuminator system floods an entirety of the sample tile with the excitation energy.

13. The imaging system according to claim 9 wherein the illuminator system comprises a laser.

14. The imaging system according to claim 9 wherein the illuminator system is positioned between the image collecting device and the stage.

15. The imaging system according to claim 9 wherein the illuminator system comprises a filter filtering the excitation energy emitted by the illuminator system.

16. The imaging system according to claim 9 wherein the image collecting device is a charge-coupled device (CCD).

17. The imaging system according to claim 9 wherein the first signal is a fluorescent signal and the second signal is a chemiluminescent signal.

18. The imaging system according to claim 9 wherein the image collecting device collects the second image in the absence of the first excitation energy.

19. The imaging system according to claim 9 wherein the illuminator system outputs two or more wavelengths of the first excitation energy.

20. A method for collecting images of signals using an imaging apparatus, the method comprising:

placing a sample tile on a stage of the imaging apparatus, the sample tile having an array including a plurality of features, at least a portion of the features each having a hybridized sample;

introducing a first excitation energy upon an area of the sample tile causing a first signal to be emitted, comprising flooding an entirety of the sample tile with the first excitation energy;

collecting a first image of at least a portion of the array utilizing an image collecting device of the imaging apparatus, the first image being representative of the first signal;

introducing a second excitation energy upon the area of the sample tile causing a second signal to be emitted, the second excitation energy being a different wavelength than the first excitation energy, the second signal being different than the first signal; and

collecting a second image of at least a portion of the array utilizing the image collecting device of the imaging apparatus, the second image being representative of the second signal.

21. The method according to claim 20, further comprising:

positioning a filter between the stage and the image collecting device of the imaging apparatus.