System and method for single optical axis multi-detector microscope slide scanner
View Patent ↗Systems and methods for microscope slide scanning using multiple sensor arrays that receive imagery data from a single optical axis are provided. A single, high quality, easily obtained microscope objective lens is used to project an image onto two or more sensor arrays. The sensor arrays can be linear or two dimensional and imaging takes place along a single optical axis. Simultaneous sensor acquisition and parallel data processing reduce the image acquisition time by a factor of N, where N represents the number of sensors employed.
1. A system for creating a contiguous digital image of a portion of a microscope sample, comprising:
a motorized stage configured to support a microscope sample and move the microscope sample at a constant velocity in a scan direction;
an objective lens having a single optical axis, the objective lens positioned for viewing an illuminated portion of the microscope sample;
a beam splitter optically coupled with the objective lens and configured to provide image data received from the objective lens to a plurality of sensor arrays;
a first sensor array optically coupled with the objective lens via the beam splitter and configured to capture an image of a portion of the microscope sample;
a second sensor array optically coupled with the objective lens via the beam splitter and configured to capture an image of a portion of the microscope sample at substantially the same time as the image captured by the first sensor array, wherein an edge of a first image captured by the first sensor array is adjacent to an edge of a second image captured by the second sensor array and each adjacent edge is orthogonal to the scan direction, wherein each of the first and second sensor arrays are configured to capture a plurality of images of a plurality of portions of the microscope sample while the microscope sample is moving at constant velocity in the scan direction; and
an image composer configured to arrange adjacent image portions from the first sensor array and the second sensor array into a contiguous digital image of a portion of the microscope sample.
2. The system of claim 1 , wherein the first and second sensor arrays are linear sensor arrays.
3. The system of claim 2 , wherein the each of the first and second linear sensor arrays comprise a plurality of parallel linear sensors wherein each of the plurality of parallel linear sensors is configured to capture image data related to a specific color.
4. The system of claim 3 , wherein a first linear sensor is configured to capture image data related to the color red, a second linear sensor is configured to capture image data related to the color green, and a third linear sensor is configured to capture image data related to the color blue.
5. The system of claim 1 , wherein the first and second sensor arrays are time delay integration sensor arrays.
6. The system of claim 1 , wherein the first and second sensor arrays are rectangular sensor arrays.
7. The system of claim 1 , wherein the first and second sensor arrays are logically positioned along the optical path of the objective lens such that they are logically adjacent to each other along the optical path of the objective lens.
8. The system of claim 1 , further comprising a third sensor array optically coupled with the objective lens via the beam splitter.
9. The system of claim 8 , wherein the third sensor array is configured to capture an image of a portion of the microscope sample at substantially the same time as the images captured by the first sensor array and the second sensor array.
10. The system of claim 9 , wherein a first edge of a third image captured by the third sensor array is adjacent to an edge of a second image captured by the second sensor array, wherein the adjacent edges are each orthogonal to the scan direction.
11. A method for creating a contiguous digital image of a portion of a microscope sample, comprising:
accelerating a microscope sample along a first path to a constant velocity relative to an objective lens having a single optical path;
receiving image data through the objective lens while the microscope sample is moving at constant velocity;
replicating the image data onto a plurality of discrete sensor arrays, wherein each discrete sensor array is logically positioned to sense substantially adjacent image data received through the objective lens;
capturing substantially adjacent image data at each of the plurality of discrete sensor arrays at substantially the same time a while the microscope sample is moving at constant velocity;
storing the substantially adjacent image data captured by each of the plurality of discrete sensor arrays;
arranging the substantially adjacent image data captured by each of the plurality of discrete sensor arrays into a contiguous digital image of a portion of the microscope sample.
12. The method of claim 11 , wherein the plurality of discrete sensor arrays are linear sensor arrays.
13. The method of claim 11 , wherein the plurality of discrete sensor arrays are rectangular sensor arrays.
14. The method of claim 11 , wherein the plurality of discrete sensor arrays are time delay integration sensor arrays.
15. The method of claim 11 , wherein the replicating step further comprises:
reproducing the image data from the optical path of the objective lens; and
directing said reproduced image data onto a sensor array via an optical path that is angular with respect to the optical path of the objective lens.
16. A system for creating a contiguous digital image of a portion of a microscope sample, comprising:
a motorized stage configured to support a microscope sample and move the microscope sample in a scan direction;
an objective lens having a single optical axis, the objective lens positioned for viewing an illuminated portion of the microscope sample;
a beam splitter optically coupled with the objective lens and configured to provide image data received from the objective lens to a plurality of sensor arrays;
a first sensor array optically coupled with the objective lens via the beam splitter and configured to capture a first image of a portion of the microscope sample, said first image having a first edge that is orthogonal to the scan direction;
a second sensor array optically coupled with the objective lens via the beam splitter and configured to capture a second image of a portion of the microscope sample, said second image having a second edge that is orthogonal to the scan direction, wherein the first edge of the first image is adjacent to the second edge of the second image; and
an image composer configured to arrange said adjacent first image and second image into a contiguous digital image of a portion of the microscope sample.
17. The system of claim 16 , wherein the first and second sensor arrays are linear sensor arrays.
18. The system of claim 17 , wherein the each of the first and second linear sensor arrays comprise a plurality of parallel linear sensors wherein each of the plurality of parallel linear sensors is configured to capture image data related to a specific color.
19. The system of claim 16 , wherein the first and second sensor arrays are time delay integration sensor arrays.
20. The system of claim 16 , wherein the first and second sensor arrays are rectangular sensor arrays.
21. The system of claim 16 , wherein the first and second sensor arrays are logically positioned along the optical path of the objective lens such that they are logically adjacent to each other along the optical path of the objective lens.
22. The system of claim 16 , further comprising a third sensor array optically coupled with the objective lens via the beam splitter.
23. The system of claim 22 , wherein a third edge of a third image captured by the third sensor array is adjacent to a fourth edge of the second image captured by the second sensor array, wherein the third edge of the third image is orthogonal to the scan direction.