JP2004312565A - High-speed frame-by-frame recording television camera system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-speed frame-by-frame recording television camera system in which three or more instantaneous still pictures each indicating a motion of an object moving at very high speed or a state of a natural phenomenon changing at very high speed moment by moment can be extracted continuously at extremely short time intervals of several μs to ten and several μs. <P>SOLUTION: The high-speed frame-by-frame recording television camera system is provided with: an optical branching system for branching an optical image of the object incident from a lens into a plurality of directions; a plurality of solid-state imaging devices for converting the plurality of branched optical images into electric signals; an electronic shutter control means for enabling the plurality of solid-state imaging devices to perform exposure twice at the exposure intervals of several μs to ten and several μs; a plurality of one-frame memories for individually recording two instantaneous still pictures outputted from each of the plurality of solid-state imaging devices; and a memory output switching device for repeatedly read the instantaneous still picture recorded in the one-frame memory the plurality number of times to form a still picture of an observable time length, and switching the still pictures in the order of imaging and outputting as frame-by-frame recording motion picture. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
The present invention relates to a method for capturing and recording a plurality of instantaneous still images of an object moving at a high speed or a natural phenomenon that changes at a high speed at an extremely short time interval of several μs to several tens of μs. The present invention relates to a high-speed frame shooting television camera system that outputs a frame shooting moving image.
[0002]
2. Description of the Related Art In a television camera using a solid-state image sensor, the position of the object changes when an image of a moving object is picked up because the photoelectric surface of the solid-state image sensor is always in a light receiving state. There is a drawback that an image is blurred due to an afterimage and a clear image cannot be obtained. Therefore, in the solid-state imaging device, only the electric charges accumulated in the photodiode on the photoelectric surface within a certain fixed time in the vertical scanning period are transferred to the vertical register and output as a single instantaneous still image. An electronic shutter function of sweeping away the accumulated electric charge has been added, and now a clear instant still image at a shutter speed of 1 / 100,000 second has been obtained.
However, in a television camera that requires 1/60 second to output one instant still image, no matter how sharp an instant still image is obtained, the movement of an object moving at an extremely high speed or the speed of an In applications where the instantaneous state of a changing natural phenomenon is continuously observed, the time interval between two output instantaneous still images is 1/60 second, which is too long to use. However, since the charge transfer time from the photodiode of the solid-state imaging device to the vertical register is only a few μs, if the charge accumulated in the photodiode after transferring the charge to the vertical register is not swept out, this can be reduced. Although it is possible to output the second instant still image several μs after the first instant still image as a second instant still image and it has already been put into practical use, the third image has to wait for 1/60 second later. A television camera that can continuously capture three or more instantaneous still images at intervals of μs to tens of μs has not been realized.
In view of the above prior art, an instant still image showing the instantaneous state of the movement of an object moving at an ultra-high speed or a natural phenomenon changing at an ultra-high speed is continuously generated at an extremely short time interval of several μs to tens of μs. A high-speed frame shooting camera system capable of taking out three or more images is provided.
[0003]
Means for Solving the Problems The present inventor has solved the above problems by the following means.
(1) In a television camera using a solid-state imaging device, a branching optical system that branches an optical image of a subject incident from a lens in a plurality of directions, and a plurality of branching optical systems that convert each of the plurality of branched optical images into an electric signal. A solid-state imaging device; electronic shutter control means for enabling each of the plurality of solid-state imaging devices to perform two exposures at an exposure interval of several μs to several tens of μs; output from each of the plurality of solid-state imaging devices A plurality of one-frame memories for individually recording two instantaneous still images, and an instantaneous still image having a time length observable by repeatedly reading the instantaneous still images recorded by the one-frame memory a plurality of times, respectively, and A memory output switching device for switching the instantaneous still image of the observable time length in the order of image capturing and outputting it as an observable framed moving image; A high-speed frame shooting television camera comprising a terminal for outputting an exposure period signal from the stage,
An intermittent lighting device such as a strobe that emits light in synchronization with an electronic shutter of the high-speed frame shooting television camera, receiving the exposure possible period signal from the high-speed frame shooting television camera,
A trigger generator for giving a start timing to the high-speed frame shooting television camera.
