Surgical lamp and optical surgical guidance system

Abstract

The application provides a surgical lamp and an optical surgical guidance system. The surgical lamp comprises a lamp body and a surgical guidance module arranged on the light-emitting side of the lamp body. The lamp body is provided with a visible light source capable of emitting a visible light beam to a surgical area. The surgical guidance module comprises a barrel, an excitation light unit and an optical combined imaging lens arranged side by side in the barrel. The side of the barrel away from the lamp body is provided with a light-transmitting window. The excitation light unit is capable of emitting at least an excitation light beam, which is emitted to the surgical area through the light-transmitting window. The optical combined imaging lens is capable of receiving external light entering from the light-transmitting window to realize visible light imaging, fluorescence imaging and thermal imaging. The doctor can not only collect various surgical field images through the surgical guidance module, but also project specific features and shapes on the surgical area for surgical guidance.

Description

Technical Field

[0001] This application relates to the field of optical surgical guidance systems, and in particular to a surgical light and an optical surgical guidance system. Background Technology

[0002] Modern surgery is evolving towards more minimally invasive, precise, safe, efficient, and humane procedures. Minimally invasive techniques, using the smallest incision path and with minimal tissue damage, enable the observation, diagnosis, and treatment of lesions within the body, representing the future direction of surgery. For example, equipment used in open surgery mainly includes surgical lights and external fluorescence devices. Surgical lights illuminate the surgical area; external fluorescence devices generate fluorescence images by reflecting a fluorescent beam of light onto the surgical area. These fluorescent images can be used to observe and identify tumors. In open surgery, these fluorescent images can guide surgeons to precisely remove tumors in the lesion area, reducing recurrence rates and improving patients' postoperative quality of life.

[0003] In related technologies, surgical lights, as essential lighting equipment for open surgical procedures, are placed above the surgical area and occupy an important space, but their usage rate is decreasing. Summary of the Invention

[0004] This application provides a surgical light and an optical surgical guidance system to solve the problem of low efficiency and limited functionality of surgical lights used for surgical illumination in related technologies.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, embodiments of this application provide a surgical lamp, comprising: a lamp body and a surgical guidance module disposed on the light-emitting side of the lamp body; the lamp body is provided with a visible light source, which is capable of emitting a visible light beam toward the surgical area; the surgical guidance module includes a cylindrical body, and an excitation light unit and an optical imaging lens disposed side-by-side within the cylindrical body; the cylindrical body has a light-transmitting window on the side away from the lamp body; the excitation light unit is capable of emitting at least an excitation light beam, which is directed toward the surgical area through the light-transmitting window; wherein, the optical imaging lens is configured to: receive external light rays incident from the light-transmitting window for visible light imaging, fluorescence imaging, and thermal imaging; the external light rays include the visible light beam that irradiates the surgical area and is reflected by the subject in the surgical area to the light-transmitting window, the fluorescence light emitted by the subject after being excited by the excitation light beam and emitted to the light-transmitting window, and the thermal radiation light generated by the subject in the surgical area and incident into the light-transmitting window.

[0006] In some implementations, the excitation light unit includes an excitation light source assembly and an optical shaping lens assembly. The excitation light source assembly includes an excitation light and a visible light laser. The excitation light is capable of emitting the excitation beam, and the visible light laser source is capable of emitting the visible light laser beam.

[0007] In some implementations, the optical shaping lens assembly includes a beam splitter and a reflector. The beam splitter is disposed on the optical axis of the excitation beam so that the excitation beam is transmitted through the beam splitter and then emitted to the light-transmitting window. The reflector is disposed on the optical axis of the visible light laser beam so that the visible light laser beam can be reflected by the reflector and then irradiated by the beam splitter, and then reflected by the reflective surface of the beam splitter and emitted to the light-transmitting window.

[0008] In some implementations, the excitation light unit and the optical imaging lens are arranged side by side inside the cylinder; along the axial direction of the cylinder, the orthographic projection of the excitation light unit onto the cylinder and the orthographic projection of the optical imaging lens onto the cylinder at least partially overlap.

[0009] In some implementations, the excitation light unit is elongated, and the optical imaging lens includes a lens barrel and an imaging lens group disposed within the lens barrel. The lens barrel includes a first segment and a second segment, one end of the first segment being connected to the second segment, and the port of the first segment away from the second segment being opposite to the light-transmitting window. The orthographic projection of the first segment onto the lens barrel is located at the orthographic projection of the second segment onto the lens barrel, and the orthographic projection of the excitation light unit onto the lens barrel at least partially overlaps with the orthographic projection of the second segment onto the lens barrel. The length direction of the excitation light unit, the axial direction of the lens barrel, and the axial direction of the lens barrel are all parallel to each other.

[0010] In some implementations, the length of the excitation light unit is less than or equal to the length of the first segment.

[0011] In some implementations, the excitation light unit and the optical imaging lens are arranged side by side in the cylinder along a first direction; the first section is cylindrical and the second section is elongated; the axial direction of the first section is parallel to the axial direction of the cylinder, the length direction of the second section is perpendicular to the axial direction of the first section, and the length direction of the second section is not parallel to the first direction.

[0012] In some implementations, the first segment is connected to the second segment on one side of the length direction of the second segment.

[0013] In some implementations, the excitation light unit and the optical imaging lens are arranged side-by-side in the cylinder along a first direction. The optical imaging lens further includes a visible light image sensor, a thermal imaging sensor, and a fluorescence image sensor arranged side-by-side along a second direction on the side of the imaging lens group opposite to the light-transmitting window. The imaging lens group includes a front lens group disposed in the first segment, and a first beam splitter, a second beam splitter, and a third beam splitter arranged in the second segment. The first beam splitter is used to transmit the visible light beam to the visible light image sensor and to reflect at least the thermal radiation light and the fluorescence light to the second beam splitter. The second beam splitter is used to reflect the thermal radiation light to the thermal imaging sensor and to transmit at least the fluorescence light to the third beam splitter. The third beam splitter is used to reflect at least the fluorescence light to the fluorescence image sensor. The second direction is parallel to the length direction of the second segment, and the second direction, the first direction, and the axis of the cylinder are perpendicular to each other.

[0014] In some implementations, the imaging lens group is configured such that: the visible light beam passes sequentially through the front lens group and the first beam splitter before exiting the visible light image sensor; the thermal radiation light, after passing through the front lens group, is reflected sequentially by the first beam splitter and the second beam splitter before exiting the thermal imaging sensor; and the fluorescent light, after passing through the front lens group, is reflected sequentially by the first beam splitter, the second beam splitter, and the third beam splitter before exiting the fluorescence image sensor.

[0015] In some implementations, the imaging lens group further includes a first rear lens group, a second rear lens group, and a third rear lens group. The first rear lens group is located between the first beam splitter and the visible light image sensor, the second rear lens group is located between the second beam splitter and the thermal imaging sensor, and the third rear lens group is located between the third beam splitter and the fluorescence image sensor. And / or, the imaging lens group further includes a first filter and a second filter. The first filter is disposed between the second beam splitter and the thermal imaging sensor, and the second filter is located between the third beam splitter and the fluorescence image sensor. The first filter is used to allow the thermal radiation light with a wavelength of 8μm-14μm to pass through, and the second filter is used to allow the fluorescence light with a wavelength of 780nm-830nm to pass through.

