JP3460852B2 - 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, and more particularly to a continuous shooting camera for shooting a subject on a split screen in one frame of a photographic film by one release operation.

[0002]

2. Description of the Related Art Conventionally, a continuous shooting camera which sequentially shoots a moving subject with a time lag has been put into practical use. According to this camera, a photographic image in which motion is stopped is obtained at each shooting moment. Therefore, the form at each moment can be observed as a still image in golf or baseball swings, for example.

As such a continuous shooting camera, for example, there is one proposed in Japanese Patent Application Laid-Open No. 2-105132. This continuous shooting camera divides one frame of a photographic film into four split screens by four exposure frames, and arranges each split screen in a "T" shape. It is a rotary type with one release operation. One shutter plate makes one rotation, and the slits formed in this shutter plate sequentially traverse the taking lenses provided in each of the four exposure frames, so that a time-shifted four continuous shooting screen is photographed. It is supposed to be shot in one frame of the film.

[0004]

However, since the conventional continuous shooting camera can shoot only the number of divided screens, it is attempted to shoot an object having a long operation time with a short continuous shooting interval. However, there is a drawback that it cannot be applied because there are not enough split screens. Such a problem can be solved by increasing the number of split screens, but this method makes it impossible to shoot an image sharply because the area of one screen becomes small, and the shooting lens also has a number of split screens. Therefore, there is a problem in the arrangement space because a large number of them must be arranged within the frame of one frame of the photographic film.

The present invention has been made in view of the above circumstances, and provides a continuous shooting camera capable of taking a picture of the number of split screens or more without increasing the number of split screens of one frame of a photographic film. The purpose is to

[0006]

In order to achieve the above-mentioned object, the present invention divides one frame of a photographic film into a plurality of screens, and photographs a subject continuously on each divided screen by one photographing. In a continuous shooting camera, a plurality of exposure frames having as many shooting lenses as the number of divided screens corresponding to the divided screens are arranged in front of each divided screen of the photographic film, and multiple exposure is performed for each divided screen. It is characterized in that means for enabling it are provided.

[0007]

According to the present invention, each divided screen of one frame of a photographic film divided by a plurality of exposure frames is subjected to multiple exposure by a shutter member having an exposure opening capable of multiple exposure. Thus, in the present invention, the number of divided screens is 2, 3, ...
Since it is possible to take double the number of pictures, it is possible to take more than the number of split screens without increasing the number of split screens.

In the continuous shooting camera according to the second aspect of the present invention, the strobe light emitting portion is controlled to emit light in synchronization with the exposure by the shutter member, so that an image can be sharply taken even in an environment where the exposure is insufficient.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a continuous shooting camera according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a front view showing an embodiment of an instant camera to which a continuous shooting camera according to the present invention is applied. At the center of the front surface of the instant camera body 10, four photographing lenses 12A, 12
B, 12C and 12D are arranged at a predetermined interval on a concentric circle of a shutter plate 14 described later. Further, the viewfinder 16 is arranged on the upper front surface of the camera body 10, the stroboscopic light emitting section 18 is arranged on the upper right corner on the front surface of the camera body 10, and the release button 20 is arranged on the upper surface of the camera body 10. There is.

The photographing lenses 12A to 12D are fixed to the front surface of a light-tight case 22 provided inside the camera body 10. A rear end of the light-tight case 22 is open, and a film package 25 accommodating a plurality of instant films 24 shown in FIG. 2 is detachably attached to the rear side of the camera body 10 behind the light-tight case. The light-tight case 22
The rear end surface is formed to have the same size as the film surface of the instant film 24. Furthermore, the light-tight case 22 is
A partition plate 26 fixed in a cross shape in the light-tight case 22,
Four exposure frames 30A, 30B, 30C, 30 corresponding to the taking lenses 12A to 12D, respectively, by 28.
It is divided into D. Therefore, the photograph taken by the taking lens 12A is transferred to the upper left split screen 24A of the instant film 24 corresponding to the exposure frame 30A, and the photograph taken by the taking lens 12B is upper right split screen corresponding to the exposure frame 30B. Imaged on 24B, shooting lens 12C
The photograph taken in is photographed on the lower right split screen 24C corresponding to the exposure frame 30C, and the photograph taken by the taking lens 12D is the lower left split screen 24D corresponding to the exposure frame 30D.
Are imprinted on each.

