JPH0439853B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an endoscope imaging device that can use both a frame-sequential color imaging means and a color mosaic imaging means.

[Prior art and problems to be solved by the invention] In recent years, by inserting an elongated insertion part into a body cavity, internal organs, etc. in the body cavity can be observed, and when necessary, treatment tools have been inserted into the channel of the treatment instrument. Endoscopes (also called scopes or fiberscopes), which can perform various therapeutic procedures using instruments, are widely used.

Furthermore, various electronic scopes using solid-state imaging devices such as charge-coupled devices (CCDs) as imaging means have been proposed. This electronic scope has advantages such as higher resolution than fiberscopes, easier recording and reproduction of images, and easier image processing such as enlargement of images and comparison of two images.

The color image capturing method of the electronic scope includes a method of sequentially switching illumination light to R (red), G (green), B (blue), etc., as shown in Japanese Patent Laid-Open No. 61-82731, for example. Sequential type and, for example, JP-A-60-
As shown in Japanese Patent No. 76888, a color mosaic type (also called simultaneous type) is provided in which a filter array in which color filters that transmit color light such as R, G, and B are arranged in a mosaic pattern is provided in front of a solid-state image sensor. )
There is. The frame sequential method has the advantage that the number of pixels can be reduced compared to the color mosaic method, while the color mosaic method has the advantage of not causing color shift.

Further, the electronic scopes are diversified depending on the purpose of use. For example, for upper or lower digestive organs, the outer diameter of the insertion portion is approximately 10 mm. On the other hand, for example, for use in the bronchus, an outer diameter of around 5φmm or less is usually required. As described above, it is physically and performance-wise impossible to use the same type of image pickup element and the same type of image pickup method for various electronic scopes whose insertion portions have a wide range of outer diameters. That is, for example, in order to realize a bronchial (small diameter) electronic scope, it is necessary to use an image sensor with a small number of pixels.

When the number of pixels is small, R,
It is advantageous to use a frame-sequential color imaging method in which the image is illuminated in a frame-sequential manner with light of each of the G and B wavelengths, images are captured in the frame-sequential manner under the illumination, and the images are combined and displayed in color.

On the other hand, for those with an outer diameter of around 10 mm, it is advantageous to increase the number of pixels and use a color mosaic imaging method to improve image quality.

Incidentally, the electronic scope is generally connected to a light source device that supplies illumination light suitable for each scope, and in the case of an electronic scope, is further connected to a video processor that processes video signals.

The illumination method and signal processing are different between the frame sequential method and the color mosaic method. However, conventional light source devices and video processors have been compatible with either the frame sequential type or the color mosaic type. Therefore, the user has to prepare different light source devices and video processors and perform different operations depending on the type of scope, which is not economical or efficient.

In addition, Japanese Patent Application Laid-open No. 60-243625 discloses that a fiberscope equipped with an optical fiber bundle for image transmission is connected to a control device of a field-sequential type electronic scope and observed on a display screen such as a monitor television. A connection system is disclosed. However, with this system, it is not possible to use a color mosaic type electronic scope or to perform naked eye observation using a fiberscope.

[Object of the Invention] The present invention has been made in view of the above circumstances, and provides an endoscope that can use both a frame-sequential type imaging means and a color mosaic type imaging means, and can improve operability. The purpose is to provide an imaging device for

[Means and effects for solving the problems] The present invention provides a scope equipped with a field-sequential type color imaging means, a scope equipped with a color mosaic type color imaging means, and an illumination light compatible with both scopes. illumination means for supplying a signal, signal processing means for performing signal processing for both scopes, illumination connection means for connecting both scopes to the illumination means, and connection means for connecting both scopes to the signal processing means. In addition, the illumination connection means is made common to both scopes, so that scopes with different imaging systems can be connected to the illumination means through the common connection means.

In the present invention, a scope equipped with a frame-sequential color imaging means or a scope equipped with a color mosaic color imaging means refers to an electronic scope in which an imaging means is integrally incorporated, and a scope connected to the scope. This includes one in which an imaging means is detachably attached to the eye.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 8 relate to a first embodiment of the present invention, in which FIG. 1 is a perspective view showing the entire system of an endoscope device, FIG. 2 is a block diagram showing the configuration of the imaging device main body, and FIG. The figure is an explanatory diagram showing the configuration of a fiberscope with a field-sequential type external camera, Figure 4 is an explanatory diagram showing the configuration of a color mosaic type fiberscope with an external camera, and Figure 5 is an explanatory diagram showing the configuration of the fiberscope. , FIG. 6 is a block diagram showing the configuration of a field sequential process circuit, FIG. 7 is a block diagram showing the configuration of a mosaic process circuit, and FIG. 8 is an explanatory diagram showing another state of the rotary filter section.

As shown in FIG. 1, an endoscope device 1 houses a light source device and a video processor that processes video signals, and includes various scopes (endoscopes) 2A, 2B,
It includes an imaging device main body 1a to which any of 2C, 2D, and 2E can be connected. There are five types of scopes as shown in the figure: a field sequential electronic scope 2A, a color mosaic electronic scope 2 that uses a color mosaic filter.
B. Fiberscope with externally attached field-sequential television camera (hereinafter referred to as fiberscope with field-sequential television camera) 2C, fiberscope with externally attached color mosaic television camera (hereinafter referred to as fiberscope with color mosaic television camera) There are 2D and 2E fiberscopes.

Each scope 2A, 2B, 2C, 2D, 2E
Each has an elongated insertion section 3 and an operation section 4 connected to the rear end side of the insertion section 3. A universal cord 5 is extended from the operation section 4, and a universal cord 5 is connected to the tip of the universal cord 5. , light source connector 5
A, 5B, 5C, 5D, and 5E are provided.
In addition, in the field sequential type electronic scope 2A and the color mosaic type electronic scope 2B, light source connectors 5A and 5B are provided on the tip side of the universal cord 5.
In addition, signal connectors 6A and 6B are integrally provided. In addition, the fiberscope 2C with a field-sequential television camera and the fiberscope 2D with a color mosaic television camera include a field-sequential television camera 8C in the eyepiece 7 of the fiberscope 2E.
It has a configuration in which a color mosaic type television camera 8D is installed, and signal connectors 6C and 6D are provided at the ends of signal cables 6 extending from the respective television cameras 8C and 8D.

In this embodiment, each scope 2A, 2B, 2
The light source connectors 5A, 5B, 5C, 5D, and 5E of C, 2D, and 2E (hereinafter referred to as 2 when common to all these scopes) are designed so that they can be connected to a common connector receiver. , have the same shape.

Connectors 5A, 6A of each scope 2; 5
B, 6B; 5C, 6C; 5D; 6D; A light source connector receiver 11, a field-sequential signal connector receiver 12a, and a color mosaic signal connector receiver 12b are provided adjacent to the light source connector receiver 11, for example, on both left and right sides. The light source connector receiver 11 includes light source connectors 5A, 5B, 5C, 5D, and
It has a shape that allows connection to any of the 5Es.

In addition, the plane sequential signal connector receiver 12a
are a field-sequential electronic scope 2A and a field-sequential fiberscope with a television camera 2C (these two scopes 2A and 2C are also referred to as a field-sequential scope).
Each signal connector 6A, 6C of the same shape
It is shaped so that it can be connected.

