WO2018165880A1

WO2018165880A1 - Light-emitting device and surgical lamp

Info

Publication number: WO2018165880A1
Application number: PCT/CN2017/076685
Authority: WO
Inventors: 王磊
Original assignee: 南京迈瑞生物医疗电子有限公司
Priority date: 2017-03-15
Filing date: 2017-03-15
Publication date: 2018-09-20
Also published as: CN109073206A; CN109073206B; EP3597993B1; EP3597993A4; CN112664909A; ES2926223T3; EP3597993A1; CN112664909B

Abstract

A light-emitting device (100), comprising: a light source (1), a light deflection element (2) and a reflective shade (3); the reflective shade (3) comprises a top end (301), a bottom end (302) which is provided with an annular opening, and a reflector body (303) which gradually expands from the top end (301) to the bottom end (302), the reflector body (303) being symmetrical about a central axis; the light source (1) is located at a top end (301) region of the reflective shade (3) and faces the bottom end (302) of the reflective shade (3), and may emit forward light and side light; the light deflection element (2) is located between the light source (1) and the reflective shade (3), and the light deflection element (2) is used for collecting the forward light and the side light, adjusting the deflection direction of the forward light and the side light such that the forward light and the side light which emerge from the light deflection element (2) are projected to an inner side of the reflector body (303) of the reflective shade (3); the reflective shade (3) then mixes and reflects a light beam, and finally light rays from different positions of the reflective shade (3) are superposed at a desired position to form a desired light spot. By using such a light-emitting device (100), a surgical lamp having no shadow effect may be made.

Description

Light-emitting device and surgical lamp

Technical field

[0001] The present invention relates to the field of illumination, and in particular to a light emitting device and a surgical light using the same.

Background technique

[0002] Surgical lamps, as special luminaires used in the operating room, need to achieve a shadowless effect in addition to the brightness requirements. Therefore, the surgical lamp is generally large in size, and the size of the lamp can reach 600-700 mm, and the multiple beams of light converge into a desired spot to illuminate the surgical field.

[0003] The commonly used surgical lamps generally adopt a technical scheme of Giraff Star, in which the LED light source is placed in a reflector or a lens to form an independent lighting unit, and a plurality of lighting units are distributed inside the lamp head and their illumination directions are directed to the operation. The area, eventually forming a surface light source with a certain direction and concentrated light to achieve a shadowless effect. In this solution, the size of the spot formed by the surgical lamp in the surgical field is adjusted, usually by changing the illumination unit illumination angle to change the light intensity distribution of the operation area, or by changing the relative output of the illumination unit illuminated by the illumination unit at different positions in the operation area. The method of intensity to change the light intensity distribution of the surgical field.

[0004] Another variant of the Gypsophila scheme is to distribute the above-mentioned plurality of illumination units composed of LED light sources and lenses to the periphery of the lamp cap, and a large reflector is placed in the middle of the lamp cap, and the light emitted by these illumination units is directly or indirectly It is directed toward the center of the lamp head and is illuminated on the reflector, which in turn reflects the light to the surgical field. In this scheme, the method of changing the spot size of the surgical region is to use two groups (or more groups) of illumination units, and the positions of the plurality of illumination units in the lamp cap are different from the illumination angles, so that the direction of the light is different after they are reflected by the reflector. Different light intensity distributions are formed in the surgical area, and the light intensity distribution of the surgical area is changed by changing the relative intensity of the output of the two sets of illumination units.

[0005] Many lighting units are required in the above solutions. On the one hand, the weight of the lamp cap, the material cost and the installation time are increased because of the large number of lighting units, and on the other hand, the illumination angle of the lighting unit is high. Therefore, the positioning and installation structure are required to be high.

technical problem

[0006] The technical problem to be solved by the present invention is to provide a technical solution different from that of a star, which does not require multiple The lighting unit can make full use of the light from the light source.

Problem solution

Technical solution

[0007] According to a first aspect, an embodiment provides a light emitting device, including:

[0008] a reflector comprising a top end, a bottom end having an annular opening, and a reflector gradually expanding from the top end to the bottom end

, the light projected to the inner side thereof is reflected and then concentrated into a spot of a predetermined size;

[0009] a light source, the light source is located at a top end region of the reflector and facing a bottom end of the reflector, the light source emitting at least forward light and lateral light;

[0010] a light deflection element, the light deflection element being located on the optical path of the forward light and the lateral light, for collecting the forward light and the lateral light, and adjusting the deflection directions of the forward light and the lateral light, so that the The forward and lateral light exiting the light deflection element is projected onto the inside of the reflector of the reflector.

[0011] According to the third aspect, an embodiment may further provide a light emitting device, including:

[0012] a reflector comprising a top end, a bottom end, and a reflector extending from the top end to the bottom end;

[0013] a light source, the light source is located at a top end region of the reflector and facing a bottom end of the reflector, the light source emitting at least lateral light;

[0014] a light deflection element, the light deflection element being located on an optical path of the lateral light for collecting lateral light; wherein the light deflection element adjusts light propagation of lateral light projected thereon The direction causes the lateral light emitted from the light deflection element to be projected onto the reflector, the reflector reflecting the lateral light projected thereon, and concentrating the lateral light emitted from the reflector into a spot of a predetermined size.

[0016] According to a second aspect, an embodiment further provides a surgical light made using the above-described illumination device.

Advantageous effects of the invention

Beneficial effect

[0017] In the embodiment of the present invention, the lateral beam emitted by the light source is collected by a shaped optical element that causes the light to deflect to different degrees, thereby changing the outgoing direction of the light beam to direct the light beam to the reflector disposed on the outer circumference. The reflector then mixes and reflects the beam, and finally superimposes light from different locations of the reflector at a desired location (eg, the surgical field) and forms the desired spot.

[0018] The surgical lamp made by using the illumination device of the invention can increase the light-emitting area of the entire surgical lamp by making the lateral dimension of the reflector larger, thereby avoiding objects under the surgical lamp (such as a doctor's head) ) The occlusion 吋 causes the umbral area to have a good shadowless effect.

Brief description of the drawing

DRAWINGS

1 is a cross-sectional view of the surgical lamp in the axial direction;

2A-2H are schematic illustrations of various embodiments of a light source;

3A-3C are schematic views of various embodiments of a light deflection element;

[0022] FIG. 4 is a schematic structural view of a polygonal line reflector in an embodiment;

[0023] FIG. 5 is a schematic structural view showing the principle of total reflection of the reflector in another embodiment;

6 is a schematic diagram of adjusting a light spot by changing a light source in an embodiment; [0024] FIG.

