Sequential camera

Abstract: A continuous taking camera has a plurality of exposure chambers disposed linearly. Two shutter discs (10,11) to be rotated by a motor (12) are provided at the back of the exposure chambers. Each shutter disc (10,11) is formed with two movable shutter openings at positions different in distance from the rotation center of the shutter disc. When the motor (12) is energized by a release operation, the motor causes the two shutter discs to perform one rotation for sequentially opening and closing the exposure chambers starting from an outermost exposure chamber. A 35 mm full size original frame is divided in the longitudinal direction of the film into four original sub-frames. Scenes for eight original sub-frames are taken using the two full size original frames.

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous taking camera which can take the same subject a plurality of times at a predetermined time interval upon one release operation. 2. Description of Related Art Continuous taking is very convenient in the field of sport and the like since the forms of a subject at various time instants can be recorded as still images. Continuous taking by a single lens reflex camera is enabled by attaching a motor drive unit to the camera body, the motor drive unit winding a photographic film one frame after another at a high speed. Continuous taking using a motor drive unit has a film transporting speed limit of about five frames per second for feeding photographic film in the case of an original frame (36 x 24 mm) of 35 mm type full size. Furthermore, not only the operation of the film transporting mechanism and shutter unit generates very loud noises, but also a mechanism is necessary for synchronizing film transportation with shutter release, resulting in complicated structure and high cost. Still further, since five frames are used for each continuous taking, the amount of consuming a photographic film is large, and so the number of continuous takings allowed for a roll of photographic film is small. Further, a photographic paper is cut into separate photoprints of original frames so that even in the case of scenes of continuous taking, the photoprints are required to be set in the order of taking, when they are observed. In view of such background, as described in Japanese Patent Publication No.41-13352 and Japanese Patent Laid-open Publication No.2-105132, a continuous taking camera has been proposed wherein one original frame of 35 mm type full size is divided into four (2 x 2) original sub-frames, and four consecutive scenes are sequentially taken on the four original sub-frames in the order of clockwise or counter-clockwise direction upon one release operation. If a photographic film taken with such a continuous taking camera is printed, a single photoprint of L size (127 x 89 mm) contains four original sub-frames disposed in vertical and horizontal partition of the photoprint. The original sub-frames at the upper and lower sides taken at different time instants are difficult in discriminating the order of continuous taking. In addition, the size of each original sub-frame is too small to observe it. If the size of each original sub-frame is made the same as the L size, an enlargement printing is required. The enlarged photoprint may be cut into each original sub-frame. Otherwise a particular trimming printing may be requested. It is inconvenient by any conventional way to respectively to allow easy observation of photoprints. The above-described continuous taking camera uses independent taking lenses for respective original sub-frames. Thus, the mounting position of each taking lens should be adjusted precisely. If the adjustment is poor, each original sub-frame has a different focal point. A photographic printer uses a film mask to cut the periphery of an original frame. if four original sub-frames are taken on an original frame of 35 mm full size, the printed four original sub-frames each have a main subject at the position displaced from the central area. A continuous taking camera described in the above-cited Japanese Patent Publication No.41-13352 takes a plurality of original sub-frames by sequentially activating shutter blades provided for each exposure chamber. This shutter unit requires shutter blades for each exposure chamber, resulting in an increase of components and hence high cost. A continuous taking camera described in the above-cited Japanese Patent Laid-open Publication No.2-105132 has a single rotatable shutter disc with one movable shutter opening or slit. Each stationary shutter opening is disposed along a circular locus of the movable shutter opening. Therefore, if a proper size of original sub-frame is intended, the number of original sub-frames is restricted. SUMMARY OF THE INVENTION It is therefore a principal object of the present invention to provide a continuous taking camera capable of taking continuous scenes to obtain a photoprint of sufficiently large size without requiring particular printing services. This object is solved with a continuous taking camera comprising the features of claim 1. Advantageous embodiments of the continuous taking camera according to the present invention are defined in the dependent claims. Further particular objects of the present invention are to provide a continuous taking camera for taking continuous scenes on a photographic film ensuring easy discrimination of the order of taking, thereby being capable of taking continuous scenes while making each main subject to be placed in the same position within each original sub-frame and of easily adjusting the mounting position of a taking lens. It is another particular object of the present invention to provide a continuous taking camera having a shutter unit of simple structure and less number of components, which camera has no limit of the number