CN104321585B - 灯具 - Google Patents
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- CN104321585B CN104321585B CN201280072097.6A CN201280072097A CN104321585B CN 104321585 B CN104321585 B CN 104321585B CN 201280072097 A CN201280072097 A CN 201280072097A CN 104321585 B CN104321585 B CN 104321585B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
- F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
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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
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
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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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
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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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/508—Cooling arrangements characterised by the adaptation for cooling of specific components of electrical circuits
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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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
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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
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/005—Sealing arrangements therefor
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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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
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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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/041—Optical design with conical or pyramidal surface
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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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/08—Optical design with elliptical curvature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
- F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
- F21S8/038—Lighting devices intended for fixed installation of surface-mounted type intended to be mounted on a light track
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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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
- F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting device
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- 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
- F21Y2101/00—Point-like light sources
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- 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]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
本发明涉及一种带有一个光源和一个前置透镜(12)的灯具,该光源优选是一个发光二极管(14),该发光二极管被一个反射器(11)包围,该反射器具有截锥形或旋转椭球的形状。为了在尽可能小的光损失下能够在不同的间距下可变地设定均匀的光分布,在此提出,将该前置透镜实施为菲涅尔透镜,该菲涅尔透镜安排在该反射器的壳体面之内并且相对于该光源是可偏移的。
