WO2012065417A1 - 光反射器和具有该光反射器的照明系统 - Google Patents

光反射器和具有该光反射器的照明系统 Download PDF

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Publication number
WO2012065417A1
WO2012065417A1 PCT/CN2011/074439 CN2011074439W WO2012065417A1 WO 2012065417 A1 WO2012065417 A1 WO 2012065417A1 CN 2011074439 W CN2011074439 W CN 2011074439W WO 2012065417 A1 WO2012065417 A1 WO 2012065417A1
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Prior art keywords
light
light reflector
reflector according
bridge
opening
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PCT/CN2011/074439
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English (en)
French (fr)
Inventor
刘洋
卢明
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香港应用科技研究院有限公司
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Publication of WO2012065417A1 publication Critical patent/WO2012065417A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type

Definitions

  • the present invention relates to a light emitting device, and more particularly to a light reflector and an illumination system having the same. Background technique
  • Lighting systems often use optical lenses or light mirrors to achieve a certain light distribution.
  • Optical lens
  • optical lenses also has the following disadvantages: a) low light efficiency (80% to 90%), mainly caused by material absorption and defocus matching loss; b) attenuation after long-term operation, mainly including ultraviolet-induced attenuation and heat Attenuation induced; c) yellow halo.
  • the advantages of using conventional light mirrors are: a) high light efficiency (more than 95%); b) ultraviolet, heat-induced attenuation is not obvious; c) no yellow halo.
  • conventional light mirrors have the following drawbacks: a) uneven light emission, most of the light energy output is concentrated in the central region; b) it is difficult to provide a wide angle (batwing) light distribution; c) there is a glare problem.
  • U.S. Patent Application No. US2007/0201225 A1 discloses an optical lens of a batwing light distribution (see FIG. 2 of the specification) which uses an optical lens to obtain a light distribution of a batwing, the light distribution angle range being wide and uniform, but Light efficiency is relatively low.
  • US Patent Application No. 2008/0074876 A1 discloses the use of two separate optical mirror boxes to provide a half batwing light distribution, respectively. Wherein, the two relatively adjustable optical fasteners are positioned in parallel with each other, and respectively generate a batwing light distribution as a mirror. This scheme uses the mechanical structure of the luminaire to obtain the light distribution of the batwing, and the assembly structure is complicated.
  • European Patent Application EP 1 925 878 A1 discloses a gas discharge lamp comprising two illuminating devices, each illuminating device comprising a separate optical mirror on each side of the gas discharge lamp facing the support. , the location is directional.
  • the gas discharge lamp produces a batwing light distribution, each illuminating device having a greater intensity in its respective region, and the two regions can be independently positioned by orienting the two mirrors.
  • the assembly structure of such a luminaire is complicated. Summary of the invention
  • the main object of the present invention is to provide a simple assembly for the deficiencies of the prior art.
  • the structured light reflector can produce a light distribution of the batwings to achieve a uniform wide angle light distribution for illumination systems such as LED applications, while also having high light efficiency.
  • Another object of the present invention is to provide a light reflector using the light reflector
  • the present invention adopts the following technical solutions:
  • a light reflector comprising:
  • a trough body comprising a bottom portion and a plurality of side walls extending from the bottom portion to the top opening, the top opening having a size larger than a size of the bottom portion, the bottom portion having a bottom opening for emitting light from the light emitting device, the bottom portion and the bottom portion
  • the inner surface of the side wall is a light reflecting surface
  • a three-dimensional bridge is mounted on the inner side of the side wall corresponding to the position of the bottom opening, and the concentrated light energy from the bottom opening is distributed to a wider angle range by reflection or refraction.
  • the top opening and the bottom opening are rectangular.
  • the three-dimensional bridge is bridged on two opposite side walls corresponding to the long sides of the rectangle.
  • the stereoscopic bridge has a light reflecting surface that reflects a central portion of the outgoing light beam from the bottom opening to the bottom, and light is reflected to a wider range of angles via the bottom and the side walls.
  • the stereoscopic bridge includes a transparent block having a lens effect that refracts a central portion of the beam exiting the bottom opening to a wider range of angles.
  • the cross section of the three-dimensional bridge is a dome shape or a chevron shape convex toward the bottom.
