WO2013017082A1 - Led灯及其光效改善方法 - Google Patents

Led灯及其光效改善方法 Download PDF

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Publication number
WO2013017082A1
WO2013017082A1 PCT/CN2012/079491 CN2012079491W WO2013017082A1 WO 2013017082 A1 WO2013017082 A1 WO 2013017082A1 CN 2012079491 W CN2012079491 W CN 2012079491W WO 2013017082 A1 WO2013017082 A1 WO 2013017082A1
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WIPO (PCT)
Prior art keywords
led lamp
bulb
light
lamp bead
optical treatment
Prior art date
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Ceased
Application number
PCT/CN2012/079491
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English (en)
French (fr)
Inventor
薛信燊
梁有庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Civilight Shenzhen Semiconductor Lighting Co Ltd
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Civilight Shenzhen Semiconductor Lighting Co Ltd
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Application filed by Civilight Shenzhen Semiconductor Lighting Co Ltd filed Critical Civilight Shenzhen Semiconductor Lighting Co Ltd
Priority to EP12819731.6A priority Critical patent/EP2740995A4/en
Priority to US14/236,804 priority patent/US20140168992A1/en
Publication of WO2013017082A1 publication Critical patent/WO2013017082A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/233—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating a spot light distribution, e.g. for substitution of reflector 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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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
    • F21V7/04—Optical design
    • F21V7/048—Optical design with facets structure
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/002—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function
    • 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
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • 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
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
    • 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
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • 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
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like 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 application relates to the field of semiconductor illumination, and more particularly to an LED (Light Emitting) Diode LED) light.
  • LED light sources and LED lamps are widely used in plastics (electroplating processes on the surface) or reflective cups made of aluminum materials, or lenses made of transparent PC and PMMA materials are used for optical processing.
  • the LED lamp designed in the form of a reflective cup or a lens still has a low light-receiving efficiency for the LED lamp bead, and the spot that is irradiated in the case of using the reflective cup is uneven, and is irradiated with a lens. The center of the spot is not high. Directly looking at the LED lights of these two schemes will have a dazzling effect on the human eye.
  • the separate reflector cup and lens will produce uneven light mixing and different color peeling.
  • the main purpose of the present application is to provide an LED lamp with better light effect and a light effect improving method thereof.
  • an LED lamp for improving light efficiency comprising a reflective cup, a bulb, an LED lamp bead and an outer casing; the reflective cup is housed in the outer casing; the LED lamp bead is placed at the bottom of the reflective cup and fixed in the outer casing or The bottom of the reflector cup; the bulb cover is disposed on the LED lamp bead and placed in the reflector cup; the bulb is used for the first optical treatment of the LED lamp bead, and the reflector cup is used for the first optics of the bulb The treated light is treated as a second optical treatment.
  • the present application also proposes a corresponding method for improving the efficacy of the LED lamp, comprising: using a bulb, the cover is placed on the LED lamp bead and placed in the reflective cup; and the first optical treatment is performed by the bulb on the LED lamp bead. The second optical treatment is performed by the reflection cup on the first optical treatment of the blister.
  • the LED lamp of the present application performs the first optical treatment such as light mixing and astigmatism on the initial light output of the LED lamp bead through the functions of refraction, scattering and diffusion of the bulb shell, and forms a three-dimensional surface of the bulb shell.
