Method and apparatus for a microscope image selector

• US 20060170922A1
• Filed: 01/31/2005
• Published: 08/03/2006
• Est. Priority Date: 01/31/2005
• Status: Active Grant

• Current Assignee: Chemimage Corporation
• Original Assignee: Chemimage Corporation
• Inventors: Wang, Xinghua, Wang, Chenhui, Tuschel, David, Treado, Patrick J., Voigt, Thomas C.
• Granted Patent: US 7,283,241 B2
• Time in Patent Office: Days
• US Class Current: 356/417
• CPC Class Codes: G01J 3/02 Details
• CPC Class Codes: G01J 3/0291 Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
• CPC Class Codes: G01J 3/36 Investigating two or more bands of a spectrum by separate detectors
• CPC Class Codes: G01J 3/44 Raman spectrometry; Scattering spectrometry ; Fluorescence spectrometry
• CPC Class Codes: G01N 2021/6419 Excitation at two or more wavelengths
• CPC Class Codes: G01N 2021/6421 Measuring at two or more wavelengths
• CPC Class Codes: G01N 2021/656 Raman microprobe
• CPC Class Codes: G01N 21/359 using near infrared light
• CPC Class Codes: G01N 21/59 Transmissivity G01N21/25 takes precedence
• CPC Class Codes: G01N 21/6458 Fluorescence microscopy fluorescence microscopes per se G02B21/0076 and G02B21/16
• CPC Class Codes: G01N 21/65 Raman scattering

Abstract

The disclosure generally relates to a multimode imaging apparatus for simultaneously obtaining multiple wavelength-discriminative spectral images of a sample. In one embodiment, the apparatus includes an image selector having a rotator assembly, the rotator assembly housing a first plurality of optical components, the image selector adapted to receive a illuminating photons having a first wavelength and direct the illuminating photons to the sample, the image selector adapted to receive illuminating photons interacted with the sample and selectively direct said interacted photons to one of a plurality of detection sources; a microscope turret housing a second plurality of components, the microscope turret adapted to receive illuminating photons having a second wavelength and direct the photons to the sample; the microscopic turret adapted to receive illuminating photons interacted with the sample and selectively direct said interacted photons to one of a plurality of detection sources; wherein substantially all of the interacted photons are selectively directed one of a plurality of detection sources to form multiple wavelength discriminative spectral images of the sample simultaneously.

Claims

1. A multimode imaging apparatus for simultaneously obtaining multiple wavelength-discriminative spectral images of a sample, the apparatus comprising:

an image selector housing a first plurality of optical components, the image selector adapted to receive illuminating photons having a first wavelength and direct the illuminating photons to the sample, the image selector adapted to receive illuminating photons interacted with the sample and selectively direct said interacted photons to one of a plurality of detection sources; and

a microscope turret housing a second plurality of components, the microscope turret adapted to receive illuminating photons having a second wavelength and direct the photons to the sample;

the microscopic turret adapted to receive illuminating photons interacted with the sample and selectively direct said interacted photons to one of a plurality of detection sources;

wherein substantially all of the interacted photons are selectively directed to one of a plurality of detection sources to form multiple wavelength discriminative spectral images of the sample simultaneously.

2. The apparatus of claim 1, wherein the interacted photons further comprise photons scattered, reflected, refracted, luminescence, fluorescence, Raman scattered, transmitted, absorbed and emitted by the sample.

3. The apparatus of claim 1, further comprising a plurality of illumination sources, each illumination source providing illuminating photons to the sample at a wavelength.

4. The apparatus of claim 3, wherein each illumination source further comprises a diachronic filter for rejecting unwanted wavelength spectrum at the output.

5. The apparatus of claim 3, wherein the illumination source further comprises a fluorescence/NIR illuminator, a visible transmissive illuminator and a Raman illuminator.

6. The apparatus of claim 3, wherein the plurality of illumination sources are coupled to the multimodal system.

7. The apparatus of claim 1, wherein the first plurality of optical components further comprises an optical mirror, a dichroic mirror, an emission filter and an excitation filter.

8. The apparatus of claim 1, wherein the second plurality of components further comprises a beam splitter, a dichroic mirror and an optical filter.

9. The apparatus of claim 1, further comprising a lens selected from the group consisting of a microscope objective, a telescope, a macro-optical device, micro-fiber optic bundle and coherent fiber optic bundle.

