WO2013104156A1 - 使定向光束散射的方法和装置以及照明灯具 - Google Patents

使定向光束散射的方法和装置以及照明灯具 Download PDF

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Publication number
WO2013104156A1
WO2013104156A1 PCT/CN2012/074032 CN2012074032W WO2013104156A1 WO 2013104156 A1 WO2013104156 A1 WO 2013104156A1 CN 2012074032 W CN2012074032 W CN 2012074032W WO 2013104156 A1 WO2013104156 A1 WO 2013104156A1
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WIPO (PCT)
Prior art keywords
light
transmissive film
scattering
light beam
directional
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PCT/CN2012/074032
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English (en)
French (fr)
Inventor
刘武强
Original Assignee
Liu Wuqiang
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Publication of WO2013104156A1 publication Critical patent/WO2013104156A1/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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/005—Electric lighting devices with self-contained electric batteries or cells the device being a pocket lamp
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/006—Refractors for light sources applied to portable lighting devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape

Definitions

  • the present invention relates to a method and apparatus for scattering a directional beam and a luminaire, and more particularly to a method and apparatus for scattering a directional beam using a permeable film and a luminaire having a light transmissive film.
  • a flashlight is a hand-held lighting tool that is mainly used for outdoor travel or lighting without a night light.
  • the flashlight In order to maximize the brightness of the object with the lowest power, the flashlight has a focusing mirror to make all the light. They are all shot in the same direction, giving the highest brightness of the illuminated surface per unit area.
  • the early flashlights used tungsten lamps for bulbs, and the batteries used dry batteries. Therefore, their working time is very short. With the continuous development of LED lighting technology, more and more flashlights use large-capacity lithium-ion batteries. Therefore, the lighting time of the flashlight is also significantly increased.
  • the flashlight can be used not only as a small-area lighting fixture, but also as a large-area lighting fixture.
  • the present invention provides a method and apparatus for scattering a directional beam and a lighting fixture.
  • the present invention provides a method for scattering a directional beam, characterized in that the method comprises: providing a light transmissive film on a path of beam transmission, the light transmissive film comprising two faces, one surface being a smooth plane and the other surface being evenly distributed a plurality of protrusions having a shape of a small triangular prism, wherein the bottom surfaces of the protrusions of the triangular prism shape are all on the same plane;
  • the light beam is incident from the convex side of the transparent film and is emitted from the smooth surface;
  • the beam is vertical.
  • the present invention also provides a device for scattering a directional light beam, characterized in that the device comprises a light transmissive film, the light transmissive film is disposed on a path of beam transmission, the light transmissive film comprises two faces, one side is smooth In the plane, the other surface is uniformly distributed with a plurality of protrusions having a shape of a small triangular prism, and the bottom surfaces of the protrusions of the triangular prism shape are all on the same plane, and the light-transmissive film has a convex side opposite to the incident direction of the light beam.
  • the beam is vertical.
  • the present invention further provides a lighting fixture comprising: a device capable of emitting a directional beam, wherein the lighting fixture further comprises means for scattering a directional beam, the means for scattering the directional beam comprising a light transmissive film
  • the light film is disposed on a path of beam transmission, and the light transmissive film comprises two faces, one surface is a smooth plane, and the other surface is evenly distributed with a plurality of protrusions of a microtriangular shape, and the bottom surface of the protrusion of the triangular prism shape is On the same plane, the light-transmissive film has a convex side opposite to the incident direction of the light beam.
  • the device capable of emitting a directional beam is a flashlight, and the light-transmissive film is rolled into a cylindrical shape, and one end of the cylindrical light-transmissive film is open to the light-emitting port of the flashlight.
  • the other end opening of the cylindrical light-transmissive film is further provided with a spherical mirror, and the reflecting surface of the spherical mirror is opposite to the light-emitting opening of the flashlight.
  • the present invention can not only scatter the directional light beam of the flashlight, but also increase the area of illumination, thereby changing the use of the flashlight, and the method is simple and low in cost.
  • the device for directional beam scattering of the present invention can be externally connected to the light exit port of the flashlight, thereby turning the flashlight into a large-area lighting fixture, and when the device is removed, the lighting fixture of the present invention can be used as a flashlight, not only The lighting fixture of the invention is widely used, and is only a disassembly of the cartridge The piece can be used for the purpose and it is very easy to use.
  • the LED spotlight can be converted into a lamp tube, so that the LED lamp bead is placed around the columnar body as in the prior art, and the light is more soft.
  • the present invention proposes a single tube effective to scatter light emitted by the point source, thereby causing the emitted light. More soft and even.
  • Figure 1 is a side elevational view showing the microstructure of the light transmissive film of the present invention
  • FIG. 2 is a plan view showing the microstructure of the light transmissive film of the present invention.
