WO2011107401A1 - Probenhalterung für ein mikroskop - Google Patents
Probenhalterung für ein mikroskop Download PDFInfo
- Publication number
- WO2011107401A1 WO2011107401A1 PCT/EP2011/052797 EP2011052797W WO2011107401A1 WO 2011107401 A1 WO2011107401 A1 WO 2011107401A1 EP 2011052797 W EP2011052797 W EP 2011052797W WO 2011107401 A1 WO2011107401 A1 WO 2011107401A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sample
- holder
- lens
- carrier
- sample table
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/24—Base structure
- G02B21/26—Stages; Adjusting means therefor
Definitions
- the invention relates to a sample holder according to the preamble of claim 1 and of claim 7.
- the new method has in common that the structures to be imaged are prepared with markers which have two distinguishable states, namely a "bright” state and a "dark” state.
- markers which have two distinguishable states, namely a "bright” state and a "dark” state.
- the bright state is a state capable of fluorescence and the dark state is a non-fluorescent state.
- the active subset is to be chosen such that the mean distance between adjacent markers in the bright state is greater than the resolution limit of the imaging optical system.
- the luminance signals of the active subset are imaged onto a spatially resolving light detector, eg a CCD camera. Each marker thus detects a light spot whose size is determined by the resolution limit of the imaging optical system.
- the focal points of the light spots which represent the markers in the bright state, are then determined in each raw data single image.
- the focal points of the light spots determined from the raw data individual images are then compiled in an overall representation.
- the highly resolved image resulting from this overall representation reflects the distribution of the markers.
- a sufficient number of signals must be detected.
- the number of markers in the respective active subset is limited by the minimum average distance that two markers in the bright state may have from each other, a large number of raw data frames must be taken in order to fully depict the structure.
- the number of raw dactants 1 b i 1 d ern is in a range of 10,000 to 100,000.
- the time required for the acquisition of a raw data frame is limited downwards by the maximum rate of biosuppression of the imaging detector. This leads to comparatively long total recording times for one for the overall presentation required series of raw data frames. So the total recording time can be up to several hours.
- Lubricants used in the mechanical components is caused.
- the microscope of Figure 1 has a U-shaped stand 2, on the legs of a sample holder 4 is attached.
- the sample holder 4 comprises a sample table 6 and a holder 8 arranged on the sample table 6, to which a sample carrier (not shown in greater detail in FIG. 1) is attached with a sample.
- Below the sample stage 6 there is an objective turret 10 with a plurality of objectives 12 which can optionally be pivoted into an imaging beam path which passes through a passage hole 14 formed in the sample table 6. Via an eyepiece 16, the imaged sample can be viewed.
- a detector eg a CCD camera can be connected.
- the holder 8, together with the sample carrier attached to it on the sample stage 6, can be laterally, i. be moved perpendicular to the imaging beam path.
- a mechanical adjusting device 20 is provided, which is shown purely schematically in FIG.
- the adjusting device 20 is usually not formed as drift-stable, as is required for the recording of the above-described high-resolution overall image in the localization microscopy. Occurs in the actuator 20 to a mechanical drift. so this is transmitted to the holder 8, which eventually leads to a lateral Relativbcwegung between the sample and arranged in the imaging beam path lens 12 and thus to a Dri t of composite to the overall image raw data frames.
- Such an image drift of the raw data individual images is also caused by the attachment of the objective turret 10 to the U-shaped stand 2.
- the image-drift-related distance between the imaging lens 12 and the sample 8 arranged on the holder is comparatively large, since the sample on the sample holder 8, the sample table 6, the U-shaped tripod 2 and the nosepiece 10 with the lens 12 is coupled. Due to this comparatively large distance, the microscope according to FIG. 1 is prone to thermal instabilities and mechanical stresses, which as it were sum up over the distance. Also, the relatively complicated mechanism of the nosepiece 10 is drift prone.
- the object of the invention is to provide a sample holder for a microscope, which is sufficiently drift-stable even in long-term operation.
- the invention solves this problem by the characterizing part of claim 1 and of claim 7.
- the sample holder according to claim 1 provides an endoscope that uncouples the sample carrier located in the target position when imaging the sample through the objective from the holder.
- This decoupling of holder and sample carrier prevents a mechanical drift, which occurs in the actuating device acting on the holder, from being transferred to the sample carrier and thus to the sample itself when the sample is being imaged.
- the sample carrier is as it were free when imaging the sample, i. he remains unencumbered by the drift-prone actuator, which serves to move the sample carrier together with the holder in a target position to image the sample through the lens.
- the specimen holder which is therefore intended to be used is therefore advantageously usable in particular in the localization microscopy mentioned at the outset, which is naturally particularly susceptible to mechanical drifting.
