A lighting device

Abstract

This invention discloses a lighting device comprising multiple first illumination modules arranged on the same circumference. Second illumination modules, corresponding to the first illumination modules, are arranged at equal angles on the outer circumference of each first illumination module. The individual equal-angle arrays of first and second illumination modules are centrally symmetrically arranged. Each first and second illumination module includes a first illumination unit that forms a first circular light spot in the surgical field, a second illumination unit that forms a second circular light spot in the surgical field, and a third illumination unit that forms an elliptical light spot in the surgical field. This application increases the illumination range of the lighting device in the surgical field by using the first and second illumination modules. The first, second, and third illumination units enable dynamic conversion between circular and elliptical light spots, as well as adjustment of the size and orientation of the light spots, thereby adapting to the lighting needs of surgical field areas with different shapes and angles.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a lighting device. Background Technology

[0002] Currently, the standard surgical lights used in hospitals are circular, which does not meet the needs of some surgeries with long and narrow wounds or examinations of specific conditions. Some users try to create elliptical spots by overlapping the circular spots, but this method produces poor results. To adapt to the lighting needs of surgical fields of different sizes and directions, it is necessary to increase or decrease the number of circular spots and move and repeatedly adjust the lamp body. This results in poor lighting effect and inconvenient adjustment of the lighting device.

[0003] Therefore, existing technologies still need to be improved and enhanced. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a lighting device that solves the problems of the limited lighting effect and inconvenient adjustment of surgical lights in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An illumination device includes a plurality of first illumination modules arranged on the same circumference. Second illumination modules corresponding to the first illumination modules are arranged at equal angles on the outer circumference of the first illumination modules. The first illumination modules and second illumination modules arranged at equal angles are centrally symmetrical. Each of the first illumination module and the second illumination module includes a first illumination unit that forms a first circular light spot in the surgical field area, a second illumination unit that forms a second circular light spot in the surgical field area, and a third illumination unit that forms an elliptical light spot in the surgical field area.

[0007] The distance between the center of the first illumination unit and the center of the second illumination unit is equal to the distance between the center of the first illumination unit and the center of the third illumination unit.

[0008] The center of the first circular light spot does not coincide with the center of the second circular light spot, while the center of the second circular light spot coincides with the center of the elliptical light spot.

[0009] The centers of the first circular light spots formed by the multiple first illumination modules located on the circumference in the surgical field area coincide, and the second circular light spots and elliptical light spots formed by the two opposing first illumination modules on the circumference in the surgical field area are symmetrical about the center of the surgical field area.

[0010] The center of the second circular light spot formed by multiple second illumination modules on the circumference in the surgical field area coincides with the center of the elliptical light spot, and the first circular light spot formed by two opposing second illumination modules on the circumference is symmetrical about the center of the surgical field area.

[0011] The diameter of the first circular light spot is smaller than the diameter of the second circular light spot.

[0012] The light-emitting surfaces of the first illumination unit, the second illumination unit, and the third illumination unit are located on the same plane.

[0013] The centers of the light spots of the first, second, and third illumination units on the 1000mm illumination surface are located on the same straight line.

[0014] The third illumination unit includes a light-transmitting element and a striped plate. The striped plate is disposed on the light-emitting surface of the light-transmitting element and is made of polycarbonate, polymethyl methacrylate, or glass.

[0015] The first illumination module and the second illumination module include at least three illumination units, and the light spots formed by the illumination units include at least two circular light spots with different diameters and at least one elliptical light spot.

[0016] Compared to existing technologies, the present invention provides an illumination device comprising multiple first illumination modules arranged on the same circumference. Second illumination modules, corresponding to the first illumination modules, are arranged at equal angles on the outer circumference of each first illumination module. The first and second illumination modules in the equal-angle array are centrally symmetrically arranged. Each first and second illumination module includes a first illumination unit that forms a first circular light spot in the surgical field, a second illumination unit that forms a second circular light spot in the surgical field, and a third illumination unit that forms an elliptical light spot in the surgical field. In this application, multiple first and second illumination modules are respectively arranged on two concentric circumferences, increasing the illumination range of the illumination device in the surgical field and enabling illumination of surgical field areas at different angles. Through the first, second, and third illumination units, dynamic conversion between circular and elliptical light spots can be achieved, and the diameter of the circular light spot, the ratio of the major and minor axes of the elliptical light spot, and the direction of the elliptical light spot can be adjusted to adapt to the illumination needs of surgical field areas of different shapes and angles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the layout of the lighting device provided by the present invention.

