DE746975C - Folding camera with electric light meter - Google Patents

Folding camera with electric light meter

Info

Publication number
DE746975C
DE746975C DEI67568D DEI0067568D DE746975C DE 746975 C DE746975 C DE 746975C DE I67568 D DEI67568 D DE I67568D DE I0067568 D DEI0067568 D DE I0067568D DE 746975 C DE746975 C DE 746975C
Authority
DE
Germany
Prior art keywords
electric light
light meter
folding camera
camera
bellows
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
DEI67568D
Other languages
German (de)
Inventor
Dr-Ing Alfred Lingg
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI67568D priority Critical patent/DE746975C/en
Application granted granted Critical
Publication of DE746975C publication Critical patent/DE746975C/en
Expired legal-status Critical Current

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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera

Description

Klappkamera mit elektrischem Belichtungsmesser Die Erfindung bezieht sich auf eine Klapp-1 ' mmera, bei der die lichtelektrische Zelle am Objektiv und das Galvanometer des Belichtungsmessers am Kameragehäuse angebracht isst: Bei einer Klappkamera dieser -Art ist es bekannt, die elektrische Verbindung zwischen der lichtelektrischen Zelle und .dem Galvanometer durch Drähte oder ganz dünne Blechstreifen herzustellen, .die an einer Innenwand des Balges befestigt oder zwischen den Gewebe des Balges. eingelagert sind. Bei län gerem Gebrauch der Klappkamera ergibt sich hierbei der Nachteil, daß durch das widerholte Auf- und Zusammenfalten des Balges beim Öffnen und Schließen der Kamera die Verbindungsmittel an den Knickstellen brüchig werden.Folding camera with electric exposure meter The invention relates to a folding 1 'mmera, in which the photoelectric cell is attached to the lens and the galvanometer of the exposure meter is attached to the camera housing: In a folding camera of this type, the electrical connection between the photoelectric cell is known and. manufacture the galvanometer by means of wires or very thin sheet metal strips,. which are attached to an inner wall of the bellows or between the fabric of the bellows. are stored. With longer use of the folding camera there is the disadvantage that the connecting means at the kinks are brittle due to the repeated unfolding and folding of the bellows when opening and closing the camera.

Nach der Erfindung wird eine dauerhafte elektrische Verbindung zwischen der Zelle und denn Galvanometer dadurch hergestellt, daß man die Wandung des Balges selbst ganz oder teilweise mit einer haucihdünnen Metallschicht überzieht, z. B. nach dem Schoopschen Metallspritzverfahren.According to the invention, a permanent electrical connection between the cell and the galvanometer produced by the fact that the wall of the bellows itself completely or partially covered with a very thin metal layer, e.g. B. according to the Schoop metal spraying process.

Die Verwendung eines derartigen Metall-Überzuges-als elektrische Leitung hat di.eVorteile, .daß er leicht hergestellt werden kann und sehr «lauerhaft ist. Wegen der äußerst geringen Dicke dieses überzuges treten in den Knickstellen im Material keine schädlichen Zug- und Druckkräfte auf, wodurch er nicht mehr brüchig wird. Um schädliche Reflexe im Inneren des Balges zu vermeiden, kann die Metallschicht natürlich .auch noch gebeizt oder lackiert werden.The use of such a metal coating as an electrical line has the advantages that it is easy to manufacture and that it is very tepid. Because of the extremely small thickness of this coating occur in the kinks in the Material does not have any harmful tensile or compressive forces, which means that it is no longer brittle will. In order to avoid harmful reflections inside the bellows, the metal layer Of course, it can also be stained or varnished.

Claims (2)

PATENTANSPRÜCHE: r. Klappkamera mit elektrischem Belichtungsmesser, bei .der das am Kameragehäuse befestigte Galvanometer und die am ` O,bjektivträger gelagerte lichtelektrische Zelle durch eine am Balg liegende elektrische Leitung miteinander verbunden sind, dadurch gekennzeichnet, daß zur Herstellung der elektrisch leitenden Verbindung die 'Wandung des Balges selbst ganz oder teilweise mit einer hauchdünnen Metallschicht überzogen ist. PATENT CLAIMS: r. Folding camera with electric light meter, the galvanometer attached to the camera housing and the `O, lens holder stored photoelectric cell through an electrical line on the bellows are connected to one another, characterized in that for the production of the electrically conductive connection the 'wall of the bellows itself in whole or in part is covered with a wafer-thin layer of metal. 2. Klappkamera mit elektrischem Belichtungsmesser nach Anspruch z, dadurch gekennzeichnet, daß die Metallschicht nach dem Schoopschen Verfahren aufgespritzt ist. Zur Abgrenzung des Antneldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschriften , . , N r. 456 812, _ 458 561, 605 7 1 6; italienische Patentschrift . . . . - 376 853 britische - 426 707.2. folding camera with electric light meter according to claim z, characterized in that the metal layer is sprayed on according to the Schoop method. To distinguish the subject of the application from the state of the art, the following publications were taken into account in the granting procedure: German patents,. , No. 456 812 _ 458 561, 605 7 1 6; Italian patent specification. . . . - 376 853 British - 426 707.
DEI67568D 1940-08-02 1940-08-02 Folding camera with electric light meter Expired DE746975C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI67568D DE746975C (en) 1940-08-02 1940-08-02 Folding camera with electric light meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI67568D DE746975C (en) 1940-08-02 1940-08-02 Folding camera with electric light meter

Publications (1)

Publication Number Publication Date
DE746975C true DE746975C (en) 1944-09-01

Family

ID=7196745

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI67568D Expired DE746975C (en) 1940-08-02 1940-08-02 Folding camera with electric light meter

Country Status (1)

Country Link
DE (1) DE746975C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938822C (en) * 1950-02-04 1956-02-09 Schneider Co Optische Werke Photographic or cinematographic recording device with photocell and device for exposure adjustment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE456812C (en) * 1925-03-19 1928-03-02 Julius Von Bosse Dr Process for metallizing furs and feathers by cathodic atomization
DE458561C (en) * 1925-05-28 1928-04-13 Julius Von Bosse Dr Process for metallizing single fibers, webs, woven goods and organic synthetic products
DE605716C (en) * 1932-09-10 1934-11-16 Robert Schwarz Process for metallizing synthetic resin pressed parts
GB426707A (en) * 1933-07-05 1935-04-08 Philips Nv Improvements relating to the production of electrically conducting coatings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE456812C (en) * 1925-03-19 1928-03-02 Julius Von Bosse Dr Process for metallizing furs and feathers by cathodic atomization
DE458561C (en) * 1925-05-28 1928-04-13 Julius Von Bosse Dr Process for metallizing single fibers, webs, woven goods and organic synthetic products
DE605716C (en) * 1932-09-10 1934-11-16 Robert Schwarz Process for metallizing synthetic resin pressed parts
GB426707A (en) * 1933-07-05 1935-04-08 Philips Nv Improvements relating to the production of electrically conducting coatings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938822C (en) * 1950-02-04 1956-02-09 Schneider Co Optische Werke Photographic or cinematographic recording device with photocell and device for exposure adjustment

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