Lighting device

Abstract

The utility model provides a lighting device which comprises a plurality of optical modules, each optical module comprises two lighting units, each lighting unit forms a corresponding circular light spot on an operation field area with a preset distance from a light emitting surface, and the two circular light spots formed by any optical module intersect to form a light spot pattern; the optical modules comprise 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 arrayed around the same circle center at equal angle intervals; light spot patterns formed by the first optical module and the second optical module are different, the light spot patterns form surgical field light spots on the same circumference with the surgical field area center as the circle center in an equal-angle array mode, and the adjacent light spot patterns are at least partially overlapped. According to the utility model, through the array arrangement of a plurality of two-in-one integrated optical modules, diversified combination of a plurality of light spots is realized, the sizes of the light spots in the surgical field can be finely adjusted, and the illumination requirements of diversified surgical field areas are met.

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] 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 can only provide conventional superimposed light spots to the surgical field. Several light spots are superimposed and unevenly distributed, resulting in limited types and single sizes of superimposed light spots, which are difficult to meet diverse lighting needs. Utility Model Content

[0003] The technical purpose of the present utility model is to provide a lighting device, aiming to solve at least one problem mentioned in the background technology.

[0004] In order to solve the above technical problems, the utility model is implemented as follows: an illumination device includes a plurality of optical modules, each of the optical modules includes two illumination units, each of the illumination units forms a corresponding circular light spot on a surgical field area at a preset distance from a light emitting surface, and the two circular light spots formed by any one of the optical modules intersect to form a light spot pattern;

[0005] The optical module comprises a plurality of first optical modules and a plurality of second optical modules, wherein the plurality of first optical modules and the plurality of second optical modules are arrayed at equal angles around the same center of a circle, and the light spot patterns are arrayed at equal angles on the same circumference with the center of the surgical field area as the center of the circle to form surgical field light spots, wherein adjacent light spot patterns at least partially overlap.

[0006] Furthermore, the two illumination units in each of the optical modules are integrally formed and have parallel optical axes, and the distance between the centers of the two circular light spots formed by each of the optical modules on the surgical field is equal.

[0007] 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;

[0008] In the lighting device, the center of each first circular light spot overlaps with the center of the surgical field area, and each second circular light spot is arranged at equal angles on the same circle with the center of the surgical field area as the center, and adjacent second circular light spots intersect.

[0009] Further, 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.

[0010] Furthermore, a first light-transmitting plate is arranged on the first illumination unit and / or the second illumination unit, the surface of the first light-transmitting plate has uniform protrusions, and the first light-transmitting plate is used to adjust the radius of the light spot so that the radius of the second circular light spot is larger than the first circular light spot.

[0011] Furthermore, the second optical module includes a third illumination unit, which is used to form a third circular light spot on the surgical field area, the center of the third circular light spot overlaps with the center of the surgical field area, and the radius of the third circular light spot is different from the radius of the first circular light spot.

[0012] Further, the radius of the third circular light spot is greater than the radius of the first circular light spot.

[0013] Furthermore, the third illumination unit is provided with a second light-transmitting plate, the surface of the second light-transmitting plate has uniform protrusions, and the second light-transmitting plate is used to adjust the radius of the light spot so that the radius of the third circular light spot is larger than that of the first circular light spot.

[0014] Furthermore, the second optical module also includes a fourth illumination unit, which is used to form a fourth circular light spot on the surgical field area. 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 and fourth circular light spots intersect.

[0015] Furthermore, the distance between the centers of the two circular light spots formed by each of the optical modules on the surgical field area is equal, and the radius of the second circular light spot is the same as that of the fourth circular light spot.

[0016] The radius of each circular light spot can be adjusted;

[0017] And / or, the illumination of each circular light spot can be adjusted;

[0018] And / or, the switching action of each lighting unit can be controlled individually.

[0019] Compared with the prior art, the lighting device in the utility model has the following beneficial effects: the first optical module and the second optical module integrate two illumination units, forming two overlapping circular light spots in the surgical field area, and forming a light spot pattern with a uniform transition between the two circular light spots. Through the intersection of the two circular light spots to different degrees, the light spot patterns formed by the first optical module and the second optical module are different, and different types of surgical field light spots can be obtained through the array of the above light spot patterns.

