CN220069664U

CN220069664U - Endoscope light source and endoscope imaging system

Info

Publication number: CN220069664U
Application number: CN202320519238.XU
Authority: CN
Inventors: 魏旭立; 刘彬
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Wuhan Mindray Medical Technology Research Institute Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Wuhan Mindray Medical Technology Research Institute Co Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-11-24
Anticipated expiration: 2033-03-16

Abstract

An endoscope light source and endoscope imaging system, this endoscope light source includes casing and sets up visible light generator, near infrared laser, near infrared light detection subassembly, visible light collimation light path subassembly, near infrared light collimation light path subassembly and the light path subassembly that closes in the casing, wherein: the visible light collimation light path component is arranged between the light emitting end of the visible light generator and the light combining light path component; the near infrared light collimation light path component is arranged between the light emitting end of the near infrared light laser and the light combining light path component; the near infrared light detection assembly is disposed in the near infrared light laser in an optical path behind the light emitting end of the near infrared light laser. According to the scheme, the near infrared light detection assembly is added into the near infrared light laser in the endoscope light source, so that near infrared light can be detected by the near infrared light detection assembly without interference, the detection result of near infrared light is more accurate, the stability of the output power of the light source is further realized, and the problem of power fluctuation of the light source is solved.

Description

Endoscope light source and endoscope imaging system

Technical Field

The utility model relates to the field of medical equipment, in particular to an endoscope light source and an endoscope imaging system.

Background

With the development of science and technology, an endoscope imaging system is widely used in the medical field, can observe the inside of a living body, and provides high-quality images for clinical operations and diagnoses. Because the living body is in a closed dark environment, a cold light source is needed to carry out light supplementing illumination on the target position in the living body. The illumination light emitting devices commonly used for cold light sources are two types, xenon lamps and light emitting diodes, LEDs. Wherein, the service life of the xenon lamp is only 500 hours, and the xenon lamp needs to be replaced frequently, so that the complicated work and the increase of the cost are caused; while the lifetime of LEDs can reach over ten thousand hours, it has become a trend in recent years to select LEDs instead of xenon lamps. Fluorescent imaging applications of cold light sources also require a light source to provide excitation light, and usually a filter is used to filter the infrared component in a xenon lamp as excitation light, and in recent years, because of the advantages of narrow line width and high electro-optical efficiency of a laser LD, the laser LD starts to replace the xenon lamp as a fluorescent excitation device.

The light output intensity and the spectrum curve of the LED/LD of the light emitting device are influenced by temperature and current, and the light output intensity can be changed due to factors such as aging of the light emitting device. After a period of use, the light source is supplied to the light emitting device at a preset current, and a desired light intensity may not be obtained. When the luminous flux is attenuated to a certain extent, the image quality of the camera system is obviously reduced, and clinical requirements may not be met seriously.

Disclosure of Invention

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In view of the problems existing at present, an aspect of the present utility model provides an endoscope light source, which includes a housing, and a visible light generator, a near infrared light laser, a near infrared light detection assembly, a visible light collimation light path assembly, a near infrared light collimation light path assembly, and a light combination light path assembly disposed in the housing, wherein: the visible light collimation light path component is arranged between the light emitting end of the visible light generator and the light combining light path component and is used for collimating the visible light generated by the visible light generator and outputting the collimated visible light to the light combining light path component; the near infrared light collimation light path component is arranged between the light emitting end of the near infrared light laser and the light combining light path component and is used for collimating near infrared light generated by the near infrared light laser and outputting the collimated near infrared light to the light combining light path component; the near infrared light detection component is arranged in the near infrared light laser and in a light path behind a light emitting end of the near infrared light laser and is used for detecting the intensity value of the near infrared light; the light combining light path component is used for coupling the collimated visible light and the collimated near infrared light and outputting the coupled visible light and the collimated near infrared light.

Illustratively, the cavity of the near-infrared laser includes a first light splitting sheet, and the near-infrared light detection assembly is disposed on a reflection path of the first light splitting sheet to collect near-infrared light reflected by the first light splitting sheet.

Illustratively, the near infrared light detection assembly is disposed at a predetermined location within the cavity of the near infrared light laser to collect stray near infrared light within the cavity.

Illustratively, the endoscope light source further comprises a visible light detection assembly disposed within the combined light path assembly for detecting an intensity value of the collimated visible light.

Illustratively, the light combining optical path assembly includes a second light splitting sheet, and the visible light detecting assembly is disposed on a reflection path of the second light splitting sheet to the collimated visible light to collect the visible light reflected by the second light splitting sheet.

Illustratively, the endoscope light source further comprises a visible light detection assembly and a visible light extraction assembly, wherein: the visible light extraction component is arranged in a light path of the output end of the visible light collimation light path component and is used for collecting part of visible light in the collimated visible light, and the rest part of visible light in the collimated visible light enters the light combination light path component; the visible light detection component is arranged in a light path of the output end of the visible light extraction component and is used for detecting the intensity value of part of visible light.

Illustratively, the near infrared light detection assembly includes a first photodiode detector and the visible light detection assembly includes a second photodiode detector.

Illustratively, the endoscope light source further comprises a main control portion, a visible light generator driving portion, and a near infrared laser driving portion, wherein: the visible light generator driving part is electrically connected with the main control part and the visible light generator and is used for driving the visible light generator to generate visible light under the control of the main control part; the near infrared laser driving part is electrically connected with the main control part and the near infrared laser and is used for driving the near infrared laser to generate near infrared light under the control of the main control part; the main control part is also electrically connected with the near infrared light detection component and is used for controlling the near infrared light laser driving part based on the output of the near infrared light detection component so that the output power of the near infrared light laser is kept within a first preset range.

Illustratively, the endoscope light source further comprises a main control portion, a visible light generator driving portion, and a near infrared laser driving portion, wherein: the visible light generator driving part is electrically connected with the main control part and the visible light generator and is used for driving the visible light generator to generate visible light under the control of the main control part; the near infrared laser driving part is electrically connected with the main control part and the near infrared laser and is used for driving the near infrared laser to generate near infrared light under the control of the main control part; the main control part is also electrically connected with the near infrared light detection assembly and is used for controlling the near infrared light laser driving part based on the output of the near infrared light detection assembly so that the output power of the near infrared light laser is kept within a first preset range; the main control part is also electrically connected with the visible light detection component and is used for controlling the visible light generator driving part based on the output of the visible light detection component, so that the output power of the visible light generator is kept within a second preset range.

Illustratively, the endoscope light source further comprises a diaphragm assembly disposed between the visible light detection assembly and the combined light path assembly, the clear aperture of the diaphragm assembly being variable such that the output value of the visible light detection assembly is within a third preset range.

Illustratively, the endoscope light source further comprises an amplifying circuit disposed between the visible light detection assembly and the main control portion for amplifying an output value of the visible light detection assembly.

Illustratively, the amplifying circuit includes a variable resistor therein, so that the amplifying result of the amplifying circuit on the output value of the visible light detecting component is adjustable, so that the signal value output to the main control part by the amplifying circuit is within a fourth preset range.

