WO2009030121A1 - Lampe a del - Google Patents

Lampe a del Download PDF

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Publication number
WO2009030121A1
WO2009030121A1 PCT/CN2008/070529 CN2008070529W WO2009030121A1 WO 2009030121 A1 WO2009030121 A1 WO 2009030121A1 CN 2008070529 W CN2008070529 W CN 2008070529W WO 2009030121 A1 WO2009030121 A1 WO 2009030121A1
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WO
WIPO (PCT)
Prior art keywords
free
form lens
led
light
lens
Prior art date
Application number
PCT/CN2008/070529
Other languages
English (en)
French (fr)
Inventor
Xiaobing Hu
Original Assignee
Xiaobing Hu
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 Xiaobing Hu filed Critical Xiaobing Hu
Publication of WO2009030121A1 publication Critical patent/WO2009030121A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G02B27/0966—Cylindrical lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
    • G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/06—Simple or compound lenses with non-spherical faces with cylindrical or toric faces

Definitions

  • the present invention relates to a luminaire that uses a high-power LED in a single-chip package or a multi-chip integrated package as a light source, and in particular, a luminaire capable of changing the light distribution by passing light emitted by a high-power LED through a free-form lens.
  • lamps with high-power LEDs are generally used to fix LEDs on heat sinks with heat sinks, and reflect them with light from reflectors to form lamps, or according to the light emitted by LEDs and other point sources.
  • the illuminance is stronger than the directivity, and the light is concentrated to the front of the illuminating surface.
  • a lens is added in the direction of the LED illumination to change the light distribution.
  • the lens generally adopts a convex lens of the conventional concept.
  • An LED lamp characterized in that a high-power LED using a single-chip package or a multi-chip integrated package is used as a light source, and a free-form surface lens is disposed at a position in the direction of illumination of the LED 2
  • the light is incident from one side of the free-form lens 2 and is refracted and then emitted from the other side surface.
  • the light incident surface and the light-emitting surface of the free-form lens 2 may be a combination of convex and concave surfaces of different shapes and different curvatures. A continuous smooth surface. Changing the surface shape and curvature of the incident surface can change the incident angle of the light.
  • Changing the surface shape and curvature of the light surface can change the illumination direction of the refracted light.
  • the incident surface and the surface of the illuminating surface of the lens are designed according to this characteristic. Shape and curvature, the light emitted by the LED is changed through the lens to change its illumination direction and light distribution, and the preset light distribution effect is achieved, thereby meeting the diverse light distribution needs of different lamps.
  • the invention provides a luminaire for changing light distribution of an LED light source by using a free-form lens, thereby realizing accurate and effective light distribution according to different light distribution requirements.
  • the principle of operation of the present invention is to apply a DC power supply to the LED 3 that meets the requirements.
  • the LED 3 When energized, the LED 3 emits light, and the light is radiated through the free-form lens 2.
  • the lamp can effectively illuminate the light emitted by the LED 3 through the free-form lens to change the illumination direction to perform multi-directional and multi-angle illumination.
  • light is directed at the lens, a portion of which is directly refracted through the lens, and a portion of which forms a reflection on the surface of the lens, especially a hollow lens that reflects the lens at a new angle of incidence. Passing the light emitted by the LED 3 under the refraction of the different free-form lens of the present invention
  • the free-form surface lens 2 achieves the desired light distribution effect.
  • the free-curved lens can change the direction of the passing light, and the direction of the light is purposely changed, and the surface shape and curvature of the light-emitting surface of the lens can be changed.
  • the shape and curvature of the light incident surface to change the incident angle of the light and the direction of the illuminating light, thereby changing the angle, range and light distribution of the light of the LED lamp.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a cross-sectional view taken along line Z_Z of Figure 1.
  • Figure 3 is a schematic view showing the structure of the first embodiment of the present invention.
  • Figure 4 is a cross-sectional view of Figure 3A-A.
  • Figure 5 is a cross-sectional view of Figure 3B-B.
  • Figure 6 is a schematic view showing the structure of a second embodiment of the present invention.
  • Figure 7 is a cross-sectional view taken along line 6D-D.
  • Figure 8 is a cross-sectional view taken along line 6C-C.
  • Figure 9 is a schematic view showing the structure of a third embodiment of the present invention.
  • Figure 10 is a cross-sectional view taken along line E-E of Figure 9.
  • Figure 11 is a cross-sectional view taken along line W-W of Figure 9.
  • Figure 12 is a cross-sectional view taken along line F-F of Figure 9.
  • Figure 13 is a schematic view showing the structure of a fourth embodiment of the present invention.
  • Figure 14 is a cross-sectional view taken along line G G of Figure 13;
  • Figure 15 is a cross-sectional view taken along line H H of Figure 13;
  • Figure 16 is a schematic view showing the structure of a fifth embodiment of the present invention.
  • Figure 17 is a cross-sectional view taken along line J-J of Figure 16;
  • Figure 18 is a cross-sectional view taken along line K-K of Figure 16;
  • Figure 19 is a schematic view showing the structure of a sixth embodiment of the present invention.
  • Figure 20 is a cross-sectional view taken along line L-L of Figure 19.
  • Figure 21 is a cross-sectional view taken along line M-M of Figure 19.
  • Figure 22 is a schematic view showing the structure of a seventh embodiment of the present invention.
  • Figure 23 is a cross-sectional view taken along line N-N of Figure 22;
  • Figure 24 is a cross-sectional view taken along line P-P of Figure 22;
  • Figure 25 is a schematic view showing the structure of an eighth embodiment of the present invention.