[0016] In some implementations, the visible light image sensor, the fluorescence image sensor, and the thermal imaging sensor are integrated into a single structure; and / or, the imaging surfaces of the visible light image sensor, the fluorescence image sensor, and the thermal imaging sensor are parallel to each other in pairs.

[0017] In some implementations, the excitation light is disposed within the lamp body, the visible light laser is disposed within the cylinder body, and the surgical guidance module further includes a control board disposed within the cylinder body. The visible light laser is electrically connected to the control board, and the excitation light extends into the cylinder body through an optical fiber and is electrically connected to the control board.

[0018] In some implementations, the optical shaping lens assembly includes a beam splitter, a reflector, a shaping lens assembly, and a baffle. The shaping lens assembly is disposed between the beam splitter and the excitation beam, so that the excitation beam is transmitted sequentially through the shaping lens assembly and the beam splitter before exiting into the light-transmitting window. The baffle is disposed between the visible light laser and the reflector. The baffle includes a light-emitting area and a light-blocking area. The light-emitting area is annular, so that the visible light laser forms an annular visible light ring after passing through the light-emitting area of ​​the baffle. Then, after being reflected by the reflector, it illuminates the beam splitter, and after being reflected by the reflective surface of the beam splitter, it exits into the light-transmitting window, so that the exit angle of the visible light laser beam passing through the beam splitter is greater than or equal to the exit angle of the excitation beam.

[0019] In some implementations, the baffle is provided with an annular light-emitting hole, which penetrates the baffle along the thickness direction to form the light-emitting area, and the light-emitting hole is inclined relative to the thickness direction of the baffle.

[0020] In some implementations, the light-emitting aperture includes a first aperture close to the reflector along the optical axis of the visible light laser and a second aperture away from the reflector, wherein the outer contour of the orthographic projection of the first aperture on the baffle is located within the outer contour of the orthographic projection of the second aperture on the baffle.

[0021] In some implementations, the optical axis of the visible light laser is parallel to the thickness direction of the baffle, and the optical axes of the visible light laser, the excitation light, and the cylinder are parallel to each other. The reflective surface of the beam splitter is arranged side by side and parallel to the mirror, so that the exit angle of the visible light laser beam passing through the beam splitter is equal to the exit angle of the excitation beam.

[0022] In some implementations, the collimating lens includes a collimating lens and a diffractive optical element, the diffractive optical element being located between the collimating lens and the beam-splitting element, the diffractive optical element being used for homogenizing and diverging light.

[0023] In some implementations, the light-transmitting window includes a first window and a second window. The first window is disposed on the light-emitting side of the excitation light unit so that the excitation beam and the visible light laser beam are emitted to the surgical area. The second window is disposed on the object side of the optical imaging lens to allow external light to enter.

[0024] In some implementations, the cylinder is a hollow cylindrical structure, and the cylinder is located in the central region of the lamp body.

[0025] In some implementations, the surgical light further includes a main control board and a display screen disposed within the light body. The main control board is electrically connected to the visible light source and the surgical guidance module. The display screen is electrically connected to the main control board and is disposed at the edge of the light body.

[0026] In some implementations, the number of visible light sources is multiple, and the multiple visible light sources are arranged in an array; and / or, the visible light source includes an LED light source and a reflector cup, with the LED light source disposed at the small opening end of the reflector cup.

[0027] In some implementations, a projection unit is also included, wherein the projection unit, the optical imaging lens, and the excitation light unit are arranged side by side inside the cylinder; the projection unit is capable of projecting a first image onto the surgical area through the light-transmitting window.

[0028] In some implementations, the excitation light unit, the optical imaging lens, and the projection unit are arranged side-by-side inside the cylinder along a first direction, which is perpendicular to the axial direction of the cylinder; along the axial direction of the cylinder, the orthographic projection of the projection unit onto the cylinder at least partially overlaps with the orthographic projection of the optical imaging lens onto the cylinder; or, the projection unit and the excitation light unit are arranged on the same side of the optical imaging lens along a second direction; the second direction, the first direction, and the axial direction of the cylinder are all perpendicular to each other.

[0029] In some implementations, the projection unit is a laser galvanometer projection unit, which includes a laser projection light source and a two-dimensional galvanometer. The galvanometer has a reflective surface, which is used to reflect the projection beam emitted by the projection unit to the surgical area. The two-dimensional galvanometer is rotatable relative to the cylinder in both a horizontal and a vertical direction, with the vertical direction being parallel to the axis of the cylinder.

[0030] Secondly, embodiments of this application also provide an optical surgical guidance system, including the surgical light described in the first aspect above.

[0031] The beneficial effects of the surgical lamp provided in this application are as follows: Compared with related technologies, this application sets the surgical guidance module on the light-emitting side of the lamp body. The surgical guidance module includes at least an excitation light unit capable of emitting an excitation beam and an optical combination imaging lens integrating visible light imaging, thermal imaging, and fluorescence imaging. In other words, doctors can not only acquire multiple surgical field images such as visible light images, thermal images, and fluorescence imaging through the surgical guidance module, but also project specific features and shapes, such as lesions and external markers, onto the surgical area for surgical guidance. This integrates the illumination functions of surgical lamps and the fluorescence imaging functions of in vitro fluorescence devices in related technologies, thereby effectively expanding the functionality of the surgical lamp and improving surgical efficiency. At the same time, by arranging the excitation light and the optical combination imaging lens side by side in the cylinder, when the surgical lamp can move, the cylinder can act as a handle to pull the lamp body. That is, doctors can pull the cylinder to move the entire surgical lamp to a position above the surgical area, facilitating doctor operation. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the surgical lamp provided in an embodiment of this application; Figure 2 for Figure 1 A schematic diagram of the assembly structure of the surgical light and surgical area from one perspective; Figure 3 for Figure 1 A schematic diagram of the assembly structure between the surgical guidance module and the main control board; Figure 4 for Figure 1 A schematic diagram of the surgical guidance module from one perspective; Figure 5 for Figure 4 A schematic diagram of the assembly structure of the components inside the cylinder of the surgical guidance module; Figure 6 The optical path diagrams of the excitation light unit provided in some embodiments of this application; Figure 7 for Figure 6 Cross-sectional view of the baffle in the intermediate excitation unit; Figure 8 Optical path diagrams of optical combined imaging lenses provided in some embodiments of this application; Figure 9The optical path diagram of the projection unit provided in some embodiments of this application; Figure 10 A schematic diagram of the hardware structure of a surgical lamp provided in some embodiments of this application; Figure 11 A schematic diagram of the hardware structure of a surgical lamp provided for other embodiments of this application.

