WO2004051341A1 - Rastermikroskop mit konfokalem spaltscanner zum abbilden eines objektes - Google Patents
Rastermikroskop mit konfokalem spaltscanner zum abbilden eines objektes Download PDFInfo
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- WO2004051341A1 WO2004051341A1 PCT/DE2003/003163 DE0303163W WO2004051341A1 WO 2004051341 A1 WO2004051341 A1 WO 2004051341A1 DE 0303163 W DE0303163 W DE 0303163W WO 2004051341 A1 WO2004051341 A1 WO 2004051341A1
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- scanning microscope
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- 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
- G02B21/0004—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
- G02B21/008—Details of detection or image processing, including general computer control
- G02B21/0084—Details of detection or image processing, including general computer control time-scale detection, e.g. strobed, ultra-fast, heterodyne detection
Definitions
- the present invention relates to a scanning microscope for imaging an object, with a light source, an almost infinitely variably adjustable spectrally selective element, an almost infinitely variable spectrally selective detection device, an illumination beam path running from the light source to the object, a detection beam path running from the object to the detection device , with the spectrally selective element light of the light source for object illumination being selectable, with the spectrally selective element reflecting and / or scattering selected light from the light source from the detection beam path being faded out, with at least one wavelength range of the light running in the detection beam path with the spectrally selective detection device is detectable.
- Scanning microscopes in the sense of the present invention are understood to mean microscopes in which the object to be imaged is scanned with an illumination pattern. This raster process is usually meandering, so that the object is scanned with the illumination pattern in a manner similar to how, for example, an electron beam is directed onto the screen of a Braun tube.
- the inflexible coloring or interference filters arranged in front of the detectors of conventional confocal scanning microscopes are direction for the selection and detection of at least two spectral ranges of a light beam replaced.
- the light beam is first spectrally broken down with a prism, an optical grating or a hologram.
- a spectral split light is then used to select a first spectral range with the aid of movably arranged mirror diaphragms and to detect it with a first detector.
- An optical arrangement is known from DE 199 06 757 A1 with which the dichroic or multichroitic beam splitters of a confocal scanning microscope can be replaced.
- light of the laser light source is selected for at least one wavelength for object illumination and the light of the laser light source reflected and / or scattered on the object is masked out of the detection beam path.
- a controllable active optical component is used as the spectrally selective element, which is designed, for example, in the form of an AOTF (Acousto-Optical-Tunable-Filter) or an AOD (Acousto-Optical-Deflector).
- the light beam used to illuminate the object has a residence time that is too short per scanned object point. Accordingly, the signal-to-noise ratio of the detected object point is usually too low, if not unusable.
- physiological applications in particular there is a great need to examine living samples.
- rapid movement processes take place, which can only be sensibly detected if the detected images of the object can be taken correspondingly quickly.
- Such a high detection speed usually also results in an insufficient signal-to-noise ratio of the detected image data.
- the present invention is therefore based on the object of specifying and developing a scanning microscope of the generic type such that an object can also be detected at a high raster speed with an improved signal-to-noise ratio.
- a parallelization of the scanning process with the scanning microscope results in a longer dwell time of the illuminating light beam on the object and thus the detection of each object point is possible over a longer period of time. This in turn results in an increased signal-to-noise ratio of the light coming from the object and detected by the detection device.
- a parallelization of the object detection is provided by designing the illumination beam path and the detection beam path in the sense of a confocal gap scanner.
- the almost infinitely variably adjustable spectrally selective element as well as the almost infinitely variably adjustable detection device is used in conventional scanning microscopes only as a confocal scanning microscope in the sense of a point scanner. This means that the object is scanned in a point-like manner and the spectrally selective element and the spectrally selective detection device act on a point-shaped light beam.
- both the spectrally selective element and the detection device can also act in a comparable manner on a linear light beam, so that a scanning microscope in the sense of a confocal slit scanner can also be realized with these components.
