Lighting device

Abstract

The utility model provides a lighting device which comprises a first lighting system, a second lighting system and a third lighting system. The first illumination system can form a first illumination light spot with uniform illumination on the surgical field area, and the first illumination light spot provides high-brightness illumination on the surgical field area; the inner diameter of a second illumination light spot formed by the second illumination system is smaller than the radius of the first illumination light spot, and the outer diameter of the second illumination light spot is larger than the radius of the first illumination light spot, so that the first illumination light spot and the second illumination light spot can be in uniform transition, the second illumination light spot increases the illumination area on an operation field area, a better visual environment is complementarily provided, and the operation efficiency is improved. Eye fatigue of operation personnel can be relieved; the color temperature and / or wavelength of a third illumination light spot formed by the third illumination system is different from the color temperature and / or wavelength of the first illumination light spot and the second illumination light spot, by setting the color temperature and / or wavelength of the third illumination light spot, the visual fatigue of an operator can be relieved, and the system is suitable for various operation environments such as non-external wound operations or cavity type operation lamps.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a lighting device. Background Art

[0002] The surgical shadowless lamp is a medical device used to provide lighting in the operating room. The surgical field is a specific area that needs to be illuminated and focused during surgery. Traditional shadowless lamps are often designed with only a conventional surgical field light spot function, which can only provide a high-brightness light spot in the center of the surgical field, and the color of the high-brightness light spot is single. Staring at a high-brightness light spot with a single color for a long time will cause eye fatigue to the surgeon, reduce the surgeon's attention, and reduce work efficiency. Utility Model Content

[0003] The technical purpose of the utility model is to provide a lighting device, aiming to solve the problem that the traditional shadowless lamp can only provide a single light spot, which causes visual fatigue of the operating personnel.

[0004] In order to solve the above technical problems, the utility model is implemented as follows: a lighting device includes a first lighting system;

[0005] The first illumination system comprises a plurality of optical modules arranged in an equiangular array along a circumference, each of the optical modules comprises two illumination units capable of forming corresponding circular light spots on the surgical field, the plurality of circular light spots at least partially overlap to form a first illumination light spot, the first illumination light spot is circular and the center of the circle overlaps with the center of the surgical field;

[0006] The lighting device further comprises a second lighting system, and / or a third lighting system;

[0007] The second illumination system forms a second illumination spot on a surgical field area at a preset distance from the light emitting surface, the second illumination spot is annular and has the center of the surgical field area as the center of the circle, and the radius of the first illumination spot is larger than the inner diameter of the second illumination spot and smaller than the outer diameter of the second illumination spot;

[0008] The third illumination system forms a third illumination spot on a surgical field area at a preset distance from the light-emitting surface, and the color temperature and / or wavelength of the third illumination spot is different from those of the first illumination spot and the second illumination spot.

[0009] Furthermore, the illumination of the second illumination spot is 0.5% to 1% of the illumination of the first illumination spot.

[0010] Furthermore, the radius of the first illumination spot is 30% to 60% of the outer diameter of the second illumination spot.

[0011] Furthermore, the second lighting system includes at least one first lens module, and the first lens module includes at least two TIR lenses; the first lens module is arranged between two adjacent optical modules.

[0012] Furthermore, the third illumination spot is circular and the center of the circle overlaps with the center of the surgical field area.

[0013] Furthermore, the third lighting system includes at least one second lens module, and the second lens module includes at least one TIR lens; the second lens module is arranged between two adjacent optical modules.

[0014] Further, the third lighting system includes three-primary-color LED lamp beads and a light mixing board for electrically connecting to the PCB board;

[0015] The light mixing plate is in a circular shape and its center overlaps with the center of the equiangular array of the optical module. The three-primary color LED lamp beads are arranged at equal angles on the light mixing plate along the circular trajectory of the light mixing plate. The light mixing plate is arranged on one side of the light emitting surface of the three-primary color LED lamp beads.

[0016] Further, the optical module is a plurality of first optical modules and a plurality of second optical modules, and the plurality of first optical modules and the plurality of second optical modules are arranged in an array with equal angles around the same center of a circle; the first optical module and the second optical module each include two illumination units, and each illumination unit forms a corresponding circular light spot on the surgical field area at a preset distance from the light exit surface, and any of the first optical module and the second optical module form two circular light spots that intersect to form a light spot pattern;

[0017] The light spot patterns formed by the first optical module and the second optical module are different. The light spot patterns are arranged in an equal-angle array on the same circle with the center of the surgical field area as the center to form the first illumination light spot, wherein adjacent light spot patterns at least partially overlap.