  • Figure 26 is a cross-sectional view taken along line Q Q.
  • Figure 27 is a cross-sectional view taken along line R-R of Figure 25.
  • Figure 28 is a schematic view showing the structure of a ninth embodiment of the present invention.
  • Figure 29 is a cross-sectional view taken along line S-S of Figure 28.
  • Figure 30 is a cross-sectional view taken along line T-T of Figure 28;
  • Figure 31 is a schematic view showing the structure of a tenth embodiment of the present invention.
  • Figure 32 is a cross-sectional view taken along line U-U of Figure 31.
  • Figure 33 is a cross-sectional view taken along line V-V of Figure 31.
  • Figure 34 is a schematic view showing the structure of an eleventh embodiment of the present invention.
  • Figure 35 is a cross-sectional view taken along line 340.
  • Figure 36 is a cross-sectional view taken along line I - I of Figure 34.
  • Figure 37 is a schematic view showing the structure of a twelfth embodiment of the present invention.
  • Figure 38 is a cross-sectional view taken along line X-X of Figure 37.
  • Figure 39 is a cross-sectional view taken along line Y-Y of Figure 37.
  • Figure 40 is a schematic view showing the structure of a thirteenth embodiment of the present invention.
  • Figure 41 is a cross-sectional view taken along line II and II of Figure 40.
  • Figure 42 is a cross-sectional view taken along line III-III of Figure 40.
  • Figure 43 is a cross-sectional view taken along line IV-IV of Figure 40.
  • Figure 44 is a schematic view showing the structure of a fourteenth embodiment of the present invention.
  • Figure 45 is a cross-sectional view taken along the line V-V of Figure 44.
  • Figure 46 is a cross-sectional view taken along line 44VI-VI.
  • Figure 47 is a schematic view showing the structure of a fifteenth embodiment of the present invention.
  • Figure 48 is a cross-sectional view taken along line VD-VD of Figure 47.
  • Figure 49 is a cross-sectional view taken along line m-m of Figure 47.
  • Figure 50 is a schematic view showing the structure of a sixteenth embodiment of the present invention.
  • Figure 51 is a cross-sectional view taken along line IX - IX of Figure 50.
  • Figure 52 is a cross-sectional view taken along line X-X of Figure 50. detailed description
  • Embodiment 1 See Figure 1, Figure 2, Figure 3, Figure 4, Figure 5.
  • An LED lamp adopts a high-power LED 3 in a single-chip package or a multi-chip integrated package as a light source, the LED 3 is fixed on the lamp body 1, and the free-form lens 21 is located in the LED illumination direction; the free-form lens 2 is provided with a flange 9, a pressing ring 8 is pressed on the flange 9, fixedly connected with the lamp body 1 through the bolt 6, and the LED 3 is sealed between the lamp body and the free-form lens 2; the bolt 7 is fixedly connected to the rear side of the lamp body 1 through the bracket 4, and the bracket 4 is The lamp body 1 is rotatably connected; the wire 5 is connected to the terminal on the LED 3 through the wire hole on the lamp body through the rear of the lamp body.
  • the free-form surface lens structure is: the free-form surface lens 21 is a solid body, the bottom surface is a flat surface, the shape is a circular shape, the middle surface of the mirror body light-emitting surface is convex 211, and the central protrusion is connected with the surrounding protrusion 212, and the height of the protrusion 212 is low.
  • the height of the central protrusion 211 is: the free-form surface lens 21 is a solid body, the bottom surface is a flat surface, the shape is a circular shape, the middle surface of the mirror body light-emitting surface is convex 211, and the central protrusion is connected with the surrounding protrusion 212, and the height of the protrusion 212 is low. The height of the central protrusion 211.
  • Such a structure allows the incident light to be refracted by the lens to produce a condensing effect, which facilitates the concentrating of the light according to requirements, improves the brightness of the central region of the illuminating direction of the luminaire, and can achieve a preset configuration by changing the curvature of the surface of the lens.
  • Light effect Can be made into searchlights, floodlights, spotlights, etc., suitable for lighting in squares, roads, tunnels, factory workshops, mining areas, stadiums, theaters, landscapes, etc.
  • Embodiment 2 is shown in Figure 6, Figure 7, and Figure 8.
  • the free-form surface lens structure is such that the free-form surface lens 22 is a solid body, the bottom surface is a flat surface, and the shape is a circular shape, and the central portion of the light-emitting surface of the free-form surface lens 22 is concave and convex around.
  • the other structure is the same as in the first embodiment.
  • Such a structure allows the incident light to be refracted by the lens to generate an intermediate region where the light is diverged and the light is scattered to the periphery, thereby reducing the brightness of the center point, expanding the illumination area, improving the uniformity of light distribution by the illumination of the lamp, and changing the surface roughness of the lens.
  • the curvature is used to achieve the preset light distribution effect. Suitable for indoor and outdoor lighting in squares, roads, tunnels, factory floors, mining areas, stadiums, theaters, landscapes and other large spaces.
  • Embodiment 3 See Figure 9, Figure 10, Figure 11, Figure 12
  • the free-form surface lens structure is such that the free-form surface lens 23 is a solid body, the bottom surface is a flat surface, and the shape is a circular shape.
  • the light-emitting surface of the free-form surface lens 23 has three protrusions, and the height of the middle strip-shaped protrusion 231 is greater than the height of the protrusions 232 on both sides; the convex portions are connected by a concave arc.
  • the other structure is the same as in the first embodiment.
