e-Petri dishes, devices, and systems having a light detector for sampling a sequence of sub-pixel shifted projection images

Patent metadata

Field	Value
Publication number	US-9643184-B2
Application number	US-201213411302-A
Country	US
Kind code	B2
Filing date	Mar 2, 2012
Priority date	Oct 26, 2010
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

An e-Petri dish comprising a transparent layer having a specimen surface and a light detector configured to sample a sequence of sub-pixel shifted projection images of a specimen located on the specimen surface. The sub-pixel shifted projection images associated with light from a plurality of illumination angles provided by an illumination source.

First claim

What is claimed is:

1. An e-Petri dish comprising:
a light detector;
a transparent layer disposed on the light detector and having a specimen surface; and
a processor,
wherein the light detector is configured to sample a sequence of sub-pixel shifted projection images of a specimen when the specimen is located on the specimen surface and while light incident the specimen from an illumination source is shifted through a plurality of illumination angles, wherein the illumination source comprises sets of light emitting components at different locations, the sets of light emitting components configured to sequentially illuminate to generate the light from the plurality of illumination angles,
wherein each sub-pixel shifted projection image is sampled at a different sampling time while the illumination source provides light from one of the illumination angles, and
wherein each sub-pixel shifted projection image is associated with light passing through the specimen, and
wherein the processor is configured to generate a sub-pixel resolution image of the specimen using image data from the sequence of sub-pixel shifted projection images of the specimen and a motion vector, wherein the processor is further configured to determine the motion vector, the motion vector associated with a plane of interest and the sub-pixel resolution image is focused at the plane of interest.

2. The e-Petri dish of claim 1 , further comprising a well coupled to the transparent layer, the well configured to contain the specimen.

3. The e-Petri dish of claim 1 , wherein there is no lens in the illumination path between the illumination source and the light detector.

4. The e-Petri dish of claim 1 , wherein the illumination source is a coherent light source.

5. The e-Petri dish of claim 1 , wherein the light detector and the illumination source are on opposing sides of the specimen surface.

6. The e-Petri dish of claim 1 , wherein the illumination angles range from −60 degree to +60 degrees with respect to the sensing surface.

7. The e-Petri dish of claim 1 , wherein the transparent layer has a thickness in a range of several hundred nanometers to microns.

8. The e-Petri dish of claim 1 , wherein each of the sets of light emitting components is a set of one or more pixels of a display.

9. The e-Petri dish of claim 8 , wherein the display is a liquid crystal display or a light emitting diode display.

10. The e-Petri dish of claim 1 , wherein each of the sets of light emitting components is a set of one or more pixels of a smartphone screen.

11. The e-Petri dish of claim 1 , wherein the light detector is an image sensor.

12. The e-Petri dish of claim 1 , wherein the light detector and the transparent layer are in the form of a CMOS image sensor comprising a PDMS layer disposed on a sensing surface.

13. An e-Petri device comprising:
a light detector;
a transparent layer disposed on the light detector and having a specimen surface;
an illumination source comprising sets of light emitting components at different locations, the sets of light emitting components configured to provide light from a plurality of illumination angles to a specimen located on the specimen surface; and
a processor,
wherein the light detector is configured to sample a sequence of sub-pixel shifted projection images of the specimen when the specimen is located on the specimen surface and while light incident the specimen from the illumination source is shifted through the plurality of illumination angles, wherein each of the sub-pixel shifted projection images is sampled at a different sampling time while the illumination source provides light from one of the illumination angles, wherein each sub-pixel shifted projection image is associated with light passing through the specimen, and wherein the sequence of sub-pixel shifted projection images is sampled at different sampling times corresponds to the plurality of illumination angles,
wherein the processor is configured to generate a sub-pixel resolution image of the specimen based on the sequence of sub-pixel shifted projection images of the specimen and a motion vector based on the sequence of sub-pixel shifted projection images, and
wherein the processor is further configured to determine the motion vector, the motion vector associated with a plane of interest wherein the sub-pixel resolution image is focused at the plane of interest.

14. The e-Petri device of claim 13 , wherein the sets of light emitting components provide light of different light intensities at different locations.

15. The e-Petri device of claim 13 ,
wherein the sets of light emitting components provide light of a plurality of wavelengths at different locations;
wherein the sequence of sub-pixel shifted projection images comprises a plurality subsequences of sub-pixel shifted projection images associated with the plurality of wavelengths; and
wherein the processor is further configured to generate a plurality of sub-pixel resolution images associated with the plurality of wavelengths and configured to combine the plurality of sub-pixel resolution images associated with the plurality of wavelengths to generate a multi-color sub-pixel resolution image of the specimen.

16. The e-Petri device of claim 13 , further comprising a well defining by a peripheral wall coupled to the specimen surface.

17. The e-Petri device of claim 16 , further comprising a cover located over the well.

18. The e-Petri device of claim 16 , wherein the well includes an array of chambers.

19. The e-Petri device of claim 13 , further comprising a dielectric cage.

20. The e-Petri device of claim 13 , further comprising a fluid channel.

21. The e-Petri device of claim 13 , wherein the light detector includes the processor.

22. The e-Petri device of claim 13 , wherein each of the sets of light emitting components is a set of one or more pixels of a display.

23. The e-Petri device of claim 13 , wherein each of the sets of light emitting components is a set of one or more pixels of a smartphone screen.

24. The e-Petri device of claim 13 , wherein the light detector is an image sensor.

25. The e-Petri device of claim 13 , wherein the light detector and the transparent layer are in the form of a CMOS image sensor comprising a PDMS layer disposed on a sensing surface.

26. An e-Petri system comprising:
one or more e-Petri devices, each e-Petri device comprising
a light detector;
a transparent layer disposed on the light detector and having a specimen surface;
an illumination source comprises sets of light emitting components at different locations, the sets of light emitting components configured to sequentially shift illumination through a plurality of illumination angles to a specimen located on the specimen surface; and
wherein the light detector is configured to sample a sequence of sub-pixel shifted projection images of the specimen when the specimen is located on the specimen surface and while light incident the specimen from the illumination source is shifted through the plurality of illumination angles,
wherein each of sub-pixel shifted projection images is sampled at a different sample time while the illumination source provides light from one of the illumination angles, and
wherein each sub-pixel shifted projection image is associated with light passing through the specimen; and

a processor configured to generate a sub-pixel resolution image of

Assignees

• Zheng Guoan
• Yang Samuel
• Lee Seung Ah
• Pang Shuo
• Yang Changhuei
• California Inst Of Techn

Inventors

• Zheng Guoan
• Yang Samuel
• Lee Seung Ah
• Pang Shuo
• Yang Changhuei

Classifications

• G01N21/03

  Cuvette constructions · CPC title

• G01N21/25

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• G01N2201/10

  Scanning · CPC title

• B01L2300/0654

  Lenses; Optical fibres · CPC title

• C12M23/10

  Petri dish (crystallising dishes B01L3/06) · CPC title