CN217659791U

CN217659791U - Imaging module and endoscope

Info

Publication number: CN217659791U
Application number: CN202221260115.0U
Authority: CN
Inventors: 周杨
Original assignee: Changzhou Lianying Zhirong Medical Technology Co ltd
Current assignee: Changzhou Lianying Zhirong Medical Technology Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-28
Anticipated expiration: 2032-05-24

Abstract

The utility model relates to an imaging module, it includes that first fixed mirror group is organized and the removal module. The first fixed lens group comprises a first fixed lens cone and a first fixed lens; the movable lens group comprises a movable lens cone and a movable lens, and the movable lens cone is arranged on one side of the first fixed lens cone along the axial direction of the first fixed lens cone; the first fixed lens barrel is fixedly connected with a first soft magnetic component, and the movable lens barrel is fixedly connected with a first permanent magnet; the first soft magnetic component and the first permanent magnet are oppositely arranged along the axial direction of the movable lens barrel; when the first soft-magnetic component is electrified and generates a magnetic field, the first permanent magnet and the first soft-magnetic component can generate a first magnetic force mutually so as to enable the movable lens barrel to move axially relative to the first fixed lens barrel. When the movable lens barrel moves relative to the first fixed lens barrel, the first soft magnet assembly cannot be subjected to sliding friction force, so that the situations of abrasion, skin breaking and electric leakage are not easy to occur, the using process of the endoscope is safer, and the service life is longer.

Description

Imaging module and endoscope

Technical Field

The utility model relates to an internal diagnostic equipment especially relates to imaging module and endoscope.

Background

In medical diagnosis and treatment, determination of the cause of a disease by inserting an endoscope into the inside of a subject to look directly at the lesion has been widely used. When the endoscope is used, the focal position of the endoscope itself is adjusted to obtain a more precise and clear imaging quality, and at this time, the movable lens barrel needs to move relative to the cylinder wall of the fixed lens barrel, so that the movable lens mounted in the movable lens barrel moves relative to the fixed lens mounted in the fixed lens barrel. In the prior art, a permanent magnet is usually mounted on a movable lens barrel, and an inductance coil is wound around the outer circumference of the movable lens barrel, wherein the inductance coil is fixed relative to a fixed lens barrel. When the inductance coil is electrified and generates a magnetic field, the permanent magnet arranged on the movable lens cone can move under the action of the magnetic field force, and further the movable lens cone can move relative to the cylinder wall of the fixed lens cone. However, in the moving process, because the moving lens barrel and the inductance coil slide relatively, the inductance coil is easy to wear and damage by skin and generate the danger of electric leakage under the long-time use, so that the service life of the endoscope is short.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide an imaging module to when the endoscope is adjusting its focus in the use, the inductance coils easily wear and tear the damage of skin and appear the danger of electric leakage, and then makes the short technical problem of endoscope's life.

An imaging module, comprising: the first fixed lens group comprises a first fixed lens barrel and a first fixed lens arranged in the first fixed lens barrel; the movable lens group comprises a movable lens cone and a movable lens arranged in the movable lens cone, and the movable lens cone is arranged on one side of the first fixed lens cone along the axial direction of the first fixed lens cone; the first fixed lens barrel is fixedly connected with a first soft magnetic component, and the movable lens barrel is fixedly connected with a first permanent magnet; the first soft magnetic component and the first permanent magnet are oppositely arranged along the axial direction of the movable lens cone; when the first soft-magnetic component is electrified and generates a magnetic field, the first permanent magnet and the first soft-magnetic component can generate a first magnetic field force so that the movable lens barrel can axially move relative to the first fixed lens barrel.

In one embodiment, the first soft-magnetic component comprises a first soft-magnetic body and a first inductive coil; the first soft magnet is fixedly connected to one end, close to the movable lens group, of the first fixed lens barrel, and the first inductance coil is sleeved on the periphery of the first soft magnet and is fixedly connected with the first soft magnet; the first permanent magnet is fixedly connected to one end of the movable lens cone, which is close to the first fixed lens group.

In one embodiment, the optical lens module further includes a second fixed lens group, the second fixed lens group includes a second fixed lens barrel and a second fixed lens installed inside the second fixed lens barrel, the second fixed lens barrel is located on a side of the movable lens barrel away from the first fixed lens barrel, and the movable lens barrel can move axially relative to the second fixed lens barrel.

In one embodiment, the imaging module further comprises a second soft-magnetic component and a second permanent magnet; the second soft magnetic component and the second permanent magnet are oppositely arranged along the axial direction of the movable lens cone, the second soft magnetic component is fixedly connected to one end, close to the movable lens group, of the second fixed lens cone, and the second permanent magnet is fixedly connected to one end, close to the second fixed lens group, of the movable lens cone; the magnetic pole of the second permanent magnet is opposite to that of the first permanent magnet; when the second soft-magnetic component is electrified and generates a magnetic field, the second permanent magnet and the second soft-magnetic component can generate a second magnetic force with each other, so that the movable lens barrel moves axially relative to the second fixed lens barrel.