[0018] Figure 2 This is a schematic diagram showing the layout of the first lighting unit, the second lighting unit, and the third lighting unit in the lighting module provided by the present invention.

[0019] Figure 3 This is a schematic diagram of the assembly structure of the illumination module provided by the present invention.

[0020] Figure 4 A schematic diagram of light irradiation on a 1000mm light-emitting surface provided by the first and second light-emitting modules of the present invention.

[0021] Figure 5 This is a schematic diagram showing the coordinate position relationship of the first illumination unit, the second illumination unit, and the third illumination unit provided by the present invention.

[0022] Figure 6 To provide the present invention according to Figure 5 A schematic diagram of the light spot layout formed on the irradiated surface by the arrangement of the medium illumination units.

[0023] Figure 7 A schematic diagram of a light spot formed by illumination from a single first illumination module provided by the present invention.

[0024] Figure 8 A schematic diagram of a light spot formed by illumination from a single second illumination module provided by the present invention.

[0025] Figure 9 A schematic diagram of the light spot formed by the 12 first illumination modules arranged in an equal-angle array according to the present invention.

[0026] Figure 10 This is a schematic diagram of the light spot formed by the equal-angle array of 12 second illumination modules provided by the present invention.

[0027] Figure 11 A schematic diagram of the light spots formed by the illumination of 12 first illumination modules and 12 second illumination modules provided by the present invention.

[0028] Figure 12 This is a schematic diagram showing the layout of the lighting device from another angle, which is provided for the present invention.

[0029] Figure 13 A schematic diagram showing the formation of an elliptical light spot by symmetrically arranged first and second illumination modules provided by the present invention.

[0030] Figure 14 for Figure 12 A schematic diagram of the partial elliptical light spots that can be formed after adjusting the intensity ratio of the elliptical light spots formed by the first and second lighting modules that are symmetrically set in the middle.

[0031] Figure 15 for Figure 12 A schematic diagram showing the angle transformation of two symmetrical elliptical light spots in different directions, controlled by adjusting their brightness.

[0032] Figure 16This is a schematic diagram of the structure of the light-transmitting component and the striped plate provided by the present invention at an angle before assembly.

[0033] Figure 17 This is a structural schematic diagram of the light-transmitting component and striped plate provided by the present invention from another angle before assembly.

[0034] Figure 18 This is a schematic diagram comparing the light spot formed without irradiation by the striped plate and the light spot formed after irradiation by the striped plate, as provided by the present invention.

[0035] Figure 19 This is a schematic diagram of the structure of a single stripe on a striped plate provided by the present invention.

[0036] Figure 20 This is a schematic diagram showing the optical angle A corresponding to different radii of curvature R provided by the present invention.

[0037] Figure 21 The diagram shows the effect of the elliptical light spots corresponding to the radii of curvature R1 and R2 provided by the present invention.

[0038] Reference numerals: First illumination module 10, Second illumination module 20, First illumination unit 1, First circular light spot 11, Second illumination unit 2, Second circular light spot 21, Third illumination unit 3, Elliptical light spot 31, Transmitting element 32, Striped plate 33. Detailed Implementation

[0039] To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0040] It should be noted that when a component is referred to as being "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0041] It should also be noted that the directional terms such as left, right, up, and down in the embodiments of the present invention are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0042] This invention provides a lighting device; please refer to [link / reference]. Figures 1-12The lighting device includes a plurality of first lighting modules 10 arranged on the same circumference. Second lighting modules 20 corresponding to the first lighting modules 10 are arranged at equal angles on the outer circumference of the first lighting modules 10. The first lighting modules 10 and the second lighting modules 20 arranged at equal angles are centrally symmetrical at the midpoint of the line connecting their geometric centers. The first lighting module 10 and the second lighting module 20 each include a first lighting unit 1 that forms a first circular light spot 11 in the surgical field area, a second lighting unit 2 that forms a second circular light spot 21 in the surgical field area, and a third lighting unit 3 that forms an elliptical light spot 31 in the surgical field area.