[0034] Figure label: 100. Surgical area; 10. Lamp body; 101. Lampshade; 102. Lamp panel; 11. Visible light source; 20. Surgical guidance module; 30. Cylinder body; 301. First window; 302. Second window; 303. Third window; 31. Cylinder body; 32. Bottom cover; 33. Top cover; 40. Excitation light unit; 41. Excitation light source assembly; 411. Excitation light; 412. Visible light laser; 42. Optical shaping lens group; 43. Beam splitter; 44. Reflector; 45. Baffle; 450. Light exit aperture; 451. First aperture; 452. Second aperture; 46. Collimating lens; 47. Diffractive optical element; 50. Optical imaging lens; 510. Lens barrel; 51. Imaging lens group; 511. Front lens group; 512. First beam splitter; 513. Second beam splitter; 514. Third beam splitter; 515. First rear lens group; 516. Second rear lens group; 517. Third rear lens group; 518. First filter; 519. Second filter; 52. Visible light image sensor; 53. Thermal imaging sensor; 54. Fluorescence image sensor; 60. Projection unit; 61. Laser projection light source; 62. Two-dimensional galvanometer; 620. Galvanometer reflecting surface; 621. First motor; 622. Second motor; 71. Main control board; 72. Control board; 73. Display screen. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can refer to fixed connection, detachable connection, or integral connection; those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more, unless otherwise explicitly specified.

[0039] Modern surgery is evolving towards more minimally invasive, precise, safe, efficient, and humane procedures. Minimally invasive techniques, using the smallest incision path and with minimal tissue damage, enable the observation, diagnosis, and treatment of lesions within the body, representing the future direction of surgery. For example, equipment used in open surgery mainly includes surgical lights and external fluorescence devices. Surgical lights illuminate the surgical area; external fluorescence devices generate fluorescence images by reflecting a fluorescent beam of light onto the surgical area. These fluorescent images can be used to observe and identify tumors. In open surgery, these fluorescent images can guide surgeons to precisely remove tumors in the lesion area, reducing recurrence rates and improving patients' postoperative quality of life.

[0040] In related technologies, surgical lights, as essential lighting equipment for open surgical procedures, are placed above the surgical area and occupy an important space, but their usage rate is decreasing.

[0041] To address the aforementioned problems, this application provides a surgical light. (See reference...) Figures 1 to 3 The surgical light includes: a lamp body 10 and a surgical guidance module 20 disposed on the light-emitting side of the lamp body 10. The lamp body 10 is provided with a visible light source 11, which can emit a visible light beam to the surgical area 100. Figure 2 The area enclosed by the visible light source 11 and the surgical area 100 is a dotted and dashed area in the shape of an inverted V.

[0042] The aforementioned surgical lamp is also known as a shadowless lamp. Multiple visible light sources 11 are arranged in an array on the lamp body 10. (Reference) Figure 2 and Figure 3 The lamp body 10 includes a lampshade 101 and a lamp panel 102, with multiple visible light sources 11 arranged in an array on the lamp panel 102.

[0043] The visible light source 11 serves as the core component of the illumination. Each visible light source 11 may include, but is not limited to, an LED light source and a reflector cup, with the LED light source positioned at the narrow end of the reflector cup. The aforementioned LED light source features extremely long lifespan, low energy consumption, low heat generation, instant start-up, and easy dimming and color temperature control. As a cold light source, the LED itself facilitates efficient cold light illumination. The reflector cup reflects the visible light emitted by the LED light source, projecting it from the wide end of the reflector cup away from the narrow end, forming sub-beams. Multiple sub-beams illuminate the surgical area 100 from different angles, constituting a visible light beam illuminating the surgical area 100. This beam eliminates interfering shadows from instruments and the surgeon's hands, providing a clear and uniform surgical field.

[0044] The aforementioned lamp body 10 is suspended above the surgical area 100 via a bracket (not shown in the figure). This bracket may, but is not limited to, have two degrees of freedom: movement along the Z-axis and rotation around the Z-axis. This allows adjustment of the distance between the surgical lamp and the surgical area 100 in the Z-axis direction. Of course, the bracket may also have two, three, or four other degrees of freedom along the X and Y axes, enabling the surgical lamp to move and rotate freely in space to achieve precise illumination of the surgical area 100 at different locations.

[0045] It should be noted that the shape and outline of the aforementioned lamp panel 102 may be, but are not limited to, circular. In this way, multiple visible light sources 11 are arranged circumferentially along the lamp panel 102, and the surgical guidance module 20 is located in the central area of ​​the lamp panel 102. This arrangement reduces the impact on the visible light beams emitted by the visible light sources 11.

[0046] refer to Figure 3 The surgical guidance module 20 includes a cylindrical body 30, and an excitation light unit 40 and an optical imaging lens 50 arranged side by side within the cylindrical body 30. A light-transmitting window is provided on the side of the cylindrical body 30 away from the lamp body 10. The excitation light unit 40 is capable of emitting at least an excitation beam, which is directed towards the surgical area 100 through the light-transmitting window. The optical imaging lens 50 is configured to receive external light entering through the light-transmitting window for visible light imaging, fluorescence imaging, and thermal imaging. The external light includes a visible light beam that illuminates the surgical area 100 and is reflected by the subject in the surgical area 100 back to the light-transmitting window. Figure 2The visible light source 11 and the surgical area 100 are enclosed by a dotted and dashed area in the shape of an inverted V-shape; the subject is excited by the excitation beam and emits fluorescent light (and) into the light-transmitting window. Figure 2 The visible light laser beam in the conical solid-line image area enclosed by the surgical guidance module 20 and the surgical area 100 is the same. That is to say, when the excitation beam is irradiated onto the subject in the surgical area, the subject is excited and emits fluorescent light into the light-transmitting window, and the subject in the surgical area 100 generates thermal radiation light that enters the light-transmitting window. In other words, the external light entering the optical imaging lens 50 is full-spectrum light.

[0047] The excitation beam can be, but is not limited to, an excitation light 411 with a wavelength of 780-830 nm. In the embodiments of this application, the wavelength of the excitation light 411 can be, but is not limited to, 785 nm, 780 nm, or 790 nm.

[0048] The aforementioned thermal radiation rays, used for thermal imaging, can also be called far-infrared rays, with a wavelength range of 8μm-14μm.

[0049] This application integrates the surgical guidance module 20 on the light-emitting side of the lamp body 10. The surgical guidance module 20 includes at least an excitation light unit 40 capable of emitting an excitation beam and an optical combination imaging lens 50 that integrates visible light imaging, thermal imaging, and fluorescence imaging. In other words, doctors can not only acquire various surgical field images such as visible light images, thermal images, and fluorescence images through the surgical guidance module 20, but also project specific features and shapes, such as lesions and external markers, onto the surgical area 100 for surgical guidance. This integrates the illumination functions of surgical lamps and the fluorescence imaging functions of in vitro fluorescence devices in related technologies, thereby effectively expanding the functionality of surgical lamps and improving surgical efficiency. At the same time, the excitation light 411 and the optical combination imaging lens 50 are arranged side by side inside the cylinder 30. Thus, when the surgical lamp can move, the cylinder 30 can act as a handle to pull the lamp body 10. That is, doctors can pull the cylinder 30 to move the entire surgical lamp to a position above the surgical area 100, which is convenient for doctors to operate.

[0050] refer to Figure 4 and Figure 5 In some implementations, the cylinder 30 includes a cylinder body 31 and a bottom cover 32 and a top cover 33 covering both ends of the cylinder body 31. The bottom cover 32 is close to the lamp body 10, and the top cover 33 is provided with the aforementioned light-transmitting window. The cylinder body 31, the bottom cover 32, and the top cover 33 can be connected by snap-fit, screw-fit, or other detachable connections, which facilitates the disassembly and assembly of the components inside the cylinder 30 and subsequent maintenance.