- the sample holder according to the invention is also suitable for other applications. in which it is important to minimize the influence of a mechanical drift in the sample holder on the quality of the sample image.
- the decoupling device comprises at least one holding element, which is part of the holder and in the process of the holder on the sample carrier is released and released from the sample carrier during imaging of the sample through the objective.
- the decoupling device in the form of the holding element is integrated as it were in the holder.
- the holding element has two functions, namely on the one hand to position the sample carrier during the procedure of the holder in a stable position on the holder, and on the other to decouple the sample carrier and the holder when imaging the sample from each other.
- the holding element is, for example, a laterally abutted against the sample carrier, Drainenkbarer parallel to the sample table arm.
- the holding element can also be a laterally adjoining the sample carrier, displaceable perpendicular to the sample table pin.
- the holder preferably comprises a frame arranged above the sample carrier on which the pin or the pins are displaceably mounted.
- the actuator moves the holder away from the decoupled sample carrier located in the target position.
- a mechanical drift is transmitted from the adjusting device via the holder to the sample carrier.
- the alternative solution according to claim 7 provides a pressure device which presses the sample carrier coupled to the holder and arranged in the target position during the imaging of the sample through the objective against the sample table.
- the force exerted by the pressure device on the sample carrier pressure force is to be dimensioned so that it holds the sample carrier lages labile in the target position, even if drift forces act as a result of occurring in the actuator mechanical drift on the holder on the sample carrier.
- the pressure device comprises at least two magnetically interacting elements, one of which is arranged on the sample carrier and the other on the sample table.
- one of the elements is ferromagnetic, while the other is a permanent magnet or electromagnet.
- a pressure device that presses the sample carrier with a spring or a clip on the sample table is arranged in the sample carrier.
- the sample holder has a lens holder attached to the sample table to which the lens can be attached.
- the lens holder is preferably part of a positioning device that serves to focus the lens on the sample.
- the positioning device may, for example, form a substantially L-shaped arrangement comprising a first leg attached to the sample table and arranged parallel to the optical axis of the lens, and a second leg slidably mounted on the first leg to which the objective is mounted. Due to the L-shaped design of the positioning device, it is possible to bring the first leg of the arrangement as close as possible to the optical axis of the lens and so keep chandriftrelevante distance between the lens and the sample short.
- a guide device is provided, by means of which the objective holder can be moved on the sample table. leads and so from a working area in which the lens holder holds the lens in a A bbi 1 dun gsslrahl engan g, is removable bar.
- working area is meant in this context that area usually lying below the sample table, which is penetrated by the imaging beam path and in which the objective is focused on the sample, thus making it possible to use either a conventional objective nosepiece or ⁇ - For particularly high demands on the imaging accuracy - to work with the objective holder according to the invention.
- the guide device has a guide groove formed on the underside of the sample table and a carriage guided therein, which is coupled to the first leg of the positioning device.
- the positioning device can thus be removed from the work area in a particularly uniform manner along the sample table.
- the carriage is designed in one piece with the first leg of the positioning device.
- an elongate recess is formed on the underside of the sample table, in which the objective is movable out of the working area when the objective holder is removed.
- This embodiment is provided for the case in which the objective is located within a through hole passing through the sample table, to which the sample carrier is superimposed. In this case, it is not necessary to first move the lens out of this through hole to remove the lens holder from the work area. Rather, the lens can be easily transversely to the imaging beam path in the recess are moved. This allows a particularly compact design.
- the positioning device forms a rotationally symmetrical about the optical axis of the lens assembly, which comprises a attached to the sample table ring part whose central axis coincides with the optical axis of the lens, and a slidably mounted on the ring member circular plate on which the lens is mounted centrally.
- This rotationally symmetrical structure reduces adverse effects caused by drifting of the mechanical components transversely to the imaging beam path.
- the positioning device is a piezoelectrically driven device. As such, it is comparatively less prone to drift from the outset.
- a shield surrounding the arrangement of lens holder and lens is provided, for example, to protect against drafts.
- a shield can also be provided for the sample itself in order to protect them from draft.
- a microscope is provided in particular for use in localization microscopy, which is equipped with the above-described Probenhai sion.
- Figure 1 is a conventional inverse microscope
- Figure 2 is a perspective view of a sample holder according to the invention according to a first embodiment
- FIG. 3 shows a side view of the sample holder according to the first exemplary embodiment
- Figure 4 is a plan view of the sample holder according to the first embodiment
- FIG. 5 shows a side view of a sample holder according to the invention in accordance with a second embodiment
- Figure 6 is a plan view of the sample holder according to the second embodiment
- Figure 7 is a side view of a sample holder according to the invention according to a third embodiment
- Figure 8 is a plan view of the sample holder according to the third embodiment.
