JPH0545697A - Consecutive photographing camera - Google Patents

Abstract

PURPOSE:To facilitate the miniaturization of a camera by simplifying a mechanism and reducing the number of parts, to obtain exposing accuracy for respective consecutive photographing image planes, to take pictures on many consecutive photographing image planes by single consecutive photographing and to make it easy to recognize hourly the sequence of the consecutive photographing pictures. CONSTITUTION:Exposing apertures 6a-6h are arranged at every four-piece in two lines. By executing the release operation of a shutter button, two shutter plates 10 and 11 are driven to be rotated by a stepping motor 12. Slits 15a, 15b, 16a and 16b are formed on the shutter plates 10 and 11. The slits successively open/close the apertures 6a-6h. Thus, the camera is manufactured at low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous shooting camera which shoots a plurality of times at short time intervals by one release operation.

[0002]

2. Description of the Related Art When a moving subject is sequentially photographed with a time lag, it is possible to obtain a photographic image in which the movement is stopped at each photographing moment. For this reason, for example, in sports or the like, the form at each moment can be observed as a still image, which is very convenient.

In order to obtain such a continuous shooting function, the motor may wind the film frame by frame at a high speed and drive the shutter in synchronization with the film, as is done in a single-lens reflex camera. However, since the film is wound up at a high speed, the sound is noisy, and there is a problem in a scene where quietness is required, such as a golf swing. Further, if the number of frames to be used for one continuous shooting is increased, the amount of film consumption increases, and many continuous shootings cannot be performed with one film. Further, since the print photograph is usually divided into each frame, there is a problem that it takes a lot of time to organize the print photograph even if it is a continuous shooting scene.

From such a background, Japanese Patent Publication No. 41-1335
As disclosed in Japanese Patent Application Laid-Open No. 2-105132 and Japanese Patent Application Laid-Open No. 2-105132, a continuous shooting camera has been proposed in which shooting is sequentially performed through a plurality of exposure openings by one release operation. In the camera described in the former publication, a shutter blade and a spring device for driving the shutter blade are provided in each of the plurality of exposure openings, and the charged shutter blades are sequentially released to perform photographing. Further, the camera described in the latter publication has four exposure apertures so that the continuous shooting screens are arranged in a "square" shape, and one rotary shutter plate is rotated once. Only by doing so, a four-frame continuous shooting screen that is shifted in time is taken.

[0005]

However, in the case where the shutter blade and the spring device are provided for each of the plurality of exposure apertures, since each shutter blade is driven by each spring device, the structure is complicated and the number of parts is large. There is a problem that miniaturization is difficult and it is difficult to make the driving characteristics of all the shutter blades uniform, and variations occur in the exposure time and the continuous shooting interval of each continuous shooting screen. Further, in the case of rotating one shutter plate and shooting a plurality of continuous shooting screens at positions equidistant from the center of rotation, it is possible to increase the number of continuous shooting screens shot in one continuous shooting. Not only is it difficult, but it also has the disadvantage that it is difficult to understand the time sequence of the continuous shooting screens because the print pictures are arranged in a "T" pattern.

The present invention is intended to solve the above-mentioned problems. It has a simple mechanism, has a small number of parts, and can be easily miniaturized, and it is easy to make the exposure accuracy of each continuous shooting screen uniform, and moreover, once. It is an object of the present invention to provide a continuous shooting camera in which a large number of continuous shooting screens are captured in continuous shooting and the time sequence of continuous shooting screens is easy to understand.

[0007]

In order to achieve the above-mentioned object, the present invention has exposure openings arranged in two rows along the feeding direction of the film in three rows or more, and less than the number of the exposure openings. A plurality of disc-shaped shutter plates, a drive means for rotating these shutter plates at the same time, and a plurality of exposure plates formed on each of the shutter plates. And an opening for exposure across.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 2 showing the appearance of a continuous shooting camera of the present invention, eight taking lenses 3a to
Four pieces of 3h are arranged in an upper and lower two stages, and the optical axes of the respective lenses are parallel to each other. Taking lens 3a-
3d is formed integrally with one lens plate 4 formed of a transparent resin such as acrylic resin, and the photographing lenses 3e to 3e.
The h is integrally formed with the other lens plate 5.

