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WO2017050194A1 - 照明装置 - Google Patents

照明装置 Download PDF

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Publication number
WO2017050194A1
WO2017050194A1 PCT/CN2016/099300 CN2016099300W WO2017050194A1 WO 2017050194 A1 WO2017050194 A1 WO 2017050194A1 CN 2016099300 W CN2016099300 W CN 2016099300W WO 2017050194 A1 WO2017050194 A1 WO 2017050194A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
distribution
illumination device
light distribution
Prior art date
Application number
PCT/CN2016/099300
Other languages
English (en)
French (fr)
Inventor
王婷婷
龙奇
方敏
高鸿磊
秦蜀懿
Original Assignee
通用电气照明解决方案有限公司
王婷婷
龙奇
方敏
高鸿磊
秦蜀懿
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 通用电气照明解决方案有限公司, 王婷婷, 龙奇, 方敏, 高鸿磊, 秦蜀懿 filed Critical 通用电气照明解决方案有限公司
Priority to CA2998871A priority Critical patent/CA2998871A1/en
Priority to US15/756,726 priority patent/US10781995B2/en
Priority to MX2018003545A priority patent/MX2018003545A/es
Publication of WO2017050194A1 publication Critical patent/WO2017050194A1/zh

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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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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
    • F21Y2113/00—Combination of light sources
    • 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 lighting technologies, and in particular, to a lighting device.
  • the light distribution provided by the light source is typically constant. However, in order to meet different lighting needs, it is desirable to provide lighting devices with various light distributions. To this end, in order to provide a variety of light distributions, it is necessary in the prior art to use additional optical elements other than the light source, such as lenses, reflectors, diffusers, etc., to change the optical path of the light emitted from the source.
  • Cide Application Publication No. CN101438096 which comprises: a lighting device comprising a light source; and an electromotive force disposed in front of the light source to allow refraction of a light beam emitted from the light source Wet optical element; a drive device arranged to operate the optical element between at least two predetermined states, the state being adapted to cause a refracted beam having a different light intensity distribution.
  • an embodiment of the invention relates to a lighting device, comprising: a support member; at least one first light source on the support member and at least one second light source on the support member; Wherein the first light source has a first light distribution, the second light source has a second light distribution, and the first light distribution and the second light distribution are different.
  • FIG. 1 is a schematic structural view of a lighting device according to an embodiment of the present invention.
  • Figure 2 is a schematic diagram of an ideal Lambertian distribution
  • Figure 3 is a schematic view of the distribution of batwings
  • FIG. 4 is a schematic diagram of corresponding light distribution of a lighting device under various current intensity ratios according to an embodiment of the present invention
  • Figure 5 is a schematic diagram of relative luminous flux as a function of forward current
  • Figure 6 is a schematic diagram showing a linear fit to the relative luminous flux curve shown in Figure 5;
  • FIG. 7 is a schematic diagram of light distribution of a lighting device under a plurality of light source ratios according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a lighting device according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a lighting device according to still another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a lighting device according to still another embodiment of the present invention.
  • Figure 11 is a schematic illustration of an example beam centerline.
  • references to "some embodiments” and the like in the specification of the present application are intended to mean that a particular element (e.g., feature, structure and/or feature) associated with the present invention is included in at least one of the embodiments described herein. In the examples, it may or may not be present in other embodiments. Additionally, it is to be understood that the inventive elements may be combined in any suitable manner.
  • FIG. 1 shows an embodiment of a lighting device 100.
  • the lighting device 100 includes a support member 103, at least one first light source 101 and at least one second light source 102 disposed on the support member 103.
  • the support member 103 is mainly used to support the first light source 101 and the second light source 102. In some embodiments, the relative position between the first light source 101 and the second light source 102 is fixed by the support member 103. In some embodiments, the first light source 101 and the second light source 102 are disposed on the support member 103, but the relative position between the first light source 101 and the second light source 102 can be adjusted.
  • the support member 103 may include any component that can be used to support the first light source 101 and the second light source 102; for example, a panel capable of fixing the first light source 101 and the second light source 102 or any other that may be the first light source 101 and the second light source 102 sets the components and the like thereon.
  • the first light source 101 and the second light source 102 include any element that can serve as a light source.
  • the first source 101 and the second source 102 are integrated into one lamp.
  • the first light source 101 and the second light source 102 each comprise a complete LED, such as a packaged LED or the like;
  • the first light source 101 and the second light source 102 do not only include a PN junction, such as the first light source 101 being a packaged LED having a first light distribution, and the second light source 102 having a second light distribution The packaged LED.
