Three-dimensional image adapter and endoscope system with dual-lens synchronous focusing

Abstract

The present disclosure provides a dual-lens synchronously focused 3D image adapter, comprising: a lens unit comprising a first lens group and a second lens group, the positions of the first lens group and the second lens group being relatively fixed, and the imaging parameters of the relatively fixed first lens group and the second lens group being configured to be consistent; a focus knob that can be controlled by a user to rotate about the axis of the 3D image adapter, and the rotation of the focus knob causes the first lens group and the second lens group to move synchronously; and a transmission unit for converting the rotational motion of the focus knob into axial translational motion of the first lens group and the second lens group. The present disclosure also provides an endoscope system.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of medical equipment, and in particular relates to a three-dimensional image adapter with dual-lens synchronous focusing and an endoscope system. Background Art

[0002] In current medical endoscopic imaging systems, the images collected are mainly two-dimensional images, which can be called traditional 2D (two-dimensional) endoscope systems. In some scenarios that require high surgical precision, two-dimensional images lack information on image depth and are difficult to meet the requirements. However, three-dimensional images can well meet the relevant requirements, and this image system can be called a 3D (three-dimensional) endoscope system. In a 3D endoscope system, doctors can view the three-dimensional images of a 3D high-definition endoscope through a naked-eye 3D display or by wearing other auxiliary display devices. The perception of the inspected part inside the patient's body is more three-dimensional and realistic, which increases the accuracy and safety of the operation. Or, with the advancement of human-computer interaction, remote diagnosis and remote treatment of surgical robots, after applying 3D endoscope technology, can effectively improve the operating accuracy, safety and reliability of surgical robots.

[0003] With the development of technology, medical 3D endoscopes will also develop rapidly. 3D endoscopic imaging is more realistic than that of traditional 2D endoscopes and will eventually replace existing conventional 2D endoscopes. Currently, 3D endoscope systems on the market generally use two light sensors in the camera to receive images from two optical systems with the same parameters in the endoscope. After being processed by the image processing system, a real three-dimensional effect is presented. Like the adapter in the image acquisition system of a conventional 2D endoscope, the function of the three-dimensional image adapter of the 3D endoscope system is to clearly project the image of the objective lens at the front end of the endoscope onto the light sensor of the camera, achieving clear projection. Two optical lenses are provided in the three-dimensional image adapter. During the manufacturing process of the adapter, the two optical lenses are fixed in position to keep the focus constant, so that a clear image is presented within a specific object distance range.

[0004] Conventional 2D endoscope systems only produce two-dimensional images, lacking the depth dimension and unable to accurately reproduce the intraoperative scene. 3D endoscope systems can produce three-dimensional images. However, the 3D image adapter, which serves as the image acquisition system, uses two fixed optical lenses. The optimal object distance for image observation is within a specific range, and the distance cannot be adjusted according to the distance of the observed object, making it difficult to achieve optimal image clarity. Summary of the Invention

[0005] In order to solve at least one of the above technical problems, the present disclosure provides a three-dimensional image adapter with dual-lens synchronous focusing and an endoscope system.

[0006] According to one aspect of the present disclosure, a dual-lens synchronous focusing 3D image adapter includes:

[0007] a lens unit, the lens unit comprising a first lens group and a second lens group, wherein positions of the first lens group and the second lens group are configured to be relatively fixed, and imaging parameters of the relatively fixed first lens group and the second lens group are configured to be consistent;

[0008] a focus knob, wherein the focus knob can be controlled by a user to rotate around the axis of the 3D image adapter, and the first lens group and the second lens group are moved synchronously by rotating the focus knob; and

[0009] a transmission part, the transmission part being used to convert the rotational motion of the focus knob into the translational motion of the first lens group and the second lens group along the axial direction,

[0010] During the focusing process, the user rotates the focusing knob, and the transmission unit converts the rotational motion of the focusing knob into the translational motion of the first and second lens groups, so that the first and second lens groups are moved synchronously for synchronous focusing to obtain a clear three-dimensional image.

[0011] According to at least one embodiment of the present disclosure, a three-dimensional image adapter with dual-lens synchronous focusing further includes a lens connecting block and a translation guide block, wherein the first group of lenses and the second group of lenses are relatively fixed on the lens connecting block, and the lens connecting block is mounted to the translation guide block and can move along the translation guide block, thereby driving the first group of lenses and the second group of lenses to perform the translation movement.

