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DE724026C - Television projection tubes - Google Patents

Television projection tubes

Info

Publication number
DE724026C
DE724026C DEB177690D DEB0177690D DE724026C DE 724026 C DE724026 C DE 724026C DE B177690 D DEB177690 D DE B177690D DE B0177690 D DEB0177690 D DE B0177690D DE 724026 C DE724026 C DE 724026C
Authority
DE
Germany
Prior art keywords
mirror
lens
concave
tube
fluorescent screen
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
DEB177690D
Other languages
German (de)
Inventor
Karl Martin
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.)
EMIL BUSCH
OPTISCHE IND AG
Original Assignee
EMIL BUSCH
OPTISCHE IND AG
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 EMIL BUSCH, OPTISCHE IND AG filed Critical EMIL BUSCH
Priority to DEB177690D priority Critical patent/DE724026C/en
Application granted granted Critical
Publication of DE724026C publication Critical patent/DE724026C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/74Projection arrangements for image reproduction, e.g. using eidophor
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08Catadioptric systems
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08Catadioptric systems
    • G02B17/0856Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08Catadioptric systems
    • G02B17/0884Catadioptric systems having a pupil corrector
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/12Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Astronomy & Astrophysics (AREA)
  • Lenses (AREA)

Description

Fernsehprojektionsröhre Die Erfindung betrifft die verbesserte Ausgestaltung von Fernsehprojektionsröhren, bei denen das Fluoreszenzschirmbild mit Hilfe eines Hohlspiegels und einer die Abschlußwand der Röhre bildenden Linse abgebildet wird.Television projection tube The invention relates to the improved design of television projection tubes, in which the fluorescent screen image with the help of a Concave mirror and a lens forming the end wall of the tube is imaged.

Bei einer bekannten Proj ektionsröhre dieser Art besteht die eine Röhrenabschlußlvand aus einem der inneren Seite des Fl.uoreszenzschirmes zugekehrten einfachen Hohlspiegel und die andere Abschl.ußwand aus einer Sammellinse. Diese Spiegeloptik ergibt ein unbrauchbares Bild des ausgedehnten Fluoreszen.zschirmes, weil sie reit starken sphärischen, chromatischen und Randfehlern behaftet ist.In a known projection tube of this type there is one Tube end wall from one facing the inner side of the fluorescent screen simple concave mirror and the other end wall from a converging lens. These Mirror optics result in an unusable image of the extended fluorescent screen, because it is afflicted with strong spherical, chromatic and marginal defects.

Es ist an sich in der Optik bekannt, zur Aufhebung von sphärischen und chromatisehen Fehlern einen Linsenspiegel mit einer Konvexkonkavlinse zu vereinigen. Dies ist aber nur bei der Abbildung von achsennahen Objektiven geringer Ausdehnung, z. B. durch Fernrohr- oder Mikroskopobjektive, möglich, nicht aber bei der Abbildung räumlich weit ausgedehnter und weit aus dem Axialbereich hinausragender Objekte, wie es das Fluoreszenzschirmbil.d einer Fernsehproj-ektionsröhre darstellt.It is known per se in optics to cancel spherical ones and chromatic errors to unite a lens mirror with a convex-concave lens. However, this is only possible when imaging near-axis lenses of small dimensions, z. B. by telescope or microscope lenses, possible, but not in the illustration objects that are spatially extensive and protrude far from the axial area, as shown by the fluorescent screen image of a television projection tube.

Die Erfindung betrifft eine Ferusehprojektionsröhre, bei der das Fluoreszenzschirmbild mit Hilfe eines Hohlspiegels und einer die Abschlußwand der Röhre bildenden Linse abgebildet wird, und kennzeichnet sich dadurch, daß die spiegelnde Fläche Bestandteil eines Linsenspiegels (Manginspiegel) ist, daß die konvexkonkave Äbschlußlinse auf ihrer konkaven Fläche mit dem gewölbten Fluoreszenzschirm bedeckt ist, und daß die Bestandteile derart aufeinander abgestimmt sind, daß eine achromatische, aplanatische und anastigmatische Abbildung erreicht wird.The invention relates to a Feruseh projection tube in which the fluorescent screen image with the help of a concave mirror and a lens forming the end wall of the tube is mapped, and is characterized by the fact that the reflective surface is a component of a lens mirror (Mangin mirror) is that the convex-concave final lens on its concave surface is covered with the curved fluorescent screen, and that the Components are coordinated in such a way that an achromatic, aplanatic and anastigmatic mapping is achieved.

