JPH10148875A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the size of a camera from getting large even though a film cartridge related to a new proposal is loaded by housing the film cartridge at the lower part of a camera main body and providing a film take-up spool on the upper part of an exposure aperture part. SOLUTION: The cartridge 10 is arranged on the lower part of the camera main body 1, and a film 9 drawn out from the cartridge 10 is taken up by the take-up spool 11 disposed above an aperture forming an image plane. The spool 11 is behind a roof mirror 5, positioned below an eyepiece 6, and disposed behind the film 9. An information recording part 14 for recording photographic information with respect to the cartridge 10 is provided in contact with the cartridge 10. A film feeding driving system for drawing out, taking up, and rewinding the film 9 is arranged on the camera main body 1 while interposing the optical axis of the photographic lens 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera using a photographic film cartridge in which a film is stored in a roll.

[0002]

2. Description of the Related Art Although a screen of a JIS 135 film conventionally used is 24 × 36 mm, the inventor of the present application has proposed that a screen of 40 × 56 mm which is about 30% wider than this screen size.
We have proposed a new cartridge film having about the same screen (Japanese Patent Application No. 8-309024). If this new size screen film is used, the printed image quality can be improved as the screen is wide.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to prevent the film cartridge according to the above-mentioned new proposal from being much larger than a current camera in mounting and using the film cartridge in a camera, especially a single-lens reflex camera. With the goal. In addition, the present invention can take a picture with a screen size of 24 × 36 mm even when a camera using a film cartridge according to the new proposal is attached with a conventional single-lens reflex camera interchangeable lens, ,
If a new lens for a new cartridge is installed, 40
It is an object of the present invention to provide a camera capable of shooting with a screen size of × 28 mm.

[0004]

According to a first aspect of the present invention, there is provided a camera using a film cartridge for storing a film in a roll shape, the camera being provided below a camera body and above an exposure opening. It has a film cartridge and a film take-up spool arranged respectively, and drive means for drawing out a film from the film cartridge and winding the film on the take-up spool. According to a second aspect of the present invention, in the camera according to the first aspect, the film cartridge is disposed below the camera body, and the film take-up spool is above the exposure opening. It is characterized by being arranged on the rear side of the main body. Furthermore, the camera according to claim 3 is the camera according to claim 1 or 2, wherein the adaptive screen size identification information input section of the mounted photographing lens and the information memory means in the cartridge have the adaptive screen size identification information. And an information recording unit for recording information.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The camera body 1 includes a pentagonal part 1a that forms a part of a finder, a grip part 1b for a photographer to hold the camera body, and the like. A photographing lens 2 is fixed in front of the camera body 1. The photographing lens 2 is provided with the lens 2, and the photographing light beam 2 b is imaged on the film 9. Behind the taking lens 2, a quick return mirror 3 is provided rotatably with respect to the camera body. When the subject image is observed with the viewfinder, the quick return mirror 3 is lowered as shown in the figure and is located in the photographing optical path. When in this position, the quick return mirror 3 reflects the photographic light beam 2 b to the focusing screen 4.

[0006] Above the focusing screen 4,
A roof mirror 5 is provided, and an eyepiece 6 is arranged on the emission side of the subject light beam reflected by the roof mirror 5. A finder is formed by the focusing screen 4, the roof mirror 5, the eyepiece 6, and the like. An eye cup 7 is provided behind the eyepiece 6. A known focal plane shutter 8 is provided behind the quick return mirror 3, and a film 9 is positioned behind the focal plane shutter 8 with its position in the optical axis direction regulated by a pressure plate and a film rail (not shown).

[0007] The film 9 is stored in a cartridge 10 in a roll shape.
, And the axis of a spool for winding the film 9 into a roll in a cartridge is arranged in parallel with the camera bottom surface. The film 9 pulled out of the cartridge 10 is taken up by a take-up spool 11 provided above an opening (not shown) forming a screen 9b. The take-up spool 11 is located behind the roof mirror 5, below the eyepiece 6, and further behind the film 9. And the cartridge 10
An information recording unit 14 for recording shooting information for
It is provided so as to be in contact with the cartridge 10.

The camera body 1 has a film feed drive system 12 for pulling out, rewinding and rewinding the film 9 with the optical axis of the photographing lens 2 interposed therebetween, a rotation of the quick return mirror 3 and a shutter 8. And a mirror / shutter drive system 13 for performing the charging operation. further,
A built-in flash 1c is housed in front of and above the roof mirror 5.

FIGS. 4 and 5 show the details of the cartridge 10. FIG. The cartridge 10 is provided at a position where a film outlet 10a for pulling out the film 9 from the cartridge to the outside, a contact 10b for recording information, and a spool 10e around which the film 9 is wound can be seen from the outside.
The contact 10e is fixed to the memory substrate 10c, and is electrically connected to the similarly fixed memory IC 10d.