10. The apparatus of claim 1, further comprising an acromatic reflective optical assembly.

11. The apparatus of claim 1, further comprising a video camera in communication with the imaging system.

12. The apparatus of claim 11, wherein a dichroic filter is interposed between said video camera and the imaging system to reject unwanted spectrum of wavelength prior to input to the video camera.

13. A method for simultaneously providing multiple wavelength-discriminative spectral image of a sample comprising:

providing a plurality illuminating photons to the sample, the illuminating photons defining a plurality of wavelengths and interacting with the sample to provide interacted photons having a plurality of wavelengths;

receiving the interacted photons at a microscope turret for discriminatively filtering the photons to one of reflect or refract photons as a function of the photon wavelength;

the microscopic turret directing the refracted photons to a first imaging device;

providing an image selector for receiving the photos reflected by the microscope turret and further discriminatively filtering the received photons to one of a second imaging device or a third imaging device as a function of the photon wavelength;

wherein each of said imaging devices receives the wavelength-discriminated photons substantially simultaneously and provides a wavelength-discriminative spectral image of the sample.

14. The method of claim 13, wherein the interacted photons further comprise photons scattered, reflected, refracted, luminescence, fluorescence, Raman scattered, transmitted, absorbed and emitted by the sample.

15. The method of claim 13, further comprising providing a plurality of illumination sources, each illumination source providing illuminating photons at a wavelength.

16. The method of claim 15, further comprising interposing a dichroic filter between the illumination source and the microscope turret or image selector to reject unwanted wavelength spectrum from the illuminating photons.

17. The method of claim 15, the plurality of illumination sources further comprise a fluorescence/NIR illuminator, a visible transmissive illuminator and a Raman illuminator.

18. The method of claim 15, the plurality of illumination sources are coupled to one of the microscopic turret or the image selector.

19. The method of claim 13, wherein the step of discriminatively filtering the interacted photons is implemented by an optical mirror, a dichroic mirror, a beam splitter, an emission filter or an excitation filter.

20. The method of claim 13, wherein the step of providing a plurality illuminating photons to the sample further comprises communicating said illuminating photons to the sample through a microscopic train.

21. The method of claim 13, further comprising a video camera in communication with the imaging system.

22. The method of claim 21, further comprising interposing a dichroic filter between the video camera and the imaging system to reject unwanted spectrum of wavelength prior to input to the video camera.

23. The method of claim 13, wherein the illuminating photons defining a plurality of wavelengths include VIS, NIR, Fluorescent, and Raman wavelengths.

24. A method for obtaining different images of a sample by combining wavelength-selective spectral images of the sample simultaneously, the method comprising:

illuminating the sample with illuminating photons defining a plurality of wavelengths and interacting with the sample to provide interacted photons having a plurality of wavelengths;

receiving the interacted photons at a microscope turret and discriminatively filtering the photons to one of reflect or refract photons as a function of the photon wavelength;

the microscopic turret directing the refracted photons to a first imaging device;

receiving the reflected photons at an image selector and discriminatively directing the received photons to one of a second imaging device or a third imaging device as a function of the photon wavelength;

wherein each of said imaging devices receives the wavelength-discriminated photons substantially simultaneously and provides a wavelength-discriminative spectral image of the sample.

25. The method of claim 24, wherein the interacted photons further comprise photons scattered, reflected, refracted, luminescence, fluorescence, Raman scattered, transmitted, absorbed and emitted by the sample.

26. The method of claim 24, further comprising providing a plurality of illumination sources, each illumination source providing illuminating photons at a wavelength.

27. The method of claim 26, further comprising interposing a dichroic filter between at least one illumination source and the source and the microscope turret or image selector to reject unwanted wavelength spectrum from the illuminating photons.

28. The method of claim 26, wherein the plurality of illumination sources further comprise a fluorescence/NIR illuminator, a visible transmissive illuminator and a Raman illuminator.

29. The method of claim 26, wherein the plurality of illumination sources are coupled to one of the microscopic turret or the image selector.

30. The method of claim 24, wherein the step of discriminatively filtering the interacted photons is implemented by an optical mirror, a dichroic mirror, a beam splitter, an emission filter or an excitation filter.

31. The method of claim 24, wherein the step of providing a plurality illuminating photons to the sample further comprises communicating said illuminating photons to the sample through a microscopic train.

32. The method of claim 24, further comprising a video camera in communication with the imaging system.

33. The method of claim 32, further comprising interposing a dichroic filter to prevent unwanted wavelength spectrum from entering the video camera.

34. The method of claim 24, wherein the illuminating photons defining a plurality of wavelengths include VIS, NIR, Fluorescent, and Raman wavelengths.