DE674317C - Mirror adjustment viewfinder for photographic and cinematographic cameras - Google Patents

Mirror adjustment viewfinder for photographic and cinematographic cameras

Info

Publication number
DE674317C
DE674317C DEM137270D DEM0137270D DE674317C DE 674317 C DE674317 C DE 674317C DE M137270 D DEM137270 D DE M137270D DE M0137270 D DEM0137270 D DE M0137270D DE 674317 C DE674317 C DE 674317C
Authority
DE
Germany
Prior art keywords
photographic
mirror adjustment
mirror
cinematographic cameras
viewfinder
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
Application number
DEM137270D
Other languages
German (de)
Inventor
Oskar Mikut
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DEM137270D priority Critical patent/DE674317C/en
Application granted granted Critical
Publication of DE674317C publication Critical patent/DE674317C/en
Expired legal-status Critical Current

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)
  • Studio Devices (AREA)

Description

Spiegeleinstellsucher für photographische und kinematographische Kameras Es ist bekannt, daß bei Apparaten, die die Bildbeobachtung durch Spiegeleinrichtuaigen mit gesondertem Objektiv und gestonderter Kammer gewährleisten, der zwischen dem Aufnahmeobjektiv und dem BildbeobacUtungsobjektiv liegende Abstand bei Nahaufnahmen eine Verschiebung des Bildausschnittes gegenüber der Unendlichkeitsaufnahme zur Folge hat. Diese Parallaxe im Bildausschnitt läßt sich auf verschiedenen Wegen beseitigen, von denen eine Anzahl bereits bekannt ist.Mirror adjustment viewfinder for photographic and cinematographic cameras It is known that in apparatuses which monitor the image by mirror devices with a separate lens and separate chamber ensure that between the The distance between the recording lens and the image monitoring lens for close-ups a shift of the image section compared to the infinity recording for Consequence. This parallax in the image section can be eliminated in various ways, a number of which are already known.

Nach der Erfindung wird diese Paralluxe durch Parallelverschieben der Reflexionsfläche aus ihrer Grundstellung aufgehoben. Ein solches Verschieben ist an sich bekannt, jedoch zu einem anderen Zweck.According to the invention, this Paralluxe is by parallel displacement the reflection surface is lifted from its basic position. Such a shift is known per se, but for a different purpose.

Die Figur zeigt schematisch den Strahlengang des Aufnahmeobjektivs 01. mit seiner Bildebene B, und dem über, unter oder neben diesem liegenden Beobachtungsobjektiv 02 mit der Bildebene B2, die zugleich die BeobacUtungsmattscheibe des betreffenden Apparates darstellt. Aus der Zeichnung ist ersichtlich, daß die Brennweite 02 des Beobachtungsobjektivs kleiner ist als @iie von Die zu ihm gehörige Bildebene ist bei BZ ersichtlich. Bei unendlicher Einstellung wird die Mitte des Bildausschnittes durch: den Strahl AI, Ci, C2 gebildet, während bei Naheinstellung der Strahl zu A2, C2 , C2 umgelenkt werden muß, um immer den gleichen Bildmittelpunkt zu erreichen. Zu diesem Zweck muß der Spiegel S natürlich zusammen mit dem Objektiv nach S' verschoben werden, um dem Strahl A2, C2 -dieselbe Stellung zur Bildmitte wie dem Strahl A" Ci, C2 bei der Unendlichkeitseinstellung zu gewähren.The figure shows schematically the beam path of the recording lens 01 with its image plane B and the observation lens 02 above, below or next to it with the image plane B2, which at the same time represents the observation screen of the relevant apparatus. From the drawing it can be seen that the focal length 02 of the observation lens is smaller than @iie of The image plane belonging to it can be seen at BZ. With an infinite setting, the center of the image section is formed by: the beam AI, Ci, C2, while with a close-up setting the beam must be deflected to A2, C2, C2 in order to always reach the same image center. For this purpose the mirror S must of course be shifted together with the objective to S 'in order to allow the beam A2, C2 - the same position to the center of the image as the beam A "Ci, C2 at the infinity setting.

Die Erfindung hat den Vorteil, daß bei geschlossenem Gehäuse wenig Bauelemente zur Erreichung des verlangten Zieles erforderlich sind. Nach der Erfindung ist @es gleichgültig, an welcher Art von Apparaten die in der Erfindung niedergelegte Neuerung Anwendung findet. Die Erfindung kann auch bei Apparaten für Farbenphotographie angeordnet werden, ferner kann die Reflexionseinrichtung oder können Teile derselben auswechselbar gestaltet werden.The invention has the advantage that little when the housing is closed Components are required to achieve the required goal. According to the invention it does not matter what kind of apparatus the device laid down in the invention is used on Innovation applies. The invention can also be applied to color photography apparatus can be arranged, furthermore, the reflection device or parts thereof be designed interchangeably.

Claims (1)

PATENTANSPRÜCHE: i. Spiegeleinstellsucher für photographische und kinematographische Kameras, dadurch gekennzeichnet, daß die Spiegelfläche zum Zwecke des Parallaxenausgleiches in an sich bekannter Weise parallel mit sich verschiebbar ,angebracht ist. a. 'Spieg-elsucher nach Anspruch i, dadurch gekennzeichnet, daß derselbe oder Teile desselben auswechselbar an dem photographischen Apparat .angebracht ist bzw. sind.PATENT CLAIMS: i. Mirror adjustment viewfinder for photographic and cinematographic cameras, characterized in that the mirror surface for the purpose of the parallax compensation can be displaced in a manner known per se in parallel with itself , is appropriate. a. Mirror seeker according to claim i, characterized in that the same or parts thereof interchangeably attached to the photographic apparatus is or are.
DEM137270D 1937-02-24 1937-02-24 Mirror adjustment viewfinder for photographic and cinematographic cameras Expired DE674317C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM137270D DE674317C (en) 1937-02-24 1937-02-24 Mirror adjustment viewfinder for photographic and cinematographic cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM137270D DE674317C (en) 1937-02-24 1937-02-24 Mirror adjustment viewfinder for photographic and cinematographic cameras

Publications (1)

Publication Number Publication Date
DE674317C true DE674317C (en) 1939-04-12

Family

ID=7333768

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM137270D Expired DE674317C (en) 1937-02-24 1937-02-24 Mirror adjustment viewfinder for photographic and cinematographic cameras

Country Status (1)

Country Link
DE (1) DE674317C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204468A1 (en) * 1991-02-19 1992-08-20 Asahi Optical Co Ltd DEVICE FOR PARALLAX AND / OR DIOPTRIAL CORRECTION FOR A CAMERA

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204468A1 (en) * 1991-02-19 1992-08-20 Asahi Optical Co Ltd DEVICE FOR PARALLAX AND / OR DIOPTRIAL CORRECTION FOR A CAMERA
US5345287A (en) * 1991-02-19 1994-09-06 Asahi Kogaku Kogyo Kabushiki Kaisha Apparatus for correcting parallax and/or diopter of camera

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