  • Such a structure can make the direction of the refracted ray of the intermediate region refracted by the incident light to be smaller than the two sides, and the angle of the refracted ray to the two sides is changed greatly, and the obvious effect is that the incident light is refracted through the lens to both sides.
  • the light is increased, the central area has no obvious focusing effect, and the overall illumination area is long oval, and the uniformity of the light distribution in the illumination area can be adjusted by changing the curvature of the protrusion on the surface of the lens, and the surface of the lens can be changed by changing
  • the curvature is used to achieve the preset light distribution effect. Suitable for squares, roads, tunnels, factory workshops, mining areas, stadiums, theaters, landscapes, etc., where space illumination in the depth direction is required.
  • the other structure is the same as in the first embodiment.
  • Embodiment 4 See Figure 13, Figure 14, Figure 15
  • the free-form surface lens structure is such that the free-form surface lens 24 is a solid body, the bottom surface is a flat surface, and the shape is a circular shape, and the free-form surface lens 24 has a cross-sectional shape, and the edge line is a parabolic shape.
  • the other structure is the same as in the first embodiment.
  • Such a structure allows the incident light to be refracted by the lens to produce a condensing effect, which facilitates the concentrating of the light according to requirements, improves the brightness of the central region of the illuminating direction of the luminaire, and can achieve a preset configuration by changing the curvature of the surface of the lens.
  • Light effect It can be used as a searchlight, floodlight, spotlight, spotlight, etc. It is suitable for lighting in squares, roads, tunnels, factory cars, mines, stadiums, theaters, landscapes and other indoor and outdoor spaces.
  • Embodiment 5 See Figure 16, Figure 17, Figure 18
  • the free-form surface lens structure is such that the free-form surface lens 25 is a hollow body, and the hollow section edge line is a parabola or an arc shape. See Example 4 for other structures.
  • Such a structure can change the incident angle of the incident light by changing the curvature of the parabola or the arc of the inner and outer edges of the section, and after the refraction, the light is diverged, thereby achieving a larger illumination angle and a more uniform illumination.
  • Light distribution, and the preset light distribution effect can be achieved by changing the curvature of the surface of the lens. Suitable for indoor and outdoor space lighting with high requirements for contrast, brightness and uniformity.
  • Embodiment 6 See Figure 19, Figure 20, Figure 21
  • the free-form surface lens structure is such that the free-form surface lens 26 is a solid body, the bottom surface is a flat surface, and the shape is a circular shape.
  • the free-form surface lens 26 has an elongated protrusion 261 in the middle of the light-emitting surface, and a protrusion around the protrusion 261 and a circle. 262 is connected, and the protrusion 261 is higher than the protrusion 262.
  • the other structure is the same as in the first embodiment.
  • Such a structure can enhance the concentration of light and the brightness of illumination on the intermediate elliptical region in the illumination area on the basis of extensive illumination, and can realize the preset light distribution effect by changing the curvature of the surface of the lens.
  • Embodiment 7 See Fig. 22, Fig. 23, Fig. 24
  • the free-form surface lens structure is such that the free-form surface lens 27 is a solid body, the bottom surface is a flat surface, and the shape is a circular shape, and the two sides of the light-emitting surface of the free-form curved lens 27 have strip-like protrusions and are concave in the middle.
  • the other structure is the same as in the first embodiment.
  • Such a structure can make the incident light refract through the lens, and the light in the middle region is thinned, and the light to both sides is increased, thereby reducing the brightness of the center point, expanding the longitudinal area of the illumination, and improving the uniformity of the light distribution of the illumination of the lamp, and
  • the preset light distribution effect is achieved by changing the curvature of the surface of the lens. Suitable for indoor and outdoor lighting in squares, roads, tunnels, factory floors, mining areas, military areas and other large spaces.
  • the free-form surface lens structure is such that the free-form surface lens 28 is a solid body, the bottom surface is a flat surface, and the shape is a circular shape.
  • the middle portion and the both side portions of the light-emitting surface of the free-form surface lens 28 are curved convex portions, and the height of the middle convex portion 281
  • the height of the protrusions 292 on both sides is higher than that of the middle protrusions 281.
  • the protrusions are connected by a concave curved surface, and the two sides of the middle protrusion 281 are concave 283.
  • the other structure is the same as in the first embodiment.
  • Such a structure allows the incident light to be refracted by the lens to produce a change in the direction of the light in the middle region, which is smaller than the two sides, and the angle of the light to the two sides is larger than that in the middle.
  • the obvious effect is that the incident light is refracted by the lens and refracted to the sides.
  • the increase in the middle area has no obvious focusing effect, the overall illumination area is long oval, and the overall light distribution in the illumination area is uniform, and the preset light distribution effect can be realized by changing the curvature of the convex surface of the lens surface. It is suitable for space lighting where roads, tunnels, wide fields, mines, etc. need to increase the area of illumination in the depth direction.
  • Embodiment 9 See Figure 28, Figure 29, Figure 30
  • the free-form surface lens structure is such that the free-form surface lens 29 is a solid body, the bottom surface is a flat surface, and the shape is a circular shape, and the free-form surface lens 29 has an elliptical shape in the X-axis cross-section and a concave curve on both sides in the Y-axis cross section. shape.
  • Such a structure allows the incident light to be refracted by the lens to produce a condensing effect, which facilitates the concentrating of the light according to requirements, and the illumination area is elliptical, which improves the brightness of the central elliptical region in the illumination direction of the luminaire, and can be modified by changing the surface of the lens.
  • the curvature is used to achieve a preset light distribution effect. Suitable for indoor and outdoor space lighting in factory floors, warehouses, roads, tunnels, landscapes, etc.
