Two-way optical imaging system and endoscope

Abstract

The invention relates to a two-way optical imaging system and an endoscope. The system sequentially comprises an image transmission module, a relay module and an objective lens module from an object side to an image side along an optical axis, wherein the image transmission module comprises a first image transmission path and a second image transmission path, and a lens group in the first image transmission path and a lens group in the second image transmission path are used for collecting and transmitting light on an object side; the relay module comprises a first relay lens and a second relay lens, the first relay lens is used for reflecting the light transmitted by the first image transmission path to the objective lens module, and the second relay lens is used for reflecting the light transmitted by the second image transmission path to the objective lens module; the objective lens module is used for imaging the light transmitted by the first image transmission path and the second image transmission path. By adopting the method, the problem of low adaptability of a double-path optical imaging system can be solved.

Description

Technical Field

[0001] The present application relates to the field of optics, and particularly to a dual-channel optical imaging system and an endoscope. Background Art

[0002] With the continuous improvement of living standards, health has gradually become one of the main concerns of people, and a sound medical means requires advanced medical equipment as technical support. The endoscope not only greatly expands the means and methods for medical staff to detect and examine, but also facilitates more precise observation of relevant tissues. All objects exist in three dimensions, and all objects seen by the human eye structure are three-dimensional bodies. At present, the vast majority of medical equipment transmits planar images to doctors. In order to enhance the user experience and authenticity, it is imperative to convert two-dimensional planar images into three-dimensional stereoscopic images. In related technologies, imaging is achieved in an optical pipeline including lenses, an objective lens group, and a beam splitting prism, which is not conducive to the expansion of the optical path and has the problem of low adaptability.

[0003] In view of the problem of low adaptability of the dual-channel optical imaging system in related technologies, no effective solution has been proposed yet. Summary of the Invention

[0004] Based on this, it is necessary to provide a dual-channel optical imaging system and an endoscope that can at least solve the problem of low adaptability of the dual-channel optical imaging system for the above technical problems.

[0005] In a first aspect, a dual-channel optical imaging system is provided in this embodiment. The dual-channel optical imaging system sequentially includes, along the optical axis from the object side to the image side: an image transmission module, a relay module, and an objective lens module; wherein,

[0006] The image transmission module includes a first image transmission path and a second image transmission path. The lens groups in the first image transmission path and the lens groups in the second image transmission path are used to collect and transmit the light rays on the object side;

[0007] The relay module includes a first relay mirror and a second relay mirror. The first relay mirror is used to reflect the light rays transmitted by the first image transmission path to the objective lens module, and the second relay mirror is used to reflect the light rays transmitted by the second image transmission path to the objective lens module;

[0008] The objective lens module is used to image the light rays transmitted by the first image transmission path and the second image transmission path respectively.

[0009] In some of these embodiments, the first relay mirror includes a first inclined surface and a second inclined surface; the first inclined surface is used to reflect the light rays transmitted by the first image transmission path to the second inclined surface, and the second inclined surface is used to reflect the light rays to the objective lens module;

[0010] The second relay mirror includes a third inclined surface and a fourth inclined surface; the third inclined surface is configured to reflect the light transmitted by the second image transmission path to the fourth inclined surface, and the fourth inclined surface is configured to reflect the light to the objective lens module.

[0011] In some embodiments, the included angle between the first inclined surface and the second inclined surface is adjustable to vary the angle between the light incident on the first relay mirror and the light exiting the first relay mirror;

[0012] The included angle between the third inclined surface and the fourth inclined surface is adjustable to vary the angle between the light incident on the second relay mirror and the light exiting the second relay mirror.

[0013] In some embodiments, the objective lens module includes: a first objective lens unit and a second objective lens unit; wherein,

[0014] The first objective lens unit includes a first lens group with adjustable diopter, a first reflecting member for changing the optical path direction, a first imaging mechanism, and a second imaging mechanism; the light input into the first objective lens unit sequentially passes through the first lens group and the first reflecting member and is input into the first imaging mechanism and the second imaging mechanism;

[0015] The second objective lens unit includes a second lens group with adjustable diopter, a second reflecting member for changing the optical path direction, a third imaging mechanism, and a fourth imaging mechanism; the light input into the second objective lens unit sequentially passes through the second lens group and the second reflecting member and enters the third imaging mechanism and the fourth imaging mechanism.

[0016] In some embodiments, the first image transmission path sequentially includes, along the light incident direction: a first image transmission objective lens, a first image transmission rod lens, and a first image transmission eyepiece; wherein, the first image transmission objective lens is configured to collect the light on the object side; the first image transmission rod lens is configured to transmit the light to the first image transmission eyepiece; the first image transmission eyepiece is configured to emit the incident light as parallel light;

[0017] The second image transmission path sequentially includes, along the light incident direction: a second image transmission objective lens, a second image transmission rod lens, and a second image transmission eyepiece; wherein, the second image transmission objective lens is configured to collect the light on the object side; the second image transmission rod lens is configured to transmit the light to the second image transmission eyepiece; the second image transmission eyepiece is configured to emit the incident light as parallel light.