7 is a schematic structural view of a light-emitting device in an embodiment of adjusting a light spot by a spot adjustment assembly; [0025] FIG.

8A-8F are schematic diagrams of a spot adjustment process of the embodiment shown in FIG. 7;

9 is a schematic structural view of a light-emitting device in another embodiment of adjusting a light spot by a spot adjusting component. [0028] FIG. 10 is a schematic structural view of a light-emitting device in another embodiment of adjusting a light spot by a spot adjusting component.

11 is a schematic structural view of a light-emitting device in which a filter is added.

BEST MODE FOR CARRYING OUT THE INVENTION

[0030] The description of the preferred embodiment of the invention is entered here.

Embodiments of the invention

[0031] The present invention will be further described in detail below with reference to the accompanying drawings. Similar elements in different embodiments employ associated similar component numbers. In the following embodiments, many of the details are described in order to provide a better understanding of the application. However, those skilled in the art can easily realize that some of the features may be omitted in different situations, or may be replaced by other components, materials, and methods. In some cases, some operations related to this application are not shown or described in the specification, in order to avoid that the core part of the application is overwhelmed by excessive description, but It is not necessary for those skilled in the art to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the field.

In addition, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. In the meantime, the steps or actions in the method description can also be sequentially changed or adjusted in a manner apparent to those skilled in the art. Therefore, the various orders in the specification and the drawings are only for the purpose of describing a particular embodiment, and are not intended to be a necessary order unless otherwise indicated.

[0033] The serial numbers themselves for the components herein, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The terms "connection" and "connection" as used in this application include direct and indirect connections (connections) unless otherwise stated.

[0034] The light-emitting device disclosed in the embodiment of the present invention no longer adopts a starry scheme composed of a plurality of small illumination units, but one or more light sources share a set of optical systems, and the optical system emits light to the light source. The collection is carried out, and after reflection, it is concentrated into a desired spot. Hereinafter, an example in which a light-emitting device is applied to a surgical lamp will be described.

Please refer to FIG. 1. FIG. 1 is a cross-sectional view of the surgical lamp in the axial direction. The surgical lamp includes a lamp cap. The lamp cap further includes a light emitting device 100, a lamp cap rear cover 200 and a lamp cap front cover 300. The light emitting device 100 is mounted on the lamp cap rear cover 200. Above, the base back cover 200 and the base front cover 300 surround the receiving cavity, and the light emitting device 100 is enclosed in the receiving cavity. The illuminating device 100 comprises a light source 1, a light deflecting element 2 and a reflector 3. The reflector 3 comprises a top end 301, a bottom end 302 and a reflector 303. The reflector gradually expands from the top end to the bottom end, and the bottom end has an annular opening, and the top end can also There is a smaller annular opening, and the shape of the annular opening can be a circular ring shape or an elliptical or polygonal ring shape. In other embodiments, the tip can also be in a closed form, such as being closed into a tip or a platform. As a whole, the reflector 3 is umbrella-shaped and is fixed to the rear cover of the lamp cap. The light source 1 is located at the top end region of the reflector, and the light exit surface thereof faces the bottom end of the reflector. The light source 1 is preferably mounted on the circuit board (not shown), and the circuit board is fixed on the lamp cover, corresponding to the light source 1 Placed close to the top of the center of the surgical light, so that the heat generated by the light source can be quickly transmitted to the base back cover through a large area of heat conduction. The light deflection element 2 is located between the light source 1 and the reflector 3, and the light deflection element 2 is mounted on the lamp cover or mounted on the top end of the reflector 3 or mounted on the circuit board.

[0036] The various parts of the light-emitting device and their light processing ideas are described below. [0037] In this embodiment, the light source 1 adopts a forward illuminating light source, and the forward illuminating light source is characterized in that the light is emitted substantially in the range of 0-180 degrees, and thus the light emitted by the light source 1 includes forward light and lateral light. In other embodiments, the light source 1 may also be a light source that emits light to the surroundings. In this paper, the angle between the beam and the optical axis is defined as the divergence angle. Then, the forward light refers to the beam with the divergence angle less than or equal to a certain value. The lateral light refers to the divergence angle is greater than or equal to a certain value and less than the maximum divergence. a beam of light, for example, for a light source that emits light in the range of 180 degrees, a beam having a divergence angle of less than or equal to 40 degrees, 45 degrees, or 50 degrees is called forward light, correspondingly, greater than or equal to 40 degrees, 45 degrees. A beam of 50 degrees or less and less than 90 degrees is called lateral light. For a light source that emits light in the range of 90 degrees, a light beam having a divergence angle of less than or equal to 30 degrees or 35 degrees is referred to as forward light, and correspondingly, a light beam greater than 30 degrees or 35 degrees and less than 45 degrees is referred to as lateral light. It can be seen that regardless of the light source, the divergence angle of the lateral light is greater than the divergence angle of the forward light.

[0038] In this embodiment, the light source 1 may be a light source or a combination of multiple light sources, and the light source type includes and is not limited to LED, OLED, laser, optical fiber, fiber bundle, phosphor, light guide tube, etc. The fiber bundle, the light pipe, and the like may be collectively referred to herein as a light guide for introducing a light source external to the lamp head from the light source that can be energy to the light source position of the light-emitting device, and serving as a light source in the light-emitting device. When the light source 1 is combined with a plurality of light sources, different types of light source combinations can be used to change the spatial distribution characteristics, spectral characteristics, strength characteristics and other parameters of the entire light source to meet different clinical needs. By using multiple light source combinations, it is possible to change the degree of mixing of different light sources by controlling the size of the light-emitting area of the light source and the parameters of the reflector, thereby achieving uniform light mixing. For example, as shown in FIG. 2, in FIG. 2A, an LED light source 101 is used as the light source 1; FIG. 2B uses the high color temperature LED 102 and the low color temperature LED 103 to combine the two light sources into the light source 1, and the color temperature adjustment function of the surgical lamp is realized by adjusting their relative brightness. Figure 2C uses the OLED surface light source 104 as the light source 1; in Figure 2D, using the fiber or fiber bundle or light pipe 105, the light from the light source 106 outside the head of the surgical lamp is introduced into the light source position of the lamp head of the surgical lamp to form the light source 1; In Fig. 2E, the lens 107 is used in conjunction with the optical fiber (beam) 108 to form the light source 1, and the divergence angle of the light emitted by the optical fiber (beam) is further expanded; in Fig. 2F, the light emitted from the head end of the optical fiber (beam) further excites the phosphor 109 to form The light source 1 can realize the conversion of the light wavelength; in FIG. 2G, the different phosphors or the optical fibers (beams) of the light source are combined to form the light source 1, for example, the high color temperature phosphor and the low color temperature phosphor are used to realize the color temperature adjustment function; An example of combining different types of light sources.