  • the cross section of the three-dimensional bridge is a crest shape having an inflection point convex toward both sides of the bottom.
  • the inner surfaces of the plurality of side walls are all concave.
  • the groove body is symmetrical or asymmetrical, and the asymmetric light distribution of the groove body is asymmetric in a 90 degree direction.
  • At least one of the plurality of side walls has a stepped layer or a diffused inner surface.
  • the stepped layer comprises a plurality of arched arcuate steps.
  • the light reflecting surface of the trough body and/or the light reflecting surface of the stereoscopic bridge comprises vacuum deposited aluminum or silver.
  • the tank body is molded of plastic.
  • An illumination system comprising one or more of the aforementioned light reflectors, and mounted on a light reflector A light emitting device at the bottom opening.
  • the light emitting device comprises a light emitting
  • the stereoscopic bridge mounted on the side wall of the trough by reflection or refraction, distributes the concentrated light energy emitted from the bottom opening of the trough body to a wider angle range, which is to be concentrated at the center portion.
  • the emitted light is distributed to the side, which produces the light distribution of the batwing, obtaining a wide range of beam angles and good uniformity of light intensity, while also having the ideal light performance such as the high light efficiency of the conventional light reflector, making up for the tradition.
  • the lack of optical lenses in the solution is critical to the long-term operation of lighting equipment.
  • the present invention is a single light reflector, which is greatly simplified in structure, and the installation process in the illumination system is very simple.
  • the light reflector of the present invention can be applied to the manufacture of various outdoor lamps (such as LED lighting devices), and is suitable for various outdoor wide-angle light distribution lighting applications, such as roads, blocks, and squares.
  • FIG. 1 is a schematic structural view of a conventional illumination system using an optical lens
  • FIG. 2 is a schematic structural view of a conventional illumination system using two light reflection mirrors
  • FIG. 3a-3b is another existing one using two Schematic diagram of the illumination system of a light mirror
  • 5a-5e are respectively a perspective view, a side view, a top view, a bottom view and a front view of the first embodiment of the present invention (both perspective views, the same below);
  • Figure 6 is a perspective view of a second embodiment of the present invention.
  • 7a-7e are respectively a perspective view, a side view, a top view, a bottom view and a front view of a third embodiment of the present invention.
  • 8a-8e are respectively a perspective view, a side view, a top view, a bottom view and a front view of a fourth embodiment of the present invention.
  • 9a-9e are respectively a perspective view, a side view, a top view, a bottom view and a front view of a fifth embodiment of the present invention.
  • 10aa-10e are respectively a perspective view, a side view, a top view, a bottom view and a front view of the sixth embodiment of the present invention.
  • Figure la la l le le are respectively a perspective view, a side view, a top view, a bottom view and a front view of the seventh embodiment of the present invention
  • 12 is a light distribution curve obtained by using a reflective surface type stereo bridge according to an embodiment of the present invention
  • FIG. 13 is a light distribution curve obtained by using a lens type three-dimensional bridge according to an embodiment of the present invention
  • FIG. 15 is a schematic diagram of an illuminance distribution of an applied illumination system according to an embodiment of the present invention.
  • a light reflector includes a trough body 1 and a stereoscopic bridge 2, the trough body 1 includes a bottom portion 3 and a plurality of side walls extending from the bottom portion 3 to the top opening 4, The size of the top opening is larger than the size of the bottom portion, the bottom portion has a bottom opening 5 for emitting light from the light emitting device, and the bottom surface and the inner surface of the side wall are light reflecting surfaces; the stereoscopic bridge 2 corresponds to the bottom opening 5 The position is mounted on the inside of the side wall, and the concentrated light energy from the bottom opening 5 is distributed to a wider angle range by reflection or refraction.
  • the installation position of the three-dimensional bridge and the shape of the bridge are relatively variable to optimize the optical performance, as long as the stereo bridge can play the role of the side light on the concentrated light energy at the center.
  • the light emitting device at the bottom opening may be an LED chip.
  • the top opening and the bottom opening of the trough body 1 are both rectangular, and the three-dimensional bridge 2 is bridged on two opposite side walls corresponding to the long sides of the rectangle, and faces the bottom opening along the width direction of the bottom opening. Central location.