  • the first light source 101 has a first light distribution
  • the second light source 102 has a second light distribution
  • the first light distribution and the second light distribution are different.
  • the "light distribution” may also be referred to as “light intensity distribution”, which indicates the luminous intensity value of light in all directions of space.
  • the first light distribution comprises a narrow beam angular distribution and the second light distribution comprises a wide beam angular distribution.
  • the beam centerline passes through the source and is perpendicular to the plane of illumination of the source.
  • Figure 11 shows a simple example of the beam centerline, where 501 represents the source, 502 represents the plane of illumination, and 503 represents the centerline of the beam. Figure 11 is only used to better illustrate the beam centerline and should not be construed as limiting the concept of the beam centerline. system.
  • the first light distribution includes a Lambertian distribution.
  • the first light source 101 can include any light source having a Lambertian distribution, such as a Lambertian LED or the like.
  • Figure 2 shows an example of an ideal Lambertian distribution using a polar coordinate system in which the polar angle represents the radiation angle and the polar diameter represents the relative intensity.
  • the "Lambertian distribution" in the present invention is not limited to the ideal Lambertian distribution, but also includes a near Lambertian distribution close to the ideal Lambertian distribution.
  • the narrow beam angular distribution is not limited to the Lambertian distribution; as an example, the narrow beam angular distribution may include a light distribution whose arbitrary beam angle is less than or equal to a set angle, and the set angle may be about 120 degrees. It can also be other angles.
  • the second light distribution includes a bat-wing distribution, which may also be referred to as a butterfly wing distribution.
  • the second light source 102 can include any light source having a batwing distribution, such as an LED using a flip chip.
  • Figure 3 shows an example of an asymmetric batwing distribution using a polar coordinate system, where the polar angle represents the radiation angle and the polar diameter represents the relative intensity; the "asymmetric batwing distribution" represents the batwing distribution
  • the light distribution on a plurality of planes including the center line of the beam may be different; in Fig. 3, ⁇ and ⁇ represent light distributions on two planes perpendicular to each other including the center line of the beam.
  • the batwing distribution has a wider beam angle than the Lambertian distribution.
  • the "batwing distribution" herein is not limited to the light distribution shown in FIG. 3, for example, the batwing distribution may be a symmetric light distribution, and the shape of the batwing distribution curve may be different from that shown in FIG. .
  • the wide beam angular distribution is not limited to the batwing distribution; as an example, the wide beam angular distribution may include a light distribution having an arbitrary beam angle greater than the aforementioned set angle.
  • modulation of the light distribution of the illumination device 100 can be achieved without using optical elements such as lenses, reflectors, diffusers, and the like.
  • the ratio of the light output intensity between the first light source 101 and the second light source 102 can be set by setting the ratio of the current intensity supplied to the first light source 101 and the second light source 102.
  • FIG 4 shows the corresponding light distribution of the illumination device 100 at different current intensity ratios between the first source 101 and the second source 102 in a Cartesian coordinate system.
  • the light distribution 11 represents the Lambertian distribution of the first light source 101
  • the light distribution 12 represents the second.
  • the light distribution 13 represents the light distribution of the illuminating device 100 in the case where the current intensity ratio of the first light source 101 and the second light source 102 is 1:1
  • the light distribution 14 represents the first light source 101 and
  • the light intensity distribution of the illumination device 100 in the case where the current intensity ratio of the second light source 102 is 1:3
  • the light distribution 15 indicates the illumination device 100 in the case where the current intensity ratio of the first light source 101 and the second light source 102 is 1:5.
  • the light distribution 16 indicates the light distribution of the illumination device 100 in the case where the current intensity ratio of the first light source 101 and the second light source 102 is 1:8.
  • the light distribution of the illumination device 100 also changes accordingly.
  • Figure 5 shows a schematic diagram of the relative luminous flux of the LED as a forward current at room temperature of about 25 degrees in a Cartesian coordinate system.
  • the relative luminous flux represents the ratio between the luminous flux of the LED when other currents are supplied and the luminous flux of the LED when the rated current is supplied at about 25 degrees at room temperature. Among them, it can be defined that the luminous flux of the LED is 1 when the rated current is supplied at room temperature of about 25 degrees.
  • Fig. 6 shows the result of linear fitting of the curve shown in Fig. 5 in a Cartesian coordinate system.
  • the broken line in Fig. 6 indicates a partial point in the curve shown in Fig. 5, and the solid line in Fig. 6 indicates the result of linear fitting on the point indicated by the broken line.
