GB541652A - Improvements in or relating to optical systems - Google Patents

Improvements in or relating to optical systems

Info

Publication number
GB541652A
GB541652A GB790540A GB790540A GB541652A GB 541652 A GB541652 A GB 541652A GB 790540 A GB790540 A GB 790540A GB 790540 A GB790540 A GB 790540A GB 541652 A GB541652 A GB 541652A
Authority
GB
United Kingdom
Prior art keywords
spherical
correcting
reflecting
taylor
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
GB790540A
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.)
Taylor Taylor and Hobson Ltd
Original Assignee
Taylor Taylor and Hobson 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 Taylor Taylor and Hobson Ltd filed Critical Taylor Taylor and Hobson Ltd
Priority to GB790540A priority Critical patent/GB541652A/en
Publication of GB541652A publication Critical patent/GB541652A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G02B17/086—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors wherein the system is made of a single block of optical material, e.g. solid catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/008—Systems specially adapted to form image relays or chained systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0836—Catadioptric systems using more than three curved mirrors
    • G02B17/084—Catadioptric systems using more than three curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0884—Catadioptric systems having a pupil corrector
    • G02B17/0888—Catadioptric systems having a pupil corrector the corrector having at least one aspheric surface, e.g. Schmidt plates

Landscapes

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

Abstract

541,652. Optical systems. TAYLOR, TAYLOR & HOBSON, Ltd., and WARMISHAM, A. May 2, 1940, No. 7905. [Class 97 (i)] A reflecting system for use as an objective &c. comprises two or more axially aligned spherical reflecting surfaces having substantially coincident "equivalent centres of curvature ", i.e. the geometrical centres, or images thereof formed by paraxial imagery by any intervening elements, and means at or near such centre for simultaneously correcting for spherical aberration, coma, and astigmatism of such surfaces. Fig. 1 shows spherical surfaces R3, R4 having a common centre of curvature A2 through which passes an afocal surface R2 of a thin correcting and transmitting plate having a plane surface R1. Modifications are described in which the order of the surfaces is changed, in which the spherical surfaces are on opposite faces of a single piece of glass, in which three spherical surfaces and a reflecting correcting surface are provided, and in which, for equal scale copying, a symmetrical arrangement of two systems is employed. Complete data for five examples are set out. Specifications 541,650. and 541,651 are referred to.
GB790540A 1940-05-02 1940-05-02 Improvements in or relating to optical systems Expired GB541652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB790540A GB541652A (en) 1940-05-02 1940-05-02 Improvements in or relating to optical systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB790540A GB541652A (en) 1940-05-02 1940-05-02 Improvements in or relating to optical systems

Publications (1)

Publication Number Publication Date
GB541652A true GB541652A (en) 1941-12-05

Family

ID=9842052

Family Applications (1)

Application Number Title Priority Date Filing Date
GB790540A Expired GB541652A (en) 1940-05-02 1940-05-02 Improvements in or relating to optical systems

Country Status (1)

Country Link
GB (1) GB541652A (en)

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