  • the stereoscopic bridge may include a reflective sheet or a reflective block covered with a light reflecting surface, such as a curved reflective sheet covering the metallic reflective surface, the reflective sheet or reflective block reflecting the central portion of the outgoing beam from the bottom opening to the trough body At the bottom, the light is then reflected to the side walls of the trough, and the light is ultimately emitted as a whole from the top opening of the trough with the light distribution of the batwing.
  • a light reflecting surface such as a curved reflective sheet covering the metallic reflective surface
  • the stereoscopic bridge may comprise a transparent block that acts as a lens that refracts from a central portion of the beam exiting the bottom opening to a wider range of angles, while other light energy is flanked by the trough body Wall reflection, as such, the light eventually exits entirely from the top opening of the trough with the light distribution of the batwing.
  • the grooves may be symmetrical or asymmetrical, and for asymmetric embodiments, the light distribution is asymmetrical in the 90D direction to increase light utilization efficiency and eliminate glare.
  • the tank body can be molded from plastic.
  • the light reflecting surface of the side wall and the bottom of the tank body may be formed by vacuum-deposited aluminum or silver.
  • the light reflecting surface of the stereoscopic bridge may also comprise vacuum deposited aluminum or silver, or other metal layers. Reflective surface.
  • the groove body is of a symmetrical design, and the bottom and top openings of the groove body are both rectangular.
  • the inner surface of each side wall has a concave surface with an approximate curvature as a whole. , forming a bowl shape.
  • the stereoscopic bridge is a reflection sheet covered with a light reflecting surface, the cross section of which is a dome shape convex toward the bottom, and the stereoscopic bridge is near the top opening.
  • the reflection sheet can be divided into two symmetrical curved surfaces that are open toward the bottom according to the central axis, and respectively reflect the light.
  • the difference from the first embodiment is that the cross section of the reflection sheet is a chevron convex toward the bottom.
  • the difference from the first embodiment is that the stereoscopic bridge is a reflective block covered with a light reflecting surface, and the reflective block has a cross section of a peak shape convex toward the bottom, Both sides have a curved inflection point closer to the top opening.
  • the reflective block is mounted in the middle of the side wall.
  • the trough body is still in a symmetrical design, but the stereoscopic bridge uses a transparent block having a lens function.
  • the transparent block is mounted adjacent to the top opening and has a cross-section that is a crest shape that is convex toward the bottom, and has curved inflection points on both sides of the top opening.
  • the difference from the fourth embodiment is that the cross section of the transparent block is a dome shape convex toward the bottom.
  • the transparent block is mounted in the middle of the side wall.
  • each of the side walls has an inner surface of the stepped layer, so that the uniformity of the light beam can be improved.
  • the stepped layer comprises a plurality of curved arcuate steps, and the radius of the arc is adaptively adjusted to further improve the uniformity of the beam.
  • Each side wall can also have a diffused inner surface that also increases the uniformity of the beam.
  • the difference from the third embodiment is that the groove body is an asymmetric design, and the bottom and top openings of the groove body are still rectangular, but in shape.
  • the inner surface of one long side wall of the trough body is a concave surface having a curvature as a whole, and the inner surface of the other long side wall is a flat surface.
  • the light distribution thus obtained is asymmetric in the 90-degree direction, which increases light utilization efficiency and eliminates glare.
  • the light field distribution can generally be divided into two directions of 0 degrees and 90 degrees, which are perpendicular to each other.
  • the foregoing embodiment is symmetrical in the direction of the light field distribution of 0 degrees, and can be symmetrically and asymmetrically designed in the direction of 90 degrees.
  • the light reflector of the foregoing embodiments can be used in a lighting system, for example, a lighting device using LEDs.
  • the facet system includes a plurality of light reflectors and a plurality of LED chips mounted in cooperation with the light reflectors.
