DE29803606U1 - Universal photo system - Google Patents

Description

BOEHMERT & BOEHMERT

LAW FIRM

Boehmen & Boehmert · POB. 10 71 27 · D-28071 Bremen Registered mail

To the

German Patent Office Zweibrückenstr. 12

80297 Munich

DR.-ING. KARL BOEHMERT, PA <im.&ldquor;m DIPU-ING. ALBERT BOEHMERT, PA cm«-!»» WILHELM JH STAHLBERO, RA, Bremen DR.-ING. WALTER HOORMANN, PA ^- , BREMEN DIPL-PHYS. DR. HEINZ GODDAR, PA ^- , monches DR.-ING. ROLAND UESEGANG, PA ^- , Munich WOLF-DIETER XUMTZE, RA. bhemen. aucante DlPL-PHYS. ROBERT MÜNZHUBER, PA (isis-iwj) DR. LUDWIG KOUKER, RA, BREMEN DR. (CHEM.) ANDREAS WINKLER, PA ^- , Bremen MICHAELA HUTH-DIERIG, RA, Munich DIPL-PHYS. DR. MARION TÖNHARDT, PA'. dcsseldorf DR. ANDREAS EBERT-WEIDENFELLER, RA. Bremen D(PL-ING. EVA LIESEGANG, PA ^- , based

PA - Patent Attorney/Paust Anomcy RA · Attorney at Law/Anoraey al Law

' · European Patent Attorney

All admitted to the EU Maritime Administration Alicante Professional Representation at the EU-Taiwan Office. Alicante PROF. DR. WILHELM NORDEMANN. LAWYER, BRANDENBUHO DR. AXEL NORDEMANN. RA. KmDAM DR. JAN BERND NORDEMANN, LLM, RA, certified DIPL-PHYS. EDUARD BAUMANN, PA ^- , hOkenxircken DR.-ING. GERALD KLÖPSCH, PA ^- , dOsseldoüf DR. (CHEM.) HELGA KUTZENBERGER, PA ^- . dOsseldor DIPL-ING. HANS W. GROENING, PA", Munich DR. ANKE SCHIERHOLZ, LAWYER, Potsdam DIPL-ING. DR. JAN TÖNNIES, PA, RA, kiel DIPL-PHYS. CHRISTUN BIEHL, PA ^- , kiel DIPL-PHYS. DR. DOROTHEE WEBER-BRULS. PA", frankfu DR.-ING. MATTHIAS PHILIPP. PA ^- , bkemen DlPL-PHYS. DR. STEFAN SCHOHE ₁ PA", LEirao MARTIN WIRTZ, LAWYER, Bremen DR. DETMAR SCHÄFER. Attorney, Bremen DIPL-CHEM. DR. ROLAND WEISS, PA, Düsseldorf DIPL.-PHYS. DR.-ING. UWE MANASSE, PA, Bremen

Your sign Your letter

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New registration (utility model) ■

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B3610

Bremen

March 2, 1998

Bremaphot Biedebach & Co. {GmbH & Co), Birkenstrasse 18/19

28195 Bremen

Universal photo system

The present invention relates to a photographic film, a photographic camera and a system comprising both.

Conventional photographic films, such as black and white negative films and color negative and reversal films, are available in different film formats, such as medium and format format, 35mm and APS (Advanced Photo System) format, as well as with different numbers of exposures, e.g. 12, 24 and 36 exposures. However, the films have a uniform light sensitivity over their entire length. This is disadvantageous because the lighting conditions vary significantly over the course of a day. Before buying a film, a customer must therefore decide whether he

2827

Hollerallee 32 · D-28209 Bremen · POB 10 71 27 · D-28071 Bremen · Telephone (04 21) 3 40 90 · Fax (04 21) 3 49 17

MUNICH - BREMEN - BERLIN - FRANKFURT - DÜSSELDORF - POTSDAM - BRANDENBURG - HÖHENKLRCHEN - KIEL - LEIPZIG - ALICANTE

e-mail: Postmaster@BoehmertBoehmert.de

buy a film that has a relatively high resolution and low graininess, but can basically only be used at midday when the light intensity is relatively high, or buy a light-sensitive film that is suitable for the morning and evening hours but has a lower resolution and higher graininess.

The invention is therefore based on the object of providing a photo system that is universal, i.e. suitable for taking photos in many different lighting conditions.