In another aspect, the present utility model provides an endoscope, the endoscope light source includes a housing, and a visible light generator, a near infrared light generator, a visible light detection assembly, a near infrared light detection assembly, a visible light collimation light path assembly, a near infrared light collimation light path assembly, a light combination light path assembly, a visible light detection adjustment assembly, and a near infrared light detection adjustment assembly disposed in the housing, wherein: the visible light collimation light path component is arranged between the light emitting end of the visible light generator and the light combining light path component and is used for collimating the visible light generated by the visible light generator and outputting the collimated visible light to the light combining light path component; the near infrared light collimation light path component is arranged between the light emitting end of the near infrared light generator and the light combining light path component and is used for collimating near infrared light generated by the near infrared light generator and outputting the collimated near infrared light to the light combining light path component; the visible light detection component is arranged in the light combination light path component and is used for detecting the intensity value of the collimated visible light; the near infrared light detection component is arranged in the light combining light path component and is used for detecting the intensity value of the collimated near infrared light; the visible light detection adjustment component is used for adjusting the output value of the visible light detection component so that the output value of the visible light detection component is in a first preset range; the near infrared light detection adjustment component is used for adjusting the output value of the near infrared light detection component so that the output value of the near infrared light detection component is in a second preset range; the light combining light path component is used for coupling the collimated visible light and the collimated near infrared light and outputting the coupled visible light and the collimated near infrared light.

Illustratively, the combined light path assembly includes a beam splitter, wherein: the visible light detection component is arranged on a reflection path of the light splitting sheet on the collimated visible light so as to collect the visible light reflected by the light splitting sheet; the near infrared light detection component is arranged on a transmission path of the light splitting sheet to the collimated near infrared light so as to collect near infrared light transmitted by the light splitting sheet.

The visible light detection adjustment assembly includes a first diaphragm assembly disposed between the visible light detection assembly and the light combining light path assembly, and a clear aperture of the first diaphragm assembly is variable such that an output value of the visible light detection assembly is within the first preset range.

The visible light detection adjustment component comprises a first amplifying circuit, wherein the first amplifying circuit comprises a first variable resistor, and the first amplifying circuit is electrically connected with the visible light detection component and is used for adjustably amplifying the output value of the visible light detection component to be within the first preset range.

The near infrared light detection adjustment assembly includes a second diaphragm assembly disposed between the near infrared light detection assembly and the light combining optical path assembly, and a clear aperture of the second diaphragm assembly is variable such that an output value of the near infrared light detection assembly is within the second preset range.

The near infrared light detection adjustment component comprises a second amplifying circuit, wherein the second amplifying circuit comprises a second variable resistor, and the second amplifying circuit is electrically connected with the near infrared light detection component and is used for adjustably amplifying the output value of the near infrared light detection component to be within the second preset range.

Illustratively, the endoscope light source further comprises a main control portion, a visible light generator driving portion, and a near infrared light generator driving portion, wherein: the visible light generator driving part is electrically connected with the main control part and the visible light generator and is used for driving the visible light generator to generate visible light under the control of the main control part; the near infrared light generator driving part is electrically connected with the main control part and the near infrared light generator and is used for driving the near infrared light generator to generate near infrared light under the control of the main control part; the main control part is also electrically connected with the visible light detection component and is used for controlling the visible light generator driving part based on the output of the visible light detection component so that the output power of the visible light generator is kept within a third preset range; the main control part is also electrically connected with the near infrared light detection component and is used for controlling the near infrared light generator driving part based on the output of the near infrared light detection component so that the output power of the near infrared light generator is kept within a fourth preset range.

In yet another aspect, the present utility model provides an endoscopic imaging system comprising an endoscopic light source as described above.

According to the endoscope light source and the endoscope imaging system, the near infrared light detection component is added in the endoscope light source, the near infrared light detection component is arranged in the near infrared light laser, near infrared light emitted by the light emitting end of the near infrared light laser can be detected by the near infrared light detection component without interference, so that the detection result of near infrared light is more accurate, on the basis, the light driver is controlled according to the detected light intensity, the light driver can drive the light source to output stable power, the problem of power fluctuation of the light source is solved, and the expected light intensity and the influence on clinic caused by the influence of temperature, current, aging and the like are avoided.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the utility model and their description to explain the principles of the utility model.

In the accompanying drawings:

FIG. 1A shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

FIG. 1B shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

FIG. 1C shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

FIG. 1D shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

FIG. 1E shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

FIG. 1F shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

FIG. 1G shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

FIG. 1H shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

Fig. 2A shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

Fig. 2B shows a schematic block diagram of an endoscope light source in accordance with an embodiment of the present utility model.

Detailed Description

The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the utility model are shown. This utility model may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. In the drawings, the size of layers and regions, as well as the relative sizes, may be exaggerated for clarity. Like numbers refer to like elements throughout.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and/or the present specification and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In order to provide a thorough understanding of the present utility model, detailed steps and structures will be presented in the following description in order to illustrate the technical solution presented by the present utility model. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

First, an endoscope light source of the present utility model is described with reference to fig. 1A. FIG. 1A shows a schematic block diagram of an endoscope light source in accordance with a specific embodiment of the present utility model. As shown in fig. 1A, the endoscope light source 100 includes a housing 101, a visible light generator 102, a visible light collimating light path assembly 103, a near infrared light laser 104, a near infrared light detecting assembly 105, a near infrared light collimating light path assembly 106, and a light combining light path assembly 107, which are disposed within the housing 101.

In one embodiment, as shown in fig. 1A, the light emitting end of the visible light generator 102 is connected to the input end of the visible light collimating optical path component 103, and the output end of the visible light collimating optical path component 103 is connected to the input end of the light combining optical path component 107, wherein: the visible light generator 102 is used for providing a visible light source, the visible light collimation light path component 103 is used for collimating the visible light generated by the visible light generator 102 and outputting the collimated visible light to the light combination light path component 107, and the light combination light path component 107 is used for coupling the collimated visible light and the collimated near infrared light and outputting the collimated visible light and the collimated near infrared light.

Illustratively, the visible light generator 102 is an LED, and the provided visible light source is an LED light source, which may provide a plurality of monochromatic lights in different wavelength ranges, a combined light of a plurality of monochromatic lights, or a broad spectrum white light source. Illustratively, the visible light generator 102 may also be a laser, some of which may directly provide a source of visible light; lasers that cannot directly provide a source of visible light can also change the frequency of the light by nonlinear frequency conversion to generate visible light.

Illustratively, the light beam entering the visible light collimating optical path assembly 103 from the light emitting end of the visible light generator 102 is in a divergent state, and the visible light collimating optical path assembly 103 is capable of converting the light beam in the divergent state into a parallel light beam. Illustratively, the visible light collimating optical path assembly 103 includes a collimating lens, and the beam waist size of the collimated beam can be changed by adjusting the focal length of the collimating lens.