[0018] In some embodiments, the image transmission module further includes a first lighting device, which is disposed at the light exiting ends of the first image transmission eyepiece and the second image transmission eyepiece.

[0019] Second aspect, in this embodiment, an endoscope, an endoscope assembly and the optical imaging system described in the first aspect above are provided.

[0020] In some embodiments, the endoscope assembly includes a surgical instrument, and the surgical instrument can reach the target object on the object side along the directions of the objective lens module, the relay module and the image transmission module in sequence.

[0021] In some embodiments, the endoscope assembly further includes a second lighting device, and the second lighting device is used to provide illumination for the surgical instrument.

[0022] In some embodiments, the endoscope further includes a computer device, and the computer device is communicatively connected to the optical imaging system for processing and displaying the imaging signals acquired by the optical imaging system.

[0023] The above dual-channel optical imaging system and endoscope achieve the long optical path connection of the dual channels of the image transmission module and the objective lens module by reflecting light through the relay module; if it is necessary to reduce the size of the rear optical path, the optical path can be narrowed by the reflection of the relay module; if it is necessary to provide a wider imaging field of view, the optical path direction can be changed by the reflection of the relay module; thereby improving the flexibility and adaptability of the dual-channel optical imaging system. Description of the Drawings

[0024] Figure 1 Schematic diagram of the dual-channel optical imaging system in one embodiment;

[0025] Figure 2 Schematic diagram of a relay module in one embodiment;

[0026] Figure 3 Schematic diagram of another relay module in one embodiment;

[0027] Figure 4 Schematic diagram of the dual-channel optical imaging system in another embodiment;

[0028] Figure 5 Schematic diagram of the first image transmission objective lens in one embodiment;

[0029] Figure 6 Schematic diagram of an endoscope in one embodiment;

[0030] Figure 7 Internal structure diagram of a computer device in one embodiment.

[0031] Reference numerals: 1, image transmission module; 11, first image transmission path; 111, first image transmission objective lens; 112, first image transmission rod lens; 113, first image transmission eyepiece; 12, second image transmission path; 121, second image transmission objective lens; 122, second image transmission rod lens; 123, second image transmission eyepiece; 13, first illumination device; 2, relay module; 21, first relay lens; 22, second relay lens; 3, objective lens module; 31, first objective lens unit; 311, first lens group; 312, first reflecting member; 313, first imaging mechanism; 314, second imaging mechanism; 32, second objective lens unit; 321, second lens group; 322, second reflecting member; 323, third imaging mechanism; 324, fourth imaging mechanism; 4, three-dimensional object; 5, transmitted light; 6, surgical instrument; 7, second illumination device. Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be described and explained below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without making creative efforts belong to the scope of protection of the present application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be understood that the content disclosed in the present application is insufficient.

[0034] Referring to "embodiments" in the present application means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments without conflict.

[0035] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the ordinary meanings understood by those with ordinary skills in the technical field to which this application belongs. The words such as "a", "an", "one", "the" and the like involved in this application do not indicate a limitation of quantity and may represent singular or plural. The terms "comprising", "including", "having" and any variations thereof involved in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or units, but may further include unlisted steps or units, or may further include other steps or units inherent to these processes, methods, products or devices. The words such as "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application means greater than or equal to two. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, "A and / or B" may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The terms "first", "second", "third" and the like involved in this application are only used to distinguish similar objects and do not represent a specific order of the objects.

[0036] This embodiment provides a dual-channel optical imaging system. Figure 1 It is a schematic diagram of the dual-channel optical imaging system in this embodiment. As Figure 1 shown, the dual-channel optical imaging system sequentially includes an image transfer module 1, a relay module 2, and an objective lens module 3 along the optical axis from the object side to the image side. Among them, a three-dimensional object 4 can be placed on the object side, and the dual-channel optical imaging system can perform three-dimensional imaging or three-dimensional stereoscopic imaging on the three-dimensional object 4.

[0037] The image transfer module 1 includes a first image transfer path 11 and a second image transfer path 12. The lens groups in the first image transfer path 11 and the second image transfer path 12 are used to collect and transmit the light on the object side; the relay module 2 includes a first relay mirror 21 and a second relay mirror 22. The first relay mirror 21 is used to reflect the light transmitted by the first image transfer path 11 to the objective lens module 3, and the second relay mirror 22 is used to reflect the light transmitted by the second image transfer path 12 to the objective lens module 3; the objective lens module 3 is used to transmit and image the light transmitted by the first image transfer path 11 and the second image transfer path 12 respectively.

[0038] Among them, lens groups are respectively arranged in the first image transfer path 11 and the second image transfer path 12. The light exit direction can be changed through the lens groups, and the lens groups can be set or modified according to the image transfer requirements. After the light on the object side enters the image transfer module 1, the first image transfer path 11 and the second image transfer path 12 respectively transmit the light to the first relay mirror 21 and the second relay mirror 22 of the relay module 2.