of original sub-frames. A panorama photography prevails nowadays. In the panorama photography, an image is taken with a wide angle lens on a laterally elongated panorama size original frame (36 x 13.7 ± 0.4 mm) defined by light-shielding the upper and lower sides of an original frame (36 x 24 mm) of 35 mm full size. This panorama size original frame is printed into a photoprint of a panorama size (254 x 89 mm) corresponding to the size of two juxtaposed photoprints of L size (127 x 89 mm). The above and other objects of the present invention are achieved, while taking panorama print services into consideration, by dividing a laterally elongated panorama size original frame into a plurality of original sub-frames in the longitudinal direction, and by using the divided original sub-frames sequentially in the longitudinal direction. According to a preferred embodiment, consecutive eight scenes are sequentially taken by one release operation on eight original sub-frames formed by two panorama size original frames each divided into four original sub-frames. There is used a lens plate having a plurality of taking lenses integrally formed thereon. Use of this lens plate allows the lens mounting operation to be carried out only once, resulting in an easy adjustment of focal points of respective lenses. According to another preferred embodiment of the present invention, the widths of the inner two original sub-frames are made narrower than that obtained when a panorama original frame is divided into four equal areas, whereas the right and left outer two original sub-frames are made wider, and the optical axes of the taking lenses therefor are shifted from the centers of the original sub-frames toward the center of the panorama original frame. When printing a photographic film using a mask, the outer side portions, in the longitudinal direction, of the film are partially cut. However, with the above-described arrangement, the positions of main subjects on the right and left two original sub-frames are made same as those of the inner two original sub-frames on a photoprint. According to an embodiment of the continuous taking camera of the present invention, a plurality of scenes are taken at small timing intervals on a plurality of original sub-frames obtained by dividing a panorama size original frame in the longitudinal direction. Therefore, presently available panorama print services can be used. According to the panorama print services, a photoprint is made at a magnification factor two times as large as an ordinary photoprint. Therefore, the sub-frame of a photoprint made from an original sub-frame has a size sufficient for observing it easily. In addition, since each printed sub-frame is disposed in the order of time sequence, the order of continuous taking can be easily understood. According to another preferred embodiment of the present invention, eight original sub-frames constructed of upper and lower rows each having four original sub-frames are formed within a 35 mm full size original frame. In this embodiment, the amount of used film can be made small. The order of taking scenes is same both for the upper and lower rows, leaving no fear of observing it erroneously. Also in this embodiment, the sizes of the four outer original sub-frames are made wider, and the optical axes of the corresponding taking lenses are shifted to inside. According to the preferred embodiment of the present invention, eight stationary shutter openings are disposed in the film transporting direction. First and second shutter discs are provided for opening and closing the eight stationary shutter openings. The first shutter disc sequentially opens and closes the four stationary shutter openings, and then the second shutter disc sequentially opens and closes the remaining four stationary shutter openings. The shutter discs are formed at their peripheries with teeth meshing each other. The first shutter disc is driven by a motor, and the second shutter disc is rotated in cooperation with the former. Each shutter disc is formed with a plurality of movable shutter openings or slits at positions different in distance from the rotation center of the disc. Each movable shutter opening sequentially passes the four stationary shutter openings to expose a photographic film. The rotation center of the first shutter disc is positioned over the four stationary shutter openings, and the rotation center of the second shutter disc is positioned below the remaining four stationary shutter openings. With such an arrangement, the two lens plates each having four stationary shutter openings can be disposed nearer to each other. At the time of exposure, the motor is driven at a high speed so that a high shutter speed can be obtained without shortening the time interval between each exposure. According to the shutter unit of a continuous taking camera according to embodiments of the present invention, the structure can be simplified, and the rotation speed of the shutter disc can be easily adjusted at each rotary phase. Thus, it is easy to set the time interval between each exposure and each shutter speed. BRIEF DESCRIPTION OF THE DRAWINGS The above objects and advantages of the present invention will become more apparent from the following detailed description when read in connection with the accompanying drawings, in which: Fig.1 is a perspective view showing a continuous taking camera according to an embodiment of the present invention; Fig.2 is a perspective view showing the outline of the structure of the continuous taking camera shown in Fig.1; Fig.3 is a lateral cross section of the continuous taking camera shown in Fig.1; Fig.4 illustrates the operation of a shutter disc; Fig.5 is a block diagram showing the electrical connection of the continuous taking camera shown in Fig.1; Fig.6 is a timing chart illustrating the rotation of the shutter disc; Fig.7 shows a photographic film taken with the continuous taking camera shown in Fig.2; Figs.8 and 9 show photoprints obtained using continuously taken original sub-frames; Fig.10 shows the main part of a continuous taking camera which takes upper and lower rows of four original sub-frames; Fig.11 shows a photographic film taken with the continuous taking camera shown in Fig.10; and Fig.12 is a cross section showing the main part of an improved version of the continuous taking camera shown in Fig.10, which will not provide a black stripe of the border between original sub-frames. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to Fig.1, eight taking lenses 3a to 3h are mounted horizontally on the front side of a camera body 2. The optical axes of the taking lenses 3a to 3d and those of the taking lenses 3e to 3h are parallel spaced by a predetermined distance L1. The taking lenses 3a to 3d are formed integrally on a single lens plate 4 molded using transparent resin such as acrylic resin. Similarly, the taking lenses 3e to 3h are formed integrally on a lens plate 5. As shown in Fig.2, a shutter base plate 7 is fixedly mounted within the camera body 2. The shutter base plate 7 is formed with eight circular stationary shutter openings 6a to 6h corresponding in position to the taking lenses 3a to 3h. The inner diameter of each of the stationary shutter openings 6a to 6h is the same for all openings. Shafts 8 and 9 are mounted on the shutter base plate 7 at the positions higher and lower than a straight line passing through the centers of the stationary shutter openings 6a to 6h, the shafts 8 and 9 rotatably supporting shutter discs 10 and 11, respectively. The distances from the shaft 8 to the stationary shutter openings 6a and 6d are set equal, and the distances to the stationary shutter openings 6b and 6c are set equal. Similarly, the distances from the shaft 9 to the stationary shutter openings 6e and 6h are set equal, and the distances to the stationary shutter openings 6f and 6g are set equal. Teeth 10a, 11a are formed on the outer peripheries of the shutter discs 10 and 11, the teeth being meshed with each other. A stepping motor 12 is fixedly mounted on the front side of the shutter base plate 7. A drive gear 13 coaxially fixed on the shaft of the stepping motor 12 meshes with the teeth 10a of the shutter disc 10. A reflection type photosensor 14 is mounted on the shutter base plate 7, the photosensor photoelectrically detecting a reflection piece 17 fixed to the shutter disc 10 via an opening 7a of the shutter base plate 7. As shown in Fig.4, the shutter discs 10 and 11 are formed each with two rectangular movable shutter openings or slits 15a, 15b, 16a, and 16b. The movable shutter openings 15a and 15b are aligned on the same straight line passing the rotation center of the shutter disc 10. Similarly, the movable shutter openings 16a and 16b are aligned on the same straight line passing the rotation center of the shutter disc 11. The movable shutter openings 15a and 15b, or 16a and 16b are not necessarily aligned on the same line, but they may be positively displaced from each other while considering the photographing timings. The length of the movable shutter openings 15a, 15b, 16a, and 16b in the radial direction is longer then the inner diameter of the stationary shutter openings 6a to 6h. The width WA of the outer movable shutter opening 15a in the circumferential direction becomes larger than the width WB of the inner movable shutter opening 15b according as the distance from the shaft 8 becomes longer. For example, let the width WA of the outer movable shutter opening 15a be 1 mm, then the width WB of the inner movable shutter opening 15b is about 0.7 mm. With this arrangement, it becomes possible for the movable shutter openings 15a and 15b to supply the same amount of exposure to a photographic film 20. The relation between widths of the movable shutter openings 16a and 16b is the same as that of the movable shutter openings 15a and 15b. As the shutter disc 10 rotates, the movable shutter opening 15a moves in the clockwise direction from its origin position P0 shown in Fig.4 and passes a first exposure position P1, when the stationary shutter opening 6a is opened and closed. As the shutter disc 10 further rotates, the movable shutter opening 15b passes a second exposure position P2, when the stationary shutter opening 6b is opened and closed. As the movable shutter openings 15b and 15a pass third and fourth exposure positions P3 and P4, respectively, when the stationary shutter openings 6c and 6d are opened and closed. As the shutter disc 10 starts rotating in the clockwise direction, the shutter disc 11 rotates in the counter-clockwise direction with the teeth 10a and 11a being meshed with each other. After the movable shutter opening 15a passes the fourth exposure position P4, the movable shutter opening 16a of the shutter disc 11 rotates from its origin position Q0 to a fifth exposure position Q5. When the movable shutter opening 16a passes the fifth exposure position Q5, the stationary shutter opening 6e is opened and closed. Since the shutter disc 10 rotates until the movable shutter openings 15a and 15b return to the origin position P0, the shutter disc 11 therefore continues to rotate in the counter-clockwise direction. Thus, when the movable shutter openings 16a and 16b pass six, seventh, and eighth exposure positions Q6, Q7, and Q8, the stationary shutter openings 6f, 6g, and 6h are opened and closed. The time from when the first stationary shutter opening 6a is opened and closed to when the last stationary shutter opening 6h is opened and closed, is selectively set either to 1 second or 2 seconds by selecting a rotation speed of the stepping motor 12. As shown in Fig.3, between a cassette receiving chamber 18 and a film take-up