A disk-shaped shutter plate 14 is disposed on the front surface of the taking lenses 12A to 12D.
The shutter plate 14 is pivotally supported on a shaft 32 attached to the camera body 12. Further, exposure openings 34 and 36 are formed on the surface of the shutter plate 14. The exposure openings 34 and 36 are formed on the concentric circles of the shutter plate 14 so as to cross the front surfaces of the taking lenses 12A to 12D by the rotation of the shutter plate 14 and at the same time, at intervals so as not to overlap one taking lens. ing. A gear 15 is threaded on the entire circumference of the shutter plate 14, and the gear 15 is meshed with a gear 42 of a stepping motor 40 via a gear 38. Therefore, by driving the stepping motor 40, the shutter plate 14 can be rotated about the shaft 32.

As shown in FIG. 2, the stepping motor 40 is rotationally driven based on a drive pulse supplied from an ST / M driver (driver IC) 44. The driver IC 44 determines the number of pulse trains of drive pulses supplied to the stepping motor 40 and the frequency of the drive pulses to be CP.
Controlled by U46. Stepping motor 40
The rotation angle is controlled by the number of pulse trains supplied from the driver IC 44, and the rotation speed is controlled by changing the frequency of the drive pulse. Also, C
The PU 46 is driven by receiving a release signal from the release circuit 47.

A reflecting piece 48 is attached to the peripheral edge of the shutter plate 14, and this reflecting piece 48 is detected by a reflection type photo interrupter 50 when the shutter plate 14 is moved to a position directly below in FIG. The reflective photo interrupter 50 is attached to the camera body 10, and its detection signal is output to the CPU 46 shown in FIG. CPU46
When the detection signal is input, the driver IC4
4 is controlled to stop the stepping motor 40. The position of the shutter plate 14 at this time becomes the home position, and the exposure openings 34 and 36 of the shutter plate 14 are located between the taking lens 12A and the taking lens 12D as shown in FIG. The CPU 46 controls the strobe circuit 52 of the strobe light emitting section 18. The strobe circuit 52 is a CPU
46 controls the strobe light emission timing of the strobe light emission unit 18.

Next, the operation of the continuous shooting camera configured as described above will be described. When the camera is aimed at a moving subject and the release button 20 is pressed, the CPU 46 is driven by a release signal from the release circuit 47 to control the driver IC 44 and the strobe circuit 52. As a result, the stepping motor 40 is driven by the drive pulse output from the driver IC 44, and the shutter plate 1 is driven.
4 is rotated clockwise from the home position in FIG. Further, the strobe light emitting unit 18 emits light by a discharge voltage supplied from the strobe circuit 52 at a timing described later.

FIG. 3 shows a timing chart of opening / closing of the shutter and ON / OFF of stroboscopic light emission performed by one release operation, which will be described below with reference to FIG. When the shutter plate 14 starts to rotate, first, the exposure opening 34 crosses the front surface of the taking lens 12A, so that the divided screen 24A of the film 24 is exposed for the first time, and the strobe circuit is synchronized with the exposure. The discharge voltage is supplied from 52 to the strobe light emitting portion 18
Emits light. Next, after the exposure opening 34 passes through the taking lens 12A and the exposure opening 36 crosses the front surface of the taking lens 12A, the divided screen 24A is exposed for the second time, and the strobe light is synchronized with the exposure. The light emitting unit 18 emits light. Thereby, the divided screen 2 of the film 24
Two images are imprinted on 4A. In this way, the exposure apertures 34 and 36 are formed in the respective photographing lenses 12B to 12D.
, And the strobe light emitting section 18 emits light in synchronization with the exposure. Then, when the reflection type photo interrupter 50 detects the reflection piece 48, that is, when the shutter plate 14 makes one rotation, the shutter plate 14 stops.