[0043] In this application, multiple first illumination modules 10 and second illumination modules 20 are respectively arranged on two concentric circles, which increases the illumination range of the illumination device in the surgical field area and can illuminate the surgical field area at different angles. In this application, the switching action and brightness of each first illumination unit 1, second illumination unit 2 and third illumination unit 3 can be controlled independently. For different surgical field light spot illumination needs, light sources with different light intensities can be selected. Combining the first illumination unit 1, second illumination unit 2 and third illumination unit 3 to form an illumination module increases the diversity of light spots formed by the illumination device. By adjusting the light intensity, illuminance and brightness of the illumination unit, the dynamic conversion between circular light spots and elliptical light spots 31 can be realized, as well as the diameter of the circular light spot, the ratio of the major and minor axes of the elliptical light spot 31 and the direction of the elliptical light spot 31 can be adjusted, thereby adapting to the illumination needs of surgical field areas with different shapes and angles. The lighting device of this application can not only illuminate and form various different light spots, but also adapt to different lighting needs by controlling different lighting modules. Furthermore, the light spots formed by multiple lighting modules can be superimposed to improve the clarity of the surgical field light spot. In addition, this application eliminates the need to superimpose circular light spots to form elliptical light spots; it can directly form elliptical light spots with clearer outlines, making it easier for users to observe.

[0044] Furthermore, the number of the first illumination module 10 and the second illumination module 20 is 4N+2, that is, the number of illumination modules in the illumination device is 2*(4+2N), where N is a natural number. This application does not limit the number of the first illumination module 10 and the second illumination module 20. The number of the first illumination module 10 and the second illumination module 20 can be increased or decreased according to the actual needs of the application scenario. The switching and brightness of a single first illumination module 10 and the second illumination module 20 can be controlled independently. The even number of illumination modules allows the symmetrically arranged two illumination modules to superimpose the brightness of the light spots formed by the two along the same axis during illumination, thereby widening the illumination area of ​​the illumination module and making the superposition effect of the formed light spots more uniform. In addition, the three illumination units are combined into one to form an illumination module and arranged in a ring. On the one hand, this increases the illumination range. On the other hand, it can adapt to the illumination needs of different angle surgical field areas by controlling the illumination modules in different directions individually or simultaneously. This avoids the problem of needing to adjust the optical axis of the illumination module again in the traditional method, which is cumbersome and time-consuming.

[0045] In the embodiments of this application, please refer to Figures 1-8 The first illumination module 10 and the second illumination module 20 each contain three illumination units. The first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 form a first circular light spot 11, a second circular light spot 21, and an elliptical light spot 31, respectively. The diameter of the first circular light spot 11 is smaller than the diameter of the second circular light spot 21. The difference between the first circular light spot 11 and the second circular light spot 21 allows for greater variety in light spot size, thus adapting to the illumination needs of various surgical field areas. The addition of the elliptical light spot 31 further enriches the shape and size of the light spots. The first and second illumination modules include at least three illumination units, and the light spots formed by these units include at least two circular light spots with different diameters and at least one elliptical light spot, resulting in a greater variety of light spot types and more uniform illumination. To adapt to the lighting needs of different surgical field areas, the first lighting module 10 and the second lighting module 20 have at least three lighting units. That is, a single lighting module may include three, four, five, six, or more lighting units. However, the light spots formed by the multiple lighting units in the surgical field area must include three different types of light spots: large circular light spots, small circular light spots, and elliptical light spots 31. There is no limit to the number of these three different types of light spots. In other words, the light spots formed by the multiple lighting units in the surgical field area include at least two circular light spots and elliptical light spots 31 with different areas. By setting multiple lighting units, the brightness of the surgical field area can be improved, and it can adapt to wounds of different sizes and shapes. In this application, the first lighting module 10 and the second lighting module 20 are arranged at a medium angle and are as close to each other as possible and are both set on the same horizontal plane. The center of symmetry of the first lighting module 10 and the second lighting module 20, which are set at equal angles relative to each other, is the midpoint of the line connecting their centers.

