Operation shadowless lamp

Abstract

The utility model is suitable for the technical field of medical lighting equipment, and provides an operation shadowless lamp which comprises a lamp panel, and at least one set of lighting modules are arranged on the lamp panel. The lighting module comprises a lighting unit for emitting light, a first reflecting surface arranged on a light path and a second reflecting surface arranged on the light path reflected by the first reflecting surface, and the first reflecting surface completely reflects the light; wherein the first reflecting surface and the second reflecting surface are oppositely arranged, and the angle between the first reflecting surface and the second reflecting surface is smaller than 45 degrees. Light emitted by the lighting unit passes through the first refracting face so that the light cannot directly irradiate the surgical field area, and light spots fall into the surgical field area through secondary refraction of the second refracting face so as to light the surgical field area. And discomfort caused by glare generated by stray light of the lighting module or direct light of the LED lighting unit possibly seen by raising the head of an operation operator is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical lighting equipment, and particularly relates to a surgical shadowless lamp. Background Art

[0002] At present, most surgical shadowless lamps use LEDs as lighting units. Compared with traditional halogen lamps, using LED cold lighting units as lighting units makes it possible to diversify the design of surgical shadowless lamps. Different from the surgical shadowless lamp with a traditional halogen lamp lighting unit, which is basically composed of a large reflector cup and a central bulb, when using an LED lighting unit, due to the limited power of a single LED, multiple lighting units are often arranged on the lamp panel according to a corresponding layout to achieve the illumination of the surgical light spot. These lighting units usually consist of an LED light source and a condenser lens, and each unit shines directly down onto the surgical operation surface. As Figure 1 shown, the lighting unit of the traditional surgical lamp device simply uses a lens to irradiate directly downward. However, for an LED Lambertian lighting unit, the lens will have a small amount of uncontrollable conditions for the large-angle or boundary light rays of the LED, which will cause a certain amount of stray light. As Figure 2 shown, some light rays will be transmitted through the total reflection wall; in addition, the central part of the traditional TIR lens unit is equivalent to a convex lens, which usually projects the image of the LED chip, and the light is often very strong, which may cause dizziness to the user during the rotation of the surgical lamp. Summary of the Utility Model

[0003] An embodiment of the utility model provides a surgical shadowless lamp, aiming to solve the problems that only writing the independent claim can solve, namely, part of the light rays will be transmitted through the total reflection wall of the condenser lens in the traditional surgical lamp and the strong light is likely to cause dizziness to the user.

[0004] The embodiment of the utility model is implemented as follows. A surgical shadowless lamp includes a lamp panel, and at least one set of lighting modules are arranged on the lamp panel;

[0005] The lighting module includes a lighting unit that emits light, a first reflection surface arranged on the light path, and a second reflection surface arranged on the light path after being reflected by the first reflection surface. The first reflection surface completely reflects the light;

[0006] Wherein, the first reflection surface and the second reflection surface are arranged facing each other, and the angle from the first reflection surface to the second reflection surface is less than 45°.

[0007] In one embodiment, the lighting module is circular, and a circular light band is formed by arranging a plurality of the lighting units in a circular arrangement;

[0008] The first reflecting surface and the second reflecting surface are respectively arranged around the circular light band, wherein the first reflecting surface and the second reflecting surface are respectively located on the inner and outer sides of the circular light band.

[0009] In one embodiment, the first reflecting surface is placed on the inner side of the circular light band, and the second reflecting surface is placed on the outer side of the circular light band.

[0010] In one embodiment, the incident angle of the light on the first reflecting surface is 45°.

[0011] In one embodiment, three sets of the lighting modules are provided and the three sets of the lighting modules are sleeved.

[0012] In one embodiment, the three sets of the lighting modules are, from the inner circle to the outer circle, a first lighting module, a second lighting module, and a third lighting module in sequence. The incident angle of the second reflecting surface of the first lighting module is β1, the incident angle of the second reflecting surface of the second lighting module is β2, and the incident angle of the second reflecting surface of the third lighting module is β3, wherein β1 > β2 > β3.