[0039] The first relay mirror 21 and the second relay mirror 22 in the relay module 2 can reduce the loss of marginal rays and achieve directional transmission close to all rays. Specifically, the relay module 2 changes the optical path direction by reflecting light rays, so that the light rays output from the first image transmission path 11 and the second image transmission path 12 in the image transmission system can be transmitted to the objective lens module 3 for imaging. Optionally, the first relay mirror 21 and / or the second relay mirror 22 of the relay module 2 are replaceable. By replacing the first relay mirror 21 and / or the second relay mirror 22, the angle of light reflection is changed, so that the dual-channel optical imaging system can adapt to different requirements and improve the reusability of the dual-channel optical imaging system.

[0040] The objective lens module 3 includes at least an imaging mechanism; the imaging mechanism is a processor that can convert optical signals into electrical signals. Optionally, the objective lens module 3 can also be provided with a lens group having the functions of converging and diverging optical paths. The lens group collects and transmits light rays 5 to focus the target object on the object side. Optionally, in order to keep the imaging image of the target object on the object side in a clear position all the time, each lens in the lens group can be moved successively.

[0041] In the dual-channel optical imaging system of this embodiment, the relay module 2 is used to achieve seamless dual-channel docking between the image transmission module 1 and the objective lens module 3; among them, the relay module 2 can not only expand the two-way pupil distance, enhance the three-dimensional stereo comfort, but also change the optical path propagation direction. When the relay module 2 narrows the optical path by reflection, the size of the rear-end optical path can be reduced; when the optical path direction is adjusted by the reflection of the relay module 2, a wider imaging field of view can be provided, thereby improving the flexibility and adaptability of the dual-channel optical imaging system.

[0042] In some of these embodiments, the first relay mirror 21 includes a first inclined surface and a second inclined surface; the first inclined surface is used to reflect the light rays transmitted by the first image transmission path 11 to the second inclined surface, and the second inclined surface is used to reflect the light rays to the objective lens module 3; the second relay mirror 22 includes a third inclined surface and a fourth inclined surface; the third inclined surface is used to reflect the light rays transmitted by the second image transmission path 12 to the fourth inclined surface, and the fourth inclined surface is used to reflect the light rays to the objective lens module 3.

[0043] When the angles between the first inclined surface and the second inclined surface and the optical axis are equal, the light rays input to the first relay mirror 21 and the light rays output from the first relay mirror 21 are parallel to each other. When the first inclined surface is at a certain angle relative to the incident light path and the normal line of the first inclined surface is tilted upward, and the second inclined surface is parallel to the first inclined surface, the light rays incident on the first inclined surface deviate from the original optical path direction and are reflected downward to the second inclined surface. After being reflected by the second inclined surface, the light rays are parallelly emitted, and the effect of narrowing the optical path can be achieved.

[0044] When the included angles between the first inclined plane and the second inclined plane and the optical axis are not equal, the light rays input to the first relay mirror 21 and the light rays output from the first relay mirror 21 are not parallel to each other. By changing the inclination degrees of the first inclined plane and the second inclined plane, it is possible to provide a visual field convenience for the acquisition of the imaging pattern. Similarly, when the included angles between the third inclined plane and the fourth inclined plane and the optical axis are equal, the light rays input to the first relay mirror 21 and the light rays output from the first relay mirror 21 are parallel to each other; when the included angles between the third inclined plane and the fourth inclined plane and the optical axis are not equal, the light rays input to the first relay mirror 21 and the light rays output from the first relay mirror 21 are not parallel to each other, which will not be elaborated here.

[0045] Furthermore, the included angle between the first inclined plane and the second inclined plane is adjustable so that the angle between the light rays incident on the first relay mirror 21 and the light rays emitted from the first relay mirror 21 changes; the included angle between the third inclined plane and the fourth inclined plane is adjustable so that the angle between the light rays incident on the second relay mirror 22 and the light rays emitted from the second relay mirror 22 changes.

[0046] Among them, by adjusting the included angles between the first inclined plane and the second inclined plane and the included angles between the third inclined plane and the fourth inclined plane, the dual-channel optical imaging system can meet the application requirements in different scenarios.

[0047] Optionally, Figure 2 A schematic diagram of the relay module 2 is provided, as Figure 2 shown. The transmission light rays 5 coming from the image transmission system reach the relay module 2 as parallel light rays. The light ray γ passes through the first inclined plane with an angle e above the central axis of the first relay mirror 21 and the second inclined plane with an angle f in sequence and exits parallelly. The light ray δ passes through the third inclined plane with an angle h below the central axis of the relay mirror and the fourth inclined plane with an angle g in sequence and exits parallelly. Among them, e + f = 90°, and g + h = 90°. While ensuring the connection and transmission, the first relay mirror 21 and the second relay mirror 22 can narrow the optical path and reduce the size; using the relay module 2 can make the best use of the space. When the dual-channel optical imaging system is applied to an endoscope, the dual-channel optical imaging system can optimize the external structure, making the handheld part of the endoscope lighter and smaller, which is beneficial for the operator to control the device with one hand.