  • the treatment effect; the reflection cup is used as the second optical treatment, and the scattered light is reflected and light-received into a certain range of angles, and the light of the LED lamp bead is more effectively mixed and then received, thereby improving the light of the lamp.
  • Comfort, and improve the light-receiving efficiency of the lamp so that the lamp is not glare, the light is comfortable, the brightness is improved, and the light mixing is more uniform.
  • the LED lamp of the present application has the same peripheral structure and the like as the LED lamp of the conventional lens structure, can be directly replaced, is easier to produce, and has a low impact on cost.
  • FIG. 1 is a schematic diagram of a combination of LED lamps according to an embodiment of the present application.
  • FIG. 2 is a schematic view showing an assembly of an LED lamp according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an embodiment of a blister according to an embodiment of the present application.
  • FIG. 4 is a second schematic view of a blister embodiment of the embodiment of the present application.
  • Figure 5 is a third schematic view of the embodiment of the blister according to the embodiment of the present application.
  • FIG. 6 is a fourth schematic view of an embodiment of a blister according to an embodiment of the present application.
  • FIG. 7 is a fifth schematic view of an embodiment of a blister according to an embodiment of the present application.
  • Figure 8 is a sixth schematic view of the embodiment of the blister according to the embodiment of the present application.
  • 9-13 are schematic views of different LED lamp bead combination embodiments of the embodiments of the present application.
  • FIG. 1 and FIG. 2 An LED lamp implementation diagram of an embodiment includes a reflective cup 1, a bulb 2, an LED bead 3, a power source 5, and a housing 4, the LED lamp bead 3 being placed at the bottom of the reflector cup 1 and fixed inside the housing.
  • the LED lamp bead 3 is powered by the power source 5, and the reflector cup 1, the bulb 2 and the LED lamp bead 3 are disposed inside the outer casing 4, and the bulb 2 is disposed above the LED lamp bead 3 by refraction, scattering and diffusion.
  • the first optical treatment of the initial light of the LED lamp bead is performed to disperse the light into a three-dimensional surface illumination effect;
  • the reflective cup houses the bulb and serves as a second optical treatment of the LED lamp bead, and the reflective cup 1 disperses the bulb 2
  • the light is reflected and light-received into a certain range of angles, and the LED light bead is more efficiently mixed and then received, thereby improving the light comfort and angle design of the lamp, and improving the light-receiving efficiency of the lamp.
  • the lamps are not glare, the light is comfortable, the brightness is increased, and the light mixing is more uniform.
  • the structure of this example can be directly applied to the LED lamp of the existing structure, and is combined with common accessories of the existing structure, such as an aluminum substrate, a lens, a base, a glass cover (cover) and the like.
  • the specific embodiment of the blister is as shown in FIG. 3 to FIG. 8.
  • the blister can be designed into various shapes as long as it can ensure good mixing and astigmatism effects; for example, as shown in FIG.
  • the shape is a bulb shape; as shown in FIG. 4, the shape of the bulb is a nut shape; as shown in FIG. 5, the shape of the bulb is a straw hat shape, and the top has small protrusions; as shown in FIG. 6, the shape of the bulb is cylindrical. There is a protrusion on the top; as shown in Fig. 7, the shape of the bulb is a candle shape; as shown in Fig. 8, the shape of the bulb is a bulb shape, and the top thereof is provided with a circular depression.
  • the blister can be made of different methods such as glass frosting or dusting or spraying silica gel, or can be made of materials such as PC or PMMA with a transmittance of 80% or more and 100% or less.
  • LED chips for LED lamp beads include: 2 red LED chips and 2 blue LED chips as shown in FIG. 9; 2 as shown in FIG. 10 White LED chip + 2 red LED chips; combinations of different colors as shown in FIGS. 11 and 12; monochromatic LED chips as shown in FIG.
  • the LED bead can be placed directly or indirectly in the reflector cup or housing.
  • the LED lamp of this example can be applied to a lamp such as a spotlight or a bulb lamp, and can also be used on a signal transmitting and collecting instrument such as a camera or a laser, which can be used in different environments and has a wide range of use.