In one embodiment, as shown in fig. 1A, the near-infrared light laser 104 is connected to an input end of the near-infrared light collimation optical path component 106, and an output end of the near-infrared light collimation optical path component 106 is connected to an input end of the light combining optical path component 107, where the near-infrared light laser 104 is used for providing a near-infrared light source, the near-infrared light collimation optical path component 106 is used for collimating near-infrared light generated by the near-infrared light laser 104 and outputting the collimated near-infrared light to the light combining optical path component 107, and the light combining optical path component 107 is used for coupling the collimated near-infrared light and the collimated visible light and outputting the collimated near-infrared light.

Illustratively, the light beam entering the near infrared light collimation path assembly 106 is in a divergent state, and the near infrared light collimation path assembly 106 is capable of converting the light beam in the divergent state into a parallel light beam. Illustratively, near infrared light collimation path assembly 106 includes a collimation lens, the beam waist size of which can be varied by adjusting the focal length of the collimation lens.

Illustratively, the combined light path assembly 107 includes a focusing lens capable of coupling and focusing the input collimated visible light with the collimated near infrared light at the proximal end of the light guide beam and outputting via the light guide beam to the distal end of the light guide beam for illumination to the target area.

In the embodiment of the present utility model, as shown in fig. 1A, the near infrared light detecting element 105 is disposed inside the near infrared light laser 104 and in the optical path after the light emitting end of the near infrared light laser 104. Since the near infrared light detection unit 105 is provided inside the near infrared light laser 104, near infrared light emitted from the light emitting end of the near infrared light laser 104 can be detected by the near infrared light detection unit 105, so that the endoscope light source 100 has the capability of detecting the light intensity value of near infrared light. Further, since the near infrared light detecting element 105 is disposed inside the near infrared light laser 104, the near infrared light detecting element 105 is not interfered by other light (such as visible light) when detecting near infrared light emitted from the light emitting end of the near infrared light laser 104, so that accuracy of the near infrared light detection result can be improved.

Therefore, in the embodiment of the utility model, the near infrared light detection component is added into the endoscope light source, the near infrared light detection component is arranged inside the near infrared light laser, the near infrared light emitted by the light emitting end of the near infrared light laser can be detected by the near infrared light detection component without interference, so that the detection result of near infrared light is more accurate, on the basis, the light driver is controlled according to the detected light intensity, the light driver can drive the light source to output stable power, thereby solving the problem of power fluctuation of the light source, and further avoiding the problem that expected light intensity cannot be obtained and the influence on clinic is caused due to the influence of temperature, current, aging and the like.

In one embodiment, the cavity of the near infrared laser 104 includes a first beam splitter therein, and the near infrared light detection assembly 105 is disposed on a reflection path of the first beam splitter to collect near infrared light reflected by the first beam splitter. For example, near infrared light passing through the first light-splitting sheet may be split in different ratios by changing the transmission/reflection ratio of the first light-splitting sheet. In this embodiment, it will be understood by those skilled in the art that the first dichroic sheet should be selected to have an appropriate transmission/reflection ratio according to actual needs. The first light-splitting sheet is illustratively a light-splitting glass sheet, but the material of the first light-splitting sheet in the present utility model is not limited thereto, as long as the required transmission/reflection ratio can be satisfied. Therefore, the light intensity of the near infrared light emitted from the near infrared light laser 104 can be calculated based on the light intensity of the near infrared light reflected by the first light splitting sheet and the transmission/reflection ratio of the first light splitting sheet detected by the near infrared light detecting element 105, and thus the light emitting power of the near infrared light laser 104 can be obtained.

In one embodiment, the near infrared light detecting component 105 is disposed at a preset position in the cavity of the near infrared light laser 104, because the near infrared light emitted by the near infrared light laser 104 diverges, by disposing the near infrared light detecting component 105 at the preset position in the cavity of the near infrared light laser 104, the near infrared light that is scattered in the cavity can be collected, so as to realize detection of the light intensity of the near infrared light emitted by the near infrared light laser 104, and thus obtain the light emitting power of the near infrared light laser 104.

In one embodiment, as shown in fig. 1B, the endoscope light source 100 further includes a visible light detection component 108, where the visible light detection component 108 is disposed in the light combining light path component 107, and the visible light emitted from the visible light generator 102 is collimated by the visible light collimating light path component 103 and then enters the light combining light path component 107, so as to be detected by the visible light detection component 108. By disposing the visible light detection component 108 in the light combining light path component 107, the light intensity of the collimated visible light can be detected, and the light emitting power of the visible light generator 102 can be obtained.

In one embodiment, the light combining optical path assembly includes a second light splitting sheet, and the visible light detecting assembly 108 is disposed on a reflection path of the second light splitting sheet to the collimated visible light, so as to collect the visible light reflected by the second light splitting sheet. For example, the visible light passing through the second light-splitting sheet may be split in different ratios by changing the transmission/reflection ratio of the second light-splitting sheet. In this embodiment, it will be appreciated by those skilled in the art that the second dichroic sheet should be selected to have an appropriate transmission/reflection ratio according to actual needs. The second light splitting sheet is illustratively a light splitting glass sheet, but the material of the second light splitting sheet in the present utility model is not limited thereto as long as the required transmission/reflection ratio can be satisfied. For example, the second light splitter with a larger transmission/reflection ratio may be selected so that most of the visible light is transmitted through the second light splitter and is coupled out with the near infrared light, and at the same time, a small part of the visible light is reflected to the visible light detection component 108, so that the influence on the light intensity of the coupled-out light can be reduced, but the utility model is not limited thereto, as long as the transmission/reflection ratio of the second light splitter can meet the normal transmission and reflection requirements. Illustratively, the second dichroic sheet includes a dichroic mirror capable of transmitting a majority of visible light and reflecting a minority of visible light. Therefore, the light intensity of the visible light emitted from the visible light generator 102 can be calculated based on the light intensity of the visible light reflected by the second light-splitting sheet detected by the visible light detection assembly 108 and the transmission/reflection ratio of the second light-splitting sheet, thereby obtaining the light-emitting power of the visible light generator 102.

In one embodiment, as shown in fig. 1C, the endoscope light source 100 further comprises a visible light detection assembly 108 and a visible light extraction assembly 109, wherein: the visible light extraction component 109 is arranged in the light path of the output end of the visible light collimation light path component 103, and is used for collecting part of visible light in the collimated visible light, and the rest part of the collimated visible light enters the light combination light path component 107; the visible light detection component 108 is disposed in the optical path of the output end of the visible light extraction component 109, and is used for detecting the intensity value of part of the visible light. Illustratively, the visible light extraction assembly 109 includes an optical fiber coupler, and splits and extracts the visible light through optical fiber coupling, and the visible light collected by the visible light extraction assembly 109 enters the visible light detection assembly 108, so that the visible light detection assembly 108 can detect the light intensity of the visible light collected by the visible light extraction assembly 109, and further obtain the light emitting power of the visible light generator 102.

