Device for adjusting the optical path of endoscope light source

Abstract

The present invention provides an adjustment device for the optical path of an endoscope light source, comprising: a first receiving surface, the first receiving surface is installed and positioned at the light beam focusing position A of an optical module, and has a surface transmission characteristic; a first adjustment device, the first adjustment device is fixed on an optical platform, the first adjustment device comprises: a collimator, a second receiving surface located on the focal plane of the collimator, and a first camera device, the optical module is connected to the collimator optical path; the second receiving surface is arranged perpendicular to the optical axis and has a surface transmission characteristic; the first camera device, the first camera device can achieve clear imaging of the second receiving surface through zooming and / or focusing functions, wherein the imaging state includes near-focus imaging and far-focus imaging; a display, the display is electrically connected to the first camera device, and the display is used to display the imaging of the first camera device. The device can achieve high-precision and stable optical path adjustment of the endoscope light source optical module, and has a simple structure and convenient installation.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to an adjustment device for an optical path of an endoscope light source. Background Art

[0002] According to the diagnostic requirements of endoscopes used in the medical field, the endoscope light source has a white light source and a narrow-band spectrum light source, so its light source is required to adopt a multi-channel light-combining system. In addition to the traditional xenon lamp / halogen white light source, the additive white light source of the longer-life blue, green and red LD (laser diode) or LED (light emitting diode) combined by a dichroic plate is adopted.

[0003] The addition of multiple light sources further complicates the adjustment of the optical path of the endoscope light source, and the endoscope light source in the medical field has strict requirements on the color balance of the spectrum, so higher requirements are placed on the optical path assembly. As the core optical module of the endoscope light source, the optical path adjustment directly affects the performance indicators of the output illumination light and has an important impact on the normal operation of the endoscope imaging system. Therefore, how to perform high-precision adjustment of the endoscope light path has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The present invention is to solve the above technical problems, and the purpose of the present invention is to provide an adjustment device for the optical path of an endoscope light source.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The present invention proposes an adjustment device for the optical path of an endoscope light source, wherein the endoscope light source optical module has a plurality of optical components to be adjusted, and the adjustment device adjusts each optical component in turn, and the adjustment device comprises: a first receiving surface, which is installed and positioned at a light beam focusing position A of the optical module, and has a surface transmission characteristic; a first adjustment device, which is fixed on an optical platform, and comprises: a collimator, a second receiving surface located on a focal plane of the collimator, and a first camera device, wherein the collimator is connected to the optical module on the optical path; the second receiving surface is arranged perpendicular to the optical axis and has a transmission characteristic; the first camera device, which can achieve clear imaging of the second receiving surface through zooming and / or focusing functions, wherein the imaging state includes near-focus imaging and far-focus imaging; a display, which is electrically connected to the first camera device, and is used to display the imaging of the first camera device.

[0007] The above-mentioned device for adjusting the optical path of an endoscope light source of the present invention may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the first receiving surface also has a transmission characteristic, and the adjustment device further includes: a beam splitter and a second adjustment device, wherein the beam splitter is arranged at a first preset angle α with the optical axis, the beam splitter has transmission and surface reflection characteristics, and the beam splitter is used to transmit the transmitted light beam of the first receiving surface into the first adjustment device and reflect it into the second adjustment device; a second adjustment device, the second adjustment device and the first adjustment device and the optical axis are symmetrically arranged relative to the reflection surface of the beam splitter, the second adjustment device includes a second camera device, the second camera device is electrically connected to the display, and the second camera device can achieve clear imaging of the first receiving surface through zooming and / or focusing functions; the display is also used to display the imaging of the second camera device.

[0009] According to an embodiment of the present invention, the first preset angle α is 45°.

[0010] According to one embodiment of the present invention, the above-mentioned adjustment device for the endoscope light source optical path also includes: an operation group, which is respectively connected to the multiple optical components of the optical module, and is used to drive the light source module to perform axial adjustment, vertical axis adjustment or angle adjustment; a control group, which is respectively connected to the operation group, the first camera device and the second camera device, and is used to issue control instructions to the operation group according to the imaging of the first camera device and the second camera device, so that the operation group drives the light source module to adjust.

[0011] According to one embodiment of the present invention, the optical module is connected to the receiving surface of the optical fiber light guide at the focusing position A to conduct light through the light guide.