[0051] It should be noted that the aforementioned cylinder 30 can be a hollow cylindrical structure. Specifically, the cylinder body 31 is a hollow cylindrical structure, and the bottom cover 32 and the top cover 33 are used to cover the two end caps of the cylinder body 31. Of course, it can also be a hollow polyhedral structure, a hollow polyhedral pyramid, a hollow polyhedral frustum, or a hollow multi-frustum structure; no specific limitation is made here.

[0052] refer to Figures 5 to 6 In some implementations, the excitation light unit 40 includes an excitation light source assembly 41 and an optical shaping lens group 42. The excitation light source assembly 41 is capable of emitting an excitation beam and a visible laser beam; Reference Figure 5 and Figure 6 In this embodiment, the excitation light source assembly 41 includes an excitation light 411 and a visible light laser 412. The excitation light 411 can emit an excitation beam, and the visible light laser 412 can emit a visible light laser beam.

[0053] Since the excitation light 411 is invisible light, it can still cause harm to the human body. By configuring the excitation light source assembly 41 to include the excitation light 411 and the visible light laser 412, the visible light laser beam passing through the beam splitter 43 can identify the excitation beam, thereby preventing doctors from accidentally entering the radiation range of the excitation beam and being harmed.

[0054] refer to Figures 5 to 6 The optical shaping lens assembly 42 includes a beam splitter 43, a reflector 44, a shaping lens assembly, and a baffle 45. The beam splitter 43 is disposed on the optical axis of the excitation beam, and the shaping lens assembly is disposed between the beam splitter 43 and the excitation beam, i.e., the beam splitter 43 is disposed on the light-emitting side of the excitation beam, so that the excitation beam is emitted to the light-transmitting window after being transmitted through the beam splitter 43. The baffle 45 is disposed between the visible light laser 412 and the reflector 44. The baffle 45 includes a light-emitting area and a light-blocking area. The light-emitting area is annular, so that the visible light laser 412 line reflected by the beam splitter 43 forms an annular visible light ring in the surgical area 100, so that the emission angle of the visible light laser beam passing through the beam splitter 43 is greater than or equal to the emission angle of the excitation beam. The visible light laser beam is used to identify the excitation beam.

[0055] In the excitation light source assembly 41 of this application, the excitation light 411 and visible light laser 412, after passing through the beam splitter 43, have an emission angle of visible light laser beam that is greater than or equal to the emission angle of the excitation light beam. The visible light laser beam serves to identify the excitation light beam, thereby marking the excitation light beam with the visible light laser beam. In this way, the emission area of ​​the visible laser irradiating the surgical area 100 can cover the emission area of ​​the excitation light 411. The doctor can determine the irradiation range of the excitation light 411 based on the irradiation range of the visible light laser 412, thereby effectively ensuring the doctor's safety.

[0056] The optical axis of the excitation beam and the optical axis of the visible light laser beam can be, but are not limited to, parallel. Thus, the reflecting surface of the beam splitter 43 can be parallel to the reflector 44. (See reference) Figure 6 The optical axis of the visible light laser 412 is parallel to the thickness direction of the baffle 45. The optical axes of the visible light laser 412, the excitation light 411, and the axis of the cylinder 30 are all parallel to each other. The reflective surface of the beam splitter 43 is arranged side by side and parallel to the reflector 44, so that the exit angle of the visible light laser beam passing through the beam splitter 43 is equal to the exit angle of the excitation beam. This not only helps to make the exit angle of the visible light laser beam passing through the beam splitter 43 equal to the exit angle of the excitation beam, but also reduces the radial space occupied by the excitation light unit 40 in the cylinder 30, which is beneficial for the reduction of the diameter of the cylinder 30. Of course, the angle formed between the optical axis of the excitation beam and the optical axis of the visible light laser beam is less than 20°. Thus, by adjusting the angle between the reflective surface of the beam splitter 43 and the reflector 44, the exit angle of the visible light laser beam passing through the beam splitter 43 can be made greater than or equal to the exit angle of the excitation beam.

[0057] It should be noted that the excitation beam 411 and the visible light laser 412 mentioned above can also be integrated into a laser capable of emitting an excitation beam and a visible light laser beam, without making specific limitations here.

[0058] refer to Figure 6 In this embodiment, the collimating lens includes a collimating lens 46 and a diffractive optical element 47. The diffractive optical element 47 is located between the collimating lens 46 and the beam splitter 43. The diffractive optical element 47 is used for homogenizing and diffracting light.

[0059] The collimating lens 46 mentioned above serves to collimate the light, and the diffractive optical element 47 mainly serves to homogenize and diffuse the light, making the excitation beam more uniformly emitted and the excitation beam illuminating the surgical area 100 more uniform, thereby improving the imaging quality of fluorescence imaging.

[0060] refer to Figure 3 and Figure 5 In some implementations, the excitation light 411 is disposed within the lamp body 10, and the visible light laser 412 is disposed within the cylinder 30. This helps to reduce the space occupied by the excitation light unit 40, thereby facilitating the reduction of the diameter of the cylinder 30.

[0061] refer to Figure 6 and Figure 7A baffle 45 is disposed between the visible light laser 412 and the reflector 44. The baffle 45 includes a light-emitting area and a light-blocking area. The light-emitting area is annular so that the visible light laser 412 line reflected by the beam splitter 43 forms an annular visible light ring in the surgical area 100, and the emission area of ​​the excitation beam in the surgical area 100 is located within the visible light ring.

[0062] It should be noted that when the baffle 45 is installed, the thickness direction of the baffle 45 may, but is not limited to, be parallel to the optical axis of the visible light laser 412.

[0063] refer to Figure 7 The baffle 45 is provided with an annular light-emitting hole 450, which extends through the baffle 45 along its thickness direction to form a light-emitting area. The axis of the light-emitting hole 450 is inclined relative to the thickness direction of the baffle 45. This allows the light emitted by the visible laser 412 to form an annular visible light ring after passing through the light-emitting hole, while the area without visible light forms a light-blocking area. Thus, while the visible laser serves to identify the invisible excitation light 411, it not only reduces the risk of mutual interference between the two but also allows the size of the visible light ring to be adjusted by changing the angle between the axis of the light-emitting hole 450 and the thickness direction of the baffle 45, making it suitable for surgical areas 100 of different sizes, thus demonstrating strong adaptability.

[0064] refer to Figure 7 In this embodiment, the light-emitting aperture 450 includes a first aperture 451 close to the reflector 44 along the optical axis of the visible light laser 412 and a second aperture 452 away from the reflector 44. The outer contour of the orthographic projection of the first aperture 451 on the baffle 45 is located within the outer contour of the orthographic projection of the second aperture 452 on the baffle 45. That is, in the cross-section of the baffle 45 in the thickness direction, the light-emitting aperture 450 is outwardly octagonal, with the smaller end close to the visible light laser 412. In this way, the light emitted from the visible light laser 412 forms an annular aperture after passing through the light-emitting aperture 450 on the baffle 45, and then forms a visible aperture in the surgical area 100 after being reflected by the reflector 44 and the beam splitter 43. Since the visible light laser 412 is visible, while the excitation beam is invisible but can cause harm to the human body, marking the excitation beam with a visible light laser beam can effectively prevent harm to the doctor, thereby ensuring the doctor's safety.