On the other hand, the color mosaic type signal connector receiver 12b is connected to the color mosaic type electronic scope 2B.
and a fiberscope 2D with a color mosaic television camera (the two scopes 2B and 2D are also referred to as mosaic scopes).

When the fiberscope 2E is connected and used, observation is performed with the naked eye, but other scopes 2
When using A, 2B, 2C, and 2D, the captured image can be displayed in color by a color monitor 13 connected to the signal output terminal of the imaging device main body 1a.

In addition, the light source connector 5 in each scope 2
In this embodiment, connectors A, 5B, 5C, 5D, and 5E are provided with air/water supply connectors as well as light guide connectors, and the light source connector receiver 11 is also structured to connect these.

Each scope 2A, 2B, 2C, 2D, 2E
The inside is configured as shown in FIGS. 2 to 5.

A light guide 14 that transmits illumination light is inserted through each scope 2, and the imaging device main body 1a
The illumination light supplied from the light source device 15 to the input end face is transmitted to the output end face, and passes through a light distribution lens 16 disposed in front of the output end face to illuminate the subject side in front.

Further, in each of the scopes 2, an objective lens 17 for imaging is disposed at the distal end of the insertion section 3. In both the field-sequential type or color mosaic type electronic scope 2A or 2B, a solid-state image sensor 18 such as a CCD is disposed at the imaging position of the objective lens 17. The television camera-equipped fiberscope 2C or 2D equipped with the 8D is arranged so that the incident end surface of the image guide 19 faces.

Further, an eyepiece lens 21 is disposed opposite the output end surface of the image guide 19. The fiberscope 2E is designed to allow observation with the naked eye by bringing the eye close to the eyepiece 7.

On the other hand, in the fiberscope 2E with a frame-sequential TV camera 8C or a color mosaic TV camera 8D attached to the eyepiece 7, the fiberscope 2E faces the eyepiece 21 (via an imaging lens not shown). A solid-state image sensor 22 is provided in each.

Solid-state imaging device 18 or 2 constituting the imaging means
2 photoelectrically converts the optical image formed on the imaging surface,
After being amplified by the preamplifier 24, it is connected to the signal connectors 6 (6A, 6B, 6C, 6) via the signal transmission line.
Represents D. ) side and this connector 6 is connected to the signal connector receiver 12a or 12.
b, the video processor 25a or 25b
It is now entered into . Further, each solid-state image sensor 18 or 22 has a driver 26a or 2 of the video processor 25a or 25b.
A clock for driving the solid-state image sensor is applied from 6b.

In addition, scopes other than the fiberscope 2E are provided with type signal generation circuits 27A, 27B, 27C, and 27D that output type signals for scope identification. It is designed to be identified by circuit 28a or 28b.

By the way, as shown in FIG. 2, the interior of the imaging device body 1a to which any of the scopes 2 can be connected includes a light source device 15 and two sets of video processors 2.
5a and 25b are housed.

In this embodiment, the light source device 15 is designed so that the light source can be shared between the field sequential type and white light.

That is, the light source device 15 includes a light source lamp 31 that emits white light, and three lamps of red (R), green (G), and blue (B) arranged in front of this light source lamp 31.
It includes a rotary filter 33a having a primary color transmission filter and rotationally driven by a motor 32a, and a condensing lens 34 disposed in front of the rotary filter 33a. A rotational position sensor 51a for detecting the rotational position is provided at one location on the outer periphery of the rotary filter 33a.

Further, as shown in FIGS. 2 and 8, a rotary filter section 133 consisting of the rotary filter 33a, a motor 32a, a rotational position sensor 51a, etc.
is movable along the rails 134, 134. The rotary filter section 133 is usually set at one end of the rails 134, 134. For example, as shown in FIG.
When the rotary filter 33a is retracted from the optical path of the condenser lens 1 and the condenser lens 34, a white light source section is formed. In this state, the white light emitted from the light source lamp 31 is
The light is focused at 4 and is made to enter the incident end face of a light guide 14 mounted on the connector receiver 11. On the other hand, from this state, the rotary filter section 1
33 is moved along the rails 134, 134 to the lower side of the figure, as shown in FIG. It is starting to form. In this state, the white light emitted from the light source lamp 31 passes through the rotating filter 3.
3a, the illumination light is sequentially turned into R, G, and B wavelength illumination light, and then condensed by a condenser lens 34, and then incident on the incident end surface of the light guide 14 attached to the connector receiver 11. ing.

Further, the movement of the rotary filter section 133 is controlled by a movement control circuit 135. This movement control circuit 135 includes the identification circuit 2
It is designed to be activated by the identification signal 8a. That is, the type signal generation circuit 27
When the type signal from A or 27C identifies that it is a field-sequential type scope, a movement control command is output from the identification circuit 28a to the movement control circuit 135, and the rotary filter section 133 operates as shown in FIG. from the state shown in FIG. 2 to the state shown in FIG.
On the other hand, when the mosaic scope 2B or 2D connector is connected, the rotary filter section 13
3 is in the state shown in FIG. 8, and white light is supplied. Furthermore, even when the fiberscope 2E is attached, white light is supplied to the light guide 14 of the fiberscope 2E.

Note that when the field sequential scope 2A or 2C is attached and then removed, the rotary filter section 133
It is designed to be returned to the state where it is evacuated from the optical path of the light source 31 shown in FIG.

By the way, one of the video processors 25a is
The signal, which is for frame-sequential signal processing and is input to the signal input terminal of the frame-sequential signal connector receiver 12a, is input to the frame-sequential process circuit 41a, and is processed at each wavelength of R, G, and B. The signals captured under the respective illumination lights are output as color signals R, G, and B. These color signals R,
G and B are output as three primary color signals RGB from the three primary color output terminal 43a through drivers formed by buffers 42a, respectively. Further, the color signal R,
G and B pass through a matrix circuit 44a, and a luminance signal Y and color difference signals R-Y and B-Y are generated.
After that, it is input to the NTSC encoder 45a.
Converts to NTSC composite video signal, NTSC
It is output from the output end 46a.

The timing of the clock of the timing generator 52a is synchronized with the rotation of the rotary filter 33a by the output of a rotational position sensor 51a provided at one location on the outer circumference of the rotary filter 33a, and the output of the timing generator 52a is synchronized with the rotation of the rotary filter 33a. The timing of the sequential process circuit 41a is controlled.

The frame-sequential process circuit 41a is configured as shown in FIG. 6, for example.

That is, the signal inputted via the preamplifier is inputted to the sample and hold circuit 54, sampled and held, and then subjected to γ correction in the γ correction circuit 55, and converted into a digital signal by the A/D converter 56. A multiplexer 57 is switched by the signal from the timing generator 52a.
The signals imaged under sequential R, G, and B field illumination are written into the R frame memory 58R, the G frame memory 58G, and the B frame memory 58B. Each of these frame memories 58R, 58G,
The signal data written in 58B are simultaneously read out, converted into analog color signals R, G, and B by the D/A converter 59, and output to the above-mentioned matrix circuit 44a.