[0048] Optionally, Figure 3 Another schematic diagram of the relay module 2 is provided, as Figure 3 shown. After the transmission light rays 5 pass through the first relay mirror 21 and the second relay mirror 22, the light rays ω and the light ray θ are respectively emitted, realizing the non-parallel emission of the light rays ω and the light ray θ. In the application scenario of the endoscope, in order to obtain the best human eye observation field of view, the operator needs to operate the instrument through the endoscope in a direction perpendicular to the detected object. It can include Figure 3The dual-channel optical imaging system of the relay module 2 shown is applied to an endoscope, and some lenses in the image transmission module 1 and the objective lens module 3 of the dual-channel optical imaging system are fixed based on application requirements, so that the operator can pass through the objective lens module 3, Figure 3 The optical path constructed by the relay module 2 and the image transmission module 1 shown to obtain the operation field of view; at the same time, there is a space in the middle of the relay module 2 for the operator to perform surgical work, so that the optical path for auxiliary observation does not interfere with the instrument operation, providing convenience for the operator's vision.

[0049] In this embodiment, by setting the first relay mirror 21 with a first inclined surface and a second inclined surface and the second relay mirror 22 with a third inclined surface and a fourth inclined surface, the optical path incident on the first relay mirror 21 and the second relay mirror 22 is changed, improving the flexibility and adaptability of the dual-channel optical imaging system.

[0050] In one embodiment, the objective lens module 3 includes: a first objective lens unit 31 and a second objective lens unit 32; wherein, the first objective lens unit 31 includes a first lens group 311 with adjustable diopter, a first reflecting member 312 for changing the optical path direction, a first imaging mechanism 313 and a second imaging mechanism 314; the light input into the first objective lens unit 31 is sequentially input into the first imaging mechanism 313 and the second imaging mechanism 314 along the first lens group 311 and the first reflecting member 312; the second objective lens unit 32 includes a second lens group 321 with adjustable diopter, a second reflecting member 322 for changing the optical path direction, a third imaging mechanism 323 and a fourth imaging mechanism 324; the light input into the second objective lens unit 32 enters the third imaging mechanism 323 and the fourth imaging mechanism 324 sequentially along the second lens group 321 and the second reflecting member 322.

[0051] Among them, the first lens group 311 and the second lens group 321 are converging or diverging optical elements made of glass or plastic materials with a certain optical power. According to different curvatures, they can be divided into positive lenses and negative lenses. Multiple lenses combined together can form a cemented lens. The first lens group 311 and the second lens group 321 can include one or more lens components such as lenses and cemented lens groups. Optionally, the lens components in the first lens group 311 and the second lens group 321 can move back and forth to change the diopter and realize the function of focusing on the three-dimensional object 4, so that the image always remains in a clear position.

[0052] The first reflecting member 312 and the second reflecting member 322 are used to change the optical path direction. Among them, the first reflecting member 312 transmits the incident light to the first imaging mechanism 313 and the second imaging mechanism 314 respectively; the second reflecting member 322 transmits the incident light to the third imaging mechanism 323 and the fourth imaging mechanism 324 respectively.

[0053] The first imaging mechanism 313, the second imaging mechanism 314, the third imaging mechanism 323, and the fourth imaging mechanism 324 are used to convert optical signals into electrical signals. Through a total of four imaging mechanisms in a dual-channel configuration, functions such as 3D white light imaging and fluorescence imaging can be achieved. Optionally, the first imaging mechanism 313 and the second imaging mechanism 314 are symmetrically arranged opposite to the third imaging mechanism 323 and the fourth imaging mechanism 324. By means of the first imaging mechanism 313, the second imaging mechanism 314, the third imaging mechanism 323, and the fourth imaging mechanism 324, a stereoscopic image is generated, enhancing the sense of depth and spatial perception to meet the requirements of 3D imaging. Optionally, when the optical signal is a laser or LED light source with a specific wavelength that excites a fluorescent dye to emit a fluorescent signal with a specific wavelength, fluorescence imaging can be achieved based on the first imaging mechanism 313, the second imaging mechanism 314, the third imaging mechanism 323, and the fourth imaging mechanism 324.

[0054] In this embodiment, the first objective lens unit 31 and the second objective lens unit 32 can adapt to the clear imaging requirements for different object distances through the first lens group 311 and the second lens group 321 with adjustable diopter; combining the first objective lens unit 31 and the second objective lens unit 32, which include the first reflecting member 312, the second reflecting member 322, and four imaging mechanisms, with the image transmission module 1 and the relay unit 2 can provide depth information of the target object, thereby improving the imaging quality.

