GB386281A - Improvements in apparatus for illuminating microscopic objects - Google Patents

Improvements in apparatus for illuminating microscopic objects

Info

Publication number
GB386281A
GB386281A GB25971/32A GB2597132A GB386281A GB 386281 A GB386281 A GB 386281A GB 25971/32 A GB25971/32 A GB 25971/32A GB 2597132 A GB2597132 A GB 2597132A GB 386281 A GB386281 A GB 386281A
Authority
GB
United Kingdom
Prior art keywords
light
diaphragm
reflector
prism
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
Application number
GB25971/32A
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss 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 Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of GB386281A publication Critical patent/GB386281A/en
Expired 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
    • G02B21/082—Condensers for incident illumination only
    • G02B21/084—Condensers for incident illumination only having annular illumination around the objective

Landscapes

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

Abstract

386,281. Microscopes. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. Sept. 19, 1932, No. 25971. Convention date, Sept. 28, 1931. [Class 97 (i).] Apparatus for light-field and/or dark-field illumination of microscopic objects in incident light comprises a transparent reflector 7. for the light-field illumination and an annular reflector 6 in conjunction with an annular condenser 14 for the darkfield illumination, the reflectors 6, 7 being rigidly connected and having in front of them a diaphragm for determining the cross section of the incident rays. The reflectors are mounted in a housing 1 screwed to the microscope tube 5 and having a support 10 for the objective 11. A tube 12 screwed to the housing 1 carries the condenser 14 which surrounds the objective and has a paraboloidal reflecting surface 13. The partial reflector 7 is cemented to the annular reflector 6 and the reflecting surfaces are inclined at 45‹ to the axis of the microscope. The housing 1 has a light entrance aperture 2 in which a lens 15 is mounted, and behind this lens is a slot 16 to carry the appropriate diaphragm. In dark-field illumination only, the diaphragm used has an opaque central part surrounded by a transparent annulus, while the diaphragm for light-field illumination transmits light only over a small circular area at the centre of the lens. For light- and dark-field illumination together, no diaphragm is used. For use as an alternative to the reflector 7 for the lightfield illumination, a trapezoidal reflecting prism 26 may be provided, this prism being mounted on a rod 25 which can be inserted through the side of the housing. The diaphragm for use with this prism has a small central rectangular aperture corresponding to the entrance face of the prism, the remainder being opaque.
GB25971/32A 1931-09-28 1932-09-19 Improvements in apparatus for illuminating microscopic objects Expired GB386281A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE386281X 1931-09-28

Publications (1)

Publication Number Publication Date
GB386281A true GB386281A (en) 1933-01-12

Family

ID=6370963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25971/32A Expired GB386281A (en) 1931-09-28 1932-09-19 Improvements in apparatus for illuminating microscopic objects

Country Status (1)

Country Link
GB (1) GB386281A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459492A1 (en) * 1979-06-15 1981-01-09 Leitz Ernst Gmbh REFLECTED LIGHT PROJECTION DEVICE FOR LIGHTING LIGHT BACKGROUND AND BLACK BACKGROUND

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459492A1 (en) * 1979-06-15 1981-01-09 Leitz Ernst Gmbh REFLECTED LIGHT PROJECTION DEVICE FOR LIGHTING LIGHT BACKGROUND AND BLACK BACKGROUND

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