[0065] It should be noted that the excitation unit 40 is elongated, and its length is parallel to the axis of the cylinder 30. The excitation unit 40 can be a polyprism structure such as a quadrangular prism or a pentagonal prism, or it can also be a cylindrical structure; no specific limitation is made here.

[0066] refer to Figure 5 and Figure 8The optical imaging lens 50 includes a lens barrel 510 and an imaging lens group 51 disposed in the lens barrel 510. The lens barrel 510 includes a first segment 510a and a second segment 510b. One end of the first segment 510a is connected to the second segment 510b. The port of the first segment 510a away from the second segment 510b is opposite to the light-transmitting window. The orthographic projection of the first segment 510a in the barrel 30 is located at the orthographic projection of the second segment 510b in the barrel 30. The orthographic projection of the excitation light unit 40 in the barrel 30 overlaps with the orthographic projection of the second segment 510b in the barrel 30.

[0067] The overlap between the orthographic projection of the excitation unit 40 on the cylinder 30 and the orthographic projection of the second segment 510b on the cylinder 30 includes partial overlap, and also includes complete overlap. This complete overlap means that the orthographic projection of the excitation unit 40 on the cylinder 30 is entirely within the orthographic projection of the second segment 510b on the cylinder 30.

[0068] By placing the orthographic projection of the first segment 510a onto the orthographic projection of the second segment 510b onto the cylinder 30, it is beneficial to reduce the space occupied by the lens barrel 510. At the same time, by overlapping the orthographic projection of the excitation unit 40 onto the cylinder 30 with the orthographic projection of the second segment 510b onto the cylinder 30, the space inside the cylinder 30 can be fully utilized, thereby improving the space utilization rate inside the cylinder 30.

[0069] It should be noted that the maximum length of the excitation unit 40 is less than or equal to the length of the first segment 510a. This allows for full utilization of the area near the light-transmitting window of the second segment 510b. Thus, the excitation unit 40 can be rationally arranged in the area near the light-transmitting window of the second segment 510b, ensuring that the orthographic projection of the excitation unit 40 onto the cylinder 30 fully or partially overlaps with the orthographic projection of the second segment 510b onto the cylinder 30. Conversely, if the length of a portion of the excitation unit 40 is less than or equal to the length of the first segment 510a, this portion can also be rationally arranged in the area near the light-transmitting window of the second segment 510b, ensuring that the orthographic projection of the excitation unit 40 onto the cylinder 30 partially overlaps with the orthographic projection of the second segment 510b onto the cylinder 30. No specific limitation is made here.

[0070] refer to Figure 5 and Figure 8 In this embodiment, the excitation light unit 40 and the optical imaging lens 50 are along the first direction ( Figure 5The excitation light unit 40 and the optical imaging lens 50 are arranged side by side in the cylinder 30. At this time, the orthogonal projection of the excitation light unit 40 on the cylinder 30 and the orthogonal projection of the optical imaging lens 50 on the cylinder 30 partially overlap or completely overlap in the first direction.

[0071] refer to Figure 8 In some implementations, the excitation light unit 40 and the optical imaging lens 50 are arranged side by side within the cylinder 30 along a first direction, and the optical imaging lens 50 also includes a second direction ( Figure 8 The visible light image sensor 52, thermal image sensor 53, and fluorescence image sensor 54 are arranged side-by-side in the imaging lens group 51 on the side opposite to the light-transmitting window (in the direction indicated by the middle arrow X). The imaging lens group 51 includes a front lens group 511 disposed in the first segment 510a, and a first beam splitter 512, a second beam splitter 513, and a third beam splitter 514 arranged in the second segment 510b. That is, the first beam splitter 512, the second beam splitter 513, and the third beam splitter 514 are arranged one-to-one with the visible light image sensor 52, the thermal image sensor 53, and the fluorescence image sensor 54 along the second direction.

[0072] It should be noted that the second direction ( Figure 5 The X-axis direction in the middle is parallel to the length direction of the second segment 510b, and the second direction, the first direction, and the axial direction of the cylinder 30 are parallel. Figure 5 The Z-axis direction in the model is perpendicular to each other.

[0073] With this setup, the space on both sides of the optical imaging lens 50 in the first direction can be used to make reasonable use of the space, and the various components in the excitation light unit 40 can be arranged in a reasonable manner, which is conducive to improving the space utilization rate inside the cylinder 30.

[0074] It should be noted that the visible light image sensor 52, the fluorescence image sensor 54, and the thermal imaging sensor 53 are integrated into a single structure. That is, they can, but are not limited to, be mounted on the same circuit board to form a single integrated structure, thus simplifying the assembly process.

[0075] refer to Figure 5 and Figure 8 In this embodiment, the first segment 510a of the lens barrel 510 is cylindrical, and the second segment 510b of the lens barrel 510 is cuboid. The axial direction of the first segment 510a is parallel to the axial direction of the barrel 30, and the length direction of the second segment 510b is parallel to the second direction (…). Figure 5 The X-axis direction of the first segment 510a is parallel to the first X-axis direction. The length direction of the second segment 510b is perpendicular to the axial direction of the first segment 510a. The axial direction of the first segment 510a, the length direction of the second segment 510b, and the first X-axis direction are parallel to the first X-axis direction. Figure 5 The Y-axis direction in the diagram is perpendicular to each other. (Reference) Figure 5In one possible implementation, the first segment 510a is connected to one side of the second segment 510b along its length. This makes the lens barrel 510 generally L-shaped. Alternatively, the first segment 510a can be connected to the middle region of the second segment 510b along its length. This makes the lens barrel 510 generally T-shaped.

[0076] It should be noted that the first segment 510a can be a cylindrical, near-cylindrical, or square tube structure, and the second segment 510b can be a cuboid with a square or rectangular cross-section, or a cuboid with rounded corners. Of course, the length direction of the second segment 510b can be parallel to the second direction, that is, perpendicular to the first direction; it can also be in the same plane as the first direction (parallel to the XOY plane); it can intersect both the first and second directions; or it can be two directions in different planes from the first direction, intersecting the projection of the first direction onto the XOY plane. In other words, the length direction of the second segment 510b is not parallel to the first direction; however, this is not specifically limited.

[0077] refer to Figure 3 and Figure 8 In some implementations, the imaging surfaces of the visible light image sensor 52, the fluorescence image sensor 54, and the thermal imaging sensor 53 are parallel to each other.

[0078] Correspondingly, refer to Figure 3 , Figure 6 , Figure 8 and Figure 9 The light-transmitting window includes a first window 301 and a second window 302. The first window 301 is disposed on the light-emitting side of the excitation light unit 40 to allow the excitation beam and visible laser beam to be emitted into the surgical area 100. The second window 302 is disposed on the object side of the optical imaging lens 50 to allow external light to enter. This design reduces the mutual interference between different beams from the excitation light unit 40, the optical imaging lens 50, and the projection unit 60, thereby improving the imaging quality.

[0079] The first beam splitter 512 is used to transmit a visible light beam to the visible light image sensor 52 and to reflect at least thermal radiation and fluorescence light onto the second beam splitter 513. In the design process, the first beam splitter 512 transmits visible light with wavelengths of 400nm-760nm while reflecting infrared light with wavelengths of 780nm-1mm onto the second beam splitter 513, thus separating the visible and infrared light. The infrared light includes thermal radiation with wavelengths of 8μm-14μm and an excitation beam used to form fluorescence light.

