GB756521A - Improvements relating to optical mirror systems - Google Patents

Improvements relating to optical mirror systems

Info

Publication number
GB756521A
GB756521A GB27425/54A GB2742554A GB756521A GB 756521 A GB756521 A GB 756521A GB 27425/54 A GB27425/54 A GB 27425/54A GB 2742554 A GB2742554 A GB 2742554A GB 756521 A GB756521 A GB 756521A
Authority
GB
United Kingdom
Prior art keywords
mirror
light
concave
film
image
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
GB27425/54A
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.)
Optische Industrie de Oude Delft NV
Original Assignee
Optische Industrie de Oude Delft NV
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 Optische Industrie de Oude Delft NV filed Critical Optische Industrie de Oude Delft NV
Publication of GB756521A publication Critical patent/GB756521A/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
    • G02B17/0804—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

Landscapes

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

Abstract

756,521. Optical systems; photographic cameras. NAAMLOOZE VENNOOTSCHAP OPTISCHE INDUSTRIE DE OUDE DELFT. Sept. 22, 1954 [Sept. 23, 1953], No. 27425/54. Classes 97 (1) and 98 (1). An image-forming mirror system for use with linear magnification or reduction of less than 1 : 5 comprises a concave spherical mirror axially aligned with at least one correcting element, and a plane mirror perpendicular to that axis, light from the long conjugator focus of the system being reflected first by the outer zone of the plane mirror and then by inter zone of the concave mirror to form an image. The Figure shows the system applied to a camera for indirect X-ray photography in which the image of a fluorescent screen 2 is formed on a film 8 by the optical system. This comprises a negative meniscus lens 3 forming the correcting element which receives the light from the screen 2. After passage through a conical lens 4 the light is reflected by the inter zones of a plane mirror 5 on to the concave mirror 6 which focuses the light upon the film 8. Baffles 12, 13 are provided to prevent direct light from the screen 2 reaching the film. The correcting element may be located between the concave and plane mirrors. Specifications 637,645 and 638,975 are referred to.
GB27425/54A 1953-09-23 1954-09-22 Improvements relating to optical mirror systems Expired GB756521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL756521X 1953-09-23

Publications (1)

Publication Number Publication Date
GB756521A true GB756521A (en) 1956-09-05

Family

ID=19825287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27425/54A Expired GB756521A (en) 1953-09-23 1954-09-22 Improvements relating to optical mirror systems

Country Status (1)

Country Link
GB (1) GB756521A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984850A (en) * 1970-05-26 1976-10-05 Optical & Electronic Research, Inc. Sequence camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984850A (en) * 1970-05-26 1976-10-05 Optical & Electronic Research, Inc. Sequence camera

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