[0004]
(2) In a television camera using a solid-state imaging device, a spectral prism that branches an optical image of a subject incident from a lens in two to four directions, and converts each of the two to four branched optical images into an electric signal. To four solid-state imaging devices, electronic shutter control means for enabling two to four exposures to each of the two to four solid-state imaging devices at an exposure interval of several μs to several tens of μs, 4 to 8 one-frame memories for individually recording two instantaneous still images output from each of the solid-state imaging devices, and the instantaneous still images recorded by the one-frame memory can be repeatedly read and observed a plurality of times, respectively. A memory output switching device for switching an instant still image having an appropriate time length and switching the instant still image having the observable time length in the order of imaging, and outputting as an observable framed moving image; A high-speed frame shooting television camera comprising a terminal for outputting an exposure-possible period signal from the shutter control means,
An intermittent lighting device such as a strobe that emits light in synchronization with an electronic shutter of the high-speed frame shooting television camera, receiving the exposure possible period signal from the high-speed frame shooting television camera,
A trigger generator for giving a start timing to the high-speed frame shooting television camera.
[0005]
(3) a plurality of high-speed frame shooting television cameras according to (1) or (2), which are arranged toward a subject;
An intermittent lighting device such as a strobe that emits light in synchronization with an electronic shutter of the high-speed frame shooting television camera, receiving an exposure possible period signal from the plurality of high-speed frame shooting TV cameras,
A trigger generator for giving a start timing to the first high-speed frame shooting television camera of the plurality of high-speed frame shooting television cameras,
A trigger controller for receiving a trigger from a trigger generator and sequentially giving a start timing to the high-speed frame shooting television camera driven at the second time or later with a time difference of a constant interval;
A video signal output control for sequentially operating the memory output switching device of each high-speed frame shooting television camera with a time difference of a constant interval and sequentially switching and outputting frame-moving moving images from the plurality of high-speed frame shooting TV cameras. Container
2. The high-speed frame shooting television camera system according to claim 1, comprising:
[0006]
(4) an optical system that can branch an optical image of a subject in a plurality of directions;
A plurality of high-speed frame shooting television cameras according to (1) or (2), each of which captures an optical image branched by the optical system;
An intermittent lighting device such as a strobe that emits light in synchronization with an electronic shutter of the high-speed frame shooting television camera, receiving an exposure possible period signal from the plurality of high-speed frame shooting TV cameras,
A trigger generator for giving a start timing to the first high-speed frame shooting television camera of the plurality of high-speed frame shooting television cameras,
A trigger controller for receiving a trigger from a trigger generator and sequentially giving a start timing to the high-speed frame shooting television camera driven at the second time or later with a time difference of a constant interval;
The memory output switching device of each high-speed frame shooting television camera is sequentially operated with a time difference at a fixed interval, and the frame shooting moving images from the plurality of high-speed frame shooting TV cameras are switched in the order of shooting to continuously shoot frame-moving videos. Video signal output controller to output as image
A high-speed frame shooting television camera system characterized by comprising:
[0007]
(5) The electronic shutter control means sequentially starts the plurality of solid-state imaging devices with a certain time difference, and performs two exposures of each of the solid-state imaging devices continuously at the same interval and the same duration. The high-speed frame shooting television camera system according to any one of the above (1) to (4), which functions as described above.
(6) The memory output switching device may repeatedly read any one of the instantaneous still images recorded by the plurality of one-frame memories and output the instantaneous still image having an observable time length. The high-speed frame shooting television camera system according to any one of (1) to (5) above, wherein
[0008]
(7) The video signal output controller can repeatedly read and observe any one of the instantaneous still images recorded by the plurality of one-frame memories of each of the plurality of high-speed frame shooting television cameras a plurality of times, respectively. The high-speed frame shooting television camera system according to any one of (2) to (5), wherein the high-speed frame shooting television camera system can be output as an instant still image at an appropriate time.
(8) The video signal output controller outputs a framed moving image output from any one of the plurality of high-speed frame shooting television cameras or frames continuously output from a plurality of arbitrarily selectable frames. The high-speed frame shooting television camera system according to any one of the above (2) to (5), wherein it is also possible to output a shot moving image.