- a confocal slit scanner In a confocal slit scanner, the object is illuminated with a linear illumination pattern in the focal plane of the microscope objective of the scanning microscope. A special configuration of the detection beam path then only detects the light coming from the object, which comes from the linearly illuminated object area, for example from the focal plane of the microscope objective.
- a confocal slit scanner has a confocality in the direction transverse to the linear object lighting. In the direction of the linear object there is almost no confocality. By scanning the object in lines or cells, however, a longer illumination and detection time is achieved for the same frame rate per object point compared to the line-by-point scanning of the object. As a result, weakly fluorescent or living samples with an improved signal-to-noise ratio can also be detected in a particularly advantageous manner.
- an illumination slit is provided in the illumination beam path.
- the illumination slit diaphragm is preferably arranged in a plane corresponding to the focal plane of a microscope objective, so that the illumination slit diaphragm is imaged in the focal plane of the microscope objective of the scanning microscope on the illumination side and thus generates a linear illumination pattern in the object area.
- this line-shaped illumination pattern can be moved relative to the object, for example with a pivotable mirror arranged in the illumination beam path, namely by tilting the illumination beam path in a suitable manner about a pivot point that lies in the entrance pupil of the microscope objective.
- Detection in the sense of a confocal slit scanner could be achieved in that a detection slit diaphragm is provided in the detection beam path.
- the detection slit diaphragm is preferably arranged in a plane in the detection beam path that corresponds to the focal plane of the microscope objective.
- the microscope objective maps the object arranged in its focal plane with the additional optics, which may be arranged in the detection beam path between the microscope objective and the detection slit diaphragm, onto the plane in which the detection slit plane is arranged.
- the detection slit plane is arranged in the plane corresponding to the focal plane of the microscope objective in such a way that only the light coming from the object can pass through the detection slit aperture, which comes from the linear illumination area from the focal plane of the microscope objective.
- the length of the linear illumination pattern will have to be shortened accordingly.
- the width of the linear illumination pattern could have to be varied, which ultimately changes the resolution of the scanning microscopic image across the linear illumination pattern.
- the gap length and / or the gap width of the illumination slit diaphragm and / or the detection slit diaphragm can be variably adjusted.
- a variation of the slit length and slit width preferably takes place independently of one another, ie with a certain slit length only the slit width of the illuminating slit diaphragm and / or the detection slit diaphragm can be variably adjusted. Confocal imaging is always ensured if both the illumination slit and the detection slit are changed in the same way with a variation of the slit length and / or the slit width.
- the illumination slit diaphragm and / or the detection slit diaphragm could comprise diaphragms arranged movably.
- diaphragms arranged movably.
- an arrangement of four rectangular diaphragms is conceivable, each of which can be moved or shifted in one direction, preferably motor-controlled.
- two of the diaphragms, each with one side or edge of a diaphragm could be arranged lying parallel to one another in a plane, the illuminating or detection light then being able to pass between the two sides or edges of the diaphragm, ie the gap being formed in one direction is.
- the two other diaphragms could be oriented with one side or edge of one diaphragm oriented perpendicularly thereto and arranged essentially in the same plane, so that the two other diaphragms delimit the gap along the direction perpendicular to it.
- Such an arrangement of four diaphragms enables the gap length to be varied independently of a variation in the gap width of the illumination slit diaphragm and / or the detection slit diaphragm.
- a variation of the slit length and / or the slit width could also be brought about by a vario-optics assigned to the illuminating slit diaphragm and / or the detection slit diaphragm.
- the vario optics is here in the lighting or Detection beam path arranged that the effective slit width and / or the effective slit length of the corresponding slit diaphragm can be changed.
- it could be a zoom optic that changes the overall magnification of the illuminating or detection beam path from the respective aperture to the object.
- a vario-optic can be used as a fully configured module in the corresponding beam path, so that mechanical adjustment of individual diaphragm parts is advantageously not required.
- the spectrally selective element comprises a controllable active optical component. As a result, it can be variably adjusted almost infinitely, assuming appropriate control.
- all of the embodiments of a spectrally selective element disclosed in DE 199 06 757 A1 can be used in the scanning microscope according to the present invention, so that the disclosure content of DE 199 06 757 A1 is expressly included here and is therefore assumed to be known.
