CN108601504A

CN108601504A - A kind of endoscopic system and its control method

Info

Publication number: CN108601504A
Application number: CN201680081278.3A
Authority: CN
Inventors: 李勇; 樊睿; 熊思思
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2016-11-25
Filing date: 2016-11-25
Publication date: 2018-09-28
Also published as: WO2018094695A1

Abstract

It is a kind of to be illuminated using semiconductor light source, the endoscopic system (100) of Image Acquisition is carried out using gray-scale sensor (113).The shortcomings that semiconductor light source can overcome the disadvantage that xenon source short life, luminous flux are unadjustable, special light observation light intensity is weak, and gray-scale sensor (113) can cause low resolution ratio and energy loss when can overcome low color sensor resolution ratio, easy saturation, the observation of special light.The light supply apparatus (2) that semiconductor light source is constituted has the adjustable characteristic of light ray energy, response difference of the compensating for gray-scale sensor (113) to different color light, the two cooperation can be coordinated to improve the picture quality of endoscopic system (100).

Description

A kind of endoscopic system and its control method

Technical field

[0001] the present invention relates to endoscopic technique fields, and in particular to a kind of endoscopic system and its control method.

[0002]

[0003] background technique

[0004] in medical field, the diagnosis based on endoscopic system is increasingly used in minimally invasive field.Organism inside can be observed by medical endoscope.The composition of endoscope are as follows: the insertion section of progress structure observation, the image processor that output image is handled inside the light supply apparatus of illumination light is provided, can be plugged into organism for endoscope.In the living tissue observation using endoscope, other than the normal light observation for using visible light (normal light) to illuminate, should also have and can be carried out the special light observation that blood vessel increases observation.

[0005] for neoplastic lesion, past Conventional white diagnosis is analyzed by the contrast difference of pathological tissues and normal tissue, and in recent years, special light, which is imaged in diagnosing tumor, to be applied.In narrow bandwidth imaging (Narro w Band Imaging, NBl), using the contrast of capillary can be improved by the narrow-band blue light or narrowband illuminated with green tissue that blood absorbs strongly.Different from normal tissue in the state that abnormal structure's medium vessels of canceration etc. occur for living tissue, blood vessel, which is emphasized to observe, thinks there is applicability in the diagnosis of early-stage cancer discovery.Therefore, how endoscope apparatus is configured, makes endoscope apparatus in the same inch for having both normal light observation and the observation of special light, the Image Acquisition being able to achieve is that technical staff makes great efforts always the technical issues of solving in the field

[0006]

[0007] summary of the invention

[0008] according to the first aspect of the invention, a kind of endoscopic system of exportable color image is provided, which includes light supply apparatus, insertion section and imaging control unit.Light supply apparatus includes semiconductor light source unit, and semiconductor light source unit is used to that inch to be divided to provide multiple monochromatic light of different wavelength range.The front end of insertion section is furnished with the gray-scale sensor for Image Acquisition, and gray-scale sensor divides inch to acquire picture signal under multiple monochromatic light.The picture signal that imaging control unit divides inch to acquire according to gray-scale sensor, it is corresponding to generate multiple monochrome images, and monochrome image is synthesized into color image. [0009] according to the second aspect of the invention, a kind of control method of endoscopic system is provided, the endoscopic system includes light supply apparatus, insertion section and imaging control unit, and light supply apparatus includes semiconductor light source, and insertion section includes the gray-scale sensor for Image Acquisition.The control method of the endoscopic system includes: that semiconductor light source alternately provides first monochromatic light and the second monochromatic light with different wavelength range, the first monochromatic light and the second monochromatic light directing insertion section；Gray-scale sensor carries out Image Acquisition under the first monochromatic light and the second monochromatic light respectively, and alternately produces the first picture signal and the second picture signal；And imaging control unit generates the first monochrome image and the second monochrome image respectively, the first monochrome image and the second monochrome image is synthesized color image according to the first picture signal and the second picture signal.

[0010] according to the third aspect of the invention we, a kind of endoscopic system including normal light observing pattern and special smooth observing pattern is provided.The system includes:

[0011] light source control portion is used to control the first semiconductor light source portion and works under normal light observing pattern, and the second semiconductor light source of control works under special optical mode；

[0012] first semiconductor light source portion, for dividing inch to provide multiple broadband light of different wavelength range；

[0013] second semiconductor light source, for providing narrow band light；

[0014] endoscope, including the insertion section that can be inserted into inside organism, the front end of the insertion section is furnished with the gray-scale sensor for Image Acquisition；And

[0015] control unit is imaged, monochrome image is generated according to the picture signal of gray-scale sensor acquisition under special smooth observing pattern, color image is generated according to the picture signal that gray-scale sensor divides inch to acquire under normal light observing pattern

[0016]

[0017] Detailed description of the invention

[0018] Fig. 1 is the schematic diagram of the endoscopic system of first embodiment of the invention；

[0019] Fig. 2 is the structural schematic diagram that wheel is divided in Fig. 1；

[0020] Fig. 3 is the spectral response curve figure of gray-scale sensor；

[0021] Fig. 4 is the schematic diagram of the endoscopic system of second embodiment of the invention；

[0022] Fig. 5 a is the first configuration diagram of compensating for gray-scale sensor spectrum non_uniform response in the present invention；

[0023] Fig. 5 b is the second configuration diagram of compensating for gray-scale sensor spectrum non_uniform response in the present invention；And

[0024] Fig. 6 is the flow chart of the control method of endoscopic system of the invention. [0025]

[0026] specific embodiment

[0027] present invention is described in further details below with reference to the drawings and specific embodiments.It should be understood that the explanation done in conjunction with specific embodiments is of the invention for clearly illustrating, without doing any restrictions to the present invention." proximal end " described in the present invention and " distal end " refers to that endoscopic system relative to the distance layout of operator, does not have restrictive sense equally in use.

[0028] the present invention provides a kind of endoscopic systems, the system enables endoscopic system to export higher picture quality, is imaged with higher Image Acquisition efficiency, the special light being more suitable under narrow band light from two angles of light supply apparatus and image acquisition device.The adjustable illumination advantage of semiconductor light source luminous flux is utilized in used light supply apparatus, is able to cooperate the gray-scale sensor for compensating the system to different monochromatic response characteristics, improves the total quality of output image.Used gray-scale sensor can reduce energy loss, improve color-resolution, it is easier to acquire the color component under each color light, and gray-scale sensor is able to cooperate the luminescent designs of semiconductor light source unit, it is exposed respectively in the case where multiple monochromatic light divide inch to irradiate, improves the utilization rate of light ray energy.

[0029] the present invention can provide a kind of endoscopic system, which includes endoscope, light supply apparatus, host and display；Can be under arrangement at other, which can further comprise the trolley of equipment carrying effect, form the pneumoperitoneum apparatus of pneumoperitoneum under minimally invasive environment, the cleaning equipment for cleaning endoscope etc..The light of light supply apparatus can be imported into position to be seen through endoscope by the endoscopic system, such as inside organism, the sampler of endoscope carries out Image Acquisition, and host generates the image at position to be seen according to acquisition signal, which can finally be shown by display.