  • the other structure is the same as in the first embodiment.
  • the free-form surface lens structure is such that the free-form surface lens 30 is a hollow body, and the hollow edge line shape is a parabola or an arc shape in the X and Y-axis cross sections.
  • Such a structure can change the incident angle of the incident light by changing the curvature of the parabolic line or the arc of the hollow region and the convexity of the light-emitting surface, and the light is irradiated in a predetermined direction by refraction, thereby realizing a large illumination of the lamp.
  • Angle and longitudinal illumination span and uniform light distribution. Suitable for contrast, brightness and uniformity High indoor and outdoor space lighting is required. See Example 9 for other structures.
  • Embodiment 11 See Figure 34, Figure 35, Figure 36
  • the free-form surface lens structure is such that the free-form surface lens 31 is a hollow body, the bottom surface is the light incident side, and the hollow concave surface section edge line shape is a circular arc or a parabola.
  • Such a structure can change the angle of incident light compared with a lens whose light is incident on one side, and the light which is refracted by the lens after the lens is generated to diverge in the middle region, thereby reducing the brightness of the center point of the illumination area and expanding the illumination.
  • the area, the uniformity of the light distribution of the luminaire and the curvature of the surface of the lens are used to achieve the preset light distribution effect. It is suitable for indoor and outdoor lighting in squares, roads, tunnels, factory floors, gas stations, mining areas and other large spaces. For other structures, see Example 2
  • Embodiment 12 See Figure 37, Figure 38, Figure 39
  • the free-form surface lens structure is such that the free-form surface lens 32 is a hollow body, the bottom surface is the light incident side, and the hollow concave surface cross-sectional line shape is an arc or a parabola.
  • Such a structure allows the incident light to be refracted by the lens, which causes the light in the middle of the illumination area to diverge and become thin, the illumination is reduced, and the light to both sides is increased, thereby reducing the brightness of the center point, expanding the longitudinal width of the illumination, and improving the illumination of the lamp.
  • the uniformity of light distribution and the curvature of the surface of the lens to achieve the preset light distribution effect, suitable for indoor lighting in squares, roads, tunnels, factory floors, mining areas, military areas and other large spaces. For other structures, see Example 7.
  • Embodiment 13 See Figure 40, Figure 41, Figure 42, Figure 43
  • the free-form surface lens structure is such that the free-form surface lens 33 is a hollow body, the bottom surface is the light incident side, and the hollow concave surface cross-sectional line shape is an arc or a parabola.
  • Such a structure allows the incident light to be refracted by the lens to produce a direction in which the direction of the light in the middle of the illumination region is smaller than that on both sides, and the light rays are increased toward both sides.
  • the obvious effect is that the incident light is refracted by the lens, and the light is extended to both sides.
  • the area has no obvious focusing effect, and the overall illumination area is long elliptical, the illumination area in the depth direction is increased, and the overall light distribution in the illumination area is uniform, and the preset light distribution effect can be realized by changing the curvature of the lens surface.
  • Suitable for indoor and outdoor space lighting such as roads, tunnels, squares, mines, advertising, landscapes, etc. See Example 3 for other structures.
  • Embodiment 14 See Fig. 1 Fig. 2 Fig. 44, Fig. 45, Fig. 46
  • the free-form surface lens structure is such that the free-form surface lens 34 is a hollow body, the bottom surface is the light incident side, and the hollow concave surface cross-sectional line shape is an arc or a parabola.
  • Such a structure allows the incident light to be refracted by the lens (partial incident light is reflected by the incident surface of the lens and then refracted) to increase the amount of light toward both sides.
  • the obvious effect is that the overall illuminated area has a long elliptical shape and has a longitudinal illumination advantage.
  • the overall light distribution in the illumination area is uniform, and the preset light distribution effect can be realized by changing the curvature of the surface of the lens. Suitable for space lighting in roads, tunnels, squares, factories, advertising, mines, etc.
  • Embodiment 15 See Figure 47, Figure 48, Figure 49
  • the free-form surface lens structure is such that the free-form surface lens 35 is a hollow body, the bottom surface is the light incident side, and the hollow concave surface cross-sectional line shape is a circular arc or a parabola.
  • Such a structure can make the incident light refract through the lens to produce a scattering effect, which is convenient for expanding the illumination range according to requirements, improving the uniformity of light distribution in the illumination area of the lamp, and realizing the preset light distribution effect by changing the curvature of the surface of the lens.
  • Suitable for space lighting of roads, tunnels, squares, factories, advertisements, mines, etc. See Figure 1 for other structures.
  • Embodiment 16 See Fig. 50, Fig. 51, Fig. 52
  • the free-form surface lens structure is such that the free-form surface lens 36 is a hollow body, the bottom surface is the light incident side, and the hollow concave surface cross-sectional line shape is an arc or a parabola.
