JP2818706B2 - Continuous shooting camera - Google Patents

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 performs a plurality of shots at short time intervals by one release operation.

[0002]

2. Description of the Related Art If a moving subject is sequentially photographed with a time lag, a photographic image in which the movement stops at each photographing moment can be obtained. Therefore, 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, as in a single-lens reflex camera, it is only necessary to wind up the film one frame at a time by a motor and drive the shutter in synchronization with this. However, since the film is wound up at a high speed, the sound is noisy, and there is a problem in a scene requiring quietness such as a golf swing. If the number of frames to be used for one continuous shooting is increased, the consumption of the film increases, and it is not possible to perform many continuous shootings with one film. Further, since a print photograph is usually divided into frames, there is a problem that even a continuous shooting scene becomes a separate print photograph and takes time to organize.

[0004] 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, there has been proposed a continuous shooting camera in which a single release operation sequentially performs shooting through a plurality of exposure apertures. In the camera disclosed 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 disclosed in the latter publication has a configuration in which the continuous shooting screens are arranged in a "field" shape through four exposure openings, and one rotary type shutter plate is rotated once. Thus, a continuous shooting screen of four frames shifted in time is shot.

[0005]

However, in the case where the shutter blade and the spring device are provided for each of the plurality of exposure apertures, each shutter blade is driven by each spring device, so that the structure is complicated and the number of parts is large. It is difficult to reduce the size, and it is also difficult to make the drive characteristics of all the shutter blades uniform, and there is a problem that the exposure time and the continuous shooting interval of each continuous shooting screen tend to vary. In the case of rotating one shutter plate and photographing a plurality of continuous shooting screens at the same distance from the center of rotation, the number of continuous shooting screens shot in one continuous shooting may be increased. Not only is it difficult, but there is a drawback in that the print order is arranged in a “ta” shape, so that the temporal order of the continuous shooting screen is difficult to understand.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has a simple mechanism, the number of parts is small, the size is easily reduced, and the exposure accuracy of each continuous photographing screen is easily adjusted. It is an object of the present invention to provide a continuous shooting camera in which the number of continuous shooting screens shot by the continuous shooting is large and the temporal order of the continuous shooting screen is easy to understand.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has two or more exposure openings arranged in two lines along the film feeding direction, and the number of the exposure openings is smaller than the number of the exposure openings. A plurality of disk-shaped shutter plates; driving means for simultaneously rotating these shutter plates; and a plurality of shutter plates formed on each of the shutter plates. And an opening for performing exposure across it.

[0008]

FIG. 2 shows the appearance of a continuous shooting camera according to the present invention.
Three lenses 3h are mounted in two rows vertically, and the optical axes of the lenses are parallel. Shooting lens 3a ~
3d is formed integrally with one lens plate 4 formed of a transparent resin such as acrylic,
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 photographing lenses 3a to 3h is fixed inside the camera body 2. The inner diameters of the exposure openings 6a to 6h are all equal. Shafts 8 and 9 are implanted on the shutter substrate 7 and rotatably support disk-shaped shutter plates 10 and 11, respectively. Gears 10a, 11a are formed on the outer periphery of the shutter plates 10, 11 over the entire periphery. A stepping motor 12 is fixed on the back side of the shutter substrate 7. A driving gear 13 fixed to the shaft of the stepping motor 12 meshes with a gear 11 a of the shutter plate 11, and also drives the shutter plate 10 via an idle gear 14. It is in mesh with the gear 10a.

The shutter plates 10, 11 are formed with two slits 15a, 15b, 16a, 16b, respectively. The slits 15a and 15b are used for the shutter plate 10.
On the same line passing through the center of. Similarly slit 16
a and 16b are also on the same line segment passing through the center of the shutter plate 11. The slits 15a and 15b or the slits 16a and 16b are not necessarily provided for the shutter plates 10 and 1 respectively.
It is not necessary to be on the same line segment passing through the center of one, and it is also possible to positively shift in consideration of the photographing timing.

