DE938822C - Photographic or cinematographic recording device with photocell and device for exposure adjustment - Google Patents

Photographic or cinematographic recording device with photocell and device for exposure adjustment

Info

Publication number
DE938822C
DE938822C DESCH1149A DESC001149A DE938822C DE 938822 C DE938822 C DE 938822C DE SCH1149 A DESCH1149 A DE SCH1149A DE SC001149 A DESC001149 A DE SC001149A DE 938822 C DE938822 C DE 938822C
Authority
DE
Germany
Prior art keywords
photocell
photographic
lens
exposure adjustment
exposure
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
DESCH1149A
Other languages
German (de)
Inventor
Karl Dr Weiss
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.)
Jos Schneider Optische Werke GmbH
Original Assignee
Jos Schneider Optische Werke GmbH
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 Jos Schneider Optische Werke GmbH filed Critical Jos Schneider Optische Werke GmbH
Priority to DESCH1149A priority Critical patent/DE938822C/en
Application granted granted Critical
Publication of DE938822C publication Critical patent/DE938822C/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
    • G03B7/04—Control effected by hand adjustment of a member that senses indication of a pointer of a built- in light-sensitive device, e.g. by restoring point to a fixed associated reference mark
    • G03B7/06—Control effected by hand adjustment of a member that senses indication of a pointer of a built- in light-sensitive device, e.g. by restoring point to a fixed associated reference mark by a follow-up movement of an associated reference mark to the pointer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)

Description

Die Erfindung betrifft ein photographisches oder kinematographisches Aufnahmegerät mit einem aus Linsen oder Linsengliedern - zusammengesetzten Objektiv sowie mit einer Photozelle zur Belichtungsmessung und Mitteln zur Übertragung des gemessenen Helligkeitswertes auf- eine Einrichtung, mit welcher die Belichtung der Aufnahmeschicht durch Änderung der Belichtungszeit und/oder der Blendenöffnung beeinflußt werden kann. Die bisher bekanntgewordenen Bauarten solcher Geräte erfordern stets ein besonderes Linsensystem, welches den Lichtstrom auf die Photozelle wirft oder die Anordnung der letzteren auf einem die Mattscheibe umgebenden Rahmen bzw. auf den beweglichen Verschlußblättern eines Objektiv-.oder Schlitzverschlusses.The invention relates to a photographic or cinematographic Recording device with an objective composed of lenses or lens elements as well as with a photocell for exposure measurement and means for transmitting the measured brightness value on a device with which the exposure of the Recording layer influenced by changing the exposure time and / or the aperture can be. The previously known types of such devices always require a special lens system that throws the luminous flux onto the photocell or the arrangement of the latter on a frame surrounding the screen or on the movable shutter blades of a lens or focal plane shutter.

Diese Bauarten sind entweder. umständlich-und erfordern einen bei den heutigen Geräten nicht verfügbaren Raum, oder sie messen- nicht den Aufnahmelichtstrom bzw. sie beeinträchtigen die Beweglichkeit der Verschlußblätter in unzulässiger Weise. Die Erfindung behebt diese -Mängel dadurch, daßdie Photozelle ringförmig ausgebildet und zwischen zwei Linsen oder Linsengliedern des Objektivs angeordnet ist.These types are either. awkward-and require one at Space is not available with today's devices, or they do not measure the recorded luminous flux or they impair the mobility of the shutter blades in an impermissible manner Way. The invention overcomes these deficiencies in that the photocell is annular formed and arranged between two lenses or lens members of the objective is.

Um bei der beschriebenen Anordnung eine unerwünschte Verkleinerung des ursprünglichen Öffnungsverhältnisses des Objektivs zu vermeiden, wird zweckmäßig der vor der Photozelle- liegende Objektivteil entsprechend vergrößert, in dem Erfindungsbeispiel nur die Vorderlinse.To an undesirable reduction in size in the described arrangement Avoiding the original focal ratio of the lens becomes useful the lens part in front of the photocell is enlarged accordingly in the example of the invention only the front lens.

Bei sogenannten mehräugigen Kameras, also bei solchen mit je einem Aufnahme und Sucherobjektiv, wird das Belichtungsmessersystem nach der Erfindung vorzugsweise in den Strahlengang des letzteren eingeschaltet.With so-called multi-lens cameras, i.e. with those with one each Recording and viewfinder lens, is the light meter system according to the invention preferably switched into the beam path of the latter.