[0030] luminous component of the light supply apparatus is semiconductor light source, it is possible to provide broadband light or narrow-band light (also referred to as narrow band light).Broadband light corresponds to common optical illumination, and light supply apparatus is enable to be used for normal light observation, and broadband can refer to the wavelength bandwidth of tens nanometers, but not limited to this；Narrow-band light corresponds to special optical illumination, and light supply apparatus is enable to be used for special light observation, and narrow-band is often referred to several nanometers of wavelength bandwidth, but not limited to this.The long service life of semiconductor light source, about 20000 small inch avoid the situation that light source unit is needed replacing during using endoscopic system as far as possible.The luminous flux of semiconductor light source can real inch adjust, the unit multiple monochromatic light for dividing inch to provide in this way according to system requirements, can especially cooperate the response characteristic of the sampler of endoscope, export the light of different luminous fluxes.

[0031] light supply apparatus may include the first semiconductor light source portion, be used to provide common optical illumination, first semiconductor Light source portion may include the first semiconductor light source and optical splitter, the light that first semiconductor light source generates obtains multiple broadband light through optical splitter, each broadband light has different wave-length coverages, so that endoscopic system is able to carry out colour imaging under the first semiconductor light source portion illumination.In specific embodiment below, the first semiconductor light source can produce exciting light, further fluorescent material be excited to generate monochromatic light；It can also be monochromatic multiple luminescence units of directly generation different wavelength range.Optical splitter can be the fluorescence colour wheel for being partly or entirely provided with different fluorescent materials, and fluorescent material can be coated in fluorescence wheel surface, also embeddable inside fluorescence colour wheel.Optical splitter can also for can the light to different wavelength range carry out the optical elements of different optical propagations.

[0032] endoscope of the system includes insertion section and image pickup part, and insertion section is the mirror body main body of a part, can be inserted into inside organism by operator.On the one hand on the other hand the introduction part (and light optical system 114 out) that there is the light for generating light supply apparatus to be transferred to position to be seen for insertion section has object side optical system and image acquisition device for Image Acquisition.The introduction part can be light-conductive optic fibre, and light supply apparatus is interior therefore equipped with for will imported into the Optical System Design of light focusing in optical fiber after the light focusing of generation.The image acquisition device is gray-scale sensor, and gray-scale sensor is received from after the light that position to be seen is reflected, through the corresponding picture signal for generating electrical signal form of photoelectric conversion.The picture signal is subsequently communicated to host, forms acquisition image.Gray-scale sensor resolution ratio with higher, and it is adjustable to different monochromatic response range dynamics, the phenomenon that image is saturated can be avoided the occurrence of as far as possible, and all pixels point of gray-scale sensor can respond under the irradiation of single light, and capacity usage ratio is high.Gray-scale sensor and semiconductor light source unit the endoscopic system combined application, can coordinated, the whole light ray energy utilization rate and output image quality for improving endoscopic system

[0033] host of the system may include imaging control unit, systems control division and image processor etc., and above-mentioned component can be integrally disposed, can also be the discrete component in host.Control unit, which is imaged, can control the picture signal that between the frame per second of gray-scale sensor and exposure inch and receivable gray-scale sensor exports, and accordingly generate image.What the light supply apparatus of the system issued is monochromatic light, and imaging control unit receives corresponding output monochrome image after picture signal, and each monochrome image is then synthesized color image.Control unit is imaged by colo r image transmission to systems control division, is then post-processed by image processor to color image is formed by, such as image detail enhancing, image denoising etc., finally shows treated image over the display.In some embodiments, which also only on the basis of the picture signal acquired under monochromatic light exposure, generates corresponding monochrome image, then output display [0034] above-mentioned endoscopic system is illuminated using semiconductor light source, Image Acquisition is carried out using gray-scale sensor, the disadvantage that light source life is short, luminous flux is unadjustable, special light intensity is weak can be overcome, low image sensor resolutions, easy saturation, special light observation resolution ratio and the shortcomings that energy loss can be overcome with inch, and the two, which mutually cooperates with, so that endoscopic system is efficiently obtained high quality graphic.

[0035] Fig. 1 shows the endoscopic system 100 of first embodiment of the invention.The endoscopic system 100 includes endoscope 1, light supply apparatus 2, host 3 and display 4;Wherein light supply apparatus 2 can utilize semiconductor light source unit 21, divide inch to provide multiple monochromatic light of different wavelength range, for illuminating；Endoscope 1 may include the gray-scale sensor 113 that its 11 front end of insertion section is arranged in, and be used for Image Acquisition；Host 3 may include imaging control unit 31, for controlling gray-scale sensor 113 between the exposure inch under each monochromatic light and for generating image.The monochromatic light that the endoscopic system 10 0 can divide light supply apparatus 2 inch to generate imported into position to be seen through endoscope 1, the gray-scale sensor 113 of endoscope 1 carries out Image Acquisition under monochromation illumination, inch is divided to generate picture signal, the imaging control unit 31 of host 3 divides inch acquired image signal using gray-scale sensor 113, corresponding monochromatic light image is generated respectively, then monochromatic light image is synthesized to the color image for reflecting position to be seen.The endoscopic system 100 can both overcome that source ends light source life that may be present is short, the nonadjustable disadvantage of luminous flux, low Image Acquisition end resolution ratio that may be present, easy saturation, the high disadvantage of energy loss can also be overcome, and the system constructed using semiconductor light source unit 21 and gray-scale sensor 113, there is higher light ray energy utilization rate, more flexible system regulative mode and more preferably picture quality.

[0036] light supply apparatus 2 can carry out common optical illumination based on broadband light.The semiconductor light source unit 21 of light supply apparatus 2 can divide inch to provide multiple broadband monochromatic light of different wavelength range, be used for normal light observing pattern, and endoscopic system 100 generates color image under common optical illumination.For example, multiple monochromatic light of different wavelength range, can be perceived as the light of different colours；For example, multiple monochromatic light of different wavelength range, can be feux rouges, green light, blue light, yellow light etc..It is subsequent semiconductor light source unit 21 to be described as point inch the light of different colours, only specific example are provided.Common optical illumination inch is being carried out using monochromatic light, gray-scale sensor 113 can divide inch to make the response of full figure vegetarian refreshments to the monochromatic light of different colours, resolution ratio and capacity usage ratio are high, to improve picture quality using its whole pixel.

[0037] light supply apparatus 2 can carry out special optical illumination based on narrow-band light.On the basis of semiconductor light source unit 21, light supply apparatus 2 may also include the narrow-band light source 22 for generating narrow band light, be used for special smooth observing pattern, and endoscopic system 100 generates the monochrome image with blood vessel enhancement effect under special optical illumination.Narrow-band light source 22 can For laser, LED light source or laser LED, such as narrow-band light source 22 blue light of at least any 1 value within the scope of 390nm-460nm can be taken for the laser of sending narrowband indigo plant laser, peak wavelength.Narrow-band light source 22 and semiconductor light source unit 21 divide inch to work, so that inch be divided to provide narrow band light and normal light.The endoscopic system 200 for being equipped with the light supply apparatus 2 can both carry out normal light observation, can also carry out special light observation.Special optical illumination inch is being carried out using narrow band light, gray-scale sensor 113 equally can make the response of full figure vegetarian refreshments to narrow band light using its whole pixel, and resolution ratio and capacity usage ratio are high, further increase the picture quality under special light observation.