The present task is solved by a photographic film consisting of a film strip with

- at least two sections of film materials with different light sensitivities arranged one behind the other in its longitudinal extension,

- an identification device for identifying the light sensitivity of the respective film material, and

- a display device for displaying exposed areas of the film strip.

This task is also solved by a photographic camera with

- a film transport device for a photographic film inserted into the camera,

- a subject brightness measuring device,

BOEHMERT & BOEHMe'rt" *··"··" ··*"*«

- a light sensitivity reading device for detecting the light sensitivity of a section of the photographic film to be exposed,

- an exposure state detection device for detecting the exposure state of the section and

- a control device for the manual selection or, if an upper or lower limit value for the image subject brightness is exceeded or not reached by the image subject brightness value measured by the image subject brightness measuring device, the automatic output of a control signal to the film transport device for transporting the film to a section detected as unexposed by the exposure state detection device with a different film light sensitivity recognized by the light sensitivity reading device.

Three sections made of film materials with different light sensitivities can be provided.

In particular, it can be provided that the ratio of the light sensitivity is 1:2:4. For example, the light sensitivities of the three sections can be 100 ASA, 200 ASA and 400 ASA.

Preferably, adjacent sections made of film materials with different light sensitivities are welded together.

Conveniently, the film strip has a perforation on both long sides for film transport

BOEHMERT & BOEHMER ⁴ P''··'*··".··"·

It can be provided that the identification device is arranged between one of the perforations and an exposure field.

Advantageously, the identification device comprises a coding of the light sensitivities of the film materials.

Furthermore, it can be provided that the identification device includes a coding of the beginning and end of a section.

Conveniently, the coding is a bar code.

According to a particular embodiment of the invention, the display device is arranged between one of the perforations and the exposure field.

In particular, it can be provided that the display device is arranged on the same long side as the identification device between one of the perforations and the exposure field.

It can be provided that the display device is arranged next to the identification device.

Alternatively, it can be provided that the display device in the film material assembly device is located above the identification device. .

According to another particular embodiment of the invention, the display device is a layer that reacts to light by blackening.

BOEHMERT & BOEHMERT

Furthermore, it can be provided that the film strip has the dimensions of an APS film.

On the other hand, it can also be provided that the film strip has the dimensions of a 35mm film.

Again, the film strip can also have the dimensions of a medium or large format film. Such films are called roll films (for view cameras).

Furthermore, it can be designed to be developable in a standard C41 color negative process.

On the other hand, the film can also be developed in a standard E6 color reversal film process.

The photographic camera may be provided with a section start and end detection device for detecting the start and end of a respective section.

Conveniently, the control device can be switched from manual operation to automatic operation and vice versa.

According to a particular embodiment of the invention, the light sensitivity reading device comprises at least one photocell or at least one photodiode.

Furthermore, it can be provided that the exposure state detection device comprises at least one photocell or at least one photodiode.

BOEHMERT & BOEHMERT

Advantageously, the camera comprises an alarm device for emitting an optical or acoustic alarm signal when the exposure state detection device detects complete exposure of the section with a different film light sensitivity that is manually selected or automatically transported to the film stage.

The invention is based on the surprising discovery that by providing sections with different light sensitivities and a corresponding light sensitivity identification and exposure display, a film is provided that can be used in very different lighting conditions, i.e. universally.

Further features and advantages of the invention emerge from the claims and from the following description, in which an embodiment is explained in detail using the schematic drawings. In the drawings:

Fig. 1 shows an embodiment of the photographic film according to the invention in the state pulled out of a film cartridge, the film strips being shown one below the other for reasons of space and without perforations for the sake of clarity;

Fig. 2 shows a connecting region between two sections with different light sensitivities of the film of Fig. 1;

Fig. 3 shows a section of the film of Fig. 1 in detail;

BOEHMERT & BOEHMERT

Fig. 4 shows the section marked in Fig. 3 greatly enlarged and for three different film light sensitivity codings; and

Fig. 5 an aperture-exposure time curve for an exposure program of a photographic camera.