In one embodiment, the visible light detection assembly 108 includes a first photodiode detector and the near infrared light detection assembly 105 includes a second photodiode detector. The first photodiode detector is used for converting the visible light received by the visible light detection component 108 into an electrical signal; the second photodiode detector is configured to convert the near infrared light received by the near infrared light detection assembly 105 into an electrical signal. The photoelectric diode detector is a semiconductor device capable of converting optical signals into electric signals, the core part of the photoelectric diode detector is a PN junction with photosensitive characteristics, when no light exists, the reverse current of the photoelectric diode detector is small, and the photoelectric diode detector is in a cut-off state; when the photoelectric detector is irradiated by light, photons carrying energy enter a PN junction, energy is transferred to bound electrons on a covalent bond, part of electrons break loose the covalent bond, and therefore electron-hole pairs, namely photo-generated carriers, are generated, and participate in drifting movement under the action of reverse voltage, so that reverse current is increased, and according to the characteristics, the photoelectric detector can realize photoelectric signal conversion. Those skilled in the art will recognize that since the process of detecting the light intensity value using the photodiode detector is well established, detailed description thereof will not be given here. In other embodiments, the visible light detection assembly 108 and the near infrared light detection assembly 105 may be implemented by other devices capable of detecting light intensity.

In one embodiment, as shown in FIG. 1D, the endoscope light source 100 includes a main control section 110, a visible light generator driving section 111, and a near infrared light laser driving section 112, wherein the visible light generator driving section 111 is connected with the main control section 110 and the visible light generator 102, such that the main control section 110 can control the visible light generator driving section 111 to drive the visible light generator 102 to generate visible light; the near-infrared light laser driving section 112 is connected to the main control section 110 and the near-infrared light laser 104, so that the main control section 110 can control the near-infrared light laser driving section 112 to drive the near-infrared light laser 104 to generate near-infrared light. Illustratively, the main control portion 110 may control the visible light generator driving portion 111 and the near infrared laser driving portion 112 simultaneously, and in other embodiments, the visible light generator driving portion 111 and the near infrared laser driving portion 112 may also be controlled by different main control portions.

In one embodiment, as shown in FIG. 1E, the endoscope light source 100 includes a main control section 110, a visible light generator driving section 111, and a near infrared light laser driving section 112, wherein the visible light generator driving section 111 is connected with the main control section 110 and the visible light generator 102, such that the main control section 110 can control the visible light generator driving section 111 to drive the visible light generator 102 to generate visible light; the near-infrared light laser driving part 112 is connected with the main control part 110 and the near-infrared light laser 104, so that the main control part 110 can control the near-infrared light laser driving part 112 to drive the near-infrared light laser 104 to generate near-infrared light; the main control portion 110 is further electrically connected to the near infrared light detecting assembly 105, and is configured to control the near infrared light laser driving portion 112 based on the output of the near infrared light detecting assembly 105, so that the output power of the near infrared light laser 104 is maintained within a first preset range. Illustratively, the main control portion 110 may control the visible light generator driving portion 111 and the near infrared laser driving portion 112 simultaneously, and in other embodiments, the visible light generator driving portion 111 and the near infrared laser driving portion 112 may also be controlled by different main control portions.

In one embodiment, as shown in fig. 1E, the main control unit 110 is electrically connected to the near infrared light detection unit 105, the near infrared light detection unit 105 converts the detected light intensity value of the near infrared light into an electrical signal and obtains the electrical signal through the electrical connection by the main control unit 110, so as to obtain the output power of the near infrared light laser 104 at this time, and compares the output power with a first preset range of the output power of the near infrared light laser 104, where the first preset range is a target range of the output power of the near infrared light laser 104 set according to the actual requirement, and if the detected output power of the near infrared light laser 104 falls outside the first preset range, the main control unit 110 controls the near infrared light laser driving unit 112 to drive the near infrared light laser 104 to change the output power until the output power of the near infrared light laser 104 obtained by the main control unit 110 falls within the first preset range. Illustratively, the output power of the near infrared laser 104 may be changed by trimming the current at which the near infrared laser drive 112 drives the near infrared laser 104, such as by trimming the current in fixed steps. An analog circuit and a digital circuit are exemplarily further disposed between the main control part 110 and the near infrared light detecting assembly 105, wherein the analog circuit includes a series of processes of amplifying, filtering, shaping, etc. the light intensity signal, and converts the electrical signal into a digital signal through analog-to-digital conversion; the digital circuit performs digital processing on the signal processed by the front-end analog circuit. By electrically connecting the main control portion 110 and the near infrared light detecting component 105, the light intensity value of the near infrared light detected by the near infrared light detecting component 105 can be fed back to the main control portion 110, and the output power of the near infrared light laser 104 at this time is further obtained, so that the main control portion 110 can compare the detected output power of the near infrared light laser 104 with a first preset range of the output power of the near infrared light laser 104, and drive the near infrared light laser 104 by controlling the near infrared light laser driving portion 112 to change the output power of the near infrared light laser 104 so that the output power thereof falls within the first preset range, thereby achieving the purpose of stabilizing the output power of the near infrared light laser 104.

In one embodiment, as shown in FIG. 1F, the endoscope light source 100 includes a main control section 110, a visible light generator driving section 111, and a near infrared light laser driving section 112, wherein the visible light generator driving section 111 is connected with the main control section 110 and the visible light generator 102, such that the main control section 110 can control the visible light generator driving section 111 to drive the visible light generator 102 to generate visible light; the near-infrared light laser driving part 112 is connected with the main control part 110 and the near-infrared light laser 104, so that the main control part 110 can control the near-infrared light laser driving part 112 to drive the near-infrared light laser 104 to generate near-infrared light; the main control part 110 is further electrically connected to the near infrared light detection component 105, and is configured to control the near infrared light laser driving part 112 based on the output of the near infrared light detection component 105, so that the output power of the near infrared light laser 104 is kept within a first preset range; the main control portion 110 is further electrically connected to the visible light detection assembly 108, and is configured to control the visible light generator driving portion 111 based on the output of the visible light detection assembly 108, so that the output power of the visible light generator 102 is maintained within a second preset range. Illustratively, the main control portion 110 may control the visible light generator driving portion 111 and the near infrared laser driving portion 112 simultaneously, and in other embodiments, the visible light generator driving portion 111 and the near infrared laser driving portion 112 may also be controlled by different main control portions.