[0018] Further, the first optical module includes a first illumination unit and a second illumination unit, and the first illumination unit and the second illumination unit are respectively used to form a first circular light spot and a second circular light spot on the surgical field area;

[0019] The center of each of the first circular light spots overlaps with the center of the surgical field area, and the second circular light spots are arranged in an equal angle array on the same circumference with the center of the surgical field area as the center, and adjacent second circular light spots intersect;

[0020] The sum of the radius of the second circular light spot and the distance between the centers of the first circular light spot and the second circular light spot is greater than the radius of the first circular light spot, and the radius of the second circular light spot is greater than the first circular light spot.

[0021] Further, the second optical module includes a third illumination unit and a fourth illumination unit, and the third illumination unit and the fourth illumination unit are used to form the third circular light spot and the fourth circular light spot on the surgical field area, respectively;

[0022] The center of each of the third circular light spots overlaps with the center of the surgical field area, and the radius of the third circular light spot is greater than the radius of the first circular light spot;

[0023] The fourth circular light spot and the second circular light spot are arranged in an equiangular array with the center of the surgical field area as the center, and adjacent second circular light spots intersect with the fourth circular light spots.

[0024] Compared with the prior art, the lighting device in the utility model has the following beneficial effects:

[0025] The first lighting system can form a first lighting spot with uniform illumination on the surgical field, and the first lighting spot provides high-brightness illumination on the surgical field;

[0026] The inner diameter of the second illumination spot formed by the second illumination system is smaller than the radius of the first illumination spot, and the outer diameter of the second illumination spot is larger than the radius of the first illumination spot, so that the first illumination spot and the second illumination spot can transition evenly. The second illumination spot increases the illumination area on the surgical field. The supplement of the second illumination spot provides a better visual environment and can reduce eye fatigue of surgical personnel.

[0027] The color temperature and / or wavelength of the third illumination spot formed by the third illumination system are different from those of the first illumination spot and the second illumination spot. By setting the color temperature and / or wavelength of the third illumination spot, the visual fatigue of the surgeon can be alleviated. The system is suitable for various surgical environments such as non-invasive surgery or cavity surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the distribution of optical modules of the lighting device in some embodiments of the utility model;

[0029] Figure 2 is a schematic diagram of the distribution of optical modules of lighting devices in other embodiments of the utility model;

[0030] Figure 3 The second illumination spot diagram in the embodiment of the utility model;

[0031] Figure 4This is a graph showing the illumination distribution curve of the second illumination spot in the embodiment of the utility model;

[0032] Figure 5 Schematic diagram of the first illumination spot and the second illumination spot in the embodiment of the utility model;

[0033] Figure 6 Schematic diagram of the illumination of the first illumination spot and the second illumination spot in the embodiment of the utility model;

[0034] Figure 7 It is a schematic diagram of the structure of the first lens module in some embodiments of the utility model;

[0035] Figure 8 It is a schematic diagram of the structure of the third lighting system in some embodiments of the utility model;

[0036] Fig. 9 Schematic diagram of a first circular light spot and a second circular light spot formed when the light emitting surface of the first optical module is at a preset distance D=1000 mm when the light S is irradiated on the surgical field area in some embodiments of the utility model;

[0037] Fig.10 1 is a schematic diagram of a first circular light spot and a second circular light spot formed when the light emitting surface of the first optical module is at a preset distance D=1000 mm in some embodiments of the present invention, and the light S is irradiated on the surgical field area;

[0038] Fig.11 This is a schematic diagram of the distribution of superimposed light spots formed by each first optical module on the surgical field area in the lighting device of some embodiments of the utility model;

[0039] Fig.12 This is a schematic diagram of the distribution of superimposed light spots formed by each second optical module on the surgical field area in the lighting device of some embodiments of the utility model;

[0040] Fig.13 It is a schematic diagram of the distribution of superimposed light spots formed by the lighting device as a whole in the surgical field area in some embodiments of the utility model;

[0041] Fig.14 is a schematic diagram of a third circular light spot and a fourth circular light spot formed by light S irradiating the surgical field area when the light emitting surface of the second optical module is at a preset distance D=1000mm in some embodiments of the present invention;

[0042] Fig.15 It is a schematic diagram of the adjustable radius range of the surgical field light spot in the utility model;

[0043] Fig.16 It is a structural schematic diagram of the first optical module in some embodiments of the utility model.