[0020] The spot patterns are arranged in equal angles, and adjacent spot patterns overlap at least partially, so that the spot patterns are superimposed, and the circular spots within the surgical field spot have a uniform transition, so that the illumination of the surgical field spot and the circular spots inside are evenly distributed.

[0021] By adjusting the switching action of each illumination unit in the first optical module and / or the second optical module, and adjusting the illumination and size of the circular light spot generated by each illumination unit in the first optical module and / or the second optical module, the size and illumination of the surgical field light spot can be changed, the surgical field light spot can be adjusted, and the diverse lighting requirements of the surgical field area can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the distribution of optical modules of the lighting device in the first embodiment of the utility model;

[0023] Figure 2 is a schematic diagram of the distribution of optical modules of the lighting device in the second embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of forming a first circular light spot and a second circular light spot when the light emitting surface of the first optical module is at a preset distance D=1000mm in some embodiments of the utility model, and the light S is irradiated on the surgical field area;

[0025] Figure 4 It is a schematic diagram of forming a third circular light spot and a fourth circular light spot when the light emitting surface of the second optical module is at a preset distance D=1000mm in some embodiments of the utility model, and the light S is irradiated on the surgical field area;

[0026] Figure 5 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;

[0027] Figure 6 2 is a schematic structural diagram of two viewing angles of the first optical module in the first embodiment of the utility model;

[0028] Figure 7 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;

[0029] Figure 8 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;

[0030] Fig. 9 2 is a schematic structural diagram of two viewing angles of the second optical module in the first embodiment of the utility model;

[0031] Fig.10 It is a schematic diagram of the third circular light spot and the fourth circular light spot formed by the 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 the first embodiment of the utility model;

[0032] Fig.11 This is a perspective structural diagram of the second optical module in the second embodiment of the utility model;

[0033] Fig.12 It is a schematic diagram of the adjustable radius range of the surgical field light spot in the utility model;

[0034] Fig.13 It is a schematic diagram of the illumination distribution of the surgical field light spot.

[0035] In the accompanying drawings, each reference numeral represents: 10, lighting device; 100, first optical module; 100a, first circular light spot; 100b, second circular light spot; 110, first illumination unit; 120, second illumination unit; 121, first light-transmitting plate; 200, second optical module; 200a, third circular light spot; 200b, fourth circular light spot; 210, third illumination unit; 211, second light-transmitting plate; 220, fourth illumination unit; 221, third light-transmitting plate; C, center of surgical field area; S, light. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] See also Figures 1 to 13 In this embodiment, an illumination device 10 includes a plurality of optical modules, each of which includes two illumination units, each of which forms a corresponding circular light spot on a surgical field area at a preset distance from a light-emitting surface, and two circular light spots formed by any optical module intersect to form a light spot pattern;

[0040] The optical module comprises a plurality of first optical modules 100 and a plurality of second optical modules 200, wherein the plurality of first optical modules 100 and the plurality of second optical modules 200 are arranged in an equiangular array around the same center of a circle, and the light spot patterns formed by the first optical module 100 and the second optical module 200 are different, and the light spot patterns are arranged in an equiangular array on the same circumference with the center C of the surgical field area as the center of the circle to form surgical field light spots, wherein adjacent light spot patterns at least partially overlap.

[0041] In this embodiment, the first optical module 100 and the second optical module 200 integrate two illumination units, forming two overlapping circular light spots in the surgical field area, and forming a light spot pattern with a uniform transition between the two circular light spots. Through the different degrees of intersection of the two circular light spots, the light spot patterns formed by the first optical module 100 and the second optical module 200 are different, and different types of surgical field light spots can be obtained through the array of the above light spot patterns.

[0042] The spot patterns are arranged in equal angles, and adjacent spot patterns overlap at least partially, so that the spot patterns are superimposed, and the circular spots within the surgical field spot have a uniform transition, so that the illumination of the surgical field spot and the circular spots inside are evenly distributed.

[0043] By adjusting the switching action of each illumination unit in the first optical module 100 and / or the second optical module 200, and adjusting the illumination and size of the circular light spot generated by each illumination unit in the first optical module 100 and / or the second optical module 200, the size and illumination of the surgical field light spot can be changed, thereby achieving the adjustment of the surgical field light spot.

