EP4133322A1 - Schiefeebenemikroskop mit verbesserter sammeleffizienz - Google Patents
Schiefeebenemikroskop mit verbesserter sammeleffizienzInfo
- Publication number
- EP4133322A1 EP4133322A1 EP21718825.9A EP21718825A EP4133322A1 EP 4133322 A1 EP4133322 A1 EP 4133322A1 EP 21718825 A EP21718825 A EP 21718825A EP 4133322 A1 EP4133322 A1 EP 4133322A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- intermediate image
- erecting unit
- real intermediate
- field
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/0004—Microscopes specially adapted for specific applications
- G02B21/002—Scanning microscopes
- G02B21/0024—Confocal scanning microscopes (CSOMs) or confocal "macroscopes"; Accessories which are not restricted to use with CSOMs, e.g. sample holders
- G02B21/0032—Optical details of illumination, e.g. light-sources, pinholes, beam splitters, slits, fibers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/0004—Microscopes specially adapted for specific applications
- G02B21/002—Scanning microscopes
- G02B21/0024—Confocal scanning microscopes (CSOMs) or confocal "macroscopes"; Accessories which are not restricted to use with CSOMs, e.g. sample holders
- G02B21/0052—Optical details of the image generation
- G02B21/0076—Optical details of the image generation arrangements using fluorescence or luminescence
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
- G02B21/365—Control or image processing arrangements for digital or video microscopes
- G02B21/367—Control or image processing arrangements for digital or video microscopes providing an output produced by processing a plurality of individual source images, e.g. image tiling, montage, composite images, depth sectioning, image comparison
Definitions
- the invention relates to an inclined plane microscope, comprising a detection arrangement for collecting scattered and / or fluorescent light from areas of a sample volume illuminated by a light sheet, the detection arrangement being designed on its side facing away from the sample volume a real intermediate image of the areas illuminated by the light sheet image of the sample and wherein the real intermediate image is tilted to a focal plane of the Detekti onsanssen, and an optical erecting unit for imaging a predetermined image field of the real intermediate image on a detector, the erecting unit having a depth of field.
- the invention also relates to a method for recording images representing planes of a sample, comprising collecting scattered and / or fluorescent light from areas of a sample volume illuminated by a light sheet with a detection arrangement, generating a real intermediate image of the areas illuminated by the light sheet Sample volume with the detection arrangement, the real intermediate image being tilted to a focal plane of the detection arrangement, and the imaging of a predetermined image field of the real intermediate image on a detector by an optical Aufrichteein.
- the invention also relates to the use of an erecting unit in an inclined plane microscope for imaging a predetermined image field of a real intermediate image generated by a detection arrangement on a detector, the real intermediate image being tilted to a focus plane of the detection arrangement and the erecting unit having a focus depth range.
- an erecting unit In inclined plane microscopes, such as an OPM or a SCAPE microscope, an erecting unit is used, by means of which an image of a plane of the sample illuminated obliquely by the light sheet is sharply focused on a detector, i.e. is erected.
- the problem with an erecting unit is that a large part of the sample light that is collected by the objective facing the sample does not reach the detector.
- the depth of field would have to be increased very greatly for large image fields.
- the optical axes of the detection arrangement and the erecting unit can run collinear with one another, which leads to a simple structure of the entire system.
- the erecting unit thus de facto aligns the oblique real intermediate image no longer appears and only represents an imaging optics.
- a strong increase in the depth of field necessary for this is, however, very demanding with regard to the correction which corrects the artifacts associated with this increase and can lead to problems. If the inclination of the erecting unit is dispensed with, the optical axes of the detection arrangement and the erecting unit run collinearly or parallel to one another.
- the object of the present invention is therefore to create an inclined plane microscope and a method which make it possible to increase the light yield.
- the present invention solves this problem for the oblique plane microscope described above in that a focal plane of the erecting unit is tilted by an offset angle to the real intermediate image, and that the predetermined image field of the real intermediate image to be mapped by the erecting unit lies completely within the depth of field of the erecting unit.
- the present invention solves this problem for the above-described process by tilting a focal plane of the erecting unit by an offset angle to the real intermediate image, the predetermined image field of the real intermediate image being completely within a depth of field of the erecting unit.
