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, and a first optical module or a second optical module in the first lighting system can form an elliptical light spot and a circular light spot on a surgical field area. By adjusting the first optical module and the second optical module, dynamic conversion between an elliptical light spot and a circular light spot can be achieved, the diameter or illumination of the circular light spot and the long-short axis proportion or illumination of the elliptical light spot can be adjusted, and the illumination requirements of surgical field areas in different scenes can be met; a second illumination light spot formed by the second illumination system increases the illumination area on the operation field area, and the visual fatigue of the operation personnel is 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, eyestrain of an operator can be relieved, and the system is suitable for various operation environments such as non-external wound operations or cavity operations.

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] A 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 high-brightness light spot has a single color and a single shape. Staring at a high-brightness light spot with a single color and shape 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 of a single surgical field light spot formed by a surgical shadowless lamp on the surgical field area in the related technology.

[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 first optical modules and a plurality of second optical modules, wherein the first optical modules and the second optical modules correspond to equiangular arrays on two circumferences with the same center;

[0006] The first optical module and the second optical module each include three integrally formed illumination units, and in the first optical module or the second optical module, at least one illumination unit forms an elliptical light spot on a surgical field area at a preset distance from a light-emitting surface, and the remaining illumination units form corresponding circular light spots on the surgical field area at a preset distance from the light-emitting surface; each of the elliptical light spots and each of the circular light spots are arranged in an equiangular array around the center of the surgical field area to form a first illumination light spot, wherein adjacent elliptical light spots at least partially overlap, and adjacent circular light spots also at least partially overlap;

[0007] The lighting device further comprises a second lighting system, and / or a third lighting system;

[0008] The second illumination system forms a second illumination spot on the 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;

[0009] The third illumination system forms a third illumination spot on the surgical field area at a preset distance from the light-emitting surface, and the color temperature and / or wavelength of the third illumination spot are different from those of the first illumination spot and the second illumination spot.

[0010] Furthermore, the illumination of the second illumination spot is 0.5% to 1% of the illumination of the first illumination spot.

[0011] Furthermore, the radius of the first illumination spot is 30% to 60% of the outer diameter of the second illumination spot.

[0012] Furthermore, the second lighting system includes at least one first lens module, the first lens module includes at least two TIR lenses; the first lens module is arranged between two adjacent second optical modules.

[0013] Furthermore, the third illumination spot is circular and the center of the circle overlaps with the center of the surgical field area.

[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 circle of the first optical module and the second optical module in an equiangular array. The three-primary color LED lamp beads are arranged in an equiangular array on the light mixing plate along the circumferential 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] Furthermore, a single first optical module and a corresponding second optical module are centrally symmetrically arranged;

[0017] The first optical module and the second optical module each include a first illumination unit, a second illumination unit and a third illumination unit formed in one piece;

[0018] The light emitting surfaces of the first light unit, the second light unit and the third light unit are located in the same plane, and the distance from the center of the first light unit to the center of the second light unit is equal to the distance from the first light unit to the center of the third light unit.

[0019] Further, each of the first illumination unit, the second illumination unit and the third illumination unit is used to form a first light spot, a second light spot and a third light spot on the surgical field area respectively;

[0020] The centers of the second light spot and the third light spot overlap and are located at the center of the surgical field area; the first light spots are distributed in an equiangular array around the center of the surgical field area.

[0021] Further, the first light spot, the second light spot and the third light spot formed by the first optical module are circular, and the second light spot and the third light spot have different diameters;

[0022] The first light spot and the second light spot formed by the second optical module are circular, and the third light spot is elliptical; the third light spot formed by the second optical modules arranged opposite to each other on the circumference is symmetrical about the center of the surgical field area.

[0023] Furthermore, the third illumination unit of the first optical module is provided with a first light-transmitting plate having uniform protrusions on its surface;

[0024] The third illumination unit of the second optical module is provided with a second light-transmitting plate with a stripe plate on its surface.

