DE1005285B - Brightfield-darkfield lighting device, especially for microscopes - Google Patents

Brightfield-darkfield lighting device, especially for microscopes

Info

Publication number
DE1005285B
DE1005285B DESCH13241A DESC013241A DE1005285B DE 1005285 B DE1005285 B DE 1005285B DE SCH13241 A DESCH13241 A DE SCH13241A DE SC013241 A DESC013241 A DE SC013241A DE 1005285 B DE1005285 B DE 1005285B
Authority
DE
Germany
Prior art keywords
brightfield
microscopes
lighting device
polarization
condenser
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
Application number
DESCH13241A
Other languages
German (de)
Inventor
Ernst Scheller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DESCH13241A priority Critical patent/DE1005285B/en
Publication of DE1005285B publication Critical patent/DE1005285B/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/06—Means for illuminating specimens
    • G02B21/08—Condensers
    • G02B21/12—Condensers affording bright-field illumination
    • G02B21/125—Condensers affording bright-field illumination affording both dark- and bright-field illumination

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microscoopes, Condenser (AREA)

Description

Hellfeld-Dunkelfeld-Beleuchtungseinrichtung, insbesondere für Mikroskope Die Erfindung betrifft eine durch Polarisationsfilter einstellbare Hellfeld-Dunkelfeld-Beleuchtungseinrichtung, insbesondere für Mikroskope, und hat zur Aufgabe, eine solche Einrichtung derart zu gestalten, daß sie leicht mit dem Gerät, an dem sie verwendet werden soll, vereint werden kann.Brightfield / darkfield lighting device, in particular for microscopes The invention relates to a bright-field-dark-field lighting device that can be adjusted by means of polarization filters, especially for microscopes, and has the task of such a device to be designed so that it easily unites with the device on which it is to be used can be.

Dies wird erfindungsgemäß dadurch erreicht, daß nur zwei Polarisationsfelder von verschiedenenDurchmessern, aber gleichen Glasscheibendurchmessern vorgesehen sind, die vor dem Kondensor, gegebenenfalls an diesen ansetzbar, in einer gemeinsamen Fassung gegeneinander verdrehbar, konzentrisch zur Mikroskopachse angeordnet sind.This is achieved according to the invention in that only two polarization fields of different diameters but the same glass pane diameters are provided are that in front of the condenser, optionally attachable to this, in a common Version rotatable against each other, are arranged concentrically to the microscope axis.

Die Zeichnung gibt ein Ausführungsbeispiel des Erfindungsgegenstandes wieder.The drawing gives an embodiment of the subject matter of the invention again.

In Abb. 1 ist 1 ein Objektiv, 2 das zu betrachtende Objekt, 3 ein einfacher zweilinsiger Kondensor, 4 ein Polarisationsfilter vom Durchmesser D2, 5 ein Polarisationsfilter vom Durchmesser D1, 6 eine Fassung, in welche das Polarisationsfilter 4 drehbar und das Polarisationsfilter 5 fest gelagert ist. Beide Filter haben den gleichen Glassc'heibenaußendurchmesser D3. Mittels des Hebels 7 ist das Polarisationsfilter 4 in der Fassung 6 um 90° drehbar.In Fig. 1, 1 is an objective, 2 is the object to be viewed, and 3 is a simple two-lens condenser, 4 a polarization filter with a diameter of D2, 5 a polarization filter of diameter D1, 6 a socket in which the polarization filter 4 rotatable and the polarization filter 5 is fixedly mounted. Both filters have the the same outside diameter of the glass pane D3. By means of the lever 7 is the polarization filter 4 rotatable by 90 ° in the socket 6.

Befinden sich beide Polarisationsfilter 4 und 5, wie aus Abb. 2 ersichtlich, in Parallelstellung, so wird durch das einfallende Lic tstrahlenbüschel vom Durchmesser Dl, welches durch den Kondensor 3 nach dem Objekt 2 gelangt, eine Hellfeldbeleuchtung mit bekannter Wirkung erzielt.If both polarization filters 4 and 5 are located, as can be seen from Fig. 2, in a parallel position, the incident light beam bundle has a diameter Dl, which passes through the condenser 3 after the object 2, a bright field illumination achieved with known effect.

Befinden sich dagegen die beiden Polarisationsfilter nach Abb.3-in gekreuzter Stellung, dann wird ein ringförmiges Strahlenbüschel von den Durchmessern Dl, D2 durch den Kondensor 3 nach dem Objekt 2 geführt, wobei keine direkten Lichtstrahlen in das Objektiv eintreten können und somit eine Dunkelfeldbeleuchtung erzielt wird.If, on the other hand, the two polarization filters are located according to Fig.3-in crossed position, then an annular bundle of rays of diameters Dl, D2 guided through the condenser 3 to the object 2, with no direct light rays can enter the lens and thus a dark field illumination is achieved.