- Figure 9 is a side view of a sample holder according to the invention according to a fourth embodiment.
- Figure 10 is a plan view of a sample holder according to the invention according to the fifth embodiment.
- FIGS. 2 to 4 each show parts of a sample holder for a microscope according to the first exemplary embodiment.
- the sample holder comprises a sample table 32 and a holder 34 mounted laterally movable on the sample table.
- the holder 34 serves to fix a sample carrier 36 on which a sample, not shown, can be arranged.
- the holder 34 has an approximately U-shaped frame 38 on which the sample carrier 36 rests.
- an arm 40 is pivotally mounted about an axis 42. If the arm 40 rests with its free end against the sample carrier 36, it presses this part of the frame 38 opposite it, whereby the sample carrier 36 is clamped to the holder 34.
- an adjusting device 44 shown purely schematically in FIG. 3, is provided.
- the holder 34 is simplified (without the sample carrier 36 and the pivot arm 40) shown.
- the adjusting device 44 engages the holder 34 (in particular on its frame 38) to move the holder 34 to a target position in which the sample arranged on the sample carrier 36 is arranged as desired in an imaging beam path passing through the optical axis of a Lens 46 (see FIG. 3) is fixed.
- the objective 46 is held on a positioning projection 48 which is L-shaped in the side view according to FIG. 3 and serves to focus the objective 46 on the sample.
- the lens 46 projects with its sample-facing end in a passage hole 50, which passes through the sample table 32.
- the positioning device 48 has a mounted on the sample table 32, parallel to the optical axis of the lens 46 arranged first leg 52 and a displaceably mounted on the first leg 52 second Leg 54, on which the lens 46 is mounted and which is perpendicular to the optical axis of the lens 46.
- the second leg 54 can be moved along the first leg 52 via a piezoelectric drive, not shown, to focus the objective 46 on the sample.
- the adjusting device 44 moves the holder 34, together with the sample carrier 36 fastened to it, into a desired target position.
- the arm 40 presses the sample carrier 36 against the frame 38, whereby the sample carrier 36 is fixedly positioned in the holder 34.
- the arm 40 is pivoted laterally about the axis 42 parallel to the sample table 32 (to the left in FIG. 2), thereby releasing it from the sample carrier 36.
- the actuator 44 moves the holder 34 slightly away from the sample carrier 36.
- the arm 40 forms both a part of the holder 34 and a decoupling device, which serves to decouple the sample carrier 36 from the holder 34 as soon as the sample carrier 36 has reached its target position. in which the sample is to be imaged.
- a decoupling device which serves to decouple the sample carrier 36 from the holder 34 as soon as the sample carrier 36 has reached its target position. in which the sample is to be imaged.
- the lens 46 to the L-shaped Po itini ervorr direction 48, as is apparent from Figures 3 and 4.
- the image-drift-related distance between the objective 46 and the sample to be imaged is shorter due to the L-shaped mounting of the objective 46 on the sample stage 32 than in the conventional structure shown in FIG. 1, in which this distance is essentially determined by the U-shaped stand 2 is set.
- the first leg 52 of the positioning device 48 mounted on the sample table 32 can be arranged comparatively close to the optical axis of the objective 46, so that the arrangement formed by the objective 46 and the positioning device 48 has a
- FIGS. 5 and 6 a modified form from FIGS. 3 and 4 is shown as a second embodiment.
- FIG. 5 shows a rope view
- FIG. 6 shows a plan view.
- the positioning device 48 is slidably mounted on the sample table 32.
- the sample table 32 on its underside a guide groove 56 in which a carriage 58 is slidably guided.
- the carriage 58 is formed integrally with the sample-facing end of the first leg 52 in this embodiment.
- an elongate recess 60 is formed on the underside of the sample table 32, which adjoins the through-hole 50 passing through the sample table 32.
- a fastening screw 62 is provided, which is screwed from above into the sample table 32 in order to fix the carriage 58 in the guide groove 56.
- FIG. 7 shows a side view
- FIG. 8 shows a plan view
- the position indicator 48 has a ring member 64 attached to the sample table 32 and a circular plate 66 slidably disposed on the ring member 64.
- the lens 46 is mounted centrally on the plate 66.
- the central axis of the ring member 64 coincides with the optical axis of the lens 46.
- the arrangement formed by the objective 46 and the positioning device 48 is thus rotationally symmetrical about the optical axis of the objective 46. This arrangement ensures that drift movements of the mechanical components of the arrangement transverse to the optical axis caused, for example, by thermal effects or mechanical stresses will largely cancel.