Fig. 1 shows an embodiment of the photographic film 10 according to the invention in the state pulled out of a film cartridge 12, the film strip being shown one below the other for reasons of space and without perforations for the sake of clarity. The film 10 has three sections 14, 16, 18 (the beginning of each of which is marked) made of film materials with different light sensitivities. The sections 14, 16, have a light sensitivity of 100 ASA, 200 ASA and ASA. A film with 24 exposures can, for example, have space for six exposures with a light sensitivity of 100 ASA, 12 exposures with a light sensitivity of ASA and six exposures with a light sensitivity of 400 ASA.

Fig. 2 shows schematically how sections 14 and 16 or 16 and 18 are connected to one another. Sections 14 and 16 or 16 and 18 are joined together to form a continuous film using modern welding at the interfaces. Each section end is slightly beveled and placed on top of the next section, which is also beveled. Both sections are then joined together using heat welding.

Fig. 3 shows a section of the film of Fig. 1 i

BOEHMERT & BOEHMDERT "··""' ■··*'·

Detail. The film 10 has an upper perforation 20 and a lower perforation 22. Between the two perforations 20, 22 there is an exposure field 24. Between the upper perforation 20 and the exposure field 24 there is an identification device 26 for identifying the light sensitivity of the respective film material and a display device 28 for displaying exposed areas of the film strip. The display device 28 consists of a light-sensitive, chemical layer that lies above the identification device 26. The layer reacts to light in such a way that it immediately turns black, even with small amounts of light. This means that if light falls on the still unused film section during a recording (exposure), the identification device 26 located underneath is no longer readable.

Fig. 4 shows the section marked in Fig. 3 greatly enlarged and codings for three different light sensitivities below each other. The identification device 26 consists of a black/white coding. Fig. 4 shows from top to bottom the coding over exactly one image format of the light sensitivities of 100 ASA, 200 ASA and 400 ASA.

The universal photo system consisting of the photographic film and the photographic camera according to the invention will be described below:

A particular embodiment of the photographic camera according to the invention has a film transport device for a photographic film inserted into the camera,

BOEHMERT & BOEHWERT '··"··' ..·'

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a subject brightness measuring device, a light sensitivity reading device for detecting the light sensitivity of a section of the photographic film to be exposed, an exposure state detection device for detecting the exposure state of the section and a control device for the selectable or, if an upper or lower limit value for the subject brightness is exceeded or not reached by the subject brightness value measured by the subject brightness measuring device, automatic output of a control signal to the film transport device for transporting the film to a section detected as unexposed by the exposure state detection device with a different film light sensitivity detected by the light sensitivity reading device. In automatic mode, the camera decides independently which film section is most suitable for which subject brightness, aperture and exposure time. The camera decides the film section selection according to a fixed table of values. This means that if the brightness of the subject is no longer sufficient to achieve a blur-free shot, the film is transported to a section with the next higher film light sensitivity. However, if the brightness of the subject is so high that even shorter exposure times and smaller apertures are no longer sufficient for correct exposure, the film is transported to a section with a lower film light sensitivity. The camera uses the film's identification device to determine the light sensitivity of the respective section, and the display device to determine which areas of the section have already been exposed and which are still available.

BOEHMERT & BOEHWERT '··"··'

In manual mode, the corresponding film sensitivity range can be selected individually in order to be able to use the desired aperture/exposure time combinations. Of course, the camera also recognizes the already exposed areas, as in automatic mode.

With an imaginary amount of light of, for example, an exposure value of 12 and a film light sensitivity of 1.00 ASA, the optimal exposure would always coincide with a curve shown in Fig. 5. The exposure time in seconds is plotted on the X-axis and the aperture on the Y-axis. Exposure times or aperture values that lie outside the marked area are not desirable here, as exposure times that are too long would result in the image being blurred. An aperture that is too large would also not be desirable, as this would greatly shorten the depth of field. With an intelligent camera, it could now look like this: the measuring electronics determine that the calculated exposure setting is outside the optimal range (hatched area). The camera therefore selects a film section with a higher light sensitivity. This shifts the curve in Fig. 5 horizontally to the right, which in turn means that the resulting exposure values are back in the optimal range. The sections with different film light sensitivities mean that there are significantly fewer recording moments in which an automatic program has to decide on a critical exposure value that lies outside the optimal range. The further transport to a suitable and not yet exposed area of the film takes place as follows.