In one embodiment, as shown in fig. 1F, the main control portion 110 is electrically connected to the visible light detecting component 108, the visible light detecting component 108 converts the detected light intensity value of the visible light into an electrical signal and is obtained by the main control portion 110 through the electrical connection, so as to obtain the output power of the visible light generator 102 at this time, and the second preset range is compared with a second preset range of the output power of the visible light generator 102, where the second preset range is a target range of the output power of the visible light generator 102 set according to the actual requirement, and if the detected output power of the visible light generator 102 falls outside the second preset range, the main control portion 110 controls the visible light generator driving portion 111 to drive the visible light generator 102 to change the output power thereof until the output power of the visible light generator 102 obtained by the main control portion 110 falls within the second preset range. Illustratively, the output power of the visible light generator 102 may be changed by trimming the current at which the visible light generator driving section 111 drives the visible light generator 102, for example by trimming the current in a fixed step. An analog circuit and a digital circuit are exemplarily further disposed between the main control portion 110 and the visible light detection assembly 108, wherein the analog circuit includes a series of processes of amplifying, filtering, shaping, etc. the light intensity signal, and converts the electrical signal into a digital signal through analog-to-digital conversion; the digital circuit performs digital processing on the signal processed by the front-end analog circuit. By electrically connecting the main control portion 110 with the near visible light detection component 108, the light intensity value of the visible light detected by the visible light detection component 108 can be fed back to the main control portion 110, and the output power of the visible light generator 102 at this time is further obtained, so that the main control portion 110 can compare the detected output power of the visible light generator 102 with a second preset range of the output power of the visible light generator 102, and the visible light generator 102 is driven by controlling the visible light generator driving portion 111 to change the output power of the visible light generator 102, so that the output power falls within the second preset range, and the purpose of stabilizing the output power of the visible light generator 102 is achieved.

In one embodiment, as shown in fig. 1G, the endoscope light source 100 further includes a diaphragm assembly 113, where the diaphragm assembly 113 is disposed between the visible light detection assembly 108 and the combined light path assembly 107, and a clear aperture of the diaphragm assembly 113 is variable, so that an output value of the visible light detection assembly 108 is within a third preset range. Illustratively, the diaphragm assembly 113 may be an edge of a lens, a frame, or a specially configured perforated screen that is capable of serving to control the size of the light beam passing through itself by varying the size of the effective light-passing cross section. In the process of detecting the light intensity of the collected visible light by the visible light detection component 108, due to the differences of assembly precision, light-taking optical materials and the like of different light source hosts, the light intensity of the collected visible light can be different, the output value of the visible light detection component 108 can be changed, the problems of overlarge or overlarge output value and the like can be caused, the overlarge output value can cause an overrun range, and the overlarge output value can have noise signals. Through setting up diaphragm subassembly 113 between visible light detection subassembly 108 and the light-combining light path subassembly 107, can make the output value of visible light detection subassembly 108 fall in the third through control diaphragm subassembly 113 and predetermine the scope, the third predetermine the scope is the reasonable range interval that sets up based on actual demand and the range of visible light detection subassembly 108, make the sample power of visible light stabilize in the scope of settlement, avoid because the assembly precision of different light source hosts, get the sample light intensity of light that optical material etc. have the difference and cause the influence to the visible light, the inconsistent problem of sample light intensity of the visible light of different light source hosts has been solved, simultaneously reduced the requirement of the dichroic mirror transmissivity reflectivity uniformity of light-extracting device, thereby its processing degree of difficulty and cost have been reduced.

In one embodiment, as shown in fig. 1H, the endoscope light source 100 further includes an amplifying circuit 114, and the amplifying circuit 114 is disposed between the visible light detection assembly 108 and the main control portion 110, for amplifying an output value of the visible light detection assembly 108.

In one embodiment, the amplifying circuit 114 includes a variable resistor, so that the amplifying result of the output value of the visible light detecting component 108 can be adjusted by changing the resistance value of the variable resistor, so that the signal value output by the amplifying circuit 114 to the main control portion 110 is in a fourth preset range, the fourth preset range is a reasonable range interval set based on the actual requirement and the resistance value range of the variable resistor, the sampling power of the visible light is stabilized in the set range, the influence on the sampling light intensity of the visible light due to the difference of the assembly precision and the light-taking optical materials of different light source hosts is avoided, the problem that the sampling light intensity of the visible light of different light source hosts is inconsistent is solved, and meanwhile, the requirement of the light-taking device for consistency of the transmittance and the reflectance of the dichroic mirror is reduced, thereby reducing the processing difficulty and the processing cost of the light-taking device.

An endoscope light source according to an embodiment of the present utility model is exemplarily described above. In the embodiment of the utility model, a near infrared light detection component is added into an endoscope light source, the near infrared light detection component is arranged inside a near infrared light laser, near infrared light emitted by a light emitting end of the near infrared light laser can be detected by the near infrared light detection component without interference, so that a detection result of near infrared light is more accurate, on the basis, a light driver is controlled according to the detected light intensity, the light driver can drive the light source to output stable power, thereby solving the problem of power fluctuation of the light source, and further avoiding the problem that expected light intensity cannot be obtained and the influence on clinic is caused due to the influence of temperature, current, aging and the like; meanwhile, the near infrared light detection assembly and the visible light detection assembly are respectively connected with the main control part, so that the measured light intensity value can be fed back to the main control part, the main control part can control the corresponding near infrared light laser driving part and the corresponding visible light generator driving part according to the output values of the near infrared light detection assembly and the visible light detection assembly to drive the corresponding near infrared light laser and the corresponding visible light generator to change the output power so as to fall into a preset range, the stability of the output power of the near infrared light and the visible light is realized, and the problem of power fluctuation of a light source is solved; meanwhile, the diaphragm component is arranged between the visible light detection component and the light combining light path component, or the amplifying circuit is arranged between the visible light detection component and the main control part, so that the output value of the visible light detection component falls in a preset range through controlling the diaphragm component or the amplifying circuit according to the output value of the visible light detection component, the stability of the sampling power of the visible light is realized, the influence on the sampling light intensity of the visible light due to the difference of the assembly precision of different light source hosts, the light taking optical materials and the like is avoided, the problem that the sampling light intensity of the visible light of different light source hosts is inconsistent is solved, and meanwhile, the requirement of the transmittance and the reflectivity consistency of a dichroic mirror of a light taking device is reduced, so that the processing difficulty and the processing cost are reduced.

The embodiment of the utility model also provides an endoscope imaging system, which comprises the endoscope light source in the embodiment.

In one embodiment, as shown in fig. 2A, an endoscope light source 200 includes a housing 201 and a visible light generator 202, a near infrared light generator 203, a visible light collimation light path component 204, a near infrared light collimation light path component 205, a combined light path component 206, a visible light detection component 207, a near infrared light detection component 208, a visible light detection adjustment component 209, and a near infrared light detection adjustment component 210 disposed within the housing, wherein: the visible light collimation light path component 204 is disposed between the light emitting end of the visible light generator 202 and the light combining light path component 206, and is configured to collimate the visible light generated by the visible light generator 202 and output the collimated light to the light combining light path component 206; the near-infrared light collimation light path component 205 is disposed between the light emitting end of the near-infrared light generator 203 and the light combining light path component 206, and is configured to collimate the near-infrared light generated by the near-infrared light generator 203 and output the collimated light to the light combining light path component 206; the visible light detection component 207 is disposed in the light combining optical path component 206 to detect the intensity value of the collimated visible light; the near infrared light detection component 208 is disposed in the light combining optical path component 206 to detect the intensity value of the collimated near infrared light; the visible light detection adjustment component 209 is configured to adjust an output value of the visible light detection component 207 such that the output value of the visible light detection component 207 is within a first preset range; the near infrared light detection adjustment component 210 is configured to adjust an output value of the near infrared light detection component 208 such that the output value of the near infrared light detection component 208 is within a second preset range; the light combining optical path component 206 is configured to couple the collimated visible light and the collimated near infrared light and output the coupled light.