[0009]
(9) The high-speed frame shooting according to any one of (1) to (8), further including a recording medium for recording a frame shot moving image output from the high-speed frame shooting television camera system. Frame shooting TV camera system.
[0010]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram of an embodiment of a high-speed frame shooting television camera system of the present invention, and FIG. 2 is an explanatory diagram of an operation of outputting two instantaneous still images from a solid-state image sensor at time intervals of several μs to several tens μs. FIG. 3 is an explanatory view of the operation of a high-speed frame shooting television camera. FIG. 4 is a configuration diagram of an embodiment of a high-speed frame shooting TV camera system using a plurality of high-speed frame shooting TV cameras. 1 is a configuration diagram of an embodiment of a high-speed frame shooting television camera system including an optical system that branches an optical image in front of a high-speed frame shooting TV camera.
In the figure, 1, 1a, 1b, 1c, 1n are high-speed frame shooting television cameras, 2 is a spectral prism, 3a, 3b, 3c is a solid-state image sensor, 4a, 4a ', 4b, 4b', 4c, 4c 'is 1 5 is a mixer, 6 is an ultra-high-speed electronic shutter control means, 7 is a memory output switching device, 8 is a lens, 9 is a video output terminal, 10 is an external trigger input terminal, 11 is a synchronization signal output terminal for light emission, 12 is a trigger controller, 13 is a video signal output controller, 14 is a branch optical system, 15 is a recording / reproducing device, 20 is an intermittent lighting device, and 30 is a trigger generator.
[0011]
(Example 1)
FIG. 1 shows a configuration diagram of an embodiment of a high-speed frame shooting television camera system according to the present invention. The present embodiment receives a high-speed frame shooting television camera 1 described later and a synchronization signal for light emission output from the high-speed frame shooting TV camera 1 and synchronizes with an electronic shutter of the high-speed frame shooting TV camera 1. An intermittent lighting device 20 that emits a plurality of flashes of short duration of several μs to several tens of μs several times at short time intervals of several μs to several tens of μs, and a trigger generator for giving a start timing to the high-speed frame shooting television camera 1 30.
[0012]
As shown in FIG. 1, the high-speed frame shooting television camera 1 according to the present embodiment includes a lens 8 that takes in an optical image from a subject, a spectral prism 2 that branches the optical image of the subject incident from the lens 8 into three directions, The three solid-state imaging devices 3a, 3b, and 3c that convert each of the three branched optical images into electric signals, and the sweep pulse and the sensor gate pulse illustrated in FIG. 2 are applied to the solid-state imaging devices 3a, 3b, and 3c. Either sweeping out of the electric charges accumulated on the photoelectric surfaces of the solid-state imaging devices 3a, 3b, 3c or transfer to the vertical transfer register is selectively controlled to instantaneously stop two at a time interval of several μs to tens of μs. An ultra-high-speed electronic shutter control means 6 for enabling an image to be captured and outputting a synchronizing signal for light emission shown in FIG. 2 to the intermittent lighting device 20 and output from the solid-state imaging devices 3a, 3b, 3c Six one-frame memories 4a, 4a ', 4b, 4b', 4c, and 4c 'for recording two instantaneous still images, respectively, and the six one-frame memories 4a, 4a'4b, 4b', and 4c , 4 c ′, the instant still images recorded in 4 c ′ are repeatedly read out a plurality of times to obtain an instant still image with a time length observable, and the instant still images with the observable time length are switched in the order of imaging, and a frame-capturing moving image that can be observed. And a memory output switching device 7 for outputting as an image.
[0013]
In the high-speed frame shooting television camera 1 of the present embodiment, the optical image of the subject incident from the lens 8 is branched by the spectral prism 2 in three directions with an equal amount of light, and the three solid-state imaging devices 3a, 3b, and 3c. Are formed on the respective photocathodes.
As described in the related art section, the photocathode of the solid-state imaging device is always in a light receiving state, and when an image of a subject that changes rapidly is captured, the output image is blurred by an afterimage. Therefore, the television camera using the solid-state imaging device is provided with an electronic shutter function for obtaining a clear image, so the high-speed frame shooting television camera of the present embodiment utilizes this electronic shutter function to A means is used that enables two instantaneous still images, which are normally captured at a rate of one per 1/60 second, to be captured at 1/60 second.
The means for capturing two instantaneous still images in 1/60 second will be described with reference to FIG. As shown in FIG. 2, a charge sweeping pulse is always applied to the solid-state imaging devices 3a, 3b, and 3c to sweep out the charge accumulated in the photodiode on the photocathode. An external trigger is input from the trigger generator 30 to the high-speed frame shooting television camera 1 to stop the application of the charge sweeping pulse to the solid-state imaging devices 3a, 3b, and 3c, and the first exposure (1) ( (Accumulation of electric charge) is performed for an arbitrary period of time from several μs to several tens of μ. Thereafter, a sensor gate pulse signal is applied to the solid-state imaging devices 3a, 3b, and 3c to transfer the accumulated electric charge from the photodiode on the photoelectric surface to the vertical transfer register. After the transfer, the second exposure (2) is started. However, in this case, since the exposure time is as short as several μs to several tens of μs, it is indispensable to illuminate the subject with the flash of the intermittent illumination device 20 which lasts several μs to several tens of μs.
Since the transfer of the charge accumulated in the photodiode to the vertical transfer register by the exposure (1) can be performed in a few μs, the second exposure (2) can be started in a few μs after the end of the first exposure (1). . However, it takes 1/60 second for the charge transferred to the vertical transfer register to be output as a video signal from the image sensor. During that time, the charge stored in the photodiode cannot be transferred to the vertical transfer register, and the second transfer is not possible. Exposure (2) must be continued for 1/60 second. Therefore, in order to obtain a sharp instantaneous still image of the subject illuminated by the flash of several μs to several tens of μs, which is the same as that of the first exposure (1), in the second exposure (2), the exposure period of FIG. It is necessary to devise a portion shown by a dotted line so that the exposure amount for approximately 1/60 second is extremely smaller than the exposure amount during flash illumination.
As shown in FIG. 2, the flash light of the intermittent lighting device 20 must be emitted in synchronization with the first and second exposure periods (1) and (2) of the high-speed frame shooting television camera 1, Therefore, a synchronization signal for light emission is transmitted from the high-speed frame shooting television camera 1 to the intermittent lighting device 20.
As described above, the instant still image captured by the first exposure (1) is output for 1/60 second after the image capturing, and the instant still image captured by the second exposure (2) is also 1/60 second thereafter. Since the output is performed in seconds, the video signal output from the solid-state imaging device is as shown in FIG.
FIG. 2 is a conceptual diagram for explaining the operation of the high-speed frame shooting television camera according to the present embodiment. The time axis (horizontal axis) of the exposure time and the exposure time interval is displayed larger than the time axis of the other parts. I have.
[0014]
In this embodiment, as shown in FIG. 1, the three solid-state imaging devices 3a, 3b, and 3c controlled to output the two instantaneous still images in the above 1/60 second are divided into three-branch spectral prisms. 2, the exposure periods of the solid-state imaging devices 3a, 3b, and 3c are sequentially shifted by the operation of the ultra-high-speed electronic shutter control means 6 shown in FIG. It was designed so that it could be taken out continuously.
As shown in FIG. 3, the interval between the exposure start times of the solid-state imaging devices 3a, 3b, and 3c is twice the sum of the exposure period (1) and the transfer time of the accumulated charges to the vertical transfer register. It is extremely shorter than 1/30 seconds required to take out two instantaneous still images from the solid-state imaging device, and the instantaneous still images output from the solid-state imaging devices 3a, 3b, and 3c cannot be directly mixed. Further, the duration of one instant still image output from the solid-state imaging device is 1/60 second and cannot be observed by human eyes as it is.
Therefore, as shown in FIG. 1, the instantaneous still images output from the solid-state imaging devices 3a, 3b, and 3c are one-frame memories 4a, 4a ', 4b, 4b', 4c, and 4c each of which can record one frame for each image. , And the one frame memory is repeatedly read out a plurality of times by the memory output switching device 7 to form an instantaneous still image having an observable time length, and read out as the observable time length. Are sequentially switched and output from the video output terminal 9 as six consecutive framed moving images. In addition, only the instantaneous still image of any one of the one frame memories 4a, 4a ', 4b, 4b', 4c, 4c 'is continuously and repeatedly read out by the operation of the memory switching output device 7. It is also preferable to make observation possible.
