DE909176C - Single-lens reflex camera - Google Patents

Single-lens reflex camera

Info

Publication number
DE909176C
DE909176C DEZ2726A DEZ0002726A DE909176C DE 909176 C DE909176 C DE 909176C DE Z2726 A DEZ2726 A DE Z2726A DE Z0002726 A DEZ0002726 A DE Z0002726A DE 909176 C DE909176 C DE 909176C
Authority
DE
Germany
Prior art keywords
lens
reflex camera
camera
lens reflex
viewfinder
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
DEZ2726A
Other languages
German (de)
Inventor
Edgar Sauer
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon 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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Priority to DEZ2726A priority Critical patent/DE909176C/en
Application granted granted Critical
Publication of DE909176C publication Critical patent/DE909176C/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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Description

Die Erfindung betrifft eine einäugige Spiegelreflexkaimera mit fest eingebautem Aufnahmeobjektiv und nicht auswechselbarer Suchereinrichtung. Bei diesem Kameratyp ist der Aufnahmeraum lediglich von hinten her durch die Filmbühne zugänglich. Man .kann dann zwar bei hochgeklapptem Spiegel innen an das Objektiv heran, aber Staub, der allmählich eindringt und durch den Klappspiegel aufgewirbelt wird, gelangt schließlich auch auf die Oberfläche der Feldlinse der Suchereinrichtung und auf den Spiegel selbst.The invention relates to a single-lens reflex camera with fixed built-in taking lens and non-interchangeable viewfinder. With this one Camera type, the recording space is only accessible from behind through the film stage. You can then get to the inside of the lens with the mirror folded up, but Dust, which gradually penetrates and is blown up by the folding mirror, arrives finally also on the surface of the field lens of the finder device and on the mirror itself.

Um nun diese Flächen reinigen zu können, ohne die Kamera demontieren zu müssen, ist- nach der Erfindung der vom Objektiv, von der Suchereinrichtung und dem Reflexspiegel in der Beobachtungslage umschlossene Kamerainnenraum durch verschließbare Wandöffnungen, vorzugsweise in einer Seitenwand zum Spulenraum, besonders zugänglich gemacht.In order to be able to clean these surfaces without dismantling the camera to have to, is according to the invention of the lens, the viewfinder and The interior of the camera enclosed by the reflector mirror in the observation position by closable Wall openings, preferably in a side wall to the coil space, particularly accessible made.

Die Erfindung wird an Hand eines Ausführungsbeispiels erläutert. Gemäß Fig. i ist in dem schematisch im Querschnitt dargestellten. Kameragehäuse i das' fest eingebaute Objektiv a, der schwenkbare Spiegel 3 und die Suchereinrichtung ¢ angeordnet, die @mi.t ihrer Feldlinse 5 den Aufnahmeraum. der Kamera oben begrenzt. In der Seitenwand 6, die, wie Fig. z im Horizontalschnitt durch die Kamera veranschaulicht, den Aufnahmeraum 7 vom Spulenraum 9 ,abteilt, ist eine Öffnung 8 vorgesehen. Sie kann durch die Gewindekappe io lichtdicht verschlossen werden und bildet bei abgenommenem Kamerarücken und entfernter Filmspüle einen Zugarg in den Raum zwischen dem Reflexspiegel 3 und der Feldlinse 5, die sich mittels eines eingeführten Pinsels oder Spezialreinigungsgerätes säubern lassen, wenn angesammelte Staubteilchen die Sichtverhältnisse verschlechtern. Der Reinigungsvorgang wird durch Einblicken in den Sucher betrachtet und kontrolliert.The invention is explained using an exemplary embodiment. According to Fig. I is shown schematically in cross section in the. Camera body i the ' Fixed lens a, the pivoting mirror 3 and the viewfinder ¢ arranged, the @ mi.t their field lens 5 the recording space. limited to the top of the camera. In the side wall 6, which, as Fig. Z illustrates in a horizontal section through the camera, dividing the receiving space 7 from the bobbin space 9, an opening 8 is provided. she can be closed light-tight with the threaded cap io and forms when removed Camera back and removed film sink a drawer into the space between the reflex mirror 3 and the field lens 5, which can be removed by means of an introduced brush or special cleaning device have it cleaned if accumulated dust particles impair visibility. The cleaning process is viewed and controlled by looking into the viewfinder.

Claims (1)

PATENTANSPRUCH: Einäugige Spiegelreflexkamera mit fest eingebautem Aufnahmeobjektiv und nicht auswechselbarer Suchereinrichtung, dadurch gekennzeichnet, daß für das Reinigen optischer Flächen der vom Objektiv, von der Suchereinrichtung und dem Reflexspiegel in Beobachtungslage umschlossene Innenraum durch verschließbare Wandöffnungen, vorzugsweise in einer Seitenwand zum Spulenraum, zugänglich ist.PATENT CLAIM: Single-lens reflex camera with built-in Recording lens and non-exchangeable viewfinder device, characterized in that that for cleaning optical surfaces of the lens, of the viewfinder and the reflective mirror in the observation position enclosed by closable space Wall openings, preferably in a side wall to the coil space, is accessible.
DEZ2726A 1952-06-06 1952-06-06 Single-lens reflex camera Expired DE909176C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ2726A DE909176C (en) 1952-06-06 1952-06-06 Single-lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ2726A DE909176C (en) 1952-06-06 1952-06-06 Single-lens reflex camera

Publications (1)

Publication Number Publication Date
DE909176C true DE909176C (en) 1954-04-15

Family

ID=7618628

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ2726A Expired DE909176C (en) 1952-06-06 1952-06-06 Single-lens reflex camera

Country Status (1)

Country Link
DE (1) DE909176C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152603B (en) * 1960-10-19 1963-08-08 Zeiss Ikon Ag SLR camera with permanently installed or built-in devices for viewing the viewfinder image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152603B (en) * 1960-10-19 1963-08-08 Zeiss Ikon Ag SLR camera with permanently installed or built-in devices for viewing the viewfinder image

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