DE922325C - Single-lens reflex camera - Google Patents

Single-lens reflex camera

Info

Publication number
DE922325C
DE922325C DEM5417A DEM0005417A DE922325C DE 922325 C DE922325 C DE 922325C DE M5417 A DEM5417 A DE M5417A DE M0005417 A DEM0005417 A DE M0005417A DE 922325 C DE922325 C DE 922325C
Authority
DE
Germany
Prior art keywords
viewfinder
deflection system
eyepiece
lens reflex
reflex camera
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
DEM5417A
Other languages
German (de)
Inventor
Fritz Meyer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEM5417A priority Critical patent/DE922325C/en
Application granted granted Critical
Publication of DE922325C publication Critical patent/DE922325C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B19/00Cameras
    • G03B19/02Still-picture cameras
    • G03B19/12Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Viewfinders (AREA)

Description

Die Erfindung betrifft eine Weiterentwicklung der Vorrichtung nach dem Patent goo 410. Um eine hohe Einstellgenauigkeit zu erzielen, hat es sich als zweckmäßig erwiesen, das Mattscheibenbild zu vergrößern. Würde man zu diesem Zweck ein Sucherokular hoher Brechkraft verwenden, so müßte auch das Sucherobjektiv einem derartigen Okular angepaßt sein, was jedoch zu einer starken Verkleinerung des Sucherbildes führen würde. Außerdem würden störende Verzeichnungen im Sucherbild auftreten.The invention relates to a further development of the device according to the patent goo 410. In order to achieve a high level of setting accuracy, it has proven to be proven to be useful to enlarge the screen image. One would for this purpose If you use a viewfinder eyepiece with high refractive power, the viewfinder lens should also be one be adapted to such an eyepiece, but this leads to a sharp reduction in the size of the viewfinder image would lead. In addition, annoying distortions would occur in the viewfinder image.

Es wird daher erfindungsgemäß vorgeschlagen, daß zu den vom Schaltorgan betätigten optischen Elementen außer dem Ablenkungssystem noch weitere, im Sucherstrahlengang zwischen Okular und Ablenksystem eingebaute optische Elemente gehören. Diese können entweder mit dem Ablenksystem verkittet oder im Strahlengang zwischen Sucherokular und Mattscheibe ausschwenkbar angeordnet sein. .It is therefore proposed according to the invention that to the switching member actuated optical elements besides the deflection system still further, in the viewfinder beam path optical elements installed between the eyepiece and deflection system. these can either cemented with the deflection system or in the beam path between the viewfinder eyepiece and ground glass can be swiveled out. .

Eine derartige Anordnung hat den Vorteil, die hzpenbrechkraft auf ,Sucherokular und ausschwenkbare Optik aufzuteilen und somit eine günstige Anpassung des Sucherokulars an das Sucherobjektiv herbeizuführen.Such an arrangement has the advantage of reducing the power of the heart To split the viewfinder eyepiece and the swiveling optics and thus a favorable adjustment bring the viewfinder eyepiece to the viewfinder lens.

In der Zeichnung ist die Erfindung an einem Ausführungsbeispiel schematisch dargestellt. Das auf der Mattscheibe z entworfene Teilbild wird durch das Lupensystem, das aus Mattscheibenlinse r', Aufkittlinse 5 und Sucherokular 2 besteht, betrachtet. Die zwischen Mattscheibe z und Sucherokular 2 eingeschaltete Linse 5 bewirkt in dieser Stellung eine Erhöhung der Lupenvergrößerung und damit eine erhebliche Verbesserung der Ein-@stellgenaui-gk eit. Gleichzeitig -gibt sie die Möglichkeit, die Lupenbrechkraft zwischen Sucherokular und Aufkittlinse so aufzuteilen, daß das Sucherokular eine möglichst kleine Brechkraft, also eine große Brennweite hat. Hierdurch wird,das Sucherbild in bezug auf Bildgröße und Verzeichnung günstig beeinflußt, so daß nach dem gemeinsamen Ausschalten von Ablenksystem q. und Aufkittlinse 5 aus dem Sucherstrahlengang ein großes; verzeichnungsfreies Sucherbild erscheint.In the drawing, the invention is shown schematically in an exemplary embodiment shown. The partial image drawn on the focusing screen z is displayed by the magnifying glass system, which consists of ground glass lens r ', attached lens 5 and viewfinder eyepiece 2 is considered. The lens 5, which is switched on between the focusing screen z and the viewfinder eyepiece 2, causes FIG this position increases the magnification of the magnifying glass and thus a considerable improvement the setting accuracy. At the same time - it gives the opportunity to use the magnifying power to divide between viewfinder eyepiece and attachment lens so that the viewfinder eyepiece a the smallest possible refractive power, i.e. a large focal length. This becomes that Viewfinder image in terms of image size and distortion favorably influenced, so that after the joint deactivation of the deflection system q. and cemented lens 5 from the viewfinder beam path a big; A distortion-free viewfinder image appears.

Claims (1)

PATENTANSPRUCH: Einäugige Spiegelreflexkamera mit einem Schaltorgan, das während des Schaftvorganges zuerst den Reflexspiegel oder .den Reflexspiegel .und ein damit gekuppeltes optisches Ablenkungssystem in einem Durchsichtsucher aus dem Strahlengang schwenkt und dann den Verschluß auslöst, nach Patent goo q.so, dadurch gekennzeichnet, daß zu den vom Schaltorgan betätigten optischen Elementen außer dem Ablenkungssystem noch weitere, im Sucherstrahlengang zwischen Okular und Ablenkungssystem, eingebaute optische Elemente gehören.PATENT CLAIM: Single-lens reflex camera with a switching element, first the reflex mirror or the reflex mirror during the socket process .and an optical deflection system coupled therewith in a see-through viewer pivots out of the beam path and then releases the shutter, according to patent goo q.so, characterized in that to the actuated by the switching element optical elements in addition to the deflection system, there are others in the viewfinder beam path between the eyepiece and Deflection system that includes built-in optical elements.
DEM5417A 1950-07-30 1950-07-30 Single-lens reflex camera Expired DE922325C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM5417A DE922325C (en) 1950-07-30 1950-07-30 Single-lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM5417A DE922325C (en) 1950-07-30 1950-07-30 Single-lens reflex camera

Publications (1)

Publication Number Publication Date
DE922325C true DE922325C (en) 1955-01-13

Family

ID=7293109

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM5417A Expired DE922325C (en) 1950-07-30 1950-07-30 Single-lens reflex camera

Country Status (1)

Country Link
DE (1) DE922325C (en)

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