DE688159C - Reflex camera with aperture preselection - Google Patents
Reflex camera with aperture preselectionInfo
- Publication number
- DE688159C DE688159C DE1937P0076176 DEP0076176D DE688159C DE 688159 C DE688159 C DE 688159C DE 1937P0076176 DE1937P0076176 DE 1937P0076176 DE P0076176 D DEP0076176 D DE P0076176D DE 688159 C DE688159 C DE 688159C
- Authority
- DE
- Germany
- Prior art keywords
- aperture
- reflex camera
- ring
- mirror
- aperture ring
- 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
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)
- Cameras In General (AREA)
Description
Reflexkamera mit Blendenvorwahl Die Eifindung bezieht sich auf Reflexkameras- mit Blendenvorwahl. Bei diesen wird die zur Einstellung voll geöffnete Irisblende kurz vor der Aufnahme auf ein vorher gewähltes Maß .selbsttätig verkleinert.Reflex camera with aperture preselection The invention relates to reflex camera with aperture preselection. With these, the iris diaphragm is fully open for adjustment automatically reduced to a previously selected dimension shortly before the recording.
Dem Bekannten gegenüber besteht die Erfindung darin, daß die Wahl der zur Aufnahmegewünschten Blendenöffnung durch Verdrehung des vorderen Blendenringes (der Objektseite zugekehrter Ring, an dem in üblicher Weise die Lamellen der Irisblende angebracht sind), die Abblendung dagegen durch Verdrehen des hinteren Blendenrin.ges (der Schichtträgerseite zugekehrter Ring, in dem in üblicher Weise die Lamellen der Irisblende angebracht sind) erfolgt. Die weiteren Kennzeichen der Erfindung ergeben sich' aus der nachfolgenden Beschreibung und aus den Patentansprüchen.In relation to the known, the invention consists in the fact that the choice the aperture you want to take by turning the front aperture ring (Ring facing the object side, on which the lamellae of the iris diaphragm are usually attached are attached), while dimming is achieved by turning the rear aperture ring (The ring facing the layer carrier side, in which the lamellae are in the usual way the iris diaphragm are attached). The further characteristics of the invention emerge 'from the following description and from the claims.
In der Zeichnung ist eine .erfindungsgemäß ausgestattete Reflexkamera dargestellt. Abb. i zeigt die Kamera im Schnitt mit heruntergelassenem Spiegel und geöffneter Blende.In the drawing is a reflex camera equipped according to the invention shown. Fig. I shows the camera in section with the mirror lowered and open aperture.
Abb. z zeigt die Kamera im Schnitt mit verkleinerter Blendenöffnung inAufnahmestellung. Der Blendeneinstellring z ist, wie üblich, mit dem vorderen Blendenring i verbunden. Dagegen ist der hintere Blendenring 3 nicht wie sonst starr in der Objektivfassung angebracht, sondern er läßt sich in der Objektivfassung drehen und steht über dem Drehkörper 4., an dem ein Zahnradsegment ausgearbeitet ist, in Verbindung mit dem Kronenradsegment 5. Beim Heben des Spiegels 6 wird das Kronenradsegment 5 und damit über den Drehkörper q. der hintere Bl.endenring 3 gedreht, wobei sich aus der jeweiligen Stellung des vorderen Blendenringes i das Maß der Abblendung ergibt. Umgekehrt verdreht sich beim Senken .des Spiegels 6 der hintere Blendenring 3 so zu dem vorderen Blendenring i, bis er an einem zwischen beiden Blendenringen angebrachten Anschlag einen Halt findet, wobei wieder eine volle Öffnung Blende erreicht wird. Will man mit angehoUe- ." nem Spiegel die Kamera als gewöhnli'ie-: Sucherkamera benutzen, so läßt sich .lr,; Blende, wie es sonst bei anderen Kameras ali' -gemein üblich ist, durch den Blendeneinstellrin.g a bedienen. Wird nun durch Anziehen der Feststellschraube 7 der Drehkörper q. in der eingenommenen Lage festgehalten, so wird die Öffnungsweibe der Blende'beim Senken des Spiegels 6 beibehalten, so daß eine Kontrolle der Schärfentiefe auf der Mattscheibe möglich ist.Fig. Z shows the camera in section with a reduced aperture in reception position. The aperture setting ring z is, as usual, with the front one Aperture ring i connected. In contrast, the rear diaphragm ring 3 is not rigid as it is otherwise mounted in the lens mount, but it can be rotated in the lens mount and stands above the rotary body 4, on which a gear segment is worked out, in Connection with the crown gear segment 5. When the mirror 6 is lifted, the crown gear segment 5 and thus over the rotating body q. the rear aperture end ring 3 rotated, whereby from the respective position of the front aperture ring i the amount of glare results. Conversely, when lowering the mirror 6, the rear aperture ring rotates 3 so to the front aperture ring i, until he gets to one between the two Aperture rings attached stop finds a hold, again a full opening Aperture is reached. If you want to look at the camera as usual with a mirror: Use the viewfinder camera so .lr ,; Aperture, as is usually the case with other cameras ali '- it is common practice to operate through the aperture setting ring. Will now through Tightening the locking screw 7 of the rotating body q. held in the assumed position, so the opening of the diaphragm is retained when the mirror 6 is lowered, see above that a control of the depth of field on the focusing screen is possible.
