GB559950A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB559950A
GB559950A GB1092242A GB1092242A GB559950A GB 559950 A GB559950 A GB 559950A GB 1092242 A GB1092242 A GB 1092242A GB 1092242 A GB1092242 A GB 1092242A GB 559950 A GB559950 A GB 559950A
Authority
GB
United Kingdom
Prior art keywords
reflecting surfaces
taylor
respect
point
correcting plate
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
GB1092242A
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 GB1092242A priority Critical patent/GB559950A/en
Publication of GB559950A publication Critical patent/GB559950A/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
    • G02B17/0884—Catadioptric systems having a pupil corrector
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

559,950. Optical objectives. TAYLOR, TAYLOR & HOBSON, Ltd., and WARMISHAM, A. Aug. 5, 1942, No. 10922. Addition to 548,384. [Class 97 (i)] The two holosymmetrically-arranged parts of a reflecting objective according to the parent Specification are so disposed that a principal focus of each lies at the stop position with respect to which the parts are corrected. As shown, the objective comprises spherical metallized reflecting surfaces R<SP>1</SP>, R<SP>2</SP>, R<SP>5</SP>, Re, all of equal radius and symmetrically arranged with respect to a point A3. The focal plane of each part, and the focal surface R<SP>3</SP> of a correcting plate, pass through the point A3. The correcting plate may consist of dense barium crown glass or of a material according to Specification 548,729 and transparent over a spectral range extending well beyond the visible spectrum. Each pair of reflecting surfaces may be internally-reflecting surfaces of a piece of glass, fused silica &c ; some or all of the reflecting surfaces may be spheroidal. Complete data for one example are set out.
GB1092242A 1942-08-05 1942-08-05 Improvements in or relating to optical objectives Expired GB559950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1092242A GB559950A (en) 1942-08-05 1942-08-05 Improvements in or relating to optical objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1092242A GB559950A (en) 1942-08-05 1942-08-05 Improvements in or relating to optical objectives

Publications (1)

Publication Number Publication Date
GB559950A true GB559950A (en) 1944-03-13

Family

ID=9976771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1092242A Expired GB559950A (en) 1942-08-05 1942-08-05 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB559950A (en)

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