  • FIG. 3 is a side cross-sectional structural view of a lighting fixture according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural view showing a side view of a lighting fixture according to Embodiment 2 of the present invention.
  • Figure 5 is a plan view of a lighting fixture according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic diagram of an optical principle according to Embodiment 1 of the present invention.
  • Figure 7 is a schematic view showing the optical principle of Embodiment 2 of the present invention.
  • the present invention provides a method and apparatus for scattering a directional beam and a luminaire, the invention being further described below in conjunction with the specific embodiments and the accompanying drawings.
  • the embodiment provides a lighting fixture.
  • the lighting fixture includes a flashlight 11 and a device 12 for scattering the directional light beam.
  • the device 12 for directional beam scattering comprises a roll of cylindrical shape.
  • a light transmissive film 121 and a spherical mirror 122 the two ends of the cylindrical light transmissive film are open, and one end opening 1211 is sleeved on the light exit opening 111 of the flashlight, and the flashlight and the cylindrical transparent film pass through Threaded connection for easy removal.
  • the other end opening 1212 is provided with a spherical mirror 122, and the spherical mirror 122 blocks the opening 1212.
  • the reflecting surface 1221 of the spherical mirror is opposite to the light exit opening 111 of the flashlight.
  • the structure of the transparent film 121 is as shown in FIG. 1 and FIG. 2, and the transparent film 121 includes two faces, one face is a smooth plane 1211, and the other face 1212 is evenly distributed with a plurality of microprisms of the same size.
  • a transparent protrusion 12121 the light transmissive film is made of a resin material, the protrusion is also a resin, and the bottom surfaces of the triangular prism-shaped protrusions 12121 are all on the same plane 1212, and all the protrusions 12121 and the protrusions
  • the central axes 121211 parallel to the two sides are parallel to each other.
  • the centers of all the projections 12121 are joined to form a mesh, and each of the grids is a square of the same size.
  • the flashlight 11 emits light from the light exit 111 of the flashlight due to the focus mirror disposed around the bulb, including a parallel beam of the main portion, and a small portion of the concentric beam, the light from the flashlight.
  • the port 111 diffuses to the periphery, and the emitted parallel beam reaches the mirror 122, is reflected by the mirror 122, and then diffuses to the periphery.
  • the light emitted from the light exit port 111 of the flashlight is a convex surface 1212 of the opposite light transmissive film. Different angles are incident on the protrusion 12121 of the surface, and the light is refracted by the protrusion and is emitted from the smooth surface 1211 of the light-transmissive film, and the emitted light is scattered.
  • the device for directional beam scattering of the present invention can be externally connected to the light exit port of the flashlight, thereby turning the flashlight into a large-area lighting fixture, and when the device is removed, the lighting fixture of the present invention can be used as a flashlight, not only The lighting fixture of the present invention is widely used, and only the disassembly fitting of the cartridge can achieve the purpose, and it is very easy to use.
  • Example 2
  • the lighting fixture includes a plurality of LED light groups 21, and the plurality of LED light groups are disposed on a cylindrical bracket 22, and the hooks are distributed in a cylindrical shape.
  • the lighting fixture further comprising means 12 for scattering the directional light beam, the means 12 for scattering the directional light beam comprising a light-transmissive film 121 rolled into a cylindrical shape
  • the cylindrical transparent film 121 is sleeved outside the cylindrical bracket 22, and the cylindrical bracket 22 is located at the inner center of the cylindrical transparent film 121, and one end of the cylindrical transparent film 121
  • the other end of the cylindrical transparent film 121 is hollowed out to the head of the cylindrical bracket 22, and is designed to enhance air convection and improve the heat dissipation effect.
  • the structure of the transparent film 121 is as shown in FIG. 1 and FIG. 2, and the transparent film 121 includes two faces. One surface is a smooth surface 1211, and the other surface 1212 is evenly distributed with a plurality of transparent protrusions 12121 of the same size and a small triangular prism shape.
  • the transparent film is made of a resin material, and the protrusion is also a resin, and the prism is shaped like a prism.
  • the bottom surfaces of the protrusions 12121 are all on the same plane 1212, and the central axes 121211 of all the protrusions 12121 that are parallel to the two sides of the protrusions are parallel to each other.
  • the centers of all the projections 12121 are joined to form a mesh, and each of the grids is a square of the same size.
  • the light emitted by the LED lamp group on the cylindrical support 22 is perpendicular to the light-transmissive film having the convex surface 1212, and the light perpendicularly directed toward the light-transmissive film is refracted by the triangular prism-shaped protrusion.
  • the smooth surface 1211 of the film is emitted, and the emitted light is scattered. Since it can turn the light from the direct light of the LED into scattered light, it can achieve a very good light-shaping effect.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种使定向光束散射的方法，包括：在光束传输的路径上设置透光膜（121），该透光膜（121）包括两个面，一面为光滑平面（1211），另一面（1212）均匀分布有多个微小三棱镜形状的凸起（12121），该三棱镜形状的凸起（12121）的底面均在同一平面（1212）上，光束从该透光膜（121）具有凸起（12121）的一面（1212）射入，从光滑面（1211）射出，所有凸起（12121）的与该凸起（12121）的两侧面平行的中轴线与光束的光线相交。一种使定向光束散射的装置，该装置包括该透光膜（121），该透光膜（121）设置于光束传输的路径上。一种照明灯具，包括能够发射定向光束的装置和该使定向光束散射的装置。该方法、装置及照明灯具采用透光膜（121）散射手电筒的定向光束，使其照明面积增加，从而改变手电筒的用途。