As shown in FIG. 1, a shutter substrate 7 having eight exposure openings 6a to 6h corresponding to the taking lenses 3a to 3h is fixed inside the camera body 2. The inner diameters of these exposure openings 6a to 6h are the same. Shafts 8 and 9 are planted in the shutter substrate 7, and rotatably support disk-shaped shutter plates 10 and 11, respectively. Gears 10a and 11a are formed on the outer circumferences of the shutter plates 10 and 11 over the entire circumference. A stepping motor 12 is fixed to the back surface side of the shutter substrate 7, and a drive gear 13 fixed to the shaft of the stepping motor 12 meshes with a gear 11a of the shutter plate 11 and, via an idle gear 14, a shutter gear 10 of the shutter plate 10. It meshes with the gear 10a.

The shutter plates 10 and 11 are provided with two slits 15a, 15b, 16a and 16b, respectively. The slits 15a and 15b are the shutter plate 10.
It is on the same line segment that passes through the center of. Similarly slit 16
a and 16b are also on the same line segment that passes through the center of the shutter plate 11. In addition, the slits 15a and 15b or the slits 16a and 16b are not necessarily the respective shutter plates 10 and 1
It does not need to be on the same line segment that passes through the center of 1, and it is possible to positively shift it in consideration of the timing of shooting.

These slits 15a, 15b, 16
The slit length of a and 16b (length in the radial direction of the shutter plate) is equal to or larger than the inner diameter of the exposure openings 6a to 6h.
Further, the slit width of each of the outer slits 15a and 16a (width in the circumferential direction of the shutter plate) and the inner slit 15
The slit widths of b and 16b vary depending on the distances from the axes 8 and 9, respectively.
If the slit width of a and 16a is 1 mm, the slit width of the inner slits 15b and 16b is about 0.7 mm.

As shown in FIG. 3, the rotation of the shutter plate 10 causes the slit 15a to move clockwise from the illustrated origin position P _0, and when passing through the first exposure position P ₁ , the exposure opening 6a. Is opened and closed. When the shutter plate 10 continues to rotate and the slit 15b passes the second exposure position P ₂ , the exposure opening 6b is opened and closed. The slits 15b, 15a is a third exposure position P _3, each successively passing the fourth exposure position P _4, the exposure opening 6c, 6d are sequentially opened and closed.

At the same time that the shutter plate 10 rotates clockwise, the shutter plate 11 rotates counterclockwise. As a result, the slit 16a of the shutter plate 11 has the origin position Q _0.
To the fifth exposure position Q ₅ , the slit 15a passes through the fourth exposure position P _4, and then the exposure opening 6e is opened and closed. The rotation of the shutter plate 10 is continued until the slits 15a and 15b reach the origin position P ₀ again, and the shutter plate 11 continues to rotate counterclockwise to reach the sixth position.
At the exposure position Q ₆ , the seventh exposure position Q ₇ , and the eighth exposure position Q ₈ , the slits 16a and 16b allow the exposure openings 6f, 6g, and 6 to be exposed.
h is opened and closed sequentially. The stepping motor 12
By the drive control of, the time from opening and closing the first exposure opening 6a to opening and closing the last exposure opening 6h is about 1 second.

As shown in FIG. 4, a partition wall 20 is provided between the cartridge loading chamber 17 and the winding chamber 18 provided in the camera body 2 along the feeding direction of the film 19. Eight exposure frames 21a to 21h are formed vertically in four rows (exposure frames 21e to 21h are not shown). The horizontal lengths from the exposure frame 21a to the exposure frame 21d and from the exposure frame 21e to the exposure frame 21h are substantially the same as the horizontal length for one frame of 35 mm full size screen. In addition, each of the exposure frames 21a to 21h
The vertical length of is about half of the 35mm full size screen,
When photographing is performed through the exposure frames 21a to 21h, as shown in FIG. 1, the full size 1 of the 35 mm wide film 19 is obtained.
8 frames of continuous shooting screens 24a-2 in the frame 22a
4h is divided into upper and lower four stages and exposed.

As shown in FIG. 5, the exposure frame is set so that the horizontal size of the four continuous shooting screens 24a, 24d, 24e and 24h is longer than the other continuous shooting screens 24b, 24c, 24f and 24g. The shape of is fixed. This is because in consideration of vignetting around the screen due to the opening range 25 of the negative mask that is narrower than the screen 22a during printing.