[0025] Compared with the prior art, the lighting device in the utility model has the following beneficial effects:

[0026] In the first lighting system, the first optical module or the second optical module forms an elliptical light spot and a circular light spot in the surgical field. The first optical module and the second optical module can be adjusted to dynamically convert the elliptical light spot and the circular light spot. The diameter or illumination of the circular light spot, the ratio of the major and minor axes of the elliptical light spot or the illumination can be adjusted to meet the lighting requirements of the surgical field in different scenes. Various light spot shapes can be changed to relieve the visual fatigue of the surgeons.

[0027] The second illumination spot formed by the second illumination system increases the illumination area on the surgical field, and the inner diameter of the second illumination spot is smaller than the inner diameter of the first illumination spot, so that the first illumination spot and the second illumination spot can be evenly transitioned, further reducing the visual fatigue of the surgeon;

[0028] 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 eyestrain of surgeons can be alleviated. The system is suitable for various surgical environments such as non-invasive surgery or cavity surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the lighting device in the embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the distribution of the first optical module and the second optical module of the first lighting system in an embodiment of the utility model;

[0031] Figure 3 is a schematic diagram of a multi-viewing structure of a first optical module in an embodiment of the utility model;

[0032] Figure 4 It is the second illumination spot diagram in the embodiment of the utility model;

[0033] Figure 5 This is a graph showing the illumination distribution curve of the second illumination spot in the embodiment of the utility model;

[0034] Figure 6 Schematic diagram of the first illumination spot and the second illumination spot in the embodiment of the utility model;

[0035] Figure 7 It is a schematic diagram of the overall structure of the second lighting system in the embodiment of the utility model;

[0036] Figure 8 It is a schematic diagram of the overall structure of the third lighting system in the embodiment of the utility model;

[0037] Fig. 9 It is a schematic diagram of the coordinate position relationship of the first illumination unit, the second illumination unit and the third illumination unit on the light emitting surface in an embodiment of the utility model;

[0038] Fig.10 This is a schematic diagram of light irradiation when the preset distance from the first optical module to the surgical field area is D=1000mm in an embodiment of the utility model;

[0039] Fig.11 1 is a schematic diagram of light irradiation and light spot distribution when the preset distance from the first optical module to the surgical field area is D=1000mm in an embodiment of the utility model;

[0040] Fig.12 1 is a schematic diagram of light irradiation and light spot distribution when the preset distance from the second optical module to the surgical field area is D=1000mm in an embodiment of the utility model;

[0041] Fig.13 It is a schematic diagram of the superposition of light spots formed by the first optical module in the lighting device on the surgical field area in an embodiment of the utility model;

[0042] Fig.14 is a schematic diagram of the superposition of light spots formed by the second optical module in the lighting device on the surgical field area in an embodiment of the utility model;

[0043] Fig.15 is a schematic diagram of light spot superposition formed by the first illumination system on the surgical field area in an embodiment of the utility model;

[0044] Fig.16 It is a schematic diagram of the coordinate position relationship of the light spots formed on the surgical field area when the first illumination unit, the second illumination unit and the third illumination unit in the first optical module are at a preset distance of D=1000mm in the embodiment of the utility model;

[0045] Fig.17 It is a schematic diagram of the coordinate position relationship of the light spots formed on the surgical field area when the first illumination unit, the second illumination unit and the third illumination unit in the second optical module are at a preset distance of D=1000mm in the embodiment of the utility model;

[0046] Fig.18 In the embodiment of the utility model, two second optical modules are arranged opposite to each other and the elliptical spot diagram formed by them on the surgical field area;

[0047] Fig.19 It is a schematic diagram of the angle transformation of the elliptical light spot formed by the second optical module on the surgical field area in the embodiment of the utility model.