[0012] According to one embodiment of the present invention, a cross mark and a scale are arranged at the center of the second receiving surface.

[0013] According to an embodiment of the present invention, a circular ring is provided in the central area of ​​the first receiving surface, and the diameter of the circular ring is equal to the light transmission diameter of the incident surface of the light guide beam.

[0014] According to an embodiment of the present invention, the material of the first receiving surface is optical glass or optical plastic.

[0015] According to an embodiment of the present invention, the second receiving surface is made of optical glass or optical plastic, or white paper is used as a simple substitute.

[0016] According to an embodiment of the present invention, the optical module is a three-way light combining system or a four-way light combining system, or other forms of light combining systems.

[0017] Beneficial effects of the present invention:

[0018] The present invention can realize high-precision and stable adjustment of the light path of the endoscope light source, and has a simple structure and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a three-way light combining system according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of an adjustment device for an endoscope light source optical path according to a first embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of an adjustment device for an endoscope light source optical path according to a second embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of a four-way light combining system according to an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of an adjustment device for an endoscope light source optical path according to a third embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of an adjustment device for an endoscope light source optical path according to a fourth embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of an adjustment device for an endoscope light source optical path according to a fifth embodiment of the present invention.

[0026] Reference numerals:

[0027] A first optical module 10; a first light source 11; a second light source 12; a third light source 13; a first collimating lens group 21; a second collimating lens group 22; a third collimating lens group 23; a first dichroic mirror 31; a second dichroic mirror 32; a focusing lens group 4; a light guide 40; a first receiving surface 5; a beam splitter 6; a first adjustment device 7; a second adjustment device 8; a parallel light tube 71; a second receiving surface 72; a first camera device 73; a second camera device 83; a display 9; a parallel light source 20; a second optical module 30; a fourth light source 14; a fourth collimating lens group 24; a third dichroic mirror 33; an automatic assembly component 90; an operation group 91; and a control group 92. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that the optical module of the endoscope light source in the present invention can be a three-way light combining system, or a four-way light combining system, or other forms of light combining systems. The three-way light combining system corresponds to the first optical module 10 described below, and the four-way light combining system corresponds to the second optical module 30 described below.

[0030] When the optical module of the endoscope light source is a three-way light combining system, such as Figure 1 , 2 3. The first optical module 10 of the endoscope light source is adjusted with high precision. The first optical module 10 includes a plurality of optical components and corresponding mechanical components for installation, fixing and adjustment. Figure 1 As shown, the first optical module 10 is a three-way light combining system; Figure 2 As shown, the first optical module 10 and the adjustment device are placed on an optical platform for adjustment. The first optical module 10 is connected to a parallel light tube on the optical path. The first optical module 10 is fixed on the optical platform through tooling. The adjustment device performs high-precision adjustment on multiple optical components in turn.

[0031] The multiple optical components of the three-way light combining system include: first, second and third light sources 11, 12 and 13, first, second and third collimating lens groups 21, 22 and 23, first and second dichroic mirrors 31, 32 and focusing lens group 4, which constitute the first, second and third light path systems, and the optical components are installed, fixed and adjusted by corresponding mechanical components to constitute a first optical module 10;

[0032] The first, second and third optical path systems are respectively composed of light sources 11, 12 and 13 and collimating lens groups 21, 22 and 23 at the front end of the optical path, and the light paths are combined by reflection and transmission of the first and second dichroic mirrors 31 and 32 in the middle of the optical path. The combined light beams are converged at position A by the focusing lens group 4 at the rear end of the optical path, and enter the interior of the light guide 40 through the receiving surface of the light guide 40 placed at position A for light conduction; preferably, the light sources 11, 21 and 31 are green light, red light and blue light LEDs, respectively;

[0033] Multiple optical components and mechanical components are installed and fixed according to one or more selected mounting reference surfaces; the machining of the mounting reference surfaces has high precision requirements;

[0034] Specifically, the mechanical components corresponding to the multiple optical components include an adjustment mechanism, which includes at least an axial adjustment device to achieve axial displacement along the optical axis; further, the adjustment mechanism also includes a vertical axis adjustment device to achieve displacement in a direction perpendicular to the optical axis; optionally, the adjustment mechanism also includes an angle adjustment device to compensate for the situation where the machining flatness or straightness of the mechanical component does not meet the requirements;