  • the relative luminous flux can be approximately considered to increase linearly with the increase of the forward current. Therefore, by using this characteristic, the current intensity ratio that can be used between the first light source 101 and the second light source 102 can be set according to actual needs, and is not limited to the specific value shown in FIG.
  • the ratio of the light output intensity between the first light source 101 and the second light source 102 can be set by setting the ratio between the first light source 101 and the second light source 102. That is, in the present embodiment, the number of the first light sources 101 and/or the second light sources 102 may be plural (not shown). It should be noted that the plurality of first light sources 101 have the same or similar light distribution, but the packages between the plurality of first light sources 101 may be different; similarly, the plurality of second light sources 102 have the same or similar light distribution, However, the package between the plurality of second light sources 102 may be different.
  • FIG. 7 shows a light distribution of the illumination device 100 at a different ratio of the number of light sources between the first light source 101 and the second light source 102 in a Cartesian coordinate system; wherein the current intensity supplied to the first light source 101 and the second light source 102 is the same .
  • the light distribution 21 represents the batwing distribution of the second light source 102
  • the light distribution 22 represents the Lambertian distribution of the first light source 101
  • the light distribution 23 represents the ratio of the number of light sources between the first light source 101 and the second light source 102.
  • the light distribution of the illumination device 100 at 1:1 the light distribution 24 represents the first light source 101 and The light source distribution of the illumination device 100 when the ratio of the number of light sources between the second light sources 102 is 1:2
  • the light distribution 25 indicates that the ratio of the number of light sources between the first light source 101 and the second light source 102 is 1:5.
  • the light distribution, light distribution 26 represents the light distribution of the illumination device 100 when the ratio of the number of light sources between the first light source 101 and the second light source 102 is 1:10.
  • the ratio of the current intensity supplied is the same, as the ratio of the number of light sources between the first light source 101 and the second light source 102 changes, the light distribution of the illumination device 100 also changes accordingly.
  • the ratio of the number of light sources between the first light source 101 and the second light source 102 can be completely set according to actual needs, and is not limited to the specific numerical values shown in FIG. Also, the ratio of the number of light sources between the first light source 101 and the second light source 102 and the current intensity ratio provided to both can be simultaneously set to better obtain the desired light distribution of the illumination device 100.
  • the illumination device 100 does not have a lamp cover or does not have a lamp cover that affects the light distribution, in which case the light distribution of the illumination device 100 can be directly based on the relationship between the first light distribution and the second light distribution.
  • the light output intensity ratio is formed, that is, the light distribution of the illumination device 100 is only related to the light output intensity ratio between the first light source 101 and the second light source 102.
  • the illumination device 100 may not include any such as a lens, a reflector, a diffusion plate, etc., mainly for changing the light distribution.
  • optical elements or mainly used to change the optical path
  • FIG. 8 illustrates one embodiment of a lighting device 200.
  • the lighting device 200 includes a support member 203, at least one first light source 201 and at least one second light source 202 disposed on the support member 203, and a lamp cover 204.
  • the support member 203, the first light source 201, and the second light source 202 are similar to the support member 103, the first light source 101, and the second light source 102 in FIG. 1, respectively, and are not described herein again.
  • the first light source 102 and the second light source 202 are disposed within the globe 204.
  • the lampshade 204 can be used primarily for aesthetic decoration, dust protection, direct contact with light sources, light fogging, and the like. It should be noted that although the lamp cover 204 may have a certain influence on the light distribution of the illumination device 200, the main function of the lamp cover 204 is not to adjust the illumination device 200. Light distribution.
  • the light distribution of the illumination device 200 can be formed directly based on the optical characteristics of the shade 204, the light output intensity ratio between the first light distribution and the second light distribution; That is, in the embodiment in which the lamp cover 204 affects the light distribution of the illumination device 200, the light distribution of the illumination device 200 can be directly based on the optical characteristics of the lamp cover 204, the light output intensity ratio between the first light source 201 and the second light source 202. form.
  • the optical characteristics of the lamp cover 204 mainly include characteristics of the lamp cover 204 that affect the optical path, including but not limited to: refractive, transmission, reflection characteristics, and the like of the lamp cover 204.
  • This embodiment does not require any optical elements (such as lenses, reflectors, diffusers, etc.) that are mainly used to adjust the light distribution independently of the light source, and can also obtain the illumination device 200 having a diversified light distribution, thereby reducing illumination.
  • the cost of the device does not require any optical elements (such as lenses, reflectors, diffusers, etc.) that are mainly used to adjust the light distribution independently of the light source, and can also obtain the illumination device 200 having a diversified light distribution, thereby reducing illumination. The cost of the device.
