JP2002306411A - Processor for electroscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processor for an electroscope capable of observing an image just like one picked up by a CCD having a wide dynamic range or a high S/N ratio even when an image is picked up by a multi-pixel CCD made small-sized as a whole. SOLUTION: The processor for the electroscope is constituted of an illumination means for successively illuminating an observation area by at least two kinds of flashes having different luminous intensity with respect to respective colors among at least red, green and blue flashes, a control means for controlling the illumination means so as to illuminate the observation area one by one within a cycle transmitting a vertical synchronous signal by all of flashes and controlling an image pickup means so as to read accumulated charge as image data immediately after respective flashes are emitted and an image processing means for forming one image signal with respect to each color on the basis of a plurality of image signals transmitted from the image pickup means and outputting all of the formed image signals of respective colors at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic endoscope apparatus, and more particularly to a processor for a color electronic endoscope apparatus employing a frame sequential imaging system.

[0002]

2. Description of the Related Art In general, a color electronic endoscope apparatus adopting a frame sequential imaging system includes a processor having a light source unit and an image processing unit, and a scope which is inserted into a body and illuminates an observation region while simultaneously photographing. Electronic scope).

[0003] The conventional field sequential type electronic endoscope apparatus uses a processor equipped with a normal light source such as a xenon light source which can be continuously turned on. Continuous light emitted from the light source (hereinafter referred to as “continuous light”) is transmitted through red, green, and blue (hereinafter, referred to as R, G, and B) color filters provided on a rotary filter plate. The three primary colors are sequentially illuminated to illuminate the observation site. The CCD (Charge-Coupled Device) mounted on the scope of the electronic endoscope device is
An imaging operation of accumulating charges corresponding to the optical image formed on the light receiving surface by the incident light and reading out the charges at a predetermined timing is periodically performed. The read charge, that is, image data corresponding to the light of each of the three primary colors, is subjected to predetermined image processing in an image processing unit, and is sequentially stored in an image memory assigned to each of R, G, and B.

At a predetermined timing, the above-mentioned imaging operation and the operation of simultaneously reading out R, G, and B image data that are periodically updated by the imaging operation from each image memory and outputting them as video signals to a monitor or the like are performed. By repeating, the state of the observation site can be observed as a color image.

In recent years, other CCs used in various places
Like D, to obtain a clearer and more detailed captured image,
CCDs for electronic scopes also tend to have more pixels. In order to increase the number of pixels, for example, CCD for electronic scope
It is conceivable to increase the size of itself. But,
Due to the nature of an endoscope, which is inserted into the subject's body cavity to image the observation site, an increase in the size of the CCD leads to an increase in the size of the scope itself, which may cause unnecessary pain to the subject. Not valid. Therefore, CC for electronic scope
In order to increase the number of pixels of D, the size of one pixel of the CCD must be reduced.

However, when the size per pixel is reduced, the dynamic range of the CCD and the S / N ratio (Sig.
nal to Noise ratio). When the dynamic range or the like is reduced, the imaging area near the CCD becomes too bright, and so-called halation occurs.
The image area deep in the body cavity away from the CD is too dark to observe because of insufficient light quantity. Therefore, the surgeon
It is necessary to frequently adjust the position of the scope so that the observation site is imaged at a predetermined brightness, or to insert the scope deeper. This causes unnecessary pain to the subject, and furthermore, an efficient endoscopic procedure or examination cannot be achieved.

[0007]

Accordingly, the present invention has been made in view of the above circumstances, and has been made in view of the above circumstances. Even when an image is captured using a CCD having a large number of pixels and a reduced overall size, a wide dynamic range and a large dynamic range can be obtained. It is an object of the present invention to provide a processor for an electronic scope, which can observe an image similar to a case where an image is captured by a CCD having a high S / N ratio.

[0008]

According to the present invention, an electronic scope processor accumulates charges corresponding to an optical image formed on a light receiving surface only when an observation region is illuminated. It is a processor for an electronic scope having an imaging unit for imaging an observation site. The processor includes an illuminating means for sequentially illuminating at least two types of flashes of at least two types of flashes having different light intensities for each color to the observation site, and all flashes transmit a vertical synchronization signal. Control means for controlling the illuminating means so as to illuminate the observation site once in the cycle, and immediately after each flash is emitted, controlling the imaging means so that the accumulated charges are read out as image data; Image processing means for generating one video signal for each color based on a plurality of image signals transmitted from the imaging means and simultaneously outputting all the generated video signals of each color.

