DE718203C - Finder for photographic apparatus combined with the range finder - Google Patents
Finder for photographic apparatus combined with the range finderInfo
- Publication number
- DE718203C DE718203C DEL98140D DEL0098140D DE718203C DE 718203 C DE718203 C DE 718203C DE L98140 D DEL98140 D DE L98140D DE L0098140 D DEL0098140 D DE L0098140D DE 718203 C DE718203 C DE 718203C
- Authority
- DE
- Germany
- Prior art keywords
- viewfinder
- prism
- finder
- frame
- rangefinder
- 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
- G03B13/02—Viewfinders
- G03B13/16—Viewfinders combined with focusing aids
-
- 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
Mit dem Entfernungsmesser vereinigter Sucher für photographische Apparate Die Erfindung geht aus von Entfernungsmessern, die mit einem Sucher vereinigt sind. Es ist bekannt, de das Sucherbildfeld begrenzenden-Rahmen in den Sucherstrahlengang einzuspiegeln. Bei der Vereinigung von Entfernungsmesser und Sucher erfolgt diese Einspiegelung durch den Strahlenteilungskörper des Entfernungsmessers.Finder for photographic apparatus combined with the range finder The invention is based on rangefinders that are combined with a viewfinder. It is known that the frame delimiting the viewfinder field of view is in the viewfinder beam path to reflect. This occurs when the rangefinder and viewfinder are combined Reflection through the beam splitter body of the range finder.
Die Erfindung besteht in der Verbindung einer besonderen Prismenkombination mit einer BifokaEinse. Die Einspiegelung des die bildfeldbegrenzenden Rahmen abbildenden Strahlenganges in die Basis des Entfernungsmessers wird dabei durch eine Prismenkombination bewirkt, die sich aus einem größeren rechtwinkligen 45°-Prisma und einem zentralen, auf dessen Hypotenusenfläche aufgekitteten zweiten kleineren ,rechtwinkligen 45" Prisma zusammensetzt. Hierdurch entsteht an den Teilen der Hypotenusenfläche des größeren Prismas, die die Hypotenusenfläche des kleineren Prismas überragen, für den die bildfeldbegrenzenden Rahmen abbildenden Strahlengang Totalreflexion, während durch die zentral aus den beiden Prismenteilen entstehenden planparallelen Platten der Entfernungsmesserstrahlengang ungehindert hindurchtreten kann. An das größere Prisma ist augenseitig die Bifokallinse angefügt, deren ringförmiger Teil zur Abbildung der Bildfeldbegrenzungsrahmen dient, während der zentrale Teil für den Durchtritt der Entfernungsmesserstrahlen plan gehalten ist.The invention consists in the connection of a special combination of prisms with a bifoca one. The reflection of the frame that delimits the image field The beam path in the base of the rangefinder is done by a combination of prisms caused, which consists of a larger right-angled 45 ° prism and a central, second smaller, rectangular 45 "cemented onto its hypotenuse surface Composed of prism. This creates on parts of the hypotenuse surface of the larger prism, which protrude beyond the hypotenuse of the smaller prism, for the beam path depicting the frame delimiting the image field total reflection, while due to the plane-parallel plates formed centrally from the two prism parts the rangefinder beam path can pass through unhindered. The bigger one The bifocal lens is attached to the prism and its ring-shaped part is used for imaging the frame of view is used, while the central part is for the passage the rangefinder beam is kept flat.
Eine derartige Einrichtung läßt sich im Gegensatz zu bekanntgewordenen älteren Einrichtungen in der Fabrikation leicht justieren.Such a device, in contrast to what has become known Easily adjust older facilities in production.
Weitere Einzelheiten der Erfindung seien an Hand der Zeichnung, die beispielsweise eine Ausführungsform zeigt, näher erläutert.Further details of the invention are based on the drawing, which for example shows an embodiment, explained in more detail.