  • the light efficiency is: 93%;
  • the beam angle (FWHM) is: 125. (0D) 56 (90D);
  • the glare level is: 80D : 25 cd/klm ; 90D : 0 cd/klm;
  • the light distribution is of the cutoff type
  • the effective illumination area at 8m height is:
  • the road lighting obtained is as follows:

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

Description

光反射器和具有该光反射器的照明系统 技术领域
本发明涉及发光设备, 特别是涉及一种光反射器和具有该光反射器的 照明系统。 背景技术
照明系统常使用光学透镜或光反射镜来获得一定的光分布。 光学透镜 说
常用于广角分布照明, 例如户外照明, 其有如下优点: a)具有均匀的光分 布; b ) 能提供宽广的照明区域; c ) 有明显的截止边缘从而能消除眩光。
采用光学透镜也有以下方面的不足: a)光效率低(80%〜90%), 主要由材料 吸收和离焦匹配损失而导致; b )长期工作后的衰减, 主要包括紫外线引发 的衰减和热量引发的衰减; c )有黄色暈现象。使用传统光反射镜的优点在 于: a) 光效率较高(达到 95%以上); b) 紫外线、热量引发的衰减不明显; c ) 无黄色暈现象。 但传统光反射镜存在以下缺陷: a) 出光不均匀, 大部 分光能量输出集中在中心区域; b )难以提供宽角度(蝙蝠翼)光分布; c ) 有眩光问题。
如图 1所示, 美国专利申请 US2007/0201225 A1披露了蝙蝠翼光分布 的光学透镜 (参见其说明书图 2 ), 其利用光学透镜得到蝙蝠翼的光分布, 光分布角度范围宽且均匀, 但光效率相对低。
如图 2所示, 美国专利申请 US2008/0074876 A1披露了用两个独立的 光学反射镜盒来分别提供半个蝙蝠翼光分布。 其中, 两个可以相对调整的 光固件互相平行地定位, 分别作为反射镜共同产生蝙蝠翼光分布。 这种方 案利用灯具机械结构获得蝙蝠翼的光分布, 组装结构复杂。
如图 3和图 4所示, 欧洲专利申请 EP1925878 A1披露了一种气体放 电灯, 包括两个发光设备, 每个发光设备包括位于气体放电灯的朝向支架 的各侧上的独立的光学反射镜, 位置有可定向性。 气体放电灯产生蝙蝠翼 光分布, 每个发光设备在各自区域具有较大的光强, 而这两个区域可以通 过定向两个反射镜而独立地定位。 这种灯具的组装结构复杂。 发明内容
本发明的主要目的就是针对现有技术的不足, 提供一种具有简单组装 结构的光反射器, 能产生蝙蝠翼的光分布, 以使照明系统如 LED应用设备 获得均匀的宽角度的光分布, 同时还具有高的光效率。
本发明的另一目的是提供采用所述光反射器的光反射器
为实现上述目的, 本发明采用以下技术方案:
一种光反射器, 包括:
槽体, 其包括底部和由从底部延伸至顶部开口的多个侧壁, 所述顶部 开口的尺寸大于所述底部的尺寸, 所述底部具有供发光器件出光的底部开 口, 所述底部和所述侧壁的内表面为光反射面;
立体桥, 其对应所述底部开口的位置安装在所述侧壁的内侧上, 通过 反射或折射,将来自所述底部开口的集中的光能量分布到更宽角度的范围。
优选地, 所述顶部开口和所述底部开口为矩形。
优选地, 所述立体桥跨接在所述矩形的长边对应的两相对侧壁上。 优选地, 所述立体桥具有光反射面, 其将从所述底部开口射出光束的 中心部分反射到所述底部, 光线经由所述底部和所述侧壁而反射到更宽的 角度范围。
优选地, 所述立体桥包括具有透镜作用的透明块, 其将从所述底部开 口射出光束的中心部分折射到更宽的角度范围。
优选地, 所述立体桥的横截面为一个凸向所述底部的穹顶形或人字 形。
优选地, 所述立体桥的横截面为一个凸向所述底部的两侧具有拐点的 波峰形。
优选地, 所述立体桥的横截面宽度为底部开口同方向尺寸的 0. 1-0. 6 倍。
优选地, 所述立体桥的高度为所述槽体高度的 0. 3-0. 7倍。
优选地, 所述多个侧壁的内表面整体上均为凹的。
优选地, 所述槽体为对称的或为非对称的, 非对称的所述槽体的光分 布是在 90度方向上非对称的。