[0048] In the accompanying drawings, each reference numeral represents:

[0049] 1. First lighting system; 10a. First lighting spot; 11. First optical module; 12. Second optical module; 111 / 121. First illumination unit; 112 / 122. Second illumination unit; 113 / 123. Third illumination unit; 111a / 121a. First light spot; 112a / 122a. Second light spot; 113a / 123a. Third light spot; 114. PCB board; 115. First light-transmitting plate; 124. Stripe plate;

[0050] 2. Second illumination system; 20a. Second illumination spot; 21. TIR lens;

[0051] 3. The third lighting system; 31. Three-primary-color LED lamp beads; 32. Light mixing board; C. Center of surgical field; S. Light. DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] 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.

[0055] Example:

[0056] See also Figures 1 to 19 , in this embodiment, a lighting device includes a first lighting system 1;

[0057] The first lighting system 1 includes a plurality of first optical modules 11 and a plurality of second optical modules 12, wherein the first optical modules 11 and the second optical modules 12 are arranged in equal angles on two circumferences of the same center;

[0058] The first optical module 11 and the second optical module 12 each include three integrally formed illumination units. In the first optical module 11 or the second optical module 12, at least one illumination unit forms an elliptical light spot on a surgical field area at a preset distance from the light emitting surface, and the remaining illumination units form corresponding circular light spots on a surgical field area at a preset distance from the light emitting surface; each elliptical light spot and each circular light spot are arranged in an equiangular array around the center of the surgical field area to form a first illumination light spot 10a, wherein adjacent elliptical light spots at least partially overlap, and adjacent circular light spots also at least partially overlap;

[0059] The lighting device further comprises a second lighting system 2 and / or a third lighting system 3;

[0060] The second illumination system 2 forms a second illumination spot 20a on the surgical field area at a preset distance from the light emitting surface. The second illumination spot 20a is annular and takes the center of the surgical field area as the center of the circle. The radius of the first illumination spot 10a is larger than the inner diameter of the second illumination spot 20a and smaller than the outer diameter of the second illumination spot 20a.

[0061] The third illumination system 3 forms a third illumination spot on the surgical field area at a preset distance from the light emitting surface, and the color temperature and / or wavelength of the third illumination spot are different from those of the first illumination spot 10a and the second illumination spot 20a.

[0062] In this embodiment, in the first lighting system 1, the first optical module 11 or the second optical module 12 forms an elliptical light spot and a circular light spot in the surgical field area. By adjusting the first optical module 11 and the second optical module 12, the dynamic conversion between the elliptical light spot and the circular light spot can be realized, and the diameter or illumination of the circular light spot, the major-minor axis ratio or illumination of the elliptical light spot can be adjusted to meet the lighting requirements of the surgical field area in different scenes, and various light spot shapes can be changed to relieve the visual fatigue of the surgical staff;

[0063] The second illumination spot 20a formed by the second illumination system 2 increases the illumination area on the surgical field, and the inner diameter of the second illumination spot 20a is smaller than the inner diameter of the first illumination spot 10a, so that the first illumination spot 10a and the second illumination spot 20a can transition evenly, further reducing the visual fatigue of the surgeon;

[0064] The color temperature and / or wavelength of the third illumination spot formed by the third illumination system 3 are different from those of the first illumination spot 10a and the second illumination spot 20a. By setting the color temperature and / or wavelength of the third illumination spot, the eyestrain of the surgeons can be alleviated, and the surgeon is suitable for various surgical environments such as non-invasive surgery or cavity surgery.

[0065] It should be known that the lighting device is at least provided with a first lighting system 1, on this basis, the lighting device is also provided with any one of a second lighting system 2 and a third lighting system 3, or the second lighting system 2 and the third lighting system 3 are provided at the same time.

[0066] 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 can be turned on alone, the third lighting system 3 can be turned on alone, and the second lighting system 2 can only be turned on after the first lighting system 1 is turned on.