- a further modified embodiment is shown as a fourth embodiment.
- This embodiment differs from the exemplary embodiment shown in FIG. 2 by another embodiment of the holder 34.
- the holder 34 according to FIG. 9 has a vertical distance from the top of the sample table 32.
- a modified embodiment is shown as a fifth embodiment. While in the exemplary embodiments shown in FIGS. 2 to 9 the sample carrier 36 is decoupled from the holder 36 during imaging of the sample (indicated at 74 in FIG. 10), the embodiment according to FIG. 10 provides a pressure device which holds the sample carrier 36 during imaging of the sample carrier Sample 74 presses against the sample table 32.
- the pressure device is formed in this embodiment by two arranged on the sample carrier 36 permanent magnets 76 and two arranged on the sample table 32 ierromagnetician areas which are associated with the permanent magnet 76.
- the sample holder 36 Due to the magnetic interaction between the permanent magnets 7 and their respective assigned lerromagneti Service areas is ensured that the sample holder 36 is pressed so hard on the sample table 32, that a transmission occurring in the actuator 44 mechanical drift on the holder 34 on the sample carrier 36 is avoided.
- the premagnets on the sample carrier 36 and their associated electromagnetic regions are arranged on the sample table 32 in such a way that the intended magnetic interaction is possible in order to fix the sample carrier 36 in its target position without image drift is.
- the permanent magnets 76 can also be arranged on the sample table 32 and the ferromagnetic regions on the sample carrier 36. Also, the permanent magnets 76 can be replaced by electromagnets.
- the latter can be turned on and off in a defined manner by the precision control, not shown, in order to achieve the desired effect.
- the precision control not shown, in order to achieve the desired effect.
- FIGS. 2 to 10 can be meaningfully combined with one another.
- both the embodiments shown in FIGS. 2 and 8, which are directed to the decoupling of the sample carrier 36, and the embodiment, which is directed to the fixing of the sample carrier 36, shown in FIG. 10 are identical with the embodiments according to FIGS FIGS. 3 to 8 can be combined.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/582,061 US8970952B2 (en) | 2010-03-01 | 2011-02-25 | Sample holder for a microscope |
JP2012555369A JP5728504B2 (ja) | 2010-03-01 | 2011-02-25 | 顕微鏡のための試料保持器 |
CN201180011960.2A CN102822719B (zh) | 2010-03-01 | 2011-02-25 | 用于显微镜的样品定位器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010009679.2 | 2010-03-01 | ||
DE102010009679.2A DE102010009679B4 (de) | 2010-03-01 | 2010-03-01 | Probenhalterung für ein Mikroskop und Mikroskop |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011107401A1 true WO2011107401A1 (de) | 2011-09-09 |
Family
ID=43901513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/052797 WO2011107401A1 (de) | 2010-03-01 | 2011-02-25 | Probenhalterung für ein mikroskop |
Country Status (5)
Country | Link |
---|---|
US (1) | US8970952B2 (de) |
JP (1) | JP5728504B2 (de) |
CN (1) | CN102822719B (de) |
DE (1) | DE102010009679B4 (de) |
WO (1) | WO2011107401A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US20140223612A1 (en) * | 2013-02-05 | 2014-08-07 | Asylum Corporation | Modular Atomic Force Microscope |
WO2014160061A2 (en) * | 2013-03-13 | 2014-10-02 | Protochips, Inc. | A device for imaging electron microscope environmental sample supports in a microfluidic or electrochemical chamber with an optical microscope |
WO2018062215A1 (ja) * | 2016-09-30 | 2018-04-05 | オリンパス株式会社 | 観察装置 |
WO2018220670A1 (ja) | 2017-05-29 | 2018-12-06 | オリンパス株式会社 | 観察装置 |
CN110646629A (zh) * | 2018-06-27 | 2020-01-03 | 中国科学院苏州纳米技术与纳米仿生研究所 | 一种样品托 |
WO2023166655A1 (ja) * | 2022-03-03 | 2023-09-07 | オリンパス株式会社 | 照明ユニットおよび撮影システム |
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Also Published As
Publication number | Publication date |
---|---|
US8970952B2 (en) | 2015-03-03 |
CN102822719A (zh) | 2012-12-12 |
US20130033744A1 (en) | 2013-02-07 |
JP5728504B2 (ja) | 2015-06-03 |
DE102010009679A1 (de) | 2012-03-08 |
DE102010009679B4 (de) | 2020-03-05 |
JP2013521522A (ja) | 2013-06-10 |
CN102822719B (zh) | 2015-03-04 |
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