[0035] In particular, to assist the adjustment of the first optical module 10, the light beam focusing position A of the first optical module 10 is set as the reference position, and a first receiving surface 5 is provided at the position A, and the first receiving surface 5 has surface reflection or diffuse reflection and transmission characteristics; preferably, a ring A is provided in the central area of ​​the first receiving surface 5, and preferably, the diameter of the ring A is equal to the light passing diameter of the incident surface of the light guide 40, and further, a cross mark is provided in the ring A; optionally, the first receiving surface 5 is a light-transmitting material such as optical glass or optical plastic;

[0036] The first receiving surface 5 is fixed by a corresponding mechanical component. Preferably, the mechanical component includes a positioning hole and a positioning pin to achieve high-precision installation based on position A. Position A is achieved by the coordinated installation of the reference plane, the positioning hole and the positioning pin. The reference plane and the positioning hole are ensured by high-precision mechanical processing. In particular, the reference position provides a reference reference for the relative position of the first optical module 10 and the adjustment device.

[0037] The adjustment device comprises a beam splitter 6, a first adjustment device 7 and a second adjustment device 8. The beam splitter 6 is arranged at an angle α to the optical axis. The adjustment device is divided into two paths by transmission and surface reflection of the beam splitter 6. Preferably, the angle α is 45°. The first adjustment device 7 at least comprises a collimator 71, a second receiving surface 72 located on the focal plane of the collimator 71, and a first camera 73. The second adjustment device 8 at least comprises a second camera 83.

[0038] The second receiving surface 72 is arranged perpendicular to the optical axis and has a transmission characteristic. In particular, the receiving surface is a graticule, or a white paper can be simply selected as a substitute. Preferably, a cross mark and a scale are set in the center of the second receiving surface 72;

[0039] The adjustment device is fixed at the corresponding position by the corresponding mechanical components according to the above arrangement and fixed on the optical platform;

[0040] The first camera device 73 can clearly image the second receiving surface 72; the second camera device 83 can clearly image the first receiving surface 5. Preferably, the first and second camera devices 73 and 83 have focusing and / or zooming functions;

[0041] Preferably, the first and second camera devices 73 and 83 are respectively connected to a display 9 for image display;

[0042] Preferably, the output images of the first and second camera devices 73 and 83 may display a crosshair located at the center of the image;

[0043] In particular, the beam splitter 6, the first adjustment device 7 and the second adjustment device 8 are first calibrated before use to ensure that the optical axes of the first adjustment device 7 and the second adjustment device 8 are symmetrically arranged relative to the reflection surface of the beam splitter 6. Figure 3 As shown;

[0044] Preferably, the first calibration uses a parallel light source 20, and the parallel light or nearly parallel light emitted by the parallel light source 20 is transmitted through the beam splitter 6 into the first adjustment device 7 and reflected into the second adjustment device 8, forming a focused light spot on the first and second camera devices 73 and 83, respectively. The first calibration satisfies that the focused light spot is located at the center of the image of the first and second camera devices 73 and 83, respectively.

[0045] Before installation and adjustment, the first receiving surface 5 is first installed and positioned at position A of the first optical module 10, and the receiving surface 5 plays a role of reference positioning in assembly; secondly, the first and second dichroic mirrors 31 and 32 are installed, and the first receiving surface 5 is used as a reference surface. The 45° angle of the first and second dichroic mirrors 31 and 32 is determined by an optical angle measurement system. Optionally, the optical angle measurement system is a theodolite, which faces the dichroic mirrors along the optical axis, and checks the installation angle of the dichroic mirrors by the coincidence of its own cross marks and the cross marks reflected by the first receiving surface 5; preferably, the installation angle tolerance of the dichroic mirrors α≤1′; optionally, the optical angle measurement system can also be an internal focusing telescope; thirdly, the first, second, and third light sources 11, 12, 13 and the first, second, and third collimating lens groups 21, 22, 23 included in the first, second, and third optical paths are installed and pre-fixed before installation and adjustment; then the optical module that has completed the above assembly is installed and fixed on the optical platform through a tooling module, and placed opposite to the installation and adjustment device.

