GB996676A - Improvements in microscopes - Google Patents

Improvements in microscopes

Info

Publication number
GB996676A
GB996676A GB1796263A GB1796263A GB996676A GB 996676 A GB996676 A GB 996676A GB 1796263 A GB1796263 A GB 1796263A GB 1796263 A GB1796263 A GB 1796263A GB 996676 A GB996676 A GB 996676A
Authority
GB
United Kingdom
Prior art keywords
iii
cemented
radius
eyepiece
objective
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
GB1796263A
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.)
MEOPTA PRAHA
Original Assignee
MEOPTA PRAHA
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 MEOPTA PRAHA filed Critical MEOPTA PRAHA
Publication of GB996676A publication Critical patent/GB996676A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/02—Objectives
    • G02B21/025—Objectives with variable magnification

Landscapes

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

Abstract

996, 676. Microscopes; optical systems. MEOPTA PRAHA NARODNI PODNIK. May 7, 1963 [Dec. 11,1962], No. 17962/63. Heading G2J. A microscope has disposed between the objective OB and the eyepiece OK a variable focal length system comprising a fixed positive member I, a movable negative member II and a movable positive member III. The distance between the plane A of the objective contact shoulder and the eyepiece object plane B is referred to as the reduced tube length t r and the focal lengths f<SP>1</SP> I , f<SP>1</SP> II , f<SP>1</SP> III of members I, II, III are such that Preferably each member is a cemented doublet with the cemented surface of II concave towards I and the radius of curvature of its first refracting surface r 4 lying between -0. 6 and -1. 2 times that of its rear surface r 6 . Member III has its cemented surface r 8 convex towards II and its radius of curvature smaller then that of the front surface r 7 of member III and its two component lenses have refractive indices differing by at least 0.18 with the rearward lens having the lower index. Optical data are given for one example.
GB1796263A 1962-12-11 1963-05-07 Improvements in microscopes Expired GB996676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS695862 1962-12-11

Publications (1)

Publication Number Publication Date
GB996676A true GB996676A (en) 1965-06-30

Family

ID=5417800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1796263A Expired GB996676A (en) 1962-12-11 1963-05-07 Improvements in microscopes

Country Status (2)

Country Link
AT (1) AT239569B (en)
GB (1) GB996676A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017111423A (en) * 2015-12-17 2017-06-22 カール ツァイス マイクロスコピー ゲーエムベーハーＣａｒｌ Ｚｅｉｓｓ Ｍｉｃｒｏｓｃｏｐｙ Ｇｍｂｈ Zoom objective lens
US20190113730A1 (en) * 2017-10-16 2019-04-18 Olympus Corporation Observation apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3202075A1 (en) * 1982-01-23 1983-08-04 Fa. Carl Zeiss, 7920 Heidenheim SYSTEM VARIABLE CUTTING AND FOCAL LENGTH

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017111423A (en) * 2015-12-17 2017-06-22 カール ツァイス マイクロスコピー ゲーエムベーハーＣａｒｌ Ｚｅｉｓｓ Ｍｉｃｒｏｓｃｏｐｙ Ｇｍｂｈ Zoom objective lens
US20190113730A1 (en) * 2017-10-16 2019-04-18 Olympus Corporation Observation apparatus

Also Published As

Publication number Publication date
AT239569B (en) 1965-04-12

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