[0012] According to at least one embodiment of the present disclosure, the dual-lens synchronous focusing 3D image adapter, the transmission part includes an internal gear and a lead screw.

[0013] The gear teeth of the internal gear mesh with the gear teeth provided on the inner side of the focusing knob, so that when the focusing knob is turned, the internal gear rotates.

[0014] The lead screw is provided with a lead screw thread and the internal gear is provided with a sleeve thread, and the lead screw thread and the sleeve thread are configured to convert the rotational motion of the internal gear into axial motion of the lead screw, and the lead screw is fixed to the lens connecting block, thereby driving the lens connecting block and the first and second lens groups to perform the translational motion through the translational motion of the lead screw.

[0015] According to at least one embodiment of the present disclosure, the dual-lens synchronous focusing 3D image adapter further includes an internal gear fixing portion fixed to the base of the adapter and used to limit the movement of the internal gear along the axial direction.

[0016] According to at least one embodiment of the dual-lens synchronous focusing three-dimensional image adapter disclosed herein, the rotational motion amplitude of the focusing knob is matched with the translational motion amplitude of the first and second lens groups by adjusting the module of the gear teeth of the internal gear and the gear teeth of the focusing knob, and / or by adjusting the pitch of the lead screw thread of the lead screw and the thread sleeve thread of the internal gear.

[0017] According to at least one embodiment of the present disclosure, a dual-lens synchronous focusing 3D image adapter further includes a first lens barrel and a second lens barrel, wherein the first lens barrel and the second lens barrel are fixed to a base of the adapter or are integrally formed with the base, and are respectively used to accommodate a first lens group and a second lens group.

[0018] The first group of lenses is provided with a first translational directing member, the first lens barrel is provided with a first translational directing slot, the first translational directing member is confined in the first translational directing slot to achieve translational orientation of the first group of lenses; the second group of lenses is provided with a second translational directing member, the second lens barrel is provided with a second translational directing slot, the second translational directing member is confined in the second translational directing slot to achieve translational orientation of the second group of lenses.

[0019] The dual-lens synchronous focusing 3D image adapter according to at least one embodiment of the present disclosure further includes an elastic member configured to eliminate axial movement gaps during synchronous movement of the first and second lens groups.

[0020] The dual-lens synchronous focusing 3D image adapter according to at least one embodiment of the present disclosure further includes a seal that is sleeved onto the base of the adapter and seals between the base and the camera mount cover.

[0021] According to at least one embodiment of the present disclosure, in a dual-lens synchronous focusing three-dimensional image adapter, the optical axis of the first group of lenses and the optical axis of the second group of lenses are set to be parallel and in the same horizontal plane, and after the imaging parameters of the first group of lenses are calibrated, the imaging parameters of the second group of lenses are calibrated so that the imaging parameters of the second group of lenses are consistent with the imaging parameters of the first group of lenses. The first group of lenses and the second group of lenses with consistent imaging parameters are locked to achieve relative fixation of their positions.

[0022] According to at least one embodiment of the present disclosure, the dual-lens synchronous focusing 3D image adapter further includes a fine-tuning member for fine-tuning the second group of lenses so that the imaging parameters of the second group of lenses are consistent with the imaging parameters of the first group of lenses.

[0023] According to another aspect of the present disclosure, an endoscope system includes:

[0024] Endoscope;

[0025] The three-dimensional image adapter as described in any one of the above items, wherein the three-dimensional image adapter is fixedly connected to the endoscope via an endoscope fixing seat; and

[0026] A camera is fixedly connected to the camera fixing seat of the three-dimensional image adapter.

[0027] The 3D image adapter disclosed herein achieves optimal image quality by independently calibrating its dual lenses. After the dual lenses are fixed relative to each other, they are connected to a focusing knob via an internal mechanism. In clinical use, when the distance of the observed object changes, the clinician or other end user rotates the focusing knob to simultaneously move the dual lenses back and forth, achieving a clear image. This solves the problem of endoscope systems failing to achieve clear images with changing distances. It provides an excellent user experience for the operator, ensuring a realistic reproduction of the intraoperative scene. The beneficial effects of this disclosure include: while the two sets of lenses typically require two focusing knobs for adjustment, this disclosure utilizes a single focusing knob, saving the cost of a single knob and significantly reducing the overall size of the product. Furthermore, the integrated sealing design reduces sealing risks. This structure, unlike other similar solutions on the market, balances operator experience, product size, and sealing performance. As the market for 3D endoscope systems continues to expand, the innovative advantages of this disclosure will become increasingly apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0029] Figure 1 2 is a schematic diagram of an exploded view of a dual-lens synchronous adjustment mechanism according to the present disclosure.