[0013] In one embodiment, the first lighting module, the second lighting module, and the third lighting module respectively form concentric light spots of different sizes in the surgical field area, wherein the light spot area of the first lighting module < the light spot area of the second lighting module < the light spot area of the third lighting module;

[0014] And:

[0015] (R n +L n )cot2β n =H - h n (n = 1, 2, 3);

[0016] R n is the radius of the circular light band in the lighting module;

[0017] L n is the distance from the first reflecting surface to the second reflecting surface in the lighting module;

[0018] H is the distance from the lamp panel to the surgical field area;

[0019] h n is the distance from the lamp panel to the first reflecting surface.

[0020] In one embodiment, a single lighting unit forms a light spot of the same size in the surgical field area, and the radius of the light spot is r;

[0021] And:

[0022] [Rn +L n -(n - 1)×a]×cot2β n =H - h n (n = 1, 2, 3);

[0023] R n is the radius of the circular light band in the lighting module;

[0024] L n is the distance from the first reflecting surface to the second reflecting surface in the lighting module;

[0025] H is the distance from the lamp panel to the surgical field area;

[0026] h n is the distance from the lamp panel to the first reflecting surface;

[0027] a < r < 2a.

[0028] In one embodiment, the number of lighting units provided in the three groups of the lighting modules is equal.

[0029] In one embodiment, the lighting unit includes a light source and a TIR lens covering the light source.

[0030] The embodiment of the present utility model also provides the independent claim solution of the second set of claims.

[0031] Furthermore, the dependent claim solution of the first set of claims.

[0032] Furthermore, the dependent claim solution of the first set of claims.

[0033] The embodiment of the present utility model also provides the independent claim solution of the third set of claims.

[0034] Furthermore, the dependent claim solution of the first set of claims.

[0035] Furthermore, the dependent claim solution of the first set of claims.

[0036] The beneficial effects achieved by the present utility model are as follows: by providing the first refracting surface and the second refracting surface to change the light path of the light emitted by the lighting unit twice, the light emitted by the lighting unit passes through the first refracting surface so that the light cannot directly shine on the surgical field area, and then through the second refraction of the second refracting surface, the light spot falls into the surgical field area to illuminate the surgical field area. It effectively avoids the discomfort caused by the glare generated by the stray light of the lighting module or the direct light of the LED lighting unit that the surgical operator may see when looking up. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic structural diagram of a surgical shadowless lamp provided by the prior art;

[0038] Figure 2 It is a schematic diagram of the light transmission of the total reflection wall of the surgical shadowless lamp provided by the prior art;

[0039] Figure 3 It is a schematic structural diagram of the surgical shadowless lamp provided by an embodiment of the present invention;

[0040] Figure 4 It is a schematic structural diagram of the lighting module provided by an embodiment of the present invention;

[0041] Figure 5 It is a schematic optical path diagram of the surgical shadowless lamp provided by Embodiment 5 of the present invention;

[0042] Figure 6 It is a top view of the illumination spot of the surgical shadowless lamp provided by Embodiment 5 of the present invention;

[0043] Figure 7 It is a schematic optical path diagram of the surgical shadowless lamp provided by Embodiment 6 of the present invention;

[0044] Figure 8 It is a top view of the circular spot formed by each lighting module of the surgical shadowless lamp provided by Embodiment 6 of the present invention;

[0045] Figure 9 It is a top view of the illumination spot of the surgical shadowless lamp provided by Embodiment 6 of the present invention;

[0046] Figure 10 It is a schematic three-dimensional structure diagram of the surgical shadowless lamp provided by an embodiment of the present invention.

[0047] Explanation of reference numerals:

[0048] 100, surgical shadowless lamp; 110, lamp panel; 120, lighting module; 121, lighting unit; 122, first reflection surface; 123, second reflection surface; 1201, first lighting module; 1202, second lighting module; 1203, third lighting module. Detailed implementation manners

[0049] In order to make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and cannot be understood as a limitation of the present invention. In addition, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0050] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0051] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0052] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0054] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0055] The present utility model changes the optical path of the light emitted by the lighting unit twice by providing a first refracting surface and a second refracting surface. The light emitted by the lighting unit passes through the first refracting surface so that the light cannot directly irradiate the surgical field area, and then through the second refraction of the second refracting surface, the light spot falls into the surgical field area to illuminate the surgical field area. This effectively avoids the discomfort caused by the glare generated by the stray light of the lighting module or the direct irradiation of the LED lighting unit that the surgeon may see when looking up.