- the straightening unit is used in an inclined plane microscope, a focal plane of the straightening unit being tilted by an offset angle to the real intermediate image, and the predetermined image field of the real intermediate image to be mapped by the straightening unit lies completely within the depth of field.
- the invention thus has the advantage that tilting the erecting unit by an offset angle to the real intermediate image makes it possible to arrange the erecting unit closer to the optical axis of the detection arrangement and to reduce the angle between the optical axes of the detection arrangement and erecting unit. This in turn makes it possible to collect more scattered and / or fluorescent light with the erecting unit without, for example, having to modify optical components of the erecting unit.
- an enlarged possible tilting of the erecting unit increases the easier replacement of the same and thus the flexibility of the inclined plane microscope.
- the present invention thus improves inclined plane microscopes and methods from the prior art, which are subject to a limitation of the resolution in that the full aperture of the detection arrangement cannot be tapped with the erecting unit.
- Which he- Finding improves solutions from the state of the art also with regard to their flexibility.
- lens changes can be carried out with the invention in practice.
- cover glasses In the solutions from the prior art, there is also no or only limited compatibility with cover glasses. For example, these cannot simply be added to the optical structure without noticeably impairing the measurement. In the inclined plane microscope according to the invention, on the other hand, cover glasses can be used without noticeably impairing the quality of the measurement.
- the inclined plane microscope according to the invention or the method according to the invention can be further improved by the embodiments described below.
- the additional features of the inclined plane microscope or process steps of the process described below can be combined with one another as desired.
- device features can be transferred to a corresponding method according to the invention, and method features can be transferred to a corresponding device.
- the term “detection arrangement” is to be understood as an optical arrangement that allows scattered and / or fluorescent light to be collected from areas of a sample volume illuminated by a light sheet.
- a detection arrangement can also be used simultaneously to illuminate the sample. For this purpose, a beam path of the illuminating light and a beam path of the detection light (scattered light / fluorescent light) can run in different areas of the detection arrangement.
- the optical arrangement depicting the real intermediate image is inclined to the optical axis the detection arrangement aligned.
- the optical axis of this imaging optical arrangement is preferably perpendicular to the real intermediate image in order to achieve the sharp image.
- This imaging optical arrangement is usually referred to as the “erecting unit”, since the inclined arrangement of the erecting unit erects the real intermediate image in this vertical position.
- the "depth of field” is an axial extent within which a pixel to be imaged can be located without the imaging of this pixel on a detector leading to a circle of confusion that is larger than a permissible circle of confusion.
- the permissible circle of confusion is generally defined by the detector used (for example with the aid of the pixel dimensions) and characterizes a maximum size of a circular image that can still be sharply imaged with this detector.
- the erecting unit is preferably tilted towards an optical axis of the detection arrangement, wherein, despite the tilting, the depth of field of the erecting unit completely encompasses or includes the image field of the real intermediate image to be imaged.
- the real intermediate image can be arranged diagonally in the depth of field.
- the possible tilting of the erecting unit towards the optical axis of the detection arrangement is thus determined by the width of the image field to be imaged and by the depth of field of the erecting unit.
- the width of the image field to be imaged is measured perpendicular to the optical axis of the detection system. If the real intermediate image is thus located within the depth of field, it can preferably be imaged on the detector without any loss of information.
- an optical axis of the erecting unit can be tilted towards the optical axis of the detection arrangement.
- the erecting unit can have at least one immersion optic.
- This has the advantage that an optical medium adapted to the refractive index of the erecting unit, for example a liquid, is arranged between the erecting unit and the real intermediate image, which increases the acceptance angle of the erecting unit at which light can be absorbed by it. This acceptance angle is described by the numerical aperture (NA).
- NA numerical aperture
- the provision and / or enlargement of the depth of field of the erecting unit enables the erecting unit to be tilted by the offset angle.
- One possibility of increasing the depth of field of the erecting unit is to generate aberrations that increase the sharpness, in particular spherical aberrations, in the erecting unit. These can be caused, for example, by a mismatching of the detection arrangement a refractive index, for example of an immersion medium, can be generated.