  • Such a structure can enhance the concentration and illumination brightness of the light in the middle elliptical region in the illumination area on the basis of extensive illumination, and can realize the preset light distribution effect by changing the curvature of the surface of the lens.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

一种 LED灯具 技术领域
本发明涉及一种以单芯片封装或多芯片集成封装的大功率 LED作为光源的灯具， 尤其 是能将大功率 LED发出的光通过一个自由曲面透镜进行改变光分布的灯具。
背景技术
目前，以大功率 LED为光源的灯具一般都采用将 LED固定在带有散热片的散热装置上， 并用反光罩对 LED发出的光进行反射做成灯具， 或根据 LED发出的光线和其他点光源发光相 比方向性比较强、 光线比较集中射向出光面前方的特性， 在 LED照射方向加一透镜来改变 光分布。 透镜一般采用传统概念的凸透镜， 这两种结构无法实现多样化的光分布改变， 只 能实现圆形范围的聚光和散光， 满足不了作为不同用途灯具所需要的配光要求。
发明内容：
本发明的目的是，提供一种 LED灯具，为使大功率 LED灯具能根据不同用途、不同配光 需要， 达到其最佳配光效果。
本发明为解决其技术问题所采用的技术方案是： 一种 LED灯具， 其特征在于， 采用单 芯片封装或多芯片集成封装的大功率 LED为光源， 在 LED照射方向的位置设置自由曲面透 镜 2， 光线从自由曲面透镜 2的一侧射入， 经折射后由另一侧表面射出， 自由曲面透镜 2的 光线射入面和出光面可以是由不同形状、 不同曲度的凸面和凹面组合而成的连续的光滑的 曲面。 改变射入面的表面形状和曲度能改变光线的入射角度， 改变出光面的表面形状和曲 度能改变折射光线的照射方向， 根据这一特性来设计透镜的射入面和出光面的表面形状和 曲度， 实现对 LED发出的光通过透镜后改变其照射方向和光分布， 达到预设的配光效果， 从而满足不同用途灯具的多样性配光需要。
本发明提供一种用自由曲面透镜对 LED光源进行改变配光的灯具， 从而实现了根据不 同光分布需要进行准确有效地配光。
本发明的工作原理是， 给 LED3施加符合要求的直流电供电。通电时， LED3发光工作， 光线通过自由曲面透镜 2照射出去， 该灯具可以有效地将 LED3发出的光通过自由曲面透镜 折射改变照射方向来进行多方向多角度照射。 当光线射向透镜， 其中一部分直接经折射穿 过透镜， 还有一部分会在透镜表面形成反射， 尤其是空心的透镜， 反射后又会以新的入射 角度穿射透镜。在本发明不同的自由曲面透镜所产生的折射作用下，将 LED3发出的光通过 自由曲面透镜 2后达到需要的配光效果。
本发明的有益效果是： 根据光的折射定律，利用自由曲面透镜能对通过的光线进行改 变方向的特性， 对光的照射方向有目的地进行改变， 可以改变透镜出光面的表面形状和曲 度以及光线射入面的形状和曲度来改变光线的入射角度和折射光线的照射方向， 从而实现 改变 LED灯具的光线照射角度、 范围以及光分布。 将 LED发出的光通过自由曲面透镜后， 会在设定的不同的入射角度、 不同的表面曲度的自由曲面透镜的折射作用下取得理想效果 的灯具配光。 附图说明
1灯体、 2自由曲面透镜、 21〜52自由曲面透镜、 3LED、 4支架、 5导线、 6螺栓、 7螺栓、 8压圈、 9凸缘。
附图 1是本发明结构示意图。
附图 2是图 1 Z_Z剖面视图。
附图 3是本发明第一个实施例结构示意图。
附图 4是图 3A— A剖视图。
附图 5是图 3B— B剖视图。
附图 6是本发明第二个实施例结构示意图。
附图 7是图 6D— D剖视图。
附图 8是图 6C— C剖视图。
附图 9是本发明第三个实施例结构示意图。
附图 10是图 9 E— E剖视图。
附图 11是图 9 W— W剖视图。
附图 12是图 9 F— F剖视图。
附图 13是本发明第四个实施例结构示意图。
附图 14是图 13 G— G剖视图。
附图 15是图 13 H— H剖视图。
附图 16是本发明第五个实施例结构示意图。
附图 17是图 16 J— J 剖视图。
附图 18是图 16 K— K剖视图。 附图 19是本发明第六个实施例结构示意图。 附图 20是图 19 L一 L剖视图。
附图 21是图 19 M— M剖视图。
附图 22是本发明第七个实施例结构示意图。 附图 23是图 22 N— N剖视图。
附图 24是图 22 P— P 剖视图。
附图 25是本发明第八个实施例结构示意图。 附图 26是图 25 Q— 剖视图。
附图 27是图 25 R— R剖视图。
附图 28是本发明第九个实施例结构示意图。 附图 29是图 28 S— S剖视图。
附图 30是图 28 T— T剖视图。
附图 31是本发明第十个实施例结构示意图。 附图 32是图 31 U— U剖视图。
附图 33是图 31 V— V剖视图。
附图 34是本发明第十一个实施例结构示意图。 附图 35是图 34 0— 0剖视图。
附图 36是图 34 I— I 剖视图。
附图 37是本发明第十二个实施例结构示意图。 附图 38是图 37 X— X剖视图。