[0046] Before installation and adjustment, the first receiving surface 5 is used for second calibration to achieve relative position alignment between the first optical module 10 and the installation and adjustment device, and the position of the first optical module 10 is adjusted until the imaging position of the first receiving surface 5 through the first camera device 73 coincides with the center of the image cross;

[0047] Different adjustment sequences can be used to adjust each optical component in sequence; preferably, the first optical path is adjusted first, including the first light source 11, the first collimating lens group 21 and the focusing lens group 4, in particular, the first light source 11 or / and the first collimating lens group 21 are adjusted A first, and then the focusing lens group 4 is adjusted B; then the second light source 12 or / and the second collimating lens group 22 of the second optical path are adjusted C; similarly, the third optical path adjustment D is completed; before adjustment B is performed, the focusing lens group 4 needs to be fixed to the first optical module 10, and in each step of adjustment A to D, the light source of the optical path involved is turned on respectively, and the light sources of other optical paths remain turned off; in each step of adjustment, the adjustment is guided according to the imaging light spot obtained by the camera modules 73 and 83;

[0048] Camera module 1 guides the adjustment of A, and camera module 2 guides the adjustment of B, C, and D;

[0049] Adjustment A: The adjustment of each optical component is realized through the adjustment mechanism of the mechanical component to achieve good alignment of the optical path. The evaluation standard is that the imaging spot obtained by the first camera device 73 meets condition 1:

[0050] 1) The imaging spot reaches the smallest and clearest state. The clear state is defined as the spot edge having a sharp boundary;

[0051] 2) The center of the imaging light spot coincides with the center of the cross-marked line on the second receiving surface 72;

[0052] Adjust B, C and D, and adjust each optical component through the adjustment mechanism to achieve good alignment of the optical path. The evaluation standard is that the imaging spot obtained by the second camera device 83 meets condition 2:

[0053] 1) The imaging spot reaches the smallest and clearest state. The clear state is defined as the spot edge having a sharp boundary;

[0054] 2) The center of the imaging light spot coincides with the center of the cross-marked line on the first receiving surface 5;

[0055] The guiding effect of the imaging light spot is used to achieve good focusing of the light source by each light path and optimal overlap of the three light spots; preferably, the deviation of the focused light spot sizes of the first, second and third light paths on the receiving surface 5 does not exceed 3%.

[0056] The first optical module 10 of the endoscope is installed and adjusted according to the above process. Preferably, each optical component is fixed by screws after installation and adjustment. Optionally, a glue with a fixing effect such as thread fastening glue, silicone or UV glue is used to strengthen and / or buffer the installation and fixing process.

[0057] It is worth noting that the adjustment sequence is not unique. For example, the first, second, and third collimated light sources 11, 12, 13 and / or the collimating lens groups 21, 22, and 23 may be adjusted first, with the standard that the imaging spot obtained by the first camera device 73 meets condition 1; the focusing lens group 4 may be adjusted secondly, and finally the second and third collimating lens groups 22 and 23 may be axially adjusted for compensation, with the standard that the imaging spot obtained by the second camera device 83 meets condition 2.

[0058] When the optical module of the endoscope is a four-way light combining system, such as Figure 3 , 4 5. The second optical module 30 of the endoscope light source is adjusted with high precision. The second optical module 30 includes a plurality of optical components and corresponding mechanical components for installation, fixing and adjustment. Figure 4 As shown, the second optical module 30 is a four-way light combining system, based on the above three-way light combining system, a third dichroic mirror 33 is added and a fourth light path system is added.

[0059] The multiple optical components of the four-way light combining system include: a first, second, third, and fourth light source 11, 12, 13, and 14, a first, second, third, and fourth collimating lens group 21, 22, 23, and 24, a first, second, and third dichroic mirror 31, 32, and 33, and a focusing lens group 4, and constitute the first, second, third, and fourth light path systems, and the optical components are installed, fixed, and adjusted by corresponding mechanical components to constitute a second optical module 30;

[0060] The first, second, third and fourth optical path systems are respectively composed of the first, second, third and fourth light sources 11, 12, 13, 14 and collimating lens groups 21, 22, 23 and 24 at the front end of the optical path, and the first, second and third dichroic mirrors 31, 32 and 33 are used to combine the optical paths through transmission and reflection in the middle of the optical path. The combined light is converged at position A through the focusing lens group 4 at the rear end of the optical path, and enters the interior of the light guide 40 through the receiving surface of the light guide 40 placed at position A for light conduction; preferably, the light sources 11, 21, 31 and 41 are green light, red light, blue light LED and UV LED respectively;