  • FIG. 9 shows another embodiment of a lighting device 300.
  • the illumination device 300 includes a support member 303, four first light sources 301, six second light sources 302, and an adjustment member 305.
  • the dashed box in FIG. 9 is only used to identify the first light source 301 and the second light source 302.
  • the support member 303, the first light source 301, and the second light source 302 are similar to the support member 303, the first light source 301, and the second light source 302, respectively, and are not described herein again.
  • Adjustment component 305 can be used to adjust the light output intensity corresponding to a light distribution. For example, adjusting the light output intensity corresponding to the first light distribution (ie, the total light output intensity of the first light source 301), and/or adjusting the light output intensity corresponding to the second light distribution (ie, the total light of the second light source 302) Output intensity).
  • the adjustment component 305 effects adjustment of the light output intensity corresponding to the first light distribution and/or the second light distribution by adjusting the intensity of the current provided to the first light source 301 and/or the second light source 302.
  • the adjustment component 305 is electrically coupled to the first light source 301 and/or the second light source 302 to vary the intensity of the current provided to the first source 301 and/or the second source 302.
  • the adjustment component 305 includes, but is not limited to, a variable resistor, a dimmer, etc.; the dimmer includes, but is not limited to, a 0-10V dimmer, a Digital Addressable Lighting Interface (DALI) dimmer , wireless dimmers, etc.
  • DALI Digital Addressable Lighting Interface
  • the adjustment component 305 achieves a light output intensity corresponding to the first light distribution and/or the second light distribution by adjusting the number of first light sources 301 and/or second light sources 302 that have actual contributions to illumination. Adjustment.
  • the adjustment component 305 is electrically coupled to the first light source 301 and/or the second light source 302 to control the conduction or disconnection of current supplied to at least one of the first light sources 301 and/or at least one of the second light sources 302. Break and so on.
  • the adjustment component 305 includes, but is not limited to, a switching circuit, a relay, or the like.
  • manual adjustment of the adjustment component 305 is required, in which case at least a portion of the adjustment component 305 is exposed to the surface of the illumination device 300 for manual operation.
  • the adjustment component 305 can be remotely controlled, in which case the adjustment component 305 can all be hidden inside the illumination device 300 (not shown).
  • the influence of the position between the first light source 301 and the second light source 302 on the light distribution can be ignored as compared with the effect of the ratio of the light output intensity between the first light source 301 and the second light source 302, therefore, the first The position of the light source 301 and the second light source 302 in the illumination device 300 can be completely adjusted, and is not limited to that shown in FIG.
  • the user can adjust the light distribution of the illumination device 300 as needed.
  • the illumination device 400 includes a support member 403, a first light source 401, a second light source 402, and a light cover including an inner cover 414 and a housing 424.
  • the support member 403, the first light source 401, and the second light source 402 are similar to the support member 103, the first light source 101, and the second light source 102 in FIG. 1, respectively, and are not described herein again.
  • the circular dashed box of FIG. 10 shows the support member 403 located within the inner cover 414 and the first light source 401 and the second light source 402 disposed on the support member 403.
  • the first light source 401 and the second light source 402 are both LED lights.
  • the light distribution of LEDs is more pronounced as the angle of radiation changes. Therefore, in general, when an LED is used as a light source, when an LED is used as a light source, if an additional optical element is not used to change the light distribution of the light source, the outer casing 424 of the illumination device 400 is difficult to be sufficiently illuminated, affecting the illumination device. 400 lighting effects and aesthetics.
  • the ratio of the light output intensity between the second light sources 402 of the first light source 401 it is possible to use the LED as the light source while the optical component such as a lens, a reflector, a diffusion plate, or the like is not used. 424 is fully illuminated.
  • the illumination device of the present invention may further include other light sources different from the light distributions of the first light source and the second light source.
