GB577763A - Improvements relating to optical lenses - Google Patents

Improvements relating to optical lenses

Info

Publication number
GB577763A
GB577763A GB1102044A GB1102044A GB577763A GB 577763 A GB577763 A GB 577763A GB 1102044 A GB1102044 A GB 1102044A GB 1102044 A GB1102044 A GB 1102044A GB 577763 A GB577763 A GB 577763A
Authority
GB
United Kingdom
Prior art keywords
optical
divergent
members
convergent
optical lenses
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
GB1102044A
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 GB1102044A priority Critical patent/GB577763A/en
Publication of GB577763A publication Critical patent/GB577763A/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)
  • Lens Barrels (AREA)

Abstract

577,763. Optical objectives. WRAY (OPTICAL WORKS), Ltd., and WYNNE, C. G. June 8; 1944, No. 11020. Drawings to Specification. [Class 97 (i)] In an objective comprising a front and a back convergent member enclosing two divergent members, the distance measured along the optical axis from the rear surface of the front convergent member to'the front surface of the rear convergent member is less than .09 of the equivalent focal length of the whole lens, which has a relative aperture greater than F/6. The first divergent member is biconcave; the surface nearer the centre of the lens having a radius of curvature half that of the other surface, and the member being formed of highly dispersive material of AbbÚ number less than 45. The members may be simple or compound. Data are given.
GB1102044A 1944-06-08 1944-06-08 Improvements relating to optical lenses Expired GB577763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1102044A GB577763A (en) 1944-06-08 1944-06-08 Improvements relating to optical lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1102044A GB577763A (en) 1944-06-08 1944-06-08 Improvements relating to optical lenses

Publications (1)

Publication Number Publication Date
GB577763A true GB577763A (en) 1946-05-30

Family

ID=9978574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1102044A Expired GB577763A (en) 1944-06-08 1944-06-08 Improvements relating to optical lenses

Country Status (1)

Country Link
GB (1) GB577763A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732762A (en) * 1951-06-12 1956-01-31 Wide aperture photographic objective comprising
DE1163045B (en) * 1960-04-06 1964-02-13 Zeiss Carl Fa Reproduction lens
US4298252A (en) * 1979-08-30 1981-11-03 Fuji Photo Optical Co., Ltd. Rear stop type lens system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732762A (en) * 1951-06-12 1956-01-31 Wide aperture photographic objective comprising
DE1163045B (en) * 1960-04-06 1964-02-13 Zeiss Carl Fa Reproduction lens
US4298252A (en) * 1979-08-30 1981-11-03 Fuji Photo Optical Co., Ltd. Rear stop type lens system

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