WO2018165880A1 - Dispositif émetteur de lumière et lampe chirurgicale - Google Patents

Dispositif émetteur de lumière et lampe chirurgicale Download PDF

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Publication number
WO2018165880A1
WO2018165880A1 PCT/CN2017/076685 CN2017076685W WO2018165880A1 WO 2018165880 A1 WO2018165880 A1 WO 2018165880A1 CN 2017076685 W CN2017076685 W CN 2017076685W WO 2018165880 A1 WO2018165880 A1 WO 2018165880A1
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WO
WIPO (PCT)
Prior art keywords
light
lateral
reflector
deflection element
convex surface
Prior art date
Application number
PCT/CN2017/076685
Other languages
English (en)
Chinese (zh)
Inventor
王磊
Original Assignee
南京迈瑞生物医疗电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南京迈瑞生物医疗电子有限公司 filed Critical 南京迈瑞生物医疗电子有限公司
Priority to ES17900462T priority Critical patent/ES2926223T3/es
Priority to CN201780024468.6A priority patent/CN109073206B/zh
Priority to EP17900462.7A priority patent/EP3597993B1/fr
Priority to CN202011573608.5A priority patent/CN112664909B/zh
Priority to PCT/CN2017/076685 priority patent/WO2018165880A1/fr
Publication of WO2018165880A1 publication Critical patent/WO2018165880A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/205—Lighting for medical use for operating theatres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the field of illumination, and in particular to a light emitting device and a surgical light using the same.
  • 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.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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.
  • an embodiment provides a light emitting device, including:
  • 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
  • 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;
  • a light deflection element 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.
  • an embodiment may further provide a light emitting device, including:
  • 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 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;
  • 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.
  • an embodiment further provides a surgical light made using the above-described illumination device.
  • 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.
  • 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 ⁇ causes the umbral area to have a good shadowless effect.
  • 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
  • FIG. 4 is a schematic structural view of a polygonal line reflector in an embodiment
  • FIG. 5 is a schematic structural view showing the principle of total reflection of the reflector in another embodiment
  • FIG. 6 is a schematic diagram of adjusting a light spot by changing a light source in an embodiment
  • 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
  • FIG. 8A-8F are schematic diagrams of a spot adjustment process of the embodiment shown in FIG. 7;
  • FIG. 9 is a schematic structural view of a light-emitting device in another embodiment of adjusting a light spot by a spot adjusting component.
  • 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.
  • FIG. 11 is a schematic structural view of a light-emitting device in which a filter is added.
  • connection and “connection” as used in this application include direct and indirect connections (connections) unless otherwise stated.
  • 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.
  • a light-emitting device is applied to a surgical lamp will be described.
  • 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.
  • 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.
  • the tip can also be in a closed form, such as being closed into a tip or a platform.
  • 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.
  • 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.
  • the light source 1 may also be a light source that emits light to the surroundings.
  • the angle between the beam and the optical axis is defined as the divergence angle.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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;
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 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 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.
  • the directions of propagation of the respective rays are substantially parallel, and are irradiated to the reflector 3 in the horizontal direction.
  • 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.
  • 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.
  • the directions of propagation of the respective rays are substantially parallel, and are irradiated to the reflector 3 in the horizontal direction.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the first non-transmissive portion is the total reflection portion ⁇
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • 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.
  • the first curved surface may be, for example, the first convex surface or the fourth convex surface in FIGS. 3A-3C
