DE924914C - SLR camera - Google Patents

SLR camera

Info

Publication number
DE924914C
DE924914C DEA3194D DEA0003194D DE924914C DE 924914 C DE924914 C DE 924914C DE A3194 D DEA3194 D DE A3194D DE A0003194 D DEA0003194 D DE A0003194D DE 924914 C DE924914 C DE 924914C
Authority
DE
Germany
Prior art keywords
gate
reflex
camera according
slr camera
lens
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
DEA3194D
Other languages
German (de)
Inventor
August Arnold
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.)
Arnold and Richter KG
Original Assignee
Arnold and Richter KG
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 Arnold and Richter KG filed Critical Arnold and Richter KG
Priority to DEA3194D priority Critical patent/DE924914C/en
Application granted granted Critical
Publication of DE924914C publication Critical patent/DE924914C/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
    • G03B13/00Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18Focusing aids
    • G03B13/24Focusing screens
    • G03B13/26Focusing screens with magnifiers for inspecting image formed on screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Description

Die Erfindung betrifft eine Spiegelreflexkamera mit Beobachtungseinrichtung und besteht darin, daß die Bildbetrachtungsmattscheibe auf der dem Strahlengang des Aufnahmeobjektivs zugekehrten Seite ein Reflexschutzgatter besitzt; dieses besteht beispielsweise aus mehreren sehr dünnen, parallel zur Umlenkrichtung der Spiegelre$exblende angeordneten oder ein wabenartiges Gatter bildenden Blechen. Das Reflexschutzgatter kann in an sich bekannter Weise eine lichtabsorbierende Farbgebung haben. Die Blende kann gleichzeitig als Fadenkreuz bzw. Visiereinrichtung und/oder als Bildausschnittbegrenzer dienen.The invention relates to a reflex camera with an observation device and consists in the fact that the image viewing screen is on the beam path the side facing the taking lens has a reflex protection gate; this exists for example from several very thin ones, parallel to the direction of deflection of the mirror reflector arranged or a honeycomb-like gate forming sheets. The reflex protection gate can have a light-absorbing color in a manner known per se. The aperture can be used at the same time as a crosshair or sighting device and / or as an image section delimiter to serve.

Der Vorteil gegenüber Spiegelreflexkameras ohne das erfindungsgemäße Reflexschutzgatter besteht darin, daß vermieden wird, daß Licht, welches vom Aufnahmeobjektiv her auf die Mattscheibe gelangt, von dieser reflektiert wird und als schleierbildendes Streulicht zusätzlich auf den Film gelangen kann.The advantage over SLR cameras without the inventive Reflex protection gate is that it is avoided that light from the taking lens reaches the screen, is reflected by it and creates a haze Scattered light can also reach the film.

Die Erfindung ist in der Zeichnung in einem Ausführungsbeispiel dargestellt, und es bedeutet Abb. i. Ansicht und Teilschnitt einer Lauffilmspiegelreflexkamera, Abb.2 Ansicht des Reflexschutzgatters in vergrößertem Maßstab.The invention is shown in the drawing in an exemplary embodiment, and it means fig. i. View and partial section of a film reflex camera, Fig.2 View of the reflex protection gate on an enlarged scale.

Die in' Abb. i dargestellte Kamera stellt nur eines der zahllosen Ausführungsbeispiele einer Kamera dar, für die das erfindungsgemäße Reflexschutzgatter Anwendung finden kann. Innerhalb des Gehäuses i der Kamera dreht sich die Reflexspiegelblende 2 vor einem der auf einem Revolverknopf 3 gelagerten Objektive 4. Parallel zum Objektivstrahlengang 5 befindet sich die Mattscheibe 6, durch die der Aufnahmelichtstrahl 5 im Falle der Vorbeibewegung des Spiegelsektörs der Blende 2 vor dem Objektiv 4 hindurchtritt. Der Lichtstrahl 5 gelangt ferner auf den Umlenkspiege17 und von dort durch den Beobachtungstubus 8 zum Auge des Kameramanus. Auf der Mattscheibe 6 befindet sich das Reflexschutägatter 9, das entsprechend Abb.2 aus einem Rahmen i o mit eingefügten, sich kreuzenden dünnen Blechen io und i i besteht. Zufolge des Gatters 9 können Lichtstrahlen zwischen der hinteren Linse des Aufnahmeobjektivs und dem Film nicht auf die Mattscheibe gelangen und von dieser auf den Film reflektiert werden.The camera shown in Fig. I represents only one of the countless exemplary embodiments of a camera for which the anti-reflex gate according to the invention can be used. Inside the housing i of the camera, the reflective mirror diaphragm 2 rotates in front of one of the objectives 4 mounted on a revolver button 3. The ground glass 6 is located parallel to the objective beam path 5, through which the recording light beam 5, if the mirror section of the diaphragm 2 moves past, in front of the objective 4 passes through. The light beam 5 also reaches the deflecting mirror 17 and from there through the observation tube 8 to the eye of the camera manual. On the ground glass 6 is the reflex protection gate 9, which, as shown in Fig. 2, consists of a frame io with inserted, intersecting thin sheets io and ii. As a result of the gate 9, light rays between the rear lens of the taking lens and the film cannot reach the focusing screen and be reflected by this onto the film.