Description

使定向光束散射的方法和装置以及照明灯具
【技术领域】
本发明涉及使定向光束散射的方法和装置以及照明灯具， 特别涉及利用透 光膜使定向光束散射的方法和装置以及具有透光膜的照明灯具。 【背景技术】
手电筒是一种手持式照明工具， 主要用于户外旅行或者夜晚没灯的情况下 的照明， 为了使最少的电能照射物体的亮度最高， 手电筒都均有一个聚焦反射 镜， 目的是使所有的光线都朝同样的方向射出， 使单位面积的照射面亮度最高。 早期的手电筒因为灯泡采用的 钨灯， 而且电池也是采用的干性电池， 所以其 工作时间很短， 随着 LED照明技术的不断发展， 越来越多的手电筒采用了大容 量的锂离子电池， 所以手电筒的照明时间也显著增加， 手电筒不仅仅可以作为 小面积的照明灯具使用， 还可以作为大面积的照明灯具使用。
而目前所有的手电筒都因为安装有聚焦反射镜而使得光线只能沿着一个方 向照射， 不能发散到四周， 如果将反射镜拆下不仅麻烦， 而且还会因为光源无 保护而容易损坏， 所以就必要开发一种工具， 将手电筒发出的光线改变传输方 向， 使其向四周发散照射， 能够充当普通的照明灯具使用。 【发明内容】
为了解决上述的技术问题， 本发明提供了一种使定向光束散射的方法和装 置以及一种照明灯具。
本发明提供一种使定向光束散射的方法， 其特征在于， 该方法包括： 在光束传输的路径上设置透光膜， 所述透光膜包括两个面， 一面为光滑平 面， 另一面均匀分布有多个微小三棱镜形状的凸起， 所述三棱镜形状的凸起的 底面均在同一平面上；
光束从透明膜的具有凸起的一面射入， 从光滑面射出； 束垂直。
本发明还提供一种使定向光束散射的装置， 其特征在于， 该装置包括透光 膜， 所述透光膜设置于光束传输的路径上， 所述透光膜包括两个面， 一面为光 滑平面， 另一面均匀分布有多个微小三棱镜形状的凸起， 所述三棱镜形状的凸 起的底面均在同一平面上， 所述透光膜具有凸起的一面与光束的射入方向相对。
束垂直。
本发明另提供一种照明灯具， 包括能够发射定向光束的装置， 其特征在于， 该照明灯具还包括一使定向光束散射的装置， 所述使定向光束散射的装置包括 透光膜， 所述透光膜设置于光束传输的路径上， 所述透光膜包括两个面， 一面 为光滑平面， 另一面均匀分布有多个微小三棱镜形状的凸起， 所述三棱镜形状 的凸起的底面均在同一平面上， 所述透光膜具有凸起的一面与光束的射入方向 相对。 所述能够发射定向光束的装置为一手电筒， 所述透光膜卷成一圓筒形， 所 述圓筒形透光膜的一端开口套接于所述手电筒的出光口。
所述圓筒形透光膜的另一端开口还设置有一球面反射镜， 所述球面反射镜 的反射面与手电筒的出光口相对。
相较于之前的技术， 本发明有益的技术效果在于：
本发明通过采用透光膜将平行光或者点光源变成散射光， 不仅能够使手电 筒的定向光束散射， 使其照明的面积增加， 从而能够改变手电筒的用途， 方法 筒单， 成本低廉。
通过本发明的使定向光束散射的装置能够外接在手电筒的出光口， 从而使 手电筒变成大面积的照明灯具， 而当将该装置取下时， 本发明的照明灯具又可 以作手电筒用， 不仅使得本发明的照明灯具用途广泛， 而且只是筒单的拆卸配 件即可达到目的， 使用起来非常容易。
通过本发明的使定向光束散射的方法， LED射灯可以转变成灯管， 从而无 需像现有的技术一样， 将 LED灯珠设置在柱状体的四周， 而且光线反而更加柔 和。
另一方面， 由于目前的 LED灯都属于点光源， 发射出的光非常刺眼， 不适 合于照明， 而本发明提出了一种筒单有效的将点光源发出的光散射， 从而使发 出的光线更加柔和均匀。
【附图说明】
图 1为本发明透光膜微观结构的侧面视图；
图 2为本发明透光膜微观结构的俯视图；
图 3为本发明实施例 1的照明灯具侧面剖视结构示意图；
图 4为本发明实施例 2的照明灯具侧面剖视的结构示意图；
图 5为本发明实施例 2的照明灯具俯视图；
图 6为本发明实施例 1的光学原理示意图；
图 7为本发明实施例 2的光学原理示意图。
【具体实施方式】