Vor dem aus zwei mit teilverspiegelter Kittfläche verbundenen Prismen i und z bestehenden Strahlenteilungskörper des Entfernungsmessers ist der aus der Negativlinse 3 und der Positivlinse 4 bestehende Galileisucher angeordnet. Der die von dem bildbegrenzenden Rahmen 5 kommenden Strahlen ablenkende Körper besteht aus den beiden miteinander verkitteten Prismen 6 und 7 und der Bifokällinse 8, die zusammen im seitlichen Strahlengang des Entfernungsmessers angeordnet sind. Zur scharfen Ausblendung der den bildbegrenzenden Rahmen 5 abbildenden Strahlen ist zwischen dem Prismenkörper 6, 7 und dem Strahlenteilungskörper i, z eine Blende 9 angeordnet. Der Galileisucher ist schwenkbar gelagert, so daß er als Winkelsucher Verwendung finden kann, der Übersichtlichkeit halber sind aber die mechanischen Bauteile hierfür nicht dargestellt. Durch die Anordnung des Fernrohres vor dem Strahlenteilungskörper entsteht eine künstliche Vorverlegung der Austrittspupille auch für den Fall, daß die Kamera eine größere Bautiefe besitzt, insbesondere wenn Verschlußteile, Rückwickler usw. zwischen Entfernungsmesser und Kamerarückseite liegen. Der Bildbegrenzungsrahmen 5 erscheint im Sucherfeld durch die Verkleinerung schärfer und kontrastreicher, so daß die eingespiegelten Bildbegrenzungslinien auf beschattetem Hintergrund besser sichtbar werden oder aber die Teilverspiegelung geringer gewählt werden kann, wodurch sich zugleich die Lichtstärke des Systems erhöht.In front of the two prisms connected with a partially mirrored putty surface i and z existing beam splitting body of the rangefinder is the one from the Negative lens 3 and the positive lens 4 existing Galileo viewfinder arranged. The who from the image-delimiting frame 5 coming rays deflecting body consists of the two prisms 6 and 7 cemented together and the bifocal lens 8, which together are arranged in the lateral beam path of the rangefinder. To the sharp Suppression of the image-delimiting frame 5 imaging rays is between the prism body 6, 7 and the beam splitting body i, z a diaphragm 9 is arranged. The Galileo viewfinder is pivoted so that it can be used as an angle viewfinder can find, but for the sake of clarity, the mechanical components are for this not shown. By arranging the telescope in front of the beam splitter body there is an artificial advancement of the exit pupil even in the event that the camera has a greater overall depth, especially when locking parts, rewinders etc. between the rangefinder and the back of the camera. The picture bounding box 5 appears sharper and richer in contrast in the viewfinder due to the reduction, so that the reflected image boundary lines on a shaded background are better become visible or the partial mirroring can be chosen to be lower, whereby the light intensity of the system increases at the same time.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL98140D DE718203C (en) | 1939-06-04 | 1939-06-04 | Finder for photographic apparatus combined with the range finder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL98140D DE718203C (en) | 1939-06-04 | 1939-06-04 | Finder for photographic apparatus combined with the range finder |
Publications (1)
Publication Number | Publication Date |
---|---|
DE718203C true DE718203C (en) | 1942-04-09 |
Family
ID=7288770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL98140D Expired DE718203C (en) | 1939-06-04 | 1939-06-04 | Finder for photographic apparatus combined with the range finder |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE718203C (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE871244C (en) * | 1948-10-02 | 1953-03-19 | Kodak Ag | Mixed image rangefinder for photographic and cinematographic purposes |
DE915649C (en) * | 1948-10-02 | 1954-07-26 | Kodak Ag | Galilean finder for photographic cameras combined with a basic range finder |
DE1007612B (en) * | 1956-10-03 | 1957-05-02 | Braun Camera Werk | Rangefinder for photographic cameras |
DE1022901B (en) * | 1955-10-22 | 1958-01-16 | Zeiss Ikon Ag | Rangefinder |
DE968368C (en) * | 1953-12-04 | 1958-02-06 | Zeiss Ikon Dresden Veb | Bifocal lens |
DE972948C (en) * | 1949-09-28 | 1959-11-05 | Voigtlaender A G | Photographic rangefinder |
DE1118599B (en) * | 1955-01-26 | 1961-11-30 | Canon Camera Company Inc | Finder rangefinder for photographic cameras |
DE1145010B (en) * | 1956-12-20 | 1963-03-07 | Agfa Ag | Rangefinder |
DE976666C (en) * | 1948-10-02 | 1964-02-06 | Kodak Ag | Viewfinder for photographic cameras combined with the range finder |
-
1939
- 1939-06-04 DE DEL98140D patent/DE718203C/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE871244C (en) * | 1948-10-02 | 1953-03-19 | Kodak Ag | Mixed image rangefinder for photographic and cinematographic purposes |
DE915649C (en) * | 1948-10-02 | 1954-07-26 | Kodak Ag | Galilean finder for photographic cameras combined with a basic range finder |
DE976666C (en) * | 1948-10-02 | 1964-02-06 | Kodak Ag | Viewfinder for photographic cameras combined with the range finder |
DE972948C (en) * | 1949-09-28 | 1959-11-05 | Voigtlaender A G | Photographic rangefinder |
DE968368C (en) * | 1953-12-04 | 1958-02-06 | Zeiss Ikon Dresden Veb | Bifocal lens |
DE1118599B (en) * | 1955-01-26 | 1961-11-30 | Canon Camera Company Inc | Finder rangefinder for photographic cameras |
DE1022901B (en) * | 1955-10-22 | 1958-01-16 | Zeiss Ikon Ag | Rangefinder |
DE1007612B (en) * | 1956-10-03 | 1957-05-02 | Braun Camera Werk | Rangefinder for photographic cameras |
DE1145010B (en) * | 1956-12-20 | 1963-03-07 | Agfa Ag | Rangefinder |
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