chamber 19 of the camera body 2, eight exposure chambers 21a to 21h are formed along the transporting direction of the photographic film 20 having a width of 35 mm, the eight exposure chambers being divided by partition walls. Exposure apertures for defining frame sizes are formed at the back of the exposure chambers 21a to 21h. The lateral length from the exposure chamber 21a to the exposure chamber 21d and the lateral length from the exposure chamber 21e to the exposure chamber 21h each are the same as the lateral length of one original frame of 35 mm full size. The vertical length of each exposure chamber 21a to 21h is substantially one half the vertical length of one original frame of 35 mm full size, and each exposure chamber 21a to 21h is set so as to expose the area central in the vertical direction of each frame of the photographic film 20. When taking images using such exposure chambers 21a to 21h, as shown in Fig.2, four original sub-frames 24a to 24d and four original sub-frames 24e to 24h are formed in two full size frames 22a and 22b. A laterally elongated image frame having the four original sub-frames 24a to 24d or 24e to 24h has the same size as the panorama size frame (e.g., 13.7 ± 0.4 mm x 36 mm) which is obtained when taking an image while light-shielding the upper and lower sides of a 35 mm full size original frame by about 5 mm width. A relatively large space is provided by a central partition wall 25 between the original sub-frame 24d and original sub-frame 24e as illustrated in Fig. 3. An area between original sub-frames provides a black stripe when printed, because the area is prevented from being exposed by the rear end faces of the partition walls. This black stripe may be removed if the rear end faces of the partition walls are spaced apart from the photographic film 20 to allow light to become incident on the border between original sub-frames. The positions of the exposure chambers are set such that the widths of four original sub-frames 24a, 24d, 24e, and 24h become longer than the widths of the other four original sub-frames 24b, 24c, 24f, and 24g. Reference numeral 26 represents a film pressure plate. As shown in Fig.2, the photographic film 20 is wound up while a spool 28 mounted on the film take-up chamber 19 rotates in the counter-clockwise direction, and pulled out of a cassette 29 loaded within the cassette receiving chamber 18. A film winding motor 30 is mounted within the spool 28, the drive force of the motor 30 being transmitted via a gear 31 to a film transporting mechanism 32. Receiving the drive force from the gear 31, the film transporting mechanism 32 drives the spool 28 via a gear 33 when winding the film, and drives a fork 35 via a gear 34 when rewinding the film. A sprocket wheel 36 engages with perforations 20a and is rotated while the photographic film 20 is transported. A rotary encoder 39 coupled to the sprocket wheel 36 is constructed of a signal plate 37 with slits being formed radially, and a photosensor 38 for photoelectrically detecting the rotation of the signal plate 37. The photosensor 38 detects the passing slits when winding the film. Fig.5 is a block diagram showing the circuit arrangement of the continuous taking camera described above. The continuous taking sequence is managed by an MPU 40 which starts the sequence upon reception of a release signal from a release signal generator 42 when a shutter button 41 is depressed. A continuous-taking interval setting circuit 43 sets an eight frames per second for continuous taking or a four frames per second for continuous taking, in accordance with a setting position of a frame number setting knob 44. The number of settings of the continuous taking speed may be increased. An R/L mode selecting circuit 45 selects either a normal rotation direction or a reverse rotation direction of the shutter discs 10 and 11 for the continuous taking, in accordance with the setting position of an R/L setting knob 46. When a scene is continuously taken in which a main subject moves toward the right, e.g. a right-handed person playing golf, the R/L setting knob 46 is set to an index R. Then, the R/L mode selecting circuit 45 supplies MPU 40 a rightward moving mode signal. When a scene is continuously taken in which a main subject moves leftward, e.g. a left-handed golf player, the R/L setting knob 46 is set to an index L so that a leftward moving mode signal is supplied to MPU 40. A program ROM 48 stores a continuous taking sequence program under which a continuous taking sequence is executed in accordance with signals from the continuous-taking interval setting circuit 43 and R/L mode selecting circuit 45. Upon reception of a control signal and clock signal from MPU 40, a driver IC 50 supplies drive pulses to the stepping motor 12. As well known, the stepping motor 12 rotates in proportion to the number of supplied drive pulses, so that the rotary angle can be determined from the number of drive pulses and the rotation speed can be controlled from the frequency of drive pulses. The number of drive pulses supplied from the driver IC 50 to the stepping motor 12 is counted by a counter 51. MPU 40 monitors the count of the counter 51, and sends a control signal to the driver IC 50 each time the count reaches a predetermined value. In accordance with the control signal, the driver IC changes the frequency and polarity of drive pulses supplied to the stepping motor 12, to thereby control the speed and rotation direction of the stepping motor 12. When the shutter disc 10 returns to the origin position after one continuous taking sequence is completed, the counter 51 is supplied with a reset signal so that the count is cleared to "0". When the photosensor 14 detects the reflection piece 17 fixed on the shutter disc 10, it sends a detection signal to MPU 40. MPU 40 monitors the detection signal from