GB990405A - Improvements in and relating to microscopes - Google Patents

Improvements in and relating to microscopes

Info

Publication number
GB990405A
GB990405A GB4723362A GB4723362A GB990405A GB 990405 A GB990405 A GB 990405A GB 4723362 A GB4723362 A GB 4723362A GB 4723362 A GB4723362 A GB 4723362A GB 990405 A GB990405 A GB 990405A
Authority
GB
United Kingdom
Prior art keywords
microscopes
annuli
fixed element
selector
fixed
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
GB4723362A
Inventor
Alan Charles Sibert
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.)
GILLETT AND SIBERT OPTICS Ltd
Original Assignee
GILLETT AND SIBERT OPTICS 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 GILLETT AND SIBERT OPTICS Ltd filed Critical GILLETT AND SIBERT OPTICS Ltd
Priority to GB4723362A priority Critical patent/GB990405A/en
Publication of GB990405A publication Critical patent/GB990405A/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
    • G02B21/14—Condensers affording illumination for phase-contrast observation

Landscapes

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

Abstract

990,405. Zone plates for microscopes. GILLET & SIBERT (OPTICS) Ltd; March 13, 1964 [Dec. 14,1962], No. 47233/62. Heading G2J. A contrast intensifying device for use with microscopes comprises a fixed device 1 having a plurality of transparent phase shifting annuli 1a, 1b 1c and a selector element 2 bearing a plurality of linearly separated transparent annuli 2a, 2b, 2c whose dimensions are related to the annuli of the fixed element 1. A particular annulus of the fixed element 1 is selected by shifting the selector 2 in the slide 3 to bring a particular annulus into alignment with the fixed element 1.
GB4723362A 1962-12-14 1962-12-14 Improvements in and relating to microscopes Expired GB990405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4723362A GB990405A (en) 1962-12-14 1962-12-14 Improvements in and relating to microscopes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4723362A GB990405A (en) 1962-12-14 1962-12-14 Improvements in and relating to microscopes

Publications (1)

Publication Number Publication Date
GB990405A true GB990405A (en) 1965-04-28

Family

ID=10444240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4723362A Expired GB990405A (en) 1962-12-14 1962-12-14 Improvements in and relating to microscopes

Country Status (1)

Country Link
GB (1) GB990405A (en)

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