WO2020019713A1 - Led lighting device - Google Patents

Led lighting device Download PDF

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Publication number
WO2020019713A1
WO2020019713A1 PCT/CN2019/076628 CN2019076628W WO2020019713A1 WO 2020019713 A1 WO2020019713 A1 WO 2020019713A1 CN 2019076628 W CN2019076628 W CN 2019076628W WO 2020019713 A1 WO2020019713 A1 WO 2020019713A1
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WIPO (PCT)
Prior art keywords
light
white light
coating layer
filter
light source
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PCT/CN2019/076628
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French (fr)
Chinese (zh)
Inventor
张权
李屹
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深圳市绎立锐光科技开发有限公司
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Publication of WO2020019713A1 publication Critical patent/WO2020019713A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters

Definitions

  • the present application relates to the technical field of LED lighting, and in particular, to an LED lighting device.
  • LEDs As lighting sources. Because light sources have strict requirements on the color rendering index in lighting fixtures, the current white LED technology has made great progress in improving color rendering, but The improvement of the color rendering index of LEDs with low color rendering index still cannot meet the needs of professional stage. Professional stage performances require very high white LED light flux output and high color rendering of the light source (Ra is generally required to be greater than 90). In this way, the reflected color after the object is illuminated is more realistic and reducible.
  • the primary means is to lower the junction temperature of the LED, followed by the ability of the phosphor to adapt to high temperatures. That is, using color compensation technology, red or amber LEDs are used to compensate the color rendering index.
  • the most effective method is to design an LED packaging method with high heat dissipation performance, and the entire LED industry currently has less research on this. Improving the stability of phosphors is the mainstream of white LED technology. In this regard, China's current technical strength is relatively weak, and breakthroughs cannot be achieved in the short term.
  • Color compensation technology is a technical method to compensate for the decrease in LED color rendering index caused by color. This technical method is feasible in principle, but in practical applications, it faces strict restrictions on technical methods of mixed light conditions. , So the practical value is not high.
  • the technical problem mainly solved by the present application is to provide an LED lighting device, which can effectively improve the color rendering index and keep the color temperature of white light stable.
  • an LED lighting device including a light source and a filter assembly.
  • the light source is used to emit white light.
  • the filter component may be selectively disposed on a light output path of the white light, and when the filter component is disposed on the light output path of the white light, the filter component is configured to filter the white light to improve the white light.
  • the filter assembly includes a substrate and a coating layer, the coating layer is disposed on one side of the substrate, and the coating layer is disposed at least for light having a wavelength between 430 nm and 460 nm and a wavelength between 510 nm and 635 nm in the white light. Filtered.
  • the present application has the beneficial effect that, by setting the coating layer of the filter element to filter light with a wavelength in the range of 510nm-635nm, the present application reduces the light in the spectrum 510nm-635nm.
  • the ratio can break through the bottleneck of the improvement of the color rendering index of the prior art, and more effectively improve the color rendering index of white light after filtering.
  • reducing the proportion of light in the spectrum in the wavelength range of 510nm-635nm will cause white light after filtering.
  • the coating layer is further set to filter light with a wavelength in the range of 430nm-460nm, and reduce the wavelength in the range of 430-460nm.
  • the ratio of the light in the spectrum so that the color temperature of the white light after filtering can be maintained, while the color rendering index of white light is further improved, and the color rendering index of the existing LED lamp is not high, and the existing color rendering index is not high. Improving technology cannot effectively improve the color rendering index and other issues.
  • FIG. 1 is a schematic structural diagram of an embodiment of an LED lighting device according to the present application.
  • FIG. 2 is a schematic diagram of a transmittance curve of a filter component according to an embodiment of the LED lighting device of the present application
  • FIG. 3 is a schematic diagram of a white light spectrum after being filtered by a filter component according to an embodiment of the LED lighting device of the present application;
  • FIG. 4 is a schematic diagram of a transmittance curve of a comparative filter element according to an embodiment of the LED lighting device of the present application
  • FIG. 5 is a schematic diagram of a white light spectrum after being filtered by a comparative filter component according to an embodiment of the LED lighting device of the present application;
  • FIG. 6 is a schematic top view of the structure shown in FIG. 1;
  • FIG. 7 is a schematic structural diagram of another embodiment of an LED lighting device according to the present application.
  • FIG. 8 is another schematic structural diagram of an embodiment of an LED lighting device according to the present application.
  • an embodiment of the LED lighting device of the present application includes a light source 11 and a filter assembly 12.
  • the light source 11 is used for emitting white light.
  • the light source 11 is an LED light source, for example, composed of one or more LED lamp beads, and may be distributed in an array type, for example.
  • the light source 11 includes a blue LED chip (not shown) and a yellow phosphor (not shown).
  • the blue LED chip excites the yellow phosphor to achieve white light, and the yellow phosphor is YAG: xCe 3 + Phosphor, where x ranges from 0.8% to 1.2%.
  • the light source 11 may also excite the RGB tri-color phosphors through a UV LED chip to generate white light.
  • the light source 11 may also have other components that can synthesize white light.
  • the light source 11 in this embodiment may be a low display index light source, for example, the color rendering index is lower than Ra ⁇ 85.
  • the color rendering index Ra of the light source 11 in this embodiment is ⁇ 80.
  • the light source 11 may also have a color rendering index 90> Ra ⁇ 85, that is, when the technical solution of the present application is applied to the light source 11 with a color rendering index 90> Ra ⁇ 85, it can also effectively improve The color rendering index of the light emitted from the light source is effectively increased to Ra ⁇ 90.
  • the filter component 12 may be selectively disposed on a light output path of the white light.
  • the white light is emitted after being filtered by the filter component 12 to improve white light.
  • the filter element 12 can be selectively set on the light output path of the white light, and can be set on the light output path when the white light needs to be filtered, and not on the light output path when the white light is not required to be filtered, so that it can be expanded For the purpose of the LED lighting device, when dealing with different usage scenarios, it is possible to choose to install or not to provide the filter assembly 12.
  • the filter assembly 12 includes a substrate 122 and a coating layer 121.
  • the coating layer 121 is disposed on one side of the substrate 122.
  • the filter range of the coating layer 121 is set to at least a wavelength of 430 nm to 460 nm and a wavelength of 510nm-635nm light is filtered.
  • light having a wavelength of 430 nm to 460 nm and light having a wavelength of 510 nm to 635 nm in white light can be filtered.
  • the thickness of the coating layer 121 can be adjusted to set a corresponding color. The coating and the position of the coating can be realized.
  • the coating layer 121 of the filter component 12 filters light having a wavelength in a range of 510 nm to 635 nm, and reduces the proportion of light having a wavelength in a range of 510 nm to 635 nm in the spectrum, so that the filtering can be effectively improved.