[0055] In one embodiment, the first image transmission path 11 sequentially includes, along the light incident direction: a first image transmission objective lens 111, a first image transmission rod lens 112, and a first image transmission eyepiece 113; wherein, the first image transmission objective lens 111 is used to collect the light on the object side; the first image transmission rod lens 112 is used to transmit the light 5 to the first image transmission eyepiece 113; the first image transmission eyepiece 113 is used to emit the incident light as parallel light; the second image transmission path 12 sequentially includes, along the light incident direction: a second image transmission objective lens 121, a second image transmission rod lens 122, and a second image transmission eyepiece 123; wherein, the second image transmission objective lens 121 is used to collect the light on the object side; the second image transmission rod lens 122 is used to transmit the light 5 to the second image transmission eyepiece 123; the second image transmission eyepiece 123 is used to emit the incident light as parallel light.

[0056] Among them, the first image transmission objective lens 111 and the second image transmission objective lens 121 collect the light on the object side and focus the light through refraction or reflection. The first image transmission objective lens 111 and the second image transmission objective lens 121 respectively include a single lens or a lens group.

[0057] The first image transfer rod lens 112 and the second image transfer rod lens 122 can transmit optical signals with very low signal loss, which enables it to maintain signal intensity over long distances, allowing the light rays transmitted from the first image transfer objective lens 111 to the first transmission eyepiece and from the second image transfer objective lens 121 to the second transmission eyepiece to achieve low-loss transmission, so that the dual-channel optical imaging system can be applied to long-distance optical imaging environments. Depending on specific application requirements, the first image transfer rod lens 112 and the second image transfer rod lens 122 can be made of optical glass.

[0058] The first image transfer eyepiece 113 and the second image transfer eyepiece 123 each include a single lens or a lens group, which readjust the divergent light rays at the focal plane into parallel light beams through refraction or reflection, so that the outgoing light rays can meet the observation requirements of the human eye.

[0059] Optionally, the first image transfer objective lens 111 has the same structure as the second image transfer objective lens 121, the first image transfer rod lens 112 has the same structure as the second image transfer rod lens, and the first image transfer eyepiece 113 has the same structure as the second image transfer eyepiece 123.

[0060] In this embodiment, the first image transfer objective lens 111 and the second image transfer objective lens 121 can collect light rays to form a high-resolution real image; the first image transfer rod lens 112 and the second image transfer rod lens 122 can achieve low-loss transmission; the first image transfer eyepiece 113 and the second image transfer eyepiece 123 can turn the messy light rays transmitted by the rod lens into parallel light for outgoing, thereby supporting high-resolution imaging and improving the image quality of imaging.

[0061] Furthermore, the image transfer module 1 further includes a first lighting device 13, and the first lighting device 13 is disposed at the light ray outgoing ends of the first image transfer eyepiece 113 and the second image transfer eyepiece 123. Optionally, the first lighting device 13 can be a device that conducts light rays through an optical fiber bundle or an optical fiber. Optionally, the first lighting device 13 is disposed in a cavity, and the lens groups in the first image transfer path 11 and the second image transfer path 12 are disposed in another cavity, so that lighting and optical path transmission do not interfere with each other.

[0062] In this embodiment, the first lighting device 13 provides a light source for the dual-channel optical imaging system, which can avoid the problem of energy attenuation caused by the traditional front-mounted light source due to long distance and scattering, and helps to achieve uniform distribution of light rays. When applying the dual-channel optical imaging system to an endoscope, the first lighting device 13 can also be set so that during the operation of the surgery, the first lighting device 13 provides a light source to illuminate the dark surgical tissue (target object), or the first lighting device 13 provides a specific light source to cause a specific reaction of the surgical tissue to achieve a detection purpose.

[0063] In one embodiment, Figure 4 Another structural schematic diagram of the dual-channel optical imaging system is provided, asFigure 4 As shown, from left to right, it successively includes an image transmission module 1, a relay module 2, and an objective lens module 3. At the ends of the first image transmission eyepiece 113 and the second image transmission eyepiece 123 of the image transmission module 1, a first lighting device 13 is further provided, and the first lighting device 13 provides a light source. The target object on the object side of the dual-channel optical imaging system is a three-dimensional object 4. The three-dimensional object 4 is located at the incident end of the transmission light 5 of the image transmission module 1, and the transmission light 5 passes through Figure 4 the dual channels in

[0064] wherein, the structures of the first image transmission path 11 and the second image transmission path 12 are the same. The first image transmission path 11 includes a first image transmission objective lens 111, a first image transmission rod lens 112, and a first image transmission eyepiece 113. Optionally, Figure 5 a schematic diagram of the first image transmission objective lens 111 is provided, as Figure 5 shown, from the object side to the virtual image side, they are successively the object surface, S1111 (convex surface), S1112 (concave surface), S1113 (flat surface), S1114 (flat surface), the aperture stop, S1115 (convex surface), S1116 (convex surface), S1117 (convex surface), S1118 (concave surface), S1119 (concave surface), S1120 (convex surface), S1121 (convex surface), S1122 (convex surface), S1123 (convex surface), S1124 (flat surface), S1125 (flat surface), S1126 (image surface). Through Figure 5 the optical design of the image transmission objective lens shown, the light 5 can be collected and transmitted with the maximum efficiency. The lens structures of the first image transmission objective lens 111 and the second image transmission objective lens 121 are the same, and will not be elaborated here.