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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)

Abstract

一种LED灯及其光效改善方法，将泡壳（2）罩设于LED灯珠（3）上并置于反射杯（1）内。泡壳（2）用于对LED灯珠（3）发出的光线作第一次光学处理，反射杯（1）用于对经泡壳（2）作第一次光学处理的出光作第二次光学处理。通过泡壳（2）壳体的折射、散射和漫射等作用，对LED灯珠（3）的初次出光进行混光和散光等第一次光学处理，形成泡壳（2）的壳体立体面发光的处理效果；反射杯（1）进行第二次光学处理，将发散的光线进行反射并以一定角度范围的光线射出。

Description

LED灯及其光效改善方法 技术领域
本申请涉及半导体照明领域，更具体地说，涉及一种LED（Light Emitting Diode发光二极管）灯。
背景技术
目前LED光源和LED灯具，广泛使用塑料（表面采用电镀工艺）或者铝材等材料的反射杯，或者采用透明PC、PMMA材料制成的透镜对发出的光进行光学处理。但是无论是反射杯还是透镜的方式设计的LED灯，对LED灯珠的收光效率仍然较低，且在采用反射杯的情况下照射出的光斑不均，而在采用透镜的情况下照射出的光斑中心光强不高。直视这两种方案的LED灯，均会对人眼产生刺眼的效果。同时对多颗LED混光使用时，单独的反射杯和透镜均会产生混光不均、不同颜色剥离的现象。
技术问题
本申请的主要目的是：提供一种光效更佳的LED灯及其光效改善方法。
技术解决方案
为此，本申请提出一种改善光效的LED灯，包括反射杯、泡壳、LED灯珠和外壳；反射杯容纳于外壳内；LED灯珠置于反射杯底部，并固定在外壳内或反射杯底部；泡壳罩设于LED灯珠上并置于反射杯内；泡壳用于对LED灯珠的出光作第一次光学处理，反射杯用于对经泡壳作第一次光学处理的出光作第二次光学处理。
本申请还提出了相应的LED灯的光效改善方法，包括：采用泡壳，罩设于LED灯珠上并置于反射杯内；由泡壳对LED灯珠的出光作第一次光学处理；由反射杯对经泡壳作第一次光学处理的出光作第二次光学处理。
 有益效果
本申请的LED灯，通过泡壳壳体的折射、散射和漫射等作用，对LED灯珠的初次出光进行混光和散光等第一次光学处理，形成泡壳的壳体立体面发光的处理效果；反射杯作为第二次光学处理，将打散的光线进行反射收光成一定角度范围的光线射出，更加有效地对LED灯珠的出光进行混光后再收光，提高灯具的光线舒适度，并提高灯具的收光效率，使灯具不眩光、光线舒适、亮度提升、混光更加均匀。
本申请的LED灯，其外围结构等可以和传统透镜结构的LED灯一致，可以直接替换使用，更易于生产，对成本的影响很低。
 附图说明
图1是本申请实施例的LED灯组合方式示意图；
图2是本申请实施例的LED灯装配实施示意图；
图3是本申请实施例的泡壳实施方式示意图之一；
图4是本申请实施例的泡壳实施方式示意图之二；
图5是本申请实施例的泡壳实施方式示意图之三；
图6是本申请实施例的泡壳实施方式示意图之四；
图7是本申请实施例的泡壳实施方式示意图之五；
图8是本申请实施例的泡壳实施方式示意图之六；
图9-图13是本申请实施例的不同的LED灯珠组合实施方式示意图。
 本发明的最佳实施方式
本发明的实施方式
下面通过具体的实施例并结合附图对本申请作进一步详细的描述 。
如图1和图2所示，为 本申请 一种实施例的LED灯实施图示，包括反射杯1、泡壳2、LED灯珠3、电源5和外壳4，其LED灯珠3置于反射杯1的底部，并固定在外壳内部，通过电源5对LED灯珠3供电，反射杯1、泡壳2和LED灯珠3设置在外壳4内部，泡壳2罩设在LED灯珠3上方，通过折射、散射和漫射等作用，对LED灯珠的初次出光进行第一次光学处理，使光分散为立体面发光效果；反射杯容纳泡壳并作为LED灯珠的第二次光学处理，反射杯1将泡壳2打散的光线进行反射收光成一定角度范围的光线射出，更加有效地对LED灯珠初步出光进行混光后再收光，提高灯具的光线舒适度和角度的设计，并提高灯具的收光效率，使灯具不眩光、光线舒适、亮度提升、混光更加均匀。本例的结构，可以直接应用于现有结构的LED灯中，与现有结构常用配件结合，如铝基板，透镜，底座，玻璃盖（罩）等。
泡壳的具体实施方式如图3-图8所示，泡壳可以设计成各种形状，只要能保证其具备较好的混光和散光效果即可；例如，如图3所示，泡壳形状为灯泡形；如图4所示，泡壳形状为螺帽形；如图5所示，泡壳形状为草帽形，其顶部有小突起；如图6所示，泡壳形状为圆柱形，其顶部有突起；如图7所示，泡壳形状为蜡烛形；如图8所示，泡壳形状为灯泡形，其顶部设有圆形凹陷。泡壳可以采用玻璃磨砂或者喷粉、喷硅胶等不同处理方式，也可以采用80%以上、100%以下透光率的PC或PMMA等材料制成。
如图9-图13所示，为LED灯珠的LED芯片的不同组合方式，包括：如图9所示的2颗红光LED芯片+2颗蓝光LED芯片；如图10所示的2颗白光LED芯片+2颗红光LED芯片；如图11和图12所示的不同颜色的组合；如图13所示的单色LED芯片等等。LED灯珠可以直接或者间接放置于反射杯或者外壳内。
本例的LED灯，可以应用为射灯类、球泡灯等灯具，也可以使用于相机、激光等信号发射和采集仪器上，其可以在不同环境下使用，使用范围广。
应该理解，以上实施方式只是用于帮助理解本申请，而不应理解为对本申请的限制。对于本领域的技术人员，依据本申请的思想，可以对上述具体实施方式进行变化。
 工业实用性
序列表自由内容

