GB681430A - Improvements in reflecting microscopes - Google Patents

Improvements in reflecting microscopes

Info

Publication number
GB681430A
GB681430A GB1359249A GB1359249A GB681430A GB 681430 A GB681430 A GB 681430A GB 1359249 A GB1359249 A GB 1359249A GB 1359249 A GB1359249 A GB 1359249A GB 681430 A GB681430 A GB 681430A
Authority
GB
United Kingdom
Prior art keywords
mirror
mirrors
aperture
larger
common focus
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
GB1359249A
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.)
ROBERT LIONEL DREW
Original Assignee
ROBERT LIONEL DREW
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 ROBERT LIONEL DREW filed Critical ROBERT LIONEL DREW
Priority to GB1359249A priority Critical patent/GB681430A/en
Publication of GB681430A publication Critical patent/GB681430A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/02—Objectives
    • G02B21/04—Objectives involving mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
    • G02B17/0605—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using two curved mirrors
    • G02B17/061—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror 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
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0852—Catadioptric systems having a field corrector only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0018—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for preventing ghost images

Landscapes

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

Abstract

681,430. Microscope objectives. DREW, R. L. May 9,1950 [May 20, 1949], No. 13592/49. Class 97 (i). A microscope objective comprises a concave spherical mirror and a larger concave non- spherical mirror, the two mirrors are arranged coaxially and face-to-face and the larger mirror is provided with a central aperture for the passage of light and the reflecting surface thereof is such that adjacent points on the base curve from which it is generated lie on different coaxial ellipses having one common focus and whose other foci lie progressively nearer to said common focus as the aperture is increased, the mirrors combining to give a strictly aplanatic image of an object located at said common focus. The larger mirror may be ellipsoidal so that the image formed by the mirrors of an object located between the foci of the ellipsoid is sub. stantially aplanatic. The spherical mirror R<SP>1</SP> and the aspherical mirror P may be formed by coatings as of aluminium on a transparent block 18; this block may be in one piece or formed of two or more pieces in optical contact. This block is formed with spherical entry and exit surfaces 19, 20 centred on the object V and image respectively. A normal incidence oil component 21, 22 is also used. The small mirror may also have a central aperture in which case part of each aperture has located therein an opaque stop to prevent sky flooding.
GB1359249A 1949-05-20 1949-05-20 Improvements in reflecting microscopes Expired GB681430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1359249A GB681430A (en) 1949-05-20 1949-05-20 Improvements in reflecting microscopes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1359249A GB681430A (en) 1949-05-20 1949-05-20 Improvements in reflecting microscopes

Publications (1)

Publication Number Publication Date
GB681430A true GB681430A (en) 1952-10-22

Family

ID=10025780

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1359249A Expired GB681430A (en) 1949-05-20 1949-05-20 Improvements in reflecting microscopes

Country Status (1)

Country Link
GB (1) GB681430A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108254853A (en) * 2018-01-17 2018-07-06 宁波舜宇仪器有限公司 A kind of micro imaging system and its real-time focusing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108254853A (en) * 2018-01-17 2018-07-06 宁波舜宇仪器有限公司 A kind of micro imaging system and its real-time focusing method
CN108254853B (en) * 2018-01-17 2023-08-11 宁波舜宇仪器有限公司 Microscopic imaging system and real-time focusing method thereof

Similar Documents

Publication Publication Date Title
US4124798A (en) Optical viewing apparatus
GB544694A (en) Improvements in photographic objectives
US2478762A (en) Reflecting microscope
US1484853A (en) Projection lens
GB681430A (en) Improvements in reflecting microscopes
US3311441A (en) Reflector
GB221764A (en) Improvements in or relating to reflecting condensers for dark field illumination
GB350323A (en) Improvements in or relating to optical objectives
US2284567A (en) Lens for optical purposes
US1580751A (en) Lens system
US1167991A (en) Illuminating means for telescope cross-hairs.
GB530506A (en) Improvements in or connected with eye-pieces for optical instruments
GB415342A (en) Improvements in illuminating devices for microscopes
GB862734A (en) A prism combination for altering the light path through a camera-microscope
GB426539A (en) Improvements in or relating to photographic reflecting lens objectives
GB228354A (en) Improvements in magnifying lenses
SU60130A1 (en) The method of determining the quality of the shape of the surface of the front lens microscopic
SU382046A1 (en) MENICA TELE OBJECT
SU40859A1 (en) High aperture lens for microscopes
GB934650A (en) Improvements in or relating to illuminating assemblies for cinematograph and slide projectors
GB346406A (en) Process for the production of cinematographic effects in colour and means therefor
SU720396A1 (en) Reflex lens
GB389773A (en) Improvements in telescopes for observing strong sources of light
GB348202A (en) An improved illuminating device for microscopes
GB433945A (en) Improvements in optical systems for television and the like