  • the color temperature of the filtered white light will change.
  • the wavelength of the light in the range of 430nm-460nm is changed.
  • the light is filtered to reduce the proportion of light with a wavelength of 430-460nm in the spectrum, so that the color temperature of the filtered white light can be kept stable, the color temperature deviation from the original white light is small or can remain unchanged, and the white light can be further improved.
  • the color rendering index solves the problem that the color rendering index of existing LED lamps is not high.
  • the existing color rendering index improving technology cannot effectively improve the color rendering index, so that the existing LED lamps cannot have the technical problems of multiple uses.
  • the coating layer 121 is disposed on a side of the substrate 122 adjacent to the light source 11, so that the white light emitted from the light source 11 can be directly filtered, the white light loss can be reduced, and the filtering efficiency can be improved to improve the light source 11. Color rendering index.
  • the coating layer 121 may also be disposed on a side of the substrate 122 away from the light source 11.
  • the coating layer 121 is further configured so that when the light having a wavelength of 510 nm to 635 nm is filtered, the minimum transmittance of the transmittance curve of the coating layer 121 is 48% to 52%.
  • the transmittance curve decreases first and then increases with increasing wavelength, and the ratio of the half-peak width d to the peak width D of the transmittance curve is 0.7-0.9.
  • the transmittance curve of the coating layer 121 has a larger half-peak. Wide d.
  • the peak width D mentioned in this application refers to the distance between the tangent lines at the inflection points on both sides of the transmittance curve, and the point where the tangent line intersects with the bottom of the peak;
  • the width of the peak at a point is a line parallel to the bottom of the peak at 1/2 of the peak height, and the distance between the two points where the straight line intersects the transmittance curve.
  • the change in light transmittance of 510nm-635nm in this embodiment can also be achieved by changing the structure of the coating layer, for example, by adjusting the thickness of the coating layer 121, the coating layer of the corresponding color, and the position of the coating layer. And so on.
  • the coating layer 121 is further configured to filter the light with a wavelength of 510nm-635nm, and the minimum transmittance of the transmittance curve is about 550nm, and the transmittance curve is in the range of 510nm-550nm.
  • the average change rate of the transmittance curve is greater than the average change rate of the transmittance curve in the range of 550nm-635nm.
  • the filter module 12 can effectively improve the color rendering index when filtering the light with a wavelength of 510nm-635nm, and by setting the coating layer to filter the wavelength between 510nm-635nm, its transmission
  • the rate curve has a large half-peak width value and the transmittance curve is asymmetric, the effect of improving the color rendering index can be further achieved, and the problem that the color rendering index of the LED lamp cannot be effectively improved in the prior art can be solved.
  • the filtering technology in the prior art is generally a traditional single-peak transmission curve. Due to the narrow filtering range, a single peak is formed. For example, when the light of 500nm-540nm is filtered, the minimum transmission of the filter curve The transmittance is around 520nm, the minimum transmittance is 45%, and the ratio of the half-peak width to the peak width of the transmittance curve is about 0.5, which can improve the color rendering index.
  • the existing technology often uses The filter has a narrow filter range and forms a single peak-shaped transmittance curve to minimize the impact on light flux, etc., but there is still a relatively large limitation on the improvement of the color rendering index.
  • the selection of the filter band is not Just simply expanding the filtering range, simply expanding the filtering range may not necessarily further improve the color rendering index, and may cause large deviations in color temperature and insufficient luminous flux. Please refer to Table 1 and FIG. 3 for details.
  • the color temperature of the original white light remains stable, does not produce large deviations or can remain unchanged, and can also obtain a large luminous flux to meet the needs of professional stages.
  • the coating layer 121 is further configured to have a minimum transmittance to 450 nm light when filtering light having a wavelength of 430 nm to 460 nm.
  • the filter module 12 of this embodiment filters the light at 510nm-635nm, and also filters the light at 430nm-460nm, so as to ensure that the color temperature of the filtered white light remains relatively stable.
  • the coating layer 121 when the coating layer 121 filters light with a wavelength of 430nm-460nm, its transmittance to 450nm light is the smallest, and the coating layer 121 can further effectively reduce the transmission of 450nm blue light, so that the filtering After the white light maintains a more stable color temperature.
  • the coating layer 121 is further set to have a transmittance of light at 450 nm of 38% -41%.
  • the coating layer 121 is further set to have a transmittance of light of 450 nm to 40%.
  • a comparative filter component is selected, and its filtering wavelength is between 510nm-600nm.
  • the minimum transmittance of the transmittance curve is 48% -52%, and the minimum transmittance is about 555nm.
  • the ratio of the half-peak width to the peak width of the transmittance curve is about 0.45, as shown in Figure 4. Transmission curve.
  • the transmittance curve of the filter element 12 using this embodiment is shown in FIG. 2, and the spectral comparison chart before and after filtering is shown in FIG. 3. It can be clearly known from FIG. 460nm and 510-635nm light in two different wavelength bands are filtered and transmitted through white light. Due to the synergy of the two bands of filtering, the spectrum of filtered white light approaches a high display index. The spectrum of the light source corresponds to line 2 and line 3 in FIG. 3, so that a higher color rendering index can be obtained.
  • the transmittance curve shown in FIG. 2 is only an example, and is not unique, and the spectrum comparison chart of FIG. 3 is not unique.
  • Table 1 The comparison of the filtering effect between the filter element 12 of this embodiment and the comparative filter element is shown in Table 1 below.
  • the transmittance curve of the comparative filter element selected in this embodiment is also roughly a peak shape, but the effect of improving the color rendering index is greater than that of the traditional peak transmittance curve commonly used in the prior art mentioned above.
  • the LED lighting device further includes a driving component 13, such as a driving motor.
  • the driving component 13 is used to drive the filter component 12 to move, so as to drive the filter component 12 into the white light exit path when white light needs to be filtered and to drive the filter component 12 to leave the white light when no white light is required to be filtered Path, so that the filter assembly 12 can be selectively arranged in the light exit path.
  • the LED lighting device further includes a track (not shown), the filter assembly 12 is slidably disposed on the track, and the driving assembly 13 drives the filter assembly 12 to move on the track, so as to perform white light on demand.
  • the filter component 12 is driven into the white light output path and when the white light does not need to be filtered, the filter component 12 is driven to leave the white light output path.
  • the device further includes a bracket 14, the filter assembly 12 is disposed on the bracket 14, and the driving assembly 13 is used to drive the bracket 14 to rotate to drive the filter assembly 12 to move.
  • the bracket 14 includes a rotation shaft 141, such as the rotation shaft 141 shown in FIG. 1.
  • a corner portion of the substrate 122 is connected to the rotation shaft 141, and the driving component 13 drives the rotation shaft 141 to rotate.
  • the rotation plane formed by the rotation trajectory of 122 is parallel or substantially parallel to the light exit path.