- a refractive index for example of an immersion medium
- the erecting unit can also have a phase mask and / or an amplitude mask in order to enlarge the depth of field. Both the phase mask and the amplitude mask can be arranged in the pupil of the erecting unit, so that they can be referred to as pupil filters.
- a ring-shaped amplitude mask or a phase mask in which the phase delay is linearly dependent on the radius (the radius is the distance to the optical axis of the erecting unit) can, for example, modify the so-called point-spread function (PSF) of the erecting unit in such a way that that this has the cross-section of a Bessel function.
- PSF point-spread function
- phase or amplitude mask does not have to be rotationally symmetrical.
- a linear, rotationally symmetrical phase mask can transform the PSF into a shape that corresponds to a Bessel beam (i.e. the cross-section of the PSF follows a Bessel function or can be approximately described by one). The depth of field is increased.
- a cubic, non-rotationally symmetrical phase mask can generate a PSF that corresponds to an Airy beam and also has an increased depth of field.
- a pupil filter can thus transform a diffraction-limited PSF in such a way that an increased depth of field and an associated reduced axial resolution are obtained.
- the reduced axial resolution is ideally not associated with a corresponding loss of lateral resolution.
- the straightening unit can comprise at least one lens whose positioning relative to the intermediate image deviates from a position in which the straightening unit generates the smallest spherical aberrations when imaging the intermediate image.
- an arrangement / position with minimized aberrations can be calculated or found.
- the refractive power is distributed over as many surfaces of the optics as possible.
- an aberration-prone arrangement includes any arrangement / position of the lens / lens system that deviates from the aberration-minimized arrangement / position.
- the position of the detector relative to the erecting unit can be along the optical axis of the erecting unit in comparison to the aberration-minimized arrangement / position in order to position the detector in or near the image plane of the erecting unit.
- the erecting unit (and thus also its lenses) can be arranged at a working distance from the real intermediate image that deviates from the free working distance defined by the erecting unit (if this is set, an arrangement / position with minimized aberrations is present).
- the defined free working distance is to be understood as the working distance for which the erecting unit has the lowest spherical aberrations.
- the spherical aberrations that occur when this arbitrary working distance is set increase the depth of field of the erecting unit, which enables the erecting unit to be tilted.
- An erecting unit could, for example, comprise at least two lenses. If such a lens system is optimized so that spherical aberrations are minimal when the real intermediate image is located in a front focal plane of a front lens, it is advantageous if the working distance to the real intermediate image is chosen so that it is from the focal length of the front lens deviates, for example is therefore larger.
- the terms “front” or “front” refer to a direction from the erecting unit to the real intermediate image.
- the front lens is thus arranged closer to the real intermediate image than the other of the two lenses. In the case of a larger working distance, this procedure consequently also enables larger lenses to be used.
- the imaged plane (object plane) lies further away from the first lens compared to the focal plane.
- such an erecting unit leads to an increase in the spherical aberrations and consequently to an increase in the depth of field, which in turn allows the erecting unit to be tilted.
- the erecting unit can be designed in such a way that spherical aberrations occur, but other imaging errors (such as chromatic aberrations, distortion, vignetting, etc.) are largely avoided. For example, this can be taken into account in the optical design of the properties of the lens, since imaging errors can usually be corrected separately from one another.
- the erecting unit can comprise a microlens array.
- a microlens array has a larger depth of field than a single lens with the same entry surface as the microlens array due to a large number of lenses with a small diameter and large numerical aperture.
- a detector in a further embodiment of the inclined plane microscope according to the invention, has a plurality of pixels that have a pixel size which is equal to or less than half of a scattering circle diameter, the scattering circle diameter resulting from the depth of field, the focal length and the aperture number of the erecting unit and its working distance to the real intermediate image.
- the diameter of the circle of confusion determines whether an object is shown in focus on the detector or not. If there is - when viewed in geometric optics - an object point (sample-side point) in an object plane of a lens, light emanating from this point is focused in the associated image plane in an image point. A detector placed in this plane detects a sharp image. If the object point is no longer in the original object plane of the lens, the light cone originally converging in the image plane is, for example, cut off and a circle of confusion arises on the detector.