本发明提供了一种使定向光束散射的方法和装置以及照明灯具， 下面结合 具体实施例和说明书附图对本发明进行进一步说明。
实施例 1
本实施例提供一种照明灯具， 如图 3所示， 该照明灯具包括一手电筒 11和 一种使定向光束散射的装置 12,所述使定向光束散射的装置 12包括一卷成圓筒 形的透光膜 121和一球面反射镜 122, 所述圓筒形的透光膜的两端开口， 一端开 口 1211套接于所述手电筒的出光口 111 , 所述手电筒与圓筒形透光膜通过螺纹 方式连接， 方便拆卸。 另一端开口 1212设置球面反射镜 122, 所述球面反射镜 122堵住该开口 1212, 所述球面反射镜的反射面 1221与手电筒的出光口 111相 对。 所述透光膜 121的结构如图 1和图 2所示， 所述透光膜 121 包括两个面， 一个面为光滑平面 1211 ,另一面 1212均匀分布有多个相同大小的微小三棱镜形 状的透明的凸起 12121 , 所述透光膜为树脂材质， 所述凸起也为树脂， 所述三棱 镜形状的凸起 12121的底面均在同一平面 1212上， 所有凸起 12121的与所述凸 起的两侧面平行的中轴线 121211相互平行。 所有凸起 12121的中心连接形成网 状， 每个网格均为相同大小的正方形。
如图 6所示， 手电筒 11由于设置在灯泡四周的聚焦反射镜的作用， 从手电 筒的出光口 111 射出的光线包括占主要部分的平行光束， 同时还有少部分的同 心光束， 从手电筒的出光口 111 向四周扩散， 射出的平行光束到达反射镜 122 后， 又被反射镜 122反射后向四周扩散， 最后从手电筒的出光口 111射出的光 线均以相对透光膜的具有凸起的面 1212不同的角度射到该面的凸起 12121上， 光线经凸起折射后从透光膜的光滑面 1211射出， 射出的光线呈散射状态。
通过本发明的使定向光束散射的装置能够外接在手电筒的出光口， 从而使 手电筒变成大面积的照明灯具， 而当将该装置取下时， 本发明的照明灯具又可 以作手电筒用， 不仅使得本发明的照明灯具用途广泛， 而且只是筒单的拆卸配 件即可达到目的， 使用起来非常容易。 实施例 2
本实施例提供另外一种照明灯具，如图 4-5所示，该照明灯具包括多个 LED 灯组 21 , 多个 LED灯组设置在一圓柱形支架 22上， 并且均勾分布在圓柱形支 架 22的四周， 圓柱形支架 22的一端连接有导线 221 , 该照明灯具还包括使定向 光束散射的装置 12,所述使定向光束散射的装置 12包括一卷成圓筒形的透光膜 121 , 所述圓筒形的透光膜 121套接在圓柱形的支架 22外， 圓柱形的支架 22位 于圓筒形透光膜 121的内部中心， 所述圓筒形的透光膜 121的一端与圓柱形支 架 22的根部 221镂空连接， 所述圓筒形透光膜 121的另一端与圓柱形支架 22 的头部镂空连接， 通过两头镂空设计， 目的是为了加强空气对流， 提高散热效 果。
所述透光膜 121的结构如图 1和图 2所示， 所述透光膜 121 包括两个面， 一个面为光滑平面 1211 ,另一面 1212均匀分布有多个相同大小的微小三棱镜形 状的透明的凸起 12121 , 所述透光膜为树脂材质， 所述凸起也为树脂， 所述三棱 镜形状的凸起 12121的底面均在同一平面 1212上， 所有凸起 12121的与所述凸 起的两侧面平行的中轴线 121211相互平行。 所有凸起 12121的中心连接形成网 状， 每个网格均为相同大小的正方形。
如图 7所示，圓柱形支架 22上的 LED灯组发出的光与透光膜具有凸起的面 1212垂直， 垂直射向透光膜的光线经过三棱镜形状的凸起的折射后从透光膜的 光滑面 1211射出，射出的光线呈散射状态。 由于能够将 LED直射处的光变成散 射光， 能够起到非常好的匀光效果。
但并不能因此而理解为对本发明专利范围的限制。 应当指出的是， 对于本领域 的普通技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干变形和 改进， 这些都属于本发明的保护范围。 因此， 本发明专利的保护范围应以所附 权利要求为准。