[0039] For light sources with a light distribution in the range of 0° to 180°, how to collect and use as much light as possible It is important that, in the absence of the light deflection element 2, the lateral light emitted by the light source 1 is large due to the divergence angle, so that part, most or all of the lateral light can be irradiated to the inside of the reflector, but the forward direction of the light source 1 Since the light has a small divergence angle and the reflector is restricted by the longitudinal dimension, the size that cannot be produced in the longitudinal direction is too large, so that the forward light cannot be irradiated to the inside of the reflector, and the light emitted from the light source cannot be fully utilized. However, if it is considered that the reflector is disposed on the optical path of the forward light to collect the forward light, the lateral light cannot be collected because the surgical lamp is spatially constrained by the design of the reflector. To this end, in the embodiment of the present invention, a light deflecting element 2 is used to collect light in the range of 0° to 180° (i.e., a range in which the divergence angle is greater than or equal to 0° and less than 90°). The light deflection element 2 is located between the light source 1 and the reflector 3, specifically on the optical paths of the forward light and the lateral light, for collecting the forward light and the lateral light, and adjusting the deflection directions of the forward light and the lateral light. , the forward light and the lateral light emitted after the adjustment can be projected to the inside of the reflector of the reflector. In a specific embodiment, the light deflection element 2 can adjust the direction of light propagation of the forward and lateral lights by a combination of one or more of refraction, reflection, and total reflection to cause the forward direction from the light deflection element. Both the light and the lateral light travel in the direction of the reflector. In some embodiments, the direction of light propagation of the forward and lateral light emerging from the light deflecting element is adjusted to be close or uniform, as shown in FIG. In order to compress the thickness of the reflector in the longitudinal direction as much as possible, a small deflection of the lateral light is possible, and a large deflection of the forward light is performed.

[0040] In order to make full use of the lateral light emitted by the light source, the light deflection element 2 performs at most two reflections and/or total reflections on the lateral light, that is, the total reflection and/or total reflection of the lateral light by the light deflection element 2. The number of times is at most two. After the light is reflected, the energy of the light will be lost, and multiple reflections will cause cascading losses, resulting in the inefficient use of light energy. Reflecting or totally reflecting the light is limited by the manufacturing process and assembly of the optical component. The reflected or totally reflected light has a certain angle deviation from the theoretical reflection angle. The deviation of the reflection angle will affect the convergence of the reflector. The spot size or positioning is formed, and multiple reflections or total reflections further magnify the reflection angle deviation. In view of the above, the light deflection element 2 of the present application performs at least two reflections and/or total reflections of the lateral light.

[0041] To improve the rational use of forward light, the total number of reflections and/or total reflections of the forward light may also be set to at most two for the reasons described above.

The specific structure of the light deflection element 2 is exemplified in FIGS. 3A to 3C, and the light deflection elements 2 of these examples are symmetrical about their central axes, and the light source 1 emits light in a range of 180°, as shown by 90°. The direction is the optical axis (ie the center), and 0° and 180° are the edges. [0043] In the embodiment shown in FIG. 3A, the light deflection element 2 collects lateral light near the edge by refraction (for example, light having a divergence angle between 60 degrees and 90 degrees, 60° < divergence angle < 90°) ), through the total reflection to collect the forward light near the center (for example, the light with a divergence angle between 0 degrees and 60 degrees, 0 ° ≤ divergence angle ≤ 60 °). The light deflection element 2 includes a refractive portion 201 and a total reflection portion 202. The refractive portion 201 and the total reflection portion 202 are transparent medium, and the refractive portion 201 is disposed on the optical path of the lateral light for collecting lateral light, and the total reflection portion 202 is disposed. In the light path of the forward light, it is used to collect the forward light. Fig. 3A is a cross-sectional view of the light deflection element 2 along the central axis, and the entity of the light deflection element 2 is formed by rotating the pattern shown in Fig. 3A about a central axis. The refracting portion 201 has a bowl shape, and the bowl mouth is fixed upward at the rear of the lamp cap. The refracting portion 201 includes an outer surface 2011 and an inner surface 2012. The inner surface 2012 is formed into a square groove, the upper mouth is formed into a bowl, and the light source 1 is disposed at the refraction. The bowling area of the part 201. The lateral light emitted by the light source 1 is incident on the inner surface 2012, and the lateral light is refracted and exits from the outer surface 2011. The outer surface 2011 is a convex surface, which is referred to as a first convex surface for convenience of description. The curvature of the first convex surface 2011 varies with the divergence angle of the lateral light such that the direction of light propagation is close or uniform after the lateral light is refracted by the first convex surface. The total reflection portion 202 is located below the refracting portion 201, specifically on the optical path of the forward light. The total reflection portion 202 includes a light incident surface 2021, a total reflection surface 2022, and a light exit surface 2023. The incident surface 2021 and the light exit surface 2023 may be planes, and the total reflection surface 2022 is a convex surface, which is referred to herein as a second convex surface, and the second convex surface is defined by The center axis extends obliquely downwards. The forward light emitted by the light source 1 is incident from the incident surface 2021 and then irradiated to the second convex surface 2022. The curvature of the second convex surface 2022 changes with the divergence angle of the forward light, so that the forward light is incident on the inner side of the second convex surface. The angle is greater than or equal to the critical angle, so the forward light is totally reflected on the second convex surface 2022, and the direction of light propagation is close or uniform after the forward light is reflected by the second convex surface, and the forward light from the total reflection is emitted from the light exit surface. 2023 shot. In the embodiment shown in Fig. 3A, after the lateral light and the forward light pass through the light deflection element 2, the directions of propagation of the respective rays are substantially parallel, and are irradiated to the reflector 3 in the horizontal direction.

In a preferred embodiment, the refractive portion 201 and the total reflection portion 202 of the light deflection element 2 may be integrated together and integrally formed in a mold using a mold.