FIGS. 6 to 9 show screen sizes of the film 9 used in the present embodiment. FIG. 6 shows the maximum screen of the system according to the present embodiment, which has a horizontally long screen shape in the longitudinal direction of the film. FIG. 7 is a view obtained by dividing the system maximum screen shown in FIG. 6 into two parts, and has a horizontally long screen shape in the film width direction. The screen 9d is the maximum screen format used in the camera of the present embodiment. 8 shows a screen format obtained by dividing the system maximum screen shown in FIG. 6 into four parts, and FIG. 9 shows a screen format obtained by dividing the system maximum screen into eight parts.

FIG. 10 shows a circuit block diagram of the present embodiment. A CPU 15 for controlling the entire camera is disposed in the camera body 1. The CPU 15 includes a film feed control unit 16 for controlling a feed drive system 12 for feeding a film, and a mirror / shutter drive system. 13 and is connected to a shutter / mirror control unit 17 for controlling the respective components. The CPU 15 is connected to the information recording unit 14. The information recording unit 14 is connected to the IC memory 10d in the cartridge 10 via the camera body side contact 20 and the cartridge side contact 10b, and stores information from the CPU 15 in the IC memory 10d. Can be recorded. The IC memory 10d is configured by an electrically rewritable nonvolatile memory.

The photographing lens 2 has identification information 22 of the corresponding screen size. This identification information is constituted by a ROM, an on / off contact, and the like. The identification information 22 is transmitted to the information input unit 23 via the photographing lens side contact 21 and the camera body side contact 20, and the CPU 15 inputs the identification information 22 from the information input unit 23. The screens to be exposed can be the respective screens shown in FIGS. 6 to 9. In the present embodiment, the screen size 9 d shown in FIG.
It is approximately 28 × 40 mm. The photographing lens 2 is detachable from the camera body 1, and the camera body 1 has the screen size of 28 × 40 mm, which is the same size as the conventional one.
It can correspond to two screen sizes of × 36 mm (9 gb in FIG. 7). Therefore, the CPU 15 of the camera body 1
In order to identify which of the two types of screen sizes the photographing lens 2 has, identification information 22 is input from within the photographing lens 2.

Next, the operation of this embodiment will be described. First, a cartridge 10 in which a film 9 is wound around a spool 10e in a roll shape is loaded into the camera body 1 from the outside. With this loading, the contact 10b of the cartridge 10 is held in contact with the contact 20 on the camera body side. When detecting that the cartridge lid (not shown) has been closed, the CPU 15 operates the film feeding drive system 12, and the film 9 is moved to the film outlet 1 of the cartridge 10.
0a. The film 9 is a take-up spool 11
Is sent out to the spool 11 by winding means using friction or the like. At this time, the film 9 is wound with the emulsion side, which is the image exposure surface, of the film 9 having the inner diameter side. The feeding operation stops when the first frame of the film 9 reaches the position of the exposure opening.

The CPU 15 operates the information recording section 18 to record necessary information including the maximum photographing screen format information of the camera in the IC memory 10d of the cartridge 10. In the present embodiment, the screen 9d shown in FIG. 7 has the maximum format as described above. In this state, when the release for photographing is performed, the CPU 15 causes the shutter / mirror control unit 17 to operate the mirror / shutter drive system, thereby causing the quick return mirror 3 to operate.
Retreats from the photographing optical path, and the shutter 8 operates. Thus, the subject image formed by the photographing lens 2 is exposed on the film 9. When the exposure is completed, the CPU 15 controls the film feed control unit 16 to wind up the film 9 by one frame and wind it on the spool 11. When the exposure of the predetermined number of frames is completed, the film 9 is rewound on the spool 10e of the cartridge 10 again.

Next, a control flow for handling two types of photographing lenses will be described with reference to FIG. First, when the control subroutine starts, it is detected whether or not a release switch (not shown) has been turned on. If the release switch has been turned off, a standby loop is executed (step S1, steps are omitted). When it is detected that the release switch has been turned on for photographing, an exposure operation on the film such as photometry, aperture setting, shutter opening / closing, and film feeding is executed by another subroutine (not shown) (S2).

When the exposure operation is completed, the identification information 2
2 to determine whether the attached photographing lens is a conventional lens (screen size 24 × 36 mm) (S
3) In the case of the conventional lens, the process proceeds to step S4,
24 × 3 in the IC memory 10 d in the cartridge 10
Write 6mm format data. On the other hand, if the identification information 22 is not a conventional lens, the process proceeds to step S6, where 28 × 40 mm format data is written to the IC memory 10d. In step S4 or S6,
The format data is written, and then the film winding operation is performed, and this subroutine ends.

In this embodiment, the cartridge 10
Is disposed below the camera main body 1 and the take-up spool 11 is disposed above the camera main body 1. However, the present invention is not limited to this, and it goes without saying that the take-up spool 11 may be disposed in reverse. In addition, the information recording means is I
Although the C memory is used, the present invention is not limited to this, and various methods such as a method of optically imprinting on a film and a method of recording on a magnetic layer applied to the film can be used. Further, the screen of the new cartridge film is 40 × 28 mm, but the screen size is not limited to this, and may be a different size, especially a film larger than the screen size of the conventional JIS135 film.