In one embodiment, the second soft-magnetic component comprises a second soft-magnetic body and a second inductive coil; the second soft magnet is fixedly connected with the second fixed lens cone, the second inductance coil is sleeved on the periphery of the second soft magnet and fixedly connected with the second soft magnet, and the winding direction of the second inductance coil is opposite to that of the first inductance coil.

In one embodiment, the device further comprises a mounting shell with a hollow interior; the first fixed lens barrel and the second fixed lens barrel are fixedly connected in the mounting shell, and the movable lens barrel is accommodated in the mounting shell and is in sliding connection with the wall of the mounting shell.

In one embodiment, one of the movable lens barrel and the mounting shell is provided with a sliding projection, and the other is provided with a sliding groove extending along the axial direction of the movable lens barrel, and the sliding projection is in guiding fit with the sliding groove.

In one embodiment, a part of the barrel wall of the movable barrel is recessed inward along a radial direction of one side of the movable barrel close to the mounting shell and is provided with a non-contact part, and the non-contact part is arranged at a distance from the wall of the mounting shell.

In one of the embodiments, further comprising a thermally conductive layer; the heat-conducting layer is arranged between the first inductance coil and the installation shell, and between the second inductance coil and the installation shell.

The utility model also provides an endoscope can solve above-mentioned at least one technical problem.

The utility model provides a pair of endoscope, it includes foretell imaging module, still includes the image sensor subassembly, the image sensor subassembly connect in imaging module, the image sensor subassembly is used for passing imaging module's light signal conversion is the signal of telecommunication.

The utility model has the advantages that:

the utility model provides a pair of imaging module installs it on the endoscope. When the endoscope needs to adjust the focal position of the endoscope, the first soft magnetic component is electrified and generates a magnetic field, and the first permanent magnet and the first soft magnetic component can generate a first magnetic force to drive the movable lens cone to move in a coaxial state relative to the first fixed lens cone, so that the focusing operation of the endoscope is realized. Because the first soft magnetic body component is fixedly connected to the first fixed lens barrel, the first permanent magnet is fixedly connected to the movable lens barrel, and the first soft magnetic body component and the first permanent magnet are oppositely arranged along the axial direction of the movable lens barrel, when the movable lens barrel moves close to or away from the first fixed lens barrel, the first soft magnetic body component cannot be subjected to sliding friction force, so that the situations of abrasion, skin breaking and electric leakage are not easy to occur, the using process of the endoscope is safer, and the service life is longer.

Drawings

Fig. 1 is a schematic view illustrating a first position of an imaging module according to an embodiment of the present invention mounted on an endoscope;

FIG. 2 is a schematic view of the imaging module of FIG. 1 in a second position mounted on an endoscope;

FIG. 3 is a schematic view of the first fixed mirror group and the first soft magnetic component of the imaging module shown in FIG. 1;

fig. 4 is a schematic view of the movable mirror group of the imaging module shown in fig. 1, which is provided with a first permanent magnet and a second permanent magnet;

FIG. 5 is a schematic view of the second fixed mirror group and the second soft magnetic component of the imaging module shown in FIG. 1;

FIG. 6 is a schematic view of a movable lens barrel of the imaging module shown in FIG. 1;

fig. 7 is a schematic view of a mounting case of the imaging module shown in fig. 1.

Reference numerals: 100-a first fixed mirror group; 110-a first fixed barrel; 120-a first fixed lens; 200-moving the lens group; 210-moving the lens barrel; 211-a non-contact portion; 220-moving the lens; 300-a second fixed mirror group; 310-a second fixed barrel; 320-a second fixed lens; 330-space ring; 340-a first aperture; 350-first flat glass; 360-a second aperture; 370-a second flat glass; 400-a first soft-magnetic component; 410-a first soft-magnetic body; 420-a first inductor winding; 430-a first buffer; 500-a second soft-magnetic component; 510-a second soft-magnetic body; 520-a second inductor winding; 530-a second buffer; 610-a first permanent magnet; 620-a second permanent magnet; 710-sliding bumps; 720-sliding groove; 800-mounting a housing; 810-a wiring trough; 900-image sensor assembly.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1-2, fig. 1 is a schematic view illustrating a first position of an imaging module according to an embodiment of the present invention mounted on an endoscope; FIG. 2 is a schematic view of the imaging module of FIG. 1 mounted on an endoscope in a second position; an embodiment of the utility model provides an imaging module, it includes first fixed mirror group 100 and removes the module. The first fixed lens group 100 includes a first fixed lens barrel 110 and a first fixed lens 120 mounted inside the first fixed lens barrel 110; the movable lens group 200 includes a movable lens barrel 210 and a movable lens 220 mounted inside the movable lens barrel 210, the movable lens barrel 210 is disposed on one side of the first fixed lens barrel 110 along the axial direction thereof; the first fixed lens barrel 110 is fixedly connected with a first soft-magnetic component 400, and the movable lens barrel 210 is fixedly connected with a first permanent magnet 610; the first soft-magnetic component 400 is arranged opposite to the first permanent magnet 610 in the axial direction of the moving barrel 210; when the first soft-magnetic body assembly 400 is powered on and generates a magnetic field, the first permanent magnet 610 and the first soft-magnetic body assembly 400 can generate a first magnetic force to drive the movable lens barrel 210 to move closer to or away from the first fixed lens barrel 110 in a coaxial state.