BOEHMERT & BOEHMERT *··**··* ··*'·-

The camera has a photocell that reads out a code from the film's identification device. This code simply tells the camera what film light sensitivity a section of the film has. If the camera does not find any data about an image area, the light-sensitive chemical layer has been blackened by a previous exposure and is therefore marked as "already exposed". In this case, the camera simply advances the film one frame further and tries again. This process is repeated until an area is found in which the light-sensitive chemical layer is not blackened and the identification device is therefore readable. If the automatic exposure has calculated a film light sensitivity of 200 ASA as optimal and the appropriate film section is no longer available, the camera warns the user. If the user wishes, a picture is still taken, using newly calculated aperture/time combinations for the film section that is still available.

With the universal photo system, it is possible to take perfect pictures in low light conditions at midday in strong sunlight, hours later in the afternoon with an automatically selected, higher-sensitivity film section and in the evening with a third, even higher-sensitivity film section using just one film. The fully exposed film does not need to be subjected to any special development, but can be developed in a standard process regardless of the film's light sensitivity.

The in the preceding description, in the drawing

BOEHMERT & BOEHMERiF* *··° '··' ··* *··'

and the features of the invention disclosed in the claims can be essential both individually and in any combination for the realization of the invention in its various embodiments.

BOEHMERT &jB©EHMEilTj *; · ?·;.> ;

B3610

List of reference symbols

10 Movies

12 film cartridge

14, 16, 18 Section

20, 22 Perforations

24 exposure field

2 6 Identification device

2 8 Display device

Claims (26)

