US3472726A - Heatable stage for a microscope - Google Patents

Heatable stage for a microscope Download PDF

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Publication number
US3472726A
US3472726A US711106A US3472726DA US3472726A US 3472726 A US3472726 A US 3472726A US 711106 A US711106 A US 711106A US 3472726D A US3472726D A US 3472726DA US 3472726 A US3472726 A US 3472726A
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US
United States
Prior art keywords
specimen
microscope
furnace
inner housing
housing
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 - Lifetime
Application number
US711106A
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English (en)
Inventor
Rene Scheidegger
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.)
Mettler Instrumente AG
Original Assignee
Mettler Instrumente AG
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 Mettler Instrumente AG filed Critical Mettler Instrumente AG
Application granted granted Critical
Publication of US3472726A publication Critical patent/US3472726A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/24—Base structure
    • G02B21/30—Base structure with heating device

Definitions

  • Stages for microscopic examination under heat comprise a furnace containing a chamber, into which the specimen to be examined is usually inserted by means of specimen holders.
  • the furnace itself is generally accommodated inside a housing which may be fixed on the table of a microscope. Apertures are provided in the furnace and in the housing to enable the specimen to be illuminated and observed.
  • Apparatus for carrying out the usual therrnomicroscopic examinations often required in the laboratory therefore usually comprises, apart from the microscope, a large number of heatable stages of different construction and serving different purposes.
  • the primary object of the present invention is to provide a heatable stage for thermomicroscopic examinations which may be employed for most of the examinations conventionally carried out in a laboratory, in which the behavior of a specimenunder heat is studied under a microscope.
  • This is achieved, in accordance with the present 3,472,726 Patented Oct. 14, 1969 invention, by providing in a heatable stage for a microscope, an outer housing arranged to be mounted on a microscope table, an inner housing mounted within said outer housing with a cavity between the outer and inner housing, a furnace mounted within said inner housing and containing a chamber for the specimen to be examined, said outer and inner housing and said furnace having apertures for illuminating and observing said specimen, and means to pass a cooling airstream through said cavity during examination of said specimen.
  • the heatable stage in the position of use the heatable stage is fixed as usual onto the microscope table 1, which is shown only partially in the drawing and contains an aperture 2 for illumination. A fragment of the objective 3 is also illustrated but otherwise no further parts of the microscope are included in the drawing.
  • the outer housing 4 of the heatable stage is preferably made of sheet metal and contains an inner housing 6, preferably also made of sheet metal, with a cavity 5 extending throughout between the housings 4 and 6.
  • the inner housing 6 is supported in the outer housing 4 by means of a plurality of metal props 7. These pass through the cavity 5 and establish a heat conductive connection between the inner housing 6 and the outer housing 4.
  • the inner housing 6 in turn encloses a furnace 8 which is separated therefrom on all sides and attached thereto in a heat insulating manner by means of a plurality of ceramic props 9.
  • the specimen chamber 10 of the furnace is inside the body of the latter, which is provided in the usual way with electrical heating elements (not shown) and an electrical temperature sensor.
  • the outer housing 4 has apertures 11 and 12
  • the inner housing 6 has coaxial apertures 13 and 14
  • the furnace 8 has corresponding apertures 15 and 16 which lead into the specimen chamber 10.
  • the apertures 13 and 14 are each covered with a glass disc 17 and 18 respectively, the discs 17 and 18 being fixed to the inner housing 6, and preferably being designed in known manner as heat protective filters.
  • the size of the aperture 11 is such that the objective 3 of the microscope can pass through it and enter the cavity 5.
  • the bottom aperture 12 is aligned with the illuminating aperture 2 of the microscope table 1.
  • the aperture 2 is itself covered by the optical illuminating means which are mounted below the table 1 but not illustrated in the drawmg.
  • a motor driven fan 19 is attached to the outer housing 4 to the left of the inner housing 6. Its blade 20 sucks up fresh air through the aperture 21 in the outer housing 4, forces it through the cavity 5 from left to right and ejects it through the outlet 22 provided at the right hand side of the outer housing 4. Hence the direction in which the air stream conveyed by the fan 19 passes through the cavity 5 is substantially at right angles to the direction in which the specimen in the chamber 10 is illuminated and observed through the apertures 11 to 1-6.
  • the inner housing 6 contains an insertion aperture 23 opening towards the outlet 22 in the outer housing 4.
  • An insertion aperture 24 for the specimen chamber 10 provided in the furnace 8 similarly opens towards the aperture 23 in the inner housing 6.
  • the end portion of the specimen holder 25, which carries the specimen to be examined and is usually made of glass, can accordingly be introduced into the chamber 10 through the outlet 22 of the outer housing 4, the aperture 23 in the inner housing 6 and the aperture 24 in the furnace 8.
  • a cross slide 26 of conventional construction is finally mounted on the outer housing 4 at the same side as the outlet 22, so that the end portion of the specimen holder 25 in the specimen chamber 10 can be slid as required in order to centre the specimen in the optical axis of the microscope.
  • the inner housing 6 thus has a cooling airstream permanently flowing around it, which continuously carries away the heat radiated into the housing 6 by the furnace 8. Undesirable accumulation of heat can accordingly occur neither in the furnace 8 nor within the inner housing 6, so any desired temperature for the specimen chamber 10 can be obtained very rapidly and accurately controlled.
  • the airstream conveyed through the cavity further provides an effective cooling action for the objective 3, which accordingly can be brought near the inner housing 6.
  • a final important point is that virtually the whole temperature gradient starting from the furnace 8 is concentrated in the space between the furnace 8 and the inner housing 6, which enables comparatively small dimensions to be used for the inner housing 6 in the direction in which the specimen is observed and illuminated.
  • the heatable stage described can be employed for most of the examinations conventionally carried out in a laboratory, in which the behaviour of a specimen under heat is studied under a microscope. Without any adjustments or alterations having to be made to the heatable stage and its associated control means it is possible, for example, to measure micro melting points, to ascertain eutectic temperatures, to obtain optical constants of melts by the glass powder method, to examine polymorphous substances, to carry out heat analysis by the contact method and to conduct microbiological examinations.
  • a heatable stage for a microscope including an outer housing arranged to be mounted on a microscope table, an inner housing mounted within said outer housing with a cavity between said outer and inner housings, a furnace mounted within said inner housing and containing a chamber for the specimen to be examined, said outer and inner housings and said furnace having apertures for illuminating and observing said specimen, and means to pass a cooling airstream through said cavity during examination of said specimen.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microscoopes, Condenser (AREA)
US711106A 1967-06-12 1968-03-06 Heatable stage for a microscope Expired - Lifetime US3472726A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH828367A CH451550A (de) 1967-06-12 1967-06-12 Heiztisch für thermo-mikroskopische Untersuchungen