Claims (2)

PATENTANSPRÜCHE: r. Spiegelreflexkamera mit Beobachtungseinrichtung, dadurch gekennzeichnet, daß die Bildbetrachtungsmattscheibe auf der dem Strahlengang des Aufnahmeobjektivs zugekehrten Seite ein Reflexschutzgatter besitzt. PATENT CLAIMS: r. Single-lens reflex camera with observation device, characterized in that the matt image viewing screen has a reflex protection gate on the side facing the beam path of the taking lens. 2. Spiegelreflexkamera nach Anspruch i, dadurch gekennzeichnet, daß der Reflexschutz aus mehreren, sehr dünnen parallelen, ein wabenartiges Gatter bildenden Blechen besteht. -3. Spiegelreflexkamera nach Anspruch i und 2, dadurch gekennzeichnet, daß das Gatter in an sich bekannter Weise eine lichtabsorbierende Farbgebung besitzt. ¢. Spiegelreflexkamera nach Anspruch i bis 3, dadurch gekennzeichnet, daß die Gatterblende gleichzeitig als Fadenkreuz bzw. Visiereinrichtung und/oder als Bildausschnittbegrenzer dient. Angezogene Druckschriften: Deutsche Patentschrift Nr. 693 279.2. SLR camera according to claim i, characterized in that the reflex protection consists of several, very thin parallel, a honeycomb-like grid forming metal sheets. -3. SLR camera according to claim i and 2, characterized in that the gate is known per se Way has a light-absorbing color. ¢. Single-lens reflex camera according to claim i to 3, characterized in that the gate diaphragm at the same time as a crosshair or sighting device and / or serves as a delimiter. Referred publications: German patent specification No. 693 279.
DEA3194D 1942-09-19 1942-09-19 SLR camera Expired DE924914C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA3194D DE924914C (en) 1942-09-19 1942-09-19 SLR camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA3194D DE924914C (en) 1942-09-19 1942-09-19 SLR camera

Publications (1)

Publication Number Publication Date
DE924914C true DE924914C (en) 1955-03-10

Family

ID=6920147

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA3194D Expired DE924914C (en) 1942-09-19 1942-09-19 SLR camera

Country Status (1)

Country Link
DE (1) DE924914C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119117B (en) * 1959-09-24 1961-12-07 Dresden Feinmess Single-lens reflex screw cap for cinematographic cameras
FR2360904A1 (en) * 1976-08-02 1978-03-03 Panavision Inc ILLUMINATED DEPOLI GLASS FOR CAMERA

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE693279C (en) * 1937-04-16 1940-07-05 Tobis Tonbild Syndikat Akt Ges Light protection device on photographic and cinematographic apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE693279C (en) * 1937-04-16 1940-07-05 Tobis Tonbild Syndikat Akt Ges Light protection device on photographic and cinematographic apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119117B (en) * 1959-09-24 1961-12-07 Dresden Feinmess Single-lens reflex screw cap for cinematographic cameras
FR2360904A1 (en) * 1976-08-02 1978-03-03 Panavision Inc ILLUMINATED DEPOLI GLASS FOR CAMERA

Similar Documents

Publication Publication Date Title
DE924914C (en) SLR camera
DE718203C (en) Finder for photographic apparatus combined with the range finder
DE1422735A1 (en) Telescopic viewfinder for photographic or cinematographic cameras
DE687728C (en) Fluorescence images produced by a Braun tube
DE603613C (en) Range finder combined with a see-through viewfinder and coupled with the lens for photographic and cinematographic apparatus
DE652166C (en) Viewfinder for cinematographic recording devices
DE732199C (en) Viewfinder combined with a range finder
DE1268873B (en) Photographic lens
DE653860C (en) Photographic camera with built-in finder range finder
DE1272704B (en) Distance measuring arrangement with large measuring base for single-lens reflex cameras
DE1081301B (en) Galilean style viewfinder with mirrored frame for photographic cameras
DE1064734B (en) Optical imaging system
AT155243B (en) Optical system for the movement compensation of moving images.
AT218367B (en) Photographic camera
DE2005586C3 (en) Photographic viewfinder
DE668932C (en) Optics in optical sound recorders
DE643095C (en) Photographic 35mm camera with viewfinder chamber
DE609131C (en) Rangefinder for photographic apparatus
DE752425C (en) Reading device for graduations and scales
DE2448625A1 (en) FOCUS DEVICE FOR SINGLE-EYED REFLECTIVE CAMERAS
DE1248462B (en) Light measuring device for single-lens reflex cameras
AT218853B (en) Photographic or cinematographic camera with viewfinder and light meter
DE1045795B (en) Reflex viewfinder connected to the lens of a photographic camera, in particular a cinema camera
DE1281260B (en) See-through viewer
DE2122709A1 (en) Cinematographic or photographic camera with single lens reflex viewfinder