Gegenüber dem Bekannten ergeben sich u. a. folgende Vorteile: Die zur Blendenverstellung erforderlichen Teile liegen im Inneren des Kameragehäuses und sind daher vor Beschädigungen geschützt. Die Kontrolle der Schärfentiefe ist auf der Mattscheibe im Bedarfsfalle möglich. Soll die Kamera z. B. zu Sportaufnahmen als gewöhnliche Sucherkamera verwendet werden, so genügt das Anheben des Spiegels, um die Mechanik, die das selbsttätige Abblenden bewirkt, außer Betrieb zu setzen. Der Anbringung -eines Schlitzverschlusses, der bei Reflexkameras am zweckmäßigsten unmittelbar vor dem Schichtträger läuft, stehen keine Schwierigkeiten entgegen. Die Verwendung von Wechselobjektiven ist möglich. Anwendungsgebiete der Erfindung sind sowohl Reflexkameras für Einzelaufnahmen als ,@lfch solche für Reihenaufnahmen.Compared to the known, there are, among other things, the following advantages: The The parts required for adjusting the aperture are located inside the camera housing and are therefore protected from damage. The control of the depth of field is possible on the ground glass if necessary. Should the camera z. B. for sports recordings are used as an ordinary viewfinder camera, it is sufficient to lift the mirror, to put the mechanism that causes the automatic dimming out of operation. The attachment of a focal plane shutter, which is most useful for reflex cameras runs immediately in front of the substrate, there are no difficulties. The use of interchangeable lenses is possible. Fields of application of the invention are both reflex cameras for single shots as well as those for continuous shots.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937P0076176 DE688159C (en) | 1937-11-03 | 1937-11-03 | Reflex camera with aperture preselection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937P0076176 DE688159C (en) | 1937-11-03 | 1937-11-03 | Reflex camera with aperture preselection |
Publications (1)
Publication Number | Publication Date |
---|---|
DE688159C true DE688159C (en) | 1940-02-14 |
Family
ID=7392901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1937P0076176 Expired DE688159C (en) | 1937-11-03 | 1937-11-03 | Reflex camera with aperture preselection |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE688159C (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE840347C (en) * | 1950-04-01 | 1952-06-05 | Karl Dipl-Ing Hetfleisch | Shutter or drive release for photo and film cameras |
DE1017908B (en) * | 1953-04-11 | 1957-10-17 | Isco Optische Werke Ges Mit Be | Device for the automatic adjustment of a lens aperture |
DE1047010B (en) * | 1954-09-08 | 1958-12-18 | Rodenstock Optik G | Lens aperture in cameras for taking continuous pictures |
DE972752C (en) * | 1952-08-28 | 1959-09-17 | Schneider Co Optische Werke | Frame for photographic lenses with device for reducing the aperture from the full to a preselected opening |
DE972973C (en) * | 1950-05-22 | 1959-11-12 | Zeiss Ikon Ag | One-eyed mirror camera |
DE1129046B (en) * | 1956-01-28 | 1962-05-03 | Rodenstock Optik G | Preselection aperture for lenses |
DE1156645B (en) * | 1959-03-30 | 1963-10-31 | Naoyuki Chara | Central lock for single-lens reflex cameras |
DE1187919B (en) * | 1955-07-30 | 1965-02-25 | Voigtlaender Ag | Photographic camera with a light sensitive cell |
DE1219790B (en) * | 1956-06-23 | 1966-06-23 | Zeiss Ikon Ag | Lens shutter with built-in iris diaphragm |
DE1248467B (en) * | 1962-12-19 | 1967-08-24 | Freiberger Praez Smechanik Veb | Single-lens reflex camera with interchangeable lens and aperture pre-selection device |
-
1937
- 1937-11-03 DE DE1937P0076176 patent/DE688159C/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE840347C (en) * | 1950-04-01 | 1952-06-05 | Karl Dipl-Ing Hetfleisch | Shutter or drive release for photo and film cameras |
DE972973C (en) * | 1950-05-22 | 1959-11-12 | Zeiss Ikon Ag | One-eyed mirror camera |
DE972752C (en) * | 1952-08-28 | 1959-09-17 | Schneider Co Optische Werke | Frame for photographic lenses with device for reducing the aperture from the full to a preselected opening |
DE1017908B (en) * | 1953-04-11 | 1957-10-17 | Isco Optische Werke Ges Mit Be | Device for the automatic adjustment of a lens aperture |
DE1047010B (en) * | 1954-09-08 | 1958-12-18 | Rodenstock Optik G | Lens aperture in cameras for taking continuous pictures |
DE1187919B (en) * | 1955-07-30 | 1965-02-25 | Voigtlaender Ag | Photographic camera with a light sensitive cell |
DE1129046B (en) * | 1956-01-28 | 1962-05-03 | Rodenstock Optik G | Preselection aperture for lenses |
DE1219790B (en) * | 1956-06-23 | 1966-06-23 | Zeiss Ikon Ag | Lens shutter with built-in iris diaphragm |
DE1156645B (en) * | 1959-03-30 | 1963-10-31 | Naoyuki Chara | Central lock for single-lens reflex cameras |
DE1248467B (en) * | 1962-12-19 | 1967-08-24 | Freiberger Praez Smechanik Veb | Single-lens reflex camera with interchangeable lens and aperture pre-selection device |
DE1248467C2 (en) * | 1962-12-19 | 1974-11-21 | Freiberger Praez Smechanik Veb | Single-lens reflex camera with interchangeable lens and aperture pre-selection device |
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