On the other hand, color mosaic signal connector 12b
The signals imaged by the solid-state image sensor 18 or 22 are input to the color mosaic process circuit 41b, and are converted into a luminance signal Y, color difference signals R-Y, B-Y.
is output. This signal is then input to the NTSC encoder 45b, converted to an NTSC composite video signal, and output from the NTSC output terminal 46b. The signals are also input to the inverse matrix circuit 44b, converted into color signals R, G, and B, passed through buffers 42b forming a driver, and output as three primary color signals RGB from the three primary color signal output terminal 43b.

Note that the color mosaic process circuit 41b
is configured, for example, as shown in FIG.

That is, the signal from the solid-state image sensor 18 or 22 amplified by the preamplifier 24 passes through the brightness signal processing circuit 61 to generate the brightness signal Y. The color difference signal R is also input to the color signal reproduction circuit 62 and
-Y and B-Y are generated in time series for each horizontal line, white balance compensated by the white balance circuit 63, one is sent directly to the analog switch 64, and the other is sent to the 1H delay line 63a.
The signal is delayed by a horizontal line and input to the analog switch 64a, and color difference signals R-Y and B-Y are obtained by the switching signal of the timing generator 52b.

In addition, each timing generator 52a, 52b
are drivers 26a, 26b and NTSC, respectively.
Signals are applied to the encoders 45a and 45b to control the solid-state imaging device 18 or 22 so that signal processing is performed in synchronization with the drive pulse used to read out the signal. In this case, the frame sequential video processor 2
5a, the timing generator 5
2a is synchronized with the rotating color filter 33 by the output of the position sensor 51a. Furthermore, the above
The NTSC encoders 45a and 45b are constructed with built-in buffers.

By the way, the type signal generation circuits 27A, 27
B, 27C, and 27D are formed by, for example, connecting resistors with different resistance values between two terminals, while the identification circuits 28a and 28b use a comparator or the like to determine the resistance value between the two terminals. The resistance value of the scope allows you to identify what is connected.

For example, a connector receiver 1 for a surface sequential signal.
When the signal connector 6B or 6D of the color mosaic type electronic scope 2B or the color mosaic type fiberscope with television camera 8D is connected to 2a, the identification circuit 28a identifies that the resistance value is not that of the field sequential type. Depending on the identified signal, the warning circuit 66a outputs a warning sound.
Users are notified by flashing LEDs, etc.

In addition, color mosaic signal connector receiver 1
2b as well, when the connector 6A of the field-sequential electronic scope 2A or the connector 6C of the field-sequential television camera-equipped fiberscope 2C is connected, the identification circuit 28b identifies the connector 6A and the warning circuit 66b is activated.
It is now becoming a warning.

On the other hand, when the connector 6A or 6 of the frame sequential type scope 2A or 2C is connected to the frame sequential type signal connector receiver 12a, the warning circuit 66a does not operate and no warning is issued. (If the connection is correct, the LED will
It may be displayed by lighting up. ) Similarly, when the connector 6B or 6D is connected to the color mosaic type connector receiver 12b or the color mosaic type scope 2B or 2D, the warning circuit 66b does not operate. (Identifies the correct connection and indicates it in a different position or color than in the warning case)
It may be displayed by lighting an LED. )Also, a warning may be issued when two signal connectors are connected to both signal connector receivers 12a and 12b at the same time.

As described above, in this embodiment, the image pickup apparatus main body 1a includes a light source device 15 that shares a light source for both frame-sequential type and white light, and a frame-sequential type video processor 25a.
and a color mosaic video processor 25b. Then, this imaging device main body 1
In a, a light source connector receiver 11 common to all scopes 2 and a plane sequential signal connector receiver 12 are shown.
a and color mosaic signal connector receiver 12
b is provided, and field sequential type scopes 2A, 2C are provided.
Regardless of which of the color mosaic type scopes 2B and 2D is connected, it is possible to supply illumination light and perform signal processing corresponding to the connected scope, and to display the subject image captured by the scope on the color monitor 13. Can be displayed in color.

Also, when using Fiberscope 2E,
By connecting the light source connector 5E to the light source connector receiver 11, white light can be supplied to the fiberscope 2E for naked eye observation.

Moreover, since the light source connector receiver 11 is common to all scopes 2, if the light source connectors are separate depending on the system, it may be connected to the connector receiver of another system by mistake. is prevented and operability is good.

In addition, in this embodiment, since the light source unit is shared between the field sequential type scope and the white light type scope, it is possible to use the field sequential type or mosaic type scope and the fiber scope 2E without providing two sets of light source units. can.

Furthermore, in this embodiment, if an incorrect scope is connected to the two sets of signal connector receivers 12a and 12b provided on the imaging device main body 1a,
The identification circuit 28a or 28b can detect that the connection is not correct, and the warning circuit 66a or 66b can issue a warning.

Therefore, if one imaging device main body 1a is provided,
It is compatible with scopes with different color imaging methods, and can also be used with the fiberscope 2E at the same time. Furthermore, if an incorrect connection is made, a warning is given, making the device easy to use.
It goes without saying that erroneous connections can be eliminated if the connectors 6 (connector receivers 12a, 12b) have different shapes for the field-sequential type and the mosaic type.

Furthermore, the output formats of the signals after signal processing are the same for the two color imaging methods. In other words, the same color monitor 13 can be used because it matches the three primary color output or the NTSC video signal. (This color monitor has 3
Either one that supports primary colors or one that accepts an NTSC format video signal may be used. ) In addition, a fiberscope 2E and a TV camera 8C are installed.
Or, if the 8D is attached, the captured image will be displayed on the color monitor 13, but if the TV camera 8C or 8D is detached, the fact that it has been detached will be displayed on the screen of the color monitor 13. You can also do it. That is, for example, it may be displayed that the fiberscope 2E is being observed, or a certain image may be displayed.

Furthermore, the rotary filter section 13 of the light source device 15
3 may be moved manually.

Furthermore, when the light source unit is shared between the field sequential type and the white light type, instead of moving the rotary filter unit 133, the light source lamp 31, condensing lens 34, and light source connector receiver 11 are moved integrally. You can do it like this.

9 and 10 show an example of a specific configuration of the light source device in the first embodiment.

As shown in FIG. 9, white light emitted from a light source lamp 31 housed in a lamp house 301 passes through a cold filter 302, an aperture 303, and a condensing lens 304, and then passes through a rotating filter 33a.
The light is transmitted through the light, is focused by the condenser lens 34, and is incident on the light guide 14 of the scope attached to the light source connector receiver 71.

The rotary filter 33a and the motor 32a that rotates it are moved by a mechanism as shown in FIG. 10. That is,
The motor 32a is mounted on a plate-shaped mounting bracket 30.
6, and a flange portion 307 bent in the horizontal direction is attached to the lower part of this mounting bracket 306.
is formed. Two rails 134, 134 fixed to the housing side of the control device are provided in parallel on the lower side of the flange portion 307, and the rails 134, 134 are provided in parallel on the bottom of the flange portion 307.
Slide part 30 shaped to sandwich 4,134 from left and right
8 is formed. And this slide part 3
08 is slidably fitted to the rails 134, 134, and the rotary filter 33a and the motor 32a
A rotary filter section 133 consisting of a rotational position sensor (not shown) is movable.