  • the second curved surface may be, for example, the total convex third convex surface and the total reflection type in FIGS. 3A-3C.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the light-emitting device 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • a multi-light source scheme is adopted, and a plurality of light sources may be arranged in a square matrix ⁇
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the outer surface of the first columnar cylinder 9 has a first uneven surface structure 9a
  • 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.
  • the first uneven surface structure 9a is a first wave surface structure
  • the second uneven surface structure 10a is a second wave surface structure.
  • 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:
  • 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.
  • 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.
  • 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.
  • 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.
  • the angle of rotation of the first cylindrical cylinder is small, the light passes through the gap 12 ⁇ , 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.
  • FIG. 8C shows the two cylinders in the maximum spot state.
  • 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.
  • 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.
  • 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.
  • FIG. 10 is another embodiment of the male spot adjusting assembly.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the light from the plurality of light sources can be reflected by the respective reflectors, and the light can be concentrated on one spot.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un dispositif émetteur de lumière (100) comprenant : une source de lumière (1), un élément de déviation de lumière (2) et un abat-jour réfléchissant (3); l'abat-jour réfléchissant (3) comprend une extrémité supérieure (301), une extrémité inférieure (302) qui est dotée d'une ouverture annulaire, et un corps de réflecteur (303) qui s'étend progressivement de l'extrémité supérieure (301) à l'extrémité inférieure (302), le corps de réflecteur (303) étant symétrique autour d'un axe central; la source de lumière (1) est située au niveau d'une extrémité supérieure (301) de l'abat-jour réfléchissant (3) et fait face à l'extrémité inférieure (302) de l'abat-jour réfléchissant (3) et peut émettre une lumière vers l'avant et une lumière latérale; l'élément de déviation de lumière (2) est située entre la source de lumière (1) et l'abat-jour réfléchissant (3), et l'élément de déviation de lumière (2) est utilisé pour collecter la lumière vers l'avant et la lumière latérale, réglant la direction de déviation de la lumière vers l'avant et de la lumière latérale de sorte que la lumière vers l'avant et la lumière latérale qui émergent de l'élément de déviation de lumière (2) sont projetées sur un côté interne du corps de réflecteur (303) de l'abat-jour réfléchissant (3); l'abat-jour réfléchissant (3) mélange et réfléchit alors un faisceau lumineux, et des rayons lumineux provenant de différentes positions de l'abat-jour réfléchissant (3) sont enfin superposés au niveau d'une position souhaitée pour former un point lumineux souhaité. En utilisant un tel dispositif émetteur de lumière (100), une lampe chirurgicale ne présentant pas d'effet d'ombre peut être obtenue.
PCT/CN2017/076685 2017-03-15 2017-03-15 Dispositif émetteur de lumière et lampe chirurgicale WO2018165880A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES17900462T ES2926223T3 (es) 2017-03-15 2017-03-15 Dispositivo emisor de luz y lámpara quirúrgica
CN201780024468.6A CN109073206B (zh) 2017-03-15 2017-03-15 一种发光装置及手术灯
EP17900462.7A EP3597993B1 (fr) 2017-03-15 2017-03-15 Dispositif émetteur de lumière et lampe chirurgicale
CN202011573608.5A CN112664909B (zh) 2017-03-15 2017-03-15 一种光斑调节组件、发光装置及手术灯
PCT/CN2017/076685 WO2018165880A1 (fr) 2017-03-15 2017-03-15 Dispositif émetteur de lumière et lampe chirurgicale

Applications Claiming Priority (1)

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PCT/CN2017/076685 WO2018165880A1 (fr) 2017-03-15 2017-03-15 Dispositif émetteur de lumière et lampe chirurgicale

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EP (1) EP3597993B1 (fr)
CN (2) CN112664909B (fr)
ES (1) ES2926223T3 (fr)
WO (1) WO2018165880A1 (fr)

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CN113464904A (zh) * 2021-07-05 2021-10-01 青岛大学附属医院 一种可调节式的手术室护理用采光灯
CN114026362A (zh) * 2019-06-28 2022-02-08 昕诺飞控股有限公司 用于led设备的两级光学器件

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CN113464904A (zh) * 2021-07-05 2021-10-01 青岛大学附属医院 一种可调节式的手术室护理用采光灯

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CN109073206A (zh) 2018-12-21
ES2926223T3 (es) 2022-10-24
EP3597993A4 (fr) 2020-11-11
CN112664909B (zh) 2023-05-30
EP3597993B1 (fr) 2022-06-01
CN109073206B (zh) 2021-01-15
EP3597993A1 (fr) 2020-01-22
CN112664909A (zh) 2021-04-16

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