[0030] Figure 2 2 is a schematic diagram of the operation of the dual-lens synchronous adjustment mechanism according to the present disclosure.

[0031] Figure 3 is an exploded schematic diagram of a three-dimensional image adapter according to the present disclosure.

[0032] Figure 4 is an exploded schematic diagram of an endoscope system according to the present disclosure.

[0033] Figure 5 FIG. 4 is a schematic diagram of the operation of the 3D image adapter according to the present disclosure.

[0034] Description of Reference Numerals

[0035] 1 3D graphics adapter

[0036] 2 Endoscope

[0037] 3 cameras

[0038] 10 Dual-lens synchronous adjustment mechanism

[0039] 100 Lens Department

[0040] 110 First Shot

[0041] 111 first translational directional member

[0042] 112 First translation orientation slot

[0043] 120 Second set of shots

[0044] 121 second translational directional member

[0045] 122 Second translation orientation slot

[0046] 200 Focus knob

[0047] 300 Delivery Department

[0048] 310 internal gear

[0049] 320 lead screw

[0050] 330 Internal gear fixing part

[0051] 410 lens connection block

[0052] 415 connecting block screw

[0053] 420 translation guide block

[0054] 500 matrix

[0055] 510 seals

[0056] 520 fixed surface

[0057] 600 Lens barrel

[0058] 610 First Lens

[0059] 620 Second Lens Barrel

[0060] 700 Endoscope Mount

[0061] 710 Endoscope Push Plate

[0062] 720 Transparent Window

[0063] 800 Camera Mount

[0064] 810 Camera Locking Pin

[0065] 820 Camera Mount Cover

[0066] 830 Transparent window. DETAILED DESCRIPTION

[0067] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0068] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0069] Unless otherwise stated, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / examples may be further combined, separated, interchanged, and / or rearranged without departing from the technical concepts of the present disclosure.

[0070] The use of cross hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise indicated, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the order described. In addition, the same figure numbers represent the same components.

[0071] When a component is referred to as being “on,” “over,” “connected to,” or “coupled to” another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another component, there are no intervening components present. For this purpose, the term “connected” may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0072] For descriptive purposes, the present disclosure may use spatially relative terms such as "below," "beneath," "under," "down," "above," "upper," "above," "higher," and "side (e.g., in a "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be positioned "above" the other component or feature. Thus, the exemplary term "below" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0073] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values and / or the values provided that will be recognized by those of ordinary skill in the art.

[0074] According to one embodiment of the present disclosure, a three-dimensional image adapter with dual-lens synchronous focusing is provided. Figure 1 The invention shows an adjustment mechanism of a dual-lens synchronous focusing 3D image adapter according to an embodiment of the present invention. Figure 2 A three-dimensional image adapter with dual-lens synchronous focusing according to an embodiment of the present disclosure is shown. Figure 1 and Figure 2 As shown, the dual-lens synchronous adjustment mechanism 10 may include a lens unit 100, which may include a first lens group 110 and a second lens group 120. In the present disclosure, the relative positions of the first lens group 110 and the second lens group 120 are configured to be relatively fixed, and before the two lenses are relatively fixed, the imaging parameters of the two lenses are adjusted / configured to be consistent or identical.

[0075] The first lens group 110 and the second lens group 120 can each be composed of multiple optical lenses. The optical design system parameters, parameter structure, etc. of the first lens group 110 and the second lens group 120 can be identical. The first lens group 110 and the second lens group 120 can be fixed to the lens connecting block 410. In this way, the lens connecting block 410 can serve as a lens fixing seat. The first lens group 110 and the second lens group 120 can be placed horizontally side by side on the lens connecting block 410 to image the same observation object.

[0076] In the present disclosure, one of the first lens group 110 and the second lens group 120 can be first set on the lens connection block 410, and there is no order requirement for the setting of the two. The following will be explained by first setting the first lens group 110 as an example. The first lens group 110 is set on the lens connection block 410, and the parameters of the first lens group 110 are calibrated and the first lens group 110 is fixed to the lens connection block 410. Then, the second lens group 120 is positioned on the lens connection block 410. The second lens group 120 can be set so that its optical axis is parallel to the optical axis of the first lens group 110 and is in the same horizontal plane. After the second lens group 120 is positioned on the lens connection block 410, it can be adjusted according to the optical calibration of the first lens group 110. For example, for a first lens group 110 and a second lens group 120 having identical optical design parameters, slight optical differences may exist during their manufacturing process. Therefore, fine-tuning of the second lens group 120 can be performed. For example, after the second lens group 120 is positioned on the lens connection block 410, the front-back position of the second lens group 120 can be adjusted using a fine-tuning unit, and parameter calibration of the second lens group 120 can be performed until the imaging parameters of the second lens group 120 are consistent with those of the first lens group 110. The second lens group 120 can then be secured to the lens connection block 410 using connection block screws 415, such as fixing screws. This ensures that the positions of the first lens group 110 and the second lens group 120 are relatively fixed.

[0077] It should be noted that although the above steps describe setting up the first lens group 110 and the second lens group 120, it is also possible to first set up the first lens group 110 and then perform parameter calibration, and then set up the second lens group 120 after the parameter calibration of the first lens group 110 is completed. Therefore, the scope of the present application is not limited to the order of setting up and calibrating the first lens group 110 and calibrating and setting up the second lens group 120.

[0078] Alternatively, after calibrating the second lens group 120 until its imaging parameters are consistent with those of the first lens group 110, the stereo matching results of the two lens groups can be verified. If the match is satisfactory, the second lens group 120 can be fixed to the lens connection block.

[0079] Alternatively, a dual-lens synchronously focused 3D image adapter may include a lens barrel portion 600, wherein the lens barrel portion 600 may include a first lens barrel 610 and a second lens barrel 620. The first lens barrel 610 and the second lens barrel 620 are fixed to the adapter base 500 or integrally formed with the base 500, and are respectively used to accommodate the first lens group 110 and the second lens group 120. The first lens group 110 is provided with a first translation guide 111, and the first lens barrel 610 is provided with a first translation guide slot 112. The first translation guide 111 is defined in the first translation guide slot 112 to achieve translational orientation of the first lens group 110 in the first lens barrel 610. The second lens group 120 is provided with a second translation guide 121, and the second lens barrel 620 is provided with a second translation guide slot 122. The second translation guide 121 is defined in the second translation guide slot 122 to achieve translational orientation of the second lens group 120 in the second lens barrel 620. In the present disclosure, the first translation directing member 111 and the second translation directing member 121 may be in the form of translation directing screws.

[0080] Furthermore, the dual-lens synchronous focusing 3D image adapter may further include a translation guide block 420, wherein the lens connection block 410 may be mounted to the translation guide block 420 and move along the translation guide block 420, thereby driving the first lens group 110 and the second lens group 120 to perform translational motion. In the present disclosure, after the parameters of the first lens group 110 and the second lens group 120 are adjusted to be consistent and they are fixed to the lens connection block 410, the lens connection block 410 can be connected to the translation guide block 420. The combined components can then be mounted to the lens barrel portion 600.

[0081] The dual-lens synchronously focused 3D image adapter further includes a focus knob 200, which can be controlled to synchronize the movement of the first lens group 110 and the second lens group 120, thereby achieving synchronized focusing of the first lens group 110 and the second lens group 120. The focus knob 200 can be controlled by a user to rotate about the axis of the 3D image adapter, and rotation of the focus knob 200 causes the first lens group 110 and the second lens group 120 to synchronize movement. In the present disclosure, the focus knob 200 can be disposed on the outer periphery of the dual-lens synchronously focused 3D image adapter, so that the user can conveniently rotate the focus knob 200 when using the dual-lens synchronously focused 3D image adapter.

[0082] The dual-lens synchronous focusing three-dimensional image adapter also includes a transmission unit 300, which is used to convert the rotational movement of the focus knob 200 into axial translational movement of the first lens group 110 and the second lens group 120. During the focusing process, the user rotates the focus knob 200, and the transmission unit 300 converts the rotational movement of the focus knob 200 into translational movement of the first lens group 110 and the second lens group 120. In this way, the first lens group 110 and the second lens group 120 are moved synchronously to perform synchronous focusing to obtain a clear three-dimensional image.

[0083] The transmission part 300 may include an internal gear 310 and a lead screw 320. The gear teeth of the internal gear 310 mesh with the gear teeth provided on the inner side of the focusing knob 200, so that when the focusing knob 200 is rotated, the internal gear 310 rotates, the lead screw 320 is provided with a lead screw thread and the internal gear 310 is provided with a sleeve thread, the lead screw thread and the sleeve thread cooperate to convert the rotational motion of the internal gear 310 into an axial motion of the lead screw 320, and the lead screw 320 is fixed to the lens connecting block 410, thereby driving the lens connecting block 410 and the first lens group 110 and the second lens group 120 to perform translational motion through the translational motion of the lead screw 320. Figure 2 As shown, the focusing knob 200 can be an annular structure, and gear teeth can be provided on the inner side of the annular structure, and the internal gear 310 can be placed inside the annular structure, and its gear teeth mesh with the gear teeth of the focusing knob 200. In this way, when the focusing knob 200 is rotated, the internal gear 310 also rotates accordingly. A circular hole can be provided at the center of the internal gear 310, and a threaded sleeve can be provided on the inner side of the circular hole. The screw thread of the lead screw 320 can be screwed onto the threaded sleeve, so that a connection method of the screw thread and the threaded sleeve can be achieved.

[0084] According to a further embodiment of the present disclosure, the dual-lens synchronous focusing 3D image adapter further includes an internal gear fixing portion 330, which is fixed to a base of the adapter. For example, the base may be provided with a fixing surface 520, and the internal gear fixing portion 330 may be fixed to the fixing surface 520. The internal gear fixing portion 330 is used to limit the axial movement of the internal gear 310. Figure 3 FIG. 1 is a schematic diagram showing the internal gear fixing portion 330 accommodating the internal gear 310 .

[0085] After the assembled components are mounted on the lens barrel 600, the lead screw 320 can be installed in the circular hole of the internal gear 310. The internal gear fixing portion 330 is then fixed to the base of the adapter. The hole in the lens connecting block 410 is aligned with the hole in the lead screw 320, and the lens connecting block 410 and the lead screw 320 are fixedly connected together using the connecting block screw 415. Ultimately, the lens connecting block 410 is fixedly connected to the first lens group 110, the second lens group 120, and the translation guide block 420. This establishes a kinematic relationship between the focus knob 200 and the two lenses through the transmission unit 300. During focusing, the user rotates the focus knob, and the transmission unit converts the rotational motion of the focus knob into translational motion of the first and second lens groups. This synchronizes the movement of the first and second lens groups, achieving synchronized focusing and a clear three-dimensional image.

[0086] like Figure 3 As shown, the adapter may include an endoscope holder 700. The endoscope holder 700 is fixed to the first end of the base 500 of the three-dimensional image adapter, and the endoscope push plate 710 is connected to the endoscope holder 700. A transparent window 720 may be provided between the base 500 of the three-dimensional image adapter and the endoscope holder 700, so that a good seal is maintained between the base 500 of the three-dimensional image adapter and the endoscope holder 700. In particular, before the endoscope push plate 710 and the endoscope holder 700 are mounted on the base 500, two transparent windows 720 are pre-installed on the base 500. Figure 4 As shown, the endoscope fixing seat 700 is used to fix the endoscope 2. The connection method between the endoscope fixing seat 700 and the endoscope 2 includes but is not limited to a clamping connection, a knob tightening connection, a threaded fixing connection, etc.

[0087] like Figure 3 As shown, the adapter may include a camera mount 800. The camera mount 800 is fixed to the second end of the base 500 of the 3D image adapter. A sealing member 510 in the form of an elastic sealing ring is provided between the base 500 of the 3D image adapter and the camera mount 800, so as to maintain good sealing between the base 500 of the 3D image adapter and the camera mount 800. Figure 4As shown, the camera mount 800 is used to secure the camera 3. A transparent window 830 is provided between the camera mount 800 and the camera 3 to ensure a good seal between the camera mount 800 and the camera 3. Connection methods between the camera mount 800 and the camera 3 include, but are not limited to, a clamping connection, a knob-tightening connection, a locking pin connection, and a threaded connection. Preferably, the locking pin connection includes: a camera locking pin 810 provided on the camera mount 800, and a camera mount cover 820 fixed to the camera mount 800 or integrally formed therewith. The camera 3 is fixedly connected to the camera mount 800 via the camera locking pin 810 and the camera mount cover 820.

[0088] When fixing the camera mount 800 to the base 500, the seal 510 can be placed on the base 500, and then the camera mount 800 can be fixed to the base 500, so that the seal 510 can be clamped between the camera mount 800 and the base 500. Then, the camera locking pin 810 and the camera mount cover 820 are fixed to the camera mount 800.

[0089] According to a further embodiment of the present disclosure, an endoscope system is also provided. Figure 4 As shown, the endoscope system may include the 3D image adapter 1, the endoscope 2, and the camera 3 described above. The endoscope 2 may be fixedly connected to the endoscope mounting base 700 of the 3D image adapter 1, and the camera 3 may be fixedly connected to the camera mounting base 800 of the 3D image adapter 1. After these three components are fixedly connected, they form an endoscope system. End users, such as doctors, can use the endoscope system and control the focus knob to focus on the object being observed, thereby obtaining a clear 2D image through the first lens group 110 and the second lens group 120. The camera 3 then synthesizes a 3D image based on the 2D images from the two lens groups, thereby achieving clear imaging.

[0090] like Figure 5 As shown, the present disclosure can simultaneously achieve the following technical goals: synchronize the axial translation of the two sets of lenses; the user (doctor) adjusts the focus by rotating the knob, and the rotary motion facilitates precise manual control; the increase or decrease in the amplitude of the rotary motion of the focusing knob does not bring about changes in the product size as much as possible, that is, only the internal parts are changed without changing the external size of the product to meet the operating habits of different doctors; the two sets of lenses are always in a sealed cavity, always isolated from the outside world and dust-proof.

[0091] In summary, in order to solve the problems in the prior art that the 2D endoscopic imaging system can only obtain two-dimensional images and the two optical lenses of the 3D endoscope system are fixed and it is difficult to obtain the best image clarity, the present disclosure provides a dual-lens synchronous adjustment mechanism for a three-dimensional image adapter, which can synchronize the focusing process of the dual lenses to achieve the effect of clear image, and can well solve various problems of the prior art solutions such as the inability to focus during clinical use.

[0092] In the technical solution disclosed in the present invention, a focusing knob is provided on the outside and an internal gear is provided on the inside, and the internal gear is engaged with the focusing knob, so that the rotational motion of the focusing knob can be transmitted, and then a transmission part such as a lead screw and a thread sleeve structure is provided to convert the rotational motion into axial movement, and the two groups of lenses move axially at the same time. In addition, an elastic part can be provided when the two groups of lenses move axially, and the elastic part can elastically act with the two groups of lenses, so that the gap between the axial movements of the two groups of lenses can be eliminated, and the dual-lens synchronous adjustment mechanism in the above method can be realized through a reasonable component design scheme. In the specific embodiment of the dual-lens synchronous adjustment mechanism disclosed in the present invention, gear meshing and a lead screw and a thread sleeve are provided to realize the conversion of rotational motion into linear motion, so that dual-lens synchronous focusing can be realized, wherein an elastic part can also be provided to ensure the smooth and continuous focusing process, which has an excellent sense of control in clinical use, and the image clarity adjustment is continuous and smooth, and the doctor has a good control over the image clarity.

[0093] The present invention uses a dual-lens synchronous adjustment mechanism in a three-dimensional image adapter to design a variety of motion transmissions and implement motion transmission through appropriate parts. The general principle of the above transmission method is as follows: first, the dual lenses are fixed on the lens fixing seat at the same time. If there is a need for initial calibration of the lenses, the lens fixing seat should have a structure for eliminating the axial deviation of the two groups of lenses. The lens fixing seat is connected to the lead screw, and the lead screw performs axial translation motion synchronously. The lead screw is connected to the internal gear through the lead screw sleeve, and the rotational motion of the internal gear is converted into axial translation of the lead screw. The internal gear is engaged with the focusing knob gear, and the rotation of the focusing knob drives the rotation of the internal gear. At this point, the motion relationship between the focusing knob and the dual-group lens is established. In addition to satisfying the key motion relationship, a rubber sealing ring is designed to achieve constant sealing of the dual-group lens. The product has sealing properties and has a wide range of application scenarios.

[0094] In specific embodiments, the combination of gear meshing and a leadscrew and sleeve allows for stepless matching of the knob's rotational amplitude with the linear motion amplitude of the dual lenses. By adjusting the module of the internal gear's teeth and the focusing knob's teeth, and / or the pitch of the leadscrew's threads and the sleeve's threads, the focusing knob's rotational amplitude can be matched with the translational amplitude of the first and second lens groups. This allows for matching to meet diverse needs and satisfy different physicians' operating habits.

[0095] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0096] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0097] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A dual-lens synchronous focusing 3D image adapter, characterized in that: include: A lens unit, comprising a first lens group and a second lens group with relatively fixed positions and consistent imaging parameters; The first lens barrel and the second lens barrel are fixed to the base of the adapter or are integrally formed with the base, and respectively accommodate the first lens group and the second lens group. The first lens group is provided with a first translation orientation member, and the first lens barrel is provided with a first translation orientation slot. The first translation orientation member is confined in the first translation orientation slot to achieve translation orientation of the first lens group. The second lens group is provided with a second translation orientation member, the second lens barrel is provided with a second translation orientation slot, and the second translation orientation member is confined in the second translation orientation slot to achieve translation orientation of the second lens group; a focus knob, controlled by a user to rotate about an axis of the adapter to cause the first lens group and the second lens group to move synchronously; a transmission portion, which converts the rotational motion of the focus knob into translational motion of the first lens group and the second lens group along the axial direction, so that the first lens group and the second lens group are synchronously moved to perform synchronous focusing to obtain a clear three-dimensional image, the transmission portion including an internal gear and a lead screw, the gear teeth of the internal gear meshing with the gear teeth provided on the inner side of the focus knob, so that when the focus knob is rotated, the internal gear rotates, the lead screw is provided with a lead screw thread and the internal gear is provided with a sleeve thread, the lead screw thread and the sleeve thread cooperate to convert the rotational motion of the internal gear into axial motion of the lead screw; An internal gear fixing portion, fixed to a fixing surface provided on a base of the adapter, to limit the internal gear from moving in the axial direction; The lens fixing seat and the translation guide block, the first group of lenses and the second group of lenses with the same parameter debugging are relatively fixed on the lens fixing seat, forming a fixed connection relationship between the lens fixing seat and the first group of lenses, the second group of lenses and the translation guide block, the lens fixing seat is installed to the translation guide block and moves along the translation guide block, driving the first group of lenses and the second group of lenses to move translationally, the screw is fixed to the lens fixing seat, and the translation movement of the screw drives the lens fixing seat and the first group of lenses and the second group of lenses to move translationally, the hole of the lens fixing seat is aligned with the hole set on the screw, and the lens fixing seat is fixedly connected to the screw by the connecting block screw.

2. The dual-lens synchronous focusing 3D image adapter according to claim 1, wherein: By adjusting the module of the gear teeth of the internal gear and the gear teeth of the focusing knob, and / or by adjusting the pitch of the screw thread of the screw and the screw thread of the internal gear, the rotational motion amplitude of the focusing knob and the translational motion amplitude of the first group of lenses and the second group of lenses are matched.

3. The dual-lens synchronous focusing 3D image adapter according to claim 1, wherein: Also included is an elastic member, the elastic member being configured to eliminate axial movement gaps during synchronous movement of the first lens group and the second lens group; and / or The invention also comprises a sealing member, which is sleeved on the base of the adapter and seals between the base and the camera seat cover.

4. The dual-lens synchronous focusing 3D image adapter according to any one of claims 1 to 3, wherein: The optical axis of the first group of lenses and the optical axis of the second group of lenses are set to be parallel and in the same horizontal plane, and after the imaging parameters of the first group of lenses are calibrated, the imaging parameters of the second group of lenses are calibrated so that the imaging parameters of the second group of lenses are consistent with the imaging parameters of the first group of lenses, and the first group of lenses and the second group of lenses with consistent imaging parameters are locked to achieve relative fixed positions of the two.

5. The dual-lens synchronous focusing 3D image adapter according to claim 4, wherein: It also includes a fine-tuning component, which is used to fine-tune the second group of lenses so that the imaging parameters of the second group of lenses are consistent with the imaging parameters of the first group of lenses.

6. An endoscope system, characterized in that: include: Endoscope; The three-dimensional image adapter according to any one of claims 1 to 5, wherein the three-dimensional image adapter is fixedly connected to the endoscope via an endoscope fixing seat; as well as A camera is fixedly connected to the camera fixing seat of the three-dimensional image adapter.

Images