[0046] Please see Figure 5 and Figure 6 In this application, in order to determine the optical axis angles of the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3, the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 are pre-arranged to form a certain geometric positional relationship on the light-emitting surface, and at the same time, the three illumination units are arranged to form a corresponding geometric positional relationship on the irradiation surface 1000mm away from the light-emitting surface. The optical axis angle of each illumination unit can be obtained by the corresponding positional relationship between each illumination unit and its corresponding light spot and the height of the light-emitting surface from the irradiation surface.

[0047] A first rectangular coordinate system is established based on the light-emitting surfaces of the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 (e.g., ...). Figure 5 As shown), the height of the first rectangular coordinate system from the irradiated surface is 1000mm. The first X-axis is the line between the center of the second irradiated unit 2 and the center of the third irradiated unit 3. The first Y-axis is the straight line between the center of the first irradiated unit 1 and the midpoint of the line between the centers of the second irradiated unit 2 and the third irradiated unit 3. The intersection of the first X-axis and the first Y-axis is the first origin (0,0). The center coordinates of the first irradiated unit 1 are (0,d1), the center coordinates of the second irradiated unit 2 are (d2,0), and the center coordinates of the third irradiated unit 3 are (-d2,0).

[0048] Please see Figure 6 A second rectangular coordinate system is established based on the illumination surfaces of the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 (i.e., the plane where the surgical field is located). Figure 6 As shown, the first circular light spot 11, the second circular light spot 21, and the elliptical light spot 31 are located on the irradiation surface. The straight line connecting the centers of the first circular light spot 11, the second circular light spot 21, and the elliptical light spot 31 is taken as the second Y-axis, and the straight line passing through the center of the elliptical light spot 31 and perpendicular to the second Y-axis is taken as the second X-axis. The intersection of the second X-axis and the second Y-axis is taken as the second origin (0,0), so that the center coordinates of the first circular light spot 11 are (0, d1'), and the center coordinates of the second circular light spot 21 and the center coordinates of the elliptical light spot are (0,0).

[0049] It should be noted that d1 ranges from 30 to 60 mm, and d2 ranges from 10 to 30 mm. d1 and d1' are only distinguished on the light-emitting surface and the irradiation surface, and their sizes are the same. In this application, the first and second rectangular coordinate systems are virtual and are only used to describe the geometric positional relationship between the illumination units, the positional relationship between the light spots, and the positional relationship between the illumination units and their corresponding light spots when the distance between the light-emitting surface and the irradiation surface is 1000 mm. The optical axis angle of the illumination unit can be obtained based on the center coordinates of the illumination unit and its corresponding center coordinates, as well as the distance between the light-emitting surface and the irradiation surface. That is, a right-angled triangle relationship is established between the light-emitting surface and the irradiation surface. The height distance of 1000 mm between the light-emitting surface and the irradiation surface is taken as the right side, and the difference length between the center coordinates of the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 and their corresponding light spots on the irradiation surface is taken as the hypotenuse. The required deflection angle of different illumination units can then be calculated. Furthermore, the height difference between the light-emitting surface and the irradiation surface is set at 1000mm in this application because the optimal height difference between the surgical lamp and the surgical field surface (i.e., the irradiation surface in this application, the plane of the light spot where the light unit is irradiated) in actual surgical lighting is 1000mm. This application does not impose specific restrictions on the height between the surgical lamp and the irradiation surface in actual situations, but the calculation of the deflection angle of the light unit is the same as the principle described in this application.

[0050] Further, please refer to Figures 5-8 The distance between the center of the first illumination unit 1 and the center of the second illumination unit 2 is equal to the distance between the center of the first illumination unit 1 and the center of the third illumination unit 3. In this application, the relative positions of the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 are set according to a preset geometric distribution relationship (i.e., the line connecting the centers of the three illumination units forms an isosceles triangle), and the optical axis angles of the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 are adjusted according to the center and shape of the desired light spot. The embodiments of this application only illustrate the relative positional relationship of the light spots formed by the illumination of the three illumination units. In the embodiments of this application, 12 first illumination modules 10 and 12 second illumination modules 20 are provided. Therefore, according to the circular array of light spots formed by a single illumination module, all the light spots formed by the illumination of the 12 first illumination modules 10 and 12 second illumination modules 20 in the embodiments can be obtained.