According to the above arrangement, an image is picked up by a plurality of flashes having different light intensities for each color, and an image signal of each color is combined into one video signal, so that an image is picked up by a CCD having a narrow dynamic range. In this case, a color image similar to that captured by a CCD having a wide dynamic range can be observed. That is, it is possible to observe a wide range from a brighter region to a darker region in the observation region. Further, since one video signal is generated by combining a plurality of image signals, it is possible to extract and combine only a signal having a high S / N ratio, so that a clearer image can be observed.

It is preferable that the illuminating means irradiates, for each color, a first flash which is not dimmed and a second flash which is dimmed by a predetermined ratio.

According to the electronic scope processor of the present invention, the image processing means reads, for each color, the first image data read from the imaging means by the first flash and the second image data read from the imaging means by the second flash. A plurality of data storage means for respectively storing the second image data, a data amplifying means for amplifying the second image data by a reciprocal of a predetermined ratio, and a first image data among the second image data amplified by the amplifying means. It is desirable to include a data truncation unit that truncates an overlapping area with the image data, and a data combining unit that combines the second image data and the first image data that have been truncated by the truncation unit.

According to the third aspect of the invention, the image signal (image data) transmitted from the CCD is first stored in the data storage means. A video signal can be generated by performing an amplification process, a truncation process, and a synthesis process on the stored image data for each color.

According to the processor for an electronic scope of the present invention, the illuminating means includes one light source that emits strobe light and a light source that is sequentially inserted in the optical path of the flash light and has wavelengths corresponding to at least red, green, and blue. A specific wavelength light transmitting means for transmitting only the light of the same wavelength, a non-light-reducing area which does not diminish the incident light every time the flash light is emitted, and a light-reducing area which diminishes the incident light at a predetermined ratio in the optical path. And dimming means inserted into the light emitting device.

In this case, it is desirable that the specific wavelength light transmitting means is a rotating plate having at least red, green and blue color filters provided for each predetermined angle range. The use of the rotating plate facilitates drive control in synchronism with the timing at which the light source emits flash light, and can easily generate red, green, and blue flash light.

Further, as the dimming means, a dimming filter arranged so that a non-dimming region and a dimming region are formed in each color filter can be used. More preferably, the neutral density filter is deposited on each color filter (claim 7).

Further, the illuminating means includes at least two light sources that alternately emit strobe light of different amounts, and at least red light provided for each predetermined angle range.
A rotating plate having green and blue color filters may be provided (claim 8).

[0017]

FIG. 1 is a schematic configuration diagram of an endoscope apparatus 100 equipped with a light source system according to an embodiment of the present invention. The endoscope device 100 includes a processor 100a and a scope (electronic scope) 100b. The processor 100a includes a light source unit 10, a control unit 20, an image processing circuit 30, and an operation panel 50. Scope 100b
Has a CCD 60 and a tip 71 of a light guide 70 at its tip.

The light source unit 10 includes a strobe light source 1, an aperture 2,
It has a condenser lens 3 and a rotary filter plate 4. FIG. 2 shows the rotary filter plate 4 viewed from the strobe light source 1. As shown in FIG. 2, the rotary filter plate 4 has a circular shape.
The rotary filter plate 4 is a color filter that transmits only three types of light of specific wavelengths of R, G, and B. For each of the color filters, a light reduction filter is not deposited (a light reduction rate of 0) and a light reduction. Filter with vapor deposition (dimming rate 1 /
2) two types of color filters 4a to 4f in total. In each code, 4a and 4b are R filters, 4
c and 4d are G filters, and 4e and 4f are R filters. Also, the color filters 4a, 4c, and 4e have the extinction ratio of 0.
Is shown. That is, each color filter 4a, 4c,
Reference numeral 4e changes the incident white flash light into R light, G light, and B light without dimming. Also, the color filters 4b, 4d,
Reference numeral 4f denotes a color filter having a dimming rate of 1/2. That is, the color filters 4b, 4d, and 4f reduce the amount of light (light intensity) of the incident white flash light to １ ／ while reducing the amount of R light, G light,
Change to B light. The color filters 4a to 4f are evenly arranged for each predetermined angle range with the frame (light shielding area) 4g interposed therebetween. In the text below, R, G,
The B light is referred to as a normal flash, and the R,
The G and B lights are referred to as dimming flashes.

