DE628739C - Viewfinder for photographic cameras - Google Patents
Viewfinder for photographic camerasInfo
- Publication number
- DE628739C DE628739C DEL87225D DEL0087225D DE628739C DE 628739 C DE628739 C DE 628739C DE L87225 D DEL87225 D DE L87225D DE L0087225 D DEL0087225 D DE L0087225D DE 628739 C DE628739 C DE 628739C
- Authority
- DE
- Germany
- Prior art keywords
- viewfinder
- frame
- photographic cameras
- around
- viewing opening
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/14—Viewfinders
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
Sucher für photographische Kameras Die Erfindung bezieht _ sich auf einen Sucher für photographische und kinematographische Aufnahmeapparate, bei denen vor der Einblicksöffnung ein Bildfeldrahmen angeordnet ist. Zur Feststellung eines Bildausschnittes verwendet man -bereits derartige Durchsichtssucher.° So sind bereits Sucher bekannt, bei denen vor der Einblicksöffnung ein negatives optisches Element angebracht ist, welches eine halbdurchlässig versilberte Fläche besitzt, die einen um die Einblicksöffnung herum angeordneten Rahmen teilweise in das Auge des Beobachters so reflektiert, daß der Rahmen in großer-Entfernung zu liegen scheint. Diese Sucher haben den Nachteil, daß durch die halbdurchlässig versilberte Fläche das aufzunehmende Objekt, insbesondere bei geringer Beleuchtung im Bildfeld, nur noch schwach zu sehen ist und daß durch die halbdurchlässige Silberschicht die Herstellung des Suchers mit höheren Kosten verbunden ist. Diese Nachteile werden gemäß der Erfindung dadurch behoben, daß vor der Einblicksöffnung ein ganz oder annähernd undurchsichtiger gewölbter Spiegelrahmen vorgesehen ist, welcher dem Bildfeld des jeweils benutzten Objektivs angepaßt ist. In diesem Spiegelrahmen spiegelt `sich die Umgrenzung der Einblicksöffnung annähernd total, so daß dieselbe mit großer Helligke22 erkannt werden kann. Diese leichte Erkennbarkeit kann noch dadurch gesteigert werden, daß erfindungsgemäß die äußere Umgebung des Spiegelrahmens zum Teil oder ganz undurchsichtig gehalten wird.Viewfinder for photographic cameras The invention relates to a viewfinder for photographic and cinematographic recording apparatus in which an image field frame is arranged in front of the viewing opening. To determine a Image detail is already used - such see-through viewers. ° So are already Known viewfinder in which there is a negative optical element in front of the viewing opening is attached, which has a semi-permeable silver-plated surface that has a arranged around the viewing opening frame partially into the eye of the observer so reflected that the frame seems to be at a great distance. These seekers have the disadvantage that the semi-permeable silver-plated surface means that the Object can only be seen faintly, especially when there is little lighting in the field of view is and that through the semi-permeable silver layer the manufacture of the viewfinder is associated with higher costs. These disadvantages are thereby made according to the invention corrected that in front of the viewing opening a completely or almost opaque vaulted one Mirror frame is provided, which corresponds to the field of view of the lens used is adapted. The boundaries of the viewing opening are reflected in this mirror frame approximately total, so that it can be recognized with great brightness. These Ease of recognition can be further increased by the fact that, according to the invention, the outer environment of the mirror frame is kept partially or completely opaque.
Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, und zwar ist der Träger der Einblicksöffnung mit a bezeichnet, die Öffnung selbst mit c und die diese umgebende Umgrenzung mit d. Vor der Einblicksöffnung befindet sich in nicht großem Abstand der Spiegelrahmen f. Dieser umgibt das total durchsichtige Bildfeld e. Die undurchsichtige Umgebung des Spiegelrahmens ist mit b bezeichnet.In the drawing, an embodiment of the invention is shown, namely, the carrier of the viewing opening is denoted by a, the opening itself with c and the boundary surrounding it with d. Located in front of the viewing opening the mirror frame f. This surrounds the totally transparent Field of view e. The opaque area surrounding the mirror frame is denoted by b.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL87225D DE628739C (en) | Viewfinder for photographic cameras |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL87225D DE628739C (en) | Viewfinder for photographic cameras |
Publications (1)
Publication Number | Publication Date |
---|---|
DE628739C true DE628739C (en) | 1936-04-15 |
Family
ID=7286263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL87225D Expired DE628739C (en) | Viewfinder for photographic cameras |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE628739C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746974C (en) * | 1939-03-18 | 1944-09-01 | Kodak Ag | Galilean type viewfinder for photographic and cinematographic cameras |
DE972948C (en) * | 1949-09-28 | 1959-11-05 | Voigtlaender A G | Photographic rangefinder |
-
0
- DE DEL87225D patent/DE628739C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746974C (en) * | 1939-03-18 | 1944-09-01 | Kodak Ag | Galilean type viewfinder for photographic and cinematographic cameras |
DE972948C (en) * | 1949-09-28 | 1959-11-05 | Voigtlaender A G | Photographic rangefinder |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE628739C (en) | Viewfinder for photographic cameras | |
DE2305752A1 (en) | FINDER FOR SINGLE-EYE REFLECTIVE CAMERA WITH A DEVICE FOR REVISING EXPOSURE CONDUCTIVES | |
DE593891C (en) | Viewfinder for photographic and cinematographic apparatus | |
DE907245C (en) | Viewfinder for photographic cameras or the like. | |
DE680152C (en) | Viewfinder for photographic use | |
DE905573C (en) | Galilean type viewfinder for photographic and cinematographic cameras | |
DE650908C (en) | Optical viewfinder system | |
AT218853B (en) | Photographic or cinematographic camera with viewfinder and light meter | |
DE580249C (en) | Lens cap | |
DE652166C (en) | Viewfinder for cinematographic recording devices | |
DE927418C (en) | Galilean type mirror finder for photographic and cinematographic cameras | |
DE1004913B (en) | See-through viewer for photographic cameras | |
DE746974C (en) | Galilean type viewfinder for photographic and cinematographic cameras | |
AT147613B (en) | Process for making images of any size visible. | |
AT215796B (en) | Photographic viewfinder | |
DE439726C (en) | Device for the cinematographic recording of partial scenes to be combined into one image | |
DE1844211U (en) | ADJUSTMENT DISC FOR VIEWFINDER ARRANGEMENTS. | |
DE739786C (en) | Camera with setting viewfinder | |
DE327069C (en) | Device for viewing living images | |
DE601411C (en) | Camera micro attachment | |
DE484943C (en) | Process for producing high-intensity photographic images | |
DE649986C (en) | Device for photographic recording apparatus, in which the person to be photographed can observe himself in a mirror while taking the photograph | |
DE493647C (en) | Viewing device for motion recordings | |
DE877677C (en) | Film viewer for eight millimeter cine film recordings | |
DE931029C (en) | Galilean type viewfinder for photographic and cinematographic cameras |