DE556783C - Device for reflex cameras - Google Patents
Device for reflex camerasInfo
- Publication number
- DE556783C DE556783C DEST48092D DEST048092D DE556783C DE 556783 C DE556783 C DE 556783C DE ST48092 D DEST48092 D DE ST48092D DE ST048092 D DEST048092 D DE ST048092D DE 556783 C DE556783 C DE 556783C
- Authority
- DE
- Germany
- Prior art keywords
- image
- mirror
- reflex cameras
- focusing screen
- vertical
- 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)
- Stereoscopic And Panoramic Photography (AREA)
- Overhead Projectors And Projection Screens (AREA)
Description
556 78β556 78β
Die Erfindung betrifft eine Einrichtung, dieThe invention relates to a device that
das auf die Mattscheibe projizierte horizontale und seitenverkehrte Bild in ein vertikales, aufrechtes und seitenrichtiges Bild verwandein soll.the horizontal and reversed image projected on the screen into a vertical, upright and laterally correct image should be transformed.
Bekannt sind zwar schon Vorrichtungen zur Herstellung eines vertikalen, auf dem Kopf stehenden Bildes (Spiegel steht unter 45° zur Mattscheibenebene) und eines vertikalen und aufrechten Bildes (zwei Spiegel, gegeneinandergerichtet im spitzen Winkel); jedoch haftet diesen Einrichtungen der Mangel eines seitenverkehrten Bildes an.Devices for producing a vertical, on the head are already known standing image (mirror is at 45 ° to the ground plane) and a vertical one and upright image (two mirrors facing each other at an acute angle); However is liable to these institutions the lack of a reversed image.
Das Problem war die Wendung des (ge-The problem was the turn of the (ge
•5 sehenen) Mattscheibenbildes um i8o° um seine vertikale Achse.• 5) focusing screen image by 180 ° its vertical axis.
Die Lösung ist auf der Zeichnung in Abb. 1 im Schnitt und in Abb. 2 in der Aufsicht dargestellt. The solution is shown in the drawing in Fig. 1 in section and in Fig. 2 in plan view.
Das auf die Mattscheibe α der Spiegelreflexkamera projizierte Bild wird, vom Spiegel b (bekannte Anordnung) reflektiert, in den Winkelspiegel c geworfen. Die vertikale Achse dieses Winkelspiegels fällt mit der Achse des Bildes« zusammen, und seine beiden Schenkelseiten stehen unter einem Winkel von 900 zueinander. Dabei werden die Lichtstrahlen der rechten Seite auf die linke Seite geworfen und umgekehrt und durch geeignete Schräglage des Winkelspiegels auf den Augenpunkt e. The image projected onto the focusing screen α of the reflex camera is reflected by the mirror b (known arrangement) and thrown into the corner mirror c. The vertical axis of this corner mirror coincides with the axis of the picture, and its two sides are at an angle of 90 ° to each other. The light rays from the right side are thrown onto the left side and vice versa and, through a suitable inclination of the corner mirror, onto the eye point e.
Das in der Fläche« liegende Mattscheibenbild erscheint nun dem Aagee als in der Fläche d stehend und um i8o° um seine vertikale Achse gedreht. The screen image lying in the plane now appears to the Aagee as standing in the plane d and rotated by 180 ° about its vertical axis.
Die beschriebene Vorrichtung ist für alle Spiegelkameras anzuwenden, bei denen die Mattscheibe für den Gebrauch normalerweise horizontal angeordnet ist, bei denen jedoch ein vertikales Mattscheibenbild erwünscht ist.The device described can be used for all mirror cameras in which the Focusing screen for use is normally arranged horizontally, however a vertical focusing screen image is desired.
Der wesentliche Fortschritt gegenüber dem Bekannten liegt in der naturgetreuen Wiedergabe des Mattscheibenbildes in richtiger Lage, das als ein Ausschnitt aus der zu photographierenden Landschaft erscheint. Die Vorrichtung verbindet die Vorteile des viel verwendeten Rahmensuchers mit den Vorteilen der Mattscheibeneinstellung und dient zur Erleichterung von Aufnahmen in Augenhöhe und zur besonders raschen Erfassung von schnell beweglichen Objekten (Sportaufnahmen). The essential progress compared to the familiar lies in the lifelike reproduction the focusing screen image in the correct position, as a section from the one to be photographed Landscape appears. The device combines the advantages of the much used Frame finder with the advantages of the focusing screen setting and is used for relief of recordings at eye level and for the particularly rapid detection of fast-moving objects (sports recordings).
Die Anordnung des Spiegels b ist zur Aufrichtung des Bildes nötig und bildet mit dem Winkelspiegele die Einheit der Erfindung.The arrangement of the mirror b is necessary for erecting the image and forms the unit of the invention with the corner mirror.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST48092D DE556783C (en) | Device for reflex cameras |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST48092D DE556783C (en) | Device for reflex cameras |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE556783C true DE556783C (en) | 1933-01-28 |
Family
ID=7465559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEST48092D Expired DE556783C (en) | Device for reflex cameras |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE556783C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE741844C (en) * | 1939-05-05 | 1943-11-18 | Arno Rothe | Reflex camera with two mirrors set at an angle to each other |
| US2508864A (en) * | 1946-11-22 | 1950-05-23 | Lane Erik Lennart | Picture and motif finder |
| US2512772A (en) * | 1945-10-30 | 1950-06-27 | John A Haeseler | Reflex camera having reflecting finder system |
| DE758263C (en) * | 1940-07-05 | 1952-06-16 | Rollei Werke Franke Heidecke | Reflex camera or camera with mirror viewfinder |
| US2622497A (en) * | 1948-07-03 | 1952-12-23 | Pignons Sa | Reflex sighting device, including folding cover sections |
-
0
- DE DEST48092D patent/DE556783C/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE741844C (en) * | 1939-05-05 | 1943-11-18 | Arno Rothe | Reflex camera with two mirrors set at an angle to each other |
| DE758263C (en) * | 1940-07-05 | 1952-06-16 | Rollei Werke Franke Heidecke | Reflex camera or camera with mirror viewfinder |
| US2512772A (en) * | 1945-10-30 | 1950-06-27 | John A Haeseler | Reflex camera having reflecting finder system |
| US2508864A (en) * | 1946-11-22 | 1950-05-23 | Lane Erik Lennart | Picture and motif finder |
| US2622497A (en) * | 1948-07-03 | 1952-12-23 | Pignons Sa | Reflex sighting device, including folding cover sections |
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