- Airy disk the cross section perpendicular to the optical axis through the PSF
- a point in the object to be reproduced i.e. the sample
- Airy disk becomes an Airy disk in the image.
- Disc or generally the PSF).
- the detector is selected in such a way that the circle of confusion corresponds to a maximum tolerable diameter of the circle of confusion, so that a sharp image is obtained.
- the depth of field of the optical system can usually be varied, the depth of field being directly proportional to the number of diaphragms.
- the f-number relates to the image side of an optical system and can also be calculated from an image-side opening angle.
- NA numerical aperture
- a sharp image of the real intermediate image within the depth of field is possible solely through the geometry of the detector and its pixels as well as the scattering circle diameter achieved with the erecting unit.
- the point-spread function can deform.
- Such a deformed PSF can flow into the PSF of the complete system, that is, it can be taken into account in the image processing.
- the images of a stack of images can be unfolded. Due to the tilting, the deformed PSF can vary in location within a recorded image and does not only depend on the lighting. A relative position of a detection and an illumination PSF varies due to the tilt across the image field.
- artifacts can be reduced by unfolding the recorded images with a modified PSF.
- a further reduction of artifacts can be achieved by further computer-aided image improvement methods (for example by so-called “computational clearing” as described in WO 2019/185174 A1).
- the aforementioned aberrations that increase the depth of field can be generated by a mismatch of the refractive index, by pupil filters or by an errational arrangement of the erecting unit.
- a non-telecentric system can be used.
- the straightening unit consists of two lenses (objective and tube lens), characterized in that these two lenses are not arranged at a distance from one another which corresponds to the sum of their focal lengths.
- the plane to be imaged by the erecting unit on the detector can be further away from the erecting unit than its focal plane, i.e. the working distance can be increased and the erecting unit can be tilted more towards the optical axis of the detection arrangement without hitting the detection arrangement.
- recorded image data can be rearranged so that each image obtained represents a plane which is perpendicular is oriented to the optical axis of the detection arrangement.
- a post-processing step can be used to compensate for recorded artifacts that are caused by increasing the depth of field.
- the system PSF inherent in the inclined plane microscope corresponds to a product of the PSF for illumination and the PSF for detection and can be used for unfolding. This has the peculiarity that Illumination and detection are neither collinear nor perpendicular to each other.
- the post-processing steps can also be combined with one another; for example, after the recorded image data have been rearranged, the image of the plane thus obtained can each be unfolded with a single (appropriately rotated) system PSF.
- a homogeneous blurring can be assumed in these planes, which can be taken into account in the image processing.
- the illumination and the detection do not necessarily have to be perpendicular to one another. This means that the lighting can partially run in the detection light cone. If the illumination and detection are not perpendicular to one another, then the detection can, under certain circumstances, at least partially take place in a direction that is opposite to the illumination.
- the light sheet illuminating the sample can enclose the detection light cone in an area outside the depth of field of the erecting unit in the sample. Since the detection sometimes takes place in the opposite direction of illumination, the optical sectioning can decrease. This can lead to a loss of contrast.
- the computational clearing and / or optical clearing of the sample can be particularly advantageous in this case, since these two methods make it possible to compensate or prevent this loss of contrast.
- the inclined plane microscope according to the invention and the method according to the invention allow a simple change of the detection arrangement, so that an illumination beam can also be coupled into the detection arrangement for a detection arrangement with a larger or smaller aperture at the edge of the pupil. This can change the angle between the light sheet and the optical axis. As long as the change in angle of the light sheet to the optical axis and a resulting change in angle of the real intermediate image remains within the fentief Anlagenes of the erecting unit, no additional blurring of the recorded images occurs by changing the detection arrangement.
- a penetration depth in the sample can be varied.
- An increased depth of field according to the inclined plane microscope or the method of the present invention allows a leeway with regard to the tilting of the erecting unit to the optical axis and enables the tilt angle to be changed.
- the possibility of increasing the offset angle between the detection arrangement and the real intermediate image is particularly advantageous if the image quality is maintained, i.e.
- the detector used in the inclined plane microscope according to the invention or in the method according to the invention can be a camera (CCD, CMOS, etc.) known from the prior art.
