GB680221A - Improvements relating to microscope objectives - Google Patents

Improvements relating to microscope objectives

Info

Publication number
GB680221A
GB680221A GB2084049A GB2084049A GB680221A GB 680221 A GB680221 A GB 680221A GB 2084049 A GB2084049 A GB 2084049A GB 2084049 A GB2084049 A GB 2084049A GB 680221 A GB680221 A GB 680221A
Authority
GB
United Kingdom
Prior art keywords
block
objective
concave
convex
spherical aberration
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
GB2084049A
Inventor
Charles Gorrie Wynne
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.)
WRAY OPTICAL WORKS Ltd
Original Assignee
WRAY OPTICAL WORKS Ltd
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 WRAY OPTICAL WORKS Ltd filed Critical WRAY OPTICAL WORKS Ltd
Priority to GB2084049A priority Critical patent/GB680221A/en
Publication of GB680221A publication Critical patent/GB680221A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G02B17/086—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors wherein the system is made of a single block of optical material, e.g. solid catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/02—Objectives
    • G02B21/04—Objectives involving mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Lenses (AREA)

Abstract

680,221. Microscope objectives. WRAY (OPTICAL WORKS), Ltd. Aug. 10, 1950 [Aug. 10, 1949], No. 20840/49. Class 97 (i). A microscope objective has a concave reflecting surface and a convex reflecting surface of smaller diameter, which obscures part of a central aperture in the concave surface, formed as two of the external surfaces of a transparent block, the radius of curvature of the convex surface being less than one-half of that of the concave surface so that spherical aberration for the required conjugate foci is at least in part corrected. The reflecting surfaces are prefer. ably spherical and substantially concentric and the light entry and exit surfaces of the block may have their centres in the object and image planes respectively. To give full correction of spherical aberration and coma, a convergent lens system, preferably a doublet, may be located on the long conjugate side of the block. In order to increase the working distance and reduce the obstruction of the concave mirror by the convex mirror, the objective has the form shown. This objective comprises a glass block 4 having substantially concentric concave and convex reflecting surfaces R<SP>1</SP>, R<SP>2</SP>, an entry surface R<SP>3</SP> centred in the object plane, and a lens B cemented to the block and having a surface R<SP>4</SP> correcting for coma and spherical aberration, in combination with a doublet C, D. The objective may comprise a block having cemented thereto a member of the same material, this member extending forwardly to the object plane so that immersion fluid may be used. To reduce diffraction effects caused by obstruction of the concave mirror aperture, the objective may incorporate a neutral tint filter whose transmission varies over its area. Optical data are given for two examples.
GB2084049A 1949-08-10 1949-08-10 Improvements relating to microscope objectives Expired GB680221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2084049A GB680221A (en) 1949-08-10 1949-08-10 Improvements relating to microscope objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2084049A GB680221A (en) 1949-08-10 1949-08-10 Improvements relating to microscope objectives

Publications (1)

Publication Number Publication Date
GB680221A true GB680221A (en) 1952-10-01

Family

ID=10152597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2084049A Expired GB680221A (en) 1949-08-10 1949-08-10 Improvements relating to microscope objectives

Country Status (1)

Country Link
GB (1) GB680221A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785604A (en) * 1953-10-28 1957-03-19 Optische Ind De Oude Delft Nv Microscope objective with two spherical reflecting surfaces
US2916966A (en) * 1955-06-03 1959-12-15 Centre Nat Rech Scient Catadioptric objectives
US5638219A (en) * 1994-06-30 1997-06-10 Medina Puerta; Antonio Ultracompact complex optical device
US9999350B2 (en) 2014-09-25 2018-06-19 Novartis Ag Reduced glare surgical microscope and associated devices, systems, and methods
EP4012473A1 (en) * 2020-12-14 2022-06-15 Nanolive SA Optical diffraction tomography microscope

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785604A (en) * 1953-10-28 1957-03-19 Optische Ind De Oude Delft Nv Microscope objective with two spherical reflecting surfaces
US2916966A (en) * 1955-06-03 1959-12-15 Centre Nat Rech Scient Catadioptric objectives
US5638219A (en) * 1994-06-30 1997-06-10 Medina Puerta; Antonio Ultracompact complex optical device
US9999350B2 (en) 2014-09-25 2018-06-19 Novartis Ag Reduced glare surgical microscope and associated devices, systems, and methods
EP4012473A1 (en) * 2020-12-14 2022-06-15 Nanolive SA Optical diffraction tomography microscope
WO2022128964A1 (en) * 2020-12-14 2022-06-23 Nanolive Sa Optical diffraction tomography microscope

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