- two AOTF crystals are provided as the spectrally selective element, one of which forms the active optical component, to which a corresponding ultrasonic wave is applied.
- the other AOTF crystal is arranged as an optically inactive component after the first AOTF crystal in the detection beam path, namely it is arranged in such a way that it reverses a spectral decomposition of the luminescent light coming from the luminescent object as well as a splitting of the different polarization directions by the first AOTF crystal ,
- the second AOTF crystal is arranged rotated by 180 degrees with respect to the longitudinal axis of the first AOTF crystal.
- the second AOTF crystal is also subjected to an ultrasound wave. In the arrangement, the crystal serves to further suppress the residual light that was not effectively reflected by the first AOTF crystal.
- the spectrally selective detection device comprises means for spectrally decomposing the light running in the detection beam path.
- This means is preferably designed in the form of a prism. Alternatively, a grid or a hologram could be provided.
- the spectrally selective detection device comprises means which on the one hand have a first detector for selecting a spectral range for detection and on the other hand have means for reflecting at least part of the non-selected spectral range for detection with a second detector.
- the light running in the detection beam path thus passes through First, the means for spectral decomposition, for example in the form of a prism, and then - spectrally decomposed or spatially fanned out - meets the means for selecting a first spectral range.
- the part of the spectrally split light that strikes the means for reflecting at least a part of the unselected spectral range is reflected to a second detector.
- the spectrally selective detection device could thus be designed in accordance with the embodiments known from DE 43 30 347 A1 and DE 199 02 625 A1. In this respect, the disclosure content of these German patent applications is expressly included here and is also assumed to be known in this respect.
- the means for selecting the first spectral range or the means for reflecting at least a part of the non-selected spectral range are implemented by displaceably arranged diaphragms, slit diaphragms and / or mirror diaphragms, whereby a shift or mechanical adjustment can take place at least almost continuously, there is almost infinitely variable spectrally selective detection device.
- the detection device has a flat-shaped or a linen-shaped detector.
- This detector has a spatial resolution corresponding to its area or line shape.
- the sheet-like or line-shaped detector can be used to detect the detection light that passes through the detection slit and is spectrally split and selected at once.
- the location information of the scanned object is detected in one direction - parallel to the long side of the detection slit diaphragm.
- the spectral component of the detection light which was spatially fanned out by the means for spectral decomposition, is detected perpendicular to this for each object point imaged.
- the detector could comprise a CCD element, which in the form of a CCD array or CCD chip - i.e. a flat CCD element - or a line photomultiplier or a CCD line - i.e. a line-shaped CCD element - or be designed as a CMOS element in combination with an image intensifier.
- a CCD element which in the form of a CCD array or CCD chip - i.e. a flat CCD element - or a line photomultiplier or a CCD line - i.e. a line-shaped CCD element - or be designed as a CMOS element in combination with an image intensifier.
- an adaptation lens could be arranged in the detection beam path in front of a detector of the detection device. This could be a lens or a lens arrangement which brings about an enlargement or reduction or a further image.
- the adaptation optics are preferably designed to be variable, for example in the form of a zoom optics. In this way,
- a means for combining the light which generates an essentially line-shaped or focused light beam, is arranged in the detection beam path in front of a detector of the detection device.
- the means for combining the light at least largely reverses the spectral decomposition or spatial fanning out of the means for spectral decomposition of the spectrally selective detection device or at least focuses the spectrally fanned light onto a line that can be detected by the line-shaped detector.
- the means for bringing the light together could comprise a lens, a prism, a grating or a hologram. If the means for bringing the light together comprises a lens, the spatially fanned out light beam is focused only on one line, the spectral decomposition is in any case not completely reversed with a lens alone. With a correspondingly arranged prism, grating or optical module, which has a hologram, spectral decomposition of the means for spectrally decomposing the detection device could, however, be almost completely reversed, so that the spectrally fanned light beam by the means for combining the light into a linear one Light beam is transferred, which can then be detected by the line-shaped detector.