[0080] The aforementioned second beam splitter 513 is used to reflect thermal radiation light to the thermal imaging sensor 53 and to transmit at least fluorescent light to the third beam splitter 514. In the design, the second beam splitter 513 can be used, but is not limited to, with a wavelength of 1100 nm as the boundary, to allow laser light smaller than 1100 nm to pass through, and to reflect laser light greater than or equal to 1100 nm to the thermal imaging sensor 53. Therefore, a first filter 518 needs to be placed between the second beam splitter 513 and the thermal imaging sensor 53, so that thermal radiation light, i.e., thermal radiation light with wavelengths of 8 μm-14 μm, passes through the first filter 518 and is emitted to the thermal imaging sensor 53.

[0081] The aforementioned third beam splitter 514 is used to reflect fluorescent light onto the fluorescence image sensor 54. During the design of the third beam splitter 514, the reflection wavelength can be directly set to enable the reflection of fluorescent light onto the fluorescence image sensor 54. Alternatively, the reflection wavelength of the third beam splitter 514 can be designed to reflect near-infrared laser light. Furthermore, by placing a second filter 519 between the third beam splitter 514 and the fluorescence image sensor 54, fluorescent light with wavelengths of, for example, 780nm-830nm can be reflected.

[0082] With the above configuration, the visible light beam passes sequentially through the front lens group 511 and the first beam splitter 512 before exiting to the visible light image sensor 52; the thermal radiation light, after passing through the front lens group 511, is reflected sequentially by the first beam splitter 512 and the second beam splitter 513 before exiting to the thermal imaging sensor 53; the fluorescent light, after passing through the front lens group 511, is reflected sequentially by the first beam splitter 512, the second beam splitter 513, and the third beam splitter 514 before exiting to the fluorescence image sensor 54. In this way, on the one hand, the optical imaging lens 50 can realize visible light imaging, thermal imaging and fluorescence imaging, with a high degree of integration and small space occupation, which is conducive to the reduction of the diameter of the tube 30. This not only reduces the installation area on the lamp plate 102, but also indirectly increases the number of visible light sources 11, which is conducive to improving brightness and making it easier for doctors to hold. On the other hand, it not only improves the energy of fluorescence imaging, but also makes the optical imaging lens 50 widely applicable and requires little modification by simply replacing the first filter 518 and the second filter 519.

[0083] During the design process, the filtering range of the second filter 519 can be designed to allow fluorescent light with a wavelength of 780nm-830nm to pass through. Of course, the filtering range of the second filter 519 can also be a small range of 10nm wavelength, such as 780nm-790nm, 790nm-800nm, 800nm-810nm, 810nm-820nm, 820nm-830nm; or, the filtering range of the second filter 519 can be any smaller range of 5nm wavelength within the above-mentioned 780nm-830nm range; or, the filtering range of the second filter 519 can be any medium range of 15nm wavelength within the above-mentioned 780nm-830nm range. No specific limitation is made here.

[0084] To further improve image quality, reference Figure 8 In some implementations, the imaging lens group 51 further includes a first rear lens group 515, a second rear lens group 516, and a third rear lens group 517. The first rear lens group 515 is located between the first beam splitter 512 and the visible light image sensor 52, the second rear lens group 516 is located between the second beam splitter 513 and the thermal imaging sensor 53, and the third rear lens group 517 is located between the third beam splitter 514 and the fluorescence image sensor 54.

[0085] The first rear lens group 515, the second rear lens group 516, and the third rear lens group 517 may, but are not limited to, consist of one or more lenses. Based on the front lens group 511, the user can design the structure of the imaging lens group 51 by combining the first rear lens group 515, the second rear lens group 516, and the third rear lens group 517, according to the focal length of visible light imaging, thermal imaging, and fluorescence imaging, so that the visible light beam illuminating the imaging surface of the visible light image can be clearly imaged; the thermal radiation light illuminating the imaging surface of the thermal imaging sensor 53 can be clearly imaged; and the fluorescence light illuminating the imaging surface of the fluorescence image sensor 54 can be imaged.

[0086] It should be noted that the arrangement of the various components in the imaging lens group 51 is an inverted L-shape.

[0087] refer to Figure 5 and Figure 8 , Of course, the first rear lens group 515 can also be set on the side of the second beam splitter 513 away from the thermal imaging sensor 53. By reasonably designing the first beam splitter 512, the second beam splitter 513 and the third beam splitter 513, the imaging lens group 51 can realize visible light imaging, thermal imaging and fluorescence imaging. In this way, the arrangement of each component in the imaging lens group 51 is an inverted T-shape.

[0088] refer to Figure 3and Figure 9 In this embodiment, in some implementations, the surgical lamp further includes a projection unit 60, and the excitation light unit 40, the optical imaging lens 50, and the projection unit 60 are arranged side by side along a first direction within the cylindrical body 30. The projection unit 60 can project a first image onto the surgical area 100 through a light-transmitting window.

[0089] The first image mentioned above can be an image with specific features and shapes, such as diseased tissue or external markers.

[0090] In this way, not only can the first image be projected onto the surgical area 100 through the projection unit 60 for surgical guidance, thereby improving the effectiveness of the surgical light; but also, by rationally arranging the excitation light unit 40 and the projection unit 60 side by side along the first direction on both sides of the optical combined imaging lens 50, the surgical light can achieve the goals of multifunctionality, integration, and improved space utilization within the cylinder 30.

[0091] It should be noted that the projection unit 60 can also be configured as needed. When the projection unit 60 is installed inside the cylinder 30 of the surgical lamp, a third window 303 needs to be provided on the cylinder 30. The third window 303 is correspondingly located on the light-emitting side of the projection unit 60, for the projection beam of the projection unit 60 to be emitted into the surgical area 100. That is, the first window 301, the second window 302, and the third window 303 are respectively arranged along the first direction on the light-emitting side of the excitation light unit 40, the optical imaging lens 50, and the projection unit 60. This reduces the mutual interference between different beams of the excitation light unit 40, the optical imaging lens 50, and the projection unit 60, thereby improving the imaging quality.

[0092] refer to Figure 3 and Figure 9 In this embodiment, the projection unit 60 is a laser galvanometer projection unit. The projection unit 60 includes a laser projection light source 61 and a two-dimensional galvanometer 62. The galvanometer has a galvanometer reflective surface 620, which is used to reflect the projection beam emitted by the projection unit 60 to the surgical area 100. The two-dimensional galvanometer 62 can rotate relative to the cylinder 30 around the horizontal direction and around the vertical direction. The vertical direction is parallel to the axis of the cylinder 30.

[0093] The aforementioned projection light source is a collection of multiple low-power visible light lasers 412, including red, green, yellow, and blue light. The projection unit 60 also includes a base, and the laser projection light source 61 is mounted on the base outside the galvanometer.