As shown in FIG. 1, the film 19 is wound up by the spool 28 provided in the winding chamber 18 rotating counterclockwise and pulled out from the cartridge 29 loaded in the cartridge chamber 17. Spool 28
A motor 30 for winding the film is built in the drive motor, and its driving force is transmitted to the film feeding mechanism 32 via a gear 31. The film feeding mechanism 32 receives the driving force from the gear 31, drives the spool 28 via the gear 33 when the film is wound, and drives the rewinding fork 35 through the gear 34 when the film is rewound.

A sprocket 36 is engaged with the film perforation 19a and is rotated by feeding the film 19. A signal plate 37 having radial through-hole slits is integrally connected to the sprocket 36.
The rotation amount of the sprocket 36 is detected by monitoring the rotation of the photo sensor 38 with the photo sensor 38. When the film is wound up, the drive of the motor 30 is stopped when the signal plate 37 and the photo sensor 38 detect that the feeding amount of the film 19 reaches one frame of 35 mm full size.

The operation of the continuous shooting camera having the above configuration will be described. When the shutter button 40 shown in FIG. 2 is pressed after the film 19 is loaded, the stepping motor 1
2 starts driving, and the shutter plate 10 rotates clockwise through the drive gear 13 and the idle gear 14 in FIGS. At the same time, the shutter plate 11 rotates counterclockwise via the drive gear 13.

The shutter plate 10 is at the origin position P shown in FIG.
_By rotating from ₀ to the first to fourth exposure positions P ₁ , P ₂ , P ₃ , and P ₄ , the slits 15 a and 15 b sequentially open and close the exposure openings 6 a, 6 b, 6 c, and 6 d, and the film 19 The continuous shooting screens 24a, 24b, 24c, and 24d are exposed. Immediately after continuous shooting screen 24d is exposed, the shutter plate 11 reaches the home position Q ₀ to the fifth exposure position Q _5, continue to pass the sixth to eighth exposure position Q _6, Q _7, Q ₈ Therefore, the exposure openings 6e, 6f, 6g, 6h are sequentially opened and closed by the slits 16a, 16b.

The inner slits 15b and 16b of the shutter plates 10 and 11 are the outer slits 15a and 16b.
The peripheral speed becomes slower than that of a, but the slits 15b and 16b
Since the slit width is narrow, the exposure amount of each continuous shooting screen 24a to 24h is kept constant. Further, if the shutter plates 10 and 11 are rotated once at a constant speed and there is a possibility that the shutter opening time when shooting each frame of the continuous shooting screen may become long, the drive pulse supplied to the stepping motor 12 The frequency can be varied, and the shutter plates 10 and 11 can be rotated at high speed at the moment of exposure. Further, the interval of each exposure can be given an arbitrary pattern by controlling the stepping motor.

When the shutter plates 10 and 11 rotate once and each slit returns to the original position, the driving of the stepping motor 12 is stopped and one continuous shooting is completed. In order to always stop the shutter plates 10 and 11 at the origin position, for example, a reflection piece for origin detection is fixed to the shutter plate 10, and this is detected by a reflection type photo sensor to stop the stepping motor 12. Should be done. At this time, the shutter plate 10 can be accurately returned to the original position by passing the shutter plate 10 slightly past the original position and then reversely returning the shutter plate 10 to the original position.

In this way, when the continuous shooting screens 24a to 24h of 8 frames are photographed on the film 19, the film feeding mechanism 32 is actuated in response to the photographing completion signal, the motor 30 is driven, and the film 19 is fed. Be started. Then, when the signal plate 37 and the photo sensor 38 detect the feeding of one frame of 35 mm full size, the motor 30 is stopped and the standby state for the next photographing is set.

The film 19 photographed as described above
When printing in economy size or 2L size, which is widely used in
Is obtained. The partition plate 2 of the exposure frames 21a to 21d
Since a gap is provided between the leading edge of 0 and the film 19, it is possible to prevent the exposure of the end portions of the adjacent frames from overlapping and to prevent a black frame (unexposed) between the frames during printing. That is, when printing is performed by double exposure between the continuous shooting screens 24a to 24h, this portion becomes whitish, and a preferable continuous shooting photograph can be obtained. Also, since it becomes a continuous photo of one continuous shot, each frame is arranged side by side over time, which is advantageous in terms of reproducibility of continuous shooting scenes, and continuous shooting of a size that is easy to appreciate. Prints can be obtained at low cost.