附图 39是图 37 Y— Y剖视图。
附图 40是本发明第十三个实施例结构示意图。 附图 41是图 40 II一 II剖视图。
附图 42是图 40 III— III剖视图。
附图 43是图 40 IV— IV剖视图。
附图 44本发明第十四个实施例结构示意图。 附图 45是图 44 V— V剖视图。
附图 46是图 44VI— VI 剖视图。
附图 47是本发明第十五个实施例结构示意图。 附图 48是图 47 VD-VD 剖视图。
附图 49是图 47 m-m 剖视图。
附图 50是本发明第十六个实施例结构示意图。
附图 51是图 50 IX -IX 剖视图。
附图 52是图 50 X— X剖视图。 具体实施方式
下面结合附图对本发明作进一步说明：
实施例 1 见图 1、 图 2、 图 3、 图 4、 图 5。
一种 LED灯具，采用单芯片封装或多芯片集成封装的大功率 LED3为光源， LED3固定在 灯体 1上， 自由曲面透镜 21位于 LED照射方向； 自由曲面透镜 2设置有凸缘 9， 压圈 8压在凸 缘 9上， 通过螺栓 6与灯体 1固定连接， 将 LED3密封在灯体与自由曲面透镜 2之间； 螺栓 7穿 过支架 4与灯体 1后侧面固定连接， 支架 4与灯体 1转动连接； 导线 5由灯体后部通过灯体 上的导线孔与 LED3上的接线端连接。所述的自由曲面透镜结构为， 自由曲面透镜 21为实心 体， 底面为平面，形状为圆形， 镜体出光表面中部凸起 211,中部凸起与四周凸起 212连接， 凸起 212高度低于中部凸起 211高度。
这样的结构可使入射光经过透镜折射后产生聚光效果， 便于将光线根据要求进行聚 射， 提高灯具照射方向中心区域的亮度， 并可通过改变透镜表面凹凸的曲度来实现预设的 配光效果。 可制成探照灯、 投光灯、 射灯等， 适用于广场、 道路、 隧道、 工厂车间、 矿区、 球场、 剧场、 景观等场所的照明。
实施例 2 见图 6、 图 7、 图 8中
所述的自由曲面透镜结构为， 自由曲面透镜 22为实心体， 底面为平面，形状为圆形， 自由曲面透镜 22出光表面中心部位内凹， 四周凸起。 其他结构同实施例 1。
这样的结构可使入射光经过透镜折射后产生中间区域光线被发散、 光线向外围散射， 起到降低中心点亮度、 扩大照射面积、 提高灯具照射的光分布均匀度， 并可通过改变透镜 表面凹凸的曲度来实现预设的配光效果。 适用于广场、 道路、 隧道、 工厂车间、 矿区、 球 场、 剧场、 景观以及其他大空间室内外照明。
实施例 3 见图 9、 图 10、 图 11、 图 12
所述的自由曲面透镜结构为， 自由曲面透镜 23为实心体， 底面为平面，形状为圆形， 自由曲面透镜 23出光表面呈三个凸起， 中部条状凸起 231高度大于两侧凸起 232高度； 凸起 部位之间由内凹圆弧过渡连接。 其他结构同实施例 1。
这样的结构可使入射光经过透镜折射后产生中间区域的折射光线方向改变较两侧小、 向两侧方向的折射光线角度改变较大， 其明显效果是入射光经过透镜折射后向两侧的光线 增多， 中间区域无明显聚射效果， 整体照射区域呈长椭圆形， 而且可以通过改变透镜表面 上凸起的曲度来调整照明区域内光分布的均匀度， 并可通过改变透镜表面凸起的曲度来实 现预设的配光效果。 适用于广场、 道路、 隧道、 工厂车间、 矿区、 球场、 剧场、 景观等需 要拓宽纵深方向照射范围的空间照明。 其他结构同实施例 1。
实施例 4 见图 13、 图 14、 图 15
所述的自由曲面透镜结构为， 自由曲面透镜 24为实心体， 底面为平面，形状为圆形， 自由曲面透镜 24截面形状为，其边缘线为抛物线形状。 其他结构同实施例 1。
这样的结构可使入射光经过透镜折射后产生聚光效果， 便于将光线根据要求进行聚 射， 提高灯具照射方向中心区域的亮度， 并可通过改变透镜表面凹凸的曲度来实现预设的 配光效果。 可做成探照灯、 投光灯、 射灯、 聚光灯等， 适用于广场、 道路、 隧道、 工厂车 间、 矿区、 球场、 剧场、 景观以及其他室内外空间照明。
实施例 5 见图 16、 图 17、 图 18
所述的自由曲面透镜结构为， 自由曲面透镜 25为空心体， 空心的截面边缘线为抛物线 或弧线形形状。 其他结构见实施例 4。
这样的结构可以通过改变截面内外边缘的抛物线或弧线的曲度来改变入射光线的入 射角， 经折射后， 使光线形成发散的效果， 从而实现灯具能有较大的照射角度和较均匀的 光分布， 并可通过改变透镜表面凹凸的曲度来实现预设的配光效果。 适用于对照度、 亮度 和均匀度要求较高的室内、 室外空间照明。
实施例 6 见图 19、 图 20、 图 21
所述的自由曲面透镜结构为， 自由曲面透镜 26为实心体， 底面为平面，形状为圆形， 自由曲面透镜 26出光面中部有一个长形凸起 261，凸起 261四周与一圈凸起 262连接，凸起 261高于凸起 262。 其他结构同实施例 1。
这样的结构可以实现在广泛照明的基础上对照射区域内中间椭圆形区域加强光线的 集中度和照明的亮度， 并可通过改变透镜表面凹凸的曲度来实现预设的配光效果。 适用于 工厂车间、 仓库、 道路、 隧道、 景观等室内外空间照明。 实施例 7 见图 22、 图 23、 图 24
所述的自由曲面透镜结构为， 自由曲面透镜 27为实心体，底面为平面，形状为圆形， 自 由曲面透镜 27出光表面的两侧部分呈条状凸起， 中间内凹。 其他结构同实施例 1。