[0038] light supply apparatus 2 can further comprise light source control portion 23 and dichroscope 24.The light source control portion 23 controls narrow-band light source 22 and semiconductor light source unit 21 divides inch to work under the control of host 3；That is, 22 Jian of narrow-band light source opens inch, semiconductor light source unit 21 is closed, and vice versa.The dichroscope 24 is arranged in the transmission optical path of multiple monochromatic light and narrow band light, and the optical path of multiple monochromatic optical paths and narrow band light synthesizes same optical path after dichroscope 24.For example, as shown in Figure 1, multiple monochromatic light transmissive dichroscopes 24, narrow band light can be reflected by dichroscope 24, so that the optical path of the two synthesizes same optical path；Vice versa.In the optical path after dichroscope 24, narrow band light and multiple monochromatic light then divide inch along the same optical path of synthesis, transmit to the direction of endoscope 1.

[0039] in some instances, light supply apparatus 2 may also include the coupling mirror 25 being arranged between dichroscope 24 and the light source introducing port of endoscope 1.The coupling mirror 25 can make to transmit the light focusing of coming from dichroscope 24, to preferably imported into endoscope 1, reduce light losing as far as possible, improve the integral illumination quality of system.Light, can preferably be imported into endoscope 1 (such as in light-conductive optic fibre) by the optical path synthesis of dichroscope 24 and the focussing force of coupling mirror 25.Same inch, the use of dichroscope 24 can make that 2 overall structure of light supply apparatus is more compact, light propagation path is shorter.

[0040] it is imaged between the light inch out that control unit 31 issues each light inch according to light supply apparatus 2, between the exposure inch for controlling gray-scale sensor 113, keep gray-scale sensor 113 identical between the light inch out of each light between the exposure inch under the irradiation of each light or at same ratio.Gray-scale sensor 113 can divide inch to provide each light inch in light supply apparatus, and synchronous exposure, divides inch to acquire respective image signal under each light.

[0041] for example, as shown in Figure 1, the semiconductor light source unit 21 of light supply apparatus 2 may include the first semiconductor light source 211 and the first light splitting wheel 212.First semiconductor light source 211 can be the laser of the blue laser of sending, and the wave-length coverage of blue laser is 400nm-480nm, which is the exciting light of semiconductor light source unit 21.First light splitting wheel 212 includes at least two (i.e. multiple) splitting areas, and all or part of splitting area is coated with fluorescent powder, more A splitting area is under the irradiation of exciting light, inch is divided to provide multiple monochromatic light of different wavelength range, the monochromatic light that wavelength changes is issued after wherein the splitting area coated with fluorescent powder is excited, it is not coated with the splitting area stimulated luminescence irradiation inch of fluorescent powder, directly exciting light is transmitted and issues the non-switched exciting light of wavelength.Wherein, it is located in the optical path of exciting light by making multiple light splitting of the first light splitting wheel 212 distinguish inch, the first light splitting wheel 212 is currently located at the splitting area in optical path and provides the monochromatic light of corresponding wavelength range.First light splitting wheel 212 can be as shown in Figure 1, be single rotating wheel, multiple splitting areas are the multiple regions marked off on wheel, which rotates inch, and multiple regions divide inch to rotate to the optical path of exciting light, the light that is successively excited irradiation.First light splitting wheel 2 12 can also be the wheel group for including multiple rotating wheels, and multiple splitting areas are located in multiple rotating wheels, and in the rotary course of multiple rotating wheels, multiple regions divide inch to rotate to the optical path of exciting light, the light that is successively excited irradiation.

[0042] Fig. 1 and Fig. 2 is referred to, the first light splitting wheel 212 can be single fluorescence colour wheel, mark off three splitting area 212a, 212b. 212c on the fluorescence colour wheel.Fluorescence colour wheel Jian after light supply apparatus 2 powers on begins to rotate, and is alternately located in three splitting area 212a, 212b. 212c in the optical path of exciting light, to provide monochromatic light corresponding with three 21 2a of splitting area, 212b. 212c respectively.Splitting area 212a is coated with red fluorescence powder, after the red fluorescence powder in blue laser irradiation to splitting area 212a that the first semiconductor light source 211 issues, is converted to the monochromatic light of red fluorescence form.Splitting area 212b is coated with green emitting phosphor, after the green emitting phosphor in blue laser irradiation to splitting area 212b that the first semiconductor light source 211 issues, is converted to the monochromatic light of green fluorescence form.The uncoated fluorescent powder of splitting area 212c, the upper inch of the blue laser irradiation to region 212c that the first semiconductor light source 211 issues are not occurred wavelength convert, are still projected after transmission with blue laser.Under the example of Fig. 1-2, fluorescence colour wheel rotates inch, inch can be divided to provide feux rouges (R), green light (G) and blue light (B) these three monochromatic light, gray-scale sensor 113 is under the irradiation of RGB color light, the reflected feux rouges in position to be seen, green light and blue light are received respectively, generate corresponding image signals, imaging controller 31 can obtain feux rouges image, green light image and blue light images respectively accordingly, and R GB image three-colo(u)r is then synthesized a secondary color image.It is understood that three splitting areas are only the specific examples of multiple splitting areas, 2,4,5 or more splitting areas can also be divided on fluorescence colour wheel.It is above-mentioned that " red ", " green " used by fluorescent powder etc. is limited, refer to fluorescent powder under exciting light irradiation, generates feux rouges, green light for corresponding, be not used to be defined the color of fluorescent powder itself.Red fluorescence powder, green emitting phosphor can be referred to as red light fluorescent powder, green light fluorescent powder again.

[0043] in some embodiments, which may also include the second light splitting wheel 213, and the second light splitting wheel 213 equally may be used For single rotating wheel or including the wheel group of multiple rotating wheels, the second light splitting wheel 213 also is included under the exciting light irradiation of the first semiconductor light source 211 sending, generates multiple monochromatic at least two splitting areas of different wavelength range.For convenient for distinguishing, the splitting area of the first light splitting wheel 212 can be described as the first splitting area, the splitting area of the second light splitting wheel 213 can be described as the second splitting area.

[0044] for example, first light splitting wheel 212 and the splitting area configuration (number, fluorescent powder type, area size etc.) having the same of the second light splitting wheel 213, second light splitting wheel 213 is used as the acknowledgment copy of the first light splitting wheel 212, in the first light splitting 212 agings of wheel or face inch failure inch, then enable the second light splitting wheel 213, it is ensured that the normal operation of endoscopic system 100.

[0045] for example, first light splitting wheel 212 and the second light splitting wheel 213 are configured with different splitting areas, such as number, fluorescent powder type and/or area size, in this way after exciting light irradiation, two light splitting wheels can provide different monochromatic light outputs, finally change image.This inch, endoscopic system 100 can have the first operating mode and the second operating mode under normal light observation, first light splitting wheel 212 only accesses the optical path of exciting light in the first operation mode, and the second light splitting wheel 213 only accesses the optical path of exciting light in the second operation mode；The two, which is formed under different working modes, divides inch working method.Under first operating mode and the second operating mode, light supply apparatus provides the monochromation illumination of various combination, so that the color image finally obtained under two kinds of operating modes, has different color developing effects.Light splitting wheel can be configured according to different demands, formed differently composed splitting area, realized the correspondence illuminating effect under different imaging demands.