  • the bracket 14 is disposed on one side of the filter assembly 12, and the bracket 14 can be rotated on a plane perpendicular to the light output path to drive the substrate 122 to rotate in a direction perpendicular to the light output path.
  • the device further includes a casing 15, a pattern sheet 16, and a lamp cover 17.
  • the light source 11 and the filter assembly 12 are respectively disposed in the casing 15, and the pattern sheet 16 is disposed in the casing 15, and
  • the white light exit path is located between the light source 11 and the filter assembly 12, or the white light exit path is located on the side of the filter assembly 12 away from the light source 11, and the lamp cover 17 is covered on the housing 15.
  • the pattern sheet 16, also called a GOBO surface is provided with a pattern, and can be projected by white light under the illumination of the light source 11 to meet the needs of different scenes.
  • this application has been verified through long-term research.
  • the coating layer 121 of the filter element 12 By setting the coating layer 121 of the filter element 12 to filter light with a wavelength in the range of 510nm-635nm, the spectrum of light with a wavelength in the range of 510nm-635nm is reduced. It can break through the bottleneck of the improvement of the color rendering index of the prior art, and more effectively increase the color rendering index of white light after filtering.
  • reducing the proportion of light in the spectrum in the wavelength range of 510nm-635nm will cause the The color temperature of the white light changes.
  • the coating layer 121 is further set to filter light having a wavelength in the range of 430nm-460nm to reduce The proportion of light with a wavelength between 430nm and 460nm in the spectrum can maintain the color temperature of the filtered white light relative to the original white light while maintaining the color rendering index of the white light to further improve the color rendering index of existing LED lamps.
  • the color rendering index cannot be effectively improved, so that the existing LED lamp cannot have the technical problems of multiple uses.

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

Abstract

An LED lighting device comprises a light source (11) and a light filtering assembly (12). The light source (11) is used to emit white light. The light filtering assembly (12) is selectively provided on an exit path of the white light. When provided on the exit path of the white light, the light filtering assembly (12) performs filtering of the white light to increase a color rendering index of the white light. The light filtering assembly (12) comprises a substrate (122) and a coating layer (121). The coating layer (121) is provided at one side of the substrate (122). The coating layer (121) is configured to perform filtering of light components in the white light in wavelength ranges of 430 nm-460 nm and 510 nm-635 nm. The invention can effectively increase a color rendering index of a light source (11).

Description

一种LED照明装置LED lighting device 技术领域Technical field
本申请涉及LED照明技术领域，特别是涉及一种LED照明装置。The present application relates to the technical field of LED lighting, and in particular, to an LED lighting device.
背景技术Background technique
随着LED技术的不断发展，使LED作为照明光源成为可能，由于光源在照明灯具中对显色指数有着严格的要求，而目前白光LED技术在显色性提升方面有了很大的进步，但是对于低显色指数的LED的显色指数提高方面仍然不能满足专业舞台的需求。专业的舞台演出需要非常高白光LED光通量输出，同时需要光源显色性比较高(一般要求Ra大于90)，这样照射物体后反射的颜色比较真实，还原性好。With the continuous development of LED technology, it has become possible to use LEDs as lighting sources. Because light sources have strict requirements on the color rendering index in lighting fixtures, the current white LED technology has made great progress in improving color rendering, but The improvement of the color rendering index of LEDs with low color rendering index still cannot meet the needs of professional stage. Professional stage performances require very high white LED light flux output and high color rendering of the light source (Ra is generally required to be greater than 90). In this way, the reflected color after the object is illuminated is more realistic and reducible.
在现有技术中，对于低显色指数的白光LED，要想提升荧光粉白光LED的显色指数，首要的手段是降低LED的结温，其次是提高荧光粉对高温的适应能力，第三即采用色彩补偿技术，采用红光或琥珀色LED对显色指数进行补偿。在降低LED结温方面，最有效的手段是设计散热性能较高的LED封装方式，而整个LED产业目前对此研究较少。提高荧光粉稳定性，是白光LED技术的主流，在这个方面我国目前技术力量较为薄弱，短期内不能获得突破进展。色彩补偿技术是一种弥补因色彩确实造成LED显色指数降低的一种技术手段，这种技术手段从原理上讲是可行的，但是在实际应用中，面临着混光条件技术手段的严格制约，所以实用价值不高。In the prior art, for white LEDs with a low color rendering index, to increase the color rendering index of phosphor white LEDs, the primary means is to lower the junction temperature of the LED, followed by the ability of the phosphor to adapt to high temperatures. That is, using color compensation technology, red or amber LEDs are used to compensate the color rendering index. In terms of reducing the LED junction temperature, the most effective method is to design an LED packaging method with high heat dissipation performance, and the entire LED industry currently has less research on this. Improving the stability of phosphors is the mainstream of white LED technology. In this regard, China's current technical strength is relatively weak, and breakthroughs cannot be achieved in the short term. Color compensation technology is a technical method to compensate for the decrease in LED color rendering index caused by color. This technical method is feasible in principle, but in practical applications, it faces strict restrictions on technical methods of mixed light conditions. , So the practical value is not high.
实用新型内容Utility model content
本申请主要解决的技术问题是提供一种LED照明装置，能够有效提高显色指数，且使得白光的色温保持稳定。The technical problem mainly solved by the present application is to provide an LED lighting device, which can effectively improve the color rendering index and keep the color temperature of white light stable.
为解决上述技术问题，本申请技术方案提供一种LED照明装置，包 括光源、滤光组件。光源用于出射白光。滤光组件可选择性地设置于所述白光的出光路径上，其中当所述滤光组件设置在所述白光的出光路径上时用于对所述白光进行滤光，以提高所述白光的显色指数。其中所述滤光组件包括基板和镀膜层，所述镀膜层设置于所述基板一侧，所述镀膜层设置成至少对所述白光中的波长在430nm-460nm和波长在510nm-635nm的光进行滤光。In order to solve the above technical problems, the technical solution of the present application provides an LED lighting device including a light source and a filter assembly. The light source is used to emit white light. The filter component may be selectively disposed on a light output path of the white light, and when the filter component is disposed on the light output path of the white light, the filter component is configured to filter the white light to improve the white light. Color rendering index. The filter assembly includes a substrate and a coating layer, the coating layer is disposed on one side of the substrate, and the coating layer is disposed at least for light having a wavelength between 430 nm and 460 nm and a wavelength between 510 nm and 635 nm in the white light. Filtered.