Publications (1)

Publication Number Publication Date
US3472726A true US3472726A (en) 1969-10-14

Family

ID=4337940

Family Applications (1)

Application Number Title Priority Date Filing Date
US711106A Expired - Lifetime US3472726A (en) 1967-06-12 1968-03-06 Heatable stage for a microscope

Country Status (7)

Country Link
US (1) US3472726A (enrdf_load_stackoverflow)
AT (1) AT271051B (enrdf_load_stackoverflow)
CH (1) CH451550A (enrdf_load_stackoverflow)
DE (1) DE1284119B (enrdf_load_stackoverflow)
FR (1) FR1552901A (enrdf_load_stackoverflow)
GB (1) GB1164209A (enrdf_load_stackoverflow)
SE (1) SE322923B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577690A1 (fr) * 1985-02-21 1986-08-22 Centre Nat Rech Scient Surplatine pour etudes thermodynamiques sous microscope
US4629862A (en) * 1984-03-28 1986-12-16 Olympus Optical Company Ltd. Sample heater for use in microscopes
US5257128A (en) * 1988-06-22 1993-10-26 Board Of Regents, The University Of Texas System Freezing/perfusion microscope stage
US6233093B1 (en) * 1997-11-25 2001-05-15 The Goodyear Tire & Rubber Company Temperature control for microscopy
US20050248836A1 (en) * 2002-08-28 2005-11-10 Tokai Hit Co., Ltd Incubator for observation by microscope
US20240302252A1 (en) * 2022-02-16 2024-09-12 Curiosis Co., Ltd Stage assembly with vent structure for preventing condensation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057019B2 (ja) * 1980-02-18 1985-12-12 日本甜菜製糖株式会社 飽和温度測定用試料の調製方法
DE19749218A1 (de) * 1997-11-07 1999-05-20 Forschungszentrum Juelich Gmbh Hochtemperatur-Vakuumprobenhalter für Lichtmikroskope

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959090A (en) * 1958-06-16 1960-11-08 Orenda Engines Ltd Device for inspecting a body surrounded by, or composed of, hot gases
US3310356A (en) * 1963-02-08 1967-03-21 Gen Precision Inc Lens protective device utilizing dual air streams
US3361192A (en) * 1966-02-07 1968-01-02 Varo Inc Electrokinetics Div Temperature chamber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959090A (en) * 1958-06-16 1960-11-08 Orenda Engines Ltd Device for inspecting a body surrounded by, or composed of, hot gases
US3310356A (en) * 1963-02-08 1967-03-21 Gen Precision Inc Lens protective device utilizing dual air streams
US3361192A (en) * 1966-02-07 1968-01-02 Varo Inc Electrokinetics Div Temperature chamber

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629862A (en) * 1984-03-28 1986-12-16 Olympus Optical Company Ltd. Sample heater for use in microscopes
FR2577690A1 (fr) * 1985-02-21 1986-08-22 Centre Nat Rech Scient Surplatine pour etudes thermodynamiques sous microscope
US4707086A (en) * 1985-02-21 1987-11-17 Centre National De La Recherche Scientifique Stage assembly for thermodynamic study under a microscope
US5257128A (en) * 1988-06-22 1993-10-26 Board Of Regents, The University Of Texas System Freezing/perfusion microscope stage
US6233093B1 (en) * 1997-11-25 2001-05-15 The Goodyear Tire & Rubber Company Temperature control for microscopy
US20050248836A1 (en) * 2002-08-28 2005-11-10 Tokai Hit Co., Ltd Incubator for observation by microscope
US7718423B2 (en) * 2002-08-28 2010-05-18 Tokai Hit Co., Ltd. Incubator for observation by microscope
US20240302252A1 (en) * 2022-02-16 2024-09-12 Curiosis Co., Ltd Stage assembly with vent structure for preventing condensation

Also Published As

Publication number Publication date
SE322923B (enrdf_load_stackoverflow) 1970-04-20
DE1284119B (de) 1968-11-28
CH451550A (de) 1968-05-15
AT271051B (de) 1969-05-27
FR1552901A (enrdf_load_stackoverflow) 1969-01-10
GB1164209A (en) 1969-09-17

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