[0044] It can be understood that there can be multiple optical modules, not limited to the first optical module 100 and the second optical module 200, as long as the multiple optical modules are arranged in an equiangular array around the same center of a circle, the spot patterns formed by each optical module are arranged in an equiangular array on the same circumference of the center C of the surgical field area, and adjacent spot patterns at least partially overlap.

[0045] like Figure 1 and 2 As shown, in some embodiments, an illumination device 10 has six first optical modules 100 and six second optical modules 200 in an array at 30° intervals around the same center. The utility model does not limit the number of the first optical modules 100 and the second optical modules 200, and those skilled in the art can select a suitable number according to the requirements of the actual application scenario. Preferably, the number of the first optical modules 100 and the second optical modules 200 is 2N, N is a natural number, and N≥3.

[0046] 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 illumination effect of the surgical field light spot formed is more uniform. Furthermore, the two illumination units in each optical module are integrally formed and the optical axes are parallel, and the distance between the centers of the two circular light spots formed by each optical module on the surgical field is equal.

[0047] Specifically, Figure 3 As shown, the illumination unit includes an LED light source and a lens, the optical module includes two integrally formed lenses 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 10.

[0048] 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 the optical axes and assembly deflection angles of multiple illumination units one by one, greatly simplifying the production process and saving production costs.

[0049] The distance between the two illumination units is fixed. After the preset distance between the light emitting surfaces of the two illumination units and the surgical field area is determined, the position of the center of the circular light spot on the surgical field area can be determined according to the predetermined surgical field light spot effect requirements. Furthermore, the assembly deflection angle of the illumination unit can be determined based on the distance from the center of the circular light spot to the center of the light emitting surface of the corresponding illumination unit and the preset distance between the light emitting surface of the illumination unit and the surgical field area.

[0050] As an example, Figure 3 As shown, in some embodiments, the distance between the centers of the light-emitting surfaces of the two illumination units of the optical module is d. When the preset distance between the light-emitting surfaces of the two illumination units and the surgical field area is D=1000mm, two circular light spots with a center distance d are formed on the surgical field area, and the center of one of the circular light spots overlaps with the center of the surgical field. The assembly deflection angle of the illumination unit can be determined according to the distance from the center of the circular light spot to the center of the light-emitting surface of the corresponding illumination unit and the preset distance D.

[0051] Furthermore, if Figure 1 and 2 As shown, 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;

[0052] In the lighting device 10, the center of each first circular light spot 100a overlaps with the center C of the surgical field area, and each second circular light spot 100b is arranged at equal angles on the same circle with the center C of the surgical field area as the center, and adjacent second circular light spots 100b intersect.

[0053] like Figure 4 As shown, in the first embodiment, the preset distance D between the light emitting surfaces of the first illumination unit 110 and the second illumination unit 120 and the surgical field area is 1000 mm, the light emitting surfaces of the first illumination unit 110 and the second illumination unit 120 are on the same plane, the center connecting line distance of the light emitting surfaces of the first illumination unit 110 and the second illumination unit 120 is d, and 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.

[0054] like Figure 5 As shown, the center of the first circular light spot 100a overlaps with the center C of the surgical field area, forming a superimposed light spot with a diameter of D1, where D1 = 2R1. The first circular light spot 100a overlaps to ensure the stability of the illumination of the center C of the surgical field area.

[0055] The second circular light spot 100 b forms a superimposed light spot with a diameter of D2 in an equiangular array on the same circumference with the center C of the surgical field area as the center, where D2=2(d+R2).

[0056] In the first embodiment, 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 120~160mm, and the radius R2 of the second circular light spot 100b is 180~220mm. The radii of the first circular light spot 100a and the second circular light spot 100b can be adjusted within a range to change the size of the superimposed light spot with a diameter of D1 and the superimposed light spot with a diameter of D2, so that the size of the surgical field spot changes.

[0057] It should be noted that there is no limitation on the radius R1 of the first circular light spot 100a and the radius R2 of the second circular light spot 100b, and 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.

[0058] Further, the sum of the radius of the second circular spot 100b and the distance between the centers of the first circular spot 100a and the second circular spot 100b is greater than the radius of the first circular spot 100a, and the radius of the second circular spot 100b is greater than the first circular spot 100a.

[0059] In the first embodiment, 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.

[0060] The two superimposed light spots formed in this way have different diameter ranges. 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 diameter D2 also partially overlaps with the superimposed light spot with diameter D1 to form a uniform transition, making the overall lighting effect of the surgical field more uniform.