[0067] Specifically, Figure 3 As shown, the illumination unit includes a white LED light source and a lens, and the white LED light source is integrated on the PCB board 114 .

[0068] 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 in the surgical field, which can be better suitable for intracavitary surgery and provide environmental and atmosphere lighting functions.

[0069] Alternatively, the color temperature of the third illumination spot can also be different from the first illumination spot 10a. Usually, the color temperature of the first illumination spot 10a for highlight illumination in the surgical field is between 5000K and 6000K to provide a bright first illumination spot 10a. The color temperature of the third illumination spot is different from that of the first illumination spot 10a. For example, the color temperature of the third illumination spot is between 4000K and 5000K. The light spot within this color temperature range can provide auxiliary illumination brightness without being dazzling, and can well relieve eye fatigue of surgical personnel.

[0070] In addition, in this embodiment, the first optical module 11 and the second optical module 12 are arranged in equal angles on two circles with the same center, and the second optical module 12 is located on the outer circumference of the first optical module 11 .

[0071] Furthermore, the illumination of the second illumination spot 20a is 0.5% to 1% of the illumination of the first illumination spot 10a.

[0072] The first illumination spot 10a forms a main light spot on the surgical field area, providing the main illumination for the surgical field area. The illumination of the first illumination spot 10a is between 10000 lux and 16000 lux. The second illumination system 2 forms a second illumination spot 20a on the surgical field area. The second illumination spot 20a is a non-compliant surgical field light spot in the shape of a ring, such as Figure 4 and 5 As shown, Figure 4 is a second illumination spot 20a, Figure 5 : is an illumination distribution curve diagram of the second illumination spot 20a. It can be seen that the maximum illumination of the second illumination spot 20a is between 1500 lux and 1700 lux.

[0073] The illumination target of the second illumination system 2 is also the surgical field center C. The inner diameter of the second illumination spot 20a obtained by the second illumination system 2 is slightly smaller than the diameter of the first illumination spot 10a generated by the first illumination system 1, thereby achieving a smooth connection between the light spots of the two systems. The second illumination spot 20a provides auxiliary illumination for the surgical staff. The illumination of the second illumination spot 20a is lower than that of the first illumination spot 10a, which effectively relieves the fatigue of the surgical staff from staring at the bright light spot for a long time.

[0074] Furthermore, the radius of the first illumination spot 10a is 30% to 60% of the outer diameter of the second illumination spot 20a.

[0075] Specifically, Figure 6 As shown, in some embodiments, the radius of the first illumination spot 10a is about 300 mm, and the outer diameter of the second illumination spot 20a is about 800 mm. The first illumination spot 10a and the second illumination spot 20a are evenly transitioned, and have a good illumination effect.

[0076] Furthermore, the second illumination system 2 includes at least one first lens module, and the first lens module includes at least two TIR lenses 21 ; the first lens module is disposed between two adjacent second optical modules 12 .

[0077] like Figure 1 As shown, in the same first lens module, each TIR lens 21 is distributed along the radial tangent of the circumference of each second optical module 12 in an equiangular array.

[0078] In other embodiments, each TIR lens 21 can be distributed radially along the circumference of an equiangular array of each second optical module 12, and each TIR lens 21 can also be arranged through other geometric relationships, as long as the second illumination system 2 can form a second illumination spot 20a in a circular shape whose center overlaps with the center of the surgical field area.

[0079] Specifically, Figure 7 As shown, the TIR lens 21 is a scale-type TIR lens 21, and two TIR lenses 21 are integrally formed to achieve a hollow spot effect and obtain a second circular spot. It should be noted that the utility model does not limit the number of TIR lenses 21 in the same first lens module. In practical applications, a suitable number of TIR lenses 21 can be selected according to the size of the second illumination spot 20a to be formed and the desired hollow spot effect.

[0080] Furthermore, the third illumination spot is circular and the center of the circle overlaps with the center of the surgical field area.