[0051] Further, please refer to Figures 4-7 and Figure 9The centers of the first circular light spots 11 formed by multiple first illumination modules 10 located on the circumference in the surgical field area coincide. The second circular light spots 21 and elliptical light spots 31 formed by two oppositely arranged first illumination modules 10 on the circumference in the surgical field area are symmetrical about the center of the surgical field area. In this embodiment, the center of the surgical field light spot is taken as the origin of the first light spot. The first illumination modules 10 are arranged on a circumference with a radius of r1 and a center at a vertical height of 1000mm from the origin of the first light spot. The center of the first circular light spot 11 formed by the first illumination unit 1 in the first illumination module 10 coincides with the origin of the first light spot. The centers of the second circular light spot 21 formed by the second illumination unit 2 in the first illumination module 10 and the elliptical light spot 31 formed by the third illumination unit 3 are both d1' away from the origin of the first light spot. Figure 7 The coordinate system in the diagram uses the major axis of the elliptical light spot 31 and the straight line passing through the center of the first circular light spot 11 and perpendicular to the major axis of the elliptical light spot 31 as the X and Y axes, respectively. These coordinates are used to represent the center positions of the first circular light spot 11, the second circular light spot 21, and the elliptical light spot 31 formed by the illumination module 10. Figure 7 This is primarily to describe the positional relationship of the light spot corresponding to the first illumination module 10 on the illumination surface, given the known height difference between the light-emitting surface and the illumination surface, and the optical axis deflection angle of the illumination unit. Please refer to... Figure 7 and Figure 9 In this application, after a single first illumination module 10 is arrayed at equal angles on a circle with a radius of r1, 12 first illumination modules 10 arranged on the same circle can be obtained in the embodiment. At this time, the 12 first illumination modules 10 obtain three superimposed light spots with sizes D1, D2 and D3 on the illumination surface shell. D1, D2 and D3 are only used to indicate that the size of the light spots is different and there is no specific numerical limitation.

[0052] Further, please refer to Figures 4-6 , Figure 8 and Figure 10 The centers of the second circular light spots 21 formed by multiple second illumination modules 20 located on the circumference in the surgical field area coincide with the centers of the elliptical light spots 31. The first circular light spots 11 formed by two opposing second illumination modules 20 on the circumference are symmetrical about the center of the surgical field area. In this embodiment, the surgical field light spot is taken as the origin of the second light spot. The second illumination modules 20 are arranged on a circle with a radius of r2, centered at a vertical height of 1000mm from the origin of the light spot. The centers of the second circular light spots 21 formed by the second illumination unit 2 and the elliptical light spots 31 formed by the third illumination unit 3 in the second illumination module 20 both coincide with the origin of the second light spot. The distance between the center of the first circular light spot 11 formed by the first illumination unit 1 in the second illumination module 20 and the origin of the first light spot is d1'. Figure 8The coordinate system in the diagram uses the minor and major axes of the elliptical light spot 31 as the X and Y axes, respectively. The specific coordinates are used to represent the center positions of the first circular light spot 11, the second circular light spot 21, and the elliptical light spot 31 formed by the second illumination module 20. Figure 8 This is primarily to describe the positional relationship of the light spot corresponding to the second illumination module 20 on the illumination surface, given the known height difference between the light-emitting surface and the illumination surface, and the optical axis deflection angle of the illumination unit. Please refer to... Figure 8 and Figure 10 In this application, by arranging a single second illumination module 20 at equal angles on a circle with radius r2, 12 second illumination modules 20 arranged on the same circle can be obtained in the embodiment. At this time, the 12 second illumination modules 20 can obtain three superimposed light spots with sizes D4, D5, and D6 on the illumination surface. Here, D4, D5, and D6 are only used to indicate different sizes of light spots and have no specific numerical limitations. It should be noted that in this application, the circles where the first illumination module 10 and the second illumination module 20 are located are concentric, where r1 ranges from 130 to 180 mm. The smaller the difference between r2 and r1, the more concentrated the illumination area of ​​the first illumination module 10 and the second illumination module 20 is, and the better the illumination effect. r2 is greater than r1, but the difference between r2 and r1 needs to be set according to the size of the illumination module to avoid interference after the first illumination module and the second illumination module are illuminated.