Therefore, in this embodiment, the divided screens 24A to 24D of the four-divided film 24 are double-exposed,
As a result, eight continuous shot images are printed on one film 24, so that it is possible to take a picture of the number of split screens or more without increasing the number of split screens. Figure 4
[FIG. 8] is a continuous shooting screen when golf swings are continuously shot by the camera of the present embodiment. As shown in the figure, the divided screen 24A of the film 24 shows the addressed state and the start of the takeback, and the divided screen 24B shows the takeback intermediate state and the top position. Being photographed. Further, the split screen 24C shows a state in which the swing is started and the state at the moment of impact, and the split screen 24D shows a state in the middle of the follow swing and a state after the follow swing. In this embodiment, since the strobe light is emitted in synchronization with the exposure,
Even when shooting indoors where the amount of exposure light is insufficient, it is possible to shoot continuously shot images sharply.

Further, in the present embodiment, the frequency of the drive pulse output to the stepping motor 40 and the discharge interval of the discharge voltage supplied from the strobe circuit 52 to the strobe light emitting section 18 are changed to change the speed of movement of the subject. The rotation speed of the shutter plate 14 and the strobe light emission timing can be adjusted. In the present embodiment, one frame of film is divided into four divided screens, but the present invention is not limited to this, and the number of divided images can be set within the limits where the sharpness of the image and the space for disposing the photographing lens are allowed. good.
Further, in the present embodiment, two exposure openings are formed in the shutter plate, but it is possible to deal with even one by rotating or rotating the shutter plate in the normal direction or in the reverse direction. Further, in this embodiment, each divided screen is double-exposed, but it may be multiple-exposed. Further, in the present embodiment, the strobe light is emitted in synchronization with the shutter opening, but the strobe light may not be emitted when shooting in an environment in which the amount of exposure light is sufficient. In this embodiment, the continuous shooting camera of the instant camera has been described, but it may be applied to a camera using another film.

[0018]

As described above, according to the continuous shooting camera of the present invention, each divided screen of one frame of a photographic film divided by a plurality of exposure frames has an exposure opening that enables multiple exposure. Since multiple exposure is performed by the shutter member, it is possible to take a picture of more than the number of divided screens without increasing the number of divided screens of one frame of the photographic film.

Further, according to the present invention, since the stroboscopic light emitting section is controlled to emit light in synchronization with the multiple exposure by the shutter member, an image can be sharply taken even in an environment where the exposure light amount is insufficient.

[Brief description of drawings]

FIG. 1 is a front view of a continuous shooting camera according to the present invention including a partial breakage thereof.

FIG. 2 is a block diagram of a continuous shooting camera according to the present invention.

FIG. 3 is a timing chart of a shutter opening and strobe light emission.

FIG. 4 is an explanatory diagram of a continuous shooting screen when one frame of a photo film is divided into four split screens.

[Explanation of symbols]

10 ... Camera body 12A to 12D ... Photography lens 14 ... Shutter plate 18 ... Strobe light emission part 20 ... Release button 24 ... Instant film 24A to 24D ... Split screen 34, 36 ... Exposure aperture 40 ... Stepping motor 44 ... Driver IC 46 ... CPU

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-5-323428 (JP, A) JP-A-5-307208 (JP, A) JP-A-5-142619 (JP, A) JP-A-5- 72625 (JP, A) JP 5-45697 (JP, A) JP 4-269730 (JP, A) JP 3-35231 (JP, A) JP 2-105132 (JP, A) JP 62-9212 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G03B 19/07 G03B 7/00 G03B 15/00 G03B 15/05

Claims (2)

(57) [Claims] 1. A continuous shooting camera which divides one frame of a photographic film into a plurality of screens and continuously shoots a subject on each of the divided screens in a single shot. A continuous shooting camera, characterized in that a plurality of exposure frames having as many photographing lenses as the number of screens are arranged in front of each divided screen of the photographic film, and means for enabling multiple exposure for each divided screen. 2. The continuous shooting camera has a stroboscopic light emitting section,
2. The continuous shooting camera according to claim 1, wherein the stroboscopic light emitting unit is controlled so as to emit light in synchronization with the unit that enables the multiple exposure.