[0094] The aforementioned two-dimensional galvanometer 62 may include, but is not limited to, a galvanometer with a galvanometer reflecting surface 620, a first motor 621, and a second motor 622. The first motor 621 is a micro motor M1, which drives the galvanometer along... Figure 9The vertical direction of the mirror rotates relative to the cylinder 30. The second motor 622 is a micro motor M2, which drives the galvanometer to rotate along the vertical direction. Figure 9 The direction of the beam rotates relative to the cylinder 30, so that the projection beam is emitted through the third window 303 to the surgical area 100, thereby realizing the projection of the first image onto the surgical area 100.

[0095] In some other implementations, the projection unit 60 can also be an LED projector (not shown in the figure). Specifically, the projection unit 60 includes a matrix LED light source module, a light homogenizing system, an MDM chip / digital micromirror device, and a projection lens assembly.

[0096] refer to Figure 3 and Figure 5 In some implementations, the surgical guidance module 20 also includes a control board 72 disposed within the cylindrical body 30. The visible light laser 412 and the projection unit 60 are electrically connected to the control board 72, and the excitation light 411 extends into the cylindrical body 30 through an optical fiber and is electrically connected to the control board 72. This allows for a reduction in the volume of the cylindrical body 30, while improving the stability of the excitation beam propagation by allowing the excitation light 411 to extend into the cylindrical body 30 through an optical fiber and be electrically connected to the control board 72, thereby effectively improving the imaging quality of fluorescence imaging.

[0097] refer to Figure 1 and Figure 10 and Figure 11 In some implementations, the surgical light also includes a main control board 71 and a display screen 73 disposed within the light body 10. The main control board 71 is electrically connected to the visible light source 11 and the surgical guidance module 20; that is, the excitation light 411 can be disposed on the main control board 71 and electrically connected to the control board 72 via optical fiber, while the visible light laser 412 is directly disposed on the control board 72. This results in a high degree of integration for the surgical guidance module 20. Simultaneously, the display screen 73 is electrically connected to the main control board 71 and is disposed at the edge of the light body 10. The main control board 71 refers to the main circuit board in the surgical light used for control; the surgical light is controlled through the main control board 71.

[0098] The aforementioned display screen 73 is used to display different images of the surgical area 100 acquired by the surgical guidance module 20. This display screen 73 can be one component of the surgical light, such as... Figure 10 As shown. Of course, the display screen 73 can also be a device or equipment, such as a computer, that includes the display screen 73, independent of the surgical light.

[0099] By placing the display screen 73 on the lamp body 10, the surgical light becomes more multifunctional and has a higher degree of integration. At the same time, placing the display screen 73 at the edge of the lamp body 10 reduces its impact on the surgical light and also reduces the number of components used to fix and install the display screen 73, thus achieving both multifunctionality and structural simplicity in the surgical light.

[0100] It should be noted that the display screen 73 can be a touch screen, integrating the display panel and control panel together. Alternatively, the display screen 73 can also be a screen solely for display purposes, referred to as a monitor, interacting with other display panels.

[0101] refer to Figure 10 The main control board 71 is equipped with a controller, a power supply module and an image processing module. The power supply module on the main control board 71 is used to provide power to the visible light source 11 and the surgical guidance module 20. The visible light source 11 and the surgical guidance module 20 are both electrically connected to the controller, and the controller controls the visible light source 11 and the surgical guidance module 20.

[0102] Specifically, the control process of the surgical light is as follows: In response to a user command, the controller controls the visible light source 11 to emit a visible light beam toward the surgical area 100 to illuminate the surgical area 100; In response to user commands, the controller excitation light unit 40 emits a visible light laser beam and an excitation beam to the surgical area 100. The excitation beam illuminates the surgical area 100 and is then reflected by the fluorescent beam excited by the subject to the fluorescent light in the light-transmitting window. The fluorescent light and the subject in the surgical area 100 generate thermal radiation light that can enter the light-transmitting window. External light, such as the visible light laser 412, enters the optical combination imaging lens 50 of the surgical guidance module 20 and is reflected by the visible light image sensor 52, thermal imaging sensor 53, and fluorescence image sensor 54 of the optical combination imaging lens 50. Visible light imaging, fluorescence imaging, and thermal imaging are completed, thus realizing the acquisition of surgical field images such as visible light images, fluorescence images, and thermal images of the surgical area 100.

[0103] The image processing module processes the various surgical field images acquired by the surgical guidance module 20 and displays the corresponding images on the display screen 73.

[0104] In response to a user command, the controller controls the projection light source to project light onto the surgical area 100, displaying a first image in the surgical area 100. This image can be a partial image of multiple labeled surgical field images; that is, the doctor can label the multiple surgical field images acquired above as needed to complete the designation of the first image.

[0105] The projection unit 60 projects the first image onto the surgical area 100 based on the acquired first image.

[0106] To address the aforementioned issues, this application also provides an optical surgical guidance system, including a surgical light.

[0107] The structure of this surgical lamp is the same as that in any of the embodiments described above.

[0108] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A surgical light, characterized in that, include: The lamp body (10) is provided with a visible light source (11), which can emit a visible light beam toward the surgical area (100); The surgical guidance module (20) is located on the light-emitting side of the lamp body (10). The surgical guidance module (20) includes a cylindrical body (30), an excitation light unit (40) and an optical imaging lens (50) arranged side by side in the cylindrical body (30). A light-transmitting window is provided on the side of the cylindrical body (30) away from the lamp body (10). The excitation light unit (40) is at least able to emit an excitation beam, and the excitation beam is directed toward the surgical area (100) through the light-transmitting window. The optical imaging lens (50) is configured to receive external light rays entering through the light-transmitting window and perform visible light imaging, fluorescence imaging, and thermal imaging. The external light rays include visible light rays that irradiate the surgical area (100) and are reflected by the subject in the surgical area (100) to the light-transmitting window, fluorescent light rays emitted by the subject after being irradiated by the excitation light rays, and thermal radiation rays generated by the subject in the surgical area (100) that enter the light-transmitting window. The excitation light unit (40) includes an excitation light source assembly (41) and an optical shaping lens assembly (42). The excitation light source assembly (41) includes an excitation light (411) and a visible light laser (412). The excitation light (411) can emit the excitation light beam, and the visible light laser (412) source can emit the visible light laser beam. The optical shaping lens assembly (42) includes a beam splitter (43), a reflector (44), a shaping lens assembly, and a baffle (45). The shaping lens assembly is disposed between the beam splitter (43) and the excitation beam, so that the excitation beam is transmitted through the shaping lens assembly and the beam splitter (43) in sequence and then exits into the light-transmitting window. The baffle (45) is disposed between the visible light laser (412) and the reflector (44). The baffle (45) encloses... The light-emitting area includes a light-emitting area and a light-shielding area. The light-emitting area is annular, so that the visible light laser (412) forms an annular visible light ring after passing through the light-emitting area of ​​the baffle (45). Then, after being reflected by the reflector (44), it illuminates the beam splitter (43), and after being reflected by the reflective surface of the beam splitter (43), it exits into the light-transmitting window, so that the exit angle of the visible light laser beam passing through the beam splitter (43) is greater than or equal to the exit angle of the excitation beam.

2. The surgical light according to claim 1, characterized in that, The excitation light unit (40) and the optical imaging lens (50) are arranged side by side inside the cylindrical body (30); Along the axial direction of the cylinder (30), the orthographic projection of the excitation light unit (40) onto the cylinder (30) at least partially overlaps with the orthographic projection of the optical combination imaging lens (50) onto the cylinder (30).