Furthermore, a rack gear 310 is attached to the surface of the mounting bracket 306 on the light source lamp 31 side along the moving direction of the rotary filter section 133. A worm gear 312 rotated by a motor 311 is connected to this rack gear 310.
are engaged. Note that the rotary motor 311 is fixed to the housing side of the control device by a bracket 313. By rotating the motor 311 forward and backward, the worm gear 3
12 and a rack gear 310, the rotary filter section 133 can be moved.
The motor 311 is controlled by a movement control circuit 135 shown in FIG. 2, for example.

Further, flat prismatic switch pressing portions 315a and 315b are protruded from the upper surface of both ends of the flange portion 308 of the mounting bracket 307 in the moving direction. Further, at both ends of the movement range of the rotary filter section 133, the switch pressing section 315
Micro switches 316a and 316b for detecting switching positions are provided at the positions pressed by the switches 316a and 315b. And this micro switch 316
a, 316b are the switch pressing parts 315a, 3
15b, it is detected that the rotary filter section 133 has reached the end of its movement range, and the rotation of the motor 311 is stopped to restrict the movement range of the rotary filter section 133. I have to. In the illustrated example, the switch pressing portion 315a
When the micro switch 316a is pressed, white light from the light source lamp 31 passes through the rotating filter 33a and enters the light guide 14 as field-sequential illumination light, while the switch pressing part 315b
When the microswitch 316b is pressed, the white light from the light source lamp 31 enters the light guide 14 without passing through the rotary filter 33a.

Incidentally, as shown in FIG. 11, the rack gear 3
Instead of the combination of 10 and worm gear 312,
The rotary filter section 133 uses a rack gear 310 and a pinion 322 that meshes with the rack gear 310 and is rotationally driven by a gear motor 321 consisting of a motor 321a and a reducer 321b that decelerates the rotational output of the motor 321a. You may also move the .

FIG. 12 shows a modification of the moving mechanism for the rotary filter section.

In this example, the rotary filter section 133 is attached to the enlarged diameter side of a substantially sector-shaped mounting bracket 335. The end of the mounting bracket 335 on the small diameter side is attached to the output shaft of the gear motor 321, and by rotating the gear motor 321 in forward and reverse directions, the mounting bracket 335 and the rotary filter section 133 attached thereto are rotated. I am now able to move. Furthermore, at both ends of the rotation range of the mounting bracket 335, there are micro switches 316a, which detect when the sides of the rotation direction of the mounting bracket 335 are pressed, the end of the rotation range has been reached. 316b is provided. In the illustrated example, the micro switch 3
16a is pressed, the white light from the light source lamp 31 is transmitted through the rotary filter 33a, while when the micro switch 316b is pressed, the white light from the light source lamp 31 is not transmitted through the rotary filter 33a. The light is made to enter the light guide 14 without any interference.

FIG. 13 shows another modification of the rotating filter section moving mechanism.

In this example, the rotary filter section 133 is attached to a mounting bracket 336, and a rail 134 fixed to a main body mounting bracket 338 fixed to the housing side of the control device is attached to the surface of the mounting bracket 336 on the light source lamp 31 side. , 134 is provided with a slide portion 337 that is slidably fitted in the portions. The rotary filter section 133 attached to the mounting bracket 336 is attached to the rail 13.
4,134. Further, a lever 339 extends from the front surface of the mounting bracket 336 in the direction in which light from the light source lamp 31 travels, and a knob 340 is provided at the tip of the lever 339. This knob 34
For example, the rotary filter section 133 can be moved by grasping this knob 339 and moving the lever 339 in the moving direction of the rotary filter section 133. It can be moved manually. In addition, the lever 339
Micro-switches 31 are provided at both ends of the movement range of the lever 339 to detect when the sides of the lever 339 in the movement direction have reached the end of the movement range.
6a and 316b are arranged. In the illustrated example, when the micro switch 316a is pressed, the white light from the light source lamp 31 passes through the rotary filter 33a, while when the micro switch 316b is pressed, the white light from the light source lamp 31 passes through the rotary filter 33a.
The white light from the rotary filter 33a is made to enter the light guide 14 without passing through the rotary filter 33a.

FIG. 14 shows still another modification of the moving mechanism for the rotary filter section.

In this example, rotating filter section 133 is mounted to mounting bracket 361. At the bottom of this mounting bracket 361 are two legs 362,
363 is provided, and these leg portions 362, 363,
A guide shaft 364 fixed to the housing side of the imaging device main body passes through it. The rotary filter section 133 attached to the mounting bracket 361 is movable along the guide shaft 364. Further, one leg 362 is projected downwardly more than the other leg 363, and a predetermined interval is provided on both sides of the leg 362 in the moving direction. Stoppers 365, 365 are provided to limit the range of movement of the rotary filter section 133. Further, a compression coil spring 366 is fitted onto the guide shaft 364 on the outside of the leg portion 363 on the right side in the figure. This compression coil spring 366 has one end in contact with or fixed to the leg portion 363 and the other end in contact with or fixed to the housing side of the imaging device main body, and biases the mounting bracket 361 to the left side in the figure. ing. On the other hand, a spring 367 made of a shape memory alloy is fitted onto the guide shaft 364 on the outside of the leg 362 on the left side in the figure. This spring 367 has one end in contact with or fixed to the leg portion 362, the other end in contact with or fixed to the housing side of the imaging device main body, and a power source 369 is connected to both ends via a switch 368. Ori,
By closing the switch 368, the spring 3
67 can be energized. In the shape memory alloy, when the martensite phase (low temperature side) reversely transforms into the austenite phase (high temperature side), the deformed martensite phase returns to the memorized shape of the austenite phase.

The spring 367 made of the shape memory alloy is
The expanded shape in the austenite phase is memorized, and by being energized and heated, the mounting bracket 361 is moved to the right in the figure against the biasing force of the compression coil spring 366.

In this example, when the spring 367 is not energized, white light from the light source lamp 31 passes through the rotary filter 33a, while when the spring 367 is energized, the spring 367 is expanded and the mounting bracket 361 is moved as shown in the figure. Moved to the right side and light source lamp 31
The white light from the rotary filter 33a is made to enter the light guide 14 without passing through the rotary filter 33a.

Incidentally, instead of the compression coil spring 366, a tension spring may be provided to bias the mounting bracket 361 to the right side, and the spring 367 made of the shape memory alloy may be formed to contract when energized.

FIG. 15 shows still another modification of the moving mechanism for the rotary filter section.

In this example, the rotary filter section 133 is connected to the support frame 3.
71, and the vertical ends of this support frame 371 in the figure slide on parallel rails 134, 134 fixed to the housing side of the imaging device main body via sliding auxiliary members such as linear ball bearings. They fit together freely. The rotary filter section 133 is movable along these rails 134, 134. Further, approximately at the center of the support frame 371, the movable shaft 373 of an air cylinder 372 is fixed to the housing side of the imaging device main body so that the movable shaft 373 is parallel to the moving direction of the rotary filter section 133. The tip is fixed. By driving the movable shaft 373 of the air cylinder 372, the rotary filter section 133 attached to the support frame 371 is moved. In addition, one rail 13
4 are provided with stoppers 375, 375 that limit the range of movement of the rotary filter section 133 by abutting the ends of the support frame 371.

Note that a solenoid and a plunger may be used instead of the air cylinder.

FIG. 16 is a perspective view showing an endoscope device according to a modification of the first embodiment.

In this example, the arrangement of the light source connector receiver and the signal connector receiver is different from that shown in FIG.