与现有技术相比，本申请的有益效果是：本申请通过将滤光组件的镀膜层设置成对波长在510nm-635nm范围内的光进行滤光，以降低光谱510nm-635nm波段的光的比例，能够突破现有技术显色指数提高的瓶颈，更加有效提高滤光后的白光的显色指数，同时由于降低波长在510nm-635nm范围的光在光谱中的比例会导致滤光后的白光的色温发生变化，为了平衡滤光后的白光的色温且进一步提高显色指数，在本申请中将镀膜层进一步设置成对波长在430nm-460nm范围的光进行滤光，降低波长在430-460nm的光在光谱中的比例，如此在能够保持滤光后的白光的色温不变的同时，进一步提高白光的显色指数，解决现有LED灯显色指数不高，且现有的显色指数提高技术无法有效提高显色指数等问题。Compared with the prior art, the present application has the beneficial effect that, by setting the coating layer of the filter element to filter light with a wavelength in the range of 510nm-635nm, the present application reduces the light in the spectrum 510nm-635nm. The ratio can break through the bottleneck of the improvement of the color rendering index of the prior art, and more effectively improve the color rendering index of white light after filtering. At the same time, reducing the proportion of light in the spectrum in the wavelength range of 510nm-635nm will cause white light after filtering. In order to balance the color temperature of the white light after filtering and to further improve the color rendering index, in this application, the coating layer is further set to filter light with a wavelength in the range of 430nm-460nm, and reduce the wavelength in the range of 430-460nm. The ratio of the light in the spectrum, so that the color temperature of the white light after filtering can be maintained, while the color rendering index of white light is further improved, and the color rendering index of the existing LED lamp is not high, and the existing color rendering index is not high. Improving technology cannot effectively improve the color rendering index and other issues.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本申请LED照明装置实施例的一结构示意图；1 is a schematic structural diagram of an embodiment of an LED lighting device according to the present application;
图2是本申请LED照明装置实施例的滤光组件的透过率曲线示意图；2 is a schematic diagram of a transmittance curve of a filter component according to an embodiment of the LED lighting device of the present application;
图3是本申请LED照明装置实施例的经滤光组件滤光后的白光光谱示意图；3 is a schematic diagram of a white light spectrum after being filtered by a filter component according to an embodiment of the LED lighting device of the present application;
图4是本申请LED照明装置实施例的比较滤光组件的透过率曲线示意图；4 is a schematic diagram of a transmittance curve of a comparative filter element according to an embodiment of the LED lighting device of the present application;
图5是本申请LED照明装置实施例的经比较滤光组件滤光后的白光光谱示意图；FIG. 5 is a schematic diagram of a white light spectrum after being filtered by a comparative filter component according to an embodiment of the LED lighting device of the present application; FIG.
图6是图1的所示结构的俯视示意图；6 is a schematic top view of the structure shown in FIG. 1;
图7是本申请LED照明装置实施例另一结构示意图；7 is a schematic structural diagram of another embodiment of an LED lighting device according to the present application;
图8是本申请LED照明装置实施例又一结构示意图。FIG. 8 is another schematic structural diagram of an embodiment of an LED lighting device according to the present application.
具体实施方式detailed description
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
一般低显色指数的LED灯无法满足专业舞台等场景的要求，在需要时必须提高LED的显色指数，现有技术中的现有显色指数提高方式并不能有效提高LED灯的显色指数，存在瓶颈，尤其是现有技术中采用传统的单尖峰型的透过率曲线的滤光技术，仍然无法使得低显示指数的LED灯提高至Ra＝90以上，为了解决上述技术问题，本申请提供如下实施例：Generally, LED lamps with low color rendering index cannot meet the requirements of professional stage and other scenes. When necessary, the color rendering index of LED must be increased. The existing color rendering index improving methods in the prior art cannot effectively improve the color rendering index of LED lamps. There are bottlenecks, especially the conventional single-peak-type transmittance curve filtering technology in the prior art, which still fails to improve the LED lamp with a low display index to Ra = 90 or more. In order to solve the above technical problems, this application The following examples are provided:
参阅图1，本申请LED照明装置实施例包括光源11、滤光组件12。其中光源11用于出射白光。在本实施例中，光源11为LED光源，例如由一个或多个LED灯珠构成的，例如可以呈阵列式分布。在本实施例中，光源11包括蓝色LED芯片(图未示)和黄光荧光粉(图未示)，蓝色LED芯片激发黄光荧光粉以实现白光，黄色荧光粉为YAG:xCe 3+荧光粉，其中，x的范围为0.8％-1.2％。光源11还可以是通过紫外光LED芯片激发RGB三色荧光粉以产生白光，当然光源11还可以是可以合成白光的其他组成。可选的是，本实施例中的光源11可以是低显示指数光源，例如显色指数低于Ra≤85。进一步可选地，本实施例中的光源11的显色指数Ra≤80。当然，在其他实施例中，光源11也可以是显色指数90>Ra≥85，也即本申请的技术方案应用在显色指数90>Ra≥85的光源11上时，同样能够有效地提高光源出射光的显色指数，有效地提高至Ra≥90。 Referring to FIG. 1, an embodiment of the LED lighting device of the present application includes a light source 11 and a filter assembly 12. The light source 11 is used for emitting white light. In this embodiment, the light source 11 is an LED light source, for example, composed of one or more LED lamp beads, and may be distributed in an array type, for example. In this embodiment, the light source 11 includes a blue LED chip (not shown) and a yellow phosphor (not shown). The blue LED chip excites the yellow phosphor to achieve white light, and the yellow phosphor is YAG: xCe 3 + Phosphor, where x ranges from 0.8% to 1.2%. The light source 11 may also excite the RGB tri-color phosphors through a UV LED chip to generate white light. Of course, the light source 11 may also have other components that can synthesize white light. Optionally, the light source 11 in this embodiment may be a low display index light source, for example, the color rendering index is lower than Ra ≦ 85. Further optionally, the color rendering index Ra of the light source 11 in this embodiment is ≦ 80. Of course, in other embodiments, the light source 11 may also have a color rendering index 90> Ra ≧ 85, that is, when the technical solution of the present application is applied to the light source 11 with a color rendering index 90> Ra ≧ 85, it can also effectively improve The color rendering index of the light emitted from the light source is effectively increased to Ra≥90.
在本实施例中，滤光组件12可选择性地设置于白光的出光路径上，其中当滤光组件12设置在白光的出光路径上时白光经滤光组件12滤光后射出，以提高白光的显色指数。滤光组件12可以选择性地设置于白 光的出光路径上，可以在需要对白光进行滤光时设置在出光路径上，在不需要对白光进行滤光时不设置在出光路径上，如此可以扩大LED照明装置的用途，在应对不同使用场景的时候，可以选择设置或者不设置滤光组件12。In this embodiment, the filter component 12 may be selectively disposed on a light output path of the white light. When the filter component 12 is disposed on the light output path of the white light, the white light is emitted after being filtered by the filter component 12 to improve white light. Color rendering index. The filter element 12 can be selectively set on the light output path of the white light, and can be set on the light output path when the white light needs to be filtered, and not on the light output path when the white light is not required to be filtered, so that it can be expanded For the purpose of the LED lighting device, when dealing with different usage scenarios, it is possible to choose to install or not to provide the filter assembly 12.