- CCD CCD
- CMOS complementary metal-oxide-semiconductor
- the present invention enables the erecting unit to be tilted by approximately 8 ° with an image field of 20 ⁇ m and for a depth of field of 5 ⁇ m. Such a possible tilting can already prevent a collision of the detection arrangement with the erecting unit.
- spherical aberrations described in some embodiments result in the fact that high spatial frequencies are still transmitted in the area of the sample to be imaged, but are more attenuated due to a modulation transfer function (MTS) changed by the spherical aberrations.
- MTS modulation transfer function
- these spatial frequencies can be amplified, for example by the deconvolution with the modified PSF, and thus the higher spatial frequencies can be more clearly separated from the noise, so that they are not completely covered by noise.
- a denoise before deployment is also conceivable.
- FIG. 2 shows a detail of the schematic representation of FIG. 1
- FIG. 3 shows a further embodiment of the erecting unit according to the invention.
- FIG. 6 shows a schematic representation of the inclined plane microscope to illustrate the detection light cone.
- 1 shows an inclined plane microscope 101 in a schematic representation.
- the tilting plane microscope 101 comprises a detection arrangement 103, by means of which scattered and / or fluorescent light 105 is collected from areas 109 of a sample volume 111 illuminated by a light sheet 107.
- the light sheet 107 is formed by illuminating light 107a focused in the sample volume 111.
- the illuminating light 107a can be introduced into the inclined plane microscope 101 via a mirror arrangement 107b, for example.
- the coupling in of the illuminating light 107a is shown purely by way of example and can take place in other configurations at other locations in the inclined plane microscope 101.
- the detection arrangement 103 images the areas 109 of the sample 111b illuminated by the light sheet 107 on a side 113 facing away from the sample volume 111 in a real intermediate image 115.
- This real intermediate image 115 is tilted with respect to a focal plane 117 of the detection arrangement 103.
- the detection arrangement 103 is shown purely by way of example by two lenses 103a. In other configurations, these lenses 103a shown here can also each be an objective 103b.
- the lens 103a which faces the sample volume 111, can be immersion optics 135.
- a lens 103a can be a first detection optics 103c which collects the scattered and / or fluorescent light 105 originating from a sample side 111a.
- the detection arrangement 103 can be a telescope 104 and furthermore comprise a second detection optics 103d pointing towards the side 113 facing away from the sample volume 111.
- the inclined plane microscope 101 comprises an optical erecting unit 119, by means of which a predetermined image field 121 of the real intermediate image 115 is imaged on a detector 123.
- the predetermined image field 121 is shown purely schematically as a one-dimensional width 121a, but can be understood as a two-dimensional area which additionally protrudes into or out of the plane of the drawing. This two-dimensional area is defined by the width 121a shown and a depth which is not shown.
- the real intermediate image 115 can extend beyond the predetermined image field 121.
- the erecting unit 119 has a depth of field 129 which is shown schematically as a rectangle in the enlarged area 129a.
- the depth of field 129 also protrudes into or out of the drawing plane and can be understood as a cuboid. All of them Points located within this cuboid can be sharply imaged onto the detector 123 by the erecting unit 119.
- the depth of field 129 is thus determined by the predetermined image field 121 and a depth of field 129b.
- the depth of field 129 shown here is to be understood as the three-dimensional area within which the predetermined image field 121 of the real intermediate image 115 should be in order to obtain tolerable image data (not shown) with the detector 123.
- tolerable image data can either be achieved directly by the erecting unit 119 in that a maximally tolerable circle of confusion of the mapped predetermined image field is achieved on the detector, which allows a sharp image with a given pixel size, or indirectly through an image of the erecting unit 119 and downstream post-processing steps for the recorded data, in which the system's own characteristics are taken into account in order to optimize the recorded image data.
- PSF point spread function
- the righting unit 119 is shown schematically with a front lens 139.
- a classic arrangement 119a of the erecting unit 119 that is to say in an arrangement from the prior art, an optical axis 131 of the erecting unit 119 is oriented generally perpendicular to the real intermediate image 115.
- the front lens 139 and the corresponding optical axis 131 are shown in dashed lines in the classic arrangement 119a and 131a, whereas the optical axis 133 of the detection arrangement 103 is shown in dash-dotted lines.