[0061] Specifically, the mechanical components corresponding to the multiple optical components include an adjustment mechanism, which includes at least an axial adjustment device to achieve axial displacement along the optical axis; further, the adjustment mechanism also includes a vertical axis adjustment device to achieve displacement in a direction perpendicular to the optical axis; optionally, the adjustment mechanism also includes an angle adjustment device to compensate for the situation where the machining flatness or straightness of the mechanical component does not meet the requirements;

[0062] In particular, to assist the adjustment of the second optical module 30, the output light focusing position A of the second optical module 30 is set as the reference position, and a first receiving surface 5 is provided at the position A, and the first receiving surface 5 has surface reflection or diffuse reflection and transmission characteristics; preferably, a ring A is provided in the central area of ​​the first receiving surface 5, and preferably, the diameter of the ring A is equal to the light passing diameter of the incident surface of the light guide 40, and further, a cross mark is provided in the ring A; optionally, the first receiving surface 5 is a light-transmitting material such as glass or plastic;

[0063] The first receiving surface 5 is fixed by a corresponding mechanical component. Preferably, the mechanical component includes a positioning hole and a positioning pin to achieve high-precision installation based on position A. Position A is achieved by the coordinated installation of the reference plane, the positioning hole and the positioning pin. The reference plane and the positioning hole are ensured by high-precision mechanical processing. In particular, the reference position provides a reference for the relative position of the first optical module 10 and the adjustment device.

[0064] Before adjustment, the first receiving surface 5 is first installed and positioned at position A of the second optical module 30, and the receiving surface 5 plays a role of reference positioning in the assembly; secondly, the first and second dichroic mirrors 31 and 32 are installed, and the first receiving surface 5 is used as the reference surface, and the 45° angle of the first and second dichroic mirrors 31 and 32 is determined by the optical angle measurement system; similarly, the 45° angle of the third dichroic mirror 33 is detected and installed; preferably, the installation angle tolerance α of the first, second and third dichroic mirrors 31, 32, 33 is ≤1′; thirdly, the light sources 11, 12, 13, 14 and the collimating lens groups 21, 22, 23, 24 included in the first, second, third and fourth optical paths are installed and pre-fixed before adjustment; then the second optical module 30 that has completed the above assembly is installed and fixed on the optical platform through the tooling module, and placed opposite to the adjustment device.

[0065] Before adjustment, the first receiving surface 5 is used for second calibration to achieve relative position alignment between the first optical module 10 and the adjustment device, and the position of the second optical module 30 is adjusted until the imaging position of the first receiving surface 5 through the camera device 73 coincides with the center of the image cross;

[0066] Different adjustment sequences can be used to adjust each optical component in sequence; preferably, the first optical path is adjusted first, including the first light source 11, the first collimating lens group 21 and the focusing lens group 4, in particular, the first light source 11 or / and the first collimating lens group 21 are adjusted A first, and then the focusing lens group 4 is adjusted B; then the second light source 12 or / and the second collimating lens group 22 of the second optical path are adjusted C; similarly, the third optical path adjustment D and the fourth optical path adjustment E are completed; before adjustment B is performed, the focusing lens group 4 needs to be fixed to the second optical module 30; in each step of adjustment A to E, the light source of the optical path involved is turned on respectively, and the light sources of other optical paths remain turned off; in each step of adjustment, the adjustment is guided according to the imaging light spots obtained by the camera modules 73 and 83;

[0067] Camera module 1 guides the adjustment of A, and camera module 2 guides the adjustment of B, C, D and E;

[0068] Adjustment A, through the adjustment mechanism to adjust the various components to achieve good alignment of the light path, the evaluation standard is that the imaging spot obtained by the first camera device 73 meets:

[0069] 1) Whether the imaging spot reaches the smallest and clearest state. The clear state is defined as the sharp boundary of the spot edge;

[0070] 2) The center of the imaging light spot coincides with the center of the cross-marked line on the second receiving surface 72;

[0071] Adjust B, C, D and E, and adjust each optical component through the adjustment mechanism to achieve good alignment of the optical path. The evaluation standard is that the imaging spot obtained by the second camera device 83 satisfies:

[0072] 1) Whether the imaging spot reaches the smallest and clearest state. The clear state is defined as the sharp boundary of the spot edge;

[0073] 2) The center of the imaging light spot coincides with the center of the cross-marked line on the first receiving surface 5;

[0074] The guiding effect of the imaging light spot is used to achieve good focusing of the light source by each light path and optimal overlap of the four light spots; preferably, the deviation of the focused light spot sizes of the first, second, third and fourth light paths on the receiving surface 5 does not exceed 3%.