  • modulation of the light distribution of the illumination device can be achieved by providing a light output intensity corresponding to at least one of the light distributions.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

一种照明装置（100），包括：支撑部件（103）；位于支撑部件（103）上的至少一个第一光源（101）以及位于支撑部件（103）上的至少一个第二光源（102）；其中，第一光源（101）具有第一光分布，第二光源（102）具有第二光分布，且第一光分布和第二光分布不同。

Description

照明装置 技术领域
本发明涉及照明技术领域，尤其涉及一种照明装置。
背景技术
光源提供的光分布通常是恒定的。然而，为了满足不同的照明需求，需要提供具有各种光分布的照明设备。为此，为了提供多样化的光分布，现有技术中必须采用独立于光源之外的额外光学元件，如透镜、反射器、扩散板等，改变从光源发射出的光的光路。
公开号为CN101438096的中国专利申请提供了上述现有技术的一种具体实现方案，包括：一种照明设备，其包括光源；设置在光源前面以允许从所述光源发射的光束折射的基于电润湿的光学元件；驱动装置，该驱动装置设置为在至少两个预定状态之间操作所述光学元件，所述状态适合于导致具有不同光强分布的折射光束。
然而，这种额外的光学元件往往价格较为昂贵，提高了整个照明设备的成本。
因此，需要新的能够提供多样化光分布的照明设备。
发明内容
本发明的目的是提供一种照明装置。
在一个方面，本发明的实施例涉及一种照明装置，其特征在于，包括：支撑部件；位于所述支撑部件上的至少一个第一光源以及位于所述支撑部件上的至少一个第二光源；其中，所述第一光源具有第一光分布，所述第二光源具有第二光分布，且所述第一光分布和所述第二光分布不同。
附图说明
参考附图阅读下面的详细描述，可以帮助理解本发明的特征、方面及优 点，其中：
图1为本发明一个实施例所涉及的照明装置的结构示意图；
图2为理想朗伯分布的一个示意图；
图3为蝠翼分布的一个示意图；
图4为本发明一个实施例所涉及的多种电流强度比例下照明装置的相应光分布示意图；
图5为随正向电流变化的相对光通量的示意图；
图6为对图5所示的相对光通量曲线进行线性拟合的示意图；
图7为本发明一个实施例所涉及的多种光源数量比例下照明装置的光分布示意图；
图8为本发明另一个实施例所涉及的照明装置的结构示意图；
图9为本发明再一个实施例所涉及的照明装置的结构示意图；
图10为本发明又一个实施例所涉及的照明装置的结构示意图；
图11为一个示例的光束中心线的示意图。
具体实施方式
本申请中使用的“包括”、“包含”、或“具有”以及类似的词语是指除了列于其后的项目及其等同物外，其他的项目也可在范围以内。本申请中的近似用语用来修饰数量，表示本发明并不限定于所述具体数量，还包括与所述数量接近的、可接受的、不会导致相关基本功能的改变的修正的部分。相应的，用“约”等修饰一个数值，意为本发明不限于所述精确数值。在某些实施例中，近似用语可能对应于测量数值的仪器的精度。
在说明书和权利要求中，除非清楚地另外指出，所有项目的单复数不加以限制。本发明专利申请说明书以及权利要求书中使用的“第一”、“第二”、以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的材料或实施例等。
除非上下文另外清楚地说明，术语“或”、“或者”并不意味着排他，而是指存在提及项目(例如成分)中的至少一个，并且包括提及项目的组合可以存在的情况。
本申请说明书中提及“一些实施例”等等，表示所述与本发明相关的一种特定要素(例如特征、结构和/或特点)被包含在本说明书所述的至少一个实 施例中，可能或不可能出现于其他实施例中。另外，需要理解的是，所述发明要素可以任何适合的方式结合。
以下根据附图说明本发明的实施方式，下文中可能不会详细描述众所周知的功能和结构，以避免因不必要的细节而使本发明变得令人费解。
图1示出了照明装置100的一个实施例。该照明装置100包括支撑部件103、设置在支撑部件103上的至少一个第一光源101和至少一个第二光源102。
支撑部件103主要用于支撑第一光源101和第二光源102。在一些实施例中，第一光源101和第二光源102之间的相对位置被支撑部件103固定。在一些实施例中，第一光源101和第二光源102设置在支撑部件103上，但第一光源101和第二光源102之间的相对位置可以被调整。支撑部件103可以包括任何能够用于支撑第一光源101和第二光源102的部件；例如，能够固定第一光源101和第二光源102的面板或其他任何可以将第一光源101和第二光源102设置在其上的部件等。