These slits 15a, 15b, 16
The slit length of a and 16b (the 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 (width in the circumferential direction of the shutter plate) of each outer slit 15a, 16a and the inner slit 15
The slit widths of b and 16b are changed according to the distance from the axes 8 and 9, respectively.
Assuming that the slit width of the slits a and 16a is 1 mm, the slit width of the inner slits 15b and 16b is about 0.7 mm.

[0012] As shown in FIG. 3, by rotation of the shutter plate 10 from the origin position P ₀ where the slit 15a is illustrated so on are moved in a clockwise direction, the exposure opening 6a when passing through the first exposure position P ₁ Is opened and closed. Shutter plate 10 continues to rotate, the slit 15b is exposed opening 6b is opened and closed when it passes through the second exposure position P _2. 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 as the shutter plate 10 rotates clockwise, the shutter plate 11 rotates counterclockwise. Thereby, the slit 16a of the shutter plate 11 is moved to the origin position Q _0.
Rotated from to fifth exposure position Q _5, a slit 15a is exposed opening 6e is opened and closed after passing through the fourth exposure position P _4. 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 in the counterclockwise direction.
At the exposure position Q ₆ , the seventh exposure position Q ₇ , and the eighth exposure position Q ₈ , the exposure openings 6f, 6g, 6 are formed by the slits 16a, 16b.
h are sequentially opened and closed. Note that the stepping motor 12
By the drive control described above, the time from opening and closing of the first exposure opening 6a to opening and closing of the last exposure opening 6h is about 1 second.

As shown in FIG. 4, between the cartridge loading chamber 17 and the winding chamber 18 provided in the camera body 2 are separated by a partition wall 20 along the direction in which the film 19 is fed. Eight exposure frames 21a to 21h are formed four by two in the upper and lower stages (exposure frames 21e to 21h are not shown). The horizontal length from the exposure frame 21a to the exposure frame 21d and the horizontal length from the exposure frame 21e to the exposure frame 21h are almost the same as the horizontal length of one 35 mm full-size screen. In addition, each of the exposure frames 21a to 21h
Is about half the length of a 35mm full size screen,
When photographing is performed through the exposure frames 21a to 21h, as shown in FIG.
8 frames of continuous shooting screens 24a to 2a in a frame 22a
4h is exposed in two steps, four frames at a time.

As shown in FIG. 5, the exposure frames are 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 is determined. This is because vignetting around the screen due to the opening range 25 of the negative mask smaller than the screen 22a during printing is considered.

As shown in FIG. 1, the film 19 is wound up by rotating a spool 28 provided in the winding chamber 18 in a counterclockwise direction, and is pulled out from the patrone 29 loaded in the patrone chamber 17. Spool 28
Has a built-in motor 30 for film winding, and its driving force is transmitted to a 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 rewind fork 35 via the gear 34 when the film is unwound.

A sprocket 36 is engaged with the film perforation 19a, and is rotated by feeding the film 19. The sprocket 36 is integrally connected with a signal plate 37 having a radially formed through-hole slit.
The rotation amount of the sprocket 36 is detected by monitoring the rotation of the sprocket 36 with the photo sensor 38. When the film is wound, the drive of the motor 30 is stopped when it is detected by the signal plate 37 and the photo sensor 38 that the feed amount of the film 19 has reached one frame of 35 mm full size.

The operation of the continuous shooting camera having the above configuration will be described. After the film 19 is loaded, when the shutter button 40 shown in FIG.
2 starts driving, and the shutter plate 10 rotates clockwise in FIGS. 1 and 3 via the drive gear 13 and the idle gear 14. At the same time, the shutter plate 11 rotates counterclockwise via the drive gear 13.

When 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 , P ₄ , the slits 15 a, 15 b open and close the exposure openings 6 a, 6 b, 6 c, 6 d sequentially, and the film 19. , The continuous shooting screens 24a, 24b, 24c, 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 slits 15b, 16b inside the shutter plates 10, 11 are connected to the slits 15a, 16
Although the peripheral speed is slower than a, the slits 15b, 16b
, The exposure amount of each of the continuous shooting screens 24a to 24h is kept constant. If the shutter plates 10 and 11 are rotated once at a constant speed, and the shutter opening time for photographing each frame of the continuous shooting screen may become long, the driving pulse supplied to the stepping motor 12 may be increased. May be varied, and the shutter plates 10 and 11 may be rotated at a high speed at the moment of exposure. Also, the interval between each exposure can have an arbitrary pattern by controlling the stepping motor.