Hereinafter, the imaging (observation) operation of the observation site in the endoscope apparatus 100 will be described in detail. The control unit 20 illuminates the observation site once with all types of flashes (in the present embodiment, all six types of flashes) generated by the rotary filter plate 4 during the period of transmitting the vertical synchronization signal, and performs imaging. The strobe light source 1 is controlled to emit light. That is, in the present embodiment, an image for one frame is generated by six times of light emission. Specifically, in the present embodiment, the control unit 20 first issues a first light emission instruction in synchronization with the transmission of the vertical synchronization signal. After completion of the charge accumulation and the charge reading by the first light emission, a second light emission instruction is immediately performed. The control unit 20 similarly performs until the sixth light emission instruction. When the sixth light emission instruction is completed, the control unit 20 does not issue a new light emission instruction until the vertical synchronization signal is transmitted again.

The strobe light source 1 emits a high-brightness and short-time white flash under the control of the light emission of the controller 20. The white flash emitted from the strobe light source 1
The light amount is reduced to a predetermined value. Here, the control unit 20
Controls the drive of the diaphragm 2 in accordance with the brightness of the image set by the operator by operating the operation panel 50. The white flash transmitted through the stop 2 enters the rotary filter plate 4 while converging the light beam width by the condenser lens 3.

The control unit 20 controls the rotation of the rotary filter plate 4 at a predetermined speed such that the white flash emitted from the strobe light source 1 sequentially enters each color filter. That is,
When the white flash emitted from the strobe light source 1 sequentially enters the color filters 4a to 4f, the normal R light, the reduced R light,
Two types of flashes having different dimming rates for each color of RGB, that is, a total of six types of flashes are sequentially generated in the order of normal G light, dimmed G light...

The flash transmitted through one of the color filters of the rotary filter plate 4 passes through the light guide 70 and sequentially illuminates the observation site from the light guide tip 71. The CCD 60 provided at the tip accumulates electric charges corresponding to the optical image formed on the light receiving surface by the light reflected and incident on the observation site.

The control unit 20 transmits a charge readout signal to the CCD 60 almost simultaneously with instructing the strobe light source 1 to emit light. Upon receiving the charge read signal transmitted from the control unit 20, the CCD 60 reads the accumulated charge. Thus, the image signal is transferred to the image processing circuit 30 as a change in voltage.

Here, due to the nature of the CCD 60, it is generally impossible to accumulate new charges during the charge readout period. Therefore, as described above, the control unit 20 finishes reading out the charge accumulated by the previous flash before the next light emission instruction, and prevents new charge accumulation during charge reading. In the imaging operation of the endoscope apparatus 100, charge readout is performed immediately after a short-time charge accumulation associated with a short-time flash emission. This allows CC
The period during which the D60 can accumulate electric charges can be shortened to a necessary minimum, and all six types of flashes can be reliably emitted within the period of transmitting the vertical synchronization signal.

FIG. 3 is a graph showing the image pickup characteristics of the CCD 60 when a normal flash or a dim flash is illuminated on a subject having a constant density. The horizontal axis of the graph of FIG. The closer to the right of the graph, the more the aperture 2 is opened, which means that the amount of flash light that passes through the aperture 2 and illuminates the subject (that is, the amount of light reflected by the subject and incident on the light receiving surface of the CCD 60) increases. I do. Since the object has a constant density, the amount of light incident on the light receiving surface of the CCD 60 directly corresponds to the brightness of the image. The vertical axis of the graph indicates the output voltage when the stored charge is read. Also, the solid line in FIG. 3 indicates the C when normal flashlight illuminates the subject.
9 shows an imaging characteristic (1) of the CD 60. A broken line in FIG. 3 indicates an imaging characteristic (2) of the CCD 60 when the subject is illuminated with a dimming flash.

