GB710549A - Improvements in or relating to photographic film cameras or optical film projectors comprising a mirror objective - Google Patents

Improvements in or relating to photographic film cameras or optical film projectors comprising a mirror objective

Info

Publication number
GB710549A
GB710549A GB19725/52A GB1972552A GB710549A GB 710549 A GB710549 A GB 710549A GB 19725/52 A GB19725/52 A GB 19725/52A GB 1972552 A GB1972552 A GB 1972552A GB 710549 A GB710549 A GB 710549A
Authority
GB
United Kingdom
Prior art keywords
mirror
relating
projectors
film
aug
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
GB19725/52A
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 GB710549A publication Critical patent/GB710549A/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
    • G02B17/08—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
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/06—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors having a focussing action, e.g. parabolic mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Lens Barrels (AREA)

Abstract

710,549. Photographic cameras and optical projectors. NAAMLOOZE VENNOOTSCHAP OPTISCHE INDUSTRIE DE OUDE DELFT. Aug. 5, 1952 [Aug. 16, 1951], No. 19725/52. Classes 97(1) and 98(1) In a camera or projector for still or moving pictures with an objective consisting of a spherical concave mirror 2 and a correcting member 3 with an auxiliary mirror 4 facing the mirror 2 the film 6 is led to and from the film support 5 through a central aperture 8 in the mirror 2. The member 3 may be a Schmidt plate or a meniscus lens as described in Specifications 637,645 and 638,975 in which case the mirror 4, which may be plane or slightly curved, may be formed by grinding, polishing and silvering part of its convex surface. The film support 5 and the spools 7, 11 may form part of a detachable magazine. Specification 303,431, [Class 98(1)], also is referred to.
GB19725/52A 1951-08-16 1952-08-05 Improvements in or relating to photographic film cameras or optical film projectors comprising a mirror objective Expired GB710549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL710549X 1951-08-16

Publications (1)

Publication Number Publication Date
GB710549A true GB710549A (en) 1954-06-16

Family

ID=19812996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19725/52A Expired GB710549A (en) 1951-08-16 1952-08-05 Improvements in or relating to photographic film cameras or optical film projectors comprising a mirror objective

Country Status (1)

Country Link
GB (1) GB710549A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018746A1 (en) * 1979-04-30 1980-11-12 Hughes Aircraft Company Boresight tester for laser designators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018746A1 (en) * 1979-04-30 1980-11-12 Hughes Aircraft Company Boresight tester for laser designators

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