CH230106A - Device for controlling the image of a reflex photographic or cinematographic camera. - Google Patents

Device for controlling the image of a reflex photographic or cinematographic camera.

Info

Publication number
CH230106A
CH230106A CH230106DA CH230106A CH 230106 A CH230106 A CH 230106A CH 230106D A CH230106D A CH 230106DA CH 230106 A CH230106 A CH 230106A
Authority
CH
Switzerland
Prior art keywords
image
reflex
controlling
eyepiece
cinematographic camera
Prior art date
Application number
Other languages
French (fr)
Inventor
Boolsky-Bogopolsky Raphael
Original Assignee
Boolsky Bogopolsky Raphael
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 Boolsky Bogopolsky Raphael filed Critical Boolsky Bogopolsky Raphael
Publication of CH230106A publication Critical patent/CH230106A/en

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B19/00Cameras
    • G03B19/02Still-picture cameras
    • G03B19/12Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B13/00Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02Viewfinders
    • G03B13/06Viewfinders with lenses with or without reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)
  • Mushroom Cultivation (AREA)

Description

Dispositif de contröle de 1'image d'appareil photographique ou einematographique ressege. Lobjet de la presente invention est un dispositif de contröle de 1'image d'appareil photographique ou cinematographique reflexe, comportant une loupe et un oculaire pour 1'examen de 1'image reflexe, caracterise en ce que ces derniers sont disposes et etablis de facon ä permettre la vision simultanee de tout 1e champ de 1'image reflexe ä travers 1'oculaire et la loupe, et de facon que pour une longueur focale de 1'objectif normale, c'est- ä,-dire peu differente de la diagonale du for- mat de 1'image reflexe, 1'image reflexe du Sujet soit vue sous un angle peu different de 1'angle de vision directe du Sujet ä 1' -il nu. Device for controlling the image of a photographic or cinematographic camera. The object of the present invention is a device for controlling the image of a reflex photographic or cinematographic camera, comprising a magnifying glass and an eyepiece for examining the reflex image, characterized in that the latter are arranged and established in such a way to allow the simultaneous vision of the entire field of the reflex image through the eyepiece and the magnifying glass, and so that for a focal length of the normal objective, that is to say little different from the diagonal of the format of the reflex image, the reflex image of the Subject is seen at an angle not very different from the angle of direct vision of the Subject with the naked eye.

11 est evident que 1e rapport de grandeur de 1'image reflexe vue ä travers 1e dispositif de contröle variera proportionellement au rap- port des longueurs focales des objectifs utilises, lesdits objectifs pouvant etre egalement des t616-objectifs ou des Brands angulaires. Le dispositif de contröle peut etre utilise avec n'importe quel objectif, 1'un de ses avantages etant de restituer les conditions de vision nor male ä 1'oeil nu pour la focale normale. It is obvious that the ratio of magnitude of the reflex image seen through the control device will vary in proportion to the ratio of the focal lengths of the lenses used, said lenses also being able to be telephoto lenses or angle lenses. The control device can be used with any objective, one of its advantages being to restore normal vision conditions to the naked eye for the normal focal length.

Le dessin represente de facon schematique et ä titre d'exemple explicatif une forme d'exe- cution du dispositif suivant 1'invention. The drawing represents schematically and by way of explanatory example an embodiment of the device according to the invention.

Dans 1e dessin, 1 est un objectif de 50 mm. de foyer et 2 1e miroir reflexe. 3 designe 1e plan oiz se forme 1'image, par exemple de 24 X 36 mm et dans lequel peut etre disposee une surface depolie. La loupe 4, d'un foyer de 60 mm, assure 1'eclairement uniforme du champ de 1'oculaire par 1'objectif en eliminant 1'image de sa pupille arriere, c'est-ä-dire en lui donnant une grandeur apparente plus Brande que la grandeur apparente du Sujet dopt 1'image se forme dans 1e plan 3. Par exemple, 1e rayon 8 semble pour 1'ü-,il parvenir de 8' apres son passage dans 1'oculaire 6. L'oculaire 6, d'un foyer de 60 mm, permet de voir claire- ment en 7, dan? toute son etendue, et sous un angle peu different de 1'angle de vision ä 1'aeil nu, l'image virtuelle 5 formee par la loupe 4. Lorsque l'image de l'objectif se forme en 3 sur un dépoli, une grande partie des rayons passe sans variation importante de leur direc tion, et les conditions de vision de l'image restent sensiblement les mêmes. In the drawing, 1 is a 50mm lens. of focus and 2 1st reflex mirror. 3 designates the plane where the image is formed, for example 24×36 mm and in which a frosted surface can be arranged. The magnifying glass 4, with a focus of 60 mm, ensures the uniform illumination of the field of the eyepiece by the objective by eliminating the image of its rear pupil, that is to say by giving it an apparent size greater than the apparent size of the Subject adopts the image is formed in the plane 3. For example, the ray 8 seems to reach 8' after passing through the eyepiece 6. The eyepiece 6 , with a focal length of 60 mm, makes it possible to see clearly in 7, dan? to its full extent, and at an angle not very different from the viewing angle with the naked eye, the virtual image 5 formed by the magnifying glass 4. When the image of the objective is formed at 3 on a ground glass, a large part of the rays pass without significant variation in their direction, and the viewing conditions of the image remain substantially the same.

Claims (1)

REVENDICATION Dispositif de contrôle de l'image d'appareil photographique ou cinématographique réflexe, comportant une loupe et un oculaire pour l'examen de l'image réflexe, caractérisé en ce que ces derniers sont établis et disposés de façon à permettre la vision simultanée de tout le champ de l'image réflexe à travers l'oculaire et la loupe, et de façon que pour une longueur focale normale de l'objectif, c'est- à-dire peu différente de la diagonale du for mat de l'image réflexe, l'image réflexe du sujet soit vue sous un angle peu différent de l'angle de vision directe du sujet à l'ceil nu.CLAIM Device for controlling the image of a reflex photographic or cinematographic camera, comprising a magnifying glass and an eyepiece for examining the reflex image, characterized in that the latter are established and arranged so as to allow the simultaneous vision of the whole field of the reflex image through the eyepiece and the magnifying glass, and so that for a normal focal length of the objective, that is to say little different from the diagonal of the format of the image reflex, the reflex image of the subject is seen at an angle little different from the angle of direct vision of the subject with the naked eye.
CH230106D 1943-03-06 1942-09-02 Device for controlling the image of a reflex photographic or cinematographic camera. CH230106A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH230106T 1943-03-06

Publications (1)

Publication Number Publication Date
CH230106A true CH230106A (en) 1943-12-15

Family

ID=4456443

Family Applications (1)

Application Number Title Priority Date Filing Date
CH230106D CH230106A (en) 1943-03-06 1942-09-02 Device for controlling the image of a reflex photographic or cinematographic camera.

Country Status (1)

Country Link
CH (1) CH230106A (en)

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