[0061] Furthermore, if Figure 6 As shown, a first light-transmitting plate 121 is provided on the first light-illuminating unit 110 and / or the second light-illuminating unit 120, and the surface of the first light-transmitting plate 121 has uniform protrusions. The first light-transmitting plate 121 is used to adjust the radius of the light spot so that the radius of the second circular light spot 100b is larger than the first circular light spot 100a.

[0062] The surface protrusion structure of the first light-transmitting plate 121 can achieve diffusion of the light S, thereby adjusting the size of the light spot. In the first embodiment, the first light-illuminating unit 110 is a lens with a light surface, and the first light-transmitting plate 121 is disposed on the second light-illuminating unit 120. The surface of the first light-transmitting plate 121 has uniform scaly protrusions, thereby making the radius of the second circular light spot 100b larger than the first circular light spot 100a. In other embodiments, the protrusions on the surface of the first light-transmitting plate 121 can also be beads or other shapes.

[0063] It should be known that the first light-transmitting plate 121 can achieve diffusion, focusing or forming a light spot of a specific shape of the light S according to different surface protrusion structures. In other embodiments, only one of the first illumination unit 110 and the second illumination unit 120 may be provided with the first light-transmitting plate 121, such as the first illumination unit 110 is provided with the first light-transmitting plate 121 for focusing the light S and reducing the light spot, or, such as the second illumination unit 120 is provided with the first light-transmitting plate 121 for diffusing the light S, so that the radius of the second circular light spot 100b is greater than that of the first circular light spot 100a.

[0064] The first illumination unit 110 and the second illumination unit 120 may also both be provided with a first light-transmitting plate 121, such as the first light spot unit and the second illumination unit 120 are both provided with a first light-transmitting plate 121 for diffusing the light S, but the first light-transmitting plates 121 with different degrees of diffusion of the light S are respectively selected for the first illumination unit 110 and the second illumination unit 120, so that the light S of the first illumination unit 110 is diffused less than the light S of the second illumination unit 120, and the radius of the second circular light spot 100b is greater than the first circular light spot 100a. Similarly, the first illumination unit 110 and the second illumination unit 120 may also both be provided with a first light-transmitting plate 121 for focusing the light S, as long as the radius of the formed second circular light spot 100b is greater than the first circular light spot 100a.

[0065] Furthermore, the second optical module 200 includes a third illumination unit 210, which is used to form a third circular light spot 200a on the surgical field area, the center of the 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 different from the radius of the first circular light spot 100a.

[0066] like Figure 7 As shown, in the first embodiment, the radius of the third circular light spot 200a is R3, R3=180-220 mm, 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, D3=2 R3.

[0067] like Figure 8As shown, in the lighting device 10 designed in this way, the first optical module 100 and the second optical module 200 form three superimposed light spots with diameters of D1, D2 and D3 in the surgical field area. By controlling the ratio of the three superimposed light spots, the size of the overall light spot in the surgical field area can be adjusted, and the illumination of the six superimposed light spots can also be adjusted to meet the lighting requirements of the surgical field area in different application scenarios.

[0068] Furthermore, if Fig. 9 As shown, the third illumination unit 210 is provided with a second light-transmitting plate 211, the surface of which has uniform protrusions. The second light-transmitting plate 211 is used to adjust the radius of the light spot so that the radius of the third circular light spot 200a is larger than the first circular light spot 100a.

[0069] The second light-transmitting plate 211 may be a surface with a concave-convex structure in the shape of beads, scales or other shapes. In the first embodiment, the surface of the second light-transmitting plate 211 has a bead-shaped concave-convex structure. The radius R3 of the third circular light spot 200a formed on the surgical field by the light S passing through the second light-transmitting plate 211 is greater than the radius R1 of the first circular light spot 100a. In the first embodiment, the radius of the third circular light spot 200a is R3=180~220mm.

[0070] In the second embodiment, if Figure 2 As shown, the surface of the second light-transmitting plate 211 presents a scaly concave-convex structure, and the radius of the third circular light spot 200a is R3=220~250mm. Compared with the first embodiment, the second light-transmitting plate 211 in the second embodiment is expanded to obtain a third circular light spot 200a with a larger size. It can be understood that those skilled in the art can select the second light-transmitting plate 211 with different concave-convex structures to expand the radius of the third circular light spot 200a according to actual surgical application requirements.