In the embodiment described above, the number of shutter plates is two, but four shutter plates 42, 43, 44, 45 can be used as shown in FIG. Gears 42a, 43a, 44 are formed around these outer circumferences.
a and 45a are formed, and the gear 42a and the gear 44 are formed.
a, the gear 43a and the gear 45a mesh with each other. The drive gear 47 of the stepping motor 46 meshes with the gear 42a and the gear 43a. Also,
The shutter plates 42, 43, 44 and 45 have 45
The slits 42b, 43b, 44b, 45 are shifted by °.
b is formed.

When the stepping motor 46 is driven in association with the shutter button release operation and the drive gear 47 is rotated in the counterclockwise direction, the shutter plates 42 and 43 meshing with the drive gear 47 are rotated in the clockwise direction, respectively. , Gear 42
a, 43a, 44a, 45a through the shutter plate 44,
45 is rotated counterclockwise. Thereby, first, the slit 42b sequentially opens and closes the exposure openings 51 and 52, and after the slit 42b finishes opening and closing the exposure opening 52, the slit 43b opens and closes the exposure openings 53 and 54. And
After the slit 43b finishes opening and closing the exposure opening 54,
The slit 44b sequentially opens and closes the exposure openings 55 and 56,
Subsequently, the slit 45b opens and closes the exposure openings 57 and 58. As a result, it is possible to obtain a print photograph similar to that in the above embodiment.

In the above, an example has been described in which one frame of 35 mm full size screen is used for one continuous shooting, and a total of eight continuous frames of upper and lower frames are photographed therein. However, one continuous shooting has been described. 35mm full size screen 2
The number of frames may be set to three or five, or the number of continuous shooting screens may be set to three or five per one 35 mm full-size screen. Further, as the shutter mechanism, it is possible to use not only the shutter mechanism using the two or four shutter plates in the rotary type as described above but also various ones.

Further, in the above embodiment, two lens plates in which four lenses are integrally formed are used, but four lens plates in which two lenses are integrally formed or eight lenses are integrated. One molded lens plate may be used.

[0028]

As described above, according to the continuous shooting camera of the present invention, slit-like openings are formed in a plurality of discs having a number smaller than the number of exposure openings, and the corresponding exposure openings are sequentially rotated by rotating the openings. Since the number of parts is reduced by a simple mechanism, the cost can be reduced, the time sequence of the continuous shooting screens can be easily understood, and the exposure accuracy of each continuous shooting screen can be easily adjusted. Further, since the exposure openings are arranged in two rows in the film feeding direction in three rows or more in each row, it is possible to increase the number of continuous shooting screens photographed in one continuous shooting and increase the number of single shooting in one film. The continuous shooting can be performed, and the width of the camera can be made compact.

[Brief description of drawings]

FIG. 1 is a schematic view of a main part of a continuous shooting camera using the present invention.

FIG. 2 is an external view of the continuous shooting camera.

FIG. 3 is a diagram illustrating the operation of a shutter plate.

FIG. 4 is a cross-sectional view of the main parts of the continuous shooting camera in FIG.

FIG. 5 is an explanatory diagram of a film in which a continuous shooting screen is shot.

FIG. 6 is an explanatory diagram showing an example of a print photograph obtained by the continuous shooting camera of the present invention.

FIG. 7 is an operation explanatory view of another embodiment using four shutter plates.

[Explanation of symbols]

 3a to 3h Photographic lens 4,5 Lens plate 6a to 6h Exposure aperture 10, 11, 42, 43, 44, 45 Shutter plate 12, 46 Stepping motor 15a, 15b, 16a, 16b Slit 19 Film 24a to 24h Continuous shooting screen

Claims (1)

[Claims] 1. A plurality of exposure openings arranged in two rows along the feeding direction of the film in three rows or more, a plurality of disc-shaped shutter plates less than the number of the exposure openings, and these shutter boards. Drive means for rotating the shutter plates at the same time, and an opening formed in each of the shutter plates for performing exposure across a predetermined position of the exposure openings during one rotation of each shutter plate. A continuous shooting camera.