GB1269133A - Lens systems - Google Patents

Lens systems

Info

Publication number
GB1269133A
GB1269133A GB3579769A GB3579769A GB1269133A GB 1269133 A GB1269133 A GB 1269133A GB 3579769 A GB3579769 A GB 3579769A GB 3579769 A GB3579769 A GB 3579769A GB 1269133 A GB1269133 A GB 1269133A
Authority
GB
United Kingdom
Prior art keywords
triplet
component
cooke
components
divergent component
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
GB3579769A
Inventor
David John Day
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB3579769A priority Critical patent/GB1269133A/en
Publication of GB1269133A publication Critical patent/GB1269133A/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
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Landscapes

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

Abstract

1,269,133. Lens systems. RANK ORGANISATION Ltd. July 14, 1970 [July 16, 1969], No. 35797/69. Heading G2J. An optical objective comprises a "Cooke triplet formation" I, II, III and a divergent component IV axially spaced behind the rear surface of the triplet by 0‹25-0‹75F where F is the equivalent focal length of the complete objective, all the components being made of light-transmitting synthetic resins, and the triplet including an aspheric surface. The term "Cooke triplet formation" refers to a substantially anastigmatic Cooke triplet which is in itself fully corrected apart from a large Petzval sum, or to an assembly of three components having the appearance of a Cooke triplet, but which in itself is not substantially anastigmatic, the presence of the divergent component being necessary for reduction in the Petzval sum and also for completing correction of other aberations. The aspheric surface is preferably the front surface of the third component. When the divergent component is spaced at least 0À2F from the image plane, the triplet is modified so that the four components are corrected in conjunction. When the divergent component is less than 0À2F from the image plane, the triplet is selfcorrecting. The two outer components of the triplet and the divergent component may be of polymethyl methacrylate, and the centre component of the triplet of polystyrene. Optical data are given for three examples. The objective preferably has an external stop in front of the Cooke triplet, and two such objectives may be arranged to share a common diaphragm to form a copying or relay lens.
GB3579769A 1969-07-16 1969-07-16 Lens systems Expired GB1269133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3579769A GB1269133A (en) 1969-07-16 1969-07-16 Lens systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3579769A GB1269133A (en) 1969-07-16 1969-07-16 Lens systems

Publications (1)

Publication Number Publication Date
GB1269133A true GB1269133A (en) 1972-04-06

Family

ID=10381643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3579769A Expired GB1269133A (en) 1969-07-16 1969-07-16 Lens systems

Country Status (1)

Country Link
GB (1) GB1269133A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186662A1 (en) * 1972-04-25 1974-01-11 Dudragne Raymon
US4368956A (en) * 1979-12-27 1983-01-18 Canon Kabushiki Kaisha Compact photographic objective
US4682862A (en) * 1986-01-17 1987-07-28 U.S. Precision Lens Incorporated Projection lens
US4685774A (en) * 1986-01-17 1987-08-11 U.S. Precision Lens, Incorporated Projection lens
US4697892A (en) * 1983-10-18 1987-10-06 U.S. Precision Lens, Inc. Projection lens
US4707084A (en) * 1984-08-21 1987-11-17 U.S. Precision Lens, Inc. Projection lens
US4755028A (en) * 1986-10-14 1988-07-05 U.S Precision Lens, Incorporated Projection lens with an aspherical corrector lens element
US4776681A (en) * 1986-01-17 1988-10-11 U.S. Precision Lens, Incorporated Projection lens
US4801196A (en) * 1984-08-21 1989-01-31 U.S. Precision Lens, Incorporated Wide angle projection lens
US4963007A (en) * 1989-09-05 1990-10-16 U.S. Precision Lens, Inc. Color corrected projection lens
US7710667B2 (en) 2008-06-25 2010-05-04 Aptina Imaging Corp. Imaging module with symmetrical lens system and method of manufacture
US7773317B2 (en) 2008-07-01 2010-08-10 Aptina Imaging Corp. Lens system with symmetrical optics

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186662A1 (en) * 1972-04-25 1974-01-11 Dudragne Raymon
US4368956A (en) * 1979-12-27 1983-01-18 Canon Kabushiki Kaisha Compact photographic objective
US4697892A (en) * 1983-10-18 1987-10-06 U.S. Precision Lens, Inc. Projection lens
US4801196A (en) * 1984-08-21 1989-01-31 U.S. Precision Lens, Incorporated Wide angle projection lens
US4707084A (en) * 1984-08-21 1987-11-17 U.S. Precision Lens, Inc. Projection lens
US4682862A (en) * 1986-01-17 1987-07-28 U.S. Precision Lens Incorporated Projection lens
US4685774A (en) * 1986-01-17 1987-08-11 U.S. Precision Lens, Incorporated Projection lens
US4776681A (en) * 1986-01-17 1988-10-11 U.S. Precision Lens, Incorporated Projection lens
US4755028A (en) * 1986-10-14 1988-07-05 U.S Precision Lens, Incorporated Projection lens with an aspherical corrector lens element
US4963007A (en) * 1989-09-05 1990-10-16 U.S. Precision Lens, Inc. Color corrected projection lens
USRE35310E (en) * 1989-09-05 1996-08-06 U.S. Precision Lens Incorporated Color corrected projection lens
US7710667B2 (en) 2008-06-25 2010-05-04 Aptina Imaging Corp. Imaging module with symmetrical lens system and method of manufacture
US7773317B2 (en) 2008-07-01 2010-08-10 Aptina Imaging Corp. Lens system with symmetrical optics

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