[0075] The installation and adjustment of the second optical module of the endoscope is completed according to the above process. Preferably, each optical component is fixed by screws after the installation and adjustment. Optionally, a glue with a fixing effect such as thread fastening glue, silicone or UV glue is used to strengthen and / or buffer the installation and fixing process.

[0076] See Figure 1 and 6, the first optical module 10 of the endoscope light source is adjusted with high precision, based on Figure 1-3 The corresponding embodiment is improved, see Figure 2 and Figure 6 The adjustment device is composed of a first adjustment device 7, and the first and second adjustment devices 7 and 8 are replaced by optimizing the first adjustment device 7; the first adjustment device 7 at least includes a collimator 71, a second receiving surface 72 located on the focal plane of the collimator 71, and a first camera device 73; the first camera device 73 can realize two imaging states A and B through zooming and / or focusing functions, satisfying condition 3:

[0077] 1) Imaging state A, which is in near focus, can achieve clear imaging of the second receiving surface 72;

[0078] 2) Imaging state B, at far focus, can realize clear imaging of the first receiving surface 5 through the collimator optical system;

[0079] The first camera device 73 can quickly switch between imaging states A and B;

[0080] The imaging state B of the first camera device 73 functionally replaces the second adjustment device 8; at the same time, the adjustment device does not need to perform the first calibration. Figure 3 As shown;

[0081] The device for adjusting the optical path of the endoscope light source can realize high-precision adjustment of the optical paths of the first optical module 10 and the second optical module 30 .

[0082] The imaging state B of the first camera device 73 is used to replace the second adjustment device 8, and the high-precision adjustment of the three-way light-combining system and the four-way light-combining system is completed in the same way.

[0083] In order to achieve high-precision automatic or semi-automatic adjustment of optical modules, ensure the stability of adjustment, and improve the efficiency of batch product adjustment, Figure 2 , Figure 6 On the basis of the corresponding embodiment, the present invention also proposes another device for adjusting the light path of an endoscope light source

[0084] See Figure 1 , 2 7, the first optical module 10 is a three-way light combining system; the multiple optical components of the three-way light combining system include: first, second, and third light sources 11, 12, and 13, first, second, and third collimating lens groups 21, 22, and 23, first and second dichroic mirrors 31, 32, and focusing lens group 4, which constitute the first, second, and third light path systems, and the optical components are installed, fixed, and adjusted by corresponding mechanical components to constitute the first optical module 10;

[0085] Multiple optical components are fully or partially connected to the automatic assembly component 90, and the automatic assembly component 90 is composed of an operation group 91 and a control group 92 connected thereto. The operation group is connected to the multiple optical components, and the operation group is used to drive the multiple optical components to perform axial adjustment, vertical axis adjustment or angle adjustment.

[0086] based on Figure 2 In the embodiment shown, the control group 92 is connected to the operating group 91, the first camera device and the second camera device respectively, and the control group is used to send control instructions to the operating group according to the images of the first camera device and the second camera device, so that the operating group drives the multiple optical components to adjust.

[0087] based on Figure 6 In the corresponding embodiment, the control group 92 is connected to the first camera device 73 and communicates with the first camera device 73. Figure 7 .

[0088] Optionally, the first, second, third collimating lens groups 21 , 22 and 23 and the focusing lens group 4 are connected to an automatic assembly component 90 .

[0089] Control group 92 has a built-in spot evaluation system to Figure 1-3 The imaging spot conditions 1 and 2 of the corresponding embodiment are used as evaluation criteria.

[0090] based on Figure 6 The adjustment device is used to compare the imaging spots obtained by the imaging states A and B of the first camera device 73 in each of the adjustment steps A to D to see whether they meet condition 1 or condition 2. Figure 7 .

[0091] based on Figure 2 The adjustment device is used to compare whether the imaging spots obtained by the first camera device 73 and the second camera device 83 in each adjustment step A to D meet condition 1 or condition 2.