[0045] In the embodiment shown in FIG. 3B, the light deflection element 2 collects light of all angles by two total reflections. The light deflection element is a transparent medium, and includes a third convex surface 203, a fourth convex surface 204, and a light exit surface 205. The third convex surface 203 and the fourth convex surface 204 face each other, and the third convex surface 203 extends obliquely downward from the plane of the light source. The light path of the lateral light is used to collect the lateral light, and the curvature of the third convex surface 203 varies with the incident angle of the lateral light, so that the lateral light is totally reflected on the inner side of the third convex surface 203, and is reflected to the first Four convex surface 204 inside. The fourth convex surface 204 extends obliquely downward from the central axis, and is located on the optical path of the forward light for collecting the total reflected light of the forward light and the lateral light, and the curvature of the fourth convex surface is along with the forward light and the lateral light. The incident angle of the total reflected light is varied such that the incident angle of the total reflected light of the forward and lateral light on the inner side of the fourth convex surface is greater than or equal to the critical angle, and the total reflection of the forward and lateral light is made. The direction of light propagation is close or uniform after the light is reflected by the fourth convex surface. 3B is a cross-sectional view of the light deflection element 2 along the central axis, the light exit surface 205 is a plane connecting the edges of the third convex surface 203 and the fourth convex surface 204, and the entity of the light deflection element 2 is wound by the pattern shown in FIG. 3B. The central axis is rotated. In the embodiment shown in Fig. 3B, after the lateral light and the forward light pass through the light deflection element 2, the directions of propagation of the respective rays are substantially parallel, and are irradiated to the reflector 3 in the horizontal direction.

In the embodiment shown in FIG. 3C, the light deflection element 2 refracts to collect edge rays by a single element, and collects light near the center by reflection of the other element. The deflection element 2 includes a refractive portion 206 and a reflecting portion 2 07. The refracting portion 206 is a transparent medium, and the refracting portion 206 is disposed on the optical path of the lateral light for collecting the lateral light. The refracting portion 206 is composed of a light incident surface 2061, a fifth convex surface 2062 as a light exit surface, and a top surface 2063. The top surface 2063 is fixed at the rear of the lamp cap, and the light incident surface 2061 can be formed into a plane on the side of the refracting portion 206. The curvature of the fifth convex surface 2062 varies with the divergence angle of the lateral light so that the lateral light passes through the fifth convex surface. The direction of light propagation after refraction is close or uniform. The reflecting portion 207 is a concave mirror located below the refracting portion 206, and the concave mirror extends obliquely downward from the central axis and is symmetrical with respect to the central axis. Fig. 3C is a cross-sectional view of the light deflection element 2 along the central axis, and the entity of the light deflection element 2 is formed by rotating the pattern shown in Fig. 3C around the central axis. In the embodiment shown in Fig. 3C, after the lateral light and the forward light pass through the light deflection element 2, the directions of propagation of the respective rays are substantially parallel, and are irradiated to the reflector 3 in the horizontal direction. In the actual fabrication, the refracting portion 206 and the reflecting portion 207 may employ discrete components, and the refracting portion 206 is fixed to the rear of the lamp cap. The reflecting portion 207 may be fixed to a support frame, and the support frame is fixed inside the lamp cap.

3A-3C described above are merely exemplary embodiments of the light deflection element 2. Based on the transmission (especially refraction), reflection or total reflection treatment of the lateral and forward light by the light deflection element 2, other shapes of the light deflection element 2 can also be designed to adjust the light propagation of the lateral light and the forward light. direction.

[0048] In an embodiment, on the basis of the light deflection element 2 of FIG. 3A, an optical element may be added, which is located on the optical path between the light deflection element ₂ and the reflector. The optical element is used for further shaping of the lateral and forward light that are adjusted via the light deflection element 2, for example, for further refraction such that the direction of light propagation of the lateral and forward light is close or uniform. [0049] In one embodiment, the light deflection element 2 comprises a refractive portion made of a transparent material and comprising a first curved surface on the optical path of the lateral light, the curvature of the first curved surface being dependent on the lateral light The divergence angle changes. The first curved surface refracts the lateral light projected thereon, and the refracted lateral light emerges from the light deflecting element onto the reflector of the reflector.

In one embodiment, the light deflection element 2 includes a first non-transmissive portion that refers to incident light that is not transmitted through, but does not limit whether it is transparent. For example, the first non-transmissive portion may be a total reflection portion made of a transparent material, or a non-transparent reflection portion coated with a reflective coating. The first non-transmissive portion includes a second curved surface on the optical path of the lateral light, the curvature of the second curved surface varying with the incident angle of the lateral light. When the first non-transmissive portion is the total reflection portion 吋, the second curved surface totally reflects the lateral light projected thereon, and the totally reflected lateral light is emitted from the light deflection element to the reflector of the reflector. When the first non-transmissive portion is the reflecting portion, the second curved surface reflects the lateral light projected thereon, and the reflected lateral light is emitted from the light deflecting element to the reflector of the reflector.

[0051] In an embodiment, the light deflection element 2 may further include a second non-transmissive portion similar to the first non-transmissive portion, may be a total reflection portion made of a transparent material, or coated with a reflective coating Non-transparent reflector. The second non-transmissive portion includes a third curved surface on the optical path of the lateral light, the curvature of the third curved surface varying with the incident angle of the lateral light. When the second non-transmissive portion is a total reflection portion 吋, the third curved surface totally reflects the lateral light projected thereon, and the total reflected lateral light is projected onto the first non-transmissive portion, and the first non-transmissive portion The total reflected light of the lateral light is subjected to secondary total reflection; in this case, the lateral light after the second total reflection is projected onto the reflector. When the second non-transmissive portion is the reflecting portion 吋, the third curved surface reflects the lateral light projected thereon, and the reflected lateral light is projected onto the first non-transmissive portion, and the first non-transmissive portion is opposite to the side Secondary reflection to the reflected light of the light; in this case, the secondary light after the secondary reflection is projected onto the reflector

[0052] In the above embodiment, after the light deflection element 2 refracts, reflects, and/or totally reflects the lateral light, the light propagation direction of the lateral light can be adjusted to be projected onto the reflector, for example, for the light. The light source on the axis, the direction of light propagation of the lateral light can be adjusted to be approximately parallel to different locations on the reflector. In the above embodiment, the first curved surface may be, for example, the first convex surface or the fourth convex surface in FIGS. 3A-3C, and the second curved surface may be, for example, the total convex third convex surface and the total reflection type in FIGS. 3A-3C. a four-convex or reflective concave mirror, the third curved surface may be, for example, a total reflection second convex or composite curved surface in FIGS. 3A-3C; or first The surface, the second surface, and the third surface can be a composite surface with a bump fit.