[0081] Specifically, the radius of the third illumination spot is 300 mm. It should be understood that the size of the third illumination spot is not limited here. Preferably, the radius of the third illumination spot is equal to the radius of the first illumination spot 10a, or the radius of the third illumination spot is slightly smaller than the radius of the first illumination spot 10a, which can add color illumination to the highlight illumination area of ​​the surgical field area and provide environmental lighting for non-external invasive surgery or cavity surgery.

[0082] Furthermore, if Figure 8 As shown, the third lighting system 3 includes a three-primary color LED lamp bead 31 and a light mixing board 32 for electrically connecting to the PCB board 114;

[0083] The light mixing plate 32 is in a circular shape and its center overlaps with the center of the circle of the equal-angle array of the first optical module 11 and the second optical module 12. The three-primary-color LED lamp beads 31 are arranged at equal angles on the light mixing plate 32 along the circular trajectory of the light mixing plate 32. The light mixing plate 32 is arranged on one side of the light emitting surface of the three-primary-color LED lamp beads 31.

[0084] Three-primary color lamp beads usually refer to LED lamp beads with three colors of red (R), green (G), and blue (B), also known as RGBLED. Three-primary color lamp beads have light-emitting elements of three basic colors, and can produce a variety of different colors of light by mixing these three basic colors to different degrees.

[0085] In this embodiment, the three-primary-color LED lamp beads 31 are mounted on the PCB board 114 according to a circular trajectory array. After being mixed by the light mixing plate 32, the three-primary-color LED lamp beads 31 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 on the surgical field area can be changed.

[0086] The operator can select the desired color of the third illumination spot, which is suitable for intracavitary surgery or non-surgical surgery, and can also present a uniform and soft lighting effect, which can reduce the visual fatigue of the operator.

[0087] In other embodiments, the third lighting system 3 can also be configured as at least one second lens module, the second lens module can include at least one TIR lens 21, and the second lens module is arranged between two adjacent second optical modules 12. The TIR lens 21 includes a non-white LED light source, the LED light source in the TIR lens 21 can be a single LED light source, or a combination of multiple different LED light sources, or multiple TIR lenses 21 with a single LED light source can form a third lighting spot on the surgical field area, multiple LED light sources of different colors can be mixed to form a light spot of a specific color on the surgical field area, and third lighting spots of different colors can be obtained by adjusting the light intensity of different LED light sources.

[0088] Furthermore, if Figure 2 As shown, a single first optical module 11 and a corresponding second optical module 12 are centrally symmetrically arranged;

[0089] The first optical module 11 and the second optical module 12 each include a first illumination unit, a second illumination unit and a third illumination unit formed in one piece;

[0090] The light emitting surfaces of the first illumination unit, the second illumination unit and the third illumination unit are located in the same plane, and the distance from the center of the first illumination unit to the center of the second illumination unit is equal to the distance from the first illumination unit to the center of the third illumination unit.

[0091] The first illumination unit, the second illumination unit and the third illumination unit are not simply spliced ​​together with their optical axes parallel. The first illumination unit, the second illumination unit and the third illumination unit form a certain geometric distribution relationship when they are integrated into one piece, that is, the distance from the center of the first illumination unit to the center of the second illumination unit is equal to the distance from the first illumination unit to the center of the third illumination unit.

[0092] Specifically, Fig. 9 As shown, in some embodiments, a first rectangular coordinate system is established with the light emitting surfaces of the first illumination unit 111, the second illumination unit 112, and the third illumination unit 113 of the first optical module 11 as references, and the preset distance between the first illumination unit 111, the second illumination unit 112, and the third illumination unit 113 is D=1000mm (that is, the distance between the light emitting surface and the plane where the surgical field area is located is D=1000mm), and the connection between the center point of the second illumination unit 112 and the center point of the third illumination unit 113 is D=1000mm. The line is used as the x-axis of the first rectangular coordinate system, the straight line perpendicular to the midpoint of the line connecting the centers of the second illumination unit 112 and the third illumination unit 113 is used as the y-axis of the first rectangular coordinate system, and the midpoint of the line connecting the center points of the second illumination unit 112 and the third illumination unit 113 is used as the first origin (0, 0). The coordinates of the center point of the first illumination unit 111 are (0, d1), the coordinates of the center point of the second illumination unit 112 are (-d2, 0), and the coordinates of the center point of the third illumination unit 113 are (d2, 0).