第一光源101和第二光源102包括任何可作为发光源的元件。在一些实施例中，第一光源101和第二光源102集成为一个灯。
在基于发光二极管(light-emitting diode，以下简称“LED”)实现照明装置100的一些实施例中，第一光源101和第二光源102各自包括完整的LED，如已封装的LED等；也即，第一光源101和第二光源102并非仅包含发光的PN结(PN junction)，如第一光源101为具有第一光分布的已封装的LED，且第二光源102为具有第二光分布的已封装的LED。
第一光源101具有第一光分布，第二光源102具有第二光分布，且第一光分布和第二光分布不同。其中，“光分布”也可称为“光强分布”，表示光在空间各方向上的发光强度值。
在一些实施例中，第一光分布包括窄光束角分布，第二光分布包括宽光束角分布。其中，光束角(beam angle)表示垂直光束中心线的平面上，光强度等于N％最大光强度的二个方向之间的夹角；在一些实施例中，N＝50；在一些实施例中，N＝10；在一些实施例中，N可根据照明需求调整。通常，光束中心线通过光源，且垂直于光源的发光平面。图11示出了光束中心线的一个简单示例，其中，501表示光源，502表示发光平面，503表示光束中心线。图11仅用于更好地说明光束中心线，而不应理解为对光束中心线的概念的限 制。
作为窄光束角分布的一个示例，第一光分布包括朗伯分布(Lambertian distribution)。相应地，第一光源101可以包括任何具有朗伯分布的光源，如朗伯型LED等。
图2采用极坐标系示出了理想朗伯分布的一个示例，其中，极角表示辐射角，极径表示相对强度。需要说明的是，本发明中的“朗伯分布”并非局限于理想朗伯分布，还包括与理想朗伯分布接近的近朗伯分布。需要说明的是，窄光束角分布不局限于朗伯分布；作为一个示例，窄光束角分布可包括任意光束角小于或等于一设定角度的光分布，该设定角度可以为约120度，也可以为其它角度。
作为宽光束角分布的一个示例，第二光分布包括蝠翼分布(bat-wing distribution)，该蝠翼分布也可称为蝴蝶翼分布。相应地，第二光源102可以包括任何具有蝠翼分布的光源，如采用倒装芯片的LED等。
图3采用极坐标系示出了一种非对称的蝠翼分布的一个示例，其中，极角表示辐射角，极径表示相对强度；所述“非对称的蝠翼分布”表示该蝠翼分布在包含光束中心线的多个平面上的光分布可以不同；图3中，α和β表示包含光束中心线的、互相垂直的两个平面上的光分布。
由图2和图3可见，蝠翼分布相比朗伯分布具有更宽的光束角。需要说明的是，此处的“蝠翼分布”并非局限于图3所示的光分布，如蝠翼分布可以为对称光分布，又如蝠翼分布曲线的形状可以与图3所示不同等。需要说明的是，宽光束角分布不局限于蝠翼分布；作为一个示例，宽光束角分布可包括任意光束角大于前述设定角度的光分布。
通过设置第一光源101和第二光源102之间的光输出强度比例，能够在不使用诸如透镜、反射器、扩散板等光学元件的情况下，实现对照明装置100的光分布的调制。
作为一种实现方式，可通过设置提供给第一光源101和第二光源102的电流强度的比例，来设置第一光源101和第二光源102之间的光输出强度比例。
图4采用直角坐标系示出了在第一光源101和第二光源102之间的不同电流强度比例下照明装置100的相应的光分布。
图4中，光分布11表示第一光源101的朗伯分布，光分布12表示第二 光源102的蝠翼分布，光分布13表示在第一光源101与第二光源102的电流强度比例为1:1的情况下照明装置100的光分布，光分布14表示表示在第一光源101与第二光源102的电流强度比例为1:3的情况下照明装置100的光分布，光分布15表示在第一光源101与第二光源102的电流强度比例为1:5的情况下照明装置100的光分布，光分布16表示在第一光源101与第二光源102的电流强度比例为1:8的情况下照明装置100的光分布。
由图4可见，随着第一光源101和第二光源102之间的电流强度比例的变化，照明装置100的光分布也随之相应改变。
图5采用直角坐标系示出了在室温约25度下LED随正向电流(forward current)变化的相对光通量(relative luminous flux)示意图。该相对光通量表示在室温约25度下，被提供其他电流时LED的光通量与被提供额定电流时LED的光通量之间的比值。其中，可定义在室温约25度下被提供额定电流时，LED的光通量为1。
图6采用直角坐标系示出了对图5所示曲线进行线性拟合的结果。图6中的虚线表示图5所示曲线中的部分点，图6中的实线表示对虚线所示的点进行线性拟合的结果。
由图6可知，相对光通量可被近似地认为随正向电流的增长而线性增长。故借助该特性，第一光源101和第二光源102之间可采用的电流强度比例完全可根据实际需要进行设置，而不局限于图4所示的具体数值。