3. The surgical light according to claim 2, characterized in that, The excitation light unit (40) is elongated. The optical imaging lens (50) includes a lens barrel (510) and an imaging lens group (51) disposed within the lens barrel (510). The lens barrel (510) includes a first section and a second section. One end of the first section is connected to the second section. The port of the first section away from the second section is opposite to the light-transmitting window. The orthographic projection of the first section on the cylinder (30) is located at the orthographic projection of the second section on the cylinder (30). The orthographic projection of the excitation light unit (40) on the cylinder (30) and the orthographic projection of the second section on the cylinder (30) at least partially overlap. The length direction of the excitation light unit (40), the axial direction of the lens tube (510), and the axial direction of the cylinder (30) are parallel to each other.

4. The surgical light according to claim 3, characterized in that, The length of the excitation unit (40) is less than or equal to the length of the first segment.

5. The surgical light according to claim 3, characterized in that, The excitation light unit (40) and the optical imaging lens (50) are arranged side by side in the cylinder (30) along the first direction; The first segment is cylindrical, and the second segment is elongated. The axial direction of the first segment is parallel to the axial direction of the cylinder (30), and the length direction of the second segment is perpendicular to the axial direction of the first segment. The length direction of the second segment is not parallel to the first direction.

6. The surgical light according to claim 5, characterized in that, The first segment is connected to the second segment on one side of the length direction of the second segment.

7. The surgical lamp according to any one of claims 3-6, characterized in that, The excitation light unit (40) and the optical imaging lens (50) are arranged side by side in the cylinder (30) along the first direction. The optical imaging lens (50) also includes a visible light image sensor (52), a thermal imaging sensor (53) and a fluorescence image sensor (54) arranged side by side in the second direction on the side of the imaging lens group (51) away from the light-transmitting window. The imaging lens group (51) includes a front lens group (511) disposed in the first segment, and a first beam splitter (512), a second beam splitter (513) and a third beam splitter (514) arranged in the second segment. The first beam splitter (512) is used to transmit the visible light beam to the visible light image sensor (52) and to reflect at least the thermal radiation light and the fluorescent light to the second beam splitter (513); the second beam splitter (513) is used to reflect the thermal radiation light to the thermal imaging sensor (53) and to transmit at least the fluorescent light to the third beam splitter (514); the third beam splitter (514) is used to reflect at least the fluorescent light to the fluorescent image sensor (54); the second direction is parallel to the length direction of the second segment, and the second direction, the first direction and the axis of the cylinder (30) are perpendicular to each other.

8. The surgical light according to claim 7, characterized in that, The imaging lens group (51) is configured such that: the visible light beam passes sequentially through the front lens group (511) and the first beam splitter (512) before exiting the visible light image sensor (52); the thermal radiation light passes through the front lens group (511), and after being reflected by the first beam splitter (512) and the second beam splitter (513), it exits the thermal imaging sensor (53); the fluorescent light passes through the front lens group (511), and after being reflected by the first beam splitter (512), the second beam splitter (513), and the third beam splitter (514), it exits the fluorescent image sensor (54).

9. The surgical light according to claim 7, characterized in that, The imaging lens group (51) further includes a first rear lens group (515), a second rear lens group (516), and a third rear lens group (517). The first rear lens group (515) is located between the first beam splitter (512) and the visible light image sensor (52). The second rear lens group (516) is located between the second beam splitter (513) and the thermal imaging sensor (53). The third rear lens group (517) is located between the third beam splitter (514) and the fluorescence image sensor (54). And / or, the imaging lens group (51) further includes a first filter (518) and a second filter (519), the first filter (518) being disposed between the second beam splitter (513) and the thermal imaging sensor (53), and the second filter (519) being located between the third beam splitter (514) and the fluorescence image sensor (54); wherein, the first filter (518) is used to allow the thermal radiation light with a wavelength of 8μm-14μm to pass through, and the second filter (519) is used to allow the fluorescence light with a wavelength of 780nm-830nm to pass through.

10. The surgical light according to claim 7, characterized in that, The visible light image sensor (52), the fluorescence image sensor (54), and the thermal imaging sensor (53) are integrated into one unit. And / or, the imaging surfaces of the visible light image sensor (52), the fluorescence image sensor (54), and the thermal imaging sensor (53) are parallel to each other.

11. The surgical light according to any one of claims 1-6 and 8-10, characterized in that, The excitation light (411) is disposed inside the lamp body (10), the visible light laser (412) is disposed inside the cylinder (30), the surgical guidance module (20) also includes a control board (72) disposed inside the cylinder (30), the visible light laser (412) is electrically connected to the control board (72), and the excitation light (411) extends into the cylinder (30) through an optical fiber and is electrically connected to the control board (72).

12. The surgical light according to any one of claims 1-6 and 8-10, characterized in that, The baffle (45) is provided with an annular light-emitting hole (450). The light-emitting hole (450) penetrates the baffle (45) along the thickness direction to form the light-emitting area. The light-emitting hole (450) is inclined relative to the thickness direction of the baffle (45).

13. The surgical light according to claim 12, characterized in that, The light-emitting aperture (450) includes a first aperture (451) close to the reflector (44) along the optical axis of the visible light laser (412) and a second aperture (452) away from the reflector (44). The outer contour of the orthographic projection of the first aperture (451) on the baffle (45) is located within the outer contour of the orthographic projection of the second aperture (452) on the baffle (45).

14. The surgical light according to claim 1, characterized in that, The optical axis of the visible light laser (412) is parallel to the thickness direction of the baffle (45). The optical axis of the visible light laser (412), the optical axis of the excitation light (411), and the axial direction of the cylinder (30) are parallel to each other. The reflective surface of the beam splitter (43) is arranged side by side and parallel to the reflector (44) so ​​that the emission angle of the visible light laser beam passing through the beam splitter (43) is equal to the emission angle of the excitation beam.

15. The surgical light according to any one of claims 13-14, characterized in that, The shaping lens group includes a collimating lens (46) and a diffractive optical element (47), the diffractive optical element (47) being located between the collimating lens (46) and the beam splitter (43), and the diffractive optical element (47) being used for homogenizing and diverging light.

16. The surgical lamp according to any one of claims 1-6 and 8-10, characterized in that, It also includes a projection unit (60), the projection unit (60), the optical imaging lens (50) and the excitation light unit (40) are arranged side by side inside the cylinder (30); the projection unit (60) can project a first image onto the surgical area (100) through the light-transmitting window.

17. The surgical light according to claim 16, characterized in that, The excitation light unit (40), the optical imaging lens (50), and the projection unit (60) are arranged side by side inside the cylinder (30) along a first direction, which is perpendicular to the axial direction of the cylinder (30). Along the axial direction of the cylinder (30), the orthographic projection of the projection unit (60) onto the cylinder (30) at least partially overlaps with the orthographic projection of the optical imaging lens (50) onto the cylinder (30). Alternatively, the projection unit (60) and the excitation light unit (40) are arranged along the second direction on the same side of the optical combined imaging lens (50); the second direction, the first direction and the axis of the cylinder are perpendicular to each other.

18. An optical surgical guidance system, characterized in that, Includes the surgical light as described in any one of claims 1-17.

Images