[0093] After the geometric distribution relationship among the first illumination unit 111, the second illumination unit 112 and the third illumination unit 113 is determined, the deflection angle of each illumination unit can be calculated according to the distance from the light emitting surface of the first illumination unit 111, the second illumination unit 112 and the third illumination unit 113 to the plane of the surgical field area, and the position of the center C of the surgical field area that each circular light spot needs to illuminate.

[0094] The geometrical distribution relationship among the first illumination unit 121 , the second illumination unit 122 and the third illumination unit 123 in the second optical module 12 is the same as that of the first optical module 11 , and will not be described in detail herein.

[0095] As an example, Fig.10 This is a schematic diagram of the light S irradiation of the first illumination unit 111, the second illumination unit 112 and the third illumination unit 113 in the first optical module 11 when the preset distance is D=1000mm. The center of the first circular light spot needs to coincide with the center C of the surgical field area. The preset distance between the first illumination unit 111, the second illumination unit 112 and the third illumination unit 113 is D=1000mm. The multiple first illumination units 111 are arranged at equal angles on an arc with a radius of R1. The deflection angle of each illumination unit can be calculated based on the above information.

[0096] In addition, the preset distance D of the first illumination unit, the second illumination unit and the third illumination unit can be changed and is not limited to D=1000mm. Those skilled in the art can calculate and set the deflection angle of each illumination unit accordingly according to the geometric distribution relationship provided by the first illumination unit 111, the second illumination unit 112 and the third illumination unit 113 of the first optical module 11 according to different usage scenario requirements and the distance D between the light emitting surface and the illumination surface to manufacture the required lighting device.

[0097] Preferably, the number of the first optical modules 11 and the second optical modules 12 is an even number. In the present embodiment, the number of the first optical modules 11 and the second optical modules 12 are both 12. The present application does not limit the number of the first optical modules 11 and the second optical modules 12. The number of the first optical modules 11 and the second optical modules 12 can be increased or decreased according to the actual application scenario.

[0098] Furthermore, if Fig.11 and 12 As shown, each of the first illumination unit 111 / 121, the second illumination unit 112 / 122 and the third illumination unit 113 / 123 is used to form a first light spot 111a / 121a, a second light spot 112a / 122a and a third light spot 113a / 123a on the surgical field area, respectively;

[0099] like Fig.13 and 14 As shown, the centers of the second light spot and the third light spot overlap and are located in the center of the surgical field area; the first light spot is distributed in an equiangular array around the center of the surgical field area.

[0100] With such an arrangement, the brightness distribution of the first illumination spot 10a formed by the first optical module 11 and the second optical module 12 on the surgical field is uniform, and the switching action of a single first optical module 11 and a second optical module 12 and the illumination of the corresponding light spot can be controlled, so that a variety of light spot combinations can be formed.

[0101] Furthermore, if Fig.11 As shown, the first light spot 111a, the second light spot 112a and the third light spot 113a formed by the first optical module 11 are circular, and the diameters of the second light spot 112a and the third light spot 113a are different;

[0102] like Fig.12 As shown, the first light spot 121a and the second light spot 122a formed by the second optical module 12 are circular, and the third light spot 123a is elliptical; the third light spot 123a formed by the second optical modules 12 arranged opposite to each other on the circumference is symmetrical about the center of the surgical field area.