[0053] Figure 4 Point A is defined as the point where the origins of the first and second light spots coincide. Point A refers to the center of the first circular light spot 11 corresponding to the first light unit 1 on the irradiated surface in the first lighting module 10, and the center of the second circular light spot 21 and the elliptical light spot 31 corresponding to the second light unit 2 and the third light unit 3 on the irradiated surface in the second lighting module 20. Point B refers to the center of the second circular light spot 21 and the elliptical light spot 31 corresponding to the second light unit 2 and the third light unit 3 on the irradiated surface in the first lighting module 10, and the center of the first circular light spot 11 corresponding to the first light unit 1 on the irradiated surface in the first lighting module 10. The distance between points A and B is d1'.

[0054] Will Figure 9 and Figure 10 By superimposing the three light spots obtained separately, we can obtain... Figure 11 Six superimposed light spots with medium sizes D1, D2, D3, D4, D5, and D6. Please refer to... Figure 12 and Figure 13 By individually controlling the symmetrically positioned illumination modules on the inner ring (the circumference where the first illumination module 10 is located) and the outer ring (the circumference where the second illumination module 20 is located), four elliptical light spots 31 (two of which overlap) can be obtained, such as... Figure 14The size of the elliptical light spot 31 can be adjusted by adjusting the intensity ratio of the inner and outer rings of the elliptical light spot 31. For example... Figure 15 By controlling the brightness of two symmetrical elliptical light spots 31 in different directions, the direction conversion of the elliptical light spot 31 can be achieved.

[0055] Furthermore, the light-emitting surfaces of the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 are located on the same plane, ensuring that the outline of the light spots formed by multiple illumination units on the illumination surface is more accurate, and the outline of the light spot formed by the superposition of multiple light spots is clearer. The first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 are adjusted and oriented according to requirements, and after shaping, the three illumination units are made into a single integrated design and integrally injection molded to obtain an illumination module. Then, the first illumination module 10 and the second illumination module 20 are arranged in an equiangular array to obtain the lighting device of this application. The integrated design of the three illumination units makes the optical parameters more accurate, the structure simpler, the installation more convenient, the wiring connections fewer, and the later maintenance more convenient.

[0056] Furthermore, the centers of the light spots of the first illumination unit 1, the second illumination unit 2, and the third illumination unit 3 on the 1000mm illumination surface are located on the same straight line, ensuring that the first circular light spot 11, the second circular light spot 21, and the elliptical light spot 31 can be arranged along the same axis, thereby widening the illumination range on the same axis and enabling the formation of multiple light spots on the same axis to meet different lighting needs.

[0057] Furthermore, the center of the first circular light spot 11 does not coincide with the center of the second circular light spot 21, while the center of the second circular light spot 21 coincides with the center of the elliptical light spot 31, which increases the illumination area and the illumination intensity within the area.

[0058] Further, please refer to Figures 16-21The third illumination unit 3 includes a light-transmitting element 32 and a striped plate 33. The striped plate 33 is disposed on the light-emitting surface of the light-transmitting element 32 and is made of polycarbonate, polymethyl methacrylate, or glass. Both the first illumination unit 1 and the second illumination unit 2 include a light-transmitting element 32 and a circuit board with an LED light source. The light-transmitting element is correspondingly connected to the circuit board with the LED light source. The light-transmitting element 32 is a TIR lens or a reflector. In this application, the optical axis deflection angle of the illumination unit refers to the deflection angle of the lens when the three lenses are combined into an illumination module. Preferably, the light-transmitting element 32 is a TIR lens. When the striped plate 33 is not provided on the end face of the TIR lens, a circular light spot is formed on the illumination surface. By providing the striped plate 33 on the light-emitting surface of the TIR lens, the propagation path of the light is changed, resulting in an elliptical light spot 31 forming on the illumination surface. Traditional methods involve directly machining stripes onto the TIR lens. This results in a thicker TIR lens, significant shrinkage during injection molding, and uncontrollable precision. Furthermore, it introduces more stray light, affecting the formation of the elliptical spot 31. In this application, the stripe plate 33 can be made of hot-injection molded polycarbonate or polymethyl methacrylate, or cold-worked glass. The stripe plate 33 is coaxially aligned with the TIR lens. Figure 19 The striped plate 33 has undulating stripes evenly distributed on it, such as... Figure 20 The undulating stripes on the stripe plate 33 can expand a circular light spot into an elliptical light spot 31, and the size of the elliptical light spot 31 can be adjusted by regulating the undulation amplitude of the stripes. The specific undulation amplitude of the stripes on the stripe plate 33 can be set according to the required elliptical light spot 31 to meet usage requirements. Figure 20 By adjusting the radius of curvature R of the stripes on the stripe plate 33, the emission angle A can be changed. The larger the radius of curvature R, the larger the emission angle A. R and A do not have specific numerical values. Figure 21 This allows for the adjustment of the ratio of the major and minor axes of the elliptical light spot, thereby enabling the production of elliptical light spots of different sizes.