Illustratively, the visible light generator 202 may be an LED or a laser, and in other embodiments, the visible light generator 202 may be any other suitable device capable of generating visible light. The near infrared light generator 203 may be an LED or a laser, and in other embodiments, the near infrared light generator 203 may be any other suitable device capable of generating near infrared light.

Illustratively, as shown in fig. 2A, the visible light detection adjustment component 209 is disposed between the light combining optical path component 206 and the visible light detection component 207, and in other embodiments, the visible light detection adjustment component 209 may also be connected to an output end of the visible light detection component 207. Illustratively, as shown in fig. 2A, the near-infrared light detection adjustment component 210 is disposed between the light combining optical path component 206 and the near-infrared light detection component 208, and in other embodiments, the near-infrared light detection adjustment component 210 may also be disposed behind the output end of the near-infrared light detection component 208.

Based on the above description, in the embodiments of the present utility model, the endoscope light source incorporates the visible light detection assembly and the near infrared light detection assembly, so that the light intensities of the light emitted from the visible light generator and the near infrared light generator can be detected; meanwhile, the visible light detection and adjustment assembly and the near infrared light detection and adjustment assembly are added, so that the output values of the visible light detection assembly and the near infrared light detection assembly can be adjusted to fall into a preset range, the stability of the sampling power of near infrared light and visible light is realized, the influence on the sampling light intensity of the visible light due to the difference of the assembly precision of different light source hosts, the light taking optical materials and the like is avoided, the problem that the sampling light intensity of the visible light of different light source hosts is inconsistent is solved, and meanwhile, the requirement of the transmittance and the reflectivity consistency of a dichroic mirror of a light taking device is reduced, so that the processing difficulty and the processing cost are reduced.

In one embodiment, the combined optical path assembly 206 includes a beam splitter, wherein: the visible light detection component 207 is arranged on a reflection path of the light splitting sheet on the collimated visible light so as to collect the visible light reflected by the light splitting sheet; the near infrared light detecting assembly 208 is disposed on a transmission path of the spectroscopic plate for the collimated near infrared light to collect near infrared light transmitted by the spectroscopic plate. For example, the visible light and the near infrared light passing through the light splitting sheet may be split in different ratios by changing the transmission/reflection ratio of the light splitting sheet. Illustratively, the light splitting sheet is a light splitting glass sheet, but the material of the light splitting sheet is not limited thereto. Illustratively, the light splitting sheet includes a dichroic mirror capable of transmitting a major portion of visible light and reflecting a minor portion of visible light; and is capable of reflecting a substantial portion of near-infrared light and transmitting a small portion of near-infrared light. Therefore, the light intensity of the visible light emitted from the visible light generator 202 can be calculated based on the light intensity of the visible light reflected by the light-splitting sheet detected by the visible light detection component 207 and the transmission/reflection ratio of the visible light by the light-splitting sheet, thereby obtaining the light-emitting power of the visible light generator 202; meanwhile, the light intensity of the near infrared light emitted by the near infrared light generator 203 can be calculated based on the light intensity of the near infrared light transmitted by the light splitting sheet detected by the near infrared light detecting component 208 and the transmission/reflection ratio of the light splitting sheet to the near infrared light, so as to obtain the light emitting power of the near infrared light generator 203.

In one embodiment, the visible light detection assembly 207 includes a first photodiode detector and the near infrared light detection assembly 208 includes a second photodiode detector. The first photodiode detector is used for converting the visible light received by the visible light detection component 207 into an electrical signal; the second photodiode detector is configured to convert the near infrared light received by the near infrared light detection assembly 208 into an electrical signal. The photoelectric diode detector is a semiconductor device capable of converting optical signals into electric signals, the core part of the photoelectric diode detector is a PN junction with photosensitive characteristics, when no light exists, the reverse current of the photoelectric diode detector is small, and the photoelectric diode detector is in a cut-off state; when the photoelectric detector is irradiated by light, photons carrying energy enter a PN junction, energy is transferred to bound electrons on a covalent bond, part of electrons break loose the covalent bond, and therefore electron-hole pairs, namely photo-generated carriers, are generated, and participate in drifting movement under the action of reverse voltage, so that reverse current is increased, and according to the characteristics, the photoelectric detector can realize photoelectric signal conversion. Those skilled in the art will recognize that since the process of detecting the light intensity value using the photodiode detector is well established, detailed description thereof will not be given here. In other embodiments, the visible light detection assembly 207 and the near infrared light detection assembly 208 may be implemented by other devices capable of detecting light intensity.

In one embodiment, the visible light detection adjustment component 209 includes a first diaphragm component, where the first diaphragm component is disposed between the light combining optical path component 206 and the visible light detection component 207, and a clear aperture of the first diaphragm component is variable, so that an output value of the visible light detection component 207 is within a first preset range, and the first preset range is a reasonable range interval set based on an actual requirement and a range of the visible light detection component 207.

In one embodiment, the visible light detection adjustment component 209 includes a first amplifying circuit, where the first amplifying circuit includes a first variable resistor, and the first amplifying circuit is connected to the output end of the visible light detection component 207, so that the amplifying result of the output value of the visible light detection component 207 can be adjusted by changing the resistance value of the variable resistor, so that the output value of the visible light detection component 207 is within a first preset range, and the first preset range is a reasonable range interval set based on the actual requirement and the resistance range of the variable resistor.

In one embodiment, the near infrared light detection adjustment component 210 includes a second diaphragm component, where the second diaphragm component is disposed between the light combining optical path component 206 and the near infrared light detection component 208, and the clear aperture of the second diaphragm component is variable, so that the output value of the near infrared light detection component 208 is within a second preset range, and the second preset range is a reasonable range interval set based on the actual requirement and the range of the near infrared light detection component 208.

In one embodiment, the near infrared light detection adjustment component 210 includes a second amplifying circuit, where the second amplifying circuit includes a second variable resistor, and the second amplifying circuit is connected to the output end of the near infrared light detection component 208, so that the amplification result of the output value of the visible light detection component 207 can be adjusted by changing the resistance value of the variable resistor, so that the output value of the near infrared light detection component 208 is within a second preset range, and the second preset range is a reasonable range interval set based on the actual requirement and the resistance value range of the variable resistor.