That is, on the front surface of the imaging device main body 182, a common light source connector receiver 183 is provided on the upper side, and below this light source connector receiver 183, a frame sequential type signal connector receiver 184a is provided. A mosaic signal connector receiver 187 is provided below the expression signal connector receiver 184a.

In FIG. 16, for example, the field sequential electronic scope 2
A, a fiberscope 2E, and a mosaic television camera 8D that can be connected to this fiberscope 2E.

Connector 18 of the screen-sequential electronic scope 2A
1 has a light source connector and a signal connector integrated, and can be connected to a light source connector receiver 183 and a field sequential signal connector receiver 184a of an imaging device main body 182.

On the other hand, the fiberscope 2E can be observed with the naked eye by connecting its connector 185 to the light source connector receiver 183. For example, a mosaic TV camera 8D can be attached to the eyepiece 7 to create a scope with a mosaic TV camera. The signal connector 186 of the mosaic television camera 8D can also be connected to the mosaic signal connector receiver 187 for use.

Although not shown in FIG. 16, it can also be used with a mosaic type electronic scope 2B, or with a fiberscope 2E connected to a frame sequential type television camera 8C.

By the way, the internal configuration of the imaging device main body 182 is as follows.
Similar to FIG. 2, these are arranged as shown in FIG.

For example, a frame-sequential video processor is housed in a box-like housing 188, and a housing 189 housing a mosaic-type video processor is disposed on the top surface of the box-like housing 188. A frame memory 190 forming a frame sequential video processor is also disposed on the top surface of the housing 188. The color monitor 13 is connected to the signal output ends of both housings 188 and 189 via a signal cable.

Note that a rotary filter 33a and a light source lamp 31 are arranged inside the light source connector receiver 183.

17 to 19 relate to a second embodiment of the present invention, in which FIG. 17 is a block diagram showing the configuration of the imaging device main body, FIG. 18 is a block diagram showing the configuration of the output circuit, and FIG. 19 is a connector. and a perspective view showing a connector receiver.

In this embodiment, as shown in FIG. 19, the light source connector receiver is shared in the imaging device main body 131, and the signal input terminal of the electronic scope 2 is also shared, and as shown in FIG. 17, The signal output side is also standardized.

The common light source connector receiver 71 and the common signal connector receiver 72 of the imaging device main body 131 are arranged vertically adjacent to each other on the front surface of the imaging device main body 131, as shown in FIG. 19, for example. and,
Connector 73A of the field sequential scope 2A or connector 3B of the mosaic electronic scope 2B
The light source connector and the signal connector are integrated, and the light source connector portion can be connected to a common light source connector receiver 71, and the signal connector portion can be connected to a common signal connector receiver 72. It's getting old. Similarly, the same applies to the light source and signal connectors of the field-sequential television camera scope 2C or the light source and signal connectors of the mosaic television camera scope 2D. Furthermore, the connector of the fiberscope 2E can also be connected to the light source connector receiver 71.

The internal configuration of the control device 131 is as shown in FIG. 17.

As shown in FIG. 17, the output signal of the type signal generating circuit (for example, 27A) that is input to the common identification circuit 28 via the common signal connector receiver 72 is transmitted to the scope connected by this identification circuit 28. Discern. This identification circuit 28 controls the switching of the newly provided changeover switch 103 in addition to controlling both the drivers 26a and 26b as in the first embodiment. For example, when the field sequential type scope 2A or 2C is connected as shown in FIG. The signals applied and read out from the solid-state image sensor 18 or 22 are input to the frame-sequential process circuit 41a.

On the other hand, if the frame-sequential scopes 2A and 2C are not connected, the driver 26b and mosaic process circuit 41b are selected.
Incidentally, the case of the mosaic type scope 2B or 2DF may be detected and the changeover switch 103 may be switched to the mosaic type side.

The identification circuit 28 also sends a control signal to the shared timing generator 52a, so that it can handle either method.

Furthermore, in this embodiment, the signal that has passed through the process circuit 41a or 41b is outputted, for example, through an output circuit 80 shown in the eighteenth section.

This output circuit 80 is a matrix circuit 44a.
3 between the output end of the NTSC encoder 45a and the NTSC encoder 45a
A 2-contact circuit changeover switch 81 is provided, and a 3-circuit 2-contact changeover switch 82 is also provided between the output end of the inverse matrix circuit 44b and the buffers 42b, 42b, 42b forming the driver.

When one contact side of the changeover switch 81 is turned on, the signal from the matrix circuit 44a is guided to a common NTSC encoder 45, which converts it into an NTSC video signal and outputs it from the common NTSC output terminal 46. do. When the other contact side is selected, the signal from the mosaic process circuit 41b is guided to the NTSC encoder 45,
It is output from a common NTSC output terminal 46.

On the other hand, as for the other changeover switch 82, when the frame sequential type side is selected, the output signal of the frame sequential type process circuit 41a passes through the common buffers 42, 42, 42 forming a driver and is output from the common RGB output terminal 42. Three primary color signals are output. Furthermore, when the mosaic type process circuit side is selected, the three primary color signals R, G, and B that have passed through the inverse matrix circuit 44b are outputted from the common RGB output terminal 43.

The changeover switches 81 and 82 can each be switched manually, or they can be switched in conjunction with each other. Also,
Using the type signal output from the scope connected to both the changeover switches 81 and 82 as shown in FIG. It is also possible to switch to the process circuit 41a or 41b that performs signal processing corresponding to the scope.

The configuration of the light source device 15 is similar to that of the first embodiment.

According to this embodiment, the light source part is shared between the field sequential type and the white light type, and the light source connector receiver 71 and the signal connector receiver 72 are also common, so you can simply connect the scope. This prevents erroneous connection of the connector of the scope 2 to a connector receiver of a different type, and improves operability and ease of use.

Incidentally, instead of using the output circuit 80 shown in FIG. 18, it is also possible to have separate output terminals for the frame-sequential type and the mosaic type as shown in FIG. 2.

In this embodiment, as in the first embodiment, if the light source connector of the fiber tube 2E is connected to the light source connector receiver 71 of the imaging device main body 131, observation with the naked eye can be performed.

Incidentally, when only the connector of the fiberscope 2E is connected to the light source connector receiver 71, a means for detecting the connection is provided to display on the monitor that the fiberscope 2E is connected. Also good.

20 to 22 relate to the third embodiment of the present invention, in which FIG. 20 is a block diagram showing the configuration of the main body of the imaging device, FIG. 21 is an explanatory diagram showing a rotating filter, and FIG. 22 is a frame-sequential type. FIG. 2 is a block diagram showing a process circuit.

In this embodiment, by using R, W (white light), and B as the field sequential illumination light instead of R, G, and B, the light source can be shared between the field sequential illumination and the white light. This is what I did.

In the light source device 15e housed in the imaging device main body 151 in this embodiment, a circular filter 152, which is used for sequentially illuminating a surface with the R, W, and B illumination lights, has a circular plate as shown in FIG. A fan-shaped window is provided in the filter frame 153, and color transmission filters 154R, 154W, and 154B for R, W, and B are attached to each window. This W transmission filter 154W is R, G, B
It is a filter that passes through. (Incidentally, a transparent plate may be used to allow all of the white light to pass through.) In addition, R, W, and B color transmission filters 154R, 1
54W, 154B are solid-state image sensors 18 or 22
The length of the arc shape is adjusted so that the illumination period is different depending on the photosensitive characteristics of the light source.