In the above description, the high-speed frame shooting television camera that branches the optical image of the subject into three has been described as an embodiment. However, if a branch optical system that can branch the optical image of the subject into two or more branches is used, an instantaneous still image that can be observed A high-speed frame shooting television camera in which three or more images can be continuously obtained can also be realized.
[0015]
As described above, the high-speed frame shooting television camera 1 is capable of splitting an optical image of a subject into a plurality of parts, and having a very short exposure period (1). No image is obtained. Therefore, it is indispensable to use the intermittent lighting device 20 that emits a flash in synchronization with the shutter of the high-speed frame shooting television camera 1. For this reason, the high-speed frame shooting television camera 1 is provided with a light emission synchronization signal output terminal 11 for outputting a light emission synchronization signal for controlling the light emission timing to the intermittent lighting device 20.
[0016]
Further, in the present high-speed frame shooting camera system, since recording in one frame memory is limited to one frame of an instantaneous image, it is an essential condition to repeatedly read out recording in one frame memory for observation of a recorded image. . Therefore, it is also preferable to make the memory detachable in order to enhance the use efficiency of the high-speed frame shooting television camera 1, and to obtain a video output by providing a separate memory reading device.
Further, it is preferable to provide a recording / reproducing device for repeatedly reproducing the framed moving image continuously output from the high speed framed television camera system.
[0017]
(Example 2)
In this embodiment, as shown in FIG. 4, a plurality of high-speed frame shooting television cameras 1a to 1n according to the first embodiment, which are arranged close to a subject, and the trigger generator 30 and A trigger controller 12 for applying a trigger from the trigger generator 30 to the ultra-high-speed electronic shutter control means 6 of each of the high-speed frame photographing television cameras 1a to 1n sequentially with a time difference of a fixed interval; A video signal output controller 13 for sequentially switching the output timing of each video signal of each of the video cameras 1a to 1n with a time interval of a fixed interval; and each of the ultra-high-speed electronic devices of the plurality of high-speed frame shooting television cameras 1a to 1n. Receiving the light-emission synchronization signal from the shutter control means 6, the flash for several μs to several tens of μs at intervals of several μs to several tens of μs in synchronization with the shutters of the high-speed frame shooting television cameras 1a to 1n. Is composed of an intermittent illumination apparatus 20 that emits.
[0018]
In this embodiment, a plurality of high-speed frame shooting television cameras 1a to 1n shown in FIG. 1 are arranged close to a subject, and at intervals of several μs to several tens μs emitted by the intermittent lighting device 20. An external trigger from the trigger generator 30 is activated by a trigger controller so that any one of the plurality of high-speed frame shooting television cameras 1a to 1n operates sequentially every six flashes lasting several μs to several tens of μs. 12 and sequentially switches the instant still images captured by the solid-state imaging devices 3a, 3b, and 3c of each of the high-speed frame shooting TV cameras 1a to 1n in addition to any one of the high-speed frame shooting TV cameras 1a to 1n. In one frame memory 4a, 4a ', 4b, 4b', 4c, 4c '.
The instant still images recorded in the one-frame memories 4a, 4a ', 4b, 4b', 4c, 4c 'of each of the high-speed frame shooting television cameras 1a to 1n correspond to memory output switching as described in the first embodiment. The device 7 repeatedly reads a plurality of times into six instantaneous still images of a time length that can be observed, and the six instantaneous still images are sequentially switched in the image capturing order, and are output from the video output terminal 9 as continuous framed moving images. Is output. Therefore, in the present embodiment, the frame-captured moving images from the respective video output terminals 9 of the high-speed frame-capturing television cameras 1a to 1n are switched by the video signal output controller 13 in the order of application of the trigger at the time of image capturing. It is possible to output as a continuous framed moving image of a plurality of (6 × n) frames of the instant still images of the observable time length.