[0103] like Fig.16As shown, in some embodiments, a second rectangular coordinate system is established with the illumination surfaces of the first illumination unit 111, the second illumination unit 112 and the third illumination unit 113 of the first optical module 11 as a reference, the preset distance between the first illumination unit 111, the second illumination unit 112 and the third illumination unit 113 is D=1000mm, and the first light spot 111a, the second light spot 112a and the third light spot 113a formed by the first optical module 11 are located on the illumination surface.

[0104] A perpendicular line passing through the center point of the second light spot 112a and connecting the center points of the first light spot 111a and the second light spot 112a is used as the x-axis of the second rectangular coordinate system, and a line connecting the center points of the first light spot 111a and the second light spot 112a is used as the y-axis of the second rectangular coordinate system. The coordinates of the center point of the first light spot 111a are (0, d1'), the coordinates of the center point of the second light spot 112a are (0, 0), and the coordinates of the center point of the third light spot 113a are (0, 0).

[0105] like Fig.13 The figure shows a schematic diagram of the superposition of three light spots formed by the first optical module 11 of the lighting device in the surgical field area. The first optical module 11 in the lighting device forms a superposition effect of three light spots in the surgical field area, forming three superimposed light spots with diameters of D1, D2 and D3. The types of superimposed light spots are rich, so that the superimposed light spots are clearly displayed when the lighting device illuminates the surgical field area. The size of the superimposed light spots can be adjusted by controlling the intensities of the three superimposed light spots.

[0106] like Fig.17 As shown, in some embodiments, a third rectangular coordinate system is established with the illumination surfaces of the first illumination unit 121, the second illumination unit 122 and the third illumination unit 123 of the second optical module 12 as a reference, and the first light spot 121a, the second light spot 122a and the third light spot 123a formed by the second optical module 12 are located on the illumination surface.

[0107] A perpendicular line passing through the center point of the second light spot 122a and connecting the center points of the first light spot 121a and the second light spot 122a is used as the x-axis of the second rectangular coordinate system, and a line connecting the center points of the first light spot 121a and the second light spot 122a is used as the y-axis of the second rectangular coordinate system. The coordinates of the center point of the first light spot 121a are (0, d1'), the coordinates of the center point of the second light spot 122a are (0, 0), and the coordinates of the center point of the third light spot 123a are (0, 0).

[0108] In this embodiment, d1 and d1' are equal. In other embodiments, d1 and d1' may be different.

[0109] like Fig.14The figure shows a schematic diagram of the superposition of three light spots formed by the second optical module 12 of the lighting device on the surgical field area. The second optical module 12 in the lighting device forms a superposition effect of three light spots on the surgical field area, forming three superimposed light spots with diameters of D4, D5 and D6. Fig.15 As shown, the first optical module 11 and the second optical module 12 form a total of six light spots in the surgical field area, whose diameters are D1, D2, D3, D4, D5 and D6 respectively. The intensity ratios of these six light spots are controlled to achieve overall size adjustment of the first illumination spot 10a, and the current input into the illumination device is controlled to achieve overall illumination adjustment of the first illumination spot 10a.

[0110] The second optical modules 12 arranged opposite to each other on the circumference are driven separately to form two elliptical third light spots 123a on the surgical field area. The two third light spots 123a overlap to achieve the elliptical surgical field light spot effect as shown in the figure. Fig.18 and 19 As shown, by selecting the second optical modules 12 relatively arranged at different positions on the circumference and adjusting the illumination of the third light spot 123a formed thereby, the angle conversion of the elliptical surgical field light spot can be achieved.

[0111] Furthermore, if Figure 2 and 3 As shown, a first light-transmitting plate 115 having uniform protrusions on its surface is disposed on the third illumination unit 113 of the first optical module 11;

[0112] The third illumination unit 123 of the second optical module 12 is provided with a second light-transmitting plate having a stripe plate 124 on its surface.