[0044] In the drawings, each reference numeral indicates: 1, first lighting system; 2, second lighting system; 3, third lighting system; 10, first lighting spot; 20, second lighting spot; 30, third lighting spot;

[0045] 100, first optical module; 100a, first circular light spot; 100b, second circular light spot; 110, first illumination unit; 120, second illumination unit; 200, second optical module; 200a, third circular light spot; 200b, fourth circular light spot; 210, third illumination unit; 220, fourth illumination unit; C, center of surgical field; S, light; 400, first lens module; 410, TIR lens; 510, TIR lens; 610, three-primary-color LED lamp beads; 620, light mixing board. DETAILED DESCRIPTION

[0046] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] Example:

[0050] See also Figures 1 to 15, in this embodiment, a lighting device includes a first lighting system 1;

[0051] The first illumination system 1 includes a plurality of optical modules arranged in an equiangular array along a circle, each optical module includes two illumination units capable of forming corresponding circular light spots on the surgical field area, the plurality of circular light spots at least partially overlap to form a first illumination light spot 10, the first illumination light spot 10 is circular and the center of the circle overlaps with the center C of the surgical field area;

[0052] The lighting device further comprises a second lighting system 2 and / or a third lighting system 3;

[0053] The second illumination system 2 forms a second illumination spot 20 on the surgical field area at a preset distance from the light emitting surface. The second illumination spot 20 is annular and takes the center C of the surgical field area as the center. The radius of the first illumination spot 10 is larger than the inner diameter of the second illumination spot 20 and smaller than the outer diameter of the second illumination spot 20.

[0054] The third illumination system 3 forms a third illumination spot 30 on the surgical field area at a preset distance from the light emitting surface. The color temperature and / or wavelength of the third illumination spot 30 are different from those of the first illumination spot 10 and the second illumination spot 20 .

[0055] In this embodiment, the first illumination system 1 can form a first illumination spot 10 with uniform illumination on the surgical field area, and the first illumination spot 10 provides high-brightness illumination on the surgical field area.

[0056] like Figure 5 As shown, the inner diameter of the second illumination spot 20 formed by the second illumination system 2 is smaller than the radius of the first illumination spot 10, and the outer diameter of the second illumination spot 20 is larger than the radius of the first illumination spot 10, so that the first illumination spot 10 and the second illumination spot 20 can transition evenly, and the second illumination spot 20 increases the illumination area on the surgical field. The supplement of the second illumination spot 20 provides a better visual environment and can reduce eye fatigue of surgical personnel.

[0057] The color temperature and / or wavelength of the third illumination spot 30 formed by the third illumination system 3 are different from those of the first illumination spot 10 and the second illumination spot 20. By setting the color temperature and / or wavelength of the third illumination spot 30, the visual fatigue of the surgeon can be alleviated, and the device is suitable for non-external incision surgery or various surgical environments such as cavity surgical lamps.

[0058] It should be known that the lighting device is provided with at least a first lighting system 1, and the lighting device may be provided with the first lighting system 1 and the second lighting system 2 at the same time, or the first lighting system 1 and the third lighting system 3 at the same time, or the first lighting system 1, the second lighting system 2 and the third lighting system 3 at the same time.

[0059] The second lighting system 2 and the third lighting system 3 are both auxiliary systems of the first lighting system 1, and the second lighting system 2 and the third lighting system 3 are selectively used by the surgical staff. When in use, the first lighting system 1, the second lighting system 2 or the third lighting system 3 of the lighting device can be turned on separately, or the first lighting system 1 and the second lighting system 2 can be turned on at the same time, or the first lighting system 1 and the third lighting system 3 can be turned on at the same time, or the first lighting system 1, the second lighting system 2 and the third lighting system 3 can all be turned on at the same time.

[0060] Specifically, Fig.16 As shown, the illumination unit includes an LED light source and a lens, the optical module includes two lenses formed in one piece and LED light sources correspondingly arranged in the two lenses, and the LED light source is connected to the PCB board of the lighting device. The LED light source can be a white light emitting diode.