In one embodiment, as shown in fig. 2B, the endoscope light source 200 further includes a main control part 211, a visible light generator driving part 212, and a near infrared light generator driving part 213, wherein: a main control part 211, a visible light generator driving part 212 and a near infrared light generator driving part 213, wherein the visible light generator driving part 212 is connected with the main control part 211 and the visible light generator 202, so that the main control part 211 can control the visible light generator driving part 212 to drive the visible light generator 202 to generate visible light; the near infrared light generator driving part 213 is connected to the main control part 211 and the near infrared light generator 203, so that the main control part 211 can control the near infrared light generator driving part 213 to drive the near infrared light generator 203 to generate near infrared light; the main control part 211 is further electrically connected to the visible light detection assembly 207, and is configured to control the visible light generator driving part 212 based on the output of the visible light detection assembly 207, so that the output power of the visible light generator 202 is maintained within a third preset range; the main control part 211 is also electrically connected to the near infrared light detecting assembly 208 for controlling the near infrared light generator driving part 213 based on the output of the near infrared light detecting assembly 208 such that the output power of the near infrared light generator 203 is maintained within a fourth preset range. Illustratively, the main control portion 211 may control the visible light generator driving portion 212 and the near infrared light generator driving portion 213 simultaneously, and in other embodiments, the visible light generator driving portion 212 and the near infrared light generator driving portion 213 may also be controlled by different main control portions.

In one embodiment, as shown in fig. 2B, the main control portion 211 is electrically connected to the visible light detecting component 207, the visible light detecting component 207 converts the detected light intensity value of the visible light into an electrical signal and is obtained by the main control portion 211 through the electrical connection, so as to obtain the output power of the visible light generator 202 at this time, and the third preset range is compared with a third preset range of the output power of the visible light generator 202, which is set according to the actual requirement, and if the detected output power of the visible light generator 202 falls outside the third preset range, the main control portion 211 controls the visible light generator driving portion 212 to drive the visible light generator 202 to change the output power until the output power of the visible light generator 202 obtained by the main control portion 211 falls within the third preset range. Illustratively, the output power of the visible light generator 202 may be changed by trimming the current at which the visible light generator drive 212 drives the visible light generator 202, such as by trimming the current in fixed steps. An analog circuit and a digital circuit are exemplarily further disposed between the main control part 211 and the visible light detection component 207, wherein the analog circuit includes a series of processes of amplifying, filtering, shaping, etc. the light intensity signal, and converts the electrical signal into a digital signal through analog-to-digital conversion; the digital circuit performs digital processing on the signal processed by the front-end analog circuit. By electrically connecting the main control portion 211 with the visible light detection component 207, the light intensity value of the visible light detected by the visible light detection component 207 can be fed back to the main control portion 211, and the output power of the visible light generator 202 at this time is further obtained, so that the main control portion 211 can compare the detected output power of the visible light generator 202 with a third preset range of the output power of the visible light generator 202, and drive the visible light generator 202 by controlling the visible light generator driving portion 212 to change the output power of the visible light generator 202 so that the output power thereof falls within the third preset range, so as to achieve the purpose of stabilizing the output power of the visible light generator 202.

In one embodiment, as shown in fig. 2B, the main control portion 211 is electrically connected to the near infrared light detecting component 208, the near infrared light detecting component 208 converts the detected light intensity value of the near infrared light into an electrical signal and is acquired by the main control portion 211 through the electrical connection, so as to obtain the output power of the near infrared light generator 203 at this time, and the output power of the near infrared light generator 203 is compared with a fourth preset range of the output power of the near infrared light generator 203, the fourth preset range is a target range of the output power of the near infrared light generator 203 set according to the actual requirement, and if the detected output power of the near infrared light generator 203 falls outside the fourth preset range, the main control portion 211 controls the near infrared light generator driving portion 213 to drive the near infrared light generator 203 to change the output power until the output power of the near infrared light generator 203 acquired by the main control portion 211 falls within the fourth preset range. Illustratively, the output power of the near infrared light generator 203 may be changed by trimming the current at which the near infrared light generator driving section 213 drives the near infrared light generator 203, for example by trimming the current in a fixed step. An analog circuit and a digital circuit are illustratively disposed between the main control portion 211 and the near infrared light detecting component 208, wherein the analog circuit includes a series of processes of amplifying, filtering, shaping, etc. the light intensity signal, and converts the electrical signal into a digital signal through analog-to-digital conversion; the digital circuit performs digital processing on the signal processed by the front-end analog circuit. By electrically connecting the main control portion 211 and the near infrared light detecting component 208, the light intensity value of the near infrared light detected by the near infrared light detecting component 208 can be fed back to the main control portion 211, and the output power of the near infrared light generator 203 at this time is further obtained, so that the main control portion 211 can compare the detected output power of the near infrared light generator 203 with a fourth preset range of the output power of the near infrared light generator 203, and drive the near infrared light generator 203 by controlling the near infrared light generator driving portion 213 to change the output power for the purpose of stabilizing the output power of the near infrared light generator 203 so that the output power thereof falls within the fourth preset range, thereby achieving the purpose of stabilizing the output power of the near infrared light generator 203.

An endoscope light source according to an embodiment of the present utility model is exemplarily described above. In the embodiment of the utility model, the near infrared light detection component and the visible light detection component are added into the light combination light path component, so that the detection of the light intensity of the near infrared light and the visible light is realized; meanwhile, the near infrared light detection assembly and the visible light detection assembly are respectively connected with the main control part, so that the measured light intensity value can be fed back to the main control part, the main control part can control the corresponding near infrared light laser driving part and the corresponding visible light generator driving part according to the output values of the near infrared light detection assembly and the visible light detection assembly to drive the corresponding near infrared light laser and the corresponding visible light generator to change the output power so as to fall into a preset range, the stability of the output power of the near infrared light and the visible light is realized, and the problem of power fluctuation of a light source is solved; meanwhile, by arranging the visible light detection and adjustment assembly and the near infrared light detection and adjustment assembly, the output values of the visible light detection assembly and the near infrared light detection assembly are in a preset range, the stability of sampling power of near infrared light and visible light is realized, the influence on the sampling light intensity of the visible light due to the difference of assembly precision, light-taking optical materials and the like of different light source hosts is avoided, the problem that the sampling light intensity of the visible light of different light source hosts is inconsistent is solved, and meanwhile, the requirement of the transmittance and the reflectance consistency of a dichroic mirror of a light-taking device is reduced, so that the processing difficulty and the processing cost are reduced.

Although a number of embodiments have been described herein, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various modifications and alterations may be made in the arrangement and/or component parts of the subject matter within the scope of the disclosure, the drawings, and the appended claims. In addition to modifications and variations in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.

Claims

1. An endoscope light source, its characterized in that, the endoscope light source includes the casing and sets up visible light generator, near infrared laser, near infrared light detection subassembly, visible light collimation light path subassembly, near infrared light collimation light path subassembly and the light beam combining light path subassembly in the casing, wherein:

the visible light collimation light path component is arranged between the light emitting end of the visible light generator and the light combining light path component and is used for collimating the visible light generated by the visible light generator and outputting the collimated visible light to the light combining light path component;

The near infrared light collimation light path component is arranged between the light emitting end of the near infrared light laser and the light combining light path component and is used for collimating near infrared light generated by the near infrared light laser and outputting the collimated near infrared light to the light combining light path component;

the near infrared light detection component is arranged in the near infrared light laser and in a light path behind a light emitting end of the near infrared light laser and is used for detecting the intensity value of the near infrared light;

the light combining light path component is used for coupling the collimated visible light and the collimated near infrared light and outputting the coupled visible light and the collimated near infrared light.