Claims (10)

  1. 一种LED灯，其特征在于，包括反射杯、泡壳、LED灯珠和外壳；所述反射杯容纳于所述外壳内；所述LED灯珠置于所述反射杯底部；所述泡壳罩设于所述LED灯珠上并置于所述反射杯内；所述泡壳用于对所述LED灯珠的出光作第一次光学处理，所述反射杯用于对经所述泡壳作第一次光学处理的出光作第二次光学处理。
  2. 根据权利要求1所述的LED灯，其特征在于：所述第一次光学处理，是将所述LED灯珠发出的光线进行混光和散光。
  3. 根据权利要求2所述的LED灯，其特征在于：所述第二次光学处理，是将所述第一次光学处理后的光线在所述反射杯的内壁进行光线的反射并控制光斑和角度。
  4. 根据权利要求3所述的LED灯，其特征在于：所述LED灯珠包括至少一个LED芯片，所述LED芯片选自红、橙、黄、绿、青、蓝、紫或白光中的一种或者多种。
  5. 根据权利要求3所述的LED灯，其特征在于：所述泡壳由透光率大于或等于80%、小于100%的透光材料制成。
  6. 根据权利要求3所述的LED灯，其特征在于：所述泡壳包括磨砂玻璃壳体；或所述泡壳包括玻璃壳体，该玻璃壳体表面具有用于对光线产生漫射的喷涂层或涂胶层。
  7. 根据权利要求3所述的LED灯，其特征在于：所述反射杯内壁设置具光学效果或者修饰用的反光面。
  8. 根据权利要求3所述的LED灯，其特征在于：所述泡壳具有将光线进行表面发散的壳体结构；所述壳体结构为半球形、半梨形、圆柱形、草帽形、灯泡形、螺帽形、火焰型或蜡烛形中的一种。
  9. 一种LED灯的光效改善方法，其特征在于，包括：
    采用泡壳，罩设于LED灯珠上并置于反射杯内；
    由所述泡壳对所述LED灯珠的出光作第一次光学处理；
    由所述反射杯对经所述泡壳作第一次光学处理的出光作第二次光学处理。
  10. 如权利要求9所述的LED灯的光效改善方法，其特征是：所述第一次光学处理，是将所述LED灯珠发出的光线进行混光和散光。
PCT/CN2012/079491 2011-08-01 2012-08-01 Led灯及其光效改善方法 Ceased WO2013017082A1 (zh)

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