Arrangement for the optical capture of excited and /or back scattered light beam in a sample

1. An arrangement for the optical detection of light radiation which is excited and/or backscattered in a specimen, comprising:

means for focusing specimen illumination in and/or in the vicinity of a pupil plane of a beam path between a specimen plane and a detection plane; and

apparatus being provided in said pupil plane for spatially separating the illumination light from the detection light; wherein said apparatus comprises a beam splitter.

2. The arrangement according to claim 1 , wherein fluorescent light and/or luminescent light and/or phosphorescent light and/or diffusely scattered illumination light coming from the specimen is detected.

3. The arrangement according to claim 1 , wherein the apparatus for spatial separation comprises at least a reflecting first portion and at least a transmitting second portion, wherein the reflecting portion serves to couple in the illumination light and the transmitting portion serves to pass the detection light in the detection direction, or the transmitting portion serves to couple in the illumination light and the reflecting portion serves to couple out the detection light.

4. The arrangement according to claim 1 , wherein a beam splitter is provided which has a central portion which is constructed so as to be reflecting or transmitting and which is surrounded by a second portion which is constructed so as to be transmitting or reflecting.

5. The arrangement according to claim 4 , wherein the beam splitter is constructed as a H polarization splitter.

6. The arrangement according to claim 4 , where in scanning is carried out with the beam splitter.

7. The arrangement according to claim 1 , with oblique illumination for a wide field microscope.

8. The arrangement according to claim 7 , wherein a lens which is displaceable vertical to the optical axis is provided.

9. The arrangement according to claim 1 , wherein a wide field microscope with structured illumination is provided.

10. The arrangement according to claim 9 , wherein a depth-resolved detection of the specimen is carried out.

11. The arrangement according to claim 1 , in a laser scanning microscope.

12. The arrangement according to claim 1 , wherein a line scanner is provided.

13. The arrangement according to claim 12 , wherein the scanning line is overlaid with structured illumination.

14. The arrangement according to claim 12 , wherein the length of the line is varied by varying the focal length and/or imaging scale of a microscope arrangement.

15. The arrangement according to claim 12 , wherein the length of the line is varied by means of adaptive optics.

16. The arrangement according to claim 12 , wherein the length of the line is varied by an adjustable diaphragm.

17. The arrangement according to claim 1 , with descanned detection.

18. The arrangement according to claim 1 , with partially descanned detection in one direction.

19. The arrangement according to claim 1 , with nondescanned detection.

20. The arrangement according to claim 1 , wherein the detection is carried out by a CCD camera.

21. The arrangement according to claim 1 , wherein a sampling and/or detection of selected specimen areas is carried out.

22. An arrangement for the optical detection of light radiation coming from a specimen, comprising:

optics that focus specimen illumination in or near the vicinity of a pupil plane of a beam path between a specimen plane and a detection plane;

a spatial separator positioned in the pupil plane for spatially separating the specimen illumination from the detection light; and

a detector device that detects the detection light coming from the spatial separator.