As described above, according to the present embodiment,
Since the film cartridge 10 and the take-up spool 11 are arranged below the bottom of the camera body 1 and below the eyepiece 6 of the finder optical system, a single-lens reflex camera can be used even if the film is fed vertically. The whole can be reduced in size. Even when using a multi-format film, the photographed reference format is stored in a storage means such as an IC memory, so that it can be easily identified. Furthermore, since the identification information is input from the photographing lens, a single-lens reflex camera that can use both the new format and the conventional format photographing lenses can be obtained.

According to the above embodiment of the present invention,
The following configuration is obtained. (1) In a camera using a film cartridge for storing a film in a roll form, a film cartridge stored below a camera body and a film take-up spool provided above an exposure opening, wherein the film is stored in the rear of the camera body. A camera comprising: a spool to be wound on a side; and a driving unit for drawing a film from the film cartridge and winding the film on the winding spool. (2) The camera according to (1), wherein the film is a multi-format film in which a photographing screen size can be arbitrarily selected. (3) The camera according to (1) or (2), wherein the film cartridge is housed on the front side with respect to the imaging surface of the camera body. (4) The camera according to (1) to (3), wherein the take-up spool is disposed below the eyepiece of the camera body. A camera body having a maximum screen size information generating means and a means for transmitting the information to a cartridge; and (5) the camera according to (2) to (4), wherein the film cartridge has means for storing the maximum screen size information. Camera system. (6) The camera according to (2) to (4), wherein the camera body has a means for generating maximum screen size information and a means for transmitting the information to the film cartridge. (7) The camera according to any one of (1) to (4), wherein the camera is a single-lens reflex type in which a finder system is arranged in photographing lens information.

(8) In a camera using a film cartridge for storing a film in a roll form, a film cartridge stored below the camera body and a film take-up spool provided in information on an exposure opening. A spool that winds to the rear of the camera body,
A drive unit for extracting a film from the film cartridge and winding the film on the take-up spool, an adaptive screen size identification information input unit for the mounted photographing lens, and a unit for recording the information in the information memory unit of the cartridge. A camera having an information recording unit. (9) The camera according to (8), wherein the adaptive screen size is two or more of 24 × 36 and larger.

(10) A film vertical feeding type single-lens reflex camera, wherein a winding means for winding the film is arranged above and behind the exposure opening. As described above, according to the camera described in (10), the film is wound up above and behind the exposure opening, so that the empty space below the viewfinder can be effectively used, and the camera can be reduced in size. Can be (11) The camera according to (10), wherein the long side of the shooting screen is perpendicular to the moving direction of the film. (12) A camera having recording means for recording, on a film or a film cartridge, basic format information of a photographing screen depending on a photographing lens. As described above, in the camera described in (12), the basic format information of the shooting screen is recorded on a film or the like, so that it is possible to use a newly proposed lens and also use a conventional shooting lens. Can be.

[0022]

According to the present invention, when the film cartridge according to the above-mentioned new proposal is loaded and used in a camera, especially a single-lens reflex camera, the size of the film cartridge is not so large as compared with the existing camera. In addition, the present invention can take a picture with a screen size of 24 × 36 mm even when a camera using a film cartridge according to the new proposal is attached with a conventional single-lens reflex camera interchangeable lens, When a new lens for a new cartridge is mounted, shooting can be performed with the screen size of the new cartridge film.

[Brief description of the drawings]

FIG. 1 is a sectional view of a single-lens reflex camera according to an embodiment of the present invention.

FIG. 2 is a plan view of the single-lens reflex camera shown in FIG.

FIG. 3 is an internal layout view of the single-lens reflex camera shown in FIG. 1 as viewed from the front.

FIG. 4 is a plan view showing details of a film cartridge used in the single-lens reflex camera according to the embodiment of the present invention, including a partial cross-sectional view of the cartridge.

FIG. 5 is a side view of the cartridge shown in FIG.

FIG. 6 is a diagram showing a system maximum screen size of a cartridge film used in the embodiment.

FIG. 7 is a diagram illustrating a maximum screen size used in a cartridge film used in the embodiment.

FIG. 8 is a view showing a screen size obtained by dividing a system maximum screen size of a cartridge film used in the present embodiment into four parts.

FIG. 9 is a diagram showing screen sizes obtained by dividing the system maximum screen size of the cartridge film used in the present embodiment into eight.

FIG. 10 is a circuit block diagram according to the present embodiment.

FIG. 11 is a flowchart in the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera main body 1a Penta unit 2 Photographing lens 6 Eyepiece 9 Film 10 Cartridge 10d Memory IC 11 Take-up spool 14 Information recording unit

Continuation of front page (72) Inventor Miyazawa Higashi 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd.

Claims (3)

[Claims] 1. A camera using a film cartridge for storing a film in a roll form, wherein a film cartridge and a film take-up spool are arranged below the camera body and above an exposure opening, respectively, and the film is drawn from the film cartridge. And a driving means for winding on the winding spool. 2. The camera according to claim 1, wherein the film cartridge is disposed below the camera main body, and the film take-up spool is disposed above the exposure opening and behind the main body. 2. The camera according to 1. 3. An information input section for adaptively identifying screen size of a mounted photographic lens, and an information recording section for recording adaptive screen size identification information in information memory means in the cartridge. The camera according to.