GB575075A - Improvements relating to optical lenses - Google Patents

Improvements relating to optical lenses

Info

Publication number
GB575075A
GB575075A GB354944A GB354944A GB575075A GB 575075 A GB575075 A GB 575075A GB 354944 A GB354944 A GB 354944A GB 354944 A GB354944 A GB 354944A GB 575075 A GB575075 A GB 575075A
Authority
GB
United Kingdom
Prior art keywords
convergent
meniscus
consist
component
cemented
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
GB354944A
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 GB354944A priority Critical patent/GB575075A/en
Publication of GB575075A publication Critical patent/GB575075A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only

Landscapes

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

Abstract

575,075. Lenses. WRAY (OPTICAL WORKS), Ltd., and WYNNE, C. G. Feb. 25, 1944, No. 3549. [Class 97 (i)] An objective of the type comprising two meniscus and two convergent components arranged as shown, each meniscus having its convex surface of greater curvature than its concave surface, and neither convergent component including a cemented surface sufficiently dispersive to produce with the immediately preceding surface relative over-correction of axial spherical aberration on rays incident on the front of the lens parallel to the 'axis, is characterized by one of the menisci a, b being a compound component and the other c a single component. The convergent components e, f may each consist of a single element, as shown, or one may consist of two separate elements, or they may be formed as cemented doublets or triplets. One or more of the elements may be formed of crystal; for example, the element b may be formed of an alkali metal halide. Some of the surfaces may be slightly aspherical.
GB354944A 1944-02-25 1944-02-25 Improvements relating to optical lenses Expired GB575075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB354944A GB575075A (en) 1944-02-25 1944-02-25 Improvements relating to optical lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB354944A GB575075A (en) 1944-02-25 1944-02-25 Improvements relating to optical lenses

Publications (1)

Publication Number Publication Date
GB575075A true GB575075A (en) 1946-02-01

Family

ID=9760427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB354944A Expired GB575075A (en) 1944-02-25 1944-02-25 Improvements relating to optical lenses

Country Status (1)

Country Link
GB (1) GB575075A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1092228B (en) * 1953-06-10 1960-11-03 Zeiss Carl Fa Photographic lens
DE1215390B (en) * 1960-12-10 1966-04-28 Leitz Ernst Gmbh Photographic lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1092228B (en) * 1953-06-10 1960-11-03 Zeiss Carl Fa Photographic lens
DE1215390B (en) * 1960-12-10 1966-04-28 Leitz Ernst Gmbh Photographic lens

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