[0056] Embodiment 1

[0057] As Figure 3 shown, this embodiment provides a surgical shadowless lamp, which includes a lamp panel 110, and at least one set of lighting modules 120 are arranged on the lamp panel 110;

[0058] The lighting module 120 includes a lighting unit 121 that emits light, a first reflecting surface 122 arranged on the optical path, and a second reflecting surface 123 arranged on the optical path of the light reflected by the first reflecting surface 122. The first reflecting surface 122 completely reflects the light;

[0059] Wherein, the first reflecting surface 122 and the second reflecting surface 123 are arranged opposite to each other, and the angle from the first reflecting surface 122 to the second reflecting surface 123 is less than 45°.

[0060] The lighting module 120 is arranged on the lamp panel 110. The lamp panel 110 provides support and limitation for the lighting module 120. Usually, the lamp panel 110 is connected to a spring arm, and the lighting module 120 is driven by the lamp panel 110 to move, which is convenient for doctors to adjust the lighting area during surgery.

[0061] The lighting module 120 includes a lighting unit 121 that emits light. The lighting unit 121 can be arranged on the lamp panel 110. The lighting unit 121 emits light, and a first reflecting surface 122 is arranged on the path of the light propagation. All the light emitted by the lighting unit 121 is blocked by the first reflecting surface 122 and reflected by the first reflecting surface 122. The first reflecting surface 122 changes the direction of the light for the first time, that is, the light emitted by the lighting unit 121 cannot directly shine on the surgical field area to form a lighting spot.

[0062] The surgical field refers to the range that can be seen during the operation. The surgical field area is the area that needs to be illuminated during the operation. When the lighting spot of the operating lamp falls into the surgical field area, the surgical field area can be illuminated.

[0063] The light reflected by the first reflecting surface 122 continues to propagate in a straight line, and a second reflecting surface 123 is arranged on this propagation path. The second reflecting surface 123 is arranged opposite to the first reflecting surface 122, and the angle from the first reflecting surface 122 to the second reflecting surface 123 is less than 45°. When the angle from the first reflecting surface 122 to the second reflecting surface 123 is 45°, the reflected light of the first reflecting surface 122 enters from the normal line of the second reflecting surface 123 and is reflected along the incident light on the second reflecting surface 123.

[0064] As Figure 4 shown, the light enters on the right side of the normal line of the first reflecting surface 122, and the light reflected by the first reflecting surface 122 enters on the left side of the normal line of the second reflecting surface 123. The second reflecting surface 123 reflects the light for the second time and changes the propagation direction of the light, so that the direction after the second reflection is directed to the surgical field area to form a spot in the surgical field area and illuminate the surgical field area.

[0065] In this embodiment, by arranging the first refracting surface and the second refracting surface to change the optical path of the light emitted by the lighting unit 121 twice, the light emitted by the lighting unit 121 cannot directly shine on the surgical field area through the first refracting surface, and the spot falls into the surgical field area through the second refraction of the second refracting surface to illuminate the surgical field area. It effectively avoids the discomfort caused by the stray light of the lighting module 120 or the glare generated by the direct light of the LED lighting unit 121 that the surgical operator may see when looking up.

[0066] In one embodiment, both the first reflecting surface 122 and the second reflecting surface 123 are made of a medium with a refractive index less than that of air, so that total reflection occurs during both reflections of the pipeline, avoiding the loss of light energy.

[0067] In one embodiment, the lighting unit 121 includes a light source and a TIR lens covering the light source.

[0068] The TIR lens, also known as the internal total reflection lens, uses the principle of total internal reflection to collect and process light. The light energy utilization rate of the TIR lens is 95.26%, and the divergence angle of the light beam is controlled within +15°, with a high utilization rate of the light emitted by the lighting unit 121.

[0069] Currently, there are two forms of total internal reflection lenses, namely the scale armor total internal reflection lens and the compound eye lens total internal reflection lens. Both can complete the collection of light and conveniently control the light beam exit angle by adjusting the curvature radius of the compound eye lens or the curvature radius of the scale armor reflection surface.

[0070] The light source and its corresponding TIR lens cooperate with each other. The light emitted by the light source forms the required light beam after being refracted or reflected by the TIR lens. Specifically, the light source can be an LED light source.

[0071] Embodiment 2

[0072] Based on Embodiment 1, the lighting module 120 is circular ring-shaped and includes: a circular ring-shaped light band, and the circular ring-shaped light band includes a plurality of lighting units 121 arranged in a circular ring.