这样的结构可使入射光经过透镜折射后会使中间区域光线变疏， 向两侧的光线增多， 起到降低中心点亮度、 扩大照射的纵向面积、 提高灯具照射的光分布均匀度， 并可通过改 变透镜表面凹凸的曲度来实现预设的配光效果。 适用于广场、 道路、 隧道、 工厂车间、 矿 区、 军事区域以及其他大空间室内外照明。
实施例 8 见图 25、 图 26、 图 27
所述的自由曲面透镜结构为， 自由曲面透镜 28为实心体， 底面为平面，形状为圆形， 自由曲面透镜 28出光表面的中间部分和两侧部分呈曲面凸起， 中间凸起 281的高度高于两 侧凸起 292的高度， 两侧凸起 292的凸起曲度大于中间凸起 281， 凸起之间由内凹曲面过渡 连接，中间凸起 281两侧内凹 283。 其他结构同实施例 1。
这样的结构可使入射光经过透镜折射后产生中间区域的光线方向改变较两侧小、向两 侧方向的光线角度改变较中间大， 其明显效果是入射光经过透镜折射后折射光线向两侧的 增多， 中间区域无明显聚射效果， 整体照射区域呈长椭圆形， 而且照明区域内整体光分布 均匀， 并可通过改变透镜表面凸起的曲度来实现预设的配光效果。 适用于道路、 隧道、 广 场、 矿井等需要增加纵深方向照射面积的空间照明。
实施例 9 见图 28、 图 29、 图 30
所述的自由曲面透镜结构为， 自由曲面透镜 29为实心体， 底面为平面，形状为圆形， 自由曲面透镜 29在 X轴截面形状为椭圆形， 在 Y轴截面为两侧内凹的曲线形。
这样的结构可使入射光经过透镜折射后产生聚光效果， 便于将光线根据要求进行聚 射， 照明区域呈椭圆形， 提高灯具照射方向中心椭圆区域的亮度， 并可通过改变透镜表面 凸起的曲度来实现预设的配光效果。 适用于工厂车间、 仓库、 道路、 隧道、 景观等室内外 空间照明。 其他结构同实施例 1。
实施例 10 图 31、 图 32、 图 33
所述的自由曲面透镜结构为， 自由曲面透镜 30为空心体， 在 X、 Y轴截面，空心边缘线 形状是抛物线或弧线形状。 这样的结构可以通过改变中空区域截面抛物线或弧线和出光表 面凸起的曲度来改变入射光线的入射角， 经折射实现将光线按预设的方向照射， 从而实现 灯具能有较大的照射角度和纵向照射跨度和均匀的光分布。 适用于对照度、 亮度和均匀度 要求较高的室内、 室外空间照明。 其他结构见实施例 9 。
实施例 11 见图 34、 图 35、 图 36
所述的自由曲面透镜结构为， 自由曲面透镜 31为空心体， 底面即光线入射一侧， 空心 凹面截面边缘线形状为圆弧或抛物线。
这样的结构可使与光线入射一侧为平面的透镜相比， 改变了入射光的角度， 光经过透 镜折射后产生中间区域的光线向周围发散， 起到降低照射区域中心点的亮度、 扩大照射面 积、 提高灯具光分布均匀度和通过改变透镜表面凹凸的曲度来实现预设的配光效果， 适用 于广场、 道路、 隧道、 工厂车间、 加油站、 矿区以及其他大空间室内外照明。 其他结构见 实施例 2
实施例 12 见图 37、 图 38、 图 39
所述的自由曲面透镜结构为， 自由曲面透镜 32为空心体， 底面即光线入射一侧， 空心 凹面截面边缘线形状为圆弧或抛物线。 这样的结构可使入射光经过透镜折射后， 会使照射 区域中间位置光线发散变疏， 照度降低， 向两侧的光线增多， 起到降低中心点亮度、 扩大 照射的纵向宽度、 提高灯具照射的光分布均匀度和通过改变透镜表面凹凸的曲度来实现预 设的配光效果， 适用于广场、 道路、 隧道、 工厂车间、 矿区、 军事区域以及其他大空间室 内外照明。 其他结构见实施例 7 。
实施例 13 见图 40、 图 41、 图 42、 图 43
所述的自由曲面透镜结构为， 自由曲面透镜 33为空心体， 底面即光线入射一侧， 空心 凹面截面边缘线形状为圆弧或抛物线。
这样的结构可使入射光经过透镜折射后产生照射区域中间的光线方向改变较两侧小、 向两侧方向的光线增多， 其明显效果是入射光经过透镜折射后光线向两侧的扩展， 中间区 域无明显聚射效果， 整体照射区域呈长椭圆形， 纵深方向照射面积增加， 而且照射区域内 整体光分布均匀， 并可实现通过改变透镜表面的凹凸曲度来实现预设的配光效果。 适用于 道路、 隧道、 广场、 矿井、 广告、 景观等室内外空间照明。 其他结构见实施例 3。
实施例 14 见图 1图 2图 44、 图 45、 图 46
所述的自由曲面透镜结构为， 自由曲面透镜 34为空心体， 底面即光线入射一侧， 空心 凹面截面边缘线形状为圆弧或抛物线。
这样的结构可使入射光经过透镜折射 〈部分入射光经透镜入射表面反射后再折射〉 产 生向两侧方向的光线增多， 其明显效果是， 整体照射区域呈长椭圆形， 有纵向照射优势， 而且照明区域内整体光分布均匀， 可实现通过改变透镜表面凹凸的曲度来实现预设的配光 效果。 适用于道路、 隧道、 广场、 工厂、 广告、 矿井等空间照明。 其他结构见实施例 8 实施例 15 见图 47、 图 48、 图 49
所述的自由曲面透镜结构为， 自由曲面透镜 35为空心体， 底面即光线入射一侧， 空心 凹面截面边缘线形状为圆弧或抛物线。
这样的结构可使入射光经过透镜折射产生散射效果， 便于将光线根据要求进行扩大照 射范围， 提高灯具照射区域的光分布均匀度和通过改变透镜表面凹凸的曲度来实现预设的 配光效果， 适用于道路、 隧道、 广场、 工厂、 广告、 矿井等空间照明。 其他结构见实施例 1
实施例 16 见图 50、 图 51、 图 52
所述的自由曲面透镜结构为， 自由曲面透镜 36为空心体， 底面即光线入射一侧， 空心 凹面截面边缘线形状为圆弧或抛物线。