- the detector of the detection device could have a readout rate which is in the ⁇ s or ns range.
- Line or line detectors that have corresponding readout rates are known from the prior art and are used in particular in the above-mentioned applications, in the temporal resolution of the decay behavior of luminescent preparations and in gas injection experiments in explosion chambers.
- the detector of the detection device could have an activation unit that enables the detector to be activated and deactivated over time.
- an activation unit is implemented in the case of CCD arrays or CCD chips or CMOS amplifiers with readout rates in the ns range by means of a time gate circuit which enables the detector to be detected in a predefinable time window.
- the scanning microscope is designed in the sense of a multi-photon microscope. Accordingly, the object or a marker used for object marking can be excited and detected using the methods of multi-photon excitation.
- a suitable light source is to be provided, for example a laser light source emitting a pulsed light in the near infrared range. A titanium sapphire laser is usually used for this.
- the spectrally selective element and the spectrally selective detection device are to be set such that, for example, two-photon fluorescence excitation with light of the wavelength from a wavelength range of 720 to 1000 nm and detection of the fluorescence light excited thereby takes place in a range from 400 to 600 nm .
- the pulse duration of the light emitted by the titanium sapphire laser is preferably in the ps range.
- other non-linear effects can also be generated and detected in the sample, e.g. the generation of higher harmonics, for example second or third harmony generation, or CARS (Coherent Anti-Stokes Raman Scattering).
- FIG. 1 shows a schematic illustration of a first exemplary embodiment of a scanning microscope according to the invention for imaging an object
- FIG. 2 shows a schematic illustration of a second exemplary embodiment of a scanning microscope according to the invention in a perspective view
- FIG. 3 shows a schematic illustration of a detail from the exemplary embodiment from FIG. 2 in a perspective view
- FIG. 4 shows a schematic illustration of part of a detection device of a further exemplary embodiment
- FIG. 5 shows a schematic illustration of an embodiment of a spectrally selective element known from the prior art
- Fig. 6 is a schematic representation of an embodiment of a spectrally selective element according to the present invention in a perspective view.
- the scanning microscope comprises a laser light source 2, which is used to illuminate the object 1.
- the illuminating beam path 3 extends from the laser light source 2 to the object 1.
- the scanning microscope further comprises an almost infinitely variably adjustable spectrally selective detection device 4 which detects at least one wavelength range of the light running in the detection beam path 5.
- the detection beam path 5 runs from the object 1 to the detectors 6 and 7.
- the spectrally selective element 8 selects light from the laser light source 2 for object illumination by reflecting light of a specific wavelength to the scanning device 9.
- the non-selected light of the laser light source 2 - for example of different wavelengths - passes through the spectrally selective element 8 and is in the Beam trap 10 absorbed.
- the selected light of the laser light source 2 reflected and / or scattered on the object 1 is likewise masked out by the spectrally selective element 8 from the detection beam path 5, specifically deflected in the direction of the laser light source 2.
- the illumination beam path 3 and the detection beam path 5 are designed in the sense of a confocal slit scanner. This can be seen particularly clearly from the perspective illustration of the exemplary embodiment shown in FIG. 2.
- the light beam emitted by the laser light source 2 is converted by the lens 12 into a linear light beam, which at least for the most part passes through the illumination slit diaphragm 11. 1 only shows the optical axis of the linear beam path, the illuminating beam path 3 and the detection beam path 5 have a linear cross section which is arranged perpendicular to the plane of the drawing.
- a detection slit diaphragm 13 is provided in the detection beam path 5, which is arranged on the one hand corresponding to the focal plane 14 of the microscope objective 15 and on the other hand corresponding to the illumination slit diaphragm 11.
- Both the gap length and the gap width of the detection slit diaphragm 13 can be variably adjusted, which is indicated in FIGS. 2 and 3.
- the detection slit diaphragm 13 in this case comprises four movably arranged diaphragms 16 to 19. In each case one side or edge of the diaphragms 16 to 19 form the gap of the detection slit diaphragm 13.