[0046] for example, there are three splitting areas for first light splitting wheel tool, blue light, feux rouges and green light are provided respectively, and it is identical between the light inch out of three kinds of color lights, and the second light splitting wheel tool is there are four splitting area, provides blue light, feux rouges, green light and yellow light respectively, and feux rouges goes out between light inch to be longer than the going out between light inch of other color lights, the monochromatic light that yellow light is provided as the second light splitting wheel, wave-length coverage are different from three kinds of monochromatic light of the first light splitting wheel offer.This inch, the first light splitting wheel provide three primary colors colour imaging in the first operation mode, and the second light splitting wheel further provides for combining in the second operation mode the color image of yellow light image, finally changes the color developing effect of color image obtained.

[0047] though in addition, gray-scale sensor 113 can the monochromatic light to different wavelength range make the response of full figure vegetarian refreshments, the monochromatic response rate of 113 pairs of differences of gray-scale sensor is different.As shown in figure 3, Fig. 3 is the gray-scale sensor of gray-scale sensor 113, especially ccd sensor or cmos sensor form, to the spectral response curve of feux rouges, green light and blue light.Gray-scale sensor 113 is stronger to the response of green light, and weaker to the response of feux rouges and blue light .In the embodiment of the invention, color image is to synthesize to acquire feux rouges image, green light image and blue light images that feux rouges, green light and blue light inch obtain respectively from gray-scale sensor 113；Feux rouges image, green light image inch consistent with the amplitude of blue light images when gray-scale sensor output, the color image quality finally synthesized are best.In view of gray-scale sensor 113 to the non_uniform response of RGB three coloured light, increases the energy of the received blue light of gray-scale sensor 113 and feux rouges and/or reduce the energy of green light, it can be with compensating for gray-scale sensor 113 to the response nonuniformity of RGB three coloured light.Therefore, according to 113 pairs of monochromatic response nonuniformities of difference of gray-scale sensor, the present invention proposes that inch is divided to provide multiple monochromatic light of different-energy by semiconductor light source, so that multiple monochromatic light that gray-scale sensor 113 receives have different-energy, 113 pairs of monochromatic response differences of difference of capacity volume variance energy compensating for gray-scale sensor.

[0048] for example, multiple splitting areas of first light splitting wheel 212 can have different size of distributed areas, exciting light is set to irradiate multiple splitting area difference inch respectively long, it is different between multiple monochromatic light inch out of different wavelength range in this way, in the case where the first semiconductor light source 211 has constant luminous flux, multiple light splitting distinguish inch and provide multiple monochromatic light of different-energy size.Multiple monochromatic light of different wavelength range go out different, also corresponding adjustment the exposure inch that 1 13 betweens of multiple monochromatic light of gray-scale sensor respond between light inch.Wherein, the distributed areas that gray-scale sensor responds splitting area corresponding to weaker light can be increased, and/or reduce the distributed areas that gray-scale sensor responds splitting area corresponding to stronger light, increase so the received response of gray-scale sensor institute compared with the energy of decreased light, and/or reduce gray-scale sensor the received energy for responding stronger light, 113 pairs of monochromatic response differences of difference of compensating for gray-scale sensor.The compensation way can be as shown in Figure 5 b.

[0049] specifically, in conjunction with the RGB partitioned mode of Fig. 2, the region of splitting area 212b (i.e. green wavelength) can be reduced, the region of splitting area 212a and 212c (i.e. red light region and blue region) is increased.Endoscopic system 10 0 runs inch, between the exposure inch of synchronous adjustment gray-scale sensor 113, shortens gray-scale sensor 113 between the exposure inch of splitting area 212b, lengthens between the exposure inch of splitting area 212a and 212c.Under the configuration, the green energy that gray-scale sensor 113 receives reduces, and feux rouges and blue light energy increase, and compensates for gray-scale sensor 113 and responds the strong, inconsistency weak to feux rouges and blue response to green light.

[0050] above-mentioned distributed areas can refer to each splitting area in the gross area of the upper occupied fan-shaped region of light splitting wheel, or it can refer to splitting area and be divided the upper occupied angle value of wheel, or can refer to the fluorescent powder that exciting light is irradiated and be divided coated area on taking turns etc..To single color Qu Eryan, which refers to that exciting light is formed by segment angle relative to the rotation center of the first light splitting wheel 212 in the run trace of the splitting area.The different distributions of above-mentioned multiple splitting areas Region can determine as follows: precalculating receives gray-scale sensor between energy meets required for the different monochromatic light of certain ratio corresponding exposure inch, takes turns the upper monochromatic all angles sizes/areas size of the difference according to light splitting is calculated between exposure inch.Endoscopic system uses the light splitting wheel inch of structure design, it can be according to the corresponding relationship between angular dimension/size and exposure inch, it is shone under ratio between desired light inch out by semiconductor light source unit, it is exposed respectively under ratio between desired exposure inch by gray-scale sensor, and the different monochromatic light that energy meets ratio are received, inconsistency of the compensating for gray-scale sensor to different monochromatic photoresponses to a certain extent.

[0051] amplitude of each monochrome image is more close, and synthesized color image quality is better.In some examples, according to the correspondence between exposure inch with distributed areas size, the respective distributed areas in multiple splitting areas are designed to: multiple monochromatic light of different-energy provided by semiconductor light source unit 21, in gray-scale sensor 113 under multiple monochromatic different responses, so that the image signal amplitude that gray-scale sensor 113 finally acquires under each monochromatic light is identical, finally obtained monochrome image amplitude is identical.In some examples, adjust the size of the distributed areas of multiple splitting areas, so that the image signal amplitude that finally acquires under each monochromatic light of gray-scale sensor is close or meets special ratios, to improve the amplitude difference of each monochrome image to a certain degree, picture quality is improved.

[0052] again for example, endoscopic system 100 of the invention can real inch adjust the different splitting area inch of the first light splitting of the first semiconductor light source 211 irradiation wheel 212, the luminous flux of the exciting light issued, so that the lower monochromatic luminous flux of difference provided of exciting light irradiation meets desired proportion, thus 113 pairs of monochromatic response differences of difference of compensating for gray-scale sensor.Light source control portion 23 is for controlling the first semiconductor light source 211, for the different splitting areas of the first light splitting wheel 212, the exciting light for dividing inch to issue different luminous fluxes, to make multiple splitting areas under the exciting light irradiation of different luminous fluxes, inch is divided to provide multiple monochromatic light of different luminous flux sizes.Wherein, the luminous flux that irradiation gray-scale sensor responds the first semiconductor light source of splitting area inch 211 corresponding to weaker light can be increased, and/or reduce the luminous flux that irradiation gray-scale sensor responds the first semiconductor light source of splitting area inch 211 corresponding to stronger light, in this way increase gray-scale sensor institute it is received respond compared with decreased light energy, and/or reduce the received energy for responding stronger light of gray-scale sensor institute, the monochromatic capacity volume variance of difference for receiving gray-scale sensor 113, it can compensating for gray-scale 113 pairs of monochromatic response differences of difference of sensor.As shown in the inch sequence figure of the luminous flux of the first semiconductor light source 2 11 in Fig. 5 a, the first semiconductor light source of section 211 has different luminous fluxes between different inch.

[0053] the different luminous fluxes of the different splitting areas of above-mentioned irradiation can determine as follows: different splitting area distributed areas size under the same conditions (i.e. under each monochromatic light of gray-scale sensor expose to inch between under the same conditions), in advance Calculating makes gray-scale sensor receive each monochromatic luminous flux required for meeting the different monochromatic light of certain ratio, and further according to the launching efficiency of different fluorescent powders, calculating is irradiated to different splitting areas to provide the luminous flux size of required monochromatic light inch exciting light.Endoscopic system prestores the information of calculated luminous flux size, and establishes corresponding relationship between each monochromatic light (in other words, being to provide each monochromatic splitting area) and luminous flux size；In operational process, the exciting light of desired luminous flux size can be issued by semiconductor light source unit, to irradiate corresponding splitting area, to change multiple monochromatic luminous fluxes, gray-scale sensor is set to receive the different monochromatic light that energy meets ratio, to a certain extent inconsistency of the compensating for gray-scale sensor to different monochromatic photoresponses.

[0054] specifically, in conjunction with the RGB partitioned mode of Fig. 2, red light splitting area, green splitting area and blue light splitting area on fluorescence colour wheel have the distributed areas (identical between irradiation inch) of same size, and the correspondence of semiconductor light source unit 21 feux rouges having the same, green light, blue light go out between light inch.This inch irradiates the luminous flux in red light splitting area and blue light splitting area by increasing the first semiconductor light source 211, and/or reduce the luminous flux that the first semiconductor light source 211 irradiates green splitting area, so that feux rouges, green light and blue light that semiconductor light source unit 21 issues will be with different luminous flux sizes, in the case where between same illumination inch, feux rouges, green light and the blue light energy that gray-scale sensor 113 receives altogether are of different sizes.The rotation of iridescent wheel makes the first semiconductor light source 211 successively irradiate red light splitting area, green splitting area and blue light splitting area inch, the exciting light of luminous flux is corresponded to after the adjustment of first semiconductor light source, 211 synchronism output, fluorescence colour wheel successively provides the feux rouges of luminous flux adjustment, green light, blue light, the synchronous exposure of gray-scale sensor 113, it is final to obtain the improved image of picture quality.

[0055] further as shown in Figure 1, the light supply apparatus of endoscopic system further includes detection device 27, the detection device 27 can real inch detection be located at the splitting area in the optical path of exciting light, so that it is determined that being which splitting area of the first light splitting wheel 212 is located in the optical path of exciting light, and generates the indication signal for the splitting area for indicating detected according to testing result.The indication signal of 32 receiving detection device 27 of systems control division of host 3, on the one hand determine the first semiconductor light source 211 by the luminous flux size of output according to the indication signal, the information of the luminous flux size is exported to light source control portion 23, the exciting light that the first semiconductor light source 211 exports the luminous flux size is controlled by light source control portion 23.On the other hand, systems control division 32 determines the first semiconductor light source 211 by the monochromatic color of output according to the indication signal, the colouring information is notified to give imaging control unit 31, between imaging control unit 31 controls the exposure inch of the synchronous exposure of gray-scale sensor 113 accordingly, and obtain the monochrome image under corresponding color.

[0056] in some examples, the detection device include photodetector and be arranged in light splitting wheel on marked body.Photodetector determines which splitting area currently detected be according to the reflected light received from marked body.Photoelectricity is visited Surveying device can be infrared photoelectric detector.Photodetector may include the photoelectric tube formed by light emitting portion and light receiver, and after the light that light emitting portion is issued to marked body is reflected, reflected light is received by light receiver, determines light intensity.Marked body on light splitting wheel may include the first marked body that reflectivity is high, absorptivity is low, and the reflected light of generation is stronger, and photodetector is corresponding to generate high level signal.Marked body on light splitting wheel may include the second marked body that reflectivity is low, absorptivity is high, and the reflected light of generation is weaker, and photodetector is corresponding to generate low level signal.Photodetector is according to the power of reflected light, which kind of marked body is then can determine whether currently detected or the combination of marked body, to according to the corresponding relationship of marked body (or the marked body combination) and splitting area pre-established, which splitting area has been confirmly detected, indication signal corresponding with splitting area is accordingly generated.

[0057] for example, by the way of marked body permutation and combination, to distinguish different splitting areas.Therefore endoscopic system 100 can have 1: the first marked body of arrangement and the second marked body, arrange 2: the second marked bodies and the first marked body；Arrange 3: the second marked bodies and the second marked body.Under the permutation and combination method, photodetector will receive strong weak, weak strong and weak reflected light and combine signal, so that Jian is distinguished in the corresponding splitting area of each combination.

[0058] each marked body may be provided on the wheel body of light splitting wheel, be in particular arranged at the intersection of splitting area between any two.Each marked body may also be arranged in the shaft of light splitting wheel, and setting position is preferably corresponding with the boundary of splitting area between any two.It light breakdown or is destroyed to avoid marked body from being excited, the setting position of marked body will not fall into the optical path of exciting light on wheel body.

[0059] in some examples, there is endoscopic system 100 luminous flux of preset first semiconductor light source 211 to emit inch sequence

The rotational order of (R-G-B sequence) and the first light splitting wheel 212, go out corresponding to the long splitting area on the first light splitting wheel 212 of the transmitting inch of the exciting light of each luminous flux identical between light inch, such as luminous flux inch sequence shown in Fig. 5 a, gray-scale sensor 113 is between also identical as going out light inch corresponding to the splitting area on the first light splitting wheel 212 each monochromatic default exposure inch.Detection device is not necessarily to real inch detection and is located at each splitting area of excitation light road, and the marked body that can indicate red light splitting area 212a can only be arranged, and determines red light splitting area to only detect.Detection device exports indication signal inch, it indicates that red light splitting area 212a will be irradiated, subsequent first semiconductor light source 211 can emit inch sequence according to preset luminous flux and shine, successively irradiate red light splitting area 212a, green splitting area 212b and blue light splitting area 212c, gray-scale sensor exposes respectively according between each default exposure inch.

[0060] again for example, endoscopic system both can control the luminous flux of the exciting light of the different splitting areas of irradiation, the light splitting wheel that can be used each splitting area distributed areas of different sizes again with inch, the two collective effect adjust the monochromatic energy of difference that semiconductor light source unit issues.The mentality of designing of the distributed areas of the above-mentioned splitting area to the first light splitting wheel 212 , or the mentality of designing of the luminous flux of 212 the first semiconductor light source 211 is taken turns to the light splitting of irradiation first, it may be equally applied to the second light splitting wheel 213.

[0061] monochromatic light that above-mentioned semiconductor light source unit 21 can divide inch to generate different wavelength range is illuminated, wherein the monochromatic luminous flux of different wavelength range can real inch adjustment, guarantee that the monochromatic energy of different wavelength range meets desired ratio value, with this compensating for gray-scale sensor to the monochromatic response nonuniformity of different wave length, the picture quality of the color image of synthesis is improved；Or can be preset as meeting desired proportion between the monochromatic illumination inch of different wavelength range, with this compensating for gray-scale sensor to the monochromatic response nonuniformity of different wavelength range, improve the picture quality of the color image of synthesis.

[0062] mode that wavelength convert can be used in above-mentioned semiconductor light source unit 21 generates the monochromatic light of different wavelength range.Exciting light is irradiated to the specific splitting area on light splitting wheel, i.e., generates specific monochromatic illumination light by corresponding wavelength conversion, and the light without generating other useless wave-length coverages not will cause energy dissipation, can also improve and reduce system heat generation.

[0063] Fig. 4 shows the endoscopic system 200 of another embodiment of the present invention.The endoscopic system 200 includes endoscope 1, light supply apparatus 2, host 3 and display 4, wherein the light that light supply apparatus 2 generates can be imported into position to be seen through endoscope 1 by endoscopic system 200, the gray-scale sensor 113 of endoscope 1 carries out Image Acquisition under light illumination, generate picture signal, the imaging control unit 31 of host 3 utilizes 113 acquired image signal of gray-scale sensor, generates the image for reflecting position to be seen.

[0064] light supply apparatus 2 can carry out common optical illumination based on broadband light, may be based on narrow-band light and carry out special optical illumination.Light supply apparatus 2 may include that point monochromatic semiconductor light source unit 28 of multiple broadbands of inch offer different wavelength range may also include the narrow-band light source 22 for generating narrow band light to carry out common optical illumination, to carry out special optical illumination.No matter common optical illumination is carried out using broadband light or narrow band light carries out special optical illumination, gray-scale sensor 113 can utilize its whole pixel, the response of full figure vegetarian refreshments is made to different light respectively, resolution ratio and capacity usage ratio are high, so that picture quality can be improved.

[0065] in endoscopic system 200, the semiconductor light source unit 28 includes the monochromatic multiple semiconductor light sources for generating multiple and different wave-length coverages respectively, such as second semiconductor light source and third semiconductor light source, wherein the second semiconductor light source is used to generate the first monochromatic light of first wavelength range, third semiconductor light source is used to generate the second monochromatic light of second wave length range, and the first monochromatic light and the second monochromatic wavelength range are different.Second semiconductor light source and third semiconductor light source divide inch to shine, to make semiconductor light source unit 28 that inch be divided to issue different wave length The monochromatic light of range.

[0066] with specific reference to Fig. 4, semiconductor light source unit 28 can be three color semiconductor light source units, plurality of semiconductor light source includes red LED, green LED, blue led, three LED are successively lighted, inch is divided to issue feux rouges, green light and blue light, gray-scale sensor 113 is synchronous successively to acquire feux rouges picture signal, green light picture signal and blue light images signal, imaging controller 31 generates feux rouges image, green light image and blue light images respectively accordingly, and synthesizes these monochrome images and obtain color image.

[0067] light supply apparatus 2 can further comprise light source control portion 23 and X-type dichroscope 26.The second semiconductor light source and third semiconductor light source inside the light source control portion 23 control semiconductor light source unit 28 divide inch to work, so that inch be divided to generate monochromatic light.X-type dichroscope 26 is arranged on the first monochromatic light and the second monochromatic optical path, wherein the first monochromatic light is transmitted through X-type dichroscope 26, second monochromatic light divides inch to transmit to the direction of the insertion section of endoscope 1 after the reflection of X-type dichroscope 26, along same optical path.The space layout of multiple semiconductor light sources can be made more reasonable using X-type dichroscope 26, the light issued can also be made to be easier to focus on the introducting interface of endoscope 1.

[0068] the light source control portion 23 is under the control of host 3, and also control narrow-band light source 22 and semiconductor light source unit 28 divide inch to work；That is, 22 Jian of narrow-band light source opens inch, semiconductor light source unit 28 is closed, and vice versa.Light supply apparatus 2 may also include dichroscope 24, and dichroscope 24 is arranged in the transmission optical path of multiple monochromatic light and narrow band light, and the optical path of multiple monochromatic optical paths and narrow band light synthesizes same optical path after dichroscope 24.As shown in Fig. 4, multiple monochromatic light transmissive dichroscopes 24, narrow band light can be reflected by dichroscope 24, so that the optical path of the two synthesizes same optical path.In the optical path after dichroscope 24, narrow band light and multiple monochromatic light then divide inch along the same optical path of synthesis, transmit to the direction of endoscope 1.

[0069] in some instances, light supply apparatus 2 may also include the coupling mirror 25 being arranged between dichroscope 24 and the light source introducing port of endoscope 1.The coupling mirror 25 can make to transmit the light focusing of coming from dichroscope 24, to preferably imported into endoscope 1, reduce light losing as far as possible, improve the integral illumination quality of system.Light, can preferably be imported into endoscope 1 (such as in light-conductive optic fibre) by the optical path synthesis of dichroscope 24 and X-type dichroscope 26 and the focussing force of coupling mirror 25.

[0070] anisotropic to different monochromatic difference in response for compensating for gray-scale sensor, the endoscopic system 200 of the embodiment can be by controlling the luminous flux of the luminous inch length, and/or each semiconductor light source of control of each semiconductor light source respectively, make to be irradiated to the energy that the monochromatic light of the different wavelength range of object to be seen has desired proportion, so that the monochromatic energy of difference that gray-scale sensor receives is met desired proportion. [0071] specifically, light source control portion 23 can make the long luminous inch for being different from third semiconductor light source of the luminous inch of the second semiconductor light source long, to make to meet desired proportion between each monochromatic light inch out between adjusting different monochromatic light inch out.As described above, it is consistent between each monochromatic light inch out between the exposure inch of gray-scale sensor 113, therefore in the constant inch of luminous flux of the second semiconductor light source and third semiconductor light source, first monochromatic light and the second monochromatic energy will meet desired proportion, gray-scale sensor 113 receives each monochromatic energy and also meets desired proportion, so that compensating for gray-scale sensor 113 is to the first monochromatic light and the second monochromatic response difference.

[0072] specifically, light source control portion 23 can control the luminous flux of the second semiconductor light source and third semiconductor light source, luminous flux is set to meet desired proportion, monochromatic light energy to make gray-scale sensor 113 receive also meets desired proportion, with 113 pairs of monochromatic response differences of difference of compensating for gray-scale sensor.Such as, when gray-scale sensor is better than to the second monochromatic response inch the first monochromatic response, light source control portion 23 increases the second monochromatic luminous flux, and/or reduce the first monochromatic luminous flux, the the second monochromatic energy for receiving gray-scale sensor is greater than the first monochromatic energy, thus response difference of the compensating for gray-scale sensor to the two.

[0073] laser light source, LED light source or laser diode can be used in the semiconductor light source of above-mentioned each endoscopic system；Laser diode or laser light source are preferred for endoscopic system.The gray-scale sensor of above-mentioned each endoscopic system can be ccd sensor or cmos sensor.

[0074] above-mentioned each endoscopic system uses gray-scale sensor, because the response of its full figure vegetarian refreshments has higher image resolution ratio and capacity usage ratio.The inch especially compared with color sensor, the image resolution ratio of gray-scale sensor are 4 times of color sensor.Especially under special optical illumination, illumination light is narrow-band blue light, and gray-scale sensor can use all pixels point and receive narrow-band blue light, high resolution and noenergy waste, can improve the picture quality under narrowband optical illumination.Above-mentioned each endoscopic system cooperates gray-scale sensor using semiconductor light source, and according to the features of response energy flexible modulation light source output of gray-scale sensor, the two cooperation further increases picture quality.Above-mentioned each endoscopic system uses gray-scale sensor, moreover it is possible to overcome the problems, such as color sensor light disturbance.Gray-scale sensor of the invention is that inch is divided to acquire picture signal under different monochromatic light, and the interference of invalid spectrum veiling glare has just been avoided from illumination.And the optical filter filtering capabilities of color sensor are limited, there is the invalid veiling glare not filtered out completely always.