参阅图1和图2，滤光组件12包括基板122和镀膜层121，镀膜层121设置于基板122一侧，镀膜层121滤光范围设置成至少对白光中的波长在430nm-460nm和波长在510nm-635nm的光进行滤光。本实施例能够通过镀膜层121结构的改进实现对白光中的波长在430nm-460nm的光和波长在510nm-635nm的光进行滤光时，例如可以通过镀膜层121的厚度调整、设置相应颜色的涂层和涂层的设置位置等能够实现。Referring to FIGS. 1 and 2, the filter assembly 12 includes a substrate 122 and a coating layer 121. The coating layer 121 is disposed on one side of the substrate 122. The filter range of the coating layer 121 is set to at least a wavelength of 430 nm to 460 nm and a wavelength of 510nm-635nm light is filtered. In this embodiment, when the structure of the coating layer 121 is improved, light having a wavelength of 430 nm to 460 nm and light having a wavelength of 510 nm to 635 nm in white light can be filtered. For example, the thickness of the coating layer 121 can be adjusted to set a corresponding color. The coating and the position of the coating can be realized.
在本实施例中，通过滤光组件12的镀膜层121对波长在510nm-635nm范围内的光进行滤光，降低波长在510nm-635nm范围的光在光谱中的比例，如此可以有效提高滤光后的白光的显色指数，同时由于降低波长在510nm-635nm范围的光在光谱中的比例会导致滤光后的白光的色温发生变化，在本实施例中通过对波长在430nm-460nm范围的光进行滤光，降低波长在430-460nm的光在光谱中的比例，如此能够保持滤光后的白光的色温稳定，与原始白光的色温偏差小或者可以保持不变，而且能够进一步提高白光的显色指数，解决现有LED灯显色指数不高，现有的显色指数提高技术中，无法有效提高显色指数，使得现有的LED灯无法具备多种用途的技术问题。In this embodiment, the coating layer 121 of the filter component 12 filters light having a wavelength in a range of 510 nm to 635 nm, and reduces the proportion of light having a wavelength in a range of 510 nm to 635 nm in the spectrum, so that the filtering can be effectively improved. After reducing the color rendering index of white light and reducing the proportion of light in the spectrum in the wavelength range of 510nm-635nm, the color temperature of the filtered white light will change. In this embodiment, the wavelength of the light in the range of 430nm-460nm is changed. The light is filtered to reduce the proportion of light with a wavelength of 430-460nm in the spectrum, so that the color temperature of the filtered white light can be kept stable, the color temperature deviation from the original white light is small or can remain unchanged, and the white light can be further improved. The color rendering index solves the problem that the color rendering index of existing LED lamps is not high. The existing color rendering index improving technology cannot effectively improve the color rendering index, so that the existing LED lamps cannot have the technical problems of multiple uses.
参阅图1，可选的是，镀膜层121设置于基板122邻近光源11的一侧面，如此能够直接对光源11出射的白光进行滤光，减少白光损耗，提高滤光效率从而可以提高光源11的显色指数。当然，在其他实施例中，镀膜层121也可以设置在基板122远离光源11的一侧面。Referring to FIG. 1, optionally, the coating layer 121 is disposed on a side of the substrate 122 adjacent to the light source 11, so that the white light emitted from the light source 11 can be directly filtered, the white light loss can be reduced, and the filtering efficiency can be improved to improve the light source 11. Color rendering index. Of course, in other embodiments, the coating layer 121 may also be disposed on a side of the substrate 122 away from the light source 11.
参阅图2，可选的是，镀膜层121进一步设置成在对波长在510nm-635nm的光进行滤光时，镀膜层121的透过率曲线的最小透过率为48％～52％，透过率曲线随波长的增大先减小后增大，且透过率曲线的半峰宽d与峰宽D的比值为0.7-0.9，镀膜层121的透过率曲线具有较大的半峰宽d。本申请中提及的峰宽D是指透过率曲线两侧拐点处所作切 线，切线与峰底相交的两点间的距离；半峰宽d是指透过率曲线峰值高度的1/2处的峰宽度，在峰高的1/2处作平行于峰底的直线，直线与透过率曲线相交的两点间的距离。Referring to FIG. 2, optionally, the coating layer 121 is further configured so that when the light having a wavelength of 510 nm to 635 nm is filtered, the minimum transmittance of the transmittance curve of the coating layer 121 is 48% to 52%. The transmittance curve decreases first and then increases with increasing wavelength, and the ratio of the half-peak width d to the peak width D of the transmittance curve is 0.7-0.9. The transmittance curve of the coating layer 121 has a larger half-peak. Wide d. The peak width D mentioned in this application refers to the distance between the tangent lines at the inflection points on both sides of the transmittance curve, and the point where the tangent line intersects with the bottom of the peak; The width of the peak at a point is a line parallel to the bottom of the peak at 1/2 of the peak height, and the distance between the two points where the straight line intersects the transmittance curve.
本实施例对510nm-635nm的光的透过率的变化，同样可以通过镀膜层的结构的改变的实现，例如通过镀膜层121的膜层厚度调整、相应颜色的涂层和涂层的设置位置等能够实现。The change in light transmittance of 510nm-635nm in this embodiment can also be achieved by changing the structure of the coating layer, for example, by adjusting the thickness of the coating layer 121, the coating layer of the corresponding color, and the position of the coating layer. And so on.
参阅图2，可选的是，镀膜层121进一步设置成在对波长在510nm-635nm的光进行滤光时，其透过率曲线的最小透过率位于550nm左右，在510nm-550nm范围内透过率曲线的平均变化率大于在550nm-635nm范围内透过率曲线的平均变化率。Referring to FIG. 2, optionally, the coating layer 121 is further configured to filter the light with a wavelength of 510nm-635nm, and the minimum transmittance of the transmittance curve is about 550nm, and the transmittance curve is in the range of 510nm-550nm. The average change rate of the transmittance curve is greater than the average change rate of the transmittance curve in the range of 550nm-635nm.
经发明人长期研发发现，滤光组件12在对波长在510nm-635nm的光进行滤光能够有效提高显色指数，而通过设置镀膜层在对波长在510nm-635nm进行滤光时，其透过率曲线具有较大的半峰宽值时且透过率曲线为非对称时，可以进一步实现更好的提高显色指数的效果，解决现有技术中无法将有效提升LED灯显色指数的问题。After long-term research and development by the inventor, it was found that the filter module 12 can effectively improve the color rendering index when filtering the light with a wavelength of 510nm-635nm, and by setting the coating layer to filter the wavelength between 510nm-635nm, its transmission When the rate curve has a large half-peak width value and the transmittance curve is asymmetric, the effect of improving the color rendering index can be further achieved, and the problem that the color rendering index of the LED lamp cannot be effectively improved in the prior art can be solved. .