- the diaphragms 16 and 17 can be displaced along the directions indicated by the double arrows 20.
- the panels 18 and 19 can be displaced along the directions indicated by the double arrows 21.
- the slit width of the detection slit 13 can thus be varied with the orifices 18 and 19.
- the slit length of the detection slit 13 can be varied with the orifices 16 and 17.
- the zoom lens 22 is designed in the form of a zoom lens arrangement which varies the overall magnification factor of the illumination beam path 3 - together with the microscope objective 15 - and thus produces a larger or smaller image of the illumination slit aperture 11 in the focal plane 14 of the microscope objective 15 ,
- the spectrally selective detection device 4 shown in FIGS. 1 to 4 comprises a means 23 for spectrally splitting the light running in the detection beam path 5.
- the means 23 is designed in the form of a prism.
- the detection device 4 shown in FIGS. 1 and 4 comprises means 24 and 40 for selecting a first spectral range 25.
- the light from the first spectral range 25 coming from the object 1 and selected by means 24 and 40 is detected by the detector 6.
- the means 24 is a displaceably arranged diaphragm which can be moved by the motor 26 along the direction of the double arrow shown in the means 24.
- the means 40 is a displaceably arranged mirror diaphragm which can be moved by the motor 27 along the direction of the double arrow shown in the means 40.
- the light reflected at the means 40 is the spectral portion of the light spectrally split by the means 23, which comes from the object 1 and which is not selected for the first detector 6. This light at least for the most part passes through the means 28 for selecting the reflected spectral range and is detected by the detector 7.
- the lens 29 shown in FIGS. 1 and 4 collimates or focuses the light spectrally split by the means 23 onto the plane in which the means 24 and 40 for selecting the first spectral range 25 are arranged.
- the detection device 4 has a flat detector 6.
- the flat detector 6 has a spatial resolution corresponding to its surface shape.
- the flat detector 6 is designed in the form of a CCD array or a CCD chip.
- a part of the detection device 4 is shown enlarged in FIG. 3.
- the spectral information of each detected object point is imaged on the detector 6 along the direction 31.
- there are lenses and other optical means necessary for guiding and shaping the light are omitted from the figures.
- the detector 6 shown in FIGS. 2 and 3, designed as a CCD array, has a readout speed of 100 images per second. With an object image size of 512 x 512 pixels, the detector 6 512 times can be read out for an entire object image recording. This results in a total exposure time of an object image of approx. 5 seconds.
- the raster speed of the scanning device 9 is synchronized with the readout speed of the detector 6 or adapted to it. Thus, both the location information and the spectral information of each pixel are present as the object representation of an object 1 that has been scanned once, given the image size of 512 ⁇ 512 pixels mentioned above.
- FIG. 4 shows a further exemplary embodiment of a detection device 4, in which between the means 24, 40 for selecting a first spectral range 25 and the detector 32, a means 33 for combining the light, the means 24, 40 for selecting the first spectral range 25 happens is arranged.
- the means 33 for combining the light is designed in the form of a prism and generates a linear light beam which is detected by the detector 32 designed as a CCD line.
- a means 33 for combining the light running there is provided, so that the means 33 for combining the light likewise produces a linear light beam which is in the form of the light a line-shaped detector 34 formed on a CCD line.
- the selected light from the laser light source 2 reflected and / or scattered on the object 1 passes through the first AOTF crystal 36 in the opposite direction, then - bent into the 1st order - hits the mirror 35, which reflects and / or scattered the light coming from the object Light reflected to the laser light source 2.
- the fluorescent light coming from the object 1 passes through the first AOTF crystal 36 in the 0th order and passes the mirror 35 towards the second AOTF crystal 37.
- the AOTF crystal 37 is rotated by 180 degrees about the schematically indicated - optical - axis 38 arranged.
- the second AOTF crystal 37 reverses spectral decomposition of the first AOTF crystal 36 of the fluorescent light and polarization splitting.
- the two mirrors 39 only serve to bring the light that has passed through the AOTF crystals 36, 37 back coaxially to the optical axis 38.