[0065] The radius of curvature R, the central thickness Tc, the refractive index Nd, and the Abbe number Vd of each lens in the first image transmission objective lens 111 can be as shown in Table 1.

[0066] Table 1

[0067]

[0068] It can be understood that other different models of the first image transmission objective lens 111 can be selected. In the case where the image transmission module 1 is damaged, the damaged devices therein can also be replaced.

[0069] Based on Figure 4In the dual-channel optical imaging system shown, when natural light or the light provided by an illumination device reaches the surface of the three-dimensional object 4, the reflected light scatters in all directions, and part of the light enters the image transmission module 1. The image transmission module 1 is used to collect and transmit the light 5. The image transmission module 1 consists of two paths of light, namely the first image transmission path 11 and the second image transmission path 12. The outside of the first image transmission path 11 and the second image transmission path 12 is wrapped with a structural member. Among them, the illumination device providing the light can be the above-mentioned first illumination device 13 or the external second illumination device 7. The optical path of the second illumination device 7 reaching the three-dimensional object is independent of the imaging optical path of the dual-channel optical imaging system. Optionally, the illumination device providing the light can be devices such as an illumination optical fiber or a light bulb.

[0070] The transmitted light 5 first passes through the first image transmission objective lens 111 and the second image transmission objective lens 121. The first image transmission objective lens 111 and the second image transmission objective lens 121 are composed of a lens group. The collected light enters the first image transmission rod lens 112 and the second image transmission rod lens 122 respectively. The first image transmission rod lens 112 and the second image transmission rod lens 122 are composed of multiple groups of rod lenses and are used to uniformly transmit the light 5. The transmitted light 5 reaches the first image transmission eyepiece 113 and the second image transmission eyepiece 123. The first image transmission eyepiece 113 and the second image transmission eyepiece 123 are composed of a combination of concave and convex lenses, and turn the disordered light transmitted by the first image transmission rod lens 112 and the second image transmission rod lens 122 into parallel light for outgoing.

[0071] The parallel light beam enters the relay module 2. The first relay mirror 21 and the second relay mirror 22 in the relay module 2 can directionally change the optical path and seamlessly connect the optical path to the objective lens module 3 at the back end. The light α passes through the first inclined plane with an angle b above the central axis of the first relay mirror 21 and the second inclined plane with an angle a, and then exits parallel again; the light β passes through the third inclined plane with an angle c below the central axis of the second relay mirror 22 and the fourth inclined plane with an angle d, and then exits parallel again. While ensuring the connection and transmission, it can extend the optical path and effectively expand the optical path. It makes the narrow space support the design of a larger structure. Optionally, a + b = 90°, c + d = 90°. Optionally, the first relay mirror 21 and the second relay mirror 22 can be selected Figure 2 The structure shown, or can also be selected Figure 3 The structure shown.

[0072] The objective lens module 3 includes a first lens group 311 and a second lens group 321. The first lens group 311 and the second lens group 321 can be composed of multiple lenses and cemented lens groups. The lens assemblies therein can move back and forth to change the diopter and have a focusing function, so that when observing a three-dimensional object 4 at various distances and in various directions, an image at a clear position is always obtained, and it also makes it possible to detect three-dimensional objects 4 of different sizes. The first lens group 311 and the second lens group 321 are used to receive the light transmitted by the relay module 2. The light received by the first lens group 311 reaches the first reflecting member 312, and the light received by the second lens group 321 reaches the second reflecting member 322. By using the refraction or reflection characteristics of the first reflecting member 312 and the second reflecting member 322, multi-channel imaging can be achieved: multiple channel optical signals will be processed into electrical signals on the corresponding imaging mechanisms. One channel includes a first imaging mechanism 313 and a second imaging mechanism 314; another channel includes a third imaging mechanism 323 and a fourth imaging mechanism 324.

[0073] A dual-channel optical imaging system provided in this embodiment realizes binocular multi-channel spectral imaging by using the relay module 2 to connect the long optical path of the image transmission system and the objective lens system. The relay module 2 can also effectively expand the pupil distance. Through the design of the image transmission objective lens, high-quality collection and transmission of light 5 are realized, the three-dimensional comfort is improved, and the image quality is improved. And after passing through the relay system, the size of the rear optical path (objective lens module 3) can be reduced. When operating in a small space, the size can be utilized to the extreme to achieve miniaturization. And the replacement of each module in this embodiment is more flexible and convenient, which is beneficial to increasing the reuse rate of the dual-channel optical imaging system.