Diese Einrichtung hat den Vorteil, daß bei der Umschaltung von Hellfeld- auf Dunkelfeldbeleuchtung die verschiedenartige Wirkungsweise unmittelbar beobachtet werden kann.This device has the advantage that when switching from brightfield the various modes of action observed directly on dark-field lighting can be.

Claims (1)

PATENTANSPRUCH: Durch Polarisationsfilter einstellbare Hellfeld-Dunkelfeld-Beleuchtungseinrichtung, insbesondere für Mikroskope, dadurch gekennzeichnet, daß nur zwei Polarisationsfilter von verschiedenen Durchmessern, aber gleichen Glasscheibenaußendurchmessern vorgesehen sind, die vor dem Kondensor, gegebenenfalls an diesen ansetzbar, in einer gemeinsamen Fassung gegeneinander verdrehbar, konzentrisch zur Mikroskopachse angeordnet sind. In Betracht gezogene Druckschriften: Französische Patentschrift Nr. 948 408.PATENT CLAIM: Brightfield-darkfield illumination device adjustable by polarization filter, in particular for microscopes, characterized in that only two polarization filters of different diameters, but the same glass pane outside diameter are that in front of the condenser, optionally attachable to this, in a common Version rotatable against each other, are arranged concentrically to the microscope axis. Documents considered: French Patent No. 948 408.
DESCH13241A 1953-08-10 1953-08-10 Brightfield-darkfield lighting device, especially for microscopes Pending DE1005285B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH13241A DE1005285B (en) 1953-08-10 1953-08-10 Brightfield-darkfield lighting device, especially for microscopes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH13241A DE1005285B (en) 1953-08-10 1953-08-10 Brightfield-darkfield lighting device, especially for microscopes

Publications (1)

Publication Number Publication Date
DE1005285B true DE1005285B (en) 1957-03-28

Family

ID=7426960

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH13241A Pending DE1005285B (en) 1953-08-10 1953-08-10 Brightfield-darkfield lighting device, especially for microscopes

Country Status (1)

Country Link
DE (1) DE1005285B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648856A1 (en) * 1975-12-08 1977-06-16 American Optical Corp COLLECTING MICROSCOPE LENS

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR948408A (en) * 1947-06-06 1949-08-01 Centre Nat Rech Scient Method and devices for microscopic observation, in particular for the observation of ultra-microscopic structures

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR948408A (en) * 1947-06-06 1949-08-01 Centre Nat Rech Scient Method and devices for microscopic observation, in particular for the observation of ultra-microscopic structures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648856A1 (en) * 1975-12-08 1977-06-16 American Optical Corp COLLECTING MICROSCOPE LENS
DE2648856C2 (en) 1975-12-08 1985-10-03 Warner Lambert Technologies, Inc., Dallas, Tex. Two-lens microscope condenser

Similar Documents

Publication Publication Date Title
DE2542075A1 (en) LIGHTING DEVICE FOR LIGHT AND DARK FIELD ILLUMINATION
DE2944215C2 (en)
DE2051174C3 (en) Double microscope
DE2055944A1 (en) Fluorescent incident light illuminator
DE2165599A1 (en) Incident light dark field illuminator for a microscope
DE1005285B (en) Brightfield-darkfield lighting device, especially for microscopes
DE2021784B2 (en) LIGHTING DEVICE FOR REINFORCED LIGHT MICROSCOPES
AT100630B (en) Mirror condenser for dark field lighting.
DE3033758C2 (en)
DE569884C (en) Device for illuminating microscopic objects
DE603322C (en) Device for brightfield and darkfield illumination of microscopic objects
DE739599C (en) Device for illuminating microscopic objects
DE593227C (en) Dark field condenser for microscopes
DE603409C (en) Device for achieving different colored illumination of microscopic objects
AT212048B (en) Device for achieving high magnifications while avoiding entoptic and dioptric interference in optical devices
DE800253C (en) Device for practicing the phase contrast method for optical imaging
DE603323C (en) Lighting device for microscopes
AT163379B (en) microscope
DE529562C (en) Device for achieving different colored illumination of microscopic preparations
DE830840C (en) Microscope condenser for dark field lighting
AT146642B (en) Additional device for microscopes.
AT230122B (en) Universal condenser for microscopes
DE591070C (en) Objective nosepiece for microscopes
DE636165C (en) Dark field condenser for microscopes
AT126714B (en) Device for achieving different colored illumination of microscopic objects.