Will the utility model provides an imaging module installs on the endoscope. When the endoscope needs to adjust the focal position of the endoscope, the first soft-magnetic component 400 is powered on and generates a magnetic field, and the first permanent magnet 610 and the first soft-magnetic component 400 can generate a first magnetic force to drive the movable lens barrel 210 to move in a coaxial state relative to the first fixed lens barrel 110, so that the focusing operation of the endoscope is realized. Because the first soft-magnetic body assembly 400 is fixedly connected to the first fixed lens barrel 110, the first permanent magnet 610 is fixedly connected to the movable lens barrel 210, and the first soft-magnetic body assembly 400 and the first permanent magnet 610 are oppositely arranged along the axial direction of the movable lens barrel 210, when the movable lens barrel 210 moves closer to or away from the first fixed lens barrel 110, the first soft-magnetic body assembly 400 does not receive sliding friction force, so that the situations of abrasion, skin breaking and electric leakage are not easy to occur, the using process of the endoscope is safer, and the service life is longer.

In one embodiment, the first fixed barrel 110 is mounted with the first soft-magnetic assembly 400, and the moving barrel 210 is mounted with the first permanent magnet 610. When the first soft-magnetic component 400 is powered on and generates a magnetic field, the first permanent magnet 610 receives the first magnetic attraction force of the first soft-magnetic component 400, and further drives the movable lens barrel 210 to move close to the first fixed lens barrel 110 in a coaxial state; when the first soft magnetic component 400 is supplied with a current in a reverse direction to generate a magnetic field in the reverse direction, the first permanent magnet 610 receives the first magnetic repulsion of the first soft magnetic component 400, and then drives the movable lens barrel 210 to move away from the first fixed lens barrel 110 in a coaxial state, so that the distance between the movable lens 220 and the first fixed lens 120 changes, and the focusing function of the imaging module of the endoscope is completed. In the process, when the movable lens barrel 210 moves relative to the first fixed lens barrel 110, the first soft-magnetic body assembly 400 does not move relatively all the time, so that the first soft-magnetic body assembly 400 is prevented from being worn, broken and leaked as far as possible, the endoscope is safer in use, and the service life is longer.

Referring to fig. 1 and 2, in one specific embodiment, the position of the movable barrel 210 moving relative to the first fixed barrel 110 has a first position and a second position. When the first permanent magnet 610 is subjected to the first magnetic attraction of the first soft-magnetic component 400, the movable barrel 210 moves closer to the first fixed barrel 110 and moves to the first position shown in fig. 1; when the first permanent magnet 610 receives the first magnetic repulsive force of the first soft-magnetic component 400, the movable barrel 210 moves away from the first fixed barrel 110 and moves to the second position as shown in fig. 2, so that the endoscope is in a bifocal mode.

It should be noted that, when the movable lens barrel 210 moves closer to the first fixed lens barrel 110, the movable lens barrel 210 abuts against the sidewall of the first soft-magnetic body assembly 400, so that the movable lens barrel 210 can be limited by the sidewall of the first soft-magnetic body assembly 400 when moving to the first position relative to the first fixed lens barrel 110.

In another specific embodiment, the imaging module includes a position sensor and a controller, the position sensor can detect the position of the movable lens barrel 210 relative to the first fixed lens barrel 110, the controller can control the first soft-magnetic body assembly 400 through the position information detected by the position sensor, and further can control the magnitude and direction of the first magnetic field force, so that the movable lens barrel 210 can be stopped in time when moving relative to the first fixed lens barrel 110, and the position of the movable lens barrel 210 relative to the first fixed lens barrel 110 can be continuously and variably adjusted, so that the endoscope at this time is in a continuous zoom mode.

Referring to fig. 3, in one specific embodiment, the number of the first fixed lenses 120 is two, two first fixed lenses 120 are disposed at intervals along the axial direction of the first fixed lens barrel 110, and the light in the first fixed lens barrel 110 is focused and transmitted through the two first fixed lenses 120. Of course, in other embodiments, the number of the first fixed lenses 120 can be one, three, etc., which can be adjusted adaptively according to the needs. In one specific embodiment, the first fixed lens 120 is a lens, and it should be noted that the parameters of the two first fixed lenses 120 may be the same or different, and are not limited thereto.

It should be noted that the imaging module provided in the embodiments of the present invention may also be installed on other optical instruments, such as a camera and a telescope, which is not limited thereto.