[0074] Based on the same inventive concept, the embodiment of the present application also provides an endoscope including the above-mentioned optical imaging system. The solution provided by the endoscope device to solve the problem is similar to the solution described in the above-mentioned optical imaging system embodiment. Therefore, the specific limitations in one or more of the following endoscope embodiments can refer to the limitations on the optical imaging system in the above text and will not be repeated here.

[0075] In one embodiment, an endoscope, an endoscope assembly and the dual-channel optical imaging system in the above one or more embodiments are provided.

[0076] In one embodiment, the endoscope assembly includes a surgical instrument 6, and the surgical instrument 6 can reach the target object on the object side along the directions of the objective lens module 3, the relay module 2 and the image transmission module 1 in sequence. The surgical instrument 6 can be an ultrasonic surgical instrument, a laser or a radiofrequency surgical device, etc., which are instruments involved in endoscopic surgery.

[0077] In one embodiment, the endoscope assembly further includes a second lighting device 7 for providing illumination for the surgical instrument 6. The second lighting device 7 can use devices such as xenon lamps and LED lamps to provide a light source, and transmit the light through a light guide fiber to the target object on the object side of the endoscope. The second lighting device provides uniform illumination to facilitate the user's surgical operation based on the surgical instrument 6.

[0078] In one embodiment, the endoscope further includes a computer device communicatively connected to the optical imaging system for processing and displaying the imaging signals acquired by the optical imaging system. Among them, after the first imaging mechanism 313, the second imaging mechanism 314, the third imaging mechanism 323, and the fourth imaging mechanism 324 convert the optical signals into electrical signals, they are collected and calculated by the computer device.

[0079] Optionally, Figure 6 A schematic diagram of an endoscope is provided, as Figure 6 shown. The computer device includes an image processing device, a host device, and an image display. The host device program-controls the image processing device to output image signals in different formats, and finally displays an image or a video stream on the image display.

[0080] In one embodiment, the dual-channel optical imaging system sequentially includes, along the optical axis from the object side to the image side: an image transmission module 1, a relay module 2, and an objective module 3; wherein, the image transmission module 1 includes a first image transmission path 11 and a second image transmission path 12, and the lens groups in the first image transmission path 11 and the second image transmission path 12 are used to collect and transmit the light on the object side; the relay module 2 includes a first relay mirror 21 and a second relay mirror 22, the first relay mirror 21 is used to reflect the light transmitted by the first image transmission path 11 to the objective module 3, and the second relay mirror 22 is used to reflect the light transmitted by the second image transmission path 12 to the objective module 3; the objective module 3 is used to image the light transmitted by the first image transmission path 11 and the second image transmission path 12 respectively.

[0081] In one embodiment, the first relay mirror 21 includes a first inclined surface and a second inclined surface; the first inclined surface is used to reflect the light transmitted by the first image transmission path 11 to the second inclined surface, and the second inclined surface is used to reflect the light to the objective module 3; the second relay mirror 22 includes a third inclined surface and a fourth inclined surface; the third inclined surface is used to reflect the light transmitted by the second image transmission path 12 to the fourth inclined surface, and the fourth inclined surface is used to reflect the light to the objective module 3.

[0082] In one embodiment, the angle between the first inclined surface and the second inclined surface is adjustable so that the angle between the light incident on the first relay mirror 21 and the light exiting the first relay mirror 21 changes; the angle between the third inclined surface and the fourth inclined surface is adjustable so that the angle between the light incident on the second relay mirror 22 and the light exiting the second relay mirror 22 changes.

[0083] In one embodiment, the objective lens module 3 includes: a first objective lens unit 31 and a second objective lens unit 32; wherein, the first objective lens unit 31 includes a first lens group 311 with adjustable diopter, a first reflecting member 312 for changing the optical path direction, a first imaging mechanism 313 and a second imaging mechanism 314; the light entering the first objective lens unit 31 is sequentially input into the first imaging mechanism 313 and the second imaging mechanism 314 along the first lens group 311 and the first reflecting member 312; the second objective lens unit 32 includes a second lens group 321 with adjustable diopter, a second reflecting member 322 for changing the optical path direction, a third imaging mechanism 323 and a fourth imaging mechanism 324; the light entering the second objective lens unit 32 enters the third imaging mechanism 323 and the fourth imaging mechanism 324 sequentially along the second lens group 321 and the second reflecting member 322.

[0084] In one embodiment, the first image transmission path 11 sequentially includes, along the light incident direction: a first image transmission objective lens 111, a first image transmission rod lens 112 and a first image transmission eyepiece 113; wherein, the first image transmission objective lens 111 is used to collect the light on the object side; the first image transmission rod lens 112 is used to transmit the light 5 to the first image transmission eyepiece 113; the first image transmission eyepiece 113 is used to emit the incident light as parallel light; the second image transmission path 12 sequentially includes, along the light incident direction: a second image transmission objective lens 121, a second image transmission rod lens 122 and a second image transmission eyepiece 123; wherein, the second image transmission objective lens 121 is used to collect the light on the object side; the second image transmission rod lens 122 is used to transmit the light 5 to the second image transmission eyepiece 123; the second image transmission eyepiece 123 is used to emit the incident light as parallel light.

