[go: up one dir, main page]

GB954808A - Optical objective - Google Patents

Optical objective

Info

Publication number
GB954808A
GB954808A GB2499561A GB2499561A GB954808A GB 954808 A GB954808 A GB 954808A GB 2499561 A GB2499561 A GB 2499561A GB 2499561 A GB2499561 A GB 2499561A GB 954808 A GB954808 A GB 954808A
Authority
GB
United Kingdom
Prior art keywords
less
components
objective
curvatures
curvature
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
GB2499561A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2499561A priority Critical patent/GB954808A/en
Publication of GB954808A publication Critical patent/GB954808A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

954,808. Optical objectives. C. G. WYNNE. July 4, 1962 [July 10, 1961], No. 24995/61. Heading G2J. The objective comprises five components of which the outer components 6, 7 are convergent elements, the middle component 8 is a biconcave element and the components 9,10 are both meniscus concave towards the element 8. In this objective the curvature of each air-glass surface in each of the components 9,10 is less than 2P, when P is the power of the objective, the curvature of the near surface of element 7 is less than 1. 5P and the sum of the curvatures of the front surface of element 6 and the rear surface of element 7 is less than 3P, curvatures being taken as positive in each case. Preferably the curvature of the front surface of element 6 is less than 1.5P and the sum of the curvatures of the two surfaces of element 8 is less than 3. 3P.
GB2499561A 1961-07-10 1961-07-10 Optical objective Expired GB954808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2499561A GB954808A (en) 1961-07-10 1961-07-10 Optical objective

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2499561A GB954808A (en) 1961-07-10 1961-07-10 Optical objective

Publications (1)

Publication Number Publication Date
GB954808A true GB954808A (en) 1964-04-08

Family

ID=10220531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2499561A Expired GB954808A (en) 1961-07-10 1961-07-10 Optical objective

Country Status (1)

Country Link
GB (1) GB954808A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2065535A1 (en) * 1969-10-27 1971-07-30 Ibm
US3733115A (en) * 1971-05-17 1973-05-15 Austin Co Symmetrical optical lens system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2065535A1 (en) * 1969-10-27 1971-07-30 Ibm
US3733115A (en) * 1971-05-17 1973-05-15 Austin Co Symmetrical optical lens system

Similar Documents

Publication Publication Date Title
GB1000903A (en) Improvements in or relating to optical coatings and assemblies employing same
IT7828665A0 (en) COMPOSITION SUITABLE FOR THE KINETIC DETERMINATION OF GLUCOSE.
GB954808A (en) Optical objective
IT8149070A0 (en) HIGH PENETRATION PROJECTILE ARRANGEMENT WITH FRONT PROPELLANT CAGE IN THE TIP AREA
GB924850A (en) Photograph objectives of variable focal length
GB1451277A (en) Lens structure
GB741511A (en) Improvements in or relating to optical objectives
GB941930A (en) Photographic objectives
GB883988A (en) Improvements in objective lenses
GB937333A (en) Afocal wide-angle supplementary objective
GB601837A (en) Improvements in or relating to optical objectives
GB954585A (en) Optical objective
GB975446A (en) Mirror objective particularly suitable for photographic purposes
GB931561A (en) Improvements in and relating to objective lenses
GB1034458A (en) Photographic objective
GB941754A (en) Optical objectives
Kukharskaya et al. Effect of chemical composition and thermal expansion of glasses on their waterproofing with polydimethylsiloxane
GB915221A (en) Improvements in or relating to variable focal objectives
GB815148A (en) Photographic objective
GB967924A (en) Photographic objective of variable focal length
GB750771A (en) Improvements in and relating to objective lenses
GB587761A (en) Improvements in or relating to optical objectives of the telephoto type
GB950765A (en) Improvements relating to optical apparatus for measuring small movements of a body
GB1029071A (en) Improvements in or relating to wide-angle objectives
AU230889B2 (en) Improvements. to'or relating to optical glass