[0061] The light source provided by the third lighting system 3 can be a light source of any color except non-white light-emitting diodes. For example, the third lighting system 3 can select a light source that forms a green third lighting spot 30 in the surgical field area, which can be better suitable for intracavitary surgery and provide environmental and atmosphere lighting functions.

[0062] The color temperature of the third illumination spot 30 may also be different from that of the first illumination spot 10. Usually, the color temperature of the first illumination spot 10 for highlight illumination in the surgical field is between 5000K and 6000K to provide clear and bright light S. The color temperature of the third illumination spot 30 is different from that of the first illumination spot 10. For example, the color temperature of the third illumination spot 30 is between 4000K and 5000K. The light spot within this color temperature range will not be dazzling and can provide sufficient brightness and clarity.

[0063] The integrated optical module pre-sets the relative position and assembly deflection angle between the optical axes of the two illumination units, allowing the optical module to be integrated and welded to the same PCB board, avoiding the need to design illumination and assembly deflection angles for multiple illumination units one by one, greatly simplifying the production process and saving production costs.

[0064] Furthermore, the illumination of the second illumination spot 20 is 0.5% to 1% of the illumination of the first illumination spot 10 .

[0065] The first illumination light spot 10 forms a main light spot on the surgical field area, which is used to provide main surgical field area illumination. The illumination of the first illumination light spot 10 is between 40,000 lux and 160,000 lux. The second illumination system 2 forms a second illumination light spot 20 on the surgical field area. The second illumination light spot 20 is a non-compliant surgical field light spot in the shape of a ring, such as Figure 3 and 4 As shown, Figure 3 is the second illumination spot diagram, Figure 4 2 is a graph showing the illumination distribution curve of the second illumination spot. It can be seen that the maximum illumination of the second illumination spot 20 is between 1500 lux and 1700 lux.

[0066] The illumination target of the second illumination system 2 is also the center of the surgical field. The inner diameter of the second illumination spot 20 obtained by the second illumination system 2 is slightly smaller than the diameter of the first illumination spot 10 generated by the first illumination system 1, thereby achieving a smooth connection between the light spots of the two systems.

[0067] Furthermore, the radius of the first illumination spot 10 is 30% to 60% of the outer diameter of the second illumination spot 20 .

[0068] Specifically, Figure 5 As shown, in some embodiments, the radius of the first illumination spot 10 is about 300 mm, and the outer diameter of the second illumination spot 20 is about 800 mm. The first illumination spot 10 and the second illumination spot 20 are evenly transitioned, and have a good illumination effect.

[0069] Furthermore, the second illumination system 2 includes at least one first lens module 400 , and the first lens module 400 includes at least two TIR lenses 410 ; the first lens module 400 is disposed between two adjacent optical modules.

[0070] Preferably, if Figure 1 As shown, in the same first lens modules 400, each TIR lens 410 is distributed radially along the circumference of the equiangular array of each optical module, or each TIR lens 410 is distributed along the radial tangent of the circumference of the equiangular array of each optical module.

[0071] Specifically, the TIR lens 410 is a scale-type TIR lens, and two TIR lenses 410 are integrally formed and integrated on the same PCB board to form a first lens module 400 .

[0072] It is understandable that the TIR lens 410 can achieve a hollow spot effect and obtain a ring-shaped second circular spot 100b. The utility model does not limit the number of TIR lenses 410 in the same first lens module 400. In practical applications, a suitable number of TIR lenses 410 can be selected according to the size of the second illumination spot 20 to be formed to achieve the desired hollow spot effect.

[0073] Furthermore, if Figure 1 and 7 As shown, the third lighting system 3 includes at least one second lens module, and the second lens module includes at least one TIR lens 510; the second lens module is arranged between two adjacent optical modules.

[0074] The second lens module is integrated by the TIR lens 510 , has low production and assembly costs, and can provide a third illumination spot 30 on the surgical field area that is different from the first illumination spot 10 generated by the first illumination system 1 .

[0075] In some embodiments, the third lighting system 3 includes at least one second lens module, the TIR lens 510 in the second lens module is also a scale-type TIR lens, and two TIR lenses 510 are integrally formed and integrated on the same PCB board to form a second lens module.