the photosensor 14 to control to return the shutter disc 10 precisely to the origin position, as will be described later. MPU 40 counts the detection signal from the rotary encoder 39 to detect a film feed amount. When a predetermined number of detection signals from the rotary encoder 39 is counted while winding the film, the rotation of the motor 30 is stopped. In such a case, the photographic film 20 is advanced by two full size original frames. Reference numeral 53 represents a driver. The operation of the continuous taking camera constructed as above will be described. In continuously taking scenes of golf swings of a right-handed person at eight frames per second starting from a top position scene to a follow-through position scene, the R/L setting knob 46 is set to the index "R", and the frame number setting knob 44 is set to an index "8" for the eight frame mode. In this condition, the shutter disc 10 is rotated in the clockwise direction as seen in Fig.1, and the stepping motor 12 is controlled to drive at the eight frames per second for continuous taking. When a subject starts back-swinging and takes a top position, the shutter button 41 is depressed. Then, the stepping motor 12 starts being driven to rotate the shutter disc 10 by means of the drive gear 13 in the clockwise direction as seen in Figs.2 and 4, and the shutter disc 11 rotates in the counter-clockwise direction. As the shutter disc 10 rotates from the origin position P0 to the first to fourth exposure positions P1, P2, P3, and P4 shown in Fig.4, the movable shutter openings 15a and 15b sequentially open and close the stationary shutter openings 6a, 6b, 6c, and 6d to take scenes on the original sub-frames 24a, 24b, 24c, and 24d. Immediately after the scene for the original sub-frame 24d is taken, the shutter disc 11 reaches the fifth exposure position Q5 starting from the origin position Q0 and thereafter passes the sixth to eighth exposure positions Q6, Q7, and Q8. Therefore, the movable shutter openings 16a and 16b sequentially open and close the stationary shutter openings 6e, 6f, 6g, and 6h. Fig.6 is a timing chart illustrating the continuous taking at the eight frames per second. When the shutter button 41 is depressed at time "T=0", the driver IC 50 supplies drive pulses gradually increasing its frequency to the stepping motor 12, so that the stepping motor 12 is driven while being accelerated. As the stepping motor 12 is driven, the shutter disc 10 is rotated while being accelerated. When the shutter disc 10 rotates by 30 degrees from the origin position P0 at time T1, the movable shutter opening 15a reaches the position corresponding to the stationary shutter opening 6a to take the scene for the original sub-frame 24a. Thereafter, at time points T2, T3, T4,..., T8, the scenes for the original sub-frames 24b, 24c, 24d,..., 24h are taken. As apparent from the timing chart of Fig.6, the shutter discs 10 and 11 are rotated at a high speed before taking each scene, and rotated at a low speed after taking each scene. In this manner, it is possible to extend the continuous-taking interval to about 100 to 500 msec, while allowing an exposure time of about 4 msec for example. Since the rotary position of the shutter disc 10 corresponds to the count of the counter 51, such rotation control of the shutter discs 10 and 11 can be executed by the MPU 40 changing the frequency of drive pulses supplied to the stepping motor 12 each time the count of counter 51 reaches a predetermined value. The inner movable shutter openings 15b and 16b of the shutter discs 10 and 11 have a lower circumferential speed than the outer movable shutter openings 15a and 16a, in proportion to the distance from the rotation center. For example, the time Δt1 (shutter speed) required for the movable shutter opening 15a to pass the stationary shutter opening 6a is related to a time Δt2 required for the movable shutter opening 15b to pass the stationary shutter opening 6b, by the following inequality Δt1 < Δt2 Therefore, if the inner diameters of the stationary shutter openings 6a and 6b are set to values equal to the widths WA of the movable shutter openings 15a and 15b, the exposure amount for the original sub-frame 24b becomes larger than that for the original sub-frame 24a. Photoprints might be observed generally by placing them in an ordinary sequence, particularly inthe case of continuously taken photoprints. Therefore, a difference between exposure amounts would become conspicuous. In order to deal with this, in this embodiment, the widths WA of the outer movable shutter openings 15a and 16a are set wider than the widths WB of the inner movable shutter openings 15b and 16b, in proportion to the distance from the shafts 8 and 9, to thereby make the exposure amount constant for each of the original sub-frames 24a to 24h. Obviously, the constant exposure may be obtained alternatively by making the inner diameters of the stationary shutter openings 6b, 6c, 6f, and 6g over which the inner shutter openings 15b and 16b pass, smaller than those of the other stationary shutter openings. When the shutter discs 10 and 11 rotate by 360 degrees and return to the origin positions, the photosensor 14 photoelectrically detects the reflection piece 17. Then MPU 40 supplies several drive pulses to the stepping motor 12 via the driver IC 50. Thereafter, the stepping motor 12 is rotated slowly in the reverse direction. When the photosensor 14 again detects the reflection piece 17, the stepping motor 12 is stopped. By stopping the stepping motor 12 when the photosensor 14 detects the reflection piece 17 at the second time, the shutter disc 10 can be stopped precisely at the origin position. After taking scenes for the eight original sub-frames 24a to 24h on to the photographic film 20, the motor 30 is driven by the driver 53 to start feeding the photographic film 