[0053] In one specific example, as shown in FIG. 1, the reflector 3 may be constituted by a mirror using a reflection principle, and the light irradiated on the mirror is reflected, superimposed, and then concentrated in the surgical field 5. In order to reduce the height of the reflector and make the lamp head look lighter and more beautiful, the cross section of the reflector can be similar to a broken line. Referring to Figure 1, the cross section of the mirror along the central axis is a line shape. As shown in Fig. 4, each of the bends on the reflector constitutes an annular reflection band 304, and the radius of the reflection band is stepwise increased from the top end to the bottom end.

[0054] The reflection band may be enclosed by a plurality of planes, referred to herein as a reflection band scale, the plane may be a trapezoidal plane, a triangular plane, etc., as shown in FIG. 4, the trapezoidal plane 305 is connected end to end to form a ring shape. Reflective strip, this structure makes the cross section of the reflective strip in the radial direction polygonal.

[0055] In another embodiment, as shown in FIG. 5, the reflector may also be constructed of a total reflection transparent element 6 that employs the principle of total reflection. The light is transmitted through its first surface into its interior and reaches the reflecting surface. If its incident angle is greater than the total reflection angle, it emits total reflection. The reflected light is refracted through the lower surface and is emitted and superimposed and concentrated in the surgical field 5. The cross section of the transparent member 6 in Fig. 5 can also be in the form of a broken line similar to the figure to reduce the weight and the height.

[0056] In general, the production process of the reflector determines that the reflective surface of the reflector is relatively susceptible to environmental, wiping and other factors; therefore, the surgical lamp using the reflector also includes a lamp cover and a light-transmitting cover. The front cover and other components, the reflector is protected between the two. The transparent component in the total reflection scheme is generally processed by injection molding or molding process and does not require a reflective film layer. The surface has good weather resistance and scratch resistance, so it can be directly presented to the front cover without the lamp cover and/or the lamp cover. user. Therefore, the use of this total reflection scheme can reduce the surgical light components and make the surgical light more aesthetically pleasing, more design and high-grade.

[0057] When the light-emitting device is operated, the light 4 emitted by the light source 1 is collected by the light-deflecting element 2, and is deflected by the transmission, or reflection or total reflection, and the light is deflected by the large angle to be close to the horizontal direction. Shoot towards the periphery of the lamp head. The light that is directed toward the periphery is then collected by the reflector 3 and reflected to the surgical field 5, and the reflected light 4 is superimposed on each other in the surgical field 5, eventually forming a surgical light having a certain head area and a good shadowless effect.

[0058] This embodiment can effectively utilize various angles of the light source by the cooperation of the light deflection element and the reflector. Light, after installing the surgical light, you can change the size of the spot by changing the distance from the surgical light to the surgical area.

[0059] Since the geometry of the reflector in the solution is much larger than the size of the combined light source, for example, when the surgical lamp uses only one large reflector, the diameter of the large reflector is generally 400 mm-750 mm, LED light source, fiber, fiber. The beam size is generally between 0.01mm and 20mm, so the combined light source can be regarded as an approximate small light source with respect to the reflector. The sub-light source of the small light source is reflected by the reflector to form a superimposed diffuse spot in the surgical field, so The large reflector in this solution is very advantageous for uniform mixing of the combined light source. Moreover, by further scaling the reflector, the uniformity of the mixed light is further enhanced, so that the light emitted by all the different types of light sources can be uniformly irradiated to the surgical area after being reflected, mixed and superimposed by the reflector. Non-uniformity in spectral spatial distribution in the spot of the surgical field can be avoided or reduced.

[0060] In the same way, when the light source has multiple turns, since the light of different light sources is first mixed at the reflector inside the lamp head and then reflected to the operation area, the light is emitted through a lighting unit, so when There is an object such as a doctor's head, arms, hands, etc. between the lamp cap and the surgical field, and no visible color streaks appear in the surgical field.

[0061] Generally, the distance from the surgical lamp to the surgical field during the operation is adjusted according to the height of the physician, but during the operation of the surgical lamp, different surgical procedures and types may require different surgical fields. This time, you need to adjust the spot size of the surgical light. In the case of multiple light sources, the spot size can be varied by adjusting the illumination of the different sources.

[0062] As shown in FIG. 1, the light source 1 is located at a central position of the surgical lamp, that is, the optical axis of the light source 1 coincides with the central axis of the surgical lamp, and the light 4 is collected by the light deflection element 2, deflected, and reflected by the reflector, and then concentrated. The spot is located on the central axis of the surgical light. In this embodiment, a multi-light source scheme is adopted, and a plurality of light sources may be arranged in a square matrix 歹|J, or may be arranged in a plurality of concentric circles. When it is necessary to change the spot size, a peripheral light source of the central light source may be used, or a combined light source of the central light source and the peripheral light source may be used. When the peripheral or combined light source is activated, the light is collected by the reflector and reflected to the surgical field. Since the optical axis of the light source deviates from the central axis, the xenon light cannot be completely concentrated by the reflector, thus forming a large spot in the surgical field. As shown in FIG. 6, the light emitted from the off-center peripheral light source 7 is deflected by the light deflection element 2 to generate light in different directions, which are no longer horizontal and have a large off angle with respect to the light of FIG. Light is reflected After reflection of the cover 3, divergent rays 8 having different illumination directions and positions are produced, and finally a large area illumination spot is formed in the surgical field 5, and the illumination spot is offset from the optical axis of the light source. Therefore, with the surgical lamp of the embodiment of the present invention, if it is necessary to adjust the size of the illumination spot of the surgical region to adapt to the surgical flaw of different incision sizes, the illumination area of the light source combination can be adjusted; when a small spot is required, only the center is used. The light source emits light; when a large spot is required, the intensity away from the central light source can be increased. In this way, the adjustment of the spot size can be achieved quickly and quietly, which is beneficial to the user's clinical experience.