[0076] The TIR lens 510 in the third lighting system 3 also includes a non-white LED light source, preferably a green LED, which is easy to apply to the intracavitary surgical environment. The LED light source in the TIR lens can be a single LED light source or a combination of multiple different LED light sources. Multiple different LED light sources are mixed in the surgical field area to form a light spot of a specific color. By adjusting the light intensity of different LED light sources, third lighting spots 30 of different colors can be obtained.

[0077] It should be noted that the present invention does not limit the number of TIR lenses 510 in the second lens module, and different second lens modules can use different LED light source combinations or the same LED light source.

[0078] Furthermore, if Figure 2 and 8 As shown, the third lighting system 3 includes a three-primary color LED lamp bead 610 and a light mixing board 620 for electrically connecting to a PCB board;

[0079] The light mixing plate 620 is in a circular shape and its center overlaps with the center of the equiangular array of the optical module. The three-primary color LED lamp beads 610 are arranged at equal angles on the light mixing plate 620 along the circular trajectory of the light mixing plate 620. The light mixing plate 620 is arranged on the light emitting surface side of the three-primary color LED lamp beads 610.

[0080] Three-primary color LEDs usually refer to LEDs with three colors: red (R), green (G), and blue (B), also known as RGB LEDs. The three-primary color LED 610 has light-emitting elements of three basic colors, and can produce a variety of different colors of light by mixing these colors to different degrees.

[0081] In other embodiments, the three-primary-color LED lamp beads 610 are mounted on the PCB board in a circular trajectory array. After being mixed by the light mixing board 620, the three-primary-color LED lamp beads 610 in the circular trajectory array can present a uniform lighting effect. By adjusting the energy proportion of the three light-emitting elements of red (R), green (G), and blue (B), a variety of color conversions can be achieved, and the wavelength of the third illumination spot 30 on the surgical field area can be changed.

[0082] Such a design can provide the operator with environmental or separate lighting during intracavitary surgery and provide lighting functions for non-surgical operations. The operator can select the desired color of the third lighting spot 30, and it can also present a uniform and soft lighting effect, which can reduce the operator's visual fatigue.

[0083] Furthermore, if Figure 1 As shown, the optical module is a plurality of first optical modules 100 and a plurality of second optical modules 200, and the plurality of first optical modules 100 and the plurality of second optical modules 200 are arrayed at equal angles around the same center of a circle; the first optical module 100 and the second optical module 200 each include two illumination units, and each illumination unit forms a corresponding circular light spot on a surgical field area at a preset distance from a light-emitting surface, and any first optical module 100 and the second optical module 200 form two circular light spots that intersect to form a light spot pattern;

[0084] The light spot patterns formed by the first optical module 100 and the second optical module 200 are different. The light spot patterns are arranged in an equal angle array on the same circle with the center C of the surgical field area as the center to form a first illumination light spot 10, wherein adjacent light spot patterns at least partially overlap.

[0085] As an example, the lighting device has six first optical modules 100 and six second optical modules 200 in an array at 30° intervals around the same center of a circle. Preferably, the number of the first optical modules 100 and the second optical modules 200 is 2N, where N is a natural number and is greater than or equal to 3. There is no limit to the number of the first optical modules 100 and the second optical modules 200. As the number of the first optical modules 100 and the second optical modules 200 increases, the number of circular light spots superimposed on the surgical field increases, the angle of the adjacent light spot pattern interval array is smaller, and the lighting effect of the formed first illumination light spot 10 is more uniform.

[0086] Furthermore, the first optical module 100 includes a first illumination unit 110 and a second illumination unit 120, and the first illumination unit 110 and the second illumination unit 120 are respectively used to form a first circular light spot 100a and a second circular light spot 100b on the surgical field area.

[0087] The center of each first circular light spot 100a overlaps with the center C of the surgical field area. The second circular light spots 100b are arranged in an equiangular array on the same circle with the center C of the surgical field area as the center. Adjacent second circular light spots 100b intersect.

[0088] The sum of the radius of the second circular light spot 100b and the distance between the centers of the first circular light spot 100a and the second circular light spot 100b is greater than the radius of the first circular light spot 100a, and the radius of the second circular light spot 100b is greater than the first circular light spot 100a.

[0089] Specifically, Fig. 9 and 10 As shown, in some embodiments, the preset distance D between the light emitting surfaces of the first light unit 110 and the second light unit 120 and the surgical field area is 1000 mm, the light emitting surfaces of the first light unit 110 and the second light unit 120 are on the same plane, and the center line distance between the light emitting surfaces of the first light unit 110 and the second light unit 120 is d.