Die Zeichnung veranschaulicht schematisch ein Ausführungsbeispiel des Erfindungsgegenstandes, und zwar an einer handelsüblichen photographischen Kamera in Draufsicht, teilweise geschnitten.The drawing schematically illustrates an embodiment of the subject matter of the invention, namely on a commercially available photographic camera in plan view, partially cut.

Es bezeichnet a das Kameragehäuse mit dem Verschluß b und dem eingebauten Aufnahme-objektiv c, letzteres bestehend aus der Vorderlinse I, einer mittleren Zerstreuungslinse 2 und einem verkitteten Hinterglied 3. Ferner bezeichnet d den Einstellhebel für die Aufnahmeblende und e denjenigen für die Zellenblende f, welche miteinander, gekuppelt sind. Die Photozelle g ist ringförmig ausgebildet und hinter der entsprechend vergrößerten Vorderlinse I des Objektivs c angeordnet. Durch Leitungsdrähte h ist die Photozelle g mit dem (schematisch angedeuteten) Kapillarelektrometer oder Galvanometer i stromschlüssig verbunden, welches zweckmäßig am oberen Teil des Kameragehäuses a angeschlossen ist.A designates the camera housing with the shutter b and the built-in receptacle lens c, the latter consisting of the front lens I, a central diverging lens 2 and a cemented rear element 3. Furthermore, d designates the setting lever for the receptacle diaphragm and e that for the cell diaphragm f which are coupled to each other. The photocell g is ring-shaped and arranged behind the correspondingly enlarged front lens I of the objective c. The photocell g is connected to the (schematically indicated) capillary electrometer or galvanometer i, which is expediently connected to the upper part of the camera housing a, by means of lead wires h.

Das Galvanometer i kann mit dem Einstellring k für die Belichtungszeit in verschiedener Weise gekuppelt sein, z. B. durch einen über der Anzeigefläche des Galvanometers vorgesehenen Ring j mit einem als Folgezeiger dienenden Schlitz j , welcher von Hand so lange gedreht wird, bis der Zeiger z des Galvanometers darin erscheint, welche Drehung z. B. durch eine Welle l auf den Einstellring k für die Belichtungszeit übertragen wird.The galvanometer i can be coupled to the setting ring k for the exposure time in various ways, e.g. B. by a provided above the display surface of the galvanometer ring j with a serving as a subsequent pointer slot j, which is rotated by hand until the pointer z of the galvanometer appears in it, which rotation z. B. is transmitted by a shaft l to the setting ring k for the exposure time.

Erwähnt sei, daß bei der beispielsweise beschriebenen Ausbildung und Anordnung die gemessene mit der aufzunehmenden Leuchtdichte stets übereinstimmt.It should be mentioned that in the training and described for example Arrangement that always matches the measured luminance with the luminance to be recorded.

Claims (1)

PATENTANSPRUCH: Photographisches oder kinematographisches Aufnahmegerät mit einem aus Linsen oder Linsengliedern zusammengesetzten Objektiv sowie mit einer Photozelle zur Belichtungsmessung und Mitteln zur ;tlbertragung des gemessenen Helligkeitswertes auf eine Einrichtung, mit welcher die Belichtung der Aufnahmeschicht durch Änderung der Belichtungszeit und/oder der Blendenöffnung beeinflußt werden kann, dadurch gekennzeichnet, daß die Photozelle (g) ringförmig ausgebildet und zwischen zwei Linsen oder Linsengliedern des Objektivs (c) angeordnet ist. Angezogene Druckschriften: Deutsche Patentschriften Nr. 343 o86, 657 098, 691699, 697 202, 722 135, 723 829, 734 864, 741456, 741 845, 746 675, 746 975, 804 485.PATENT CLAIM: A photographic or cinematographic recording device with an objective composed of lenses or lens elements as well as with a photocell for measuring exposure and means for transmitting the measured brightness value to a device with which the exposure of the recording layer can be influenced by changing the exposure time and / or the aperture , characterized in that the photocell (g) is annular and is arranged between two lenses or lens elements of the objective (c). Cited pamphlets: German Patent Nos. 343,086, 657 098, 691 699, 697 2 0 2, 722 1 35, 723 829, 734 864, 741456, 741 845, 746 675, 746 975, 804 485.
DESCH1149A 1950-02-04 1950-02-04 Photographic or cinematographic recording device with photocell and device for exposure adjustment Expired DE938822C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH1149A DE938822C (en) 1950-02-04 1950-02-04 Photographic or cinematographic recording device with photocell and device for exposure adjustment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH1149A DE938822C (en) 1950-02-04 1950-02-04 Photographic or cinematographic recording device with photocell and device for exposure adjustment