[0085] Optionally, the image transmission module 1 further includes a first lighting device 13, and the first lighting device 13 is disposed at the light emitting ends of the first image transmission eyepiece 113 and the second image transmission eyepiece 123.

[0086] Each module in the above optical imaging system can be implemented in whole or in part by software, hardware and their combination. Each of the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to each of the above modules.

[0087] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as Figure 7As shown in the figure. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it can perform image processing on the imaging signal output by the objective lens module 3. The display unit of the computer device is used to form a visually visible picture, which can be a display screen or a projection device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0088] Those skilled in the art can understand that Figure 7 the structure shown in the figure is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0089] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0090] The above-described embodiments only represent several implementation manners of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of this application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

1. A dual-channel optical imaging system, characterized in that, The dual-channel optical imaging system sequentially includes, along the optical axis from the object side to the image side: an image transmission module, a relay module, and an objective lens module; wherein, The image transmission module includes a first image transmission path and a second image transmission path. The lens groups in the first image transmission path and the lens groups in the second image transmission path are used to collect and transmit the light rays on the object side; The relay module includes a first relay mirror and a second relay mirror. The first relay mirror is used to reflect the light rays transmitted by the first image transmission path to the objective lens module, and the second relay mirror is used to reflect the light rays transmitted by the second image transmission path to the objective lens module; The objective lens module is used to image the light rays transmitted by the first image transmission path and the second image transmission path respectively.

2. The dual-channel optical imaging system according to claim 1, wherein, The first relay mirror includes a first inclined surface and a second inclined surface; the first inclined surface is used to reflect the light rays transmitted by the first image transmission path to the second inclined surface, and the second inclined surface is used to reflect the light rays to the objective lens module; The second relay mirror includes a third inclined surface and a fourth inclined surface; the third inclined surface is used to reflect the light rays transmitted by the second image transmission path to the fourth inclined surface, and the fourth inclined surface is used to reflect the light rays to the objective lens module.

3. The dual-channel optical imaging system according to claim 2, wherein The included angle between the first inclined surface and the second inclined surface is adjustable, so that the angle between the incident light rays on the first relay mirror and the light rays emitted by the first relay mirror changes; The included angle between the third inclined surface and the fourth inclined surface is adjustable, so that the angle between the incident light rays on the second relay mirror and the light rays emitted by the second relay mirror changes.

4. The dual-channel optical imaging system according to claim 1, characterized in that, The objective lens module includes: a first objective lens unit and a second objective lens unit; wherein, The first objective lens unit includes a first lens group with adjustable diopter, a first reflecting member for changing the optical path direction, a first imaging mechanism, and a second imaging mechanism; the light rays input into the first objective lens unit sequentially enter the first imaging mechanism and the second imaging mechanism along the first lens group and the first reflecting member; The second objective lens unit includes a second lens group with adjustable diopter, a second reflecting member for changing the optical path direction, a third imaging mechanism, and a fourth imaging mechanism; the light rays input into the second objective lens unit sequentially enter the third imaging mechanism and the fourth imaging mechanism along the second lens group and the second reflecting member.

5. The dual-channel optical imaging system according to claim 1, wherein The first image transmission path sequentially includes, along the light ray incident direction: a first image transmission objective lens, a first image transmission rod lens, and a first image transmission eyepiece; wherein, the first image transmission objective lens is used to collect the light rays on the object side; the first image transmission rod lens is used to transmit the light rays to the first image transmission eyepiece; the first image transmission eyepiece is used to emit the incident light rays as parallel light rays; The second image transmission path sequentially includes, along the light ray incident direction: a second image transmission objective lens, a second image transmission rod lens, and a second image transmission eyepiece; wherein, the second image transmission objective lens is used to collect the light rays on the object side; the second image transmission rod lens is used to transmit the light rays to the second image transmission eyepiece; the second image transmission eyepiece is used to emit the incident light rays as parallel light rays.

6. The dual-channel optical imaging system according to claim 5, wherein, The image transmission module further includes a first lighting device, which is disposed at the light exit ends of the first image transmission eyepiece and the second image transmission eyepiece.

7. An endoscope, characterized in that, An endoscope assembly and the optical imaging system according to any one of claims 1 to 6.

8. The endoscope according to claim 7, characterized in that, The endoscope assembly includes a surgical instrument, and the surgical instrument can sequentially reach the target object on the object side along the directions of the objective lens module, the relay module, and the image transmission module.

9. The endoscope according to claim 8, characterized in that, The endoscope assembly further includes a second lighting device, which is used to provide illumination for the surgical instrument.

10. The endoscope according to claim 7, characterized in that, The endoscope further includes a computer device, which is communicatively connected to the optical imaging system and is used for processing and displaying the imaging signals acquired by the optical imaging system.

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