- the focal plane 125 of the erecting unit 119 is tilted by an offset angle 127 to the real intermediate image 115.
- the offset angle 127 is shown in the enlarged area 129a.
- the predetermined image field 121 of the real intermediate image 115 to be imaged by the erecting unit 119 is located completely within the depth of field 129.
- the erecting unit 119 according to the invention is thus in a tilted arrangement or in the positioning 119b according to the invention.
- This tilted arrangement 119b can be assumed by the erecting unit 119, since up to this arrangement 119b, i.e. up to the offset angle 127, the real intermediate image 115 is arranged diagonally in the depth of field 119.
- the optical axis 131 of the erecting unit 119 is tilted towards the optical axis 133 of the detection arrangement 103.
- the erecting unit 119 is arranged at a working distance 141 from the real intermediate image 115. This is shown for the erecting unit 119 in the tilted arrangement 119b.
- a detection light cone 105a on the sample side is shown schematically in FIG. 1.
- This sample-side detection light cone 105a is shown dotted on the sample side 111a and can be defined, for example, by the first detection optics 103c. Since the first detection optics 103c can also be immersion optics 135, the detection light cone 105a on the sample side can be enlarged within certain limits.
- This sample-side detection light cone 105a consequently determines the maximum amount of scattered and / or fluorescent light 105 that can be detected, i.e. collected, by the detection arrangement 103. This is determined, for example, by a numerical aperture NA of the detection arrangement 103.
- FIG. 2 shows the area of the real intermediate image 115 in a detailed illustration, which schematically shows a separate circular section of the front lens 139 and the depth of field area 129. Due to the need to tilt the erecting unit 119 relative to the optical axis 133 of the detection arrangement 103, the erecting unit 119 only allows scattered and / or fluorescent light 105 to be collected from a second detection light cone 219c. This results from the intersection between the detection light cone 205a of the detection arrangement 103 on the image side and a (theoretical) light cone 219d of the erecting unit 119.
- the theoretical light cone 219d of the erecting unit 119 is shown with a dashed line, the image-side detection light cone 205a with a dotted line and the resulting second detection light cone 219c as a hatched area.
- the offset angle 127 ie by tilting the erecting unit 119 to the optical axis 133 of the detection arrangement 103
- the second detection light cone 219c and thus the amount of scattered and / or fluorescent light 105 incident on the detector 123 are increased.
- the straightening unit (not shown) is in the positioning 119b according to the invention.
- the offset angle 127 largely determines which portion of the scattered and / or fluorescent light 105 is located in the second detection light cone 219c and can be available for detection. 3, 4 and 5, solutions according to the invention are shown, which allow an enlargement of the depth of field 129, which in turn allows an enlargement of the offset angle 127. These solutions thus make it possible to tilt the erecting unit 119 more towards the optical axis 133 of the detection arrangement 103, as a result of which a greater light yield can be achieved and a signal-to-noise ratio can be improved.
- a further embodiment of the erecting unit 119 according to the invention is shown.
- this includes two filters 343, both filters 343 being able to be pupil filters 345.
- One of the filters 343 is a phase mask 347, while the other filter 343 is an amplitude mask 349.
- the filters 343 modify a beam path 351 of the scattered and / or fluorescent light 105, so that a modified beam path 353 results.
- This is shown schematically, purely by way of example and not restrictively, both after the phase mask 347 and after the amplitude mask 349.
- further optical elements 355 are indicated in a hatched area, which image the scattered and / or fluorescent light 105 on the detector 123.
- the phase mask 347 can be used to generate beam courses of the scattered and / or fluorescent light 105 that have a PSF that are bosom-shaped or airy-shaped.
- the PSF can be described by a Bessel function or an Airy profile.
- the phase mask 347 has a linear (Bessel) or a cubic (Airy) profile of the phase change as a function of a location coordinate. This change in the beam courses results in an enlarged depth of field 129, which in turn enables the possible offset angle 127 to be enlarged.
- FIG. 3 is shown in FIG. 3, which is shown as a representative of an evaluation device 359.
- a microcontroller or, for example, an integrated circuit can also be used.