In der Abbildung ist ein Ausführungsbeispiel der Erfindung dargestellt.In the figure, an embodiment of the invention is shown.

Die Projektionsröhre besteht aus dem die optischen Projektionsmittel enthaltenden Teil i und dem nicht näher dargestellten, die elektrische Anordnung enthaltenden Teil 2. Der Röhrenteil i wird auf der einen Seite von der Konvexkonkavlinse 3 und auf der anderen Seite von dem Linsenspiegel 4 (Manginspiegel) abgeschlossen, der in seinem mittleren Teil den Röhrenteil 2 trägt. Auf der dem Gehäuseinnern zugewendeten Konkavfläche der Linse 3 ist in der Mitte der Leuchtschirm 5 vorgesehen, der gegebenenfalls zur Verstärkung der Strahlung einen lichtreflektierenden Untergrund 5 i haben kann. Der Linsenspiegel 4. hebt die chromatischen Fehler auf und bildet in Verbindung mit der Konvexkonkavl.ins.e ein aplanatischcs und anastigmatisches System.The projection tube consists of the optical projection means containing part i and the not shown, the electrical arrangement containing part 2. The tube part i is on one side of the convex-concave lens 3 and closed on the other side by the lens mirror 4 (Mangin mirror), which carries the tube part 2 in its middle part. On the one facing the inside of the case Concave surface of the lens 3 is provided in the center of the luminescent screen 5, which optionally can have a light-reflecting background 5 i to amplify the radiation. The lens mirror 4. cancels the chromatic errors and forms in connection with the convex-concave ins.e an aplanatic and anastigmatic system.

Claims (1)

PATENTANSPRUCH: Fernsehproj ektionsröhre, bei der das Fluoreszenzschirmbild mit Hilfe eines Hohlspiegels und einer die Abschl@ußwand der Röhre bildenden Linse abgebildet wird, dadurch gekennzeichnet, daß die spiegelnde Fläche Bestandteil eines Linsenspiegels (Manginspiegel) ist, daß die konvexkonkave Abschlußlinse auf ihrer konkaven Fläche mit dem gewölten Fluoreszenzschirm bedeckt ist, und« daß die Bestandteile derart aufeinander abgestimmt sind, d:aß eine achromatische, aplanatische und anastigmatische Abbildung erreicht wird.PATENT CLAIM: TV projection tube in which the fluorescent screen image with the help of a concave mirror and a lens forming the end wall of the tube is mapped, characterized in that the reflective surface is part of a Lens mirror (Mangin mirror) is that the convex-concave final lens on their concave surface is covered with the curved fluorescent screen, and «that the components are coordinated in such a way that they are achromatic, aplanatic and anastigmatic Figure is achieved.
DEB177690D 1937-03-11 1937-03-11 Television projection tubes Expired DE724026C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB177690D DE724026C (en) 1937-03-11 1937-03-11 Television projection tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB177690D DE724026C (en) 1937-03-11 1937-03-11 Television projection tubes

Publications (1)

Publication Number Publication Date
DE724026C true DE724026C (en) 1942-08-15

Family

ID=7008247

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB177690D Expired DE724026C (en) 1937-03-11 1937-03-11 Television projection tubes

Country Status (1)

Country Link
DE (1) DE724026C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730013A (en) * 1950-09-02 1956-01-10 Leitz Ernst Gmbh Reflecting lens objective
US2730926A (en) * 1954-08-25 1956-01-17 Back Frank Gerard Catadioptric telephoto objective systems
US2817270A (en) * 1955-12-12 1957-12-24 Leitz Ernst Gmbh Telescope objective systems
US3326621A (en) * 1961-01-19 1967-06-20 Nygorden Per Johan Berggren De Catadioptric imaging systems
US4108539A (en) * 1976-11-18 1978-08-22 Hewlett-Packard Company Reflecting lens system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730013A (en) * 1950-09-02 1956-01-10 Leitz Ernst Gmbh Reflecting lens objective
US2730926A (en) * 1954-08-25 1956-01-17 Back Frank Gerard Catadioptric telephoto objective systems
US2817270A (en) * 1955-12-12 1957-12-24 Leitz Ernst Gmbh Telescope objective systems
US3326621A (en) * 1961-01-19 1967-06-20 Nygorden Per Johan Berggren De Catadioptric imaging systems
US4108539A (en) * 1976-11-18 1978-08-22 Hewlett-Packard Company Reflecting lens system

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