When the shutter plates 10 and 11 make one rotation and each slit returns to the origin position again, the driving of the stepping motor 12 stops 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 detecting the origin is fixed to the shutter plate 10 and detected by a reflection type photo sensor to control the stop of the stepping motor 12. Should be performed. At this time, once the shutter plate 10 is slightly passed through the origin position, and then the shutter plate 10 is reversed and returned to the origin position, the shutter plate 10 can be accurately returned to the origin position.

When the continuous shooting screens 24a to 24h of eight frames are shot on the film 19 in this manner, the film feeding mechanism 32 is operated upon receiving the shooting completion signal, the motor 30 is driven, and the feeding of the film 19 is started. Be started. When the signal board 37 and the photo sensor 38 detect the feeding of one frame of 35 mm full size, the motor 30 is stopped and the apparatus enters a standby state for the next photographing.

The film 19 photographed as described above
When printing in the economy size or the 2L size, which is widely used, a print photo 41 as shown in FIG.
Is obtained. In addition, the partition plate 2 of the exposure frames 21a to 21d
Since a gap is provided between the leading edge of the frame 0 and the film 19, the exposure of the ends of the adjacent frames is superimposed, thereby preventing 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. In addition, since continuous shooting is performed by one continuous shooting, and each frame is arranged side by side over time, continuous shooting is advantageous in terms of reproducibility of continuous shooting scenes, and continuous shooting with 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. However, as shown in FIG. 7, four shutter plates 42, 43, 44, and 45 can be used. The gears 42a, 43a, 44
a, 45a are formed, and the gear 42a and the gear 44
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,
Each of the shutter plates 42, 43, 44, 45 has 45
The slits 42b, 43b, 44b, 45
b is formed.

When the stepping motor 46 is driven in conjunction with the release operation of the shutter button and the drive gear 47 is rotated in the counterclockwise direction, the shutter plates 42 and 43 meshing therewith rotate in the clockwise direction, respectively. , Gear 42
a, 43a, 44a, 45a through the shutter plate 44,
45 is rotated counterclockwise. As a result, 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 has opened and closed 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, a print photograph similar to that of the above-described embodiment can be obtained.

In the above, an example has been described in which one frame of a 35 mm full-size screen is used in one continuous shooting, and a total of eight frames of a continuous shooting screen are photographed in the upper and lower two steps. 35mm full size screen 2
The number of frames can be set to three or five, or the number of frames of the continuous shooting screen can be set to three or five for one 35 mm full size screen. Also, as the shutter mechanism, not only a shutter mechanism using two or four shutter plates in a rotary manner as described above, but also various other shutter mechanisms can be used.

In the above embodiment, two lens plates integrally formed with four lenses are used. However, four lens plates integrally formed with two lenses or eight lenses are integrally formed. One molded lens plate may be used.

[0028]

As described above, according to the continuous shooting camera of the present invention, slit-shaped openings are formed in a plurality of discs having a smaller number of exposure openings, and the corresponding openings are sequentially rotated by rotating the slit-shaped openings. As a result, the number of parts is reduced with 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 made uniform. Further, since the exposure apertures are arranged in three rows or more in two rows in the film feeding direction, the number of continuous shooting screens shot by one continuous shooting can be increased, and more than one film can be obtained. Can be performed continuously, and the width of the camera can be made compact.

[Brief description of the 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 an explanatory diagram of an operation of a shutter plate.

FIG. 4 is a sectional view of a main part of the continuous shooting camera in FIG. 2;

FIG. 5 is an explanatory diagram of a film obtained by photographing a continuous shooting screen.

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

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 9/10 G03B 15/16

Claims (1)

(57) [Claims] An exposure opening arranged in three or more rows in two rows along a film feeding direction, a plurality of disk-shaped shutter plates having a smaller number of exposure openings, and these shutter plates are provided. A driving means for rotating the shutter plate at the same time; and an opening formed in each of the shutter plates for performing exposure across a predetermined one of the exposure openings during one rotation of each shutter plate. Continuous shooting camera.