20. When the rotary encoder 39 detects that the film has been fed by two full size original frames, the motor is stopped to enter the stand-by state of next continuous taking. Fig.7 shows a photographic film 20 with scenes continuously taken. As already described, the four original sub-frames 24a to 24d as a whole has the same size of a panorama size original frame. Therefore, the original sub-frames 24a to 24d can be printed on a paper corresponding in size to two L size photoprints, by using panorama print services presently available. Each photoprint obtained from each one of the original sub-frames has also a sufficiently large size. Presently available panorama print services make photoprints on the one 35 mm full size frame unit basis. Therefore, as shown in Fig.8, photoprints 57 and 58 each having four consecutive frames are obtained from the original sub-frames 24a to 24h. If the photoprints 57 and 58 are coupled side by side, photoprints taking continuous scenes at one continuous taking are disposed side by side in time sequentially, thereby reproducing the continuous scenes in a very effective manner. In panorama print services, a film mask is used having an aperture size indicated by a two-dot chain line of Fig.7. This film mask causes optical vignetting at the end portions of the outer original sub-frames 24a and 24d. If the panorama size original frame is simply divided into four equal areas to form the four original sub-frames, such an optical vignetting causes a difference in the positions of main subjects on the outer original sub-frames from those on the inner original sub-frames. However, in this embodiment, even if optical vignetting is caused by the film mask, the positions of main subjects on the four original sub-frames are made constant. This is achieved by making the widths W1 of the outer original sub-frames 24a and 24d wider than the widths W2 of the inner original sub-frames 24b and 24c. In addition, the positions of the stationary shutter openings 6a and 6d are shifted inside relative to the centers of the original sub-frames 24a and 24d, as shown by broken lines in Fig.7. It is obvious that the centers of the stationary shutter openings 6a to 6d are aligned with the optical axes of the taking lenses 3a to 3d. Thus, the optical axes of the taking lenses 3a to 3d are shifted inside relative to the centers of the original sub-frames which are obtained by dividing the panorama size original frame simply into four equal areas, with the distance between adjacent optical axes being set to L1. Therefore, after printing using the film mask of panorama print services, the positions of main subjects on the outer original sub-frames 24a and 24d as well as those on the inner original sub-frames 24b and 24c become constant, obtaining continuously taken photoprints with neatly aligned main subjects. The continuous taking camera described above can continuously take scenes by reversely rotating the stepping motor 12. For example, in continuously taking the scenes of golf swings of a left-handed golf player, after the R/L setting knob 46 is set to an index "L", the shutter button 41 is depressed. If the leftward moving mode signal has been supplied from the R/L mode selecting circuit 45 when the release signal is entered, MPU 40 supplies the driver IC 50 a reverse drive control signal so that the driver IC 50 supplies drive pulses of reverse polarity to the stepping motor 12. As the stepping motor 12 is reversely rotated, the shutter disc 10 is rotated in the counter-clockwise direction, and the shutter disc 11 is rotated in the clockwise direction, to sequentially take scenes for the original sub-frames 24h, 24g, 24f,..., 24a. The original sub-frames 24h to 24a are printed to obtain two photoprints 60 and 61 such as shown in Fig.9. Each frame is disposed from the right side in time sequentially, allowing to reproduce continuously taken scenes easy to observe, following the motion of a left-handed player. In continuously taking scenes continuing to change for two seconds or so, the frame number setting knob 44 is set to an index "4". Then, MPU 40 sends a control signal for four frames per second to the driver IC 50. The drive IC 50 controls the shutter discs 10 and 11 while maintaining constant the rotation speeds of the shutter discs 10 and 11 during exposure and reducing the rotation speeds between exposure operations, so as to obtain the shutter speed Δt1 and Δt2 shown in Fig.6. As a result, as indicated by a broken line in Fig.6, a scene for the original sub-frame 24a is taken at time T1 and that for the original sub-frame 24b at T3, to thus taking the scenes for the eight original sub-frames 24a to 24h in 2 seconds. The scene taking interval can be changed by adjusting the rotation speed of the stepping motor 12. Therefore, taking into consideration that the motion speed of a scene is slow at the start and end of the motion, it is possible, for example, to set longer the time period between taking the scenes for the original sub-frames 24a and 24b, and the time period between taking the scenes for the original sub-frames 24g and 24h. Fig.11 shows an embodiment wherein within a single full size original frame, four original sub-frames 70a to 70d are taken at the upper row, and four original sub-frames 70e to 70h are taken at the lower row. This embodiment might be associated with a problem of small area of each original sub-frame. However, the amount of consuming a photographic film can be made small. Obviously, if the upper and lower rows are panorama-printed separately, sufficiently large size photoprints can be obtained such as shown in Fig.8. In this embodiment also, in order to make the positions of main subjects substantially the same for each original sub-frame, stationary shutter openings 71a, 71d, 71e, and 71h for the outer original sub-frames 70a, 70d, 