[0090] The distance between the centers of the first circular light spot 100a and the second circular light spot 100b is d. The radius of the first circular light spot 100a is R1, and the radius of the second circular light spot 100b is R2.

[0091] like Fig.11 As shown, the center of the first circular light spot 100a overlaps with the center CC of the surgical field area, forming a superimposed light spot with a diameter of D1, where D1 = 2R1. The overlap of the first circular light spot 100a ensures the stability of the illumination of the center CC of the surgical field area.

[0092] The second circular light spot 100 b forms a superimposed light spot with a diameter of D2 in an equal-angle array on the same circumference with the surgical field area center CC as the center, where D2=2(d+R2).

[0093] In some embodiments, the radius of the second circular light spot 100b is greater than the radius of the first circular light spot 100a, the radius R1 of the first circular light spot 100a is 120-160 mm, and the radius R2 of the second circular light spot 100b is 180-220 mm.

[0094] The sum of the radius R2 of the second circular light spot 100b and the distance d between the centers of the first circular light spot 100a and the second circular light spot 100b is d+R2. Since d+R2>R1, D1=2R1, D2=2(d+R2), the diameter D2 of the superimposed light spot formed by the superposition of the second circular light spot 100b is greater than the diameter D1 of the superimposed light spot formed by the superposition of the first circular light spot 100a.

[0095] The two superimposed light spots formed in this way have different diameter ranges. The radii of the first circular light spot 100a and the second circular light spot 100b can be adjusted within the range to change the sizes of the superimposed light spot with a diameter of D1 and the superimposed light spot with a diameter of D2. Different lighting effects can be obtained by changing the sizes of the two superimposed light spots within a certain range. The superimposed light spot with a diameter of D2 also partially overlaps with the superimposed light spot with a diameter of D1 to form a uniform transition, so that the overall lighting effect of the surgical field area is more uniform.

[0096] It should be noted that the present invention has no limitation on the radius R1 of the first circular light spot 100a and the radius of the second circular light spot 100b. Those skilled in the art can define the sizes of the first circular light spot 100a and the second circular light spot 100b according to specific surgical occasions.

[0097] Furthermore, if Figure 1 and 14 As shown, the second optical module 200 includes a third illumination unit 210 and a fourth illumination unit 220, and the third illumination unit 210 and the fourth illumination unit 220 are respectively used to form a third circular light spot 200a and a fourth circular light spot 200b on the surgical field area.

[0098] The center of each third circular light spot 200a overlaps with the center C of the surgical field area, and the radius of the third circular light spot 200a is greater than the radius of the first circular light spot 100a. The fourth circular light spot 200b and the second circular light spot 100b are arranged at equal angles with the center C of the surgical field area as the center, and the adjacent second circular light spots 100b and fourth circular light spots 200b intersect.

[0099] Specifically, Fig.12 As shown, the radius of the third circular light spot 200a is R3, and the center of each third circular light spot 200a overlaps with the center C of the surgical field area, forming a superimposed light spot with a diameter of D3, where D3=2R3.

[0100] The radius of the fourth circular light spot 200b is R4, and each of the fourth circular light spots 200b and the second circular light spot 100b forms an overlapping light spot with a diameter of D2 in an equal angle array with the center C of the surgical field area as the center, and D2=2(d+R4). The circular light spots arranged in this way are reasonably distributed, effectively improving the uniformity and comprehensiveness of the illumination of the surgical field area, ensuring that the surgical staff can clearly observe and operate in the surgical field area, and providing a more accurate lighting effect.

[0101] In some embodiments, the radius R3 of the third circular light spot 200a is 180-220 mm, and the radius R4 of the fourth circular light spot 200b is 180-220 mm. It should be noted that in other embodiments, the radii of the second circular light spot 100b and the fourth circular light spot 200b may be the same or different, and the sizes of the second circular light spots 100b and the fourth circular light spots 200b may be changed by adjustment to achieve various lighting effects.

[0102] Further, the radii of the first circular light spot 100a, the second circular light spot 100b, the third circular light spot 200a and the fourth circular light spot 200b can all be adjusted;

[0103] and / or, the illumination of the first circular light spot 100a, the second circular light spot 100b, the third circular light spot 200a and the fourth circular light spot 200b can be adjusted;

[0104] And / or, the switching actions of the first illumination unit 110, the second illumination unit 120, the third illumination unit 210 and the fourth illumination unit 220 can be controlled individually.