[0073] The first reflection surface 122 and the second reflection surface 123 are respectively arranged around the circular ring-shaped light band. Among them, the first reflection surface 122 and the second reflection surface 123 are respectively located on the inner and outer sides of the circular ring-shaped light band.

[0074] Specifically, the first reflection surface 122, the circular ring-shaped light band, and the second reflection surface 123 are all ring-shaped and are sleeved in sequence. The light emitted by the circular ring-shaped light band is reflected by the first reflection surface 122 located inside the circular ring of the circular ring-shaped light band, and the light path is changed to shoot towards the outside of the circular ring-shaped light band, and then is reflected by the second reflection surface 123 located outside the circular ring of the circular ring-shaped light band, and the light path is changed to shoot towards the surgical field area.

[0075] In this embodiment, the first reflection surface 122, the circular ring-shaped light band, and the second reflection surface 123 are all ring-shaped, which is convenient for forming a circular lighting spot in the surgical field area and can provide better lighting.

[0076] In one embodiment, the plurality of lighting units 121 are circumferentially evenly distributed, and the uniform distribution of the lighting units 121 is beneficial to making the formed light spot more uniform.

[0077] Embodiment 3

[0078] Based on Embodiment 2, the incident angle of the light on the first reflection surface 122 is 45°.

[0079] Generally, the illumination module 120 irradiates along a direction perpendicular to the lamp base. According to the law of reflection, the angle of incidence is equal to the angle of emergence. After the light is reflected by the first reflecting surface 122, the optical path forms a 90° deflection, deflecting the light perpendicular to the lamp base into a direction parallel to the lamp base. By placing the first reflecting surface in the direction of the orthographic projection of the illumination module 120 and ensuring that the occlusion area just completely occludes, the effect of completely hiding the illumination mode is achieved.

[0080] It can be understood that when the illumination module 120 irradiates along a direction perpendicular to the lamp base, it does not mean that all the light rays emitted by the illumination unit 121 are perpendicular to the lamp base. Instead, it means that the overall irradiation trend of the light rays emitted by the illumination unit 121 is perpendicular to the lamp base. In fact, the light rays emitted by the illumination unit 121 may have a certain deviation angle from the vertical direction of the lamp base, but the deviation angle is small, usually not exceeding ±9°.

[0081] Embodiment 4

[0082] As Figure 4 and Figure 10 shown, on the basis of Embodiment 3, three sets of illumination modules 120 are provided, and the three sets of illumination modules 120 are sleeved.

[0083] The three sets of illumination modules 120 sleeved in a ring are beneficial to forming three sets of ring-shaped light spots, facilitating the superposition and combination of the light spots to adjust the illuminance of the illumination light spots in the surgical field area.

[0084] Furthermore, the three sets of illumination modules 120 are, from the inner circle to the outer circle, the first illumination module 1201, the second illumination module 1202, and the third illumination module 1203. The angle of incidence of the second reflecting surface 123 of the first illumination module 1201 is β1, the angle of incidence of the second reflecting surface 123 of the second illumination module 1202 is β2, and the angle of incidence of the second reflecting surface 123 of the third illumination module 1203 is β3, where β1 > β2 > β3.

[0085] Since the first illumination module 1201, the second illumination module 1202, and the third illumination module 1203 are sleeved from the inside to the outside in sequence, and the position of the light spot formed by each illumination module 120 in the surgical field area is related to the angle of incidence β of the second reflecting surface 123 of the illumination module 120. When β1 > β2 > β3, it is beneficial for the light spots formed by each illumination module 120 to be concentrated, facilitating illumination of the surgical field area.

[0086] In one embodiment, the number of illumination units 121 provided in the three sets of illumination modules 120 is equal, and the light energy of the light spots formed by each illumination module 120 in the surgical field area is equal.

[0087] Embodiment 5

[0088] As Figure 5 andFigure 6 As shown, on the basis of the fourth embodiment, the first lighting module 1201, the second lighting module 1202, and the third lighting module 1203 respectively form concentric light spots of different sizes in the surgical field area, where the light spot area of the first lighting module 1201 < the light spot area of the second lighting module 1202 < the light spot area of the third lighting module 1203;

[0089] And:

[0090] (R n +L n )cot2β n =H - h n (n = 1, 2, 3);

[0091] R n is the radius of the circular light band in the lighting module 120;

[0092] L n is the distance from the first reflecting surface 122 to the second reflecting surface 123 in the lighting module 120;

[0093] H is the distance from the lamp panel 110 to the surgical field area;

[0094] h n is the distance from the lamp panel 110 to the first reflecting surface 122.