作为另一种实现方式，可通过设置第一光源101和第二光源102之间的数量比例，来设置第一光源101和第二光源102之间的光输出强度比例。也即，在本实现方式下，第一光源101和/或第二光源102的数量可为多个(未图示)。需要说明的是，多个第一光源101具有相同或相似的光分布，但多个第一光源101之间的封装可能不同；类似的，多个第二光源102具有相同或相似的光分布，但多个第二光源102之间的封装可能不同。
图7采用直角坐标系示出了第一光源101和第二光源102之间的不同光源数量比例下照明装置100的光分布；其中，提供给第一光源101和第二光源102的电流强度相同。
图7中，光分布21表示第二光源102的蝠翼分布，光分布22表示第一光源101的朗伯分布，光分布23表示第一光源101和第二光源102之间的光源数量比例为1:1时照明装置100的光分布，光分布24表示第一光源101和 第二光源102之间的光源数量比例为1:2时照明装置100的光分布，光分布25表示第一光源101和第二光源102之间的光源数量比例为1:5时照明装置100的光分布，光分布26表示第一光源101和第二光源102之间的光源数量比例为1:10时照明装置100的光分布。
由图7可知，在被提供的电流强度比例相同的情况下，随着第一光源101和第二光源102之间的光源数量比例的变化，照明装置100的光分布也随之相应改变。
需要说明的是，本领域技术人员完全能够理解，第一光源101和第二光源102之间的光源数量比例完全可根据实际需要进行设置，而不局限于图7所示的具体数值。并且，可同时设置第一光源101和第二光源102之间的光源数量比例以及提供给两者的电流强度比例，以更好地获得期望的照明装置100的光分布。
在一些实施例中，照明装置100不具有灯罩，或不具有对光分布产生影响的灯罩，在此情况下，照明装置100的光分布可直接基于第一光分布和第二光分布之间的光输出强度比形成，也即，照明装置100的光分布仅与第一光源101和第二光源102之间的光输出强度比有关。
基于上述实施例，无需独立于光源外的任何光学元件(如透镜、反射器、扩散板等)，也能够获得具有多样化光分布的照明装置100，由此，降低了照明装置的成本。尤其是在第一光源101和第二光源102不包含主要用于改变光分布的光学元件的情况下，可在照明装置100不包含任何诸如透镜、反射器、扩散板等主要用于改变光分布(或主要用于改变光路)的光学元件的情况下，实现多样化的光分布。
图8示出了照明装置200的一个实施例。该照明装置200包括支撑部件203、设置在支撑部件203上的至少一个第一光源201和至少一个第二光源202、以及灯罩204。其中，支撑部件203、第一光源201和第二光源202分别与图1中的支撑部件103、第一光源101和第二光源102相似，在此不再赘述。
第一光源102和第二光源202设置在灯罩204内。
在一些实施例中，灯罩204可主要用于美观装饰、防尘、防止人员直接接触光源、灯光雾化等作用。需要说明的是，尽管灯罩204可能对照明装置200的光分布产生一定影响，但灯罩204的主要作用并非调整照明装置200 的光分布。
在灯罩204对照明装置200的光分布产生影响的实施例中，照明装置200的光分布可直接基于灯罩204的光学特性、第一光分布和第二光分布之间的光输出强度比形成；即，在灯罩204对照明装置200的光分布产生影响的实施例中，照明装置200的光分布可直接基于灯罩204的光学特性、第一光源201和第二光源202之间的光输出强度比形成。其中，灯罩204的光学特性主要包括灯罩204对光路产生影响的特性，包括但不限于：灯罩204的折射、透射、反射特性等。
本实施例无需独立于光源外的任何主要用于调整光分布的光学元件(如透镜、反射器、扩散板等)，也能够获得具有多样化光分布的照明装置200，由此，降低了照明装置的成本。
图9示出了照明装置300的另一个实施例。该照明装置300包括支撑部件303、4个第一光源301、6个第二光源302和调整部件305。图9中的虚线框仅用于标识第一光源301和第二光源302。
支撑部件303、第一光源301和第二光源302分别与支撑部件303、第一光源301和第二光源302相似，在此不再赘述。
调整部件305可被用于调整与一种光分布对应的光输出强度。例如，调整第一光分布对应的光输出强度(即第一光源301的总的光输出强度)，和/或，调整第二光分布对应的光输出强度(即第二光源302的总的光输出强度)。
在一些实施例中，调整部件305通过调整提供给第一光源301和/或第二光源302的电流强度，实现对第一光分布和/或第二光分布对应的光输出强度的调整。例如，调整部件305与第一光源301和/或第二光源302电连接，以改变提供给第一光源301和/或第二光源302的电流强度。在该等实施例中，该调整部件305包括但不限于可变电阻、调光器等；调光器包括但不限于0-10V调光器、数字可寻址照明接口(DALI)调光器、无线调光器等。
