DE641050C - Photographic camera with basic rangefinder - Google Patents
Photographic camera with basic rangefinderInfo
- Publication number
- DE641050C DE641050C DEZ21107D DEZ0021107D DE641050C DE 641050 C DE641050 C DE 641050C DE Z21107 D DEZ21107 D DE Z21107D DE Z0021107 D DEZ0021107 D DE Z0021107D DE 641050 C DE641050 C DE 641050C
- Authority
- DE
- Germany
- Prior art keywords
- movement
- lens
- lever
- drive
- screw thread
- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/18—Focusing aids
- G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Viewfinders (AREA)
Description
ι. Photographische Kamera mit Basisentfernungsmesser, bei dem die die Meßstrahlen ablenkenden Glaskeile, welche gegenläufig zueinander bewegt werden, ihren Antrieb von der Schneckengangfassung des Objektivs erhalten, dadurch gekennzeichnet, daß der von der Schnekkengangfassung des Objektivs nach den Keilen des Entfernungsmessers übertragenen linearen Bewegung eine durch eine entsprechend gestaltete Kurve (7) gesteuerte zusätzliche Bewegung aufgezwungen wird.ι. Photographic camera with basic rangefinder, in which the glass wedges deflecting the measuring beams, which are moved in opposite directions to one another, get their drive from the screw thread mount of the lens, characterized in that that of the worm gear mount of the lens after the wedges of the rangefinder transmitted linear movement through a correspondingly designed curve (7) controlled additional movement is imposed.
2. Photographische Kamera mit Basisentfernungsmesser nach Anspruch 1, dadurch gekennzeichnet, daß eine feststehende Kurve (7J vorgesehen ist, welche einen Hebel (6) beeinflußt, der den beiden die Keile (10 und 11) antreibenden Organen (Zahnstangen) (8 und 9) eine dem Auszug des Objektivs entsprechende Ausgleichsbewegung erteilt.2. A photographic camera with a base rangefinder according to claim 1, characterized characterized in that a fixed curve (7J is provided which influences a lever (6) which drives the two wedges (10 and 11) Organs (racks) (8 and 9) granted a compensation movement corresponding to the extension of the lens.
3. Photographische Kamera mit Basisentfernungsmesser nach Anspruch 2, dadurch gekennzeichnet, daß der von der Kurve (7) gesteuerte Hebel (6) drehbar auf einem Schlitten (5) angeordnet ist, welcher von den Schneckengangstutzen (1) seinen Antrieb erhält.3. A photographic camera with a basic rangefinder according to claim 2, characterized in that characterized in that the lever (6) controlled by the cam (7) is rotatably arranged on a slide (5), which receives its drive from the screw thread connector (1).
4. Photographische Kamera mit Basisenti'ernungsmesser nach Anspruch 3, dadurch gekennzeichnet, daß der gegenläufige Antrieb der Glaskeile (10 und 11) durch je eine ober- und unterhalb der Glaskeile angeordnete Zahnstange (8 und 9) erfolgt, die beide durch Federn zusammengehalten werden.4. Photographic camera with basic range finder according to claim 3, characterized in that the counter-rotating drive of the glass wedges (10 and 11) by a rack arranged above and below the glass wedges (8 and 9), both of which are held together by springs.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (1)
Nach der Erfindung wird durch Einschalten eines solchen Ausgleichs der von der Schneckengangfassung des Objektivs nach den Keilen des Entfernungsmessers übertragenen linearen Bewegung eine durch eine entsprechend gestaltete Kurve gesteuerte zusätzliche Bewegung aufgezwungen. Dadurch wird die Objektivbewegung und die Keilbewegung auf eine für beide Teile gleichmäßig bestimmte Bewegung gebracht.The subject matter of the invention relates to a photographic camera with a basic range finder in which the optical means deflecting the measuring beams are driven by the screw thread mount of the objective. Since the lens advance for focusing is carried out according to a different mathematical function, such as the movement of a pair of rotating or swinging wedges necessary to measure the distance, it is not possible to combine the two movements without using a special compensating element.
According to the invention, by switching on such a compensation of the linear movement transmitted from the screw thread mount of the objective to the wedges of the rangefinder, an additional movement controlled by a correspondingly designed curve is imposed. As a result, the movement of the lens and the movement of the wedge are brought to a movement that is equally determined for both parts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ21107D DE641050C (en) | Photographic camera with basic rangefinder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ21107D DE641050C (en) | Photographic camera with basic rangefinder |
Publications (1)
Publication Number | Publication Date |
---|---|
DE641050C true DE641050C (en) | 1937-01-18 |
Family
ID=7625286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEZ21107D Expired DE641050C (en) | Photographic camera with basic rangefinder |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE641050C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2655832A (en) * | 1951-01-06 | 1953-10-20 | Eastman Kodak Co | Range finder adjusting mechanism |
US2943549A (en) * | 1952-11-01 | 1960-07-05 | Graflex Inc | Photographic camera |
-
0
- DE DEZ21107D patent/DE641050C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2655832A (en) * | 1951-01-06 | 1953-10-20 | Eastman Kodak Co | Range finder adjusting mechanism |
US2943549A (en) * | 1952-11-01 | 1960-07-05 | Graflex Inc | Photographic camera |
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