70e, and 70h are shifted slightly inside, stationary shutter openings 71a to 71d for the original sub-frames 70a to 70d at the lower row are shifted slightly up, and stationary shutter openings 71e to 71h for the original sub-frames 70e to 70h at the upper row are shifted slightly down. In this manner, the positions of main subjects on the photoprints can be set generally at the center of each frame. Reference numeral 72 in Fig. 11 represents an aperture of the film mask, and the hatched portion indicates an area within which a scene is printed. The positions of original sub-frames shown in Fig.11 are realized by using a continuous taking camera whose main part is shown in Fig.10. In this continuous taking camera, two shutter discs 80 and 81 are mounted in the vertical direction, the two shutter discs 80 and 81 being superposed partially one upon the other. The shutter discs 80 and 81 are rotated by means of a drive gear 86 and intermediate gear 87, the drive gear 86 being rotated by a stepping motor 88. Four taking lenses 89 are integrally mounted on a lens base plate 82 at a constant pitch. Four taking lenses 90 are also integrally mounted on a lens base plate 83. Reference numerals 85a to 85h represent exposure chambers, and reference numeral 84 represents a stationary shutter opening. In this continuous taking camera, exposure is carried out in the order from the exposure chamber 85a to the exposure chamber 85h so as to create original sub-frames 70a to 70h as illustrated in Fig. 11. Fig.12 shows another embodiment wherein, in order to remove a black stripe at the border between adjacent original sub-frames, partition walls 91 defining exposure chambers 90a to 90d are spaced apart from a photographic film 92 by a distance L2. Furthermore, in order to allow light to be incident on the border portion of each original sub-frame, the rear end face of each partition wall 91 is tapered. In the above embodiments, two lens plates each mounting four lenses are used. Instead of this, four lens plates each mounting two lenses, or a single lens plate mounting eight lenses may also be used. Furthermore, in the above embodiments, two shutter discs are used to continuously take eight scenes on two 35 mm full size frames by one continuous taking. Instead of this, eight shutter discs each formed with a single movable shutter opening may be used to continuously take eight frame scenes disposed side by side. Still further, three 35 mm full size frames may be used at one continuous taking to continuously take twelve scenes on twelve original sub-frames. Further, the number of original sub-frames to be taken on a 35 mm full size frame may be two, three, five, and so on. In this case, the number of movable shutter openings and the number of slits are increased or decreased in accordance with the number of original sub-frames. In the above embodiments, although one stepping motor drives two shutter discs operating in cooperation with each other, each shutter disc may be driven independently by a separate stepping motor at desired timings. In the embodiment shown in Fig.2, a panorama size original frame is divided into a plurality of original sub-frames. Instead, a full size original frame may be divided into a plurality of vertically elongated original sub-frames. Even such original sub-frames can be printed into photoprints shown in Fig.8 by using the film mask shown in Fig.7 to cut the upper and lower portions of each frame. Film transportation may be manually performed by operating a film take-up dial. Although the present invention has been fully described by way of the preferred embodiments thereof with reference to the accompanying drawings, various changes and modifications will be apparent to those of working skill in this field. Therefore, unless otherwise these changes and modifications depart from the scope of the present invention, they should be construed as included therein.

Claims: A camera for taking a continuous image sequence, comprising: a plurality of exposure chambers (21a-h, 85a-h) being arranged at predefined exposure positions (P,Q) disposed linearly in the direction of transporting a photographic film (20) such that at least one full size original frame (22a,b) of said photographic film (20) is divided into a plurality of original sub-frames (24a-h, 70a-h), a plurality of taking lenses (3a-h, 89,90) each disposed in front of each of said plurality of exposure chambers (21a-h, 85a-h), and shutter means for allowing light from a continuous scene to become incident on each of said plurality of exposure chambers (21a-h, 85a-h), said shutter means being operated one time so as to take scenes for the plurality of original sub-frames (24,70) in an order sequentially arranged, wherein the shutter means comprises at least one rotatable shutter disk (10,11,80,81) characterized in that each shutter disk (10,11,80,81) has at least two shutter openings (15a,b, 16a,b) at different distances from the center of rotation of the disk, such that during the rotation of said disk each shutter opening (15a,b, 16a,b) passes respective two of said exposure positions (P,Q) so that the exposure chambers (21a-h, 85a-h) in a single row of said exposure positions (P,Q) are opened and closed in a sequential manner. A camera according to claim 1, wherein the shutter means comprises a fixed plate (7) for rotatably supporting the shutter disk (10,11,80,81), and a plurality of stationary shutter openings (3a-h, 84) before which the moveable shutter openings (15a,b, 16a,b) sequentially pass, the plurality of stationary shutter openings (3a-h, 84) being linearly formed in the fixed plate (7) in correspondence with each of the plurality of exposure chambers (21a-h, 85a-h). A camera according to claim 1, wherein the two moveable shutter openings (15a,b, 16a,b) being formed at positions on the same straight line passing