- FIG. 6 shows a perspective illustration of the functioning of the spectrally selective element 8 in the confocal scanning microscope according to the invention, which operates in the sense of a confocal slit scanner.
- a light beam with a linear cross section comes from the laser light source 2, which is reflected by the mirror 35 to the first AOTF crystal 36.
- the further functioning of the spectrally selective element 8 shown in FIG. 6 essentially corresponds to that of the spectrally selective element 8 shown in FIG. 5, both the part of the illuminating beam path 3 shown in FIG. 6 and the part of the detection beam path 5 shown there in each case has a linear cross section.
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/537,335 US7477380B2 (en) | 2002-12-05 | 2003-09-23 | Scanning microscope comprising a confocal slit scanner for imaging an object |
EP03770874A EP1606665A1 (de) | 2002-12-05 | 2003-09-23 | Rastermikroskop mit konfokalem spaltscanner zum abbilden eines objektes |
AU2003280287A AU2003280287A1 (en) | 2002-12-05 | 2003-09-23 | Scanning microscope comprising a confocal slit scanner for reproducing an object |
JP2004555992A JP4116622B2 (ja) | 2002-12-05 | 2003-09-23 | 共焦点スリットスキャナを備える、対象物を結像するための走査型顕微鏡 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10257120.1A DE10257120B4 (de) | 2002-12-05 | 2002-12-05 | Rastermikroskop zum Abbilden eines Objekts |
DE10257120.1 | 2002-12-05 |
Publications (1)
Publication Number | Publication Date |
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WO2004051341A1 true WO2004051341A1 (de) | 2004-06-17 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/DE2003/003163 WO2004051341A1 (de) | 2002-12-05 | 2003-09-23 | Rastermikroskop mit konfokalem spaltscanner zum abbilden eines objektes |
Country Status (6)
Country | Link |
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US (1) | US7477380B2 (de) |
EP (1) | EP1606665A1 (de) |
JP (1) | JP4116622B2 (de) |
AU (1) | AU2003280287A1 (de) |
DE (1) | DE10257120B4 (de) |
WO (1) | WO2004051341A1 (de) |
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JP2006039116A (ja) * | 2004-07-26 | 2006-02-09 | Olympus Corp | レーザ走査顕微鏡および分光データ取得プログラム |
JP2006258990A (ja) * | 2005-03-15 | 2006-09-28 | Osaka Industrial Promotion Organization | 光学顕微鏡 |
US20100049055A1 (en) * | 2005-05-31 | 2010-02-25 | W.O.M. World Of Medicine Ag | Method and apparatus for visual characterization of tissue |
WO2007028725A1 (de) * | 2005-09-09 | 2007-03-15 | Leica Microsystems Cms Gmbh | Konfokalmikroskop und verfahren zur detektion mit einem konfokalmikroskop |
JP2007132794A (ja) * | 2005-11-10 | 2007-05-31 | Olympus Corp | 多光子励起型観察装置および多光子励起型観察用光源装置 |
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CN102749027A (zh) * | 2011-04-18 | 2012-10-24 | 陈亮嘉 | 线型彩色共焦显微系统 |
CN113686265A (zh) * | 2021-07-30 | 2021-11-23 | 哈尔滨工业大学 | 基于变形镜补偿的高稳定性纳弧度量级角度测量方法与装置 |
CN113686265B (zh) * | 2021-07-30 | 2022-11-01 | 哈尔滨工业大学 | 基于变形镜补偿的高稳定性纳弧度量级角度测量方法与装置 |
Also Published As
Publication number | Publication date |
---|---|
DE10257120B4 (de) | 2020-01-16 |
JP4116622B2 (ja) | 2008-07-09 |
JP2006510926A (ja) | 2006-03-30 |
EP1606665A1 (de) | 2005-12-21 |
AU2003280287A1 (en) | 2004-06-23 |
DE10257120A1 (de) | 2004-07-08 |
US20060152787A1 (en) | 2006-07-13 |
US7477380B2 (en) | 2009-01-13 |
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