BOEHMERT & BOEHMERT LAW FIRM Boehmert & Boehmert ■ P.03. IO 71 27 ■ D-28071 Bremen Registered mail To the German Patent Office Zweibrückenstr. 12 80297 Munich DR.-ING. KAM. BOEHMERT, PA (i»33.iro> DIPL-[NO. ALBERT BOEHMERT, PA (immmd WILHELM JH STAHLBERG, RA, biemen DR.-ING. WALTER HOORMANN. PA", Bremen DIPL-PHVS. DR. HEINZ GODDAR, PA ^- , MÖNCHEN DR.-ING. ROLAND LIESEGANG, PA', Munich WOLF-DIETER KUNTZE, RA, bhemen. aucante DIPL-PHVS. ROBERT MUNZHUBER, PA (i»!.i»ii DR. LUDWIG KOUKER, RA, Bremen DR. (CHEM.) ANDREAS WINKLER, PA', BMMEN MICHAELA HUTH-DIERIG, RA, Munich DlPL-PHVS. DR MARION TÖNHARDT, PA", Düsseldorf DR. ANDREAS EBERT-WHDENFELLER, RA, Bremen DIPL-ING. EVA EXECUTION, PA', bmjn PA - Attorney-at-Law RA - KedusanwaftfAooniey at Law ' - European Patent Attorney AUe admitted to represent before the EU Maritime Office, Alicante Professional Representation at the EU Trademark Office, Alicante PROF. DR. WILHELM NORDEMANN, LAWYER, Brandenburg DR AXEL NORDEMANN, attorney-at-law, Potsdam DR. JAN BERND NORDEMANN, LLM, LAWYER, Berlin DIiL-PHYS. EDUARD BAUMANN, PA", Hohenkircton DR-ING. GERALD KLOPSCH, PA ^- , Düsseldorf DR (CHEM.) HELGA KUTZENBERGER, PA', oOsseldo« DIPL-DJG. HANS W. GROENING, PA', Munich DR ANKE SCHIERHOLZ, attorney-at-law, Potsdam DIPL-INO. DR. JAN TONNIES. PA, RA, kiel DIPL.-PHVS. CHRISTIAN BIEHL, PA', kiel DIPU-PHYS. DR. DOROTHEE WEBER-BRÜLS, PA', franktu DR-ING. MATTHIAS PHILIPP, PA', Bremen DIPL.-PHYS. DR STEFAN SCHOHE. PA". lfjfzio MARTIN WIRTZ, LAWYER, bszmen DR DETMAR SCHÄFER, RA, bsemen DIPL-CHEM. DR ROLAND WEIB, PA, dCsseldort DIPL.-PHYS. DR.-ING. UWE MANASSE. PA, bhemen Your sign your writing Your ref. Your Letter of New application (utility model) Our sign
Our ref.
B3610 Bremen March 2, 1998 Bremaphot Biedebach & Co.(GmbH & Co.), Birkenstrasse 18/19 28195 Bremen Universal photo system Expectations 1. Photographic film (10), consisting of a film strip with - at least two sections (14, 16) arranged one behind the other in its longitudinal extension made of film materials with different light sensitivities, - an identification device (26) for identifying the light sensitivity of the respective film material, and - a display device (28) for displaying exposed areas of the film strip. 2827 Hollerallee 32 D-28209 Bremen · P.O.B. 10 71 27 D-28071 Bremen ■ Telephone (04 21) 3 40 90 · Fax (04 21) 3 49 17 68 MUNICH - BREMEN - BERLIN - FRANKFURT - DÜSSELDORF - POTSDAM - BRANDENBURG - HÖHENKIRCHEN - KIEL - LEIPZIG - ALICANTE e-mail: Postmaster@Boehmert3oehmert.de BOEHMERT S BCfEHMEkT 2. Film according to claim 1, characterized by three sections (14, 16, 18) made of film materials with different light sensitivities. 3. Film according to claim 2, characterized in that the ratio of the light sensitivities is 1:2:4. 4. Film according to one of the preceding claims, characterized in that adjacent sections (14, 16 and 16, 18) made of film materials with different light sensitivities are welded together. 5. Film according to one of the preceding claims, characterized in that the film strip has a perforation (20, 22) for film transport on each of its two longitudinal sides. 6. Film according to claim 5, characterized in that the identification device is arranged between one of the perforations (20) and an exposure field (24). 1.. Film according to one of the preceding claims, characterized in that the identification device (26) comprises a coding of the light sensitivities of the film materials. 8. Film according to one of the preceding claims, characterized in that the identification device (26) comprises a coding of the beginning and the end of a respective section (14, 16, 18). 9. Film according to claim 7 or 8, characterized in that the coding is a bar code. BOEHMERT S BOEHMERT 10. Film according to one of claims 5 to 9, characterized in that the display device (28) is arranged between one of the perforations (20 or 22) and the exposure field (24). 11. Film according to one of claims 6 to 9, characterized in that the display device (28) is on the same long side as the identification device (26) between one of the perforations (20 or 22) and the exposure field (24) is arranged. 12. Film according to claim 11, characterized in that the display device (28) is arranged next to the identification device (26). 13. Film according to claim 11, characterized in that the display device (28) is located above the identification device (26) in the direction of construction of the film materials. 14. Film according to one of the preceding claims, characterized in that the display device (28) is a layer reacting to light by blackening. 15. Film according to one of the preceding claims, characterized in that the film strip has the dimensions of an APS (Advanced Photo System) film. 16. Film according to one of claims 1 to 14, characterized in that the film strip has the dimensions of a 35mm film. 17. Film according to one of claims 1 to 14, characterized in that the film strip has the dimensions of a BOEHMER' medium or large format films. 18. Film according to one of the preceding claims, characterized in that it is developable in a standard C41 color negative process. 19. Film according to one of claims 1 to 17, characterized in that it is developable in a standard E6 color reversal film process. 20. Photographic camera, with - a film transport device for a photographic film inserted into the camera, - a subject brightness measuring device, - a light sensitivity reading device for detecting the light sensitivity of a section of the photographic film to be exposed, - an exposure state detection device for detecting the exposure state of the section and - a control device for the manual selection or, if an upper or lower limit value for the image subject brightness is exceeded or not reached by the image subject brightness value measured by the image subject brightness measuring device, the automatic output of a control signal to the film transport device for transporting the film to a section detected by the exposure state detection device as unexposed with a different section detected by the light sensitivity reading device BOEHMERT & BOTHMERT Film light sensitivity. 21. Camera according to claim 20, characterized by a section start and end detection device for detecting the start and the end of a respective section. 22. Camera according to claim 20 or 21, characterized in that the control device can be switched from manual operation to automatic operation and vice versa. 23. Camera according to one of claims 20 to 22, characterized in that the light sensitivity reading device comprises at least one photocell or at least one photodiode. 24. Camera according to one of claims 20 to 23, characterized in that the exposure state detection device comprises at least one photocell or at least one photodiode. 25. Camera according to one of claims 20 to 24, characterized by an alarm device for emitting an optical or acoustic alarm signal when the exposure state detection device detects complete exposure of the section with a different film light sensitivity that has been manually selected or automatically transported to the film stage. 26. A system comprising a photographic film according to any one of claims 1 to 19 and a photographic camera according to any one of claims 20 to 25.