优选地, 所述多个侧壁中至少一个具有阶梯状层或漫射的内表面。 优选地, 所述阶梯状层包括多个拱起的弧形阶梯。
优选地, 所述槽体的光反射面和 /或所述立体桥的光反射面包含真空 沉积的铝或银。
优选地, 所述槽体为塑料模制而成。
一种照明系统, 包括一个或多个前述的光反射器, 和安装在光反射器 的底部开口处的发光器件。
优选地, 所述发光器件包括发光
根据本发明的光反射器, 安装在槽体侧壁上的立体桥, 通过反射或折 射, 将从槽体底部开口射出的集中的光能量分布到更宽角度的范围, 即将 集中于中心部位的发射光分布到侧部, 从而产生蝙蝠翼的光分布, 获得了 宽范围的光束角和很好的光强均匀性, 同时还具有传统光反射器的高光效 率等理想的光性能, 弥补了传统方案采用光学透镜的不足, 这些对于照明 设备长期工作是十分关键的。 与以往的采用多个独立的反射镜来获得蝙蝠 翼光分布的方案相比, 本发明是单独一个的光反射器, 结构上大为简化, 在光照系统中安装处理十分简单。 本发明的光反射器可以应用于各种户外 灯具 (如 LED照明设备) 的制造, 适用于各种户外宽角度光分布的照明场 合, 例如公路、 街区、 广场的照明。
附图说明
图 1为现有的一种采用光学透镜的照明系统的结构示意图; 图 2为现有的一种采用两个光反射镜的照明系统的结构示意图; 图 3a_3b 为现有的另一种采用两个光反射镜的照明系统的结构示意 图;
图 4为本发明一种实施例的结构示意图;
图 5a_5e分别为本发明实施例一的立体视图、 侧视图、 俯视图、 仰视 图和主视图 (均为透视图, 下同);
图 6为本发明实施例二的立体视图;
图 7a_7e分别为本发明实施例三的立体视图、 侧视图、 俯视图、 仰视 图和主视图;
图 8a-8e分别为本发明实施例四的立体视图、 侧视图、 俯视图、 仰视 图和主视图;
图 9a_9e分别为本发明实施例五的立体视图、 侧视图、 俯视图、 仰视 图和主视图;
图 lOa-lOe分别为本发明实施例六的立体视图、 侧视图、 俯视图、 仰 视图和主视图;
图 l la-l le分别为本发明实施例七的立体视图、 侧视图、 俯视图、 仰 视图和主视图; 图 12为本发明一种实施例采用反射面式立体桥所获得光分布曲线图; 图 13为本发明一种实施例采用透镜式立体桥所获得光分布曲线图; 图 14为本发明一种实施例在 90度方向上非对称的光分布曲线图; 图 15为本发明一种实施例应用照明系统的光照度分布示意图。
具体实施方式
以下通过实施例结合附图对本发明进行进一步的详细说明。
请参考图 4-图 l ie, 根据一种实施例的光反射器包括槽体 1和立体桥 2, 槽体 1包括底部 3和由从底部 3延伸至顶部开口 4的多个侧壁, 所述 顶部开口的尺寸大于所述底部的尺寸, 所述底部具有供发光器件出光的底 部开口 5, 所述底部和所述侧壁的内表面为光反射面; 立体桥 2对应所述 底部开口 5的位置安装在所述侧壁的内侧上, 通过反射或折射, 将来自所 述底部开口 5的集中的光能量分布到更宽角度的范围。 从而光反射器发出 的光整体上能够获得如图 12所示的蝙蝠翼的光分布。 根据实际应用情况, 在不同的实施例中, 立体桥的安装位置和桥的形状相对可变以优化光性 能, 只要立体桥能对集中在中心的光能量起到向侧部分布的作用即可。 底 部开口处的发光器件可以是 LED芯片。 在较佳的实施例中, 槽体 1的顶部 开口和底部开口均为矩形, 立体桥 2跨接在矩形的长边对应的两相对侧壁 上, 沿底部开口的宽度方向正对着底部开口的中心位置。
在一些实施例中, 立体桥可以包括覆盖有光反射表面的反射片或反射 块, 例如覆盖金属反射表面的曲面反射片, 反射片或反射块将从底部开口 射出光束的中心部分反射到槽体的底部, 这些光线进而被反射到槽体的侧 壁, 光线最终整体上以蝙蝠翼的光分布从槽体的顶部开口射出。 在另一些 实施例中, 立体桥可以包括透明块, 其作用相当于透镜, 透明块将从所述 底部开口射出光束的中心部分折射到更宽的角度范围, 而其他光能量被槽 体的侧壁反射, 同样地, 光线最终整体上以蝙蝠翼的光分布从槽体的顶部 开口射出。
优选地, 立体桥的横截面宽度为底部开口同方向尺寸的 0. 1-0. 6倍。 优选地, 立体桥的高度为所述槽体高度的 0. 3-0. 7倍。
槽体可以是对称的, 也可以是非对称的, 对于非对称的实施例, 光分 布是在 90D方向上是非对称, 以增加光利用效率并消除眩光。
槽体可以是由塑料模制而成。 槽体侧壁、 底部的光反射面可由真空沉 积的铝或银覆盖而形成。 在立体桥采用反射片或反射块的实施例中, 立体 桥的光反射面同样也可以包含真空沉积的铝或银, 或是采用其他金属层的 反射面。
