DE501914C - Ground glass frame for cameras - Google Patents

Ground glass frame for cameras

Info

Publication number
DE501914C
DE501914C DEN29114D DEN0029114D DE501914C DE 501914 C DE501914 C DE 501914C DE N29114 D DEN29114 D DE N29114D DE N0029114 D DEN0029114 D DE N0029114D DE 501914 C DE501914 C DE 501914C
Authority
DE
Germany
Prior art keywords
cameras
ground glass
glass frame
outer frame
button
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
DEN29114D
Other languages
German (de)
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
Publication date
Priority to DEN29114D priority Critical patent/DE501914C/en
Application granted granted Critical
Publication of DE501914C publication Critical patent/DE501914C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes
    • G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
    • G03B11/046—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids for viewfinders or eyepieces
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/24—Focusing screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Accessories Of Cameras (AREA)

Description

Den Gegenstand der Erfindung bildet die Ausführung des Mattscheibenrahmens für Kameras, bei der das Zuhaltungsmittel des Lichtschutzdeckels in einem Schlitze des Außenrahmens lose angeordnet ist. Dadurch wird außer einer wesentlichen Vereinfachung in der Herstellung der besondere Vorteil erzielt, daß man den Verschlußdeckel mit einer Hand öffnen oder schließen kann, die andere Hand also frei bekommt. Die Schließung des Deckels erfolgt gemäß der Erfindung durch einfaches Zudrücken, die Öffnung durch Seitwärtsverschieben des Verschlußknopfes. Es sind nun Ausführungsformen bekannt geworden, bei denen z. B. um Stifte bewegliche Klappriegel Verwendung finden. Diese Ausführungen haben aber den Nachteil, daß der Klappriegel sich selbsttätig lösen kann, wodurch unerwünschtes Licht in das Innere der Kamera eindringen kann. Ein weiterer Nachteil der bekannten Ausführungen liegt an dem unschönen und ungefälligen Aussehen und in der unhandlichen Bedienungsweise, die in Photographenkreisen störend empfunden werden. Diese Mängel beseitigt der Gegenstand der Erfindung durch Anordnung eines gleichzeitig als Verzierung dienenden Knopfes, der unter der Einwirkung einer äußerlich unsichtbaren Feder steht und mit einer Hand bedient werden kann, dabei den Vorteil hat, daß selbsttätiges Öffnen ausgeschlossen ist.The subject of the invention is the execution of the ground glass frame for cameras, in which the locking means of the light protection cover in a slot in the outer frame is loosely arranged. This not only significantly simplifies production the particular advantage achieved that you open the cap with one hand or can close, so the other hand gets free. The lid closes according to the invention by simply pressing, the opening by sliding the locking button sideways. There are now known embodiments in which, for. B. to find pins movable hinged latches. However, these versions have the disadvantage that the hinged bolt can release itself, which allows unwanted light to penetrate inside the camera. Another The disadvantage of the known designs is the unsightly and unpleasant appearance and in the unwieldy operation, which is perceived as annoying in photographer circles. These deficiencies are eliminated by the subject invention by arranging one at a time serving as an ornament button, which is under the influence of an externally invisible Spring stands and can be operated with one hand, has the advantage that it is automatic Opening is excluded.

Auf der Zeichnung ist ein Ausführungsbeispiel in zwei Abbildungen dargestellt, es zeigt:An exemplary embodiment is shown in the drawing shown in two figures, it shows:

Abb. ι eine Innenansicht gegen den Außenrahmen, Fig. Ι an inside view against the outer frame,

Abb. 2 einen Querschnitt.Fig. 2 shows a cross section.

Gemäß der Erfindung ist der Außenrahmen f mit einem Führungsschlitz c versehen, in welchem ein bei d verstärkter Zapfen e, der auf seiner Oberseite mit einem Zierknopf h versehen ist, geführt wird. In dem verstärkten Teil d, der geschlitzt ist, wird eine Blattfeder g eingelagert, die sich gegen den umgebördelten Rand des Außenrahmens f abstützt. Bewegt man also den Knopf h in der Pfeilrichtung (Abb. 2), so wird die Feder gespannt und durch das innere Ende des Knopfes h der Verschlußdeckel b freigegeben.According to the invention, the outer frame f is provided with a guide slot c in which a pin e reinforced at d and provided with a decorative button h on its upper side is guided. In the reinforced part d, which is slotted, a leaf spring g is stored, which is supported against the beaded edge of the outer frame f . If you move the button h in the direction of the arrow (Fig. 2), the spring is tensioned and the closure cover b is released through the inner end of the button h.

Claims (1)

Patentanspruch:Claim: Mattscheibenrahmen für Kameras, dadurch gekennzeichnet, daß die Zuhaltung Qi) für den Lichtschutzdeckel (δ) in einem Führungsschlitz (c) des Außenrahmens (f) lose angeordnet und geführt ist.Ground glass frame for cameras, characterized in that the tumbler Qi) for the light protection cover (δ) is loosely arranged and guided in a guide slot (c) in the outer frame (f). Hierzu ι Blatt ZeichnungenFor this purpose ι sheet of drawings
DEN29114D Ground glass frame for cameras Expired DE501914C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEN29114D DE501914C (en) Ground glass frame for cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN29114D DE501914C (en) Ground glass frame for cameras

Publications (1)

Publication Number Publication Date
DE501914C true DE501914C (en) 1930-07-19

Family

ID=7344950

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN29114D Expired DE501914C (en) Ground glass frame for cameras

Country Status (1)

Country Link
DE (1) DE501914C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833191A (en) * 1951-06-20 1958-05-06 Rollei Werke Franke Heidecke Holding means for photographic masks and accessories

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833191A (en) * 1951-06-20 1958-05-06 Rollei Werke Franke Heidecke Holding means for photographic masks and accessories

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