[0063] The spot size can be adjusted by means of a spot adjustment assembly, and an example of a spot adjustment assembly is shown in Figs. 7-9. As shown in FIG. 7, the spot adjusting assembly includes a first columnar cylinder 9 and a second columnar cylinder 10. The cylindrical cylinder may be a cylindrical cylinder or a prismatic cylinder, and the first cylindrical cylinder 9 is nested inside the second cylindrical cylinder 10, A columnar cylinder 9 and a second columnar cylinder 10 surround the outer side of the light deflection element 2, and are disposed on the optical path between the light deflection element 2 and the reflector 3, and have a space between the first columnar cylinder 9 and the second columnar cylinder 10 The intervals are formed to form an air gap, and when the form of at least one of the first columnar cylinder and the second columnar cylinder changes, the shape of the air gap is changed, and the spot size is adjusted by changing the shape of the air gap. The shapes of the first cylindrical barrel and the second cylindrical barrel referred to herein include shapes and states, and the state includes positional changes. The morphological changes of the first cylindrical barrel and the second cylindrical barrel can be adjusted by an adjusting device, which will be described in detail below; the morphological changes of the first cylindrical barrel and the second cylindrical barrel can also pass through the first cylindrical barrel and the second cylindrical barrel itself. Structural or material characteristics to achieve morphological changes. For example, the outer surface of the first cylindrical barrel and the inner surface of the second cylindrical barrel may be deformed by contraction and/or convexity, thereby changing the shape of the air gap between the first cylindrical barrel and the second cylindrical barrel.

Referring to FIG. 8A, the outer surface of the first columnar cylinder 9 has a first uneven surface structure 9a, and the inner surface of the second cylindrical cylinder 10 has a second uneven surface structure 10a, a first concave-convex surface structure and a second surface. The concave-convex structure may be directly formed on the outer surface of the first cylindrical cylinder and the inner surface of the second cylindrical cylinder, respectively, or a concave-convex structure may be attached on the outer surface of the first cylindrical cylinder and the inner surface of the second cylindrical cylinder. . There is an air gap 12 between the first uneven surface structure and the second uneven surface structure, and the first cylindrical barrel 9 and the second cylindrical barrel 10 are relatively movable, and the shape of the air gap 12 is changed by movement.

[0065] In this embodiment, the first uneven surface structure 9a is a first wave surface structure, and the second uneven surface structure 10a is a second wave surface structure. In other embodiments, the first uneven surface structure and the second uneven surface The structure may also be a pit or bump structure or a trench or rib structure. The first wave surface structure and the second wave surface structure fluctuate in the circumferential direction, and the first columnar cylinder and the second columnar cylinder are controllable in the circumferential direction by the adjusting device For the movement, thereby changing the shape of the air gap 12, the adjustment principle is as follows:

[0066] The light source is placed at the center, and a certain interval of air gap is formed between the two cylinder waves, and the two waves are similar in shape. As shown in FIG. 8A, a horizontal cross-sectional view of the relative positions of the two cylinders in the small spot state, the peak point of the first columnar cylinder 9 corresponds to the valley point of the second columnar cylinder 10 of the outer ring, the first columnar cylinder 9 and the An approximately parallel air gap 12 is formed between the two cylindrical cylinders 10 as shown in Fig. 8D. Figure 8D shows the direction of the light in the horizontal section of the small spot. The light passes through the parallel air gap 12, and the angle 13 between the two edges of the air gap 12 is zero, which corresponds to the light passing through a flat glass, so that the light 14 passes through the two cylinders. Its exit direction does not change, it deviates from a small displacement but remains parallel to the incident direction; thus the light remains substantially in its original state after passing through the cylinder. After the first columnar cylinder 9 is rotated, the peak point of the first columnar cylinder 9 and the valley point of the outer circumference second columnar cylinder 10 are offset by a certain distance, as shown in Fig. 8B, the first columnar cylinder 9 and the second cylindrical cylinder 10 are A wedge-shaped air gap 12 having unequal sizes is formed. As shown in FIG. 8E, the angle between the two boundaries of the air gap 12 is not zero, which corresponds to the air gap 12 being gradually changed to an air convex lens, and the refractive index of the cylindrical material is higher than that of the air. Since the air convex lens has a diverging effect, the light is diverged outward through the wedge-shaped air gap 12, so that the spot size becomes large. When the angle of rotation of the first cylindrical cylinder is small, the light passes through the gap 12吋, and the wedge angle 15 of a part of the air gap is small, and the light 16 is deflected by a small angle; the wedge angle 17 of one air gap is larger. Through the light 18, a large angle of deflection occurs; therefore, after the light passes through the first and second columnar cylinders, the deflection in the light is small, and the deflection is large, and the light reflected by the reflector is off the central axis. Closer, some deviate farther, and finally these rays are superimposed and combined to form a light field with a certain light intensity distribution; when the light is deviated from the nearer light, the light intensity is more concentrated on the optical axis, and the user will observe and feel A small spot; when the light is far away from the far side, the light intensity increases around, and the user will observe a larger spot. Therefore, as the first columnar cylinder rotates, the spot gradually becomes smaller from small to large. The first columnar cylinder 9 continues to be rotated, and the peak point of the first columnar cylinder 9 corresponds to the peak point of the second columnar cylinder 10 of the outer ring, and the valley points correspond to the valley points, and FIG. 8C shows the two cylinders in the maximum spot state. In a horizontal cross-sectional view of the relative position, a completely wedge-shaped air gap 12 is formed between the first cylindrical barrel 9 and the second cylindrical barrel 10. Figure 8F shows the light path of the largest spot, the light passing through the wedge-shaped air gap 12, and all air gaps have a maximum wedge angle 19, which is the maximum deflection angle, so that it is reflected by the reflector to form a maximum spot.

[0067] It can be seen that when the air gap is in a parallel state, the light does not change the angle through the two cylinders to the reflector, and is reflected by the reflector to form a small spot in the surgical region. When you need to turn up the spot, rotate one of the cylinders The shape of the air gap is changed to form a wedge-shaped air, and the light is deflected left and right through the two cylinders. After being reflected by the reflector, the divergence angle of the light is further increased, and a large spot is formed in the surgical region.

In another embodiment, as shown in FIG. 9, the first wave face structure and the second wave face structure are axially oscillated, and the first columnar cylinder 21 and the second columnar cylinder 22 are relatively movable in the axial direction. When the first columnar cylinder 21 and the second columnar cylinder 22 move relative to each other in the axial direction, the corresponding positions of the peak point and the valley point of the first wave surface structure and the second wave surface structure are changed, thereby changing the wedge angle of the air gap, It can change the spot size.