2. The endoscope light source of claim 1, wherein the cavity of the near infrared laser comprises a first light splitting sheet, and the near infrared light detection assembly is disposed on a reflection path of the first light splitting sheet to collect near infrared light reflected by the first light splitting sheet.

3. The endoscope light source of claim 1, wherein the near infrared light detection assembly is disposed at a predetermined location within the cavity of the near infrared light laser to collect stray near infrared light within the cavity.

4. The endoscope light source of claim 1, further comprising a visible light detection assembly disposed within the combined light path assembly for detecting an intensity value of the collimated visible light.

5. The endoscope light source of claim 4, wherein the combined light path assembly comprises a second light splitting sheet, and the visible light detection assembly is disposed on a reflection path of the second light splitting sheet to the collimated visible light to collect the visible light reflected by the second light splitting sheet.

6. The endoscope light source of claim 1, further comprising a visible light detection assembly and a visible light extraction assembly, wherein:

the visible light extraction component is arranged in a light path of the output end of the visible light collimation light path component and is used for collecting part of visible light in the collimated visible light, and the rest part of visible light in the collimated visible light enters the light combination light path component;

the visible light detection component is arranged in a light path of the output end of the visible light extraction component and is used for detecting the intensity value of part of visible light.

7. The endoscope light source of claim 4, wherein the near infrared light detection assembly comprises a first photodiode detector and the visible light detection assembly comprises a second photodiode detector.

8. The endoscope light source of any of claims 1-7, further comprising a master control section, a visible light generator drive section, and a near infrared laser drive section, wherein:

The visible light generator driving part is electrically connected with the main control part and the visible light generator and is used for driving the visible light generator to generate visible light under the control of the main control part;

the near infrared laser driving part is electrically connected with the main control part and the near infrared laser and is used for driving the near infrared laser to generate near infrared light under the control of the main control part;

the main control part is also electrically connected with the near infrared light detection component and is used for controlling the near infrared light laser driving part based on the output of the near infrared light detection component so that the output power of the near infrared light laser is kept within a first preset range.

9. The endoscope light source of any of claims 4-7, further comprising a master control section, a visible light generator drive section, and a near infrared laser drive section, wherein:

The main control part is also electrically connected with the near infrared light detection assembly and is used for controlling the near infrared light laser driving part based on the output of the near infrared light detection assembly so that the output power of the near infrared light laser is kept within a first preset range;

the main control part is also electrically connected with the visible light detection component and is used for controlling the visible light generator driving part based on the output of the visible light detection component, so that the output power of the visible light generator is kept within a second preset range.

10. The endoscope light source of any of claims 4-7, further comprising a diaphragm assembly disposed between the visible light detection assembly and the combined light path assembly, the clear aperture of the diaphragm assembly being variable such that the output value of the visible light detection assembly is within a third preset range.

11. The endoscope light source of claim 9, further comprising an amplification circuit disposed between the visible light detection assembly and the main control portion for amplifying an output value of the visible light detection assembly.

12. The endoscope light source according to claim 11, wherein a variable resistor is included in the amplifying circuit, so that an amplification result of the amplifying circuit on the output value of the visible light detecting component is adjustable, so that a signal value output from the amplifying circuit to the main control section is within a fourth preset range.

13. The utility model provides an endoscope light source, its characterized in that, endoscope light source includes the casing and sets up visible light generator, near infrared light generator, visible light detection subassembly, near infrared light detection subassembly, visible light collimation light path subassembly, near infrared light collimation light path subassembly, light combination light path subassembly, visible light detection adjustment subassembly and near infrared light detection adjustment subassembly in the casing, wherein:

the near infrared light collimation light path component is arranged between the light emitting end of the near infrared light generator and the light combining light path component and is used for collimating near infrared light generated by the near infrared light generator and outputting the collimated near infrared light to the light combining light path component;

The visible light detection component is arranged in the light combination light path component and is used for detecting the intensity value of the collimated visible light;

the near infrared light detection component is arranged in the light combining light path component and is used for detecting the intensity value of the collimated near infrared light;

the visible light detection adjustment component is used for adjusting the output value of the visible light detection component so that the output value of the visible light detection component is in a first preset range;

the near infrared light detection adjustment component is used for adjusting the output value of the near infrared light detection component so that the output value of the near infrared light detection component is in a second preset range;

14. The endoscope light source of claim 13, wherein the combined light path assembly comprises a beam splitter, wherein:

the visible light detection component is arranged on a reflection path of the light splitting sheet on the collimated visible light so as to collect the visible light reflected by the light splitting sheet;

the near infrared light detection component is arranged on a transmission path of the light splitting sheet to the collimated near infrared light so as to collect near infrared light transmitted by the light splitting sheet.

15. The endoscope light source of claim 13, wherein the near infrared light detection assembly comprises a first photodiode detector and the visible light detection assembly comprises a second photodiode detector.

16. The endoscope light source of claim 13, wherein the visible light detection adjustment assembly comprises a first diaphragm assembly disposed between the visible light detection assembly and the combined light path assembly, the clear aperture of the first diaphragm assembly being variable such that the output value of the visible light detection assembly is within the first preset range.

17. The endoscope light source of claim 13, wherein the visible light detection adjustment assembly comprises a first amplification circuit comprising a first variable resistor therein, the first amplification circuit being electrically connected to the visible light detection assembly for adjustably amplifying an output value of the visible light detection assembly to within the first preset range.

18. The endoscope light source of claim 13, wherein the near infrared light detection adjustment assembly comprises a second diaphragm assembly disposed between the near infrared light detection assembly and the combined light path assembly, the clear aperture of the second diaphragm assembly being variable such that the output value of the near infrared light detection assembly is within the second preset range.

19. The endoscope light source of claim 13, wherein the near infrared light detection adjustment assembly comprises a second amplification circuit comprising a second variable resistor therein, the second amplification circuit being electrically connected to the near infrared light detection assembly for adjustably amplifying an output value of the near infrared light detection assembly to within the second preset range.

20. The endoscope light source of any of claims 13-19, further comprising a master control portion, a visible light generator drive portion, and a near infrared light generator drive portion, wherein:

the near infrared light generator driving part is electrically connected with the main control part and the near infrared light generator and is used for driving the near infrared light generator to generate near infrared light under the control of the main control part;

the main control part is also electrically connected with the visible light detection component and is used for controlling the visible light generator driving part based on the output of the visible light detection component so that the output power of the visible light generator is kept within a third preset range;

The main control part is also electrically connected with the near infrared light detection component and is used for controlling the near infrared light generator driving part based on the output of the near infrared light detection component so that the output power of the near infrared light generator is kept within a fourth preset range.

21. An endoscopic imaging system, characterized in that it comprises the endoscopic light source of any one of claims 1-20.