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GB470522A - Improvements in lenses - Google Patents

Improvements in lenses

Info

Publication number
GB470522A
GB470522A GB1264636A GB1264636A GB470522A GB 470522 A GB470522 A GB 470522A GB 1264636 A GB1264636 A GB 1264636A GB 1264636 A GB1264636 A GB 1264636A GB 470522 A GB470522 A GB 470522A
Authority
GB
United Kingdom
Prior art keywords
adjacent
elements
diaphragm
collective
inner element
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
GB1264636A
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.)
Kapella Ltd
Original Assignee
Kapella 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 Kapella Ltd filed Critical Kapella Ltd
Priority to GB1264636A priority Critical patent/GB470522A/en
Publication of GB470522A publication Critical patent/GB470522A/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

470,522. Lenses. WARMISHAM, A., and KAPELLA, Ltd. May 5, 1936, No. 12646. [Class 97 (i)] In an objective of the kind comprising two collective components enclosing two compound dispersive meniscus components with their concave surfaces facing each other and having a diaphragm between them, each dispersive component consists of three elements cemented together, the outer elements adjacent the diaphragm being collective menisci, each of which has a higher refractive index than the inner element adjacent to it. Each of these meniscus elements may also have a lower Abbe number than that of the adjacent inner element. Data are given for two examples, each having an aperture F /2.
GB1264636A 1936-05-05 1936-05-05 Improvements in lenses Expired GB470522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1264636A GB470522A (en) 1936-05-05 1936-05-05 Improvements in lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1264636A GB470522A (en) 1936-05-05 1936-05-05 Improvements in lenses

Publications (1)

Publication Number Publication Date
GB470522A true GB470522A (en) 1937-08-17

Family

ID=10008524

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1264636A Expired GB470522A (en) 1936-05-05 1936-05-05 Improvements in lenses

Country Status (1)

Country Link
GB (1) GB470522A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611295A (en) * 1951-06-14 1952-09-23 Eastman Kodak Co Optical objective comprising a meniscus doublet and meniscus triplet between two positive components
US2645973A (en) * 1951-01-31 1953-07-21 Canon Camera Company Ltd High aperture four component objective of the gauss type
US3038380A (en) * 1958-02-27 1962-06-12 Zeiss Carl Asymmetrical photographic objective

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645973A (en) * 1951-01-31 1953-07-21 Canon Camera Company Ltd High aperture four component objective of the gauss type
US2611295A (en) * 1951-06-14 1952-09-23 Eastman Kodak Co Optical objective comprising a meniscus doublet and meniscus triplet between two positive components
US3038380A (en) * 1958-02-27 1962-06-12 Zeiss Carl Asymmetrical photographic objective

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