In general, the charge (that is, the output voltage) that can be stored with respect to the amount of incident light in the CCD 60 increases the output voltage in accordance with the increase in the amount of incident light up to a predetermined amount of light.
However CCD60 is more saturation voltage V _{ma x} becomes saturated with a predetermined quantity or more of light is incident has a property that it is not output. For convenience of explanation, a predetermined amount of light corresponding to the saturation voltage V _max of the CCD60 it is assumed to be exactly half of the amount of flash light which has passed through the aperture fully open emitted from the strobe light source 1. Further, the dynamic range of the CCD 60 is narrow as shown by D1 in FIG. 3 because it depends on the saturation voltage.

Due to the above-described properties of the CCD 60, when the subject is normally illuminated with flash light, opening the aperture causes a flash light flux of a predetermined light quantity or more to pass through the CCD 60 through the subject.
Even when the light enters the light receiving surface, the saturation voltage V
_No more than _max is output (FIG. 3, imaging characteristic (1)).
That is, when a subject is illuminated with a large amount of flash light in a short time using the high-intensity strobe light source 1, the S / N ratio increases as the output voltage increases, but the CCD 60 is saturated in a brighter area. As a result, imaging becomes impossible and the image becomes white (halation).

Next, attention will be paid to the imaging characteristic (2) relating to the dimming flash. When using the dimming flashlight, by opening the aperture even increased the amount of time for illuminating the object, because the maximum amount of light is equal to a predetermined amount of light corresponding to the maximum output voltage V _max of the CCD 60, CCD 60 is saturated I will not do it. That is, since the image signal level is not as high as the imaging characteristic (1), the S / N ratio is low. However, the high-luminance part of the subject which is not output because of saturation in the imaging characteristic (1) can also be output as a video signal.

In view of the above imaging characteristics, in the present invention, as described in detail below, the image processing circuit 30 combines the image signal obtained by the imaging characteristic (2) and the image signal obtained by the imaging characteristic (1). Perform the following processing. Thereby, even if the image is captured by the CCD 60 having the dynamic range of D1, the virtual CCD having the imaging characteristic (3) obtained by adding a dashed line to the solid line indicating the imaging characteristic (1) in FIG.
The image having substantially the same image quality as that of the image pickup by the camera can be observed. More specifically, since the signal level is substantially the same as that of the imaging characteristic (1), a CC having a wider dynamic range D2 than that of the imaging characteristic (1) is maintained while maintaining a high S / N ratio.
An image substantially the same as the image captured by D can be observed.

FIG. 4 is a block diagram showing the inside of the image processing circuit 30. As shown in FIG.
Are A / D distributor 31, six memories (first R memory 32) for temporarily storing image data corresponding to each flash.
a, second R memory 32b, first G memory 32c, second G
Memory 32d, first B memory 32e, second B memory 32
f) and having a digital processor 40. FIG.
Among them, the alphabets of the symbols assigned to the memories correspond to the alphabets assigned to the color filters 4a to 4f. That is, the first R memory 32a, the first G memory 32
c, the first B memory 32e is a memory for storing image data generated by a normal flash, and the second R memory 32e
b, the second G memory 32d and the second B memory 32f are memories for storing image data generated by the dimming flash.

The image signal transmitted to the image processing circuit 30 is first subjected to digital conversion processing or the like by the A / D distributor 31 and then to the type of flash at the time of generating the image signal (that is, at the time of charge accumulation in the CCD 70). The memory 32a corresponding to
To 32f as image data.

For example, the image signal corresponding to the normal R light is
After performing a predetermined process, the image data is stored in the first R memory 32a as image data using normal R light. The image signal corresponding to the reduced R light is stored in the second R memory 32b as image data based on the reduced R light in the same manner as described above. The image data stored in each of the memories 32 a to 32 f is updated as needed by an image signal newly captured and transmitted to the image processing circuit 30.

In the image processing circuit 30, each of the memories 32a to 32a is synchronized with the vertical synchronizing signal transmitted from the control unit 20.
The image data is read from 33f and transmitted to the digital processor 40. The digital processor 40 includes a first processing unit 40R that generates an R video signal, a second processing unit 40G that generates a G video signal, and a third processing unit 40B that generates a B video signal. Each processing unit 40R-40B
Are amplifiers (41R, 41G, 41B), clip circuits (42R, 42G, 42B), signal synthesis circuits (43R, 43G, 43B), and data compression circuits (44
R, 44G, 44B), D / A converter (45R, 45
G, 45B). Since the processing performed by each of the processing units 40R to 40B on the image data of each color is common, here, the processing corresponding to the two types of R light read from the first R memory 32a and the second R memory 32b is particularly performed. The processing of the first processing unit 40R that generates the R video signal from the image data to be processed will be described in detail.