[0092] Preferably, the control group 92 has a built-in spot evaluation system, and the evaluation standard is the focus spot size of the first, second and third light paths on the receiving surface 5, and the deviation does not exceed 3%.

[0093] Through the guiding role of the imaging light spot, good focusing of the light source by each light path and optimal overlap of the three light spots can be achieved.

[0094] The multiple optical components are fully or partially connected to the automatic assembly component 90 for automatic or semi-automatic assembly, thereby ensuring the stability of assembly and adjustment and improving the assembly and adjustment efficiency of batch products.

[0095] In summary, the endoscope light source optical path adjustment device according to the embodiment of the present invention can perform automatic or semi-automatic adjustment of multiple optical components, achieve high precision, stability and automatic adjustment of the endoscope light source optical path, and has a simple structure and easy installation.

[0096] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise explicitly and specifically defined.

[0097] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, the technical personnel in this field can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and associate different embodiments or examples and features of different embodiments or examples described in this specification without mutual contradiction.

[0099] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for adjusting the optical path of an endoscope light source, characterized in that: The endoscope light source optical module has a plurality of optical components to be adjusted, and the adjustment device comprises: A first receiving surface, the first receiving surface is installed and positioned at a beam focusing position A of the optical module, and the first receiving surface has a surface transmission characteristic; A first adjustment device, the first adjustment device is fixed on the optical platform, and the first adjustment device comprises: a collimator, a second receiving surface located on the focal plane of the collimator, and a first camera device, wherein: The optical module is connected to the optical path of the collimator; The second receiving surface is arranged perpendicular to the optical axis and has a surface transmission characteristic; The first camera device is capable of achieving clear imaging of the second receiving surface through zooming and / or focusing functions, wherein the imaging states include near-focus imaging and far-focus imaging; a display, the display being electrically connected to the first camera device, and the display being used to display images of the first camera device; and a second adjustment device, wherein the beam splitter has transmission and surface reflection characteristics, and is used to transmit the light beam transmitted by the first receiving surface into the first adjustment device and reflect the light beam into the second adjustment device.

2. The device for adjusting the optical path of an endoscope light source according to claim 1, characterized in that: The first receiving surface also has surface reflection or diffuse reflection characteristics, wherein, The beam splitter is arranged at a first preset angle α with the optical axis, The second adjustment device is symmetrically arranged with the first adjustment device and the optical axis relative to the reflection surface of the beam splitter, the second adjustment device comprises a second camera device, the second camera device is electrically connected to the display, and the second camera device can achieve clear imaging of the first receiving surface through zooming and / or focusing functions; The display is also used to display the imaging of the second camera device.

3. The device for adjusting the light path of an endoscope light source according to claim 2, characterized in that: The first preset angle α is 45°.

4. The device for adjusting the light path of an endoscope light source according to claim 2, characterized in that: Also includes: An operating group, the operating group is connected to the multiple optical components of the optical module respectively, and the operating group is used to drive the optical module to perform axial adjustment, vertical axis adjustment or angle adjustment; A control group, wherein the control group is respectively connected to the operating group, the first camera device and the second camera device, and the control group is used to issue control instructions to the operating group according to the spot imaging states of the first camera device and the second camera device, so that the operating group drives the optical component to adjust.

5. The device for adjusting the optical path of an endoscope light source according to claim 1, characterized in that: The optical module is connected to the receiving surface of the optical fiber light guide at the focusing position A to conduct light through the light guide.

6. The device for adjusting the optical path of an endoscope light source according to claim 1, characterized in that: A cross mark and scale are arranged at the center of the second receiving surface.

7. The device for adjusting the optical path of an endoscope light source according to claim 5, characterized in that: A circular ring is arranged in the central area of ​​the first receiving surface, and the diameter of the circular ring is equal to the light transmission diameter of the incident surface of the light guide beam.

8. The device for adjusting the optical path of an endoscope light source according to claim 1, characterized in that: The first receiving surface is made of optical glass or optical plastic.

9. The device for adjusting the light path of an endoscope light source according to claim 1, characterized in that: The material of the second receiving surface is optical glass, optical plastic or white paper.

10. The device for adjusting the optical path of an endoscope light source according to any one of claims 1 to 9, characterized in that: The optical module is a three-way light combining system or a four-way light combining system.

Images