[0019]
In the high-speed frame shooting camera system according to the present embodiment, the recording in the one-frame memories 4a, 4a ', 4b, 4b', 4c, and 4c 'is limited to one frame of the instantaneous still image. Only a 1/60 second instant still image can be obtained. Therefore, in order to observe an image recorded in the one-frame memories 4a, 4a ', 4b, 4b', 4c, and 4c ', the images recorded in the one-frame memories 4a, 4a', 4b, 4b ', 4c, and 4c' are read. It is necessary to repeatedly read out the instantaneous still images and output them as instantaneous still images of a time length that can be observed, and all the instantaneous still images captured by the high-speed frame shooting television cameras 1a to 1n are frame continuous moving images. It takes some time to get. Therefore, in order to increase the use efficiency of the high-speed frame shooting television camera system of the present embodiment, the one-frame memories 4a, 4a ', 4b, 4b', 4c, 4c 'are detachable, and a memory reproducing device provided separately is provided. An output video signal control device may be used to obtain the framed moving image, or a recording / reproducing device 15 may be provided for recording and reproducing framed moving images continuously output from the high-speed frame shooting television cameras 1a to 1n. Is preferred.
[0020]
(Example 3)
In FIG. 5, a branch optical system 14 capable of branching an optical image of a subject in three directions is disposed in front of the three high-speed frame shooting television cameras 1a, 1b, and 1c shown in FIG. The shutter control means 6 of the television cameras 1a, 1b, 1c are sequentially driven with a time difference of a constant interval, and the output of the memory output switching device 7 (see FIG. 1) of each of the high-speed frame shooting television cameras 1a, 1b, 1c. The timing is also sequentially given a time difference at a constant interval, so that the movement of an object moving at a high speed illuminated by the flash emitted from the intermittent illumination device 20 synchronized with the electronic shutter or the instantaneous instantaneous change such as a natural phenomenon changing at a high speed. The embodiment of the high-speed frame shooting television camera system which continuously outputs a plurality of instantaneous still images in a state at an extremely short time interval of several μs to tens of μs has been described.
The present embodiment is similar to the operation of the second embodiment except that a branch optical system 14 that can branch an optical image of a subject in three directions is disposed in front of three high-speed frame shooting television cameras 1a, 1b, and 1c. Although the same, the optical image at the moment in the same plane frame is branched by the branch optical system 14 and can be taken into the three high-speed frame shooting television cameras 1a, 1b, and 1c, so that it is suitable for measurement. However, compared to the second embodiment, the number of the high-speed frame shooting television cameras 1 is two or three because the amount of the optical image of the subject incident on the three high-speed frame shooting television cameras 1 is reduced due to branching. There is a tendency to be limited to a degree.
[0021]
According to the high-speed frame shooting television camera system of the present invention, the following effects can be exhibited.
1. According to the invention of claim 1 or 2,
Conventionally, four or more instantaneous still images at a very short interval of several μs to several tens of μs can be captured by one TV camera, and only four or more captured images can be captured. Instant still images can be output as a continuous framed moving image of an instant still image with a length of time that can be observed, and instantaneous instantaneous conditions such as movement of objects moving at high speed and natural phenomena changing at high speed and within extremely short time Changes can be observed.
[0022]
2. According to the invention of claim 3,
Instantaneous instantaneous states such as movement of an object moving at a high speed, natural phenomena changing at a high speed, and changes within an extremely short time can be captured with more instantaneous still images than the invention of claim 1 or 2. For this purpose, a plurality of high-speed frame shooting television cameras can be photographed to capture a plurality of instantaneous still images of a subject which is out of the imaging frame of the camera in a very short time.
[0023]
3. According to the invention of claim 4,
A high-speed frame shooting TV camera system suitable for measurement is constructed because the optical image of the subject can be branched in multiple directions and the optical image at the moment within the same plane frame can be captured on the same optical axis. it can.
[0024]
4. According to the invention of claim 5,
The electronic shutter control means functions so that the plurality of solid-state imaging devices are sequentially started with a certain time difference, and two exposures are performed continuously at the same interval and the same duration. Therefore, since the plurality of instantaneous still images can be captured at the same interval and at the same continuous time, changes in a short time such as movement of an object moving at a high speed and natural phenomena changing at a high speed can be obtained. Observe more accurately.