[0071] Furthermore, if Figure 1 , 2 As shown in Figure 10, the second optical module 200 also includes a fourth illumination unit 220, which is used to form a fourth circular light spot 200b on the surgical field area. 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 adjacent second circular light spots 100b and fourth circular light spots 200b intersect.

[0072] This arrangement can effectively improve the uniformity and comprehensiveness of the illumination in the surgical field, ensuring that medical staff can clearly observe and operate in the surgical field. At the same time, this arrangement makes the angle layout between the second circular light spot 100b and the fourth circular light spot 200b reasonable, which can provide a more accurate lighting effect.

[0073] The radii of each second circular light spot 100b and each fourth circular light spot 200b may be the same or different, and the sizes of each second circular light spot 100b and each fourth circular light spot 200b may be changed by adjustment to change the radii of the two. When the radii of the second circular light spot 100b and the fourth circular light spot 200b are different, the two superimposed light spots formed form a natural transition, and such a setting can achieve a variety of lighting effects.

[0074] Furthermore, the distance between the centers of the two circular light spots formed by each optical module on the surgical field is equal, and the radius of the second circular light spot 100b is the same as that of the fourth circular light spot 200b.

[0075] like Figure 8 and 10 As shown, in some embodiments, since the distance between the center of the second circular light spot 100b and the first circular light spot 100a, and the distance between the center of the fourth circular light spot 200b and the third circular light spot 200a are equal, the radius of the second circular light spot 100b and the fourth circular light spot 200b are also the same, and the second circular light spot 100b and the fourth circular light spot 200b are equiangular arrays, together forming a superimposed light spot with a diameter of D3 with more uniform illumination. By adjusting the ratio of the three superimposed light spots with diameters of D1, D2 and D3, the size change of the overall surgical field light spot can be achieved.

[0076] In addition, in order to make the radius of the fourth circular light spot 200b the same as that of the second circular light spot 100b, in some embodiments, as Figure 2 and Fig.11 As shown, a third light-transmitting plate 221 may also be installed on the fourth optical module. The third light-transmitting plate 221 is used to adjust the size of the fourth circular light spot 200b. The principle is the same as that of the first light-transmitting plate 121 and the second light-transmitting plate 211, which will not be repeated here.

[0077] Furthermore, the radius of each circular light spot can be adjusted;

[0078] And / or, the illumination of each circular light spot can be adjusted;

[0079] And / or, the switching action of each lighting unit can be controlled individually.

[0080] By adjusting the radius of the circular light spots with radii R1, R2, R3 and R4, the diameters D1, D2 and D3 of each superimposed light spot can be changed. Fig.12As shown, the minimum radius of the surgical field light spot is Rmin=D1 / 2, and the maximum radius is Rmax=D2 / 2. Changing the diameters D1 and D2 of the superimposed light spots can change the minimum radius and the maximum radius of the surgical field light spot and change the size of the surgical field light spot. Changing the diameter D3 of the superimposed light spot can change the transition effect of the surgical field light spot, thereby forming various types of surgical field light spots and providing lighting for various surgical scenarios.

[0081] It can be understood that the radius and / or illumination of each circular light spot can be adjusted individually, or each first circular light spot 100a, each second circular light spot 100b, each third circular light spot 200a and each fourth circular light spot 200b can be adjusted separately; the switching action of each illumination unit can be adjusted individually, or each first illumination unit 110, second illumination unit 120, third illumination unit 210 and fourth illumination unit 220 can be adjusted separately.

[0082] Preferably, the lighting device 10 can preset multiple lighting modes. In the same lighting device 10, 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.

[0083] 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 slopes 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.

[0084] As an example, in the first embodiment, the radius R1 of the first circular light spot 100a can be adjusted within the range of 120 mm to 160 mm, the radius R2 of the second circular light spot 100b can be adjusted within the range of 180 mm to 220 mm, the radius R3 of the third circular light spot 200a can be adjusted within the range of 180 mm to 220 mm, and the radius R4 of the fourth circular light spot 200b can be adjusted within the range of 180 mm to 220 mm.