First, the image data corresponding to the dimmed R light read from the second R memory 32b is input to the amplifier 41R as an image signal. The amplifier 41R amplifies the signal level of the input image signal corresponding to the reduced R light until the signal level becomes equal to the signal level of the image signal corresponding to the normal R light. Specifically, the signal is amplified by the reciprocal times the dimming rate. In the present embodiment, since the light is １ ／ dimmed, the signal level of the image signal corresponding to the R light that has not been dimmed can be made the same by doubling it. The amplified image signal is transmitted to the clip circuit 42R.

Here, by being amplified by the amplifier 41R, an image signal substantially similar to that obtained when an image is picked up by a CCD having a wide dynamic range can be obtained (see image pickup characteristics (3) in FIG. 3). The S / N ratio is still low because the amount of light for illuminating is low. In particular, the noise ratio in the lower level signal is considerably large. Therefore, the light intensity section 42R expresses an area of the amplified image signal that overlaps with the image signal corresponding to the undimmed R light, specifically, an image signal corresponding to the undimmed R light. Is performed to cut out lower-order signals relating to a relatively dark area where the above-mentioned is possible.

The signal synthesizing circuit 43R includes the first R memory 32
a and the image signal corresponding to the R light that has not been dimmed and transmitted from the clip circuit 42R.
The image signal corresponding to the R light that has been reduced by 2 is combined with the image signal to make a single signal (video signal).

The signal synthesized by the signal synthesis circuit 43R is
After being compressed to a predetermined amount by the data compression circuit 44R, D
The analog image is converted by the / A converter 45R to generate an R video signal. At this time, the same processing as the processing of the first processing unit 40R is performed in the second processing unit 40G and the third processing unit 40B, and the G video signal and the B video signal are generated. The R, G, and B video signals are output simultaneously to video display means such as a monitor. Thereby, the monitor displays a color image corresponding to the video signal.

In a relatively dark area such as a deep part of an observation part, the image captured in this way is usually based on an image signal obtained by flashing, so that the image is clear with little noise. A relatively bright region such as an observation region near the CCD 60 has an appropriate brightness without causing halation since it is based on an amplified image signal obtained by the dimming flash. That is, an image substantially similar to that captured by a CCD having a high S / N ratio and a wide dynamic range (see imaging characteristics (3)) can be observed on the monitor.

The above is the embodiment of the present invention. The present invention is not limited to these embodiments, and various modifications can be made without departing from the gist.

In the above-described embodiment, the strobe light source 1 capable of emitting light with high luminance and for a short time is used as the flash light emitting means. However, a pseudo light source such as a xenon light source and a rotary slit plate are combined with a light source for irradiating continuous light. A configuration may be adopted in which flash light is generated. Further, the specific wavelength light transmitting means used to generate each color light of RGB only needs to be inserted in the optical path in order of the filters of each color, and is not limited to the rotary filter plate 4. For example, a configuration may be adopted in which a rectangular filter plate on which a plurality of color filters are arranged is moved linearly.

In the above embodiment, one color filter is used.
A / 2 neutral density filter is deposited to generate a plurality of types of flashes for one color. However, it is possible to irradiate a plurality of flashes having different light amounts for each color without using the neutral density filter. For example, a configuration may be adopted in which two or more strobe light sources having different luminances are provided, and flash light is emitted alternately.

In the above embodiment, the color filters provided on the rotary filter plate 4 are three colors of RGB. However, the present invention is not limited to this, and a plurality of filters can be provided. The dimming rate is also 0 and 1 in this embodiment.
Although the setting is made to be / 2, the setting can be made by dividing the setting more finely (for example, 0, 1/3, 2/3). Increasing the type of color and the type of extinction ratio enables the imaging and observation of a high-definition color image, but the number of imaging within the transmission period of the vertical synchronization signal also increases accordingly.
A high-performance CCD capable of transferring electric charges in a shorter time is required.