- the PC 357 is designed by means of post-processing modules 361 from Detector 123 to process recorded image data 363 and, for example, to unfold the recorded images with a modified PSF and / or to optimize them by means of computational clearing and / or to process the image data in such a way that each newly calculated image represents a plane which is perpendicular to the optical axis 133 of the detection arrangement 103 is oriented.
- each image obtained represents a plane which is oriented perpendicular to the optical axis 133 of the detection arrangement 103 enables these images obtained to be intuitively understandable, since they show a plane in the sample 111b that is not inclined.
- FIG. 4 shows a further embodiment of the erecting unit 119 according to the invention, which comprises a microlens array 465. Due to the numerical aperture NA of each of the individual microlenses 465a, the microlens array 465 has an enlarged depth of field 129 (see FIG individual point of the real intermediate image 115 is only indicated schematically. Furthermore, in the embodiment of the erecting unit 119 shown in FIG. 4, the filters 343 of FIG. 3 can also be used. Conversely, in the embodiment according to FIG. 3, microlenses 465a can also be used as phase mask 347.
- FIG. 5 A further embodiment of the sliding plane microscope 101 according to the invention is shown schematically here.
- the inclined plane microscope 101 comprises an erecting unit 119, which is designed as a telescope 104.
- Fig. 5 two possible arrangements of the telescope 104 are shown, these possible positions of the telescope 104 and the resulting beam paths 351 can be distinguished by the used lines, solid or dashed.
- the two lenses 103a are arranged in such a way that the front lens 139 is at the working distance 141 to the real intermediate image 115 is located.
- This working distance 141 corresponds to a free working distance 142.
- the free working distance 142 defines the working distance 141 for which the telescope 104 is optimized, that is, an image with a working distance 141 corresponding to the free working distance 142 can take place with the smallest possible optical errors .
- An image with a different working distance 141 increases the spherical aberrations occurring in the image.
- the spherical aberrations are used to increase the depth of field 129. Any artifacts that may arise as a result can be compensated for or at least reduced by means of post-processing.
- an actual working distance 541a is selected as the working distance 141, which is greater than the free working distance 142, the increased spherical aberrations of the telescope 104 in such a changed position 569 increase the depth of field 129b and thus an enlarged depth of field results 129. This in turn allows a greater tilting of the erecting unit 119 in the changed position 569 towards the optical axis 133 of the detection arrangement 103.
- the free working distance 142 in the calculated optimal position 567 corresponds to a focal length 571 (also: f) of the front lens 139.
- the actual working distance 541a in the changed position 569 of the erecting unit 119 is greater than the focal length 571 of the front lens 139.
- the beam path 351 cannot run in a collimated manner between the lenses 103a shown in FIG. Even in such a case, ie such an arrangement, according to the invention, deviations can be made from the (calculated and optimal) working distance 141 of the erecting unit 119 to the real intermediate image 115, the actual working distance 541a being greater than the free working distance 142 of the erecting unit 119, however is not necessarily greater than the focal length 571 of the front lens 139.
- an erecting unit according to the invention can be designed in such a way that imaging errors such as vignetting and color errors (chromatic aberrations) are largely corrected for the actual working distance 541a, but spherical aberrations occur.
- Fig. 6 parts of the inclined plane microscope 101 according to the invention are shown schematically Darge to explain the steps for increasing the collection efficiency of the erecting unit 119.
- FIG. 6 only the second detection optics 103d of the detection arrangement 103 and only the front lens 139 of the erecting unit 119 are indicated schematically.
- the erecting unit 119 is shown both in the classic arrangement 119a and in the tilted arrangement 119b. In the classic arrangement 119a, the detection arrangement 103 and the erecting unit 119 can touch in a collision area 673.
- such a collision of the two components 103, 119 is avoided by tilting the erecting unit 119 towards the optical axis 133 of the detection arrangement 103.
- Such a tilted arrangement 119b is drawn with a solid line to distinguish it.
- FIG. 6 a further possibility is shown in FIG. 6 to further increase the light yield. This is made possible by the choice of a front lens 139 with a second numerical aperture NA2, which can be used in this larger form, since the tilting increases a clearance between the detection arrangement 103 and the erecting unit 119.
- the respective second detection light cone 219c is thus enlarged from that for the classic arrangement 119a, which is marked with a capital letter A for the sake of clarity, to the second detection light cone 219c, which is achieved for the tilted arrangement 119b, which is marked with a capital letter B, the latter being able to be enlarged even further by an enlarged numerical aperture NA2 of the front lens 139 or the erecting unit 119;
- the cone of light A is included in B and A and B are included in the cone of light C.
- a further possibility of increasing the numerical aperture NA of the erecting unit 119 can consist in introducing an immersion medium 675 between the detection arrangement 103 and the erecting unit 119, which has a refractive index 677 that is greater than the refractive index 677 of air.
- This can be a liquid such as an oil, for example.
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- Microscoopes, Condenser (AREA)
Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020204615.8A DE102020204615A1 (de) | 2020-04-09 | 2020-04-09 | Schiefeebenemikroskop mit verbesserter Sammeleffizienz |
| PCT/EP2021/059204 WO2021204956A1 (de) | 2020-04-09 | 2021-04-08 | Schiefeebenemikroskop mit verbesserter sammeleffizienz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4133322A1 true EP4133322A1 (de) | 2023-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21718825.9A Pending EP4133322A1 (de) | 2020-04-09 | 2021-04-08 | Schiefeebenemikroskop mit verbesserter sammeleffizienz |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12596242B2 (de) |
| EP (1) | EP4133322A1 (de) |
| DE (1) | DE102020204615A1 (de) |
| WO (1) | WO2021204956A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20250050881A (ko) * | 2022-07-28 | 2025-04-15 | 오스트레일리언 내셔널 유니버시티 | 부피 이미징을 위한 계산 현미경 방법 및 시스템 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8059336B2 (en) | 2007-05-04 | 2011-11-15 | Aperio Technologies, Inc. | Rapid microscope scanner for volume image acquisition |
| JP6086366B2 (ja) * | 2013-04-05 | 2017-03-01 | 国立研究開発法人理化学研究所 | 顕微鏡、焦準器具、流体保持器具、及び光学ユニット |
| US10061111B2 (en) | 2014-01-17 | 2018-08-28 | The Trustees Of Columbia University In The City Of New York | Systems and methods for three dimensional imaging |
| DE102014102215A1 (de) | 2014-02-20 | 2015-08-20 | Carl Zeiss Microscopy Gmbh | Verfahren und Anordnung zur Lichtblattmikroskopie |
| JP6914241B2 (ja) * | 2015-07-17 | 2021-08-04 | ザ トラスティース オブ コロンビア ユニバーシティ イン ザ シティ オブ ニューヨーク | 3次元イメージングのためのシステムおよび方法 |
| US11243391B2 (en) | 2016-05-30 | 2022-02-08 | The Trustees Of Columbia University In The City Of New York | Three-dimensional imaging using swept confocally aligned planar excitation with asymmetrical magnification |
| LU93225B1 (de) * | 2016-09-16 | 2018-03-19 | Leica Microsystems | Verfahren zur Erzeugung von Vorschaubildern mit einem Schiefeebenenmikroskop sowie Schiefeebenemikroskop und Bilderzeugungsvorrichtung für ein Schiefeebenemikroskop |
| DE102016119268B3 (de) | 2016-10-10 | 2017-12-21 | Leica Microsystems Cms Gmbh | Schiefebenenmikroskop |
| ES2820228T3 (es) | 2018-03-29 | 2021-04-20 | Leica Microsystems | Aparato y método, en particular para microscopios y endoscopios, que utilizan estimación de línea de base y minimización semi-cuadrática para eliminar la borrosidad de imágenes |
-
2020
- 2020-04-09 DE DE102020204615.8A patent/DE102020204615A1/de not_active Withdrawn
-
2021
- 2021-04-08 US US17/917,003 patent/US12596242B2/en active Active
- 2021-04-08 EP EP21718825.9A patent/EP4133322A1/de active Pending
- 2021-04-08 WO PCT/EP2021/059204 patent/WO2021204956A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US12596242B2 (en) | 2026-04-07 |
| WO2021204956A1 (de) | 2021-10-14 |
| DE102020204615A1 (de) | 2021-10-14 |
| US20230185068A1 (en) | 2023-06-15 |
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