在现有技术中的滤光技术一般是传统单一尖峰型透过率曲线，由于滤光范围较窄从而形成单一的尖峰，例如对500nm-540nm的光进行滤光，其滤光曲线的最小透过率位于520nm左右，最小透过率为45％，其透过率曲线的半峰宽与峰宽的比值约为0.5，其可以提高显色指数，但是这种滤光波段的滤光片对低显色指数的白光的显色指数提高不明显，例如光源11白光的Ra＝73.3，现有技术中只能提高至Ra＝78～85，难以突破Ra＝90。实际上，由于对白光进行滤光，想要将低显色指数提高显色指数到Ra＝90以上，同时保证光通量的相对稳定，一直需要较大的研发强度去攻克，因此现有技术常采用滤光片的滤光范围较窄，形成单一尖峰型的透过率曲线，以尽量减少对光通量等的影响，但是对于显色指数的提高依然是存在比较大局限，对于滤光波段的选取并非只是简单扩大滤光范围，简单扩大滤光范围并不一定能够进一步提高显色指数，而且可能导致色温产生较大的偏差，且光通量不足。详细请参阅表1和图3，本实施例的滤光组件12能够将低显色指数Ra＝73.3的白光的显色指 数能提高至Ra＝92.5，同时能够保证滤光后的白光的色温相对于原始白光的色温保持稳定，不产生大的偏差或者可以保持不变，还能够获得较大的光通量，以满足专业舞台的需要。The filtering technology in the prior art is generally a traditional single-peak transmission curve. Due to the narrow filtering range, a single peak is formed. For example, when the light of 500nm-540nm is filtered, the minimum transmission of the filter curve The transmittance is around 520nm, the minimum transmittance is 45%, and the ratio of the half-peak width to the peak width of the transmittance curve is about 0.5, which can improve the color rendering index. However, the filter pair of this filter band The color rendering index of white light with a low color rendering index does not increase significantly. For example, Ra = 73.3 for white light of the light source 11 can only be raised to Ra = 78 to 85 in the prior art, and it is difficult to break through Ra = 90. In fact, since white light is filtered, it is necessary to increase the color rendering index to Ra = 90 or higher while maintaining the relatively stable luminous flux, which has always required greater R & D intensity to overcome. Therefore, the existing technology often uses The filter has a narrow filter range and forms a single peak-shaped transmittance curve to minimize the impact on light flux, etc., but there is still a relatively large limitation on the improvement of the color rendering index. The selection of the filter band is not Just simply expanding the filtering range, simply expanding the filtering range may not necessarily further improve the color rendering index, and may cause large deviations in color temperature and insufficient luminous flux. Please refer to Table 1 and FIG. 3 for details. The filter element 12 of this embodiment can increase the color rendering index of white light with a low color rendering index Ra = 73.3 to Ra = 92.5, and at the same time can ensure the relative color temperature of the white light after filtering. The color temperature of the original white light remains stable, does not produce large deviations or can remain unchanged, and can also obtain a large luminous flux to meet the needs of professional stages.
参阅图2，可选的是，镀膜层121进一步设置成在对波长在430nm-460nm的光进行滤光时，其对450nm的光的透过率最小。Referring to FIG. 2, optionally, the coating layer 121 is further configured to have a minimum transmittance to 450 nm light when filtering light having a wavelength of 430 nm to 460 nm.
在对在510nm-635nm的光进行滤光时，在能够有效提高出白光的显色指数时，往往也带来色温改变的情况，导致滤光后的白光的色温与原始白光的色温出现较大的偏差，不能很好地满足使用要求。本实施例的滤光组件12通过在对在510nm-635nm的光进行滤光的同时，也对在430nm-460nm的光进行滤光，如此能够保证滤光后的白光的色温保持较为稳定状态。在本实施例中，镀膜层121在对波长在430nm-460nm的光进行滤光时，其对450nm的光的透过率最小，镀膜层121能够进一步有效减少450nm蓝光的透过，使得滤光后的白光保持较为稳定的色温。When filtering light at 510nm-635nm, when the color rendering index of white light can be effectively improved, the color temperature often changes, which leads to a larger color temperature of the filtered white light and the color temperature of the original white light. The deviation cannot meet the requirements of use well. The filter module 12 of this embodiment filters the light at 510nm-635nm, and also filters the light at 430nm-460nm, so as to ensure that the color temperature of the filtered white light remains relatively stable. In this embodiment, when the coating layer 121 filters light with a wavelength of 430nm-460nm, its transmittance to 450nm light is the smallest, and the coating layer 121 can further effectively reduce the transmission of 450nm blue light, so that the filtering After the white light maintains a more stable color temperature.
可选的是，镀膜层121进一步设置成对450nm的光的透过率为38％-41％。可选的是，镀膜层121进一步设置成对450nm的光的透过率为40％。经过发明人长期研究发现，对于450nm的蓝光的透过率38％-41％左右时，能够很好地平衡出色光源11的色温，同时也能保证滤光后的白光获得较高的显色指数。Optionally, the coating layer 121 is further set to have a transmittance of light at 450 nm of 38% -41%. Optionally, the coating layer 121 is further set to have a transmittance of light of 450 nm to 40%. After long-term research by the inventors, it has been found that when the transmittance of 450nm blue light is about 38% -41%, the color temperature of the excellent light source 11 can be well balanced, and the white light after filtering can also ensure a high color rendering index. .
为了验证本申请实施例的效果，例如本实施中采用的光源11所发射的白光的显色指数Ra＝73.3，色温CCT＝8000k，选取一比较滤光组件，其滤光波长为510nm-600nm之间，其透过率曲线的最小透过率为48％-52％，最小透过率位于555nm左右，透过率曲线的半峰宽与峰宽的比值约为0.45，如图4所示的透过率曲线。发明人在实验过程中发现该比较滤光组件无论如何扩大透过率曲线的滤光范围，以及如何改变透过率曲线最小透过率的位置，其调制后的白光显指都无法获得90以上的显色指数，如图5所示的光谱对比图，实际上经比较滤光组件滤光后的光谱与原始光谱的对比，对于530nm-570nm的滤光相对明显，但是提高显色指数的幅度仍有限。例如下表1所示，对于Ra＝73.3的白光，比较滤光组件提高至Ra＝86.4，达不到90。In order to verify the effect of the embodiment of the present application, for example, the color rendering index Ra of the white light emitted by the light source 11 used in the present implementation is Ra = 73.3, and the color temperature is CCT = 8000k. A comparative filter component is selected, and its filtering wavelength is between 510nm-600nm. In the meantime, the minimum transmittance of the transmittance curve is 48% -52%, and the minimum transmittance is about 555nm. The ratio of the half-peak width to the peak width of the transmittance curve is about 0.45, as shown in Figure 4. Transmission curve. The inventor found during the experiment that no matter how to expand the filter range of the transmittance curve and how to change the position of the minimum transmittance of the transmittance curve, the modulated white light can not obtain more than 90. The color rendering index, as shown in the spectral comparison chart shown in Figure 5, actually compares the comparison between the filtered spectrum of the filter module and the original spectrum, which is relatively obvious for the filter of 530nm-570nm, but the amplitude of the color rendering index is increased. Still limited. For example, as shown in Table 1 below, for white light with Ra = 73.3, the comparison filter component is raised to Ra = 86.4, which is less than 90.