The filter frame 153 has R, W, and B so that it can detect the read time immediately after being illuminated with R, W, and B.
W, B color transmission filters 154R, 154W, 1
Read pulse (detection) holes 155R and 155 are provided near the ends of 54B (with respect to rotational direction A), respectively.
W, 155B are provided. The positions of these read pulse holes 155R, 155W, and 155B are such that when the light emitting element and the filter frame 153 are sandwiched between the read pulse holes 155R, 155W, and 155B, when the read pulse holes 155R, 155W, and 155B reach positions facing the photo sensor 156, which is disposed opposite to each other so as to sandwich the light emitting element and the filter frame 153, the light from the light emitting element is received by the photo sensor 156 in a pulsed manner. It can be detected by When this pulsed light is detected, a detection signal is transmitted to the timing generator 52a, and the driver 26
A read drive pulse is applied to the solid-state image sensor 18 or 22 via a or 26b.

The filter frame 153 is provided with a start pulse hole 157, for example, at a position radially adjacent to the read pulse hole 155R, and when this position reaches a position facing the photo sensor 158,
Photo sensor 158 outputs a start pulse.

Furthermore, in order to detect the position of the W color transmission filter 154W, an arcuate long hole 159 is formed at the outer circumferential position of the color transmission filter 154W, and this long hole 159 can be detected by a photo sensor 160. By W color transmission filter 154W
It is possible to detect the position of The output of this photo sensor 160 is transmitted to the rotary filter 1.
The stop position of 52 is controlled. In other words, when the motor 32a that rotationally drives the rotary filter 152 is not in the rotational driving state, the output of the photo sensor 160 is rotated so that the stop position of the rotary filter 152 is a position where the elongated hole 159 faces the photo sensor 160. The signal is input to the stop control device 161 and controls the stop position of the rotary filter 152. In this stop position state, the illumination light from the light source lamp 31 passes through the W color transmission filter 154W and faces the light source connector receiver 71, so that white illumination light can be supplied. Note that when a fiberscope is connected to the connector receiver 71 and nothing is connected to the connector receiver 72, or when the connector receiver 7
When nothing is connected to either 1 or 72 (both states can be identified by the identification circuit detecting a high impedance state), or when a mosaic scope is connected, this white illumination state occurs. .

On the other hand, when the frame-sequential scope is connected, the identification circuit 28 detects the connection and outputs a command signal to rotationally drive the motor 32a to the rotation/stop control circuit 161. When the light is on.

Note that in this embodiment as well, as in the second embodiment, the light source connector receiver 7 of the imaging device main body 151 is
1 is commonly used for white light and for field sequential type. Further, the signal connector receiver 72 is also used in both the field sequential type and the mosaic type. Therefore, the light source connector receiver 71 and the signal connector receiver 72 are as shown in FIG. 19, for example. Although FIG. 19 shows two electronic scopes 2A and 2B, other scopes 2C, 2D, and 2E can also be connected.

By the way, in this embodiment, the frame sequential illumination light is R,
Since G and B are not used, the frame sequential process circuit 162 has a configuration as shown in FIG. 22, for example.
That is, in the process circuit 41a shown in FIG. 6, the G frame memory 58G is replaced with the W frame memory 58W (although the memory contents are different, the same frame memory can be used in terms of hardware), and the W frame memory 58G is replaced with the W frame memory 58W (although the memory contents are different, the same frame memory can be used in hardware). The W color signal read from the memory 58W and converted into an analog signal by the D/A converter 59 is input to the subtracter 163, and the R color signal and the B color signal are subtracted to generate the G color signal. The other parts are the same as the process circuit 41a shown in FIG.

The imaging device main body 151 shown in FIG. 20 is substantially the same as that shown in FIG. 17 with respect to other configurations.

According to this embodiment, as in the second embodiment, the light source section is shared between the white light and the field sequential type, and it can be used simply by connecting a scope, making it easy to use. Further, there is no need to newly provide a moving means for moving the light source section or the rotary filter section, and thus the cost can be reduced and the size can be reduced.

Further, in the above embodiment, in the case of frame sequential illumination, R,
Although it is performed with W and G, it is not limited to this, for example, R, G, W; W, G, B;
It is also possible to illuminate with Cy (cyan), Ye (yellow), W; Cy, W, Mg (magenta); W, Ye, Mg, etc.

In this embodiment, the output circuit 80 may be used to provide a common output terminal for the field sequential type and the mosaic type.

Furthermore, the video processor side may be configured as shown in FIG. 2, and signal connector receivers may be provided separately for the frame-sequential type and the mosaic type. In this case, the connector receiver becomes as shown in FIG. 1 or FIG. 16, for example.

In addition, a fiberscope 2 is attached to the connector receiver 71.
When E is connected and nothing is connected to the connector receiver 72, an image may be displayed on the color monitor 13 to indicate that the fiberscope is being observed.

23 to 25 relate to a fourth embodiment of the present invention, in which FIG. 23 is a perspective view showing the external appearance of an endoscope device, FIG. 24 is a block diagram showing a combined state of a field sequential scope, FIG. 25 is a block diagram showing a combination of mosaic scopes.

In this embodiment, the imaging device main body 191 is separated, and the light source device 19 is shared by all scopes 2.
2, and a frame sequential video processor section 193a shown in FIGS. 23 and 24 or a mosaic video processor section 193b shown in FIG. 25. As shown in FIG. 23, a light source connector receiver 194 common to all scopes 2 is provided on the lower front side of the light source device 192, while a signal connector receiver 194 is provided on the front upper side of each video processor section 193a or 194b. A connector receiver 195 is provided, and when the light source device 192 is stacked on the top surface of the video processor section 193a or 193b (FIG. 23 shows one video processor section 193a), ), and are provided in vertically adjacent positions.

On the other hand, in the field-sequential electronic scope 2A, the connector 197 has a light source connector part and a signal connector part integrated, and the light source device 192 and video processor part 193a are overlapped as shown in FIG. It can be connected to both connector receivers 194 and 195.

On the other hand, for example, in the mosaic type electronic scope 2B, the connector is divided into a light source connector 198 and a signal connector 199.
199 can be connected to connector receivers 194 and 195, respectively. Further, for example, for the fiberscope 2C with a frame-sequential TV camera, the light source connector 198 and the signal connector 200 can be connected to the connectors 194 and 195, respectively.

Incidentally, the light source device 192, like the light source device 15 shown in FIG. 2 or FIG. This is what I did.

In addition, the lens 3 in FIG. 2 or FIG.
4 are two lenses 34', 3 in this embodiment.
I set it to 4'.

This light source device 192 is provided with a connector receiver 203 to which one of the connectors 202 of the cable 201 is connected in order to send timing pulses of the timing generator 52a to a separate frame-sequential video processor section 193a. Similarly, the frame sequential video processor 193a is also provided with a connector receiver 203.

Further, the light source device 192 is provided with a connection detection circuit 204 that detects whether the connector 202 of the signal cable 201 is connected to the connector receiver 203, and as shown in FIG. 24, when the cable 201 is connected, The output of this circuit 204 outputs a movement command signal to the movement control circuit 135 to move the rotary filter 133 along the rails 134, 134,
A rotary filter 33a is interposed in the illumination optical path,
It allows for sequential illumination.

