Method and Arrangement for Examining a Specimen by Means of Light Sheet Microscopy
First Claim
1. A light microscope, comprisingan illumination apparatus that generates coherent illumination light having several illumination wavelengths,a beam-shaping module that generates a light sheet from the illumination light,an illumination objective for the illumination of a specimen with the light sheet,a detection objective for imaging light emitted by the specimen onto a laminar detector, wherein the optical axis of the detection objective forms an angle different from 0°
- and 180°
with the optical axis of the illumination objective,wherein the beam-shaping module comprises a phase-selective element arranged in or near an intermediate plane and having a plurality of selection areas that are separated from each other spatially,wherein one selection area is assigned to one specific illumination wavelength, andwherein a phase distribution predefined for the respective illumination wavelength is impressed on each selection area, andwherein the beam-shaping module comprises selecting means for sequentially or simultaneously selecting the selection areas in dependence on the respective illumination wavelength, andwherein the selecting means is formed to direct light of the respective illumination wavelength onto an assigned selection area.
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Abstract
The invention relates to a light sheet microscope which comprises an illumination apparatus, which generates coherent illumination light for several illumination wavelengths, a beam-shaping module (8) for generating a light sheet from illumination light, an illumination objective (10) for the illumination of a specimen (1) with the light sheet and a detection objective (12) for imaging light which is emitted by the specimen onto a laminar detector, wherein the optical axis of the detection objective (12) forms an angle different from 0° and 180° with the optical axis of the illumination objective (10).
In such a light sheet microscope, the beam-shaping module (8) comprises a phase-selective element (19) on which several selection areas (20) separated from each other spatially are arranged, wherein in each case one selection area (20) is assigned to one specific illumination wavelength, and wherein a phase distribution predefined for the respective illumination wavelength is impressed on each selection area (20). In addition, the beam-shaping module (8) comprises means for the sequential or simultaneous selection of the selection areas (20) in dependence on the respective illumination wavelength.
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Citations
26 Claims
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1. A light microscope, comprising
an illumination apparatus that generates coherent illumination light having several illumination wavelengths, a beam-shaping module that generates a light sheet from the illumination light, an illumination objective for the illumination of a specimen with the light sheet, a detection objective for imaging light emitted by the specimen onto a laminar detector, wherein the optical axis of the detection objective forms an angle different from 0° - and 180°
with the optical axis of the illumination objective,wherein the beam-shaping module comprises a phase-selective element arranged in or near an intermediate plane and having a plurality of selection areas that are separated from each other spatially, wherein one selection area is assigned to one specific illumination wavelength, and wherein a phase distribution predefined for the respective illumination wavelength is impressed on each selection area, and wherein the beam-shaping module comprises selecting means for sequentially or simultaneously selecting the selection areas in dependence on the respective illumination wavelength, and wherein the selecting means is formed to direct light of the respective illumination wavelength onto an assigned selection area. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 25, 26)
- and 180°
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6. (canceled)
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15. A method for examining a specimen by light sheet microscopy, comprising:
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selecting several illumination wavelengths for composing illumination light for the specimen, impressing a predefined phase distribution on a phase-selective element for each of the illumination wavelengths, wherein each of the predefined phase distributions is impressed on the phase-selective element in its own selection area, which is assigned to the respective illumination wavelength and does not overlap with the other selection areas, illuminating the phase-selective element with illumination light in or near to an intermediate image plane in an illumination beam path, wherein only light of the respective illumination wavelength is directed onto each selection area and structured by the phase-selective element before the light of the different illumination wavelengths is combined to form a common beam, shaping, in a focal plane of the downstream illumination objective, a structured light sheet of the respective illumination wavelength with a light sheet plane which is perpendicular to the focal plane of the illumination objective, and illuminating the specimen with the structured light sheets of the respective illumination wavelengths in the light sheet plane, and detecting light emitted by the specimen in a detection direction which forms an angle different from zero with the light sheet plane. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification