CN215687677U

CN215687677U - Imaging light source device and endoscope system

Info

Publication number: CN215687677U
Application number: CN202121810820.9U
Authority: CN
Inventors: 张凯君
Original assignee: Sonoscape Medical Corp
Current assignee: Sonoscape Medical Corp
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-02-01
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses an imaging light source device and an endoscope system, wherein the imaging light source device comprises: the laser light source and the white light source are used for providing illumination light for the mirror body; the shading device is rotatably arranged on the light path of the white light source and is alternately provided with shading parts and light transmission parts along the circumferential direction, and when the shading device rotates, the shading parts and the light transmission parts alternately move to the light path to periodically shade the light path; and the detection device is electrically connected with the processor and is used for detecting the alternating state of the light shielding part and the light transmitting part on the light path and transmitting the alternating state to the processor. The application provides an imaging light source device can provide the illumination of white light and laser to the mirror body to can detect and obtain the time that specifically provides the white light, so that the treater carries out the typing to the image of acquireing and handles, simple structure and convenient operation.

Description

Imaging light source device and endoscope system

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an imaging light source device. Furthermore, the utility model also relates to an endoscope system comprising the imaging light source device.

Background

In medical diagnostic examinations, devices such as endoscopes are often used as means and instruments for in vivo detection, and in order to detect a change in an in vivo structure more favorably, an autofluorescence imaging (AFI) technique is used.

The principle of autofluorescence imaging is that excitation light with 405nm excites elastin in submucosa to emit auto-fluorescence with 490-625 nm. The upper mucous membrane of the normal tissue is thin, abnormal congestion does not exist, and the fluorescence intensity is maximum; when the tissue is diseased, congestion and mucosal thickening phenomena can occur, fluorescence can be absorbed by the thickened mucosa or small blood vessels, and the detected fluorescence intensity can be reduced; the green reflected light can be put into R and B channels, the autofluorescence is put into G channel, and after the fluorescence image is synthesized, the tissue can be judged whether to have pathological changes according to the color information of the fluorescence image.

In the apparatus using autofluorescence imaging technology provided in the prior art, shutters are usually provided for a white light source and a laser light source respectively, and the two shutters are controlled by a circuit to alternately act, so that the alternate output of the two lights is realized.

In the prior art, filters with different filter wavelength bands (such as red, green and blue) are arranged in a white light path, and the filters alternately enter the light path, so that a subject is sequentially irradiated by different illumination lights, and different irradiation signals (such as red, green and blue) are synthesized into a color image by utilizing the processing of a back-end circuit; processing is performed on the fluorescence imaging signal to extract an imaging signal generated by the blue illumination light illumination, so that a fluorescence image of the object generated by the excitation light contained in the blue illumination light is extracted; the color image and the fluorescence image of the shot object are synthesized, and the subsequent synthesis treatment in the method is complex and is inconvenient to popularize generally.

In summary, how to enable the endoscope to acquire the white light image and the fluorescence image and to output the normal white light image and the fluorescence image at the same time easily through a simple structure is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide an imaging light source device, which can provide laser light for a scope and provide periodic white light, facilitate time-division illumination of different illumination lights of a subject, so that an endoscope can simultaneously output a normal white light image and a fluorescence image, and has a simple structure and simple operation.

Another object of the present invention is to provide an endoscope system including the above-described imaging light source device.

In order to achieve the above purpose, the utility model provides the following technical scheme:

an imaging light source device comprising:

the laser light source and the white light source are used for providing illumination light for the mirror body;

the shading device is rotatably arranged on a light path of the white light source and is alternately provided with shading parts and light transmission parts along the circumferential direction, and when the shading device rotates, the shading parts and the light transmission parts alternately move to the light path to periodically shade the light path;

and the detection device is electrically connected with the processor and is used for detecting the alternating state of the light shielding part and the light transmitting part on the light path and sending the alternating state to the processor.

Preferably, the light shielding device comprises a light shielding rotary disc provided with a protruding part, and the detection device is a photoelectric sensor for detecting the protruding part;

when the convex part rotates to the position of the photoelectric sensor, the intersection line of the light shielding part and the light transmission part rotates to the light path, and the photoelectric sensor sends a signal to the processor.

Preferably, the convex portion is located at a boundary position between the light shielding portion and the light transmitting portion;

the detection device is arranged close to the white light source in the circumferential direction of the shading device, or the shading device is of a central symmetrical structure about a rotation central line of the shading device, and the detection device and the white light source are respectively arranged on two sides of the central line.

Preferably, the number of the light-shielding portions and the number of the light-transmitting portions are at least two.

Preferably, the protruding part is a bent edge of the light-shielding rotary disc.

Preferably, the light shielding portion and the light transmitting portion are both fan-shaped, and both have the same central angle with respect to the rotation center of the light shielding device.

Preferably, the light-transmitting part is a hollow groove or a hollow hole; or, the light-transmitting part is a light-transmitting lens.

Preferably, the middle part of the shading device is provided with a connecting shaft, the connecting shaft is connected with a motor through a coupler, and the motor is electrically connected with a controller for controlling the output of the motor.

An endoscope system comprising an imaging light source device, a scope body and a processor, wherein the processor is electrically connected with the imaging light source device and the scope body, the imaging light source device is the imaging light source device of any one of the above items, and the processor determines the type of the image acquired by the scope body according to the alternating signals of the light shielding part and the light transmitting part.

Preferably, the mirror body is provided with an excitation light cut filter for filtering reflected laser light when acquiring an image.

Preferably, the laser light source is connected to the insertion portion of the scope body through a first optical fiber;

and/or the white light source transmits white light to a second optical fiber through a lens, the second optical fiber is connected with the insertion part of the lens body, and the shading device is arranged between the lens and the second optical fiber.

In the imaging light source device, the shading device is provided with the shading parts and the light transmission parts in a circumferential direction alternately, the light transmission parts allow the white light to pass through, the shading parts shade the white light, and when the shading device rotates, the shading parts and the light transmission parts are alternately positioned in the light path, so that the mirror body periodically receives the white light.

The illumination light of the laser light source and the white light source is transmitted to the mirror body and is used for irradiating the shot object, the laser light source is in a normally bright state, and the white light source is subjected to periodical shading treatment by the shading device.

When the endoscope is used, the imaging light source device is connected with the corresponding endoscope body and the processor, the laser light source and the white light source are controlled to emit light, the shading device rotates, the detection device detects the alternative change of the shading part and the light transmission part and sends the alternative change to the processor so as to acquire the change of the type of the illumination light transmitted to the endoscope body within a period of time, and the endoscope body sends the acquired white light image and the acquired autofluorescence image to the processor, so that the type of the image acquired by the endoscope body within the period of time can be determined, and the processor can conveniently perform different processing according to the acquired image and the corresponding type of the image.

Since the mirror body is used for acquiring the image of the shot object irradiated by the light, the autofluorescence emitted after the laser is irradiated on the shot object is weak, and if the autofluorescence is superposed with the reflected white light, the mirror body captures the white light, so that when the shading device rotates, the mirror body periodically acquires the image of the reflected white light and the image of the autofluorescence.

The application provides an imaging light source device can provide the timesharing illumination of white light and laser to the mirror body to can detect and obtain the time that specifically provides white light, so that the treater carries out the typing to the image of acquireing and handles simple structure and convenient operation.

The application also provides an endoscope system which can have the same technical effect due to the fact that the endoscope system comprises the imaging light source device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of an imaging light source device according to the present invention;

FIG. 2 is a schematic structural diagram of a light-shielding turntable according to the present invention;

fig. 3 is a schematic view of an endoscopic system provided by the present invention.

In fig. 1 to 3, reference numerals include:

10 is an imaging light source device, 1 is a shading device, 2 is a motor, 3 is a coupler, 4 is a photoelectric sensor, 5 is a light guide optical fiber, 6 is a white light source, 7 is a laser light source, and 8 is a mirror body;

light shielding portion 11, light transmitting portion 12, and protrusion portion 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the utility model is to provide an imaging light source device, which can provide laser for a lens body and provide periodic white light, is convenient to realize time-sharing irradiation of different illumination lights of a shot object, so that an endoscope can simultaneously output a normal white light image and a fluorescence image, and has simple structure and simple and convenient operation. Another object of the present invention is to provide an endoscope system including the above-described imaging light source device.

Referring to fig. 1 to 3, fig. 1 is a schematic view of an imaging light source device according to the present invention; FIG. 2 is a schematic structural diagram of a light-shielding turntable according to the present invention; fig. 3 is a schematic view of an endoscopic system provided by the present invention.

The application provides an imaging light source device, is connected with mirror body 8 electricity during the use for provide the light source to mirror body 8, imaging light source device 10 mainly includes laser light source 7, white light source 6, shade 1 and detection device.

The laser light source 7 is used for emitting laser light to the mirror body 8, and the white light source 6 is used for emitting white light to the mirror body 8. The laser beam is irradiated to the subject through the scope 8, so that the subject emits autofluorescence, and the scope 8 can obtain an autofluorescence image. White light is irradiated to the subject through the mirror 8, and the subject reflects the white light, so that the mirror 8 obtains a white light image.

The shading device 1 is rotatably arranged and located on the light path of the white light source 6, the shading device 1 is alternately provided with the shading parts 11 and the light transmission parts 12 along the circumferential direction, and when the shading device 1 rotates, the shading parts 11 and the light transmission parts 12 sequentially move to the light path so as to realize the periodical shading of the light path.

The detection device is used for detecting the position relation between the light shielding part 11 and the light transmitting part 12 and the optical path, and is used for electrically connecting the processor. When the shading device 1 rotates, the detection device can detect the alternating state of the shading part 11 and the light transmission part 12 on the light path and send the alternating state to the processor, namely when the state of the light path shaded by the shading part 11 is converted into the light transmission state of the light transmission part 12, the detection device acquires an alternating signal; when the light path is changed to the state shielded by the light shielding portion 11 from the light transmitting state of the light transmitting portion 12, the detection device can also acquire the alternate signal, and the two alternate signals sent to the processor are mainly used for enabling the processor to acquire the current alternate state or the current transition state, so that the two alternate signals may be the same signal or have differences.

In the light shielding device 1, the light shielding portions 11 and the light transmitting portions 12 are alternately arranged in the circumferential direction, the light transmitting portions 12 allow the white light to pass therethrough, and the light shielding portions 11 shield the white light so that the white light cannot pass therethrough. Therefore, when the light shielding device 1 rotates, the light shielding portion 11 and the light transmitting portion 12 are alternately positioned in the optical path, so that the mirror body 8 periodically receives white light. The length of the period is determined by the circumferential width of each light shielding portion 11 and each light transmitting portion 12, and may be a fixed width, have a fixed period, or have different widths, that is, have different periods.

The illumination light of the laser light source 7 and the white light source 6 is transmitted to the mirror body 8 so as to be irradiated on the object to be shot, the laser light source 7 is in a normally-on state, and the white light source 6 is subjected to periodical shading treatment by the shading device.

When the imaging light source device 10 is used, the corresponding mirror body 8 and the processor are connected, the laser light source 7 and the white light source 6 are controlled to emit light, meanwhile, the shading device 1 rotates, the detection device detects the alternative change of the shading part 11 and the light transmission part 12 and sends the alternative change to the processor, so that the time period of the change and the change of the type of the illumination light transmitted to the mirror body 8 in a period of time is obtained, the mirror body 8 sends the obtained white light image and the autofluorescence image reflected by the shot body to the processor, therefore, the processor can determine the type of the image obtained by the mirror body 8 in the period of time and the corresponding time, and the processor can conveniently carry out different processing according to the obtained image and the corresponding type of the image.

Since the mirror 8 connected to the imaging light source device 10 is used to acquire an image of a subject, autofluorescence emitted after laser light is irradiated on the subject is weak, and if the autofluorescence is superimposed on reflected white light, the mirror 8 captures white light, and therefore, when the light blocking device 1 rotates, the mirror 8 periodically acquires an image of the reflected white light and an image of the autofluorescence. For example, the processor acquires an image within a period of time (0.5s), acquires a signal of the sensor, and obtains a period of white light irradiation, wherein the white light is irradiated to the subject during 0-0.1s, 0.2s-0.3s, and 0.4s-0.5s, so that the image during 0-0.1s, 0.2s-0.3s, and 0.4s-0.5s is a white light image, and the corresponding image during 0.1s-0.2s, and 0.3s-0.4s is an autofluorescence image, the processor splits the images and displays the images respectively through the imaging display, and two image areas are arranged on the imaging display, one is used for displaying the white light image area, and the other is used for displaying the autofluorescence image area. Considering that the rotation speed of the shading device 1 is fast, the frequency of alternately acquiring the white light image and the autofluorescence image is fast, so that the image of the white light image area can be regarded as a continuous image, the image of the autofluorescence image area can be regarded as a continuous image, and finally, the white light image and the autofluorescence image are output simultaneously on the imaging display.

The imaging light source device 10 provided by the application can provide time-sharing illumination of white light and laser to the mirror body 8, and can detect the time for obtaining the specific white light, so that a subsequent processor can perform classification processing on the obtained images, and the imaging light source device is simple in structure and convenient to operate.

In addition, considering that the rotation speed of the shade device 1 can be fast, neither the image reflecting white light nor the autofluorescence image exhibits a discontinuous effect.

On the basis of the above-described embodiment, the light shielding device 1 includes a light shielding rotary disk provided with the protruding portion 13, and the detecting device is the photoelectric sensor 4 for detecting the protruding portion 13. When the convex portion 13 rotates to the position of the photosensor 4, the intersection of the light shielding portion 11 and the light transmitting portion 12 rotates to the optical path, and the photosensor 4 sends a signal to the processor.

It should be noted that the light-shielding rotary disk may have a disk structure or other shapes, and may rotate around an axis thereof, and the protrusions 13 are sequentially disposed in the circumferential direction of the light-shielding rotary disk.

When the shading rotary disc rotates, the following two things are triggered simultaneously: firstly, the intersection line of the light shielding part 11 and the light transmission part 12 rotates to the light path, and the shielding state of the light path of the white light source 6 is changed; second, the photoelectric sensor 4 senses the protrusion 13, thereby sending a signal to the processor. In use, the situation that one event is triggered and the other event is not triggered does not occur, namely, the two events occur simultaneously, so that the position of the convex part 13 and the position arrangement of the photoelectric sensor 4 need to be matched with the light path position of the light source.

Optionally, the turntable structure may be specifically a fan-shaped or other shielding plate, a rotating shaft is disposed at an edge of the shielding plate, and the shielding plate uses its own length as a radius and rotates around the rotating shaft to shield the formed light path intermittently.

Optionally, the number of the shielding plates in the circumferential direction can be a plurality, the plurality of shielding plates synchronously rotate along the circumferential direction, and the plurality of shielding plates are similar to a fan blade structure and are structurally connected into a whole, so that the turntable is formed.

In addition to the above embodiments, the light shielding portion 11 and the light transmitting portion 12 are both fan-shaped structures, and both have the same central angle with respect to the rotation center of the light shielding device 1. The same central angle of the rotation center allows the light shielding portion 11 and the light transmitting portion 12 to be arranged uniformly in the circumferential direction.

The light shielding portion 11 and the light transmitting portion 12 may have other configurations, for example, a circular shape or a square shape.

Alternatively, the above-mentioned protrusion 13 may be disposed at the boundary position of the light shielding portion 11 and the light transmitting portion 12, and the photoelectric sensor 4 is disposed at a position corresponding to the white light source 6, for example, in a specific embodiment, the photoelectric sensor 4 is disposed close to the white light source 6 in the circumferential direction of the light shielding device 1, for example, disposed beside the white light source 6, and both are disposed along the radial direction of the light shielding turntable.

Alternatively, referring to fig. 2, the light shielding device 1 is a central symmetrical structure about its rotation center line, and because its center is symmetrical, it has regularity from the structure, so the detecting device and the white light source 6 can be respectively disposed at both sides of the center line, that is, as shown in fig. 1 and fig. 2, when the intersection line of the light shielding portion 11 and the light transmitting portion 12 rotates to the light path edge line, the convex portion 13 located at the central symmetrical position of the intersection line on the light shielding device 1 just forms the sensing of the photoelectric sensor 4.

Fig. 1 and 2 provide a scheme that the white light source 6 and the photoelectric sensor 4 are respectively arranged at two sides of the center of the shading turntable, so that the white light source and the photoelectric sensor are arranged separately and do not form interference.

Alternatively, the protruding portion 13 may be disposed at a non-intersecting position, and it should be noted that, at this time, the position where the photoelectric sensor 4 is disposed needs to be adjusted, that is, it is still ensured that the intersecting line of the light shielding portion 11 and the light transmitting portion 12 rotates to the light path, and the photoelectric sensor 4 senses the protruding portion 13, so as to send a signal to the processor, and these two events still ensure simultaneous triggering.

In any of the above embodiments, the number of the light-shielding portions 11 and the light-transmitting portions 12 is at least two.

It should be noted that, since the relative position of the center of the shade 1 and the white light source 6 is not changed, the white light source 6 will always illuminate or pass through the position of the fixed rotation radius on the shade 1 during the rotation of the shade 1. Therefore, it is necessary to ensure that the light shielding portion 11 and the light transmitting portion 12 are alternately arranged in the circumferential direction of the rotation radius, and since the light shielding portion 11 and the light transmitting portion 12 have opposite effects on the optical path, the number of the light shielding portion 11 and the light transmitting portion 12 must be equal and alternately arranged.

Alternatively, more than one light shielding portion 11 or light transmitting portion 12 may be provided in the radial direction of the light shielding device 1. For example, at a position where the radius of the light shielding device 1 is r, the central angle of the light shielding portion 11 and the light transmitting portion 12 is 30 degrees, and at a position where the radius of the light shielding device 1 is 2r, the central angle of the light shielding portion 11 and the light transmitting portion 12 is 90 degrees. By adjusting the radial distance of the white light source 6 relative to the rotation center of the light shielding device 1, the corresponding state of the light path and the light shielding part 11 or the light transmitting part 12 in different radial directions can be changed, and by this way, the alternation times of the light shielding part 11 and the light transmitting part 12 in one circle can be changed under the condition that the rotation speed of the light shielding device 1 is not changed, so that the frequency of the white light transmission is changed.

Optionally, the protrusion 13 is a bent edge of the light-shielding rotary disk. Referring to fig. 2, the bending edge is bent from the radial outside to the inside to form a shielding structure, and correspondingly, the light emitting direction of the photo sensor 4 is arranged along the radial direction of the light shielding turntable, so that the protruding portion can cause the sensing change of the photo sensor 4.

Alternatively, the sensor in the above structure may be other types of sensors.

In a specific embodiment, the light shielding portion 11 and the light transmitting portion 12 have different angles in the circumferential direction. For example, the light shielding portion 11 having a central angle of 120 degrees, the light transmitting portion 12 having a central angle of 60 degrees, the light shielding portion 11 having a central angle of 60 degrees, and the light transmitting portion 12 having a central angle of 120 degrees are provided in this order in the circumferential direction. With this arrangement, it is necessary to provide the convex portion 13 at each boundary between the light shielding portion 11 and the light transmitting portion 12, and to provide the photosensor 4 at a radial position adjacent to the white light source 6, that is, the convex portion 13 at the boundary where the photosensor 4 detects the light path.

In the case where the single light-shielding portion 11 and the single light-transmitting portion 12 are provided in the circumferential direction, the above-described case is also satisfied, and the protrusion 13 needs to be provided at each boundary between the light-shielding portion 11 and the light-transmitting portion 12.

In a specific embodiment, the light shielding portion 11 and the light transmitting portion 12 have the same angle in the circumferential direction. This arrangement is less demanding with respect to the arrangement of the protruding portion 13 and the photosensor 4, and may be located at an interface position or other positions. For example, referring to fig. 2, a light shielding portion 11 having a central angle of 90 degrees, a light transmitting portion 12 having a central angle of 90 degrees, a light shielding portion 11 having a central angle of 90 degrees, and a light transmitting portion 12 having a central angle of 90 degrees are provided in this order along the circumferential direction.

Therefore, it is preferable that the light shielding portion 11 and the light transmitting portion 12 have the same number of central angles and the same width in the circumferential direction, and both of them have an even number.

On the basis of any of the above embodiments, the light-transmitting portion 12 is a hollow groove or a hollow hole; alternatively, the light-transmitting portion 12 is a light-transmitting lens. The light-transmitting effect of the hollow grooves or the hollow holes is good, the cost is low, and the light-transmitting part 12 is not required to be replaced.

On the basis of any of the above embodiments, the middle part of the shading device 1 is provided with a connecting shaft, the connecting shaft is connected with the motor 2 through the coupler 3, and the motor 2 is electrically connected with a controller for controlling the output of the motor 2.

Alternatively, the motor 2 of the present application may be connected to the processor of the shading device 1.

Optionally, the controller may be a motor control circuit board.

The white light source 6 is connected with an LED dimming device, the LED dimming device is connected with a main control circuit board, and the main control circuit board is also connected with a power supply driving board, an air pump and a motor control circuit board; the laser light source 7 is connected with a laser current dimming device, and the laser current dimming device is connected with a laser power supply.

In addition to the main structure of the imaging light source device 10 and the connection relationship between the structures provided in the above embodiments, the present invention also provides an endoscope system including the above imaging light source device 10, the endoscope body 8, and a processor, the processor electrically connects the imaging light source device 10 and the endoscope body 8, the imaging light source device 10 is the imaging light source device 10 of any one of the above, and the processor determines the type of the image acquired by the endoscope body 8 according to the alternating signal of the light shielding portion 11 and the light transmitting portion 12.

The processor may be a processor provided outside the imaging light source device 10 and independent from the imaging light source device 10, or may be a processor inside the imaging light source device 10, that is, both the control signal and the image processing function of the processor are completed by the imaging light source device 10.

During one rotation of the light shielding device 1, autofluorescence emitted by the subject and reflected white reflected light alternate, and as an example, the two illumination lights alternate once every quarter cycle in the scheme provided in fig. 1 and 2.

When the shading turntable rotates anticlockwise and one side of the upper part of the bending edge a starts to shade a light path of white light, the bending edge c penetrates through the photoelectric sensor 4, the photoelectric sensor 4 sends a pulse signal to the processor, at the moment, the mirror body 8 starts to receive autofluorescence, and the processor can read an autofluorescence image according to the pulse signal. When the shading rotating disc rotates to the bent edge d and leaves the white light path, the bent edge b penetrates through the photoelectric sensor 4, the photoelectric sensor 4 sends a pulse signal, the mirror body starts to receive the white light, the autologous fluorescence image at the moment can be ignored due to the fact that the white light is strong, and the white light image is read out according to the pulse signal.

Therefore, during the rotation of the convex part 13 along with the shading turntable, the lens 8 can read the autofluorescence image from the a position to the d position and from the c position to the b position to block the light path, and during the period from the d position to the c position and from the b position to the a position, the lens 8 can read the white light image, and the processor can select to output through different channels.

In the rear-end image processing part of the processor, a green light image is extracted from a white light image according to an AFI imaging principle and is placed into an R channel and a B channel, autofluorescence is placed into the G channel, and the images of the G channel, the R channel and the B channel are synthesized into a fluorescence image, so that whether a lesion exists in a tissue can be judged according to color information of the fluorescence image. The white reflected light forms a white light image that can be displayed on a display in conjunction with the fluorescent image. Thus, two images, a white light image and a combined fluorescence image, can be displayed finally.

In the embodiment, the processor records the detection result of the detection device on the alternating state of the light shielding part 11 and the light transmitting part 12, is connected with the mirror body 8, acquires the white light image and the autofluorescence image reflected by the object through the mirror body 8, and can distinguish the two images by distinguishing the detection result of the alternating state of the light shielding part 11 and the light transmitting part 12 because the images are continuous.

In a specific embodiment, the processor splits the acquired alternating white light image and auto-fluorescence image, and displays them separately by the imaging display, and two image regions are set on the imaging display, one is for displaying the white light image region, and the other is for displaying the auto-fluorescence image region. Considering that the rotating speed of the shading device 1 is fast, the frequency of alternately acquiring the white light image and the autofluorescence image is fast, so that the image of the white light image area can be regarded as a continuous image, and the image of the autofluorescence image area can also be regarded as a continuous image, and finally, the white light image and the autofluorescence image are output simultaneously on the imaging display.

Since the laser beam is emitted to the subject and the subject emits autofluorescence through the protein and also directly reflects the laser beam, in order to reduce the influence of the laser beam reflection on image acquisition, the mirror body 8 is provided with an excitation light cut-off filter for filtering the reflected laser beam when acquiring the image. That is, when the mirror 8 receives the reflected white light or autofluorescence light, the reflected laser light is filtered out, and the laser image is not received.

In any of the above embodiments, the laser light source 7 is connected to the insertion portion of the mirror body 8 through the first optical fiber; and/or the white light source 6 transmits the white light to a second optical fiber through a lens, the second optical fiber is connected with the insertion part of the lens body 8, and the shading device 1 is arranged between the lens and the second optical fiber. Referring to fig. 1, a white light source 6 and a second optical fiber, i.e., a light guide optical fiber 5, are respectively disposed on two sides of a light shielding device 1. Through optical fiber transmission light, the light leak effect can be avoided appearing.

In the endoscope system, since the rotation of the light shielding device 1 can be controlled, the effect of image discontinuity does not occur in the synthesized color image, and the discontinuity does not need to be dealt with when the image is processed in the rear-end image processing section.

The method and the device have the advantages that the image acquisition frequency is high, the type of the image can be distinguished, and interference can not be caused, so that the situations of delay and frame break can not occur when the image is displayed on the terminal finally. For the structure of other parts of the imaging light source device, please refer to the prior art, which is not described herein again.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The imaging light source device and the endoscope system provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. An imaging light source device, comprising:

the laser light source (7) and the white light source (6) are used for providing illumination light for the mirror body (8);

the shading device (1) is rotatably arranged on a light path of the white light source (6), and is alternately provided with shading parts (11) and light transmission parts (12) along the circumferential direction, and when the shading device (1) rotates, the shading parts (11) and the light transmission parts (12) alternately move to the light path to periodically shade the light path;

and the detection device is electrically connected with a processor and is used for detecting the alternating state of the light shielding part (11) and the light transmitting part (12) on the light path and sending the alternating state to the processor.

2. Imaging light source device according to claim 1, characterized in that the shading device (1) comprises a shading turntable provided with a protrusion (13), the detection device being a photosensor (4) for detecting the protrusion (13);

when the convex part (13) rotates to the position of the photoelectric sensor (4), the intersection line of the light shielding part (11) and the light transmitting part (12) rotates to the light path, and the photoelectric sensor (4) sends a signal to the processor.

3. The imaging light source device according to claim 2, wherein the convex portion (13) is located at a boundary position of the light shielding portion (11) and the light transmitting portion (12);

the detection device is arranged close to the white light source (6) in the circumferential direction of the shading device (1), or the shading device (1) is of a central symmetrical structure about the rotation center line of the shading device, and the detection device and the white light source (6) are respectively arranged on two sides of the center line.

4. The imaging light source device according to claim 3, wherein the number of the light shielding portions (11) and the light transmitting portions (12) is at least two.

5. The imaging light source device according to claim 2, wherein the protrusion (13) is a bent edge of the light shielding dial.

6. The imaging light source device according to any one of claims 1 to 5, wherein the light shielding portion (11) and the light transmitting portion (12) are each of a fan-shaped structure, and both have the same central angle with respect to a rotation center of the light shielding device (1).

7. The imaging light source device according to any one of claims 1 to 5, wherein the light-transmitting portion (12) is a hollowed groove or a hollowed hole; alternatively, the light-transmitting portion (12) is a light-transmitting lens.

8. The imaging light source device according to any one of claims 1 to 5, wherein a connecting shaft is arranged in the middle of the shading device (1), the connecting shaft is connected with the motor (2) through a coupling, and the motor (2) is electrically connected with a controller for controlling the output of the motor (2).

9. An endoscope system comprising an imaging light source device (10), a scope (8) and a processor electrically connecting the imaging light source device (10) and the scope (8), characterized in that the imaging light source device (10) is the imaging light source device according to any one of claims 1 to 8, and the processor determines the type of image acquired by the scope (8) according to the alternating signal of the light shielding portion (11) and the light transmitting portion (12).

10. An endoscope system according to claim 9, characterized in that the scope body (8) is provided with an excitation light cut filter for filtering reflected laser light when acquiring images.

11. An endoscope system according to claim 9, characterized in that said laser light source (7) is connected to the insertion portion of said scope (8) by means of a first optical fiber;

and/or the white light source (6) transmits white light to a second optical fiber through a lens, the second optical fiber is connected with the insertion part of the lens body (8), and the shading device (1) is arranged between the lens and the second optical fiber.