[0025]
5. According to the invention of claim 6,
The memory output switching device can repeatedly read out any one of the instantaneous still images recorded by the plurality of one-frame memories and output it as an instantaneous still image having a time length that can be observed. It is also possible to observe only one instantaneous still image.
[0026]
6. According to the invention of claim 7,
The high-speed frame shooting television camera system according to claim 2 or 3, wherein any one of the plurality of instantaneous still images captured by the plurality of high-speed frame shooting TV cameras is repeated a plurality of times. Since it can be read out and output as an instantaneous still image at a time during which observation is possible, it becomes possible to observe only one target instantaneous still image.
[0027]
7. According to the invention of claim 8,
The high-speed frame shooting television camera system according to claim 2 or 3, wherein a frame shooting moving image output from any one of the plurality of high-speed frame shooting TV cameras or a plurality of arbitrarily selectable frames is selected. Since a framed moving image that is continuously output can also be output, it is possible to continuously observe a change within a desired arbitrary time.
[0028]
8. According to the invention of claim 9,
The high-speed frame-capturing television camera captures and outputs the frame-captured moving image, which can be repeatedly observed without using the high-speed frame-capturing TV camera again. Can be increased.
[0029]
9. In the high-speed frame shooting television camera system of the present invention, there is no post-processing such as development processing required for instantaneous still image shooting by an ultra-high-speed film camera, so that the time from imaging to observation can be significantly reduced, and the film cost can be reduced. And consumables necessary for development processing are not required, so long-term continuous imaging is not possible, but changes within a very short time, such as movement of objects moving at high speed or natural phenomena changing at high speed, can be efficiently performed. Observe and analyze economically and economically.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an embodiment of a high-speed frame shooting television camera system of the present invention.
FIG. 2 is an explanatory diagram of an operation of outputting two instantaneous still images at a time interval of several μs to several tens μs from a solid-state imaging device.
FIG. 3 is an operation explanatory view of a high-speed frame shooting television camera.
FIG. 4 is a configuration diagram of an embodiment of a high-speed frame shooting television camera system using a plurality of high-speed frame shooting TV cameras.
FIG. 5 is a configuration diagram of an embodiment of a high-speed frame shooting television camera system including an optical system that branches an optical image in front of a plurality of high-speed frame shooting TV cameras.
[Explanation of symbols]
1, 1a, 1b, 1c, 1n: High-speed frame shooting TV camera
2: spectral prism 3a, 3b, 3c: solid-state imaging device
4a, 4a ', 4b, 4b', 4c, 4c ': 1 frame memory
5: Mixer 6: Ultra high-speed electronic shutter control means
7: Memory output switching device 8: Lens
9: Video output terminal 10: External trigger input terminal
11: Sync signal output terminal for light emission 12: Trigger controller
13: Video signal output controller 14: Branch optical system
15: Recording / reproducing device 20: Intermittent lighting device
30: Trigger generator

Claims (9)

In a television camera using a solid-state imaging device, a branching optical system that branches an optical image of a subject incident from a lens in a plurality of directions, and a plurality of solid-state imaging devices that convert each of the plurality of branched optical images into an electric signal. Electronic shutter control means for enabling each of the plurality of solid-state imaging devices to perform two exposures at an exposure interval of several μs to several tens of μs; and two images output from each of the plurality of solid-state imaging devices. A plurality of one-frame memories for individually recording the instantaneous still images, and an instantaneous still image having a time length observable by repeatedly reading the instantaneous still images recorded by the one-frame memory a plurality of times, respectively. A memory output switching device that switches instantaneous still images having a long time length in the order of imaging, and outputs them as observable framed moving images, and the electronic shutter control unit. A high-speed frame shooting television camera having a terminal for outputting a synchronization signal for light emission of
An intermittent lighting device such as a strobe that emits light in synchronization with an electronic shutter of the high-speed frame shooting television camera, receiving the light emission synchronization signal from the high-speed frame shooting television camera,