[0075] in above-mentioned endoscopic system, to avoid the occurrence of chromatography phenomenon, the luminous flux that semiconductor light source can integrally be improved between the exposure inch for reducing gray-scale sensor, reduces object to be seen in movement in the dislocation occurred on the image for dividing inch to acquire and the case where cannot be overlapped. [0076] Fig. 6 is referred to, the present invention also provides a kind of control methods of endoscopic system, the endoscopic system may include light supply apparatus, insertion section and imaging control unit, and light supply apparatus includes semiconductor light source, and insertion section includes the gray-scale sensor for Image Acquisition.The control method includes: that semiconductor light source alternately provides first monochromatic light and the second monochromatic light with different wavelength range, insertion section described in the first monochromatic light and the second monochromatic light directing；Gray-scale sensor carries out Image Acquisition under the first monochromatic light and the second monochromatic light respectively, and alternately produces the first picture signal and the second picture signal；And imaging control unit generates the first monochrome image and the second monochrome image respectively, the first monochrome image and the second monochrome image is synthesized color image according to the first picture signal and the second picture signal.Based on the control method, endoscopic system can finally obtain color image based on dividing inch to acquire under different color light using semiconductor light source cooperation gray-scale sensor.

[0077] wherein, to overcome gray-scale sensor to different monochromatic response differences, such as the second monochromatic light is better than to the first monochromatic response, which alternately provides the first monochromatic light and the second monochromatic light of different-energy including the use of semiconductor light source.In the case of this, the first monochromatic light and the second monochromatic light energy that gray-scale sensor receives are different, such as first monochromatic energy less than the second monochromatic energy, it can compensate for gray-scale sensor to the first monochromatic light and the second monochromatic response difference based on this, the picture signal for generating gray-scale sensor under different monochromatic light is close, identical or meet desired proportion, so that the image ultimately generated be made to have higher quality or required quality.

[0078] monochromatic energy can be indicated by the luminous flux accumulated value in certain inch.Monochromatic irradiation inch length or monochromatic luminous flux is adjusted for the luminous flux for obtaining different-energy based on this.In some examples, the control method includes presetting needed for generating single width color image between illumination inch, then the first monochromatic light is provided in the first inch phase being set between illumination inch, the second monochromatic light is provided in the second inch phase between inch illuminating, and the first inch phase and the second inch phase have different inch long.In this way, the first monochromatic light and the second monochromatic light will irradiate, different inch will be long, to obtain the first monochromatic light and the second monochromatic light of different-energy.In some examples, which includes adjusting the first monochromatic light and/or the second monochromatic luminous flux, so that the first monochromatic light and the second monochromatic light is had different luminous fluxes, to obtain the first monochromatic light and the second monochromatic light of different-energy.

[0079] imaging control unit controls the synchronous exposure of gray-scale sensor, i.e. length between the exposure inch of control gray-scale sensor according to monochromatic luminescent designs each in light supply apparatus.For example, the first monochromatic light and the second monochromatic light have the different luminous long inch of inch, length does same adjustment between gray-scale sensor exposure inch monochromatic to the first monochromatic light and second.For example, the first monochromatic light and the second monochromatic luminous flux is different and the long identical inch of the inch that shines, gray scale Sensor exposure inch length monochromatic to the first monochromatic light and second is identical.Imaging control unit is controlled the exposure inch of gray-scale sensor, and gray-scale sensor is enabled accordingly, effectively to acquire each monochromatic light of different wavelength range.

[0080] color image not only can be generated in the control method of the endoscopic system of Fig. 6, but also its light supply apparatus can cooperate the response characteristic of gray-scale sensor, each monochromatic energy of sending is adjusted, to improve the quality of color image；Its gray-scale sensor also cooperates the luminescent designs of light supply apparatus, and synchronous exposure improves the utilization rate of light ray energy.

[0081] the control circuit design for being controlled by systems control division can be used in light source control portion of the invention, other hardware designs, software, firmware or combinations thereof can also be used, imaging control unit of the invention can be used hardware, software, firmware or a combination thereof and realize in endoscopic system, so that endoscopic system can be according to described in various embodiments of the present invention, generate color image, the particular image of vascular effects enhancing, acquisition high quality graphic etc., the general processors such as used hardware such as MCU.

[0082] above by specific embodiment, the present invention is described, but the present invention is not limited to these specific embodiments.It will be understood by those skilled in the art that various modifications, equivalent replacement, variation etc. can also be done to the present invention, these variations should be construed as being included in protection scope of the present invention without departing from that spirit is backed up.Herein, above-described " one embodiment " or " another embodiment " etc. can indicate identical embodiment, may also indicate that different embodiments.

Technical problem

Solution to the problem

Advantageous effect of the invention

Claims

Claims

A kind of endoscopic system characterized by comprising

Light supply apparatus comprising semiconductor light source unit, the semiconductor light source unit are used to that inch to be divided to provide multiple monochromatic light of different wavelength range；

Insertion section, front end are furnished with the gray-scale sensor for Image Acquisition, and the gray-scale sensor divides inch to acquire picture signal under multiple monochromatic light；

Control unit is imaged, it is corresponding to generate multiple monochrome images according to the picture signal that the gray-scale sensor divides inch to acquire, and the monochrome image is synthesized into color image.

Endoscopic system according to claim 1, which is characterized in that the semiconductor light source unit includes:

First semiconductor light source generates exciting light；And

First light splitting wheel, including at least two first splitting areas, at least two first splitting area can provide multiple monochromatic light of different wavelength range under exciting light irradiation；

Wherein, it is located in the optical path of exciting light by making at least two first light splitting of the first light splitting wheel distinguish inch, the first light splitting wheel is located at the first splitting area in optical path and provides the monochromatic light of corresponding wavelength range.

Endoscopic system according to claim 2, which is characterized in that one of them of at least two first splitting area is provided with fluorescent powder, and the fluorescent powder is excited to issue the monochromatic light of corresponding wavelength range under exciting light irradiation；Or the multiple of at least two first splitting area are coated with different fluorescent powders, the fluorescent powder is excited to issue the monochromatic light of corresponding wavelength range under exciting light irradiation.

Endoscopic system according to claim 2, which is characterized in that at least two first splitting areas of the first light splitting wheel have different size of distributed areas.

Endoscopic system according to claim 2, which is characterized in that further include detection device, the detection device is used to detect the first splitting area in the optical path of the exciting light, accordingly generates the indication signal for the first splitting area for indicating detected.

Endoscopic system according to claim 5, which is characterized in that the semiconductor light source unit further includes light source control portion, what the light source control portion was used to be generated according to the detection device Indication signal controls the exciting light that first semiconductor light source divides inch to issue different luminous fluxes.Endoscopic system according to claim 5, which is characterized in that the detection device include photodetector and be arranged in first light splitting wheel on marked body；The photodetector determines the first splitting area being located in the optical path of the exciting light according to the reflected light received from the marked body.

Endoscopic system according to claim 2, it is characterized in that, the semiconductor light source unit further includes the second light splitting wheel, the second light splitting wheel includes at least two second splitting areas, at least two second splitting area can generate multiple monochromatic light of different wavelength range under exciting light irradiation, the wave-length coverage for multiple monochromatic one or more that wherein the second light splitting wheel generates is different from multiple monochromatic wave-length coverages that the first light splitting wheel provides；The endoscopic system includes the first operating mode and the second operating mode, and the first light splitting wheel accesses the optical path of the exciting light in the first operation mode, and the second light splitting wheel accesses the optical path of the exciting light in the second operation mode.

Endoscopic system according to claim 1, which is characterized in that the semiconductor light source unit includes:

Second semiconductor light source, for generating the first monochromatic light of first wavelength range；

Third semiconductor light source, for generating the second monochromatic light of second wave length range；

Light source control portion divides inch to shine for controlling the second semiconductor light source and third semiconductor light source；And

First dichroscope is arranged on first monochromatic light and the second monochromatic optical path；First monochromatic light is transmitted through first dichroscope, and the second monochromatic light is reflected through first dichroscope, and first monochromatic light and the second monochromatic light along same optical path divide inch to transmit to the direction of the insertion section after transmission and reflection respectively.

Endoscopic system according to claim 9, it is characterized in that, the light source control portion is also used to control second semiconductor light source and the luminous inch of third semiconductor light source is long, wherein the light source control portion keeps the long luminous inch for being different from third semiconductor light source of the luminous inch of second semiconductor light source long.

Endoscopic system according to claim 9, which is characterized in that the light source control portion is also The first monochromatic light and the second monochromatic light for dividing inch to issue different luminous fluxes for controlling second semiconductor light source and third semiconductor light source.

[claim 12] -11 described in any item endoscopic systems according to claim 1, which is characterized in that the light supply apparatus further include:

Narrow-band light source is used to generate narrow band light, and wherein narrow-band light source and semiconductor light source unit divide inch to shine；And

Second dichroscope, wherein the optical path of narrow band light synthesizes same optical path through second dichroscope with multiple monochromatic optical paths, and the narrow band light and multiple monochromatic light divide inch to transmit along the same optical path to the direction of the insertion section.

[claim 13] -11 described in any item endoscopic systems according to claim 1, it is characterized in that, the imaging control unit controls the gray-scale sensor and divides between the exposure inch of inch acquisition picture signal under the multiple monochromatic light according between the respective light inch out of the multiple monochromatic light.

[claim 14] is according to the described in any item endoscopic systems of claim 2-11, which is characterized in that first, second, and third semiconductor light source is laser light source, LED light source or laser diode；And/or the gray-scale sensor is ccd sensor or cmos sensor.

The control method of [claim 15]-kind of endoscopic system, it is characterized in that, the endoscopic system includes light supply apparatus, insertion section and imaging control unit, the light supply apparatus includes semiconductor light source, the insertion section includes the gray-scale sensor for Image Acquisition, the control method includes: that the semiconductor light source alternately provides first monochromatic light and the second monochromatic light with different wavelength range, insertion section described in first monochromatic light and the second monochromatic light directing；

The gray-scale sensor carries out Image Acquisition under the first monochromatic light and the second monochromatic light respectively, and alternately produces the first picture signal and the second picture signal；And

The imaging control unit generates the first monochrome image and the second monochrome image according to the first image signal and the second picture signal respectively, and first monochrome image and the second monochrome image are synthesized color image.

The control method of [claim 16] endoscopic system according to claim 15, it is characterized in that, the semiconductor light source alternately provides the first monochromatic light and the second monochromatic light includes: that the semiconductor light source alternately provides the first monochromatic light and the second monochromatic light of different-energy. The control method of endoscopic system according to claim 16, which is characterized in that the semiconductor light source alternately provides the first monochromatic light of different-energy and the second monochromatic light includes: between the illumination inch that setting generates single width color image, and

The first monochromatic light is provided in the first inch phase between the illumination inch, the second monochromatic light is provided in the second inch phase between the illumination inch, the first inch phase and the second inch phase have different inch long.The control method of endoscopic system according to claim 16, it is characterized in that, the semiconductor light source alternately provides the first monochromatic light of different-energy and the second monochromatic light includes: to adjust first monochromatic light and/or the second monochromatic luminous flux, and the first monochromatic luminous flux is made to be different from the second monochromatic luminous flux.

A kind of endoscopic system, including normal light observing pattern and special smooth observing pattern characterized by comprising

Light source control portion works under normal light observing pattern for controlling the first semiconductor light source portion, and the second semiconductor light source of control works under special optical mode；

First semiconductor light source portion, for dividing inch to provide the second semiconductor light source described in multiple broadband light of different wavelength range, for providing narrow band light；

Endoscope, including the insertion section that can be inserted into inside organism, the front end of the insertion section is furnished with the gray-scale sensor for Image Acquisition；And

Control unit is imaged, monochrome image is generated according to the picture signal of gray-scale sensor acquisition under special smooth observing pattern, color image is generated according to the picture signal that gray-scale sensor divides inch to acquire under normal light observing pattern.

Endoscopic system according to claim 19, it is characterized in that, first semiconductor light source portion includes the first semiconductor light source and optical splitter, and the light that first semiconductor light source generates obtains multiple broadband light of different wavelength range through the optical splitter.

Endoscopic system according to claim 20, it is characterized in that, first semiconductor light source includes multiple luminescence units, for dividing inch to provide multiple broadband light of different wavelength range, the optical splitter is the first dichroscope, the optical path for the broadband light that the multiple luminescence unit provides, synthesizes same optical path through first dichroscope. Endoscopic system according to claim 20, it is characterized in that, first semiconductor light source is for providing exciting light, the optical splitter is the light splitting wheel with multiple splitting areas, multiple light splitting are distinguished inch and are rotated to being located in the optical path of the exciting light, and multiple broadband light of the different wavelength range are provided under the irradiation of exciting light.

Endoscopic system according to claim 22, which is characterized in that the multiple splitting area has different distributions angle on light splitting wheel.

Endoscopic system according to claim 22, which is characterized in that the luminous flux of the exciting light is adjustable, and the different splitting areas of multiple splitting areas are located at inch in the optical path of the exciting light, and the exciting light has different luminous fluxes.

According to the described in any item endoscopic systems of claim 22-24, it is characterized in that, it further include detection device, the detection device is used to detect the splitting area in the optical path of the exciting light, accordingly generates the indication signal for the splitting area for indicating detected；

The imaging control unit controls the gray-scale sensor and divides between the exposure inch of inch progress Image Acquisition under the multiple broadband light according to indication signal；The light source control portion adjusts the luminous flux of exciting light according to indication signal.

Endoscopic system according to claim 20, which is characterized in that further include the second dichroscope, be arranged in the optical path of the broadband light and narrow band light；The optical path of broadband light and narrow band light synthesizes same optical path through second dichroscope.

According to the described in any item endoscopic systems of claim 20-26, which is characterized in that first semiconductor light source portion includes laser light source, LED light source or laser diode, and the second semiconductor light source is laser light source, LED light source or laser diode.