以下举例描述不同实施例中一些更细致的变形。
请参考图 5a-5e, 在实施例一中, 槽体为对称式设计, 槽体的底部和 顶部开口都是矩形, 在形状上, 各侧壁的内表面整体上都是具有近似弧度 的凹面, 形成碗状。 立体桥是覆盖有光反射表面的反射片, 该反射片的横 截面为一个凸向所述底部的穹顶形, 立体桥靠近顶部开口处。 该反射片可 按照中央轴线划分成朝向底部开口的两个对称曲面,分别对光线进行反射。
请参考图 6, 在实施例二中, 与实施例一不同之处在于, 反射片的横 截面为一个凸向所述底部的人字形。
请参考图 7a_7e, 在实施例三中, 与实施例一不同之处在于, 立体桥 是覆盖有光反射表面的反射块, 该反射块的横截面为一个凸向所述底部的 波峰形, 其两侧即在更近顶部开口处具有曲面拐点。 此外, 反射块安装于 侧壁中部。
请参考图 8a-8e, 在实施例四中, 槽体仍为对称式设计, 但立体桥采 用具有透镜作用的透明块。 该透明块安装于靠近顶部开口处, 其横截面为 一个凸向所述底部的波峰形, 其两侧即在更近顶部开口处具有曲面拐点。
请参考图 9a_9e, 在实施例五中, 与实施例四不同之处在于, 透明块 的横截面为一个凸向所述底部的穹顶形。 此外, 透明块安装于侧壁中部。
请参考图 10a-10e, 在实施例六中, 与实施例三不同之处在于, 各侧 壁具有阶梯状层的内表面, 这样可以提高光束的均匀性。 优选地, 阶梯状 层包括多个拱起的弧形阶梯, 弧形半径可适应性调整, 有利于进一步提高 光束的均匀性。
各侧壁也可以具有漫射内表面, 同样能提高光束的均匀性。
请参考图 l la-l le, 在实施例七中, 与实施例三不同之处在于, 槽体 为一种非对称式设计, 槽体的底部和顶部开口仍都是矩形, 但在形状上, 槽体的一长侧壁的内表面整体上是具有弧度的凹面, 而另一长侧壁的内表 面为平面。这样获得的光分布是在 90度方向上非对称的,可以增加光利用 效率并消除眩光。
光场分布一般可分为 0度和 90度两个方向, 它们相互垂直。 前述实 施例在 0度的光场分布方向上是对称的,而在 90度方向上则可以有对称和 非对称两种设计。
前述实施例的光反射器可用于照明系统,例如,采用 LED的照明设备。 在一个实施例中, 照面系统包括多个光反射器和多个与光反射器相配合安 装的 LED芯片。
请参见图 12-图 15, 对优选实施例的光学仿真结果如下:
光效率为: 93% ;
光束角度 (FWHM) 为: 125。 (0D) 56 (90D) ;
眩光级别为: 80D : 25 cd/klm ; 90D : 0 cd/klm;
光分布属于截止类型;
在 8m高度的有效光照区域为:
大于 30mX 12m, 对于 0. 0751x (对于单个光反射器);
大于 30mX 12m, 对于 7. 51x (对于整盏灯);
大于 CJJ45-2006标准所规定的, 对 8m高度的截止类型的灯光的 24m 范围要求。
另外, 采用如下路灯配置:
灯间隔 24m;
位置 单侧;
输出通量 100001m;
高 8m;
安装角度 20° 。
所获得道路照明情况如下:
优选实施例的照明系统 CJJ45-2006 标准 均匀性 0. 62 ^0. 3
平均通量 25
TI (%) 6 10
可见本实施例的照明系统各项光性能均优于 CJJ45-2006 标准。 以上内容是结合具体的优选实施方式对本发明所作的进一步详细说 明, 不能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术 领域的普通技术人员来说, 在不脱离本发明构思的前提下, 还可以做出若 干简单推演或替换, 都应当视为属于本发明的保护范围。

Claims

权 利 要 求 书
1. 一种光反射器, 其特征在于, 包括:
槽体, 其包括底部和由从底部延伸至顶部开口的多个侧壁, 所述顶部 开口的尺寸大于所述底部的尺寸, 所述底部具有供发光器件出光的底部开 口, 所述底部和所述侧壁的内表面为光反射面;
立体桥, 其对应所述底部开口的位置安装在所述侧壁的内侧上, 通过 反射或折射,将来自所述底部开口的集中的光能量分布到更宽角度的范围。
2. 根据权利要求 1所述的光反射器, 其特征在于, 所述顶部开口和 所述底部开口为矩形。
3. 根据权利要求 2所述的光反射器, 其特征在于, 所述立体桥跨接 在所述矩形的长边对应的两相对侧壁上。