The following describes the structure of the imaging module in detail. Referring to FIGS. 3-7, FIG. 3 is a schematic view showing the installation of the first fixed mirror group 100 and the first soft magnetic component 400 of the imaging module shown in FIG. 1;

fig. 4 is a schematic diagram illustrating the movable mirror group 200 of the imaging module shown in fig. 1 with a first permanent magnet 610 and a second permanent magnet 620 mounted thereon; FIG. 5 shows a schematic mounting diagram of the second fixed mirror group 300 and the second soft-magnetic component 500 of the imaging module shown in FIG. 1; FIG. 6 shows a schematic view of the moving barrel 210 of the imaging module shown in FIG. 1; fig. 7 shows a schematic view of the mounting case 800 of the imaging module shown in fig. 1.

Referring to fig. 1-3, a first soft magnet assembly 400 of an imaging module according to an embodiment of the present invention includes a first soft magnet 410 and a first inductance coil 420; the first soft magnet 410 is fixedly connected to one side of the first fixed lens barrel 110 close to the movable lens group 200, the first inductance coil 420 is sleeved on the periphery of the first soft magnet 410 and is fixedly connected therewith, and the first permanent magnet 610 is fixedly connected to one side of the movable lens barrel 210 close to the first fixed lens group 100. By passing currents in different directions to the first inductance coil 420, magnetic fields in different directions are generated inside the coil, so that the magnetized magnetic pole directions of the first soft-magnetic body 410 are different, and finally, a first magnetic attraction force or a first magnetic repulsion force is generated between the first soft-magnetic body 410 and the first permanent magnet 610. In one specific embodiment, the first soft-magnetic body 410 is made of an iron-silicon alloy.

Referring to fig. 1 and fig. 2, the first soft magnetic body 410 and the first permanent magnet 610 of the imaging module according to an embodiment of the present invention are oppositely disposed along the axial direction of the movable lens barrel 210, and the projection area of the first soft magnetic body 410 on the first plane covers the projection area of the first permanent magnet 610 on the first plane; wherein the first plane is perpendicular to the axial direction of the moving barrel 210. Because the first soft-magnetic body 410 and the first permanent magnet 610 are oppositely arranged along the axial direction of the moving lens barrel, and the projection area of the first soft-magnetic body 410 on the first plane covers the projection area of the first permanent magnet 610 on the first plane, the areas where the first soft-magnetic body 410 is magnetized and then magnetically attracted to or repelled from the first permanent magnet 610 are larger, so that when the first permanent magnet 610 moves relative to the first soft-magnetic body 410, the first magnetic force received by the first permanent magnet can be more balanced, and the moving process is more stable.

In one particular embodiment, the first soft magnet 410 and the first permanent magnet 610 are each a continuous ring structure. Of course, in other embodiments, the first soft magnet 410 and the first permanent magnet 610 may also be a multi-segment discontinuous ring structure, or a structure in which a plurality of sub-blocks are arranged at intervals along the circumferential direction of the moving barrel 210, which is not limited to this.

Referring to fig. 1, fig. 2 and fig. 3, the first soft magnetic body assembly 400 of the imaging module according to an embodiment of the present invention further includes a first buffer member 430, the first buffer member 430 is installed at one side of the first soft magnetic body 410 close to the first permanent magnet 610, when the first permanent magnet 610 receives the first magnetic force applied by the first soft magnetic body 410 and moves close to the first fixed lens barrel 110, the first buffer member 430 can reduce the impact force of the first permanent magnet 610 on the first soft magnetic body 410, so that the first soft magnetic body 410 is not easily deformed under the action of a large impact force. Of course, in other embodiments, the first buffer member 430 may be optionally removed if the impact force of the first permanent magnet 610 to the first soft magnet 410 is small.

In one specific embodiment, the first buffering member 430 is a cushion made of an elastic material, and the cross section of the cushion along the radial direction of the movable lens barrel 210 is circular or multi-stage discontinuous circular, and it should be noted that the shape of the first buffering member 430 is not limited.

Referring to fig. 1-2 and 5, the imaging module of an embodiment of the present invention further includes a second fixed lens group 300, the second fixed lens group 300 includes a second fixed lens barrel 310 and a second fixed lens 320 installed inside the second fixed lens barrel 310, the second fixed lens barrel 310 is disposed on a side of the movable lens barrel 210 departing from the first fixed lens barrel 110, and the movable lens barrel 210 can move axially relative to the second fixed lens barrel 310. By disposing the second fixed mirror group 300, the first fixed mirror 120, the movable mirror 220 and the second fixed mirror 320 focus and transmit light in the imaging module together.

Referring to fig. 5, in one specific embodiment, the number of the second fixed lenses 320 is three, three second fixed lenses 320 are arranged at intervals along the axial direction of the second fixed barrel 310, and the light in the second fixed barrel 310 is focused and transmitted by the three second fixed lenses 320. Of course, in other embodiments, the number of the second fixed lenses 320 can also be one, two, or four, etc., which can be adjusted adaptively according to the needs. In one specific embodiment, the second fixed mirror 320 is a lens, and it should be noted that the parameters of the three second fixed mirror 320 may be the same or different, and are not limited thereto.

Referring to fig. 5, a second fixed lens group 300 of an imaging module according to an embodiment of the present invention further includes a spacer 330, and the spacer 330 is installed between two second fixed lenses 320. By providing the spacer 330, the mounting position of the second fixed lens 320 is more accurate.

Referring to fig. 5, a second fixed lens group 300 of an imaging module according to an embodiment of the present invention further includes a plate glass and an aperture. Specifically, the plate glass includes a first plate glass 350 and a second plate glass 370, and the aperture includes a first aperture 340 and a second aperture 360. The first diaphragm 340, the first plate glass 350, the second diaphragm 360, and the second plate glass 370 are disposed at intervals in the axial direction of the second fixed barrel 310. The plate glass is used for transmitting light, and the diaphragm is used for adjusting the brightness of the light transmitted in the second fixed lens barrel 310.

Referring to fig. 4 and 5, an imaging module according to an embodiment of the present invention further includes a second soft magnetic component 500 and a second permanent magnet 620; the second soft magnetic component 500 and the second permanent magnet 620 are oppositely arranged along the axial direction of the movable lens barrel 210, the second soft magnetic component 500 is fixedly connected to one end of the second fixed lens barrel 310 close to the movable lens group 200, and the second permanent magnet 620 is fixedly connected to one end of the movable lens barrel 210 close to the second fixed lens group 300; the magnetic pole of the second permanent magnet 620 is opposite to the magnetic pole of the first permanent magnet 610; when the second soft-magnetic assembly 500 is energized and generates a magnetic field, the second permanent magnet 620 and the second soft-magnetic assembly 500 can generate a second magnetic force with each other to cause the moving barrel 210 to move axially with respect to the second fixed barrel 310.

When the focus of the imaging module of the endoscope needs to be adjusted, at this time, the first soft-magnetic component 400 and the second soft-magnetic component 500 are both powered on and generate a magnetic field, so that the first permanent magnet 610 is subjected to a first magnetic force, the second permanent magnet 620 is subjected to a second magnetic force, and under the combined action of the first magnetic force and the second magnetic force, the movable lens group 200 axially moves relative to the first fixed lens barrel 110 and the second fixed lens barrel 310, so that the distances among the first fixed lens 120, the movable lens 220 and the second fixed lens 320 are changed, thereby realizing the adjustment of the position of the focus of the imaging module. It should be noted that, when the endoscope is a bifocal endoscope, the movable lens group 200 can reach the two preset focal points more efficiently and quickly under the action of the magnetic field force simultaneously applied to the first soft-magnetic assembly 400 and the second soft-magnetic assembly 500.

In one specific embodiment, the magnetic field generated by the first soft-magnetic component 400 is in the opposite direction to the magnetic field generated by the second soft-magnetic component 500. Because the magnetic poles of the first permanent magnet 610 and the second permanent magnet 620 are opposite, the direction of a first magnetic field force applied to the first permanent magnet 610 is the same as the direction of a second magnetic field force applied to the second permanent magnet 620, so that one end of the movable lens barrel 210 is subjected to an electromagnetic pulling force, and the other end of the movable lens barrel 210 is subjected to an electromagnetic pushing force, and finally, the movable lens barrel 210 moves closer to or away from the first fixed lens barrel 110 or the second fixed lens barrel 310 in a coaxial state under the action of the first magnetic field force and the second magnetic field force in the same directions.

Specifically, by setting the winding direction of the inductor coil in the first soft-magnetic component 400 and the winding direction of the inductor coil in the second soft-magnetic component 500 in opposite manners, the magnetic fields generated by the first soft-magnetic component 400 and the second soft-magnetic component 500 can be made to be opposite in direction when the same current is applied. When the moving barrel 210 moves in the horizontal direction in fig. 1 or fig. 2, it changes the moving direction of the moving barrel 210, whether it is horizontal left or horizontal right, by changing the direction of the current passed in the first soft-magnetic assembly 400 and the second soft-magnetic assembly 500, for example, in fig. 1, the direction of the current passed is from left to right, or the direction of the current passed is from right to left. Of course, the winding direction of the inductor in the first soft-magnetic assembly 400 and the winding direction of the inductor in the second soft-magnetic assembly 500 may be set in the same manner, which may cause the magnetic fields generated by the first soft-magnetic assembly 400 and the second soft-magnetic assembly 500 to be opposite in direction when opposite currents are applied.

In another specific embodiment thereof, the magnetic field generated by the first soft-magnetic component 400 is in the same direction as the magnetic field generated by the second soft-magnetic component 500. Because the magnetic poles of the first permanent magnet 610 and the second permanent magnet 620 are opposite, the direction of a first magnetic field force applied to the first permanent magnet 610 is opposite to that of a second magnetic field force applied to the second permanent magnet 620, so that when the movable lens barrel 210 needs to move along the horizontal direction in fig. 1 or fig. 2, the magnitude of the first magnetic field force and the magnitude of the second magnetic field force are different by changing the variation of the current passing through the first soft-magnetic assembly 400 and the second soft-magnetic assembly 500 per unit time, and when the first magnetic field force is greater than the second magnetic field force, the movable lens barrel 210 moves closer to the first fixed lens barrel 110; when the first magnetic force is smaller than the second magnetic force, the movable barrel 210 moves away from the first fixed barrel 110.

By fixedly connecting the second soft-magnetic component 500 to the second fixed barrel 310 and installing the second permanent magnet 620 on the movable barrel 210, when the movable barrel 210 moves relative to the second fixed barrel 310, the second soft-magnetic component 500 does not move relatively all the time, thereby avoiding the second soft-magnetic component 500 from wearing, peeling and leaking electricity as much as possible, ensuring safer use process of the endoscope and longer service life.

Referring to fig. 1, fig. 2 and fig. 5, a second soft magnet assembly 500 of the imaging module according to an embodiment of the present invention includes a second soft magnet 510 and a second inductance coil 520; the second soft magnet 510 is fixedly connected to the second fixed barrel 310, the second inductor 520 is sleeved on the periphery of the second soft magnet 510 and is fixedly connected to the second soft magnet, and the winding direction of the second inductor 520 is opposite to the winding direction of the first inductor 420.

Since the winding direction of the second inductance coil 520 is opposite to the winding direction of the first inductance coil 420, when the soft-magnetic body assembly 400 and the second soft-magnetic body assembly 500 are energized with current in the same direction, the first inductance coil 420 is in a clockwise winding direction, and the second inductance coil 520 is in a counterclockwise winding direction; or the first inductor 420 is wound counterclockwise and the second inductor 520 is wound clockwise. At this time, it is determined that the direction of the magnetic field generated by the second inductor 520 is opposite to the direction of the magnetic field generated by the first inductor 420 according to the right-hand screw rule. And because the magnetic poles of the first permanent magnet 610 and the second permanent magnet 620 are opposite, the direction of a first magnetic field force borne by the first permanent magnet 610 is the same as that of a second magnetic field force borne by the second permanent magnet 620, so that one end of the movable lens barrel 210 is under electromagnetic tension, and the other end of the movable lens barrel is under electromagnetic thrust, and the movable lens barrel 210 is always under stable thrust in the same direction in the moving process, and finally, when the movable lens barrel 210 moves closer to or away from the first fixed lens barrel 110 or the second fixed lens barrel 310 under the action of the first magnetic field force and the second magnetic field force in the same direction, the whole moving process is more efficient and faster.

It should be noted that, when the movable lens barrel 210 moves to the first position or the second position shown in fig. 1 or fig. 2 relative to the first fixed lens barrel 110, the movable lens barrel 210 still can receive the first magnetic force and the second magnetic force, so that the movable lens barrel 210 is not easily moved after moving to the first position or the second position, and further the focusing accuracy of the endoscope is high.

Referring to fig. 1 and fig. 2, the second soft magnet 510 and the second permanent magnet 620 of the imaging module according to an embodiment of the present invention are oppositely disposed along the axial direction of the movable lens barrel 210, and a projection area of the second soft magnet 510 on a second plane covers a projection area of the second permanent magnet 620 on the second plane; wherein the second plane is perpendicular to the axial direction of the moving barrel 210. Because the second soft magnet 510 and the second permanent magnet 620 are oppositely arranged along the axial direction of the movable barrel 210, and the projection area of the second soft magnet 510 on the second plane covers the projection area of the second permanent magnet 620 on the second plane, the area where the second permanent magnet 620 is magnetically attracted or repelled to each other after the second soft magnet 510 is magnetized is larger, and thus when the second permanent magnet 620 moves relative to the second soft magnet 510, the second magnetic force received by the second permanent magnet can be more balanced, and the moving process is more stable.

In one particular embodiment, the second soft magnet 510 and the second permanent magnet 620 are each a continuous ring structure. Of course, in other embodiments, the second soft magnet 510 and the second permanent magnet 620 may also be a multi-segment discontinuous ring structure, or a structure in which a plurality of sub-blocks are arranged at intervals along the circumferential direction of the moving barrel 210, which is not limited to this.

Referring to fig. 1, fig. 2 and fig. 5, the second soft magnetic component 500 of the imaging module according to an embodiment of the present invention further includes a second buffer 530, the second buffer 530 is installed on one side of the second soft magnetic component 510 close to the second permanent magnet 620, and when the second permanent magnet 620 receives the second magnetic force applied by the second soft magnetic component 510 and moves close to the second fixed barrel 310, the second buffer 530 can reduce the impact force of the second permanent magnet 620 on the second soft magnetic component 510, so that the second soft magnetic component 510 is not easily deformed under the action of a large impact force. Of course, in other embodiments, the second buffers 530 may be optionally omitted if the impact force of the second permanent magnets 620 on the second soft-magnetic body 510 is small.

In one specific embodiment, the second buffer 530 is a cushion made of an elastic material, and the cross section of the cushion along the radial direction of the moving lens barrel 210 is circular or multi-section discontinuous circular, and it should be noted that the shape of the second buffer 530 is not limited.

Referring to fig. 1, 2 and 7, an imaging module according to an embodiment of the present invention further includes a hollow mounting case 800; the first fixed lens barrel 110 and the second fixed lens barrel 310 are fixedly connected in the mounting case 800, and the movable lens barrel 210 is accommodated in the mounting case 800 and slidably connected with a wall of the mounting case 800. The first fixed lens barrel 110 and the second fixed lens barrel 310 are fixedly connected to the mounting shell 800 and are matched with the wall of the mounting shell, so that the first fixed lens barrel 110 and the second fixed lens barrel 310 are relatively fixed, and the movable lens barrel 210 slides relative to the wall of the mounting shell 800, so that the first fixed lens 120, the movable lens 220 and the second fixed lens 320 can be coaxial, and the distance between the first fixed lens 120, the movable lens 220 and the second fixed lens 320 is changed, thereby adjusting the position of the focus of the imaging module of the endoscope. Meanwhile, the mounting case 800 can form a relatively closed space to prevent impurities from entering the lens barrel, thereby protecting the first fixed lens 120, the movable lens 220, and the second fixed lens 320.

Referring to fig. 6 and 7, in an imaging module according to an embodiment of the present invention, one of the movable lens barrel 210 and the mounting shell 800 is provided with a sliding protrusion 710, and the other is provided with a sliding groove 720 extending along the axial direction of the movable lens barrel 210, and the sliding protrusion 710 is in guiding fit with the sliding groove 720. Through set up the slip lug 710 at one of them of removal lens cone 210 and installation shell 800, the other sets up slip recess 720, slip lug 710 and the cooperation of sliding recess 720 direction, and then make removal lens cone 210 do when being close to the motion or keeping away from the motion relative first fixed lens cone 110, it is along self axial back-and-forth movement all the time, therefore removal lens cone 210 can not take place to rotate and then produce like the phenomenon of revolving relative first fixed lens cone 110, finally make the imaging effect of endoscope clearer, the quality is better.

In one specific embodiment, the movable barrel 210 is provided with a sliding protrusion, and the mounting case 800 is provided with a sliding groove. In another specific embodiment, the movable barrel 210 is provided with a sliding groove 720, and the mounting case 800 is provided with a sliding protrusion 710.

Referring to fig. 6, a non-contact portion 211 is disposed on a side of a cylinder wall of a partial movable lens barrel 210 of the imaging module near the mounting shell 800, and the non-contact portion 211 and a shell wall of the mounting shell 800 are spaced apart from each other. Since the non-contact portion 211 is disposed on a side of the cylinder wall of the partial movable lens barrel 210 close to the mounting case 800, the movable lens barrel 210 at the non-contact portion 211 does not abut against the wall of the mounting case 800, thereby reducing a contact area between the movable lens barrel 210 and the mounting case 800. When the movable barrel 210 needs to change the distance between the movable barrel 210 and the first fixed barrel 110 and the second fixed barrel 310 and slides relative to the wall of the mounting case 800, the contact area between the movable barrel 210 and the wall of the mounting case is smaller, the sliding friction force applied to the movable barrel 210 is smaller, and the sliding process is smoother.

In one specific embodiment, the movable barrel 210 is generally circular and mates with the wall of the mounting housing 800. The non-contact portion 211 of the movable barrel 210 is planar, and specifically, referring to fig. 6, the wall of the mounting case 800 corresponding to the non-contact portion 211 is arc-shaped, so that a gap is formed between the planar non-contact portion 211 and the wall of the mounting case 800. Specifically, the non-contact portion 211 having a planar shape is formed by milling or grinding a flat surface on the outer wall surface of the movable barrel 210.

In another specific embodiment, the movable barrel 210 is recessed inward in a radial direction thereof to form a groove structure, which is the non-contact portion 211, so that a space is formed between the groove structure and the wall of the mounting case 800. The specific structure of the non-contact portion 211 is not limited, and it is sufficient that a space can be formed between the non-contact portion and the wall of the mounting case 800 so that the contact area between the movable lens barrel 210 and the wall of the mounting case 800 is reduced.

In one specific embodiment, the number of the non-contact portions 211 is four, and the four non-contact portions 211 are arranged at intervals in the circumferential direction of the moving lens barrel 210. So that the contact area between the moving lens barrel 210 and the mounting case 800 is small, and the sliding resistance therebetween is reduced. Of course, in other embodiments, the number of the non-contact portions 211 may be three, five, six, or the like, which is not limited.

Referring to the drawings, in the mounting case 800 of the imaging module according to an embodiment of the present invention, a wiring groove 810 is further formed on a case wall of a side close to the movable lens barrel 210, and the wiring groove 810 is used for wiring wires of the first inductance coil 420 and the second inductance coil 520. Since the wires of the first inductance coil 420 and the second inductance coil 520 are disposed in the cavity of the mounting case 800, the magnetic leakage of the first inductance coil 420 and the second inductance coil 520 can be effectively reduced.

In one embodiment, the imaging module further comprises a heat conducting layer disposed between the first inductor winding 420 and the mounting case 800, and between the second inductor winding 520 and the mounting case 800. Through setting up the heat-conducting layer between first inductance coils 420 and second inductance coils 520 and installation shell 800 for the heat that first inductance coils 420 and second inductance coils 520 produced in the use can be distributed out more rapidly, has improved inductance coils radiating efficiency, has avoided the overheated condition of inductance coils, and then makes its self life can increase.

Referring to fig. 1 and 2, an embodiment of the present invention further provides an endoscope, which includes the above-mentioned imaging module, and further includes an image sensor assembly 900, the image sensor assembly 900 is connected to the imaging module, and the image sensor assembly 900 is used for converting an optical signal passing through the imaging module into an electrical signal. The optical signal passing through the imaging module is converted into an electrical signal by the image sensor assembly 900, so that the endoscope transmits the focus image information mapped by the imaging module.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an imaging module, its characterized in that, imaging module includes:

the first fixed lens group (100), the first fixed lens group (100) comprises a first fixed lens cone (110) and a first fixed lens (120) arranged inside the first fixed lens cone (110); and

the movable lens group (200) comprises a movable lens barrel (210) and a movable lens (220) arranged inside the movable lens barrel (210), and the movable lens barrel (210) is arranged on one side of the first fixed lens barrel (110) along the axial direction of the first fixed lens barrel;

the first fixed lens barrel (110) is fixedly connected with a first soft magnetic component (400), and the movable lens barrel (210) is fixedly connected with a first permanent magnet (610); the first soft-magnetic component (400) and the first permanent magnet (610) are arranged opposite to each other in the axial direction of the moving barrel (210);

when the first soft-magnetic assembly (400) is energized and generates a magnetic field, the first permanent magnet (610) and the first soft-magnetic assembly (400) are capable of generating a first magnetic force with respect to each other to cause the moving barrel (210) to move axially with respect to the first fixed barrel (110).

2. Imaging module according to claim 1, wherein the first soft-magnetic component (400) comprises a first soft-magnetic body (410) and a first inductive coil (420); the first soft magnet (410) is fixedly connected to one end, close to the movable lens group (200), of the first fixed lens barrel (110), and the first inductance coil (420) is sleeved on the periphery of the first soft magnet (410) and is fixedly connected with the first soft magnet;

the first permanent magnet (610) is fixedly connected to one end of the movable lens cone (210) close to the first fixed lens group (100).

3. The imaging module according to claim 2, further comprising a second fixed lens group (300), wherein the second fixed lens group (300) comprises a second fixed lens barrel (310) and a second fixed lens (320) installed inside the second fixed lens barrel (310), the second fixed lens barrel (310) is located on a side of the movable lens barrel (210) away from the first fixed lens barrel (110), and the movable lens barrel (210) can move axially relative to the second fixed lens barrel (310).

4. An imaging module according to claim 3, characterized in that it further comprises a second soft-magnetic component (500) and a second permanent magnet (620);

the second soft magnetic body component (500) and the second permanent magnet (620) are oppositely arranged along the axial direction of the movable lens cone (210), the second soft magnetic body component (500) is fixedly connected to one end, close to the movable lens group (200), of the second fixed lens cone (310), and the second permanent magnet (620) is fixedly connected to one end, close to the second fixed lens group (300), of the movable lens cone (210); the second permanent magnet (620) has a magnetic pole opposite to that of the first permanent magnet (610);

when the second soft-magnetic assembly (500) is energized and generates a magnetic field, the second permanent magnet (620) and the second soft-magnetic assembly (500) are capable of generating a second magnetic force with respect to each other to cause the moving barrel (210) to move axially with respect to the second fixed barrel (310).

5. An imaging module according to claim 4, characterized in that the second soft-magnetic component (500) comprises a second soft-magnetic body (510) and a second inductive coil (520);

the second soft magnet (510) is fixedly connected to the second fixed lens barrel (310), the second inductance coil (520) is sleeved on the periphery of the second soft magnet (510) and is fixedly connected with the second soft magnet, and the winding direction of the second inductance coil (520) is opposite to that of the first inductance coil (420).

6. The imaging module of claim 5, further comprising a mounting housing (800) having a hollow interior;

the first fixed lens barrel (110) and the second fixed lens barrel (310) are fixedly connected in the mounting shell (800), and the movable lens barrel (210) is accommodated in the mounting shell (800) and is in sliding connection with the wall of the mounting shell (800).

7. The imaging module according to claim 6, wherein one of the movable barrel (210) and the mounting shell (800) is provided with a sliding projection (710), and the other is provided with a sliding groove (720) extending axially along the movable barrel (210), and the sliding projection (710) is in guiding fit with the sliding groove (720).

8. The imaging module according to claim 7, wherein a non-contact portion (211) is disposed on a side of a wall of a portion of the movable barrel (210) close to the mounting housing (800), and the non-contact portion (211) is spaced apart from a wall of the mounting housing (800).

9. The imaging module of any of claims 6-8, further comprising a thermally conductive layer; the thermally conductive layer is disposed between the first inductor winding (420) and the mounting enclosure (800), and between the second inductor winding (520) and the mounting enclosure (800).

10. An endoscope, comprising the imaging module of any of claims 1-9, further comprising an image sensor assembly (900), the image sensor assembly (900) being connected to the imaging module, the image sensor assembly (900) being configured to convert optical signals passing through the imaging module into electrical signals.