而采用本实施例的滤光组件12的透过率曲线参见图2，以及滤光前后的光谱对比图参见图3，由图3可以很明确知道，经滤光组件12同时对波长在430-460nm和波长在510-635nm这两个不同的波段的光进行滤光而透过的白光，由于该两个波段的滤光的协同作用，使得滤光后的白光的光谱趋近于高显示指数的光源的光谱，对应图3中的线条2和线条3，从而可以获得较高的显色指数。当然，在本实施例中，图2所示的透过率曲线仅是一个举例，并不唯一，图3的光谱对比图也并不唯一。本实施例的滤光组件12和比较滤光组件的滤光效果对比如下表1。The transmittance curve of the filter element 12 using this embodiment is shown in FIG. 2, and the spectral comparison chart before and after filtering is shown in FIG. 3. It can be clearly known from FIG. 460nm and 510-635nm light in two different wavelength bands are filtered and transmitted through white light. Due to the synergy of the two bands of filtering, the spectrum of filtered white light approaches a high display index. The spectrum of the light source corresponds to line 2 and line 3 in FIG. 3, so that a higher color rendering index can be obtained. Of course, in this embodiment, the transmittance curve shown in FIG. 2 is only an example, and is not unique, and the spectrum comparison chart of FIG. 3 is not unique. The comparison of the filtering effect between the filter element 12 of this embodiment and the comparative filter element is shown in Table 1 below.
实际上，本实施例选取的比较滤光组件的透过率曲线也大致呈尖峰型，但提高显色指数的效果要比前面提及的现有技术常用的传统的尖峰型透过率曲线的方式要出色，然而仍无法将低显色指数例如Ra＝73.3的提高至Ra＝90以上，使得LED照明装置的使用场景受到极大的限制，无法满足专业舞台灯场景的需求。In fact, the transmittance curve of the comparative filter element selected in this embodiment is also roughly a peak shape, but the effect of improving the color rendering index is greater than that of the traditional peak transmittance curve commonly used in the prior art mentioned above. The method is excellent, however, it is still unable to increase the low color rendering index, such as Ra = 73.3, to Ra = 90 or more, which makes the use scene of the LED lighting device greatly restricted and cannot meet the needs of professional stage light scenes.
表1 滤光效果对比表Table 1 Comparison of filtering effects
Figure PCTCN2019076628-appb-000001
Figure PCTCN2019076628-appb-000001
参阅图1，在本实施例中，LED照明装置进一步包括驱动组件13，例如驱动电机。驱动组件13用于带动滤光组件12运动，以在需要对白光进行滤光时带动滤光组件12进入白光的出光路径中和不需要对白光进行滤光时带动滤光组件12离开白光的出光路径，如此可以使得滤光组件12可选择地设置在出光路径中。Referring to FIG. 1, in this embodiment, the LED lighting device further includes a driving component 13, such as a driving motor. The driving component 13 is used to drive the filter component 12 to move, so as to drive the filter component 12 into the white light exit path when white light needs to be filtered and to drive the filter component 12 to leave the white light when no white light is required to be filtered Path, so that the filter assembly 12 can be selectively arranged in the light exit path.
例如在其他实施例中，LED照明装置进一步包括轨道(图未示)，滤光组件12滑动设置在轨道上，驱动组件13驱动滤光组件12在轨道上运动，以在以在需要对白光进行滤光时带动滤光组件12进入白光的出光路径中和不需要对白光进行滤光时带动滤光组件12离开白光的出光路径。For example, in other embodiments, the LED lighting device further includes a track (not shown), the filter assembly 12 is slidably disposed on the track, and the driving assembly 13 drives the filter assembly 12 to move on the track, so as to perform white light on demand. When filtering, the filter component 12 is driven into the white light output path and when the white light does not need to be filtered, the filter component 12 is driven to leave the white light output path.
参阅图1，在本实施例中，装置进一步包括支架14，滤光组件12设置于支架14上，驱动组件13用于驱动支架14旋转，以带动滤光组件12运动。Referring to FIG. 1, in this embodiment, the device further includes a bracket 14, the filter assembly 12 is disposed on the bracket 14, and the driving assembly 13 is used to drive the bracket 14 to rotate to drive the filter assembly 12 to move.
参阅图1和图6，例如支架14包括一旋转轴141，例如图1中示出的旋转轴141，基板122的一角部与旋转轴141连接，驱动组件13驱动旋转轴141旋转，其中，基板122的旋转轨迹构成的旋转平面与出光路径平行或大致平行。1 and 6, for example, the bracket 14 includes a rotation shaft 141, such as the rotation shaft 141 shown in FIG. 1. A corner portion of the substrate 122 is connected to the rotation shaft 141, and the driving component 13 drives the rotation shaft 141 to rotate. The rotation plane formed by the rotation trajectory of 122 is parallel or substantially parallel to the light exit path.
又例如图7，支架14设置在滤光组件12一侧边，支架14能够在垂直出光路径的平面上转动，以能够带动基板122在垂直于出光路径的方向上转动。For another example, in FIG. 7, the bracket 14 is disposed on one side of the filter assembly 12, and the bracket 14 can be rotated on a plane perpendicular to the light output path to drive the substrate 122 to rotate in a direction perpendicular to the light output path.
参阅图8，在本实施例中，装置进一步包括壳体15、图案片16、灯罩17，光源11和滤光组件12分别设置于壳体15内，图案片16设置于壳体15内，且在白光的出光路径上位于光源11与滤光组件12之间，或者在白光的出光路径上位于滤光组件12远离光源11的一侧，灯罩17罩设在壳体15上。图案片16，又称GOBO面，其上设置有图案，在光源11的照射下能够通过白光将其图案投射出来，以满足不同场景的需要。Referring to FIG. 8, in this embodiment, the device further includes a casing 15, a pattern sheet 16, and a lamp cover 17. The light source 11 and the filter assembly 12 are respectively disposed in the casing 15, and the pattern sheet 16 is disposed in the casing 15, and The white light exit path is located between the light source 11 and the filter assembly 12, or the white light exit path is located on the side of the filter assembly 12 away from the light source 11, and the lamp cover 17 is covered on the housing 15. The pattern sheet 16, also called a GOBO surface, is provided with a pattern, and can be projected by white light under the illumination of the light source 11 to meet the needs of different scenes.