[0095] The first lighting module 1201, the second lighting module 1202, and the third lighting module 1203 respectively form circular light spots of different sizes in the surgical field area, and the areas of the light spots formed by the first lighting module 1201, the second lighting module 1202, and the third lighting module 1203 increase in sequence. The light spots of the three lighting modules 120 are concentrically nested. By adjusting the intensity ratio of the three light spots, the size of the illuminated light spot can be adjusted.

[0096] Each lighting module 120 is set to be circular, and the light spots formed by each lighting module 120 in the surgical field area are also circular. According to the trigonometric function and the law of reflection of light, when the circular light band is set to satisfy (R n +L n )cot2β n =H - h n (n = 1, 2, 3), it can be ensured that the centers of each lighting module 120 are coaxial with the centers of the circular light spots formed by them.

[0097] Among them, R n is the radius of the circular light band in the lighting module 120. The radius of the circular light band of the first lighting module 1201 is R1, the radius of the circular light band of the second lighting module 1202 is R2, and the radius of the circular light band of the third lighting module 1203 is R3.

[0098] L n is the distance from the first reflecting surface 122 to the second reflecting surface 123 in the lighting module 120. The distance from the first reflecting surface 122 to the second reflecting surface 123 in the first lighting module 1201 is L1, the distance from the first reflecting surface 122 to the second reflecting surface 123 in the second lighting module 1202 is L2, and the distance from the first reflecting surface 122 to the second reflecting surface 123 in the third lighting module 1203 is L3. In practice, since the first reflecting surface 122 and the second reflecting surface 123 are not parallel, the distances from the first reflecting surface 122 to the second reflecting surface 123 are not equal. During design, only the light rays at the center of the lighting unit 121 need to be calculated, that is, the distance that the light rays emitted by the lighting unit 121 and perpendicular to the lamp board pass between the first reflecting surface 122 and the second reflecting surface 123 is sufficient.

[0099] H is the distance from the lamp panel 110 to the surgical field area, and this distance is a fixed value. Usually, the distance from the lamp panel 110 to the surgical field area is set to 1000 mm.

[0100] h n is the distance from the lamp panel 110 to the first reflecting surface 122. The distance from the lamp panel 110 to the first reflecting surface 122 of the first lighting module 1201 is h1, the distance from the lamp panel 110 to the first reflecting surface 122 of the second lighting module 1202 is h2, and the distance from the lamp panel 110 to the first reflecting surface 122 of the third lighting module 1203 is h3.

[0101] R n 、L n 、h n and the specific parameters of H can all be set according to actual lighting requirements.

[0102] Example Six

[0103] As Figures 7 to 9 shown, on the basis of Example Four, the spot sizes formed by a single lighting unit 121 in the surgical field area are the same, and the spot radius is r;

[0104] And:

[0105] [R n +L n -(n - 1)×a]×cot2β n = H - h n (n = 1, 2, 3);

[0106] R n is the radius of the circular light band in the lighting module 120;

[0107] L n is the distance from the first reflecting surface 122 to the second reflecting surface 123 in the lighting module 120;

[0108] H is the distance from the lamp panel 110 to the surgical field area;

[0109] h n is the distance from the lamp panel 110 to the first reflecting surface 122;

[0110] a < r < 2a.

[0111] Each single lighting unit 121 forms circular light spots of the same size in the surgical field area. The circular light spots formed by the lighting units 121 in the first lighting module 1201 are concentric in the surgical field area, and the center of the circular light spot is coaxial with the center of each lighting module 120. The centers of the circular light spots formed by the lighting units 121 in the second lighting module 1202 and the third lighting module 1203 are arranged circumferentially around the circular light spot formed by the first lighting module 1201 in the surgical field area, and the radial distances from the centers of the circular light spots formed by the lighting units 121 in the second lighting module 1202 and the third lighting module 1203 to the center of the circular light spot formed by the first lighting module 1201 in the surgical field area are different.