[0069] FIG. 10 is another embodiment of the male spot adjusting assembly. As shown in FIG. 10, the spot adjusting assembly includes a first light transmitting plate 24 and a second light transmitting plate 25, and the first light transmitting plate 24 and the second transparent plate The light plates 25 are disposed facing each other, for example, the first light transmitting plate 24 and the second light transmitting plate 25 are disposed in parallel with each other, and the first light transmitting plate 24 and the second light transmitting plate 25 are located on the optical path after the light is reflected by the reflector. The first light-transmissive plate 24 and the second light-transmissive plate 25 are relatively movable, and the first light-transmissive plate 24 has a third concave-convex surface structure toward the surface of the second light-transmitting plate, and the second transparent plate is oriented toward the first through The surface of the light plate has a fourth uneven surface structure, and an air gap 26 is formed between the third uneven surface structure and the fourth uneven surface structure. Based on the same principle as that of the third embodiment, when the relative position 吋 of the first light-transmitting plate 24 and the second light-transmitting plate 25 is adjusted by the adjusting device, the shape of the air gap 26 can be changed, based on the same principle as in the third embodiment, thereby The spot size can be changed.

As shown in FIG. 11, in the above embodiment, a filter 23 may be added between the light source 1 and the light deflection element 2 to filter or reduce unnecessary wavelength energy to modulate the spectrum of the light source. For example, adding an infrared cut filter, reducing near-infrared light, improving the cold light performance of the surgical light; for example, increasing the filter modulated in the visible light band, improving the color temperature or color rendering index of the light source; for example, increasing the blue portion cut filter The light sheet improves the blue light characteristics of the white LED light source, reduces the blue light hazard of the surgical light, and the like. The solution can also directly filter the optical film on the surface of the light deflection element to filter or reduce the unwanted wavelength energy.

[0071] In some embodiments, the base of the surgical lamp includes a plurality of light emitting modules, each of the light emitting modules includes one of the light emitting devices, and the plurality of light emitting modules may be separately mounted or integrated and tilted at a predetermined angle so that Each of the light-emitting devices provided has a predetermined angle of inclination and has its central axis intersected at one point. In this case, the light from the plurality of light sources can be reflected by the respective reflectors, and the light can be concentrated on one spot.

[0072]

The present invention has been described above with reference to specific examples, which are merely used to help the understanding of the invention and are not intended to limit the invention. For those of ordinary skill in the art, in accordance with the teachings of the present invention, The body embodiment is varied.

Claims

Claim

A light emitting device, comprising:

a reflector comprising a top end, a bottom end having an annular opening, and a reflector gradually expanding from the top end to the bottom end, wherein the light projected to the inner side thereof is reflected and then concentrated into a spot of a predetermined size; the light source, the light source is located in the reflector a top end and facing the bottom end of the reflector, the light source emitting at least forward light and lateral light;

a light deflection element, the light deflection element being located between the light source and the reflector, the light deflection element being located on the optical path of the forward light and the lateral light for collecting the forward light and the lateral light, and adjusting the forward light And the direction of light propagation of the lateral light, the forward light and the lateral light emitted from the light deflection element are projected to the inside of the reflector of the reflector.

The light-emitting device according to claim 1, wherein the light deflection element adjusts a light propagation direction of the forward light and the lateral light by a combination of one or more of refraction, reflection, and total reflection, The direction of light propagation of the forward and lateral light emerging from the light deflecting element is close or uniform; wherein the light deflecting element performs at most two reflections and/or total reflections of the lateral light.

The light-emitting device according to claim 2, wherein the light deflection element includes a refracting portion and a total reflection portion, the refracting portion and the total reflection portion are transparent medium, and the refracting portion is disposed on an optical path of the lateral light. For collecting lateral light, the refracting portion includes a first convex surface for emitting light, and the curvature of the first convex surface changes with a divergence angle of the lateral light, so that the lateral light is refracted by the first convex surface and the light propagation direction Close or uniform; the total reflection portion includes a second convex surface disposed on the optical path of the forward light for collecting forward light, and the curvature of the second convex surface is related to the divergence angle of the forward light The change is such that the incident angle of the forward light on the inner side of the second convex surface is greater than or equal to the critical angle, and the direction of light propagation of the forward light after being reflected by the second convex surface is close or uniform.

The light-emitting device according to claim 3, wherein the refracting portion and the total reflection portion are integrated.

The illuminating device according to claim 3, wherein the refracting portion has a bowl shape, the bowl portion of the refracting portion faces upward, and the light source is disposed at a bowl opening portion of the refracting portion, and the total reflection portion The second convex surface extends obliquely downward from the central axis.

[Claim 6] The light-emitting device according to claim 2, wherein the light deflection element is a transparent medium, the light deflection element includes a third convex surface and a fourth convex surface, and the third convex surface is located laterally The light path of the light is used to collect the lateral light, and the curvature of the third convex surface changes with the incident angle of the lateral light, so that the lateral light is totally reflected on the inner side of the third convex surface and is reflected to the fourth convex surface. The fourth convex surface is located on the optical path of the forward light for collecting the total reflected light of the forward light and the lateral light, and the curvature of the fourth convex surface is accompanied by the total reflected light of the forward light and the lateral light. The incident angle is varied such that the incident angle of the total reflected light of the forward light and the lateral light on the inner side of the fourth convex surface is greater than or equal to the critical angle, and the total reflected light of the forward light and the lateral light passes through the fourth convex surface The direction of light propagation after reflection is close or uniform.

[Claim 7] The light-emitting device according to claim 2, wherein the light deflection element includes a refracting portion and a reflecting portion, the refracting portion is a transparent medium, and the refracting portion is disposed on an optical path of the lateral light. For collecting lateral light, the refracting portion includes a fifth convex surface for emitting light, and the curvature of the fifth convex surface changes with a divergence angle of the lateral light, so that the lateral light is refracted by the fifth convex surface and the light propagation direction Close or consistent; the reflecting portion is a concave mirror extending obliquely downward from the central axis.

[Claim 8] A light-emitting device, comprising:

a reflector comprising a top end, a bottom end and a reflector extending from the top end to the bottom end; a light source, the light source being located at a top end of the reflector and facing a bottom end of the reflector, the light source emitting at least lateral light;

a light deflection element, the light deflection element being located on the optical path of the lateral light for collecting lateral light;

Wherein the light deflection element adjusts a light propagation direction of the lateral light projected thereon, and the lateral light emitted from the light deflection element is projected onto the reflector, and the reflector reflects the lateral light projected thereon The lateral light emitted from the reflector is concentrated into a spot of a predetermined size.