4. 根据权利要求 1所述的光反射器, 其特征在于, 所述立体桥具有 光反射面, 其将从所述底部开口射出光束的中心部分反射到所述底部, 光 线经由所述底部和所述侧壁而反射到更宽的角度范围。
5. 根据权利要求 1所述的光反射器, 其特征在于, 所述立体桥包括 具有透镜作用的透明块, 其将从所述底部开口射出光束的中心部分折射到 更宽的角度范围。
6. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 立体桥的横截面为一个凸向所述底部的穹顶形或人字形。
7. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 立体桥的横截面为一个凸向所述底部的两侧具有拐点的波峰形。
8. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 立体桥的横截面宽度为底部开口同方向尺寸的 0. 1-0. 6倍。
9. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 立体桥的高度为所述槽体高度的 0. 3-0. 7倍。
10. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 多个侧壁的内表面整体上均为凹的。
11. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 槽体为对称的或为非对称的, 非对称的所述槽体的光分布是在 90 度方向 上非对称的。
12. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 多个侧壁中至少一个具有阶梯状层或漫射的内表面。
13. 根据权利要求 12所述的光反射器, 其特征在于,所述阶梯状层包 括多个拱起的弧形阶梯。
14. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 槽体的光反射面和 /或所述立体桥的光反射面包含真空沉积的铝或银。
15. 根据权利要求 1-5中任一项所述的光反射器, 其特征在于, 所述 槽体为塑料模制而成。
16. 一种照明系统, 包括一个或多个根据前述权利要求中任一项所述 的光反射器, 和安装在光反射器的底部开口处的发光器件。
17. 根据权利要求 16所述的照明系统, 其特征在于,所述发光器件包 括发光二极管。
8
PCT/CN2011/074439 2010-11-18 2011-05-20 光反射器和具有该光反射器的照明系统 WO2012065417A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050018427A1 (en) * 2003-07-10 2005-01-27 Barry White Luminaire
CN101093279A (zh) * 2005-02-08 2007-12-26 友达光电股份有限公司 背光组件的碟形透镜与点状光源
CN101178514A (zh) * 2007-11-23 2008-05-14 刘俊波 宽幅匀光背光源模块
CN101476681A (zh) * 2009-01-23 2009-07-08 华南师范大学 反光面自散热led室内照明灯
CN101592311A (zh) * 2009-05-08 2009-12-02 杨传银 带反光器的led照明反光单元及照明反光装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050018427A1 (en) * 2003-07-10 2005-01-27 Barry White Luminaire
CN101093279A (zh) * 2005-02-08 2007-12-26 友达光电股份有限公司 背光组件的碟形透镜与点状光源
CN101178514A (zh) * 2007-11-23 2008-05-14 刘俊波 宽幅匀光背光源模块
CN101476681A (zh) * 2009-01-23 2009-07-08 华南师范大学 反光面自散热led室内照明灯
CN101592311A (zh) * 2009-05-08 2009-12-02 杨传银 带反光器的led照明反光单元及照明反光装置

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