在一些实施例中，调整部件305通过调整对光照具有实际贡献的第一光源301和/或第二光源302的数量，实现对第一光分布和/或第二光分布对应的光输出强度的调整。例如，调整部件305与第一光源301和/或第二光源302电连接，从而控制提供给第一光源301中的至少一个和/或第二光源302中的至少一个的电流的导通或关断等。在该等实施例中，该调整部件305包括但不限于开关电路、继电器等。
在一些实施例中，需要直接对调整部件305进行手动控制，在此情况下，调整部件305的至少一部分暴露在照明装置300表面，以便手动操作。在一些实施例中，调整部件305可以被遥控，在此情况下，调整部件305可全部隐藏在照明装置300内部(该情况未图示)。
此外，相比第一光源301和第二光源302之间的光输出强度的比例的影响，第一光源301和第二光源302之间的位置对光分布的影响可以被忽略，因此，第一光源301和第二光源302在照明装置300中的位置完全可以被调整，而不局限于图9所示。
基于图9所示实施例，用户可根据需要调整照明装置300的光分布。
图10示出了的照明装置400的另一个实施例。该照明装置400包括支撑部件403、第一光源401、第二光源402、以及包含内罩414和外壳424的灯罩。其中，支撑部件403、第一光源401和第二光源402分别与图1中的支撑部件103、第一光源101和第二光源102相似，在此不再赘述。
图10的圆形虚线框中示出了位于内罩414内的支撑部件403以及设置在支撑部件403上的第一光源401和第二光源402。其中，第一光源401和第二光源402均为LED灯。
相比白炽灯，LED的光分布随辐射角的变化更明显。因而，通常情况下，相比采用白炽灯作为光源，在采用LED作为光源时，若不采用额外的光学元件来改变光源的光分布，照明装置400的外壳424难以被充分照明，影响了照明装置400的照明效果和美观度。而通过设置第一光源401的第二光源402之间的光输出强度的比例，能够在采用LED作为光源的同时，在不使用诸如透镜、反射器、扩散板等光学元件的情况下，使外壳424被充分照明。
需要说明的是，尽管前述多个实施例仅示出了第一光源和第二光源，但本发明的照明装置还可包括与第一光源和第二光源的光分布均不同的其它光源。并且，通过设置至少一种光分布对应的光输出强度，可以实现对照明装置的光分布的调制。
虽然结合特定的实施例对本发明进行了描述，但本领域的技术人员可以理解，对本发明可以作出许多修改和变型。因此，要认识到，权利要求书的意图在于覆盖在本发明真正构思和范围内的所有这些修改和变型。

Claims (10)

  1. 一种照明装置，其特征在于，包括：
    支撑部件；
    位于所述支撑部件上的至少一个第一光源以及位于所述支撑部件上的至少一个第二光源；
    其中，所述第一光源具有第一光分布，所述第二光源具有第二光分布，且所述第一光分布和所述第二光分布不同。
  2. 如权利要求1所述的照明装置，其特征在于，所述照明装置的光分布基于所述第一光分布和所述第二光分布之间的光输出强度比形成。
  3. 如权利要求1所述的照明装置，其特征在于，包括：
    灯罩，其中，所述第一光源和所述第二光源位于所述灯罩内，所述照明装置的光分布基于所述灯罩的光学特性以及所述第一光分布和所述第二光分布之间的光输出强度比形成。
  4. 如权利要求1-3中任一项所述的照明装置，其特征在于，所述第一光分布包括窄光束角分布，所述第二光分布包括宽光束角分布。
  5. 如权利要求4所述的照明装置，其特征在于，所述窄光束角分布包括朗伯分布。
  6. 如权利要求4所述的照明装置，其特征在于，宽光束角分布包括蝠翼分布。
  7. 如权利要求1-3中任一项所述的照明装置，其特征在于，所述第一光源和所述第二光源各自包含已封装的LED。
  8. 如权利要求1-3中任一项所述的照明装置，其特征在于，对应一种光分布的光输出强度是可调的。
  9. 如权利要求8所述的照明装置，其特征在于，所述光输出强度通过改变所对应光分布的光源数量和/或提供给所对应光分布的光源的电流强度进行调整。
  10. 如权利要求1-3中任一项所述的照明装置，其特征在于，所述第一光源和第二光源集成为一个灯。
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US10781995B2 (en) 2020-09-22
CN115539867A (zh) 2022-12-30
MX2018003545A (es) 2018-08-01

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