On the other hand, there is also a connection detection circuit 2 in the frame sequential video processor section 193a that detects whether the connector 202 of the cable 201 is connected to the connector receiver 203.
05 is provided, and the output of this detection circuit 205 is input to the warning circuit 66a. Therefore, when the identification circuit 28a detects that the field-sequential scope 2A or 2C is connected, the warning circuit 66a connects the connection detection circuit 205 to the cable 201.
When a detection signal indicating that the cable 201 is not connected is input, a warning buzzer 206a, a warning light 207a, etc. are used to warn that the cable 201 is not connected. A warning is also given when the signal connector 199 of the mosaic scope 2B, 2D is connected to the signal connector receiver 195.

A timing pulse from the light source device 192 via the cable 201 is outputted as a control signal to a driver or the like via a pulse generator 208 in the video processor section 193a. The rest of the configuration is similar to the video processor 25a shown in FIG.

Furthermore, the structure of the mosaic video processor section 193b shown in FIG. 25 is similar to the video processor 25b shown in FIG.

The video processor section 193b is provided with a warning circuit 66b that operates based on the output of the identification circuit 28b. When the connection is made, it is detected that the connection is incorrect, and a buzzer 206b or a warning light 207b is used to warn the user. The rest of the structure is the same as that shown in FIG. 2.

Note that when the mosaic scope 2B or 2D or the fiber scope 2E is connected, the rotary filter section 133 is not moved, and therefore the white light from the light source lamp 31 is transmitted through the lenses 34',
The condensed light is irradiated onto the connector 198 via 34'.

According to this embodiment, one light source device 192 can handle a field sequential type or mosaic type scope, or a fiber scope. Further, as shown in the illustrated example, the video processor sections 193a and 193b are selected according to the scope to be used, and the light source device 1 is
92, and can also be used when using other video processors that are not combined with this light source device.

Although FIG. 24 shows the state in which the field-sequential electronic scope 2B is connected, its connector 197 is separated for convenience.

In the embodiment described above, the connectors can be connected even if they are integrated as in the case of the field sequential type scope 2A or separated as in the case of the mosaic type scope 2B.

In FIG. 23, the light source and signal connectors 197 of the field sequential electronic scope 2A are integrated, but they may be separated as in the case of the mosaic electronic scope 2B. Conversely, the connectors 198 and 199 of the mosaic electronic scope 2B may be integrated.

Although it is preferable to have the connection detection circuits 204, 205, etc., they are not absolutely necessary.

Further, in the embodiment described above, the rotary filter section 133 is movable, but the light source lamp 31,
Lenses 34', 34' and light source connector receiver 1
94 may be moved.

In addition, video processor sections 193a and 193b
A signal for increasing or decreasing the amount of light from the lamp 31 may be sent from the side to the light source device 192 via a signal line (not shown) for automatic dimming.

Further, in the light source device 192, the rotation filter section 133 may be moved manually without depending on the output of the connection detection circuit 204.

FIG. 26 is a block diagram showing a light source device according to a fifth embodiment of the present invention.

In this embodiment, as in the fourth embodiment, a light source device 192' that is separate from the video processor and is shared by the frame-sequential light source and the white light source includes:
The rotary filter 152 shown in FIG. 21 is used as the rotary filter of the rotary filter section 133 in FIG. 24, and the rotation/stop is controlled by a rotation/stop control circuit 161 (see FIG. 20) instead of having a movable structure. That's what I do. In this case,
A field sequential process circuit 162 shown in FIG. 22 is used in place of the field sequential process circuit 41a shown in FIG.

This light source device 192' is similar to the fourth embodiment,
As shown in FIGS. 24 and 25, it can be used in combination with a frame sequential video processor section 193a or a mosaic video processor section 193b.

According to this embodiment, similarly to the fourth embodiment, one light source device 192' can handle a field-sequential or mosaic-type scope, or a fiberscope, and can also move the light source section and rotating filter section. No means are required, and cost and size reductions are possible.

27 and 28 show a rotating filter of a light source device according to a sixth embodiment of the present invention.

In this embodiment, as shown in FIG.
72R, 172G, 172B are provided, and, for example, R, B color transmission filters 172R, 1
A white illumination hole 173 is provided in the light-shielding portion between 72B, and this hole 173 is provided with a light-shielding plate 174 that is rotatably attached to a position in the middle of a line connecting this hole 173 and the center. It is designed to block light.

That is, when the filter frame 171 is rotated by the motor 32a, the light shielding plate 174 connects the central position of the disc-shaped light shielding part and the pivot point by centrifugal force as shown in FIG. The direction coincides with the radial direction, and in this state, the hole 173 is blocked by the light shielding plate 174, and normal R, G, and B surface sequential illumination can be performed.

On the other hand, when it stops, centrifugal force does not work, so the light shielding plate 174 is moved by gravity to the hole 17, as shown in FIG.
It is designed to evacuate from 3.

The filter frame 171 has holes 17 in the stopped state.
3 is positioned on the optical axis connecting the light beam lamp and the lens 34. For this position control,
Alternatively, the filter frame 17 is used for timing detection of solid-state image sensor signal readout when sequentially reading R, G, and B surfaces.
1 is provided with a large number of holes 175, 175, . Furthermore, the 27th
In the figure, a photo sensor 176 is attached to the tip of a sensor attachment plate 177.

In this embodiment, the rotation/stop of the motor 32a is controlled by a rotation/stop control circuit 161 shown in FIG. 20, for example, and the video processor side can also have the same configuration as shown in FIG. 20, for example. . However, instead of the frame sequential process circuit 162, a frame sequential process circuit 41a shown in FIG. 6 is used.

Further, as shown in FIG. 23, the light source device may be provided separately from the video processor.

According to this embodiment, the light source lamp can be shared without requiring a moving means for moving the light source section or the rotary filter section, and the sequential illumination light can be used for normal R, G,
B, and a normal field sequential process circuit as shown in FIG. 6 can be used.

FIG. 29 shows a modification of the sixth embodiment.

In this example, two slide plates 3 are provided on both sides of the hole 173 provided in the filter frame 171 in the rotational direction.
50 and 350 extend in the radial direction of the filter frame 171. A light shielding plate 351 having a size that can cover the hole 173 is fitted between the slide plates 350, 350 so as to be slidable in the radial direction of the filter frame 171. The light shielding plate 351 has one end attached to the other end of a spring 352 fixed to the filter frame 171 at a position closer to the center than the light shielding plate 351, and is urged toward the center by the spring 352. In addition, the filter frame 1 of the hole 173
A stopper pin 355 is provided on the outside in the radial direction of the light shielding plate 71 to restrict the movement of the light shielding plate 351 to the outside.

Then, when the filter frame 171 is rotated by the motor 32a, the light shielding plate 351
moves radially outward of the filter frame 171 against the biasing force of the spring 352 due to centrifugal force;
The resistor 173 is blocked, and the normal R, G,
It is now possible to perform sequential illumination of the frames B.

On the other hand, when the filter frame 171 is stopped, the centrifugal force does not work, so the light shielding plate 351 is moved inward in the radial direction of the filter frame 171 by the spring 352, as shown in FIG. I'm starting to evacuate.