Claims

权 利 要 求 书 WO 2013/104156 PCT/CN2012/074032
1. 一种使定向光束散射的方法， 其特征在于， 该方法包括：
在光束传输的路径上设置透光膜， 所述透光膜包括两个面， 一面为光滑平 面， 另一面均匀分布有多个微小三棱镜形状的凸起， 所述三棱镜形状的凸起的 底面均在同一平面上；
光束从透明膜的具有凸起的一面射入， 从光滑面射出；
2.根据权利要求 1所述使定向光束散射的方法， 其特征在于， 所有凸起的与 所述凸起的两侧面平行的中轴线相互平行。
3.根据权利要求 2所述使定向光束散射的方法， 其特征在于， 所述光束为平
4.一种使定向光束散射的装置， 其特征在于， 该装置包括透光膜， 所述透光 膜设置于光束传输的路径上， 所述透光膜包括两个面， 一面为光滑平面， 另一 面均匀分布有多个微小三棱镜形状的凸起， 所述三棱镜形状的凸起的底面均在 同一平面上， 所述透光膜具有凸起的一面与光束的射入方向相对。
5.根据权利要求 4所述使定向光束散射的装置， 其特征在于， 所有凸起的与 所述凸起的两侧面平行的中轴线相互平行。
6.根据权利要求 5所述使定向光束散射的装置， 其特征在于， 所述光束为平
7.—种照明灯具， 包括能够发射定向光束的装置， 其特征在于， 该照明灯具 还包括一使定向光束散射的装置， 所述使定向光束散射的装置包括透光膜， 所 述透光膜设置于光束传输的路径上， 所述透光膜包括两个面， 一面为光滑平面， 另一面均匀分布有多个微小三棱镜形状的凸起， 所述三棱镜形状的凸起的底面 均在同一平面上， 所述透光膜具有凸起的一面与光束的射入方向相对。
8.根据权利要求 7所述的照明灯具， 其特征在于， 所有凸起的与所述凸起的 两侧面平行的中轴线相互平行。
9.根据权利要求 7所述的照明灯具， 其特征在于， 所述能够发射定向光束的 装置为一手电筒， 所述透光膜卷成一圓筒形， 所述圓筒形透光膜的一端开口套 接于所述手电筒的出光口。 权 利 要 求 书
WO 2013/104156 PCT/CN2012/074032
10.根据权利要求 9所述的照明灯具， 其特征在于， 所述圓筒形透光膜的另 一端开口还设置有一球面反射镜， 所述球面反射镜的反射面与手电筒的出光口 相对。
PCT/CN2012/074032 2012-01-13 2012-04-14 使定向光束散射的方法和装置以及照明灯具 WO2013104156A1 (zh)

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