A trigger generator for giving a start timing to the high-speed frame shooting television camera. In a television camera using a solid-state imaging device, a spectral prism that branches an optical image of a subject incident from a lens in two to four directions, and two to four optical images that convert each of the two to four branched optical images into an electric signal A solid-state imaging device, electronic shutter control means for enabling two to four exposures to each of the two to four solid-state imaging devices at an exposure interval of several μs to several tens of μs, and the two to four solid-state imaging devices Four to eight one-frame memories for individually recording two instantaneous still images output from the respective elements, and a time length during which the instantaneous still images recorded by the one-frame memory can be repeatedly read and observed a plurality of times, respectively. A memory output switching device for switching an instant still image having an observable time length as an instant still image, and for outputting an observable framed moving image, and the electronic shutter. A high-speed frame shooting television camera comprising a terminal for outputting a synchronization signal for light emission from the control means,
An intermittent lighting device such as a strobe that emits light in synchronization with an electronic shutter of the high-speed frame shooting television camera, receiving the light emission synchronization signal from the high-speed frame shooting television camera,
A trigger generator for giving a start timing to the high-speed frame shooting television camera. A plurality of high-speed frame shooting television cameras according to claim 1 or 2 arranged toward a subject,
An intermittent lighting device such as a strobe that emits light in synchronization with an electronic shutter of the high-speed frame shooting television camera, receiving a synchronization signal for light emission from the plurality of high-speed frame shooting TV cameras,
A trigger generator for giving a start timing to the first high-speed frame shooting television camera of the plurality of high-speed frame shooting television cameras,
A trigger controller that receives a trigger from the trigger generator and gives a start timing to the high-speed frame shooting television camera that is driven second and thereafter with a time difference of a fixed interval in sequence.
A video signal output control for sequentially operating the memory output switching device of each high-speed frame shooting television camera with a time difference of a constant interval and sequentially switching and outputting frame-moving moving images from the plurality of high-speed frame shooting TV cameras. 2. The high-speed frame shooting television camera system according to claim 1, wherein the television camera system comprises: An optical system that can branch the optical image of the subject in multiple directions,
A plurality of high-speed frame shooting television cameras according to claim 1 or 2, which captures each of the optical images branched by the optical system,
An intermittent lighting device such as a strobe that emits light in synchronization with an electronic shutter of the high-speed frame shooting television camera, receiving a synchronization signal for light emission from the plurality of high-speed frame shooting TV cameras,
A trigger generator for giving a start timing to the first high-speed frame shooting television camera of the plurality of high-speed frame shooting television cameras,
A trigger controller that receives a trigger from the trigger generator and gives a start timing to the high-speed frame shooting television camera that is driven second and thereafter with a time difference of a fixed interval in sequence.
The memory output switching device of each high-speed frame shooting television camera is sequentially operated with a time difference at a fixed interval, and the frame shooting moving images from the plurality of high-speed frame shooting TV cameras are switched in the order of shooting to continuously shoot frame-moving videos. A high-speed frame shooting television camera system, comprising: a video signal output controller for outputting as an image. The electronic shutter control means functions so that the plurality of solid-state imaging devices are sequentially started with a certain time difference, and that two exposures are continuously performed at the same interval and the same duration. The high-speed frame shooting television camera system according to any one of claims 1 to 4, wherein: The memory output switching device can repeatedly read out any one of the instantaneous still images recorded by the plurality of one-frame memories and output it as an instantaneous still image having an observable time length. The high-speed frame shooting television camera system according to any one of claims 1 to 5, characterized in that: The video signal output controller reads out any one of the instantaneous still images recorded by the plurality of one-frame memories of each of the plurality of high-speed frame shooting television cameras a plurality of times, respectively, and determines the time during which observation is possible. The high-speed frame shooting television camera system according to any one of claims 2 to 5, wherein the system can be output as an instant still image. The video signal output controller outputs a frame shooting moving image output from any one of the plurality of high-speed frame shooting television cameras or a frame shooting moving image continuously output from a plurality of arbitrarily selectable cameras. The high-speed frame shooting television camera system according to any one of claims 2 to 5, wherein the high-speed frame shooting television camera system according to any one of claims 2 to 5, further comprising: The high-speed frame shooting television camera system according to any one of claims 1 to 8, further comprising a recording medium for recording a frame shooting moving image output from the high-speed frame shooting television camera system.

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