Publications (1)

Publication Number Publication Date
DE938822C true DE938822C (en) 1956-02-09

Family

ID=7422716

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH1149A Expired DE938822C (en) 1950-02-04 1950-02-04 Photographic or cinematographic recording device with photocell and device for exposure adjustment

Country Status (1)

Country Link
DE (1) DE938822C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178696B (en) * 1955-02-14 1964-09-24 Gustav Maass Photographic camera with coupled exposure meter
DE1210319B (en) * 1964-11-12 1966-02-03 Leitz Ernst Gmbh Light metering device in photographic cameras
DE1221094B (en) * 1964-04-04 1966-07-14 Zeiss Ikon Ag Exposure metering or control device for photographic and cinematographic devices

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE343086C (en) * 1920-10-09 1921-10-28 E. Leitz Unbalanced lens
DE657098C (en) * 1935-11-06 1938-02-24 Kodak Akt Ges Photoelectric light meter on photographic cameras
DE691699C (en) * 1935-05-03 1940-06-03 I G Farbenindustrie Akt Ges Photoelectric light meter assembled with the viewfinder of a photo or cinema camera
DE697202C (en) * 1935-11-13 1940-10-08 Kodak Akt Ges Folding photographic camera with photoelectric light meter
DE722135C (en) * 1939-07-28 1942-07-02 Ihagee Kamerawerk Ag Single lens reflex camera with light meter
DE723829C (en) * 1936-11-01 1942-08-12 Jacques Wolf Dipl Ing Photographic lens shutter with photoelectric light meter
DE734864C (en) * 1938-03-15 1943-04-30 Fritz Goehlert Process for automatic control of the exposure in photographic equipment
DE741456C (en) * 1933-10-29 1943-11-11 Ig Farbenindustrie Ag Camera with electric light meter
DE741845C (en) * 1931-01-28 1943-11-18 Oedoen Riszdorfer Dr Photographic camera with lens aperture, adjustable shutter and an electric light meter
DE746675C (en) * 1934-05-15 1944-08-18 Ernst Presser Photographic camera in which a photoelectric, self-delivering current cell is movably built in to measure the strength of the incident light
DE746975C (en) * 1940-08-02 1944-09-01 Ig Farbenindustrie Ag Folding camera with electric light meter
DE804485C (en) * 1949-09-06 1951-04-23 Schneider Co Optische Werke Optical system with built-in light meter

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE343086C (en) * 1920-10-09 1921-10-28 E. Leitz Unbalanced lens
DE741845C (en) * 1931-01-28 1943-11-18 Oedoen Riszdorfer Dr Photographic camera with lens aperture, adjustable shutter and an electric light meter
DE741456C (en) * 1933-10-29 1943-11-11 Ig Farbenindustrie Ag Camera with electric light meter
DE746675C (en) * 1934-05-15 1944-08-18 Ernst Presser Photographic camera in which a photoelectric, self-delivering current cell is movably built in to measure the strength of the incident light
DE691699C (en) * 1935-05-03 1940-06-03 I G Farbenindustrie Akt Ges Photoelectric light meter assembled with the viewfinder of a photo or cinema camera
DE657098C (en) * 1935-11-06 1938-02-24 Kodak Akt Ges Photoelectric light meter on photographic cameras
DE697202C (en) * 1935-11-13 1940-10-08 Kodak Akt Ges Folding photographic camera with photoelectric light meter
DE723829C (en) * 1936-11-01 1942-08-12 Jacques Wolf Dipl Ing Photographic lens shutter with photoelectric light meter
DE734864C (en) * 1938-03-15 1943-04-30 Fritz Goehlert Process for automatic control of the exposure in photographic equipment
DE722135C (en) * 1939-07-28 1942-07-02 Ihagee Kamerawerk Ag Single lens reflex camera with light meter
DE746975C (en) * 1940-08-02 1944-09-01 Ig Farbenindustrie Ag Folding camera with electric light meter
DE804485C (en) * 1949-09-06 1951-04-23 Schneider Co Optische Werke Optical system with built-in light meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178696B (en) * 1955-02-14 1964-09-24 Gustav Maass Photographic camera with coupled exposure meter
DE1221094B (en) * 1964-04-04 1966-07-14 Zeiss Ikon Ag Exposure metering or control device for photographic and cinematographic devices
DE1210319B (en) * 1964-11-12 1966-02-03 Leitz Ernst Gmbh Light metering device in photographic cameras

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