through the centre (8,9) of the shutter disk (10,11,80,81) and different in distance from the rotation centre of the shutter disk (10,11,80,81) and passing before respectively two of the stationary shutter openings (3a-h,84). A camera according to claim 3, wherein the moveable shutter opening (15a,16a) formed at a longer distance from the rotation centre (8,9) has a longer side (WA) in the direction of motion of the moveable shutter opening (15a,16a). A camera according to any one of the foregoing claims, wherein each of said plurality of original sub-frames (24,70) has sizes obtained when dividing a panorama size original frame into a plurality of areas and the panorama size original frame has a size such that the upper end lower sides of the full size original frame are partially cut away therefrom. A camera according to any one of the foregoing claims, wherein each of the plurality of original sub-frames (70) has a size obtained when the full size original frame is divided into the upper (70a-d) and lower (70e-h) rows each row being divided into a plurality of areas, and scenes are taken in the same direction along the upper end lower rows. A camera according to any one of the foregoing claims, wherein when the full size original frame (22a) is divided into N original sub-frames (24a-c), two full size original frames (22a,b) are used at one continuous scene taking to take the scenes for two N original sub-frames (24a-h). A camera according to claim 1, wherein the rear end face of a partition wall (25) between adjacent ones of the plurality of exposure chambers (21) is spaced apart from the photographic film so as to expose each border area between adjacent one of the plurality of original sub-frames (24a-h). A camera according to claim 1, wherein said plurality of taking lenses (3a-h, 89,90) are mounted on a single plate (4,5,82,83). A camera according to claim 1, wherein the sub-original frames (24,70) include three or more sub-original frames. A camera according to claim 10, wherein the two end original sub-frames (W1) among the plurality of original sub-frames disposed linearly in a row along the longitudinal direction of the photographic film (20) have the widths wider than the width of at least one inner original sub-frame (W2) of the row, and the two taking lenses (3a,d) for the two end original sub-frames are shifted, from the centers of the end sub-frames toward the centers of the inner sub-frames. A camera according to claim 1, wherein the plurality of exposure chambers (21a-h,85a-h) and the plurality of taking lenses (3a-h,89,90) comprise at least three exposure chambers and at least three taking lenses, respectively. A camera according to claim 1 comprising: two exposure chamber groups respectively including at least four exposure chambers (85a-e,85f-h), wherein the shutter means comprise two shutter disks (80,81) provided in correspondence with the respective exposure chamber groups, wherein the fixed plate has eight stationary shutter openings (84) being linearly formed in correspondence with each of the eight exposure chambers (85a-h), the two moveable shutter opening being formed at positions on the same straight line passing through the centre of the respective shutter disks (80,81) and different in distance from the rotation centre of the respective shutter disks (80,81), and wherein each moveable shutter opening passing before two of the stationary shutter openings (84). A camera according to claim 13, wherein said eight exposure chambers (85 a-h) are disposed linearly in the direction of transporting said photographic film, two full size original frames are disposed behind the eight exposure chambers (85a-h), each of the original size frames (70a-h) has the size obtained when dividing a panorama size original frame into four areas, and the panorama size original frame has a size such that the upper and lower sides of the full size original frame are partially cut away therefrom. A camera according to claim 13, wherein the two exposure chamber groups (85a-h) are arranged in upper (85e-h) and lower (85a-d) row disposition, one full size original frame is disposed behind the two exposure chamber groups (85a-h), each of the original sub-frames has a size obtained when the full size original frame is divided into the upper (70e-h) and lower (70a-d) rows each row being divided into four areas. A camera according to claim 4, 14 or 15, wherein the two shutter disks (10,11,80,81) are rotated by a motor (12,88). A camera according to claim 16, further comprising a means (13,87) for changing the rotation direction of the motor (12,88). A camera according to claim 17, wherein the motor (12,88) rotates at a high speed in a section where either of the moveable shutter openings (15,16) passes the stationary shutter openings (3a-h,84), and rotates at low speed in a section where no moveable shutter openings face on the stationary shutter openings (3a-h,84). A camera according to claim 18, further comprising means (40) for changing the low speed in rotation of the motor (12,88) between a plurality of speed levels. A camera according to claim 1, wherein the at least one shutter disk is two shutter disks (10,11). A camera according to claim 20, wherein the two shutter disks (10,11) are coupled together by teeth formed on the outer peripheries thereof, and one of the two shutter disks (10,11) is driven by the motor (12). A camera according to claim 21, further including means (14,17) for detecting an original position of the shutter disk (10), the detecting means comprising an aperture (17) formed in the shutter disk (10) and a photo sensor (14) for detecting the aperture (17).

Inventors: AOSAKI KOH, KAMEYAMA NOBUYUKI, AOSAKI,KOH, KAMEYAMA, NOBUYUKI
Applicants: FUJI PHOTO FILM CO LTD, FUJI PHOTO FILM CO., LTD.
Application year: 1991
Main classification: G03B19
IPC codes: G03B19