[0112] In the above formula, (n - 1)×a is the radial distance from the center of the circular light spot formed by the lighting unit 121 in each lighting module 120 to the center of the circular light spot formed by the first lighting module 1201 in the surgical field area. n is substituted with the number of levels of the module. The radial distance from the center of the circular light spot formed by the lighting unit 121 in the first lighting module to the center of the circular light spot formed by the first lighting module 1201 in the surgical field area is 0. The radial distance from the center of the circular light spot formed by the lighting unit 121 in the second lighting module to the center of the circular light spot formed by the first lighting module 1201 in the surgical field area is a. The radial distance from the center of the circular light spot formed by the lighting unit 121 in the third lighting module to the center of the circular light spot formed by the first lighting module 1201 in the surgical field area is 2a, where a < r < 2a, and the specific value of a can be selected according to specific lighting requirements.

[0113] In one embodiment, r = 75 mm, a = 50 mm, and the lighting light spot formed in the surgical field area is as Figure 9 shown, and this lighting light spot is formed by the superposition of the circular light spots formed by each lighting module as Figure 8 shown in the surgical field area.

[0114] It can be understood that those skilled in the art can, under the guidance of the above embodiments, combine various implementation manners in the above various embodiments to obtain technical solutions of various implementation manners.

[0115] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A surgical shadowless lamp, characterized in that, It includes a lamp panel, and at least one set of lighting modules are arranged on the lamp panel; The lighting module includes a lighting unit that emits light, a first reflecting surface arranged on the light path, and a second reflecting surface arranged on the light path of the light reflected by the first reflecting surface. The first reflecting surface completely reflects the light; Wherein, the first reflecting surface and the second reflecting surface are arranged facing each other, and the angle from the first reflecting surface to the second reflecting surface is less than 45°.

2. The surgical shadowless lamp according to claim 1, characterized in that, The lighting module is in a circular ring shape, and a circular light band is formed by arranging a plurality of the lighting units in a circular ring; The first reflecting surface and the second reflecting surface are respectively arranged around the circular light band. Among them, the first reflecting surface and the second reflecting surface are respectively located on the inner and outer sides of the circular light band.

3. The surgical shadowless lamp according to claim 2, wherein The first reflecting surface is placed on the inner side of the circular light band, and the second reflecting surface is placed on the outer side of the circular light band.

4. The surgical shadowless lamp according to claim 3, characterized in that, The incident angle of the light on the first reflecting surface is 45°.

5. The surgical shadowless lamp according to claim 3, wherein Three sets of the lighting modules are arranged in a nested manner.

6. The surgical shadowless lamp according to claim 5, wherein, The three sets of lighting modules are the first lighting module, the second lighting module, and the third lighting module in sequence from the inner circle to the outer circle. The incident angle of the second reflecting surface of the first lighting module is β1, the incident angle of the second reflecting surface of the second lighting module is β2, and the incident angle of the second reflecting surface of the third lighting module is β3. Among them, β1 > β2 > β3.

7. The surgical shadowless lamp according to claim 6, wherein, The first lighting module, the second lighting module, and the third lighting module respectively form concentric light spots of different sizes in the surgical field area. Among them, the light spot area of the first lighting module < the light spot area of the second lighting module < the light spot area of the third lighting module; And: (R n +L n ) cot 2β n = H - h n (n = 1, 2, 3); R n is the radius of the circular light band in the lighting module; L n is the distance from the first reflecting surface to the second reflecting surface in the lighting module; H is the distance from the lamp panel to the surgical field area; h n is the distance from the lamp panel to the first reflecting surface.

8. The shadowless operating lamp according to claim 6, wherein The light spots formed by a single lighting unit in the surgical field area are of the same size, and the radius of the light spot is r; And: [R n +L n -(n - 1)×a]×cot2β n = H - h n (n = 1, 2, 3); R n is the radius of the circular light band in the lighting module; L n is the distance from the first reflecting surface to the second reflecting surface in the lighting module; H is the distance from the lamp panel to the surgical field area; h n is the distance from the lamp panel to the first reflecting surface; a < r < 2a.

9. The surgical shadowless lamp according to claim 1, characterized in that, The number of lighting units arranged in the three sets of lighting modules is equal.

10. The surgical shadowless lamp according to claim 1, characterized in that, The lighting unit includes a light source and a TIR lens covering the light source.

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