[0085] In the second embodiment, the radius R1 of the first circular light spot 100a can be adjusted within the range of 120 mm to 160 mm, the radius R2 of the second circular light spot 100b can be adjusted within the range of 180 mm to 220 mm, the radius R3 of the third circular light spot 200a can be adjusted within the range of 220 mm to 250 mm, and the radius R4 of the fourth circular light spot 200b can be adjusted within the range of 180 mm to 220 mm.

[0086] It should be noted that, regardless of the first embodiment or the second embodiment, the sizes 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 are all examples, and the utility model does not limit the sizes and 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.

[0087] Preferably, if Fig.13 As shown, Fig.13 is a schematic diagram of the illumination distribution of the surgical field light spot. Fig.13 In the figure, the x-axis is the distance from any point on the surgical field spot to the center C of the surgical field area. x=0 means that the distance from the surgical field spot to the center C of the surgical field area is 0, that is, the center of the surgical field spot. The y-axis represents the percentage of the illuminance of any point on the surgical field spot to the maximum illuminance of the surgical field spot. Curve f is the illuminance distribution curve of the surgical field spot. (0, 1.0) means that the illuminance percentage of the surgical field spot at the center C of the surgical field area is 100%. It can be seen that when x=(-300, 0], the y value continues to increase, and the slope of curve f is positive. When x=[0, 300), the y value continues to decrease, and the slope of curve f is negative. The illuminance of the surgical field spot shows a trend of gradually decreasing as it moves away from the center C of the surgical field area radially, and finally forms a surgical field spot with the highest illuminance at the center C of the surgical field area and gradually decreasing illuminance from the center C of the surgical field area to the outside, which can provide high-brightness small area illumination in the surgical field area.

[0088] The radius of each circular light spot is greater than 100 mm and less than 300 mm, and the illumination of the surgical field light spot reaches 100,000 lux, ensuring that a small-sized, high-intensity light spot can be formed in the center C of the surgical field area to meet the lighting requirements of the operation.

[0089] 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: It comprises a plurality of optical modules, each of which comprises two illumination units, each of which forms a corresponding circular light spot on a surgical field area at a preset distance from a light-emitting surface, and the two circular light spots formed by any one of the optical modules intersect to form a light spot pattern; The optical module includes 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 light spot patterns formed by the first optical module and the second optical module are different, and the light spot patterns are arranged in an array with equal angles on the same circumference with the center of the surgical field area as the center of the circle to form surgical field light spots, wherein adjacent light spot patterns at least partially overlap.

2. The lighting device according to claim 1, characterized in that: The two illumination units in each of the optical modules are integrally formed and have parallel optical axes, and the distance between the centers of the two circular light spots formed by each of the optical modules on the surgical field is equal.

3. The lighting device according to any one of claims 1 or 2, 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; In the lighting device, the center of each first circular light spot overlaps with the center of the surgical field area, and each second circular light spot is arranged at equal angles on the same circle with the center of the surgical field area as the center, and adjacent second circular light spots intersect.

4. The lighting device according to claim 3, characterized in that: 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.

5. The lighting device according to claim 4, characterized in that: A first light-transmitting plate is disposed on the first illumination unit and / or the second illumination unit, the surface of the first light-transmitting plate has uniform protrusions, and the first light-transmitting plate is used to adjust the radius of the light spot so that the radius of the second circular light spot is larger than that of the first circular light spot.

6. The lighting device according to claim 3, characterized in that: The second optical module includes a third illumination unit, which is used to form a third circular light spot on the surgical field area. The center of the third circular light spot overlaps with the center of the surgical field area, and the radius of the third circular light spot is different from the radius of the first circular light spot.

7. The lighting device according to claim 6, characterized in that: The radius of the third circular light spot is greater than the radius of the first circular light spot.

8. The lighting device according to claim 7, characterized in that: The third illumination unit is provided with a second light-transmitting plate, the surface of the second light-transmitting plate has uniform protrusions, and the second light-transmitting plate is used to adjust the radius of the light spot so that the radius of the third circular light spot is larger than that of the first circular light spot.

9. The lighting device according to claim 6, characterized in that: The second optical module also includes a fourth illumination unit, which is used to form a fourth circular light spot on the surgical field area. 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.

10. The lighting device according to claim 1, characterized in that: The radius of each circular light spot can be adjusted; And / or, the illumination of each circular light spot can be adjusted; And / or, the switching action of each lighting unit can be controlled individually.

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