这样的结构可以实现在广泛照明的基础上对照射区域内中间椭圆形区域加强光线的 集中度和照明亮度， 并可通过改变透镜表面凹凸的曲度来实现预设的配光效果。 适用于工 厂车间、 仓库、 道路、 隧道、 景观、 广告等室内外空间照明。 其他结构见实施例 6。

Claims

权利要求
1、 一种 LED灯具， 其特征在于， 采用单芯片封装或多芯片集成封装的大功率 LED为 光源， 在 LED照射方向的位置设置自由曲面透镜 （2 ) 。
2、 按照权利要求 1所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （21 ) 为实心体， 底面为平面，形状为圆形， 镜体出光表面中部凸起
( 211 ) 1,中部凸起与四周凸起 （212)连接， 凸起 （212) 高度低于中部凸起 （211 ) 高度。
3、 按照权利要求 1所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （22) 为实心体， 底面为平面，形状为圆形， 自由曲面透镜 （22) 出 光表面中心部位内凹， 四周凸起。
4、 按照权利要求 1所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （23 ) 为实心体， 底面为平面，形状为圆形， 自由曲面透镜 （23 ) 出 光表面呈三个凸起， 中部凸起 （231 ) 高度大于两侧凸起 （232) 高度； 凸起部位之间由内 凹圆弧过渡连接。
5、 按照权利要求 1所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （24) 为实心体， 底面为平面，形状为圆形， 自由曲面透镜 （24) 截 面形状为，其边缘线为抛物线形状。
6、 按照权利要求 5所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （25 ) 为空心体， 空心的截面边缘线为抛物线或弧线形形状。
7、 按照权利要求 1所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （26 ) 为实心体， 底面为平面，形状为圆形， 自由曲面透镜 （26 ) 出 光面中部有一个长形凸起 （261 ) ，凸起（261)四周与一圈凸起 （262 ) 连接，凸起 （262 ) 高 于凸起 （262 ) 。
8、 按照权利要求 1所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （27 ) 为实心体， 底面为平面，形状为圆形， 自由曲面透镜 （27 ) 出 光表面的两侧部分凸起， 中间内凹。
9、 按照权利要求 1所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （28 ) 为实心体， 底面为平面，形状为圆形， 自由曲面透镜 （28 ) 出 光表面的中间部分和两侧部分呈曲面凸起，中间条状凸起（281 )的高度高于两侧凸起（292) 的高度， 凸起之间由内凹曲面过渡连接，中间条状凸起 （281 ) 两侧内凹 （283) 。
10、 按照权利要求 1所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜结 构为， 自由曲面透镜 （29) 为实心体， 底面为平面，形状为圆形， 自由曲面透镜 （29)在 X 轴截面形状为椭圆形， 在 Y轴截面为两侧内凹的曲线形。
11、 按照权利要求 10所述的一种 LED灯具， 其特征在于， 所述的自由曲面透镜 结构为， 自由曲面透镜 （30) 为空心体， 在 X、 Y轴截面，空心边缘线形状是抛物线或弧线 形状。
12、 按照权利要求 2或 3或 4或 7或 8或 9所述的一种 LED灯具， 其特征在于， 所述 的自由曲面透镜结构为， 自由曲面透镜 （31 ) 为空心体， 底面即光线入射一侧， 空心凹面 截面边缘线形状为圆弧或抛物线。
13、 按照权利要求 12所述的一种 LED灯具， 其特征在于， 所述的 LED (3)固定在灯体 ( 1 )上， 自由曲面透镜（2)位于 LED (3)照射方向； 自由曲面透镜（2)设置有凸缘（9)， 压圈 （8) 压在凸缘上， 通过螺栓 （6) 与灯体（1)固定连接， 将 LED (3) 密封在灯体与自 由曲面透镜 （2) 之间； 螺栓 （7) 穿过支架 （4) 与灯体（1 )后侧面固定连接， 支架 （4) 与灯体 （ 1 ) 转动连接； 导线 （5) 由灯体后部通过灯体上的导线孔与 LED (3) 上的接线 端连接。
14、按照权利要求 1或 5或 6或 10或 11所述的一种 LED灯具，其特征在于，所述的 LED (3) 固定在灯体 （1 ) 上， 自由曲面透镜 （2) 位于 LED (3) 照射方向； 自由曲面透镜 （2) 设 置有凸缘 （9) ， 压圈 （8) 压在凸缘上， 通过螺栓 （6) 与灯体（1)固定连接， 将 LED (3) 密封在灯体与自由曲面透镜 （2) 之间； 螺栓 （7) 穿过支架 （4) 与灯体（1 )后侧面固定 连接， 支架（4)与灯体（ 1 )转动连接； 导线（5)由灯体后部通过灯体上的导线孔与 LED
(3) 上的接线端连接。
PCT/CN2008/070529 2007-09-07 2008-03-19 Lampe a del WO2009030121A1 (fr)

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