综上所述，本申请经过长期研究验证，通过将滤光组件12的镀膜层121设置成对波长在510nm-635nm范围内的光进行滤光，以降低波长 在510nm-635nm范围的光在光谱中的比例，能够突破现有技术显色指数提高的瓶颈，更加有效提高滤光后的白光的显色指数，同时由于降低波长在510nm-635nm范围的光在光谱中的比例会导致滤光后的白光的色温发生变化，为了平衡滤光后的白光的色温且进一步提高显色指数，在本实施例中再将镀膜层121进一步设置成对波长在430nm-460nm范围的光进行滤光，降低波长在430nm-460nm的光在光谱中的比例，如此能够保持滤光后的白光的色温相对于原始白光保持稳定的同时，进一步提高白光的显色指数，解决现有LED灯显色指数不高，现有的显色指数提高技术中，无法有效提高显色指数，使得现有的LED灯无法具备多种用途的技术问题。In summary, this application has been verified through long-term research. By setting the coating layer 121 of the filter element 12 to filter light with a wavelength in the range of 510nm-635nm, the spectrum of light with a wavelength in the range of 510nm-635nm is reduced. It can break through the bottleneck of the improvement of the color rendering index of the prior art, and more effectively increase the color rendering index of white light after filtering. At the same time, reducing the proportion of light in the spectrum in the wavelength range of 510nm-635nm will cause the The color temperature of the white light changes. In order to balance the color temperature of the white light after filtering and to further improve the color rendering index, in this embodiment, the coating layer 121 is further set to filter light having a wavelength in the range of 430nm-460nm to reduce The proportion of light with a wavelength between 430nm and 460nm in the spectrum can maintain the color temperature of the filtered white light relative to the original white light while maintaining the color rendering index of the white light to further improve the color rendering index of existing LED lamps. In the existing color rendering index improving technology, the color rendering index cannot be effectively improved, so that the existing LED lamp cannot have the technical problems of multiple uses.
以上所述仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。The above are only examples of the present application, and thus do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the application, or directly or indirectly applied to other related technologies The fields are equally included in the patent protection scope of this application.

Claims (10)

  1. 一种LED照明装置，其特征在于，包括：An LED lighting device, comprising:
    光源，用于出射白光；Light source for emitting white light;
    滤光组件，可选择性地设置于所述白光的出光路径上，其中当所述滤光组件设置在所述白光的出光路径上时用于对所述白光进行滤光，以提高所述白光的显色指数；A filter component may be selectively disposed on a light output path of the white light, and when the filter component is disposed on the light output path of the white light, the filter component is configured to filter the white light to improve the white light Color rendering index
    其中，所述滤光组件包括基板和镀膜层，所述镀膜层设置于所述基板一侧，所述镀膜层设置成至少对所述白光中的波长在430nm-460nm和波长在510nm-635nm的光进行滤光。The filter assembly includes a substrate and a coating layer. The coating layer is disposed on one side of the substrate, and the coating layer is disposed at least for wavelengths of 430 nm to 460 nm and wavelengths of 510 nm to 635 nm in the white light. The light is filtered.
  2. 根据权利要求1所述的装置，其特征在于：所述镀膜层设置于所述基板邻近所述光源的一侧面。The device according to claim 1, wherein the coating layer is disposed on a side of the substrate adjacent to the light source.
  3. 根据权利要求1所述的装置，其特征在于：所述镀膜层的透过率曲线在波长为510nm～635nm范围内的最小透过率为48％～52％。The device according to claim 1, wherein a minimum transmittance of the transmittance curve of the coating layer in a wavelength range of 510nm to 635nm is 48% to 52%.
  4. 根据权利要求3所述的装置，其特征在于：所述镀膜层的透过率曲线的半峰宽与峰宽的比值为0.7-0.9。The device according to claim 3, wherein a ratio of a half-peak width to a peak width of a transmittance curve of the coating layer is 0.7-0.9.
  5. 根据权利要求1所述的装置，其特征在于：所述镀膜层的透过率曲线在波长为450nm处透过率最小。The device according to claim 1, wherein the transmittance curve of the coating layer has a minimum transmittance at a wavelength of 450 nm.
  6. 根据权利要求5所述的装置，其特征在于：所述镀膜层的透过率曲线在波长为450nm时的透过率为38％-41％。The device according to claim 5, wherein the transmittance curve of the coating layer has a transmittance of 38% to 41% at a wavelength of 450nm.
  7. 根据权利要求1所述的装置，其特征在于：所述装置进一步包括驱动组件，用于带动所述滤光组件运动，以进入或远离所述白光的出光路径。The device according to claim 1, wherein the device further comprises a driving component for driving the filter component to move into or away from the light output path of the white light.
  8. 根据权利要求7所述的装置，其特征在于：所述装置进一步包括支架，所述滤光组件设置于所述支架上，所述驱动组件用于驱动所述支架旋转，以带动所述滤光组件运动。The device according to claim 7, wherein the device further comprises a bracket, the filter assembly is disposed on the bracket, and the driving component is used for driving the bracket to rotate to drive the filter Component movement.
  9. 根据权利要求1至8中任一项所述的装置，其特征在于：所述光源包括蓝色LED芯片和黄光荧光粉，所述蓝色LED芯片激发所述黄光荧光粉以实现所述白光。The device according to any one of claims 1 to 8, wherein the light source comprises a blue LED chip and a yellow light phosphor, and the blue LED chip excites the yellow light phosphor to realize the light source. White light.
  10. 根据权利要求1所述的装置，其特征在于：所述装置进一步包括壳体、图案片、灯罩，所述光源和所述滤光组件分别设置于所述壳体内，所述图案片设置于所述壳体内，且在所述白光的出光路径上位于所述光源与所述滤光组件之间，或者在所述白光的出光路径上位于所述滤光组件远离所述光源的一侧，所述灯罩罩设于所述壳体上。The device according to claim 1, wherein the device further comprises a housing, a pattern sheet, and a lampshade, the light source and the filter assembly are respectively disposed in the case, and the pattern sheet is disposed in the Inside the housing, and located between the light source and the filter assembly on the white light exit path, or located on the side of the filter assembly remote from the light source on the white exit path, The lampshade cover is disposed on the casing.
PCT/CN2019/076628 2018-07-25 2019-03-01 Led lighting device WO2020019713A1 (en)

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CN208535741U (en) * 2018-07-25 2019-02-22 深圳市绎立锐光科技开发有限公司 A kind of LED light device
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