[0113] The first light-transmitting plate 115 is used to adjust the diameter of the third light spot 113a formed by the first optical module 11, so that the diameters of the second light spot 112a and the third light spot 113a are different. As an example, the first light-transmitting plate 115 can be a bead plate with a uniform array of micro beads on the surface, or a scale plate with a uniform array of scales. Figure 3 Examples of different concave-convex structures on the surfaces of the first light-transmitting plate 115 and the second light-transmitting plate are given. Figure 3 The surface of the first light-transmitting plate 115 shown in FIG. 1 has a uniform array of micro-beads.

[0114] Figure 3The structure of the stripe plate 124 on the surface of the second light-transmitting plate is also shown. The second light-transmitting plate is used to adjust the shape of the third light spot 123a formed by the first optical module 11. When the third illumination unit 123 of the second optical module 12 is not provided with the second light-transmitting plate, the light S emitted by the third illumination unit 123 forms a circular light spot on the surgical field area. When the third illumination unit 123 of the second optical module 12 is provided with the second light-transmitting plate, the light S emitted by the third illumination unit 123 can change the propagation path of the light S when passing through the stripe plate 124, thereby forming an elliptical light spot on the surgical field area, that is, the third light spot 123a is elliptical.

[0115] By replacing the stripe plates 124 of different sizes, the ratio of the major and minor axes of the elliptical light spot can be changed to obtain the third light spots 123 a of different sizes.

[0116] 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 first optical modules and a plurality of second optical modules, wherein the first optical modules and the second optical modules correspond to equiangular arrays on two circumferences with the same center; The first optical module and the second optical module each include three integrally formed illumination units, and in the first optical module or the second optical module, at least one illumination unit forms an elliptical light spot on a surgical field area at a preset distance from a light-emitting surface, and the remaining illumination units form corresponding circular light spots on the surgical field area at a preset distance from the light-emitting surface; each of the elliptical light spots and each of the circular light spots are arranged in an equiangular array around the center of the surgical field area to form a first illumination light spot, wherein adjacent elliptical light spots at least partially overlap, and adjacent circular light spots also at least partially overlap; 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 the 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 the surgical field area at a preset distance from the light-emitting surface, and the color temperature and / or wavelength of the third illumination spot are 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 illumination system comprises at least one first lens module, wherein the first lens module comprises at least two TIR lenses; the first lens module is arranged between two adjacent second 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 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 circle of the first optical module and the second optical module in an equiangular array. The three-primary color LED lamp beads are arranged in an equiangular array on the light mixing plate along the circumferential 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.

7. The lighting device according to claim 1, characterized in that: A single first optical module and a corresponding second optical module are centrally symmetrically arranged; The first optical module and the second optical module each include a first illumination unit, a second illumination unit and a third illumination unit formed in one piece; The light emitting surfaces of the first light unit, the second light unit and the third light unit are located in the same plane, and the distance from the center of the first light unit to the center of the second light unit is equal to the distance from the first light unit to the center of the third light unit.

8. The lighting device according to claim 7, characterized in that: Each of the first illumination unit, the second illumination unit and the third illumination unit is used to form a first light spot, a second light spot and a third light spot on the surgical field area respectively; The centers of the second light spot and the third light spot overlap and are located at the center of the surgical field area; the first light spots are distributed in an equiangular array around the center of the surgical field area.

9. The lighting device according to claim 8, characterized in that: The first light spot, the second light spot and the third light spot formed by the first optical module are circular, and the second light spot and the third light spot have different diameters; The first light spot and the second light spot formed by the second optical module are circular, and the third light spot is elliptical; the third light spot formed by the second optical modules arranged opposite to each other on the circumference is symmetrical about the center of the surgical field area.

10. The lighting device according to claim 9, characterized in that: The third illumination unit of the first optical module is provided with a first light-transmitting plate having uniform protrusions on its surface; The third illumination unit of the second optical module is provided with a second light-transmitting plate with a stripe plate on its surface.

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