In the above embodiment, a １ ／ neutral density filter is vapor-deposited on the color filters that generate the R, G, and B flashes. However, the present invention is not limited to this. For example, instead of using an integrally formed filter as in the above embodiment, in addition to a rotary filter plate 4 having a plurality of color filters, a neutral density filter and an aperture are evenly arranged for each predetermined angle range. It is also possible to separately provide a dimming rotary filter plate.

[0044]

As described above, according to the present invention, at least two or more types of flashes having different light intensities are emitted for each color flash, a plurality of image signals related to the same color are subjected to predetermined image processing, and then a single flash is obtained. Even when a CCD having a large number of pixels and having a small overall size is used for imaging by synthesizing signals, a CCD having a high S / N ratio and a wide dynamic range is used. It is possible to obtain the same high-quality captured image.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an endoscope apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic view of a rotary filter plate according to an embodiment of the present invention.

FIG. 3 is a graph showing imaging characteristics of a CCD.

FIG. 4 is a block diagram of an image processing circuit according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Strobe light source 4 Rotation filter board 41a, 42c, 43e Color filter 41b, 42d, 43f Color filter with a dimming function 10 Light source unit 20 Control unit 30 Image processing circuit 40 Digital processor 60 CCD 100a Processor 100b Electronic scope 100 Endoscope device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 9/04 H04N 9/04 Z F-term (Reference) 2H040 BA00 CA04 CA09 GA02 GA05 GA10 4C061 CC06 GG01 LL02 NN01 QQ02 QQ07 QQ09 QQ10 RR02 RR03 RR15 RR17 RR26 SS07 SS11 5C022 AA09 AB13 AB15 AB17 AB65 AC42 AC52 AC55 5C054 CA04 CC07 CG02 DA05 EA01 EA05 ED06 EH07 FB03 FE04 FF02 FF03 GB11 GC03 HA04

Claims (8)

[Claims] 1. A processor for an electronic scope, comprising: imaging means for capturing an image of an observation site by accumulating electric charges corresponding to an optical image formed on a light receiving surface only when the observation site is illuminated, An illuminating means for sequentially illuminating at least two types of flashes of at least two colors of red, green, and blue with different light intensities for the respective colors on the observation site; and all the flashes within a period of transmitting a vertical synchronization signal. Control means for controlling the illuminating means so as to illuminate the observation region once each time, and controlling the imaging means so that the accumulated electric charge is read out as image data immediately after each flash is emitted. Generating one video signal for each color based on a plurality of image data transmitted from the imaging unit, and simultaneously outputting all the generated video signals of each color. And an image processing means. 2. The electronic scope processor according to claim 1, wherein said illuminating means irradiates, for each color, a first unflashed flash and a second flash reduced by a predetermined ratio. A processor for an electronic scope. 3. The electronic scope processor according to claim 2, wherein said image processing means comprises, for each color, said first image data read from said imaging means by said first flash and said second flash by said second flash. A plurality of data storage means for respectively storing second image data read from the imaging means; a data amplification means for amplifying the second image data by a reciprocal of the predetermined ratio; and A data truncation unit that truncates an overlapping area of the second image data with the first image data; a data combining unit that combines the second image data and the first image data that have been truncated by the truncation unit. And a processor for an electronic scope. 4. The electronic scope processor according to claim 1, wherein the illuminating means includes one light source that emits a strobe light, and is sequentially inserted into an optical path of the flash light. A specific wavelength light transmitting means for transmitting only light of wavelengths corresponding to red, green, and blue; and a non-attenuating region in which the incident light is not dimmed every time a flash is emitted; A dimming unit in which a light-attenuating region is sequentially inserted into an optical path. 5. The electronic scope processor according to claim 4, wherein the specific wavelength light transmitting means is a rotating plate having at least red, green, and blue color filters provided for each predetermined angle range. An electronic scope processor. 6. The electronic scope processor according to claim 5, wherein the dimming unit is arranged so that the non-dimming area and the dimming area are formed in each color filter. Having a filter,
An electronic scope processor. 7. The processor for an electronic scope according to claim 6, wherein the neutral density filter is deposited on each color filter. 8. The processor for an electronic scope according to claim 1, wherein said illuminating means comprises: at least two light sources which alternately emit strobe light of different light amounts; At least red, green,
A rotating plate having a blue color filter.