FIGS. 30 and 31 show other modifications of the sixth embodiment.

In this example, the rotary filter 170' has a concave lens 180 attached to 173 of the filter frame 171 shown in FIG. 27, and the light source portion is shown in a cross section passing through this hole 173 as shown in FIG. 31.

The concave lens 180 defocuses the illumination light that is focused on the end face of the light guide fiber during illumination with white light to prevent the light guide fiber from burning out. In addition, concave lens 18
When zero is not inserted, that is, when it passes through a filter, it is focused on the end face of the light guide fiber. In this case, since the light is attenuated by a filter, the end face of the light guide fiber is almost never burnt out. Note that the lens 3 is inserted in the optical axis direction without intervening the concave lens 180.
4 or the light source lamp 31 (on a rail), the state may be set to a defocus state when illuminating with white light, and to a focus state when illuminating in frame sequential order.

By the way, the solid-state image sensor 22 of the television camera 8C or 8D connected to the fiberscope 2E
The number of pixels may be greater than the number of pixels of the solid-state image sensor 18 of the electronic scopes 2A and 2B to improve resolution. Incidentally, when the number of pixels of the solid-state image sensor of the television camera 8C or 8D is increased in this way, it is sufficient to provide a signal processing circuit means corresponding to the number of pixels of the television camera 8C or 8D.

Further, the number of pixels of each solid-state image sensor 18 of the electronic scopes 2A and 2B may be the same or different. That is, for example, the number of pixels in a field sequential type scope is small, and the solid-state image sensor in a mosaic type scope is designed to have a larger number of pixels than the solid-state image sensor in a field sequential type scope.
It is also possible to increase the resolution. The number of pixels of each solid-state image sensor of the television cameras 8C and 8D may be the same or different.

Further, the number of pixels of the solid-state image sensing devices of the frame-sequential electronic scope 2A and the mosaic television camera 8D may be the same or different. That is, for example, by reducing the number of pixels of the solid-state image sensor of the field-sequential electronic scope 2A, with the aim of making the diameter smaller and smaller,
The number of pixels of the solid-state image sensor of the mosaic television camera 8D may be greater than that of the solid-state image sensor of the frame-sequential scope 2A to achieve higher resolution. (Even if the TV camera is made a little larger, it is outside the body, so it will not have much of an effect and it is advantageous to have a higher resolution.) Also, the number of pixels of the solid-state image sensor of the mosaic electronic scope 2B and the frame sequential TV camera 8C is also Similarly, they can be the same or different.

For example, among the frame-sequential electronic scopes 2A, the number of pixels of the solid-state image pickup device or the length of the signal transmission cable may be different. In this case as well, the type signal generation circuit 2
7, the number of pixels and signal cable length are identified based on the type signal, and the method of driving the driver 26 is determined.
It may be changed to match the number of pixels and cable length. Further, the other scopes 2B, 2C, and 2D may be similarly configured.

In addition, in each of the above-mentioned embodiments, the light source lamp 31
A correction circuit means may be provided to correct the temperature dependence of the light emission characteristics.

Further, a color temperature return filter may be interposed in the optical path of the illumination light from the light source lamp 31 depending on the characteristics of the scope to be attached. As a result, when using an electronic scope, it becomes possible to select a light beam having an optimal energy distribution according to the spectral characteristics of the solid-state image sensor used.

Furthermore, the scope that allows naked eye observation is not limited to a fiberscope, but may also be one that uses a relay lens or the like as an image transmission means. Further, the present invention can also be applied to such a scope having a field sequential type or color mosaic type imaging means in the eyepiece section.

Note that different embodiments can be constructed by combining parts of the embodiments described above, and these also belong to the present invention.

[Effects of the Invention] As explained above, according to the present invention, it is possible to use both a frame-sequential type imaging means and a color mosaic type imaging means, and a common connection means allows scopes with different imaging methods to be used. can be connected to lighting means, which has the effect of improving operability.

[Brief explanation of drawings]

1 to 8 relate to a first embodiment of the present invention, in which FIG. 1 is a perspective view showing the entire system of an endoscope device, FIG. 2 is a block diagram showing the configuration of the imaging device main body, and FIG. The figure is an explanatory diagram showing the configuration of a fiberscope with a field-sequential type external camera, Figure 4 is an explanatory diagram showing the configuration of a color mosaic type fiberscope with an external camera, and Figure 5 is an explanatory diagram showing the configuration of the fiberscope. , FIG. 6 is a block diagram showing the configuration of a field-sequential process circuit, FIG. 7 is a block diagram showing the configuration of a mosaic process circuit, FIG. 8 is an explanatory diagram showing other states of the rotary filter section, and FIG. 10 and 10 are an explanatory diagram and a perspective view showing an example of a specific configuration of the light source device in the first embodiment, and FIG.
The figure is a perspective view showing a modification of FIG. 10, FIGS. 12 to 15 are explanatory diagrams showing a modification of the moving mechanism of the rotary filter section in the first embodiment, and FIG. 16 is a modification of the first embodiment. FIGS. 17 to 19 are perspective views showing an endoscope device according to an example, FIGS. 17 to 19 are related to a second embodiment of the present invention, FIG. 17 is a block diagram showing the configuration of the imaging device main body, and FIG. 18 is an output circuit. 19 is a perspective view showing the connector and the connector receiver, FIGS. 20 to 22 relate to the third embodiment of the present invention, and FIG. 20 is a block diagram showing the structure of the main body of the imaging device. 21 is an explanatory diagram showing a rotary filter, FIG. 22 is a block diagram showing a field sequential process circuit, FIGS. 23 to 25 relate to the fourth embodiment of the present invention, and FIG. 23 is an internal diagram. FIG. 24 is a block diagram showing the combined state of the field sequential type scope, FIG. 25 is a block diagram showing the combined state of the mosaic type scope, and FIG. 26 is a diagram showing the combined state of the mosaic type scope. FIGS. 27 and 28 are block diagrams showing a light source device according to a fifth embodiment, FIG. 27 is a perspective view showing a rotating filter, and FIG. 28 is a block diagram showing a rotary filter. FIG. 29 is an explanatory diagram showing a rotary filter according to a modification of the sixth embodiment; FIGS. 30 and 31 are diagrams showing another modification of the sixth embodiment;
Figure 0 is an explanatory diagram of the rotary filter, Figure 31 is the 30th diagram.
It is a partial sectional view of the figure. 1... Endoscope device, 1a... Imaging device main body, 2
A...Field sequential type electronic scope, 2B...Color mosaic type electronic scope, 2C...Field sequential type fiberscope with TV camera, 2D...Fibrescope with color mosaic type TV camera, 2
E...Fiberscope, 5A, 5B, 5C, 5
D, 5E...Light source connector, 6A, 6B, 6
C, 6D...Signal connector, 11...Light source connector receiver, 12a, 12b...Signal connector receiver, 15...Light source device, 31...Light source lamp,
33a... Rotating filter, 133... Rotating filter section.

Claims (1)

[Claims] 1. A scope equipped with a field-sequential color imaging means, a scope equipped with a color mosaic color imaging means, an illumination means for supplying illumination light suitable for both scopes, and signal processing for both scopes. A signal processing means, an illumination connection means common to both scopes, and a signal connection means capable of connecting both scopes to the signal processing means. An endoscope imaging device characterized by: