Lens holder and endoscope

Abstract

The present invention discloses a lens holder and an endoscope, and relates to the technical field of endoscopes. The lens holder includes: a holder body, a light source, a polarizer, and a polarization adjustment component. By arranging a polarization adjustment component with an optical rotation liquid on the distal end surface of the holder body, and the length of the optical rotation liquid on the light output path of the light source is adjustable, and the polarization adjustment component is arranged on the light output path of the light source, the light emitted by the light source forms polarized light after passing through the polarizer, and the polarized light can change the polarization angle of the polarized light according to the length of the optical rotation liquid in the polarization adjustment component on the light output path of the light source after passing through the polarization adjustment component, thereby solving the problem in the prior art that the light in the soft mirror cannot keep passing through the polarizer at a specified angle, and thus cannot ensure that the light has a specified polarization state. When the lens holder provided in the embodiment of the present application is applied to an endoscope, the above-mentioned technical problems can also be solved.

Description

Technical Field

[0001] The invention relates to the field of endoscopes, and in particular to a lens holder and an endoscope. Background Art

[0002] Nervous tissue is the basic component of the nerve plexus. There are many microscopic structures in the human body's nervous tissue, such as cells, collagen fibers and bone structures, which have different effects on the polarization state of light.

[0003] In the prior art, the use of polarized light to obtain information about neural tissue has been applied in hard endoscopes (endoscopes whose main body cannot be bent). Because it is protected by the hard endoscope, the optical fiber can be regarded as an ideal uniform equicircular light-guiding medium. The light emitted by the optical fiber can pass through the polarizer at a specified angle, and the polarization state of the light can be completely preserved. Therefore, by irradiating polarized light at multiple angles and receiving polarized light reflection signals at multiple angles, information about the structure and characteristics of neural tissue can be obtained by analyzing the polarization image.

[0004] The visceral plexus of the human body mainly refers to a part of the autonomic nervous system. They are distributed in the internal organs, cardiovascular system and glands, and mainly regulate the functions of these organs. Due to individual differences (such as age, gender, disease type, etc.), the location and distribution of the visceral plexus may vary.

[0005] However, since the visceral nerve plexuses are very sensitive to stimulation, special care must be taken during surgery or examination to avoid damaging these nerve plexuses and causing functional disorders. This makes the use of hard endoscopes very limited, and in most cases it is difficult to use hard endoscopes to detect visceral nerve tissue.

[0006] For soft endoscopes (endoscopes with a soft and bendable body), although they can be inserted into natural cavities more freely, the natural cavities are curved and irregular, so the optical fiber will inevitably have shape defects and local stress concentration, which makes it impossible for the optical fiber in the soft endoscope to pass through the polarizer at a specified angle, and thus it is impossible to ensure that the light has a specified polarization state, that is, a part of it will leak in the vertical polarization direction, reducing the polarization degree, and even after a certain distance of optical fiber transmission, the polarization state of the light will change, which makes it difficult for the soft endoscope to obtain polarized images of neural tissue. Summary of the invention

[0007] The invention discloses a lens holder and an endoscope, so as to at least partially improve the above technical problems.

[0008] In order to solve the above problems, the present invention adopts the following technical solutions:

[0009] On the one hand, an embodiment of the present application provides a lens mount, comprising: a mount body, a light source, a polarizer, and a polarization adjustment component. The light source is disposed inside the mount body and is used to emit light to the distal end surface of the mount body. The polarizer is located on the light exit path of the light source and is used to convert the light emitted by the light source into polarized light. The polarization adjustment component is disposed on the distal end surface of the mount body, the polarization adjustment component has an optical rotation liquid, and the polarization adjustment component is located on the light exit path of the light source, the polarization adjustment component is configured so that the length of the optical rotation liquid on the light exit path of the light source is adjustable, and the polarization angle of the optical rotation liquid to the polarized light is changed based on the length of the optical rotation liquid on the light exit path of the light source.

[0010] In one embodiment, the polarization adjustment component comprises:

[0011] A main body, wherein the main body has a first channel and a second channel inside, the first channel is located on the light exit path of the light source, the polarizer is arranged in the first channel, the second channel is located on one side of the first channel, and the second channel is connected to the far end of the first channel;

[0012] a first piston disposed in the first passage;

[0013] a second piston, the second piston being disposed in the second channel, a liquid cavity for filling the optically active liquid being formed between the first piston and the second piston, the polarizer being located between the light source and the liquid cavity; and,

[0014] A driving member is disposed inside the main body and is used to provide a force to move the first piston toward the distal end or the proximal end of the first channel, so as to squeeze the optically active liquid into the second channel or squeeze the optically active liquid into the first channel, and change the length of the optically active liquid on the light output path of the light source.

[0015] In one embodiment, the driving member is an air pipe, which is connected to the first channel and is used to inject air into or extract air from the first channel so that the first piston moves in the axial direction of the first channel.

[0016] In one embodiment, the connection point between the air pipe and the first channel is located between the polarizer and the first piston.

[0017] In one embodiment, the polarization adjustment assembly further includes: a reset member, which is disposed in the second channel and connected to the second piston, and is used to drive the first piston and the second piston to reset when the force causing the first piston to move along the axial direction of the first channel disappears.

[0018] In one embodiment, the driving member is a traction structure, the driving member is connected to the second piston, the proximal end of the first channel is connected to the proximal end of the second channel and is sealed, and the driving member is configured so that when the driving member is pulled, the gas in the second channel enters the first channel, thereby pushing the first piston to move toward the distal end of the first channel.

[0019] In one embodiment, the polarization adjustment assembly also includes: a reset member, which is arranged in the second channel, one end of the reset member is connected to the second piston, and the other end is connected to the driving member, and the reset member is used to drive the first piston and the second piston to reset when the force that causes the first piston to move along the axial direction of the first channel disappears.

[0020] In one embodiment, the polarization adjustment component further includes: a light homogenizer, which is disposed at a distal end of the first channel, and on a light output path of the light source, the light homogenizer and the first piston jointly define the first channel.

[0021] In one embodiment, a groove matching the main body is provided on the seat, and the main body is detachably connected to the seat.

[0022] On the other hand, an embodiment of the present application further provides an endoscope, comprising the lens holder as described above.

[0023] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0024] The lens holder provided in the embodiment of the present application, by arranging a polarization adjustment component with an optical rotation liquid on the distal end surface of the holder body, and the length of the optical rotation liquid on the light output path of the light source is adjustable, and the polarization adjustment component is arranged on the light output path of the light source, the light emitted by the light source forms polarized light after passing through the polarizer, and the polarized light can change the polarization angle of the polarized light according to the length of the optical rotation liquid in the polarization adjustment component on the light output path of the light source after passing through the polarization adjustment component, thereby solving the problem in the prior art that the light in the soft mirror cannot keep passing through the polarizer at a specified angle, and thus cannot ensure that the light has a specified polarization state. When the lens holder provided in the embodiment of the present application is applied to an endoscope, the above technical problems can also be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of an endoscope in one embodiment of the present application is shown;

[0027] Figure 2 A schematic structural diagram of a lens mount in one embodiment of the present application is shown;

[0028] Figure 3 A cross-sectional view of a lens mount in a first state in an embodiment of the present application is shown;

[0029] Figure 4 A cross-sectional view of a lens mount in an embodiment of the present application in a second state is shown;

[0030] Figure 5 A cross-sectional view of a main body in a lens mount in an embodiment of the present application is shown;

[0031] Figure 6 A cross-sectional view of another lens mount in an embodiment of the present application in a first state is shown;

[0032] Figure 7 A cross-sectional view of another lens mount in an embodiment of the present application in a second state is shown;

[0033] Figure 8 An exploded view of a partial structure of a lens mount in an embodiment of the present application is shown.

[0034] In the figure: 1, endoscope; 10, lens seat; 110, seat body; 111, groove; 120, light source; 130, polarizer; 140, polarization adjustment component; 141, optical rotation liquid; 142, main body; 1421, first channel; 1422, second channel; 143, first piston; 144, second piston; 145, liquid chamber; 146, driving member; 147, reset member; 148, light homogenizing member. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0037] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0038] The inventive concept of the present application is described here:

[0039] Nervous tissue is the basic component of the nerve plexus. There are many microscopic structures in the human body's nervous tissue, such as cells, collagen fibers and bone structures, which have different effects on the polarization state of light.

[0040] In the prior art, the use of polarized light to obtain information about neural tissue has been applied in hard endoscopes (endoscopes whose main body cannot be bent). Because it is protected by the hard endoscope, the optical fiber can be regarded as an ideal uniform equicircular light-guiding medium. The light emitted by the optical fiber can pass through the polarizer at a specified angle, and the polarization state of the light can be completely preserved. Therefore, by irradiating polarized light at multiple angles and receiving polarized light reflection signals at multiple angles, information about the structure and characteristics of neural tissue can be obtained by analyzing the polarization image.

[0041] The visceral plexus of the human body mainly refers to a part of the autonomic nervous system. They are distributed in the internal organs, cardiovascular system and glands, and mainly regulate the functions of these organs. Due to individual differences (such as age, gender, disease type, etc.), the location and distribution of the visceral plexus may vary.

[0042] However, since the visceral nerve plexuses are very sensitive to stimulation, special care must be taken during surgery or examination to avoid damaging these nerve plexuses and causing functional disorders. This makes the use of hard endoscopes very limited, and in most cases it is difficult to use hard endoscopes to detect visceral nerve tissue.

[0043] For soft endoscopes (endoscopes with a soft and bendable body), although they can be inserted into natural cavities more freely, the natural cavities are curved and irregular, so the optical fiber will inevitably have shape defects and local stress concentration, which makes it impossible for the optical fiber in the soft endoscope to pass through the polarizer at a specified angle, and thus it is impossible to ensure that the light has a specified polarization state, that is, a part of it will leak in the vertical polarization direction, reducing the polarization degree, and even after a certain distance of optical fiber transmission, the polarization state of the light will change, which makes it difficult for the soft endoscope to obtain polarized images of neural tissue.

[0044] Based on this, the inventor provides a lens mount and an endoscope, wherein the lens mount can be used to emit polarized light and can adjust the polarization angle of the polarized light, thereby enabling the polarized light emitted from the lens mount to have a specified polarization state. Meanwhile, the light source and the polarizer are integrated into the lens mount, thereby shortening the propagation path of the light emitted by the light source, thereby reducing or avoiding the situation where the environmental factors between the light source and the polarizer cause the light emitted by the light source to be offset. That is to say, the lens mount provided by the inventor first ensures that the polarized light has a specified polarization state, and secondly enables the polarization angle of the polarized light to be adjusted as required.

[0045] The following is combined with Figures 1 to 8 , a lens holder 10 and an endoscope 1 provided in the present application are described in detail through specific embodiments and their application scenarios.

[0046] See also Figure 1 The embodiment of the present application provides an endoscope 1, which may have a lens holder 10, and the lens holder 10 may be used to emit polarized light to detect nerve tissue in a patient's body, and the polarization angle of the polarized light may be changed according to actual needs. It should be noted that in this embodiment, other structures of the endoscope 1 except the lens holder 10 may refer to the structure of the endoscope 1 in the prior art, and will not be described in detail here.

[0047] Please also see Figure 2 and Figure 3 The lens mount 10 may include: a mount body 110 , a light source 120 , a polarizer 130 and a polarization adjustment component 140 .

[0048] In some embodiments, the base 110 can be used as a carrier of the polarizer 130 and the polarization adjustment component 140. In other embodiments, the base 110 can also be used as a carrier of the light source 120. The specific configuration can be made according to actual conditions and is not intended to be limiting here.

[0049] In this embodiment, the light source 120 can be disposed inside the base 110, preferably fixedly disposed inside the base 110, to ensure that the light source 120 emits light along a specified path, that is, the path of the emitted light does not change, thereby ensuring that the polarization state after passing through the polarizer 130 is the specified polarization state, and the light source 120 is used to emit light to the distal end surface of the base 110, and the light can change the deflection angle after passing through the polarizer 130, thereby enabling it to be used to obtain a polarization image of the neural tissue. The embodiment of the present application does not limit the specific form and structure of the light source 120. For example, in some embodiments, the light source 120 can be a lamp tube or light-emitting diode that can emit natural light, and can be specifically set according to actual conditions.

[0050] The polarizer 130 may be located on the light output path of the light source 120 and is used to convert the light emitted by the light source 120 into polarized light. In this embodiment, the specific form and structure of the polarizer 130 are not limited. For example, in some embodiments, the polarizer 130 may be a polyvinyl alcohol polarizer or a polyvinyl alcohol polarizer, etc., which may be specifically configured according to actual conditions. The embodiment of the present application also does not limit the specific shape of the polarizer 130, which may be circular or square, etc., which may be specifically configured according to actual conditions.

[0051] Please also see Figure 3-Figure 5 The polarization adjustment component 140 can be arranged on the distal end surface of the base body 110, the polarization adjustment component 140 can have an optical rotation liquid 141, the polarization adjustment component 140 can be located on the light output path of the light source 120, and the optical rotation liquid 141 can be used to change the polarization angle of the polarized light. It should be noted that, in this embodiment, the polarization adjustment component 140 can be configured so that the length of the optical rotation liquid 141 on the light output path of the light source 120 is adjustable, and the polarization angle of the polarized light of the optical rotation liquid 141 is changed based on the length of the optical rotation liquid 141 on the light output path of the light source 120.

[0052] Specifically, in this embodiment, the polarization adjustment component 140 may include: a main body 142, a first piston 143, a second piston 144, and a driving member 146. The main body 142 has a first channel 1421 and a second channel 1422 inside. The first channel 1421 may be located on the light output path of the light source 120. The polarizer 130 may be disposed in the first channel 1421. The second channel 1422 may be located on one side of the first channel 1421, and the distal end of the second channel 1422 is connected to the distal end of the first channel 1421. It should be noted that the embodiment of the present application does not limit the specific positions of the first channel 1421 and the second channel 1422. For example, in one embodiment, the second channel 1422 may surround the outer periphery of the first channel 1421. For example, in another embodiment, the second channel 1422 may be disposed side by side with the first channel 1421. The specific arrangement may be based on actual conditions.

[0053] The first piston 143 can be arranged in the first channel 1421, and the second piston 144 can be arranged in the second channel 1422, wherein the first piston 143 can reciprocate in the axial direction of the first channel 1421 under the action of external force, and the second piston 144 can also reciprocate in the axial direction of the second channel 1422 under the action of external force.

[0054] A liquid cavity 145 for filling the optically active liquid 141 may be formed between the first piston 143 and the second piston 144. Preferably, the optically active liquid 141 fills the entire liquid cavity 145. The polarizer 130 may be disposed between the light source 120 and the liquid cavity 145. That is, in the present embodiment, the light emitted by the light source 120 may first pass through the polarizer 130, and the polarizer 130 converts the natural light emitted by the light source 120 into polarized light. The polarized light then changes its polarization angle after passing through the optically active liquid 141, and finally is emitted from the distal end surface of the lens holder 10 at a specified polarization state and polarization angle.

[0055] The driving member 146 may be disposed inside the main body 142, and is used to provide a force to move the first piston 143 toward the distal end of the first channel 1421, and / or to provide a force to move the first piston 143 toward the proximal end of the first channel 1421, so as to squeeze the optically active liquid 141 from the first channel 1421 into the second channel 1422 or squeeze the optically active liquid 141 from the second channel 1422 into the first channel 1421, thereby achieving the effect of changing the length of the optically active liquid 141 on the light output path of the light source 120.

[0056] Specifically, when the first piston 143 is subjected to a force moving toward the distal end of the first channel 1421, the first piston 143 can push the optically active liquid 141 in the liquid chamber 145, and the optically active liquid 141 can squeeze the second piston 144. At this time, the second piston 144 can move toward the proximal end of the second channel 1422, and part of the optically active liquid 141 moves from the first channel 1421 to the second channel 1422, thereby achieving the effect of reducing the length of the optically active liquid 141 on the light output path of the light source 120.

[0057] Similarly, when the first piston 143 receives a force to move toward the proximal direction of the first channel 1421, the first piston 143 can move toward the proximal direction of the first channel 1421. At this time, the second piston 144 can push the optically active liquid 141 to move from the second channel 1422 to the first channel 1421, thereby achieving the effect of increasing the length of the optically active liquid 141 on the light output path of the light source 120.

[0058] Please also see Figure 3 and Figure 4 It should be noted that the embodiment of the present application does not limit the specific form of the driving member 146. For example, in one embodiment, the driving member 146 may be an air pipe. In this case, the driving member 146 may be connected to the first channel 1421 and used to inject air into or extract air from the first channel 1421, so that the first piston 143 moves in the axial direction of the first channel 1421. Specifically, when the driving member 146 is used to inject air into the first channel 1421, the first piston 143 may be subjected to a force from the proximal end of the first channel 1421 toward the distal end of the first channel 1421. At this time, part of the optically active liquid 141 may be pushed from the first channel 1421 to the second channel 1422 by the first piston 143, thereby reducing the length of the optically active liquid 141 in the first channel 1421. It is understandable that, since in this embodiment, the axial direction of the first channel 1421 is the same as the light emitting direction of the light source 120 , in this embodiment, the length of the optically active liquid 141 in the first channel 1421 is the length of the optically active liquid 141 in the light emitting direction of the light source 120 .

[0059] Similarly, when the driving member 146 is used to draw air into the first channel 1421, the first piston 143 may be subjected to a force from the distal end of the first channel 1421 toward the proximal end of the first channel 1421. At this time, the first piston 143 may pull the optically active liquid 141 to move toward the proximal end of the first channel 1421, thereby allowing part of the optically active liquid 141 to move from the second channel 1422 to the first channel 1421, thereby increasing the length of the optically active liquid 141 in the first channel 1421.

[0060] In a preferred embodiment, the connection point between the air pipe and the first channel 1421 can be located between the polarizer 130 and the first piston 143. That is, in this embodiment, the influence of the air pipe on the polarizer 130 during the process of injecting air into or extracting air into the first channel 1421 can be reduced, thereby facilitating the conversion of natural light passing through the polarizer 130 into polarized light of a specified form.

[0061] Further, in this embodiment, the polarization adjustment component 140 may also include a reset member 147, which may be disposed in the second channel 1422 and connected to the second piston 144. The reset member 147 may be used to drive the first piston 143 and the second piston 144 to reset after the force that causes the first piston 143 to move along the axial direction of the first channel 1421 disappears. It should be noted that this embodiment does not limit the specific form and structure of the reset member 147. For example, in one embodiment, the reset member 147 may be a spring, a spring sheet, or a gas, etc., which may be specifically configured according to actual conditions.

[0062] Please also see Figure 5 and Figure 6 In another embodiment, the driving member 146 may also be a traction structure, such as a traction rope or a traction rod, etc. The present application embodiment does not limit this. For ease of description, the following description takes the driving member 146 as a traction rope as an example.

[0063] In this embodiment, the driving member 146 can be connected to the second piston 144, and the proximal end of the first channel 1421 is connected to the proximal end of the second channel 1422 and is sealed. The driving member 146 is configured so that when the driving member 146 is pulled, the gas in the second channel 1422 can enter the first channel 1421, thereby pushing the first piston 143 to move toward the distal end of the first channel 1421, thereby pushing part of the optically active liquid 141 from the first channel 1421 to the second channel 1422, so as to reduce the length of the optically active liquid 141 in the first channel 1421.

[0064] It is worth mentioning that when the driving member 146 is a traction rod, compared with the traction rope, the traction rod can not only transmit tension but also thrust. Therefore, when the driving member 146 is a traction rod, the driving member 146 can also be configured so that when the driving member 146 is pushed, the second piston 144 can squeeze the optically active liquid 141 in the second channel 1422 into the first channel 1421, and then push the first piston 143 toward the proximal end of the first channel 1421 to increase the length of the optically active liquid 141 in the first channel 1421.

[0065] It can be understood that, in this embodiment, the polarization adjustment assembly 140 may also include a reset member 147, which can be arranged in the second channel 1422 and is used to drive the first piston 143 and the second piston 144 to reset when the force that causes the first piston 143 to move along the axial direction of the first channel 1421 disappears. Different from the aforementioned embodiment, in this embodiment, the reset member 147 is connected between the second piston 144 and the driving member 146.

[0066] In other embodiments, the polarization adjustment component 140 may further include a light homogenizer 148, which may be disposed at the distal end of the first channel 1421, and on the light output path of the light source 120, the light homogenizer 148 may jointly define the first channel 1421 with the first piston 143. That is to say, in this embodiment, the first piston 143 and the light homogenizer 148 may be used to form the side wall of the first channel 1421 in the axial direction, thereby reducing the consumables of the entire lens mount 10, and further reducing the weight of the entire lens mount 10.

[0067] Please also see Figure 5 and Figure 8 In addition, in some other embodiments, the seat body 110 can be detachably connected to the main body 142. Specifically, a groove 111 matching the main body 142 can be provided on the seat body 110, and the main body 142 can be selectively embedded in the groove 111 or removed from the groove 111. The embodiment of the present application does not limit the detachable form between the main body 142 and the seat body 110, and can be specifically set according to actual conditions, for example, it can be a snap-on or interference connection.

[0068] The lens holder 10 provided in the embodiment of the present application is provided with a polarization adjustment component 140 having an optical rotation liquid 141 on the distal end surface of the holder body 110, and the length of the optical rotation liquid 141 on the light output path of the light source 120 is adjustable, and the polarization adjustment component 140 is provided on the light output path of the light source 120, and the light emitted by the light source 120 forms polarized light after passing through the polarizer 130, and the polarized light can change the polarization angle of the polarized light according to the length of the optical rotation liquid 141 in the polarization adjustment component 140 on the light output path of the light source 120 after passing through the polarization adjustment component 140, thereby solving the problem in the prior art that the light in the soft mirror cannot keep passing through the polarizer 130 at a specified angle, and thus cannot ensure that the light has a specified polarization state. When the lens holder 10 provided in the embodiment of the present application is applied to the endoscope 1, the above technical problems can also be solved.

[0069] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0070] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0071] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lens holder, applied to an endoscope, characterized in that: The lens mount comprises: seat body; A light source, which is disposed inside the base and is used to emit light toward a distal end surface of the base; a polarizer, the polarizer being located on a light-emitting path of the light source and being used for converting the light emitted by the light source into polarized light; and, A polarization adjustment component, wherein the polarization adjustment component is arranged on the distal end surface of the base body, the polarization adjustment component has an optical rotation liquid, and the polarization adjustment component is located on the light output path of the light source, and the polarization adjustment component is configured so that the length of the optical rotation liquid on the light output path of the light source is adjustable, and the polarization angle of the optical rotation liquid to the polarized light is changed based on the length of the optical rotation liquid on the light output path of the light source.

2. The lens mount according to claim 1, characterized in that: The polarization adjustment component comprises: A main body, wherein the main body has a first channel and a second channel inside, the first channel is located on the light exit path of the light source, the polarizer is arranged in the first channel, the second channel is located on one side of the first channel, and the second channel is connected to the far end of the first channel; a first piston disposed in the first passage; a second piston, the second piston being disposed in the second channel, a liquid cavity for filling the optically active liquid being formed between the first piston and the second piston, the polarizer being located between the light source and the liquid cavity; and, A driving member is disposed inside the main body and is used to provide a force to move the first piston toward the distal end or the proximal end of the first channel, so as to squeeze the optically active liquid into the second channel or squeeze the optically active liquid into the first channel, and change the length of the optically active liquid on the light output path of the light source.

3. The lens mount according to claim 2, characterized in that: The driving member is an air pipe, which is communicated with the first channel and is used to inject air into or extract air from the first channel so that the first piston moves in the axial direction of the first channel.

4. The lens mount according to claim 3, characterized in that: The connection point between the air pipe and the first channel is located between the polarizer and the first piston.

5. The lens mount according to claim 3, characterized in that: The polarization adjustment assembly also includes a reset member, which is disposed in the second channel and connected to the second piston, and is used to drive the first piston and the second piston to reset when the force causing the first piston to move along the axial direction of the first channel disappears.

6. The lens mount according to claim 2, characterized in that: The driving member is a traction structure, and the driving member is connected to the second piston. The proximal end of the first channel is connected to the proximal end of the second channel and is sealed. The driving member is configured so that when the driving member is pulled, the gas in the second channel enters the first channel, thereby pushing the first piston to move toward the distal end of the first channel.

7. The lens mount according to claim 6, characterized in that: The polarization adjustment assembly also includes: a reset member, which is arranged in the second channel, one end of the reset member is connected to the second piston, and the other end is connected to the driving member, and the reset member is used to drive the first piston and the second piston to reset when the force that causes the first piston to move along the axial direction of the first channel disappears.

8. The lens mount according to claim 2, characterized in that: The polarization adjustment component further includes: a light homogenizer, which is disposed at the far end of the first channel. On the light output path of the light source, the light homogenizer and the first piston jointly define the first channel.

9. The lens mount according to any one of claims 2 to 8, characterized in that: The seat body is provided with a groove matching the main body, and the main body is detachably connected to the seat body.

10. An endoscope, characterized in that: Comprising a lens mount as described in any one of claims 1-9.

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