[0105] like Fig.13 As shown, in some embodiments, each first circular light spot 100a forms a superimposed light spot with a diameter of D1, each second circular light spot 100b and each fourth circular light spot 200b together form a superimposed light spot with a diameter of D2, and each third circular light spot 200a forms a superimposed light spot with a diameter of D3. By adjusting the radius of the first circular light spot 100a, the second circular light spot 100b, the third circular light spot 200a and the fourth circular light spot 200b, the diameters D1, D2 and D3 of each superimposed light spot can be changed.

[0106] like Fig.15 As shown, the minimum radius Rmin=D1 / 2, the maximum radius Rmax=D2 / 2 of the first illumination spot 10, the diameters D1 and D2 of the superimposed light spots can be changed to change the minimum radius and the maximum radius of the first illumination spot 10, and the size of the first illumination spot 10 can be changed. The diameter D3 of the superimposed light spot can be changed to change the transition effect of the first illumination spot 10, and the ratio of the three superimposed light spots with diameters of D1, D2 and D3 can be adjusted to form various types of first illumination spots 10, thereby providing illumination in various surgical scenarios.

[0107] It can be understood that the radius and / or illumination of the first circular light spot 100a, the second circular light spot 100b, the third circular light spot 200a and the fourth circular light spot 200b can be adjusted individually, the switching action of each illumination unit can be adjusted individually, and the first illumination unit 110, the second illumination unit 120, the third illumination unit 210 and the fourth illumination unit 220 can also be adjusted individually.

[0108] Preferably, the lighting device can preset multiple lighting modes. In the same lighting device, the radii of all first lighting units 110 are adjusted at the same time, the radii of all second lighting units 120 are adjusted at the same time, the radii of all third lighting units 210 are adjusted at the same time, and the radii of all fourth lighting units 220 are adjusted at the same time, and each lighting unit is adjusted proportionally.

[0109] Optionally, the radius change rate of each circular light spot is 10% to 40%. Within this change range, the diameters of superimposed light spots of different sizes can change in a uniform gradient, and the change rates of the first circular light spot 100a, the second circular light spot 100b, the third circular light spot 200a, and the fourth circular light spot 200b can be different or the same.

[0110] In addition, the inner diameter of the second illumination spot 20 provided by the second illumination system 2 is smaller than the minimum radius Rmin of the first illumination spot 10 , the outer diameter of the second illumination spot 20 is larger than the maximum radius Rmax of the first illumination spot 10 , and the second illumination spot 20 .

[0111] like Figure 6 As shown in the figure, it is a graph of the illumination distribution curve of the first illumination spot 10 and the second illumination spot 20. Figure 6 In the figure, the x-axis is the distance from any point on the first illumination light spot 10 to the center C of the surgical field area, x=0 represents that the distance from the first illumination light spot 10 to the center C of the surgical field area is 0, and the center of the first illumination light spot 10 is located at x=0; the y-axis is the percentage of the illumination of any point on the surgical field area to the maximum illumination of the first illumination light spot 10, the curve f1 is the illumination distribution curve of the first illumination light spot 10, and the curve f2 is the illumination distribution curve of the second illumination light spot 20;

[0112] (0, 1.0) on the curve f1 indicates that the illumination percentage of the first illumination spot 10 at the center C of the surgical field is 100%. In the curve f1, when x=(-300, 0], the y value continues to increase, and the slope of the curve f is positive. When x=[0, 300), the y value continues to decrease, and the slope of the curve f is negative. The illumination of the first illumination spot 10 gradually decreases as it moves away from the center C of the surgical field in the radial direction, forming a first illumination spot 10 with the highest illumination at the center C of the surgical field, and gradually decreasing illumination as it spreads outward from the center C of the surgical field, providing a small area of ​​bright illumination in the surgical field.

[0113] The maximum y value of the curve f2 is 0.1, which means that the percentage of the illumination of the second illumination spot 20 on the surgical field area to the maximum illumination of the first illumination spot 10 is 10%. The second illumination spot 20 and the first illumination spot 10 partially overlap, so that the edge of the first illumination spot 10 transitions to the second illumination spot 20 more smoothly, thereby expanding the illumination range of the first illumination spot 10. The second illumination spot 20 has a lower illumination and can provide the surgical field area with a larger spot and lower illumination ambient lighting, thereby effectively alleviating the visual fatigue of surgical personnel.