[0059] In summary, the present invention provides an illumination device comprising a plurality of first illumination modules arranged on the same circumference, wherein second illumination modules corresponding to the first illumination modules are arranged at equal angles on the outer circumference of the first illumination modules, and the first and second illumination modules arranged at equal angles are centrally symmetrically arranged; each of the first and second illumination modules includes a first illumination unit that forms a first circular light spot in the surgical field area, a second illumination unit that forms a second circular light spot in the surgical field area, and a third illumination unit that forms an elliptical light spot in the surgical field area. In this application, multiple first illumination modules and second illumination modules are respectively set on two concentric circles, which increases the illumination range of the lighting device in the surgical field area, and can also illuminate the surgical field area at different angles. Through the first illumination unit, the second illumination unit, and the third illumination unit, the dynamic conversion between circular light spots and elliptical light spots can be realized, and the diameter of the circular light spot, the ratio of the major and minor axes of the elliptical light spot, and the direction of the elliptical light spot can be adjusted, thereby adapting to the lighting needs of surgical field areas with different shapes and angles.

[0060] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A lighting device, characterized in that, The lighting device includes multiple first lighting modules (10) arranged on the same circumference. Second lighting modules (20) corresponding to the first lighting modules (10) are arranged at equal angles on the outer circumference of the first lighting modules (10). The first lighting modules (10) and the second lighting modules (20) arranged at equal angles are centrally symmetrical at the midpoint of the line connecting their geometric centers. The first lighting module (10) and the second lighting module (20) each include a first lighting unit (1) that forms a first circular light spot (11) in the surgical field area, a second lighting unit (2) that forms a second circular light spot (21) in the surgical field area, and a third lighting unit (3) that forms an elliptical light spot (31) in the surgical field area. The center of the first circular light spot (11) does not coincide with the center of the second circular light spot (21), and the center of the second circular light spot (21) coincides with the center of the elliptical light spot (31); The centers of the first circular light spots (11) formed by the multiple first illumination modules (10) located on the circumference in the surgical field area coincide, and the second circular light spots (21) and the elliptical light spots (31) formed by the two opposing first illumination modules (10) on the circumference in the surgical field area are symmetrical about the center of the surgical field area. The center of the second circular spot (21) formed by multiple second illumination modules (20) on the circumference in the surgical field area coincides with the center of the elliptical spot (31), and the first circular spot (11) formed by two opposing second illumination modules (20) on the circumference is symmetrical about the center of the surgical field area.

2. The lighting device according to claim 1, characterized in that, The distance between the center of the first illumination unit (1) and the center of the second illumination unit (2) is equal to the distance between the center of the first illumination unit (1) and the center of the third illumination unit (3).

3. The lighting device according to claim 1, characterized in that, The diameter of the first circular light spot (11) is smaller than the diameter of the second circular light spot (21).

4. The lighting device according to claim 2, characterized in that, The light-emitting surfaces of the first illumination unit (1), the second illumination unit (2), and the third illumination unit (3) are located on the same plane.

5. The lighting device according to claim 4, characterized in that, The centers of the light spots of the first illumination unit (1), the second illumination unit (2), and the third illumination unit (3) on the 1000mm illumination surface are located on the same straight line.

6. The lighting device according to claim 1, characterized in that, The third illumination unit (3) includes a light-transmitting element (32) and a striped plate (33). The striped plate (33) is disposed on the light-emitting surface of the light-transmitting element (32). The striped plate (33) is made of polycarbonate, polymethyl methacrylate or glass.

7. The lighting device according to claim 1, characterized in that, The first illumination module (10) and the second illumination module (20) include at least three illumination units, and the light spots formed by the illumination units include at least two circular light spots with different diameters and at least one elliptical light spot (31).

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