[Claim 9] The light-emitting device according to claim 8, wherein the light deflection element adjusts a light propagation direction of the lateral light by one or more of refraction, reflection, and total reflection, wherein The light deflection element performs at most two reflections and/or total reflections on the lateral light. The light-emitting device according to claim 8, wherein the light deflection element includes a refractive portion, the refractive portion includes a first curved surface on an optical path of the lateral light, and a curvature of the first curved surface follows The divergence angle of the lateral light changes; the first curved surface refracts the lateral light projected thereon, and the refracted lateral light is emitted from the light deflection element onto the reflector of the reflector.

The light-emitting device according to claim 8, wherein the light deflection element includes a first non-transmissive portion, and the first non-transmissive portion includes a sixth curved surface on an optical path of the lateral light, The curvature of the sixth curved surface changes with the incident angle of the lateral light; the sixth curved surface totally reflects or reflects the lateral light projected thereon, and the total reflected or reflected lateral light is emitted from the light deflecting element to Reflector on the reflector.

The light-emitting device according to claim 11, wherein the light deflection element further includes a second non-transmissive portion, the second non-transmissive portion including a seventh curved surface on the optical path of the lateral light, The curvature of the seventh curved surface changes with the incident angle of the lateral light; the seventh curved surface totally reflects or reflects the lateral light projected thereon, and the total reflected or reflected lateral light is projected onto the first surface A non-transmissive portion is further totally reflected or reflected by the first non-transmissive portion.

A light-emitting device according to any one of claims 8 to 12, wherein the lateral light emitted from the light deflecting element has a near or uniform light propagation direction.

The illuminating device according to any one of claims 8 to 12, wherein the light source further emits forward light, and the light deflecting element is further located on the optical path of the forward light for collecting forward light The light deflection element adjusts a light propagation direction of the forward light projected thereon to cause forward light emitted from the light deflection element to be projected onto the reflector, the reflector reflecting the forward light projected thereon, The forward light and the lateral light emitted from the reflector are collectively condensed into a spot of a predetermined size; wherein the direction of light propagation of the forward light and the lateral light emitted from the light deflecting element is close or uniform.

The light-emitting device according to claim 1 or 14, wherein the light-deflecting element further comprises adjusting a light propagation direction of the forward light by one or more of refraction, reflection, and total reflection, wherein The light deflection element performs at most two reflections on the forward light and/or Total reflection.

The light-emitting device according to claim 14, wherein the light deflection element further comprises a total reflection portion, the total reflection portion includes a second curved surface on an optical path of the forward light, the second curved surface The curvature varies with the angle of incidence of the forward light; the second curved surface totally reflects the forward light projected thereon, and the total reflected forward light is projected onto the reflector of the reflector; and/or

The light deflection element further includes a reflection portion, the reflection portion includes a fifth curved surface on the optical path of the forward light; the fifth curved surface reflects the forward light projected thereon, and the reflected front Projecting light onto the reflector of the reflector.

The illuminating device according to claim 1 or 8, wherein the reflector is a mirror or a total reflection transparent element, and the cross section of the reflector along the central axis is a fold line shape, and each bend on the reflector constitutes a An annular reflection band whose radius increases stepwise from the top end to the bottom end.

The light-emitting device according to claim 17, wherein the reflection band is surrounded by a plurality of planes.

The illuminating device according to claim 1 or 8, wherein one or more of the light sources are disposed on the central axis or distributed near the central axis.

The illuminating device according to claim 19, wherein the light source has a plurality of cymbals, the plurality of light sources comprising a central light source disposed on the central axis, and a peripheral light source disposed around the central light source; The light forms a first spot, and the light emitted by the peripheral light source forms a second spot; the center of the first spot is located on the central axis, and the second spot is eccentrically disposed with respect to the central axis.

The light emitting device according to claim 19, wherein the light source has a plurality of turns: the plurality of light sources comprise one or more selected from the group consisting of an LED light source, an OLED light source, a laser light source, a fluorescent light source, and a light guide. And/or, the plurality of light sources include a first light source that emits a first color temperature light and a second light source that emits a second color temperature light.

The light-emitting device according to any one of claims 1 to 7 and 8 to 12, further comprising a first columnar cylinder and a second columnar cylinder that are light transmissive, the first columnar cylinder being nested in the second columnar shape Inside the cylinder, the first columnar cylinder and the second columnar cylinder are disposed on the optical path between the light deflection element and the reflector, and the first columnar cylinder and the second columnar cylinder are spaced apart to form an air gap, when the first columnar shape The shape of at least one of the cylinder and the second cylindrical cylinder changes, and the shape of the air gap is changed.

The illuminating device according to claim 22, wherein the outer surface of the first cylindrical barrel has a first concave-convex surface structure, and the inner surface of the second cylindrical cylinder has a second concave-convex surface structure, the first concave-convex surface structure and There is an air gap between the second uneven surface structures, and the first cylindrical barrel and the second cylindrical barrel are relatively movable.

The light-emitting device according to claim 23, wherein the first uneven surface structure is a first wave surface structure, and the second uneven surface structure is a second wave surface structure.

The illuminating device according to claim 24, wherein the first wave surface structure and the second wave surface structure fluctuate in the axial direction, and the first columnar cylinder and the second columnar cylinder are relatively movable in the axial direction; or A wave face structure and a second wave face structure fluctuate in the circumferential direction, and the first columnar cylinder and the second columnar cylinder are relatively movable in the circumferential direction.

The illuminating device according to any one of claims 1 to 7 and 8 to 12, further comprising a first light transmissive plate and a second light transmissive plate, the first light transmissive plate and the second light transmissive plate The first light-transmissive plate and the second light-transmissive plate are relatively movable, and the first light-transmissive plate has a third concave-convex surface structure toward the surface of the second light-transmitting plate, facing the light path disposed and reflected by the reflector. The second light-transmitting plate has a fourth concave-convex surface structure facing the surface of the first light-transmitting plate, and an air gap is formed between the third uneven surface structure and the fourth uneven surface structure.

A surgical lamp, comprising a lamp cap, characterized in that the lamp cap comprises the light-emitting device according to any one of claims 1 to 26.

A surgical light according to claim 27, wherein said base further comprises a base back cover, and said light emitting means is fixed to the base back cover.

A surgical light according to claim 28, wherein said base further comprises a transparent base front cover, the base back cover and the base front cover enclosing the receiving chamber, and said lighting means is mounted in the receiving chamber.

A surgical light according to any one of claims 27 to 29, wherein said light emitting device There are a plurality of illuminating devices having a predetermined angle of inclination such that their central axes intersect at -