DE19604336B4 - Device for photostimulation with a microscope - Google Patents
Device for photostimulation with a microscope Download PDFInfo
- Publication number
- DE19604336B4 DE19604336B4 DE1996104336 DE19604336A DE19604336B4 DE 19604336 B4 DE19604336 B4 DE 19604336B4 DE 1996104336 DE1996104336 DE 1996104336 DE 19604336 A DE19604336 A DE 19604336A DE 19604336 B4 DE19604336 B4 DE 19604336B4
- Authority
- DE
- Germany
- Prior art keywords
- light
- microscope
- beam path
- illumination
- sample
- 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.)
- Expired - Fee Related
Links
- 238000005286 illumination Methods 0.000 claims abstract description 6
- 230000005284 excitation Effects 0.000 claims abstract description 5
- 210000001747 pupil Anatomy 0.000 claims abstract description 4
- 230000001537 neural effect Effects 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000004936 stimulating effect Effects 0.000 claims 1
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 3
- 229930195712 glutamate Natural products 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 210000002569 neuron Anatomy 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 241000700159 Rattus Species 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000000799 fluorescence microscopy Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010865 video microscopy Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/16—Microscopes adapted for ultraviolet illumination ; Fluorescence microscopes
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microscoopes, Condenser (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Mikroskop,
– mit einer Auflichtbeleuchtung zur Photostimulation einer zu untersuchenden Probe
– und einer Durchlichtbeleuchtung zur Beobachtung der angeregten Probe im Durchlicht,
dadurch gekennzeichnet, dass
– in eine Pupillenebene des Auflichtstrahlengangs eine Zentralblende eingebracht ist, die den Zentralbereich des Auflichtstrahlengangs ausblendet und damit das Anregungslicht hohlkegelartig in die Fokusebene fokussiert und Streulicht innerhalb des Beleuchtungshohlkegels vermindert.Microscope,
- With incident light for photostimulation of a sample to be examined
And transmitted light illumination for observing the excited sample in transmitted light,
characterized in that
- A central aperture is introduced into a pupil plane of the incident light beam path, which fades out the central region of the incident light beam path and thus focuses the excitation light like a hollow cone into the focus plane and reduces stray light within the hollow illumination cone.
Description
Das Infrarotmikroskop erlaubt die
Sichtbarmachung von Nervenzellen in vitalen Hirnschnitten von Ratten
unter dem Mikroskop. Wenn verestertes Glutamat in die Badlösung gegeben
wird, kann die Esterbindung durch UV-Beleuchtung lokal gespalten werden
und einzelne Nervenzellen werden so chemisch gereizt. Dies wird
erreicht (
Bei Beleuchtung größerer Flächen mit flächenhaften Lichtquellen kann dieses Prinzip auch zur Verbesserung der Tiefendis krimination in der Fluoreszenzmikroskopie eingesetzt werden, da Objekte außerhalb der Fokusebene kein Streulicht mehr abgeben.When illuminating larger areas with areal Light sources can also use this principle to improve depth discrimination be used in fluorescence microscopy since objects are outside no longer give off stray light at the focal plane.
Wird als Lichtquelle ein durchstimmbarer Farbstofflaser verwandt, so kann mit Licht verschiedener genau definierter Wellenlängen stimuliert werden. Wirksame Substanzen können mit verschiedenen chemischen Gruppen verestert werden, so dass die verschiedenen Esterbindungen mit spezifischen Wellenlängen selektiv aufgebrochen werden.Becomes a tunable dye laser as a light source related, can be stimulated with light of different precisely defined wavelengths become. Effective substances can are esterified with different chemical groups so that the different ester bonds with specific wavelengths selective be broken up.
Die vorliegende Erfindung bezieht sich auf eine Vorrichtung zur Photostimulation von neuronalem Gewebe mit einem Mikroskop.The present invention relates on a device for photostimulation of neuronal tissue with a microscope.
Stand der TechnikState of the art
Photostimulation von neuronalem Gewebe durch Spaltung von verestertem Glutamat mit ultraviolettem (UV-)Licht wurde beschrieben.Photostimulation of neuronal tissue by Cleavage of esterified glutamate with ultraviolet (UV) light has been described.
Darüber hinaus ist aus der Druckschrift
Die Druckschrift
Aus der Druckschrift
Nachteile des Standes der TechnikDisadvantages of the State of the art
Die Auflösung der Systeme in der Z-Achse war bisher sehr gering.The resolution of the systems in the Z axis was so far very little.
Die Aufgabe der vorliegenden Erfindung ist es, für die Anregung der zu untersuchenden Probe eine verbesserte Tiefendiskrimination zu gewährleisten.The object of the present invention is for the excitation of the sample to be examined an improved depth discrimination to ensure.
Vorteile der ErfindungAdvantages of invention
Die Erfindung erlaubt gezielte Photostimulation von Zellen, die mit dem Verfahren der Infrarotvideomikroskopie in dicken Objekten sichtbar gemacht wurden.The invention allows targeted photo stimulation of cells using the method of infrared video microscopy in thick objects have been made visible.
Die Aufgabe der Erfindung wird gelöst durch eine Vorrichtung gemäß Patentanspruch 1. Vorteilhafte Ausführungsformen sind in den Unteransprüchen gekennzeichnet.The object of the invention is achieved by a Device according to claim 1. Advantageous embodiments are in the subclaims characterized.
Die Erfindung nimmt Bezug auf die begleitenden Zeichnungen, in welchen The invention relates to accompanying drawings, in which
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996104336 DE19604336B4 (en) | 1996-02-07 | 1996-02-07 | Device for photostimulation with a microscope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996104336 DE19604336B4 (en) | 1996-02-07 | 1996-02-07 | Device for photostimulation with a microscope |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19604336A1 DE19604336A1 (en) | 1997-08-14 |
DE19604336B4 true DE19604336B4 (en) | 2004-02-26 |
Family
ID=7784692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1996104336 Expired - Fee Related DE19604336B4 (en) | 1996-02-07 | 1996-02-07 | Device for photostimulation with a microscope |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19604336B4 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4148552A (en) * | 1975-10-28 | 1979-04-10 | Nippon Kogaku K.K. | Microscope adaptable to various observing methods |
WO1994022001A1 (en) * | 1993-03-18 | 1994-09-29 | Harald Steen | An optical arrangement for flow cytometers |
DE19514358A1 (en) * | 1994-04-20 | 1996-02-01 | Dodt Hans Ulrich Dr | Contrast device for microscopy |
-
1996
- 1996-02-07 DE DE1996104336 patent/DE19604336B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4148552A (en) * | 1975-10-28 | 1979-04-10 | Nippon Kogaku K.K. | Microscope adaptable to various observing methods |
WO1994022001A1 (en) * | 1993-03-18 | 1994-09-29 | Harald Steen | An optical arrangement for flow cytometers |
DE19514358A1 (en) * | 1994-04-20 | 1996-02-01 | Dodt Hans Ulrich Dr | Contrast device for microscopy |
Also Published As
Publication number | Publication date |
---|---|
DE19604336A1 (en) | 1997-08-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ON | Later submitted papers | ||
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130903 |