[0114] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lighting device, characterized in that: including a first lighting system; The first illumination system comprises a plurality of optical modules arranged in an equiangular array along a circumference, each of the optical modules comprises two illumination units capable of forming corresponding circular light spots on the surgical field, the plurality of circular light spots at least partially overlap to form a first illumination light spot, the first illumination light spot is circular and the center of the circle overlaps with the center of the surgical field; The lighting device further comprises a second lighting system, and / or a third lighting system; The second illumination system forms a second illumination spot on a surgical field area at a preset distance from the light emitting surface, the second illumination spot is annular and has the center of the surgical field area as the center of the circle, and the radius of the first illumination spot is larger than the inner diameter of the second illumination spot and smaller than the outer diameter of the second illumination spot; The third illumination system forms a third illumination spot on a surgical field area at a preset distance from the light-emitting surface, and the color temperature and / or wavelength of the third illumination spot is different from those of the first illumination spot and the second illumination spot.

2. The lighting device according to claim 1, characterized in that: The illumination of the second illumination spot is 0.5% to 1% of the illumination of the first illumination spot.

3. The lighting device according to claim 1, characterized in that: The radius of the first illumination spot is 30% to 60% of the outer diameter of the second illumination spot.

4. The lighting device according to claim 1, characterized in that: The second lighting system includes at least one first lens module, and the first lens module includes at least two TIR lenses; the first lens module is arranged between two adjacent optical modules.

5. The lighting device according to claim 1, characterized in that: The third illumination spot is circular, and the center of the circle overlaps with the center of the surgical field area.

6. The lighting device according to claim 5, characterized in that: The third lighting system includes at least one second lens module, and the second lens module includes at least one TIR lens; the second lens module is arranged between two adjacent optical modules.

7. The lighting device according to claim 5, characterized in that: The third lighting system includes three-primary-color LED lamp beads and a light mixing board for electrically connecting to the PCB board; The light mixing plate is in a circular shape and its center overlaps with the center of the equiangular array of the optical module. The three-primary color LED lamp beads are arranged at equal angles on the light mixing plate along the circular trajectory of the light mixing plate. The light mixing plate is arranged on one side of the light emitting surface of the three-primary color LED lamp beads.

8. The lighting device according to any one of claims 1 to 7, characterized in that: The optical module comprises a plurality of first optical modules and a plurality of second optical modules, and the plurality of first optical modules and the plurality of second optical modules are arranged in an equiangularly spaced array around the same center of a circle; the first optical module and the second optical module each comprise two illumination units, and each illumination unit forms a corresponding circular light spot on the surgical field area at a preset distance from the light exiting surface, and any two circular light spots formed by the first optical module and the second optical module intersect to form a light spot pattern; The light spot patterns formed by the first optical module and the second optical module are different. The light spot patterns are arranged in an equal-angle array on the same circle with the center of the surgical field area as the center to form the first illumination light spot, wherein adjacent light spot patterns at least partially overlap.

9. The lighting device according to claim 8, characterized in that: The first optical module comprises a first illumination unit and a second illumination unit, wherein the first illumination unit and the second illumination unit are respectively used to form a first circular light spot and a second circular light spot on the surgical field area; The center of each of the first circular light spots overlaps with the center of the surgical field area, and the second circular light spots are arranged in an equal angle array on the same circumference with the center of the surgical field area as the center, and adjacent second circular light spots intersect; The sum of the radius of the second circular light spot and the distance between the centers of the first circular light spot and the second circular light spot is greater than the radius of the first circular light spot, and the radius of the second circular light spot is greater than the first circular light spot.

10. The lighting device according to claim 9, characterized in that: The second optical module comprises a third illumination unit and a fourth illumination unit, and the third illumination unit and the fourth illumination unit are used to form a third circular light spot and a fourth circular light spot on the surgical field area respectively; The center of each of the third circular light spots overlaps with the center of the surgical field area, and the radius of the third circular light spot is greater than the radius of the first circular light spot; The fourth circular light spot and the second circular light spot are arranged in an equiangular array with the center of the surgical field area as the center, and adjacent second circular light spots intersect with the fourth circular light spots.

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