Description
技术领域
本发明涉及一种具有一个光源和一个前置透镜的灯具,该光源优选是一个发光二极管,该发光二极管被一个反射器包围,该反射器具有截锥形或旋转椭球的形状。
背景技术
为了创造感觉舒适的房间照明,必须考虑多种因素。除了在适当时可设定的光源亮度和该光源用来进行发射的所谓的色温之外,尤其希望大体上均匀的照明,也就是在一个预先给定的空间区段或平面区段中基本上相等的光强度。
无源光学构件是透镜,其中基本区分成所谓的汇聚透镜与发散透镜。理论上一个汇聚透镜(光源安排在其焦点上)可以产生平行光。由于在实践中不存在点状光源也不存在理想的汇聚透镜,为了进行大面积照明可能会需要对应地大且重的汇聚透镜。在实践中,人们因此可以转而使用由多个汇聚透镜和多个发散透镜组成的透镜系统。此类透镜系统的缺点在于相对较大的构造高度。
一个菲涅尔透镜或更准确地说一个菲涅尔分级透镜(Fresnelsche Stufenlinse)具有至少一个、大多数情况下多个环状安排的、具有弯曲表面的级。这些环形段的光学有效的表面对应于一个汇聚透镜的环形部分。为了不通过这些级产生干扰性折射和反射,大多数情况下将这些级安排为平行于光的主展宽方向。菲涅尔分级透镜的优点尤其在于其更小的构造高度以及实际上更小的重量。此 类分级透镜经常与所谓的散射板组合,由此产生一种针对性的散射效果。尤其通过散射板避免了光源通过透镜在某一个空间距离处成像。
还已知的是,通过改变光源与透镜的距离来改变出射光的锥角度。
另一个用于避免光损失的措施在于,通过一个反射器来捕捉侧向和反向的出射光并且将其引导到一个透镜或透镜系统或菲涅尔透镜上。反射器与光源和透镜的组合的最简单形式能够在根据现有技术已知的手电筒中找到。其中将相对于光源可偏移的反射器体在光离开侧上与一个汇聚透镜牢固相连,该汇聚透镜同时向外保护该反射器免受污染和湿气影响。锥角度的可调节的范围是通过偏移行程来限制的。只要在此选择了反射器相对于光源的较大的偏移行程,这在大多数情况下就是以无法再实现均匀的光出射为代价的。
发明内容
本发明的目的是改进开篇所述的灯具,使得在尽可能小的光损失下在不同的距离处能够可变地设定均匀的光分布。
这个目的是通过根据以下措施实现的。根据本发明,该前置透镜形成为菲涅尔透镜(菲涅尔分级透镜),该菲涅尔透镜安排在该反射器的(内部)壳体面之内并且相对于该光源是可偏移的;该反射器(11)和该菲涅尔透镜(12)一体式地彼此相连;该菲涅尔透镜(12)安排在一个管状的本体部分(13)的末端侧,该本体部分同时形成为用于直线偏移的引导件;该发光二极管(14)安排在一个向外直到多个通气通道为止被封闭的空间(24)中,其壁一面通过该管状的本体部分(13)形成并且另一面通过将其固定的电路板形成。
菲涅尔分级透镜的选择使得该灯具的平面构造方式成为可能,该 灯具以对应的方式也具有(相对于透镜系统)更小的重量。
菲涅尔分级透镜在该反射器的壳体面之内的安排以有利的方式提供了如下可能性:从该光源、尤其该发光二极管出射的光的仅一个选定的内部区域通过该菲涅尔透镜中断,而从其侧向出射的光锥区域直接碰撞该反射器的反射面,从该反射面向前反射。通过推移菲涅尔透镜产生了不同的出射特征。这尤其在如下情况下是有意义的:同一个灯具要安排在不同的高度的空间中或者在不同的空间高度中,然后对应于该灯具的位置,该光分布通过推移该菲涅尔透镜来优化。
该反射器和菲涅尔透镜一体式地彼此相连。通过这种措施,能够实质上简化可操作性并且使得安装更加廉价。
该菲涅尔透镜安排在一个管状的本体部分的末端侧,该本体部分同时形成为用于直线偏移的引导件。这个管与该反射器外壳同心放置,该反射器外壳具有旋转椭球或锥形的形状。出于光学的原因,优选使用锥形。还优选的是,该反射器由聚碳酸酯组成。
根据本发明的另一个设计,该LED安排在一个形成为空心圆柱体的外壳中,该外壳具有多个环形的、基本上在整个高度上延伸的腔室,这些腔室允许一种烟囱效应式(kamineffektartige)的气流。尤其用于所采用的LED的LED驱动器安排在这些空气流通的腔室之一中。
迄今为止所开发的具有大功率的发光二极管需要冷却,这种冷却根据现有技术应当是通过冷却体来保证的。应当将向那里流动的热排出到外部空气的这些冷却体大多数情况下具有大面积的臂(Arme),这些臂违反了所希望的美观的灯具设计。
相反,通过所详述的本发明的设计,充分利用了电流效应,其中在该外壳的内部或者在这些环形腔室的内部产生的受热的空气向上流动并且在那里通过所设置的开口流出。以这种方式方法冷却了该 LED驱动器。
为了冷却安排在电路板上向外遮蔽的LED,使用了一个开口,该开口向该封闭的空间中开放,该LED位于该空间中并且该空间向上开放。空气送入通过一个通道提供,该通道同样导向该LED所安排的封闭的腔室中,使得吸入的新鲜空气接收热量并且向上排出。因此该冷却系统涉及纯粹通过气流的散热。
附图说明
图1根据本发明的灯具的透视图,
图2相同的透视图,作为图1中沿线L-L的部分截面图,
图3和图4具有不同设置的本发明灯具的两个纵截面图,
图5和图6和图7由一个反射器以及一个菲涅尔分级透镜组成的单元的不同视图,以及
图8用于接收形成腔室的区段的一个保持件的视图。
具体实施方式
如从图1可以看出的,所示的灯具由一个圆柱形的、形成为空心体10的灯具外壳组成,该灯具外壳具有一个用于将该灯具紧固在一个挂绳、挂钩或者类似物处的装置101。在该空心体下方安排有一个反射器11,该反射器在此情况下形成为截锥形。该反射器与一个菲涅尔分级透镜12形成一个一体式的零件,该透镜紧固并且安排在一个管状的本体部分13中。管状的本体部分13与该反射器一起相对于该空心体10是可偏移的。因为LED 14在该空心体10的足部安排在一个电路板上,所以可以通过反射器11在双箭头15方向上的偏移来改变LED 14与菲涅尔透镜的距离。反射器11由一种聚碳酸酯组成。 反射通过全反射或者通过镜面内反射来实现。管状的本体部分13沿着它部分地贴靠的外圆柱体16以可偏移的方式被引导。在空心体10中还安排有一个LED驱动器17,其中在该空心体10的空腔中通过所存在的分隔壁形成了不同的区段式的腔室。在向上开放的更外部的区段腔室18之一中,在箭头181方向上的上升空气流为主导,使得在腔室18中通过该LED驱动器加热的空气向上提升,在此该空气可以通过存在的开口182流出。
在该空心体10的中部存在多个彼此并排的腔室,其中在一个更外部的腔室19中,在箭头191方向上作用的空气上升流动占主导。这个腔室在一个上部开口20中开放,相反地,一个位于其附近的腔室21通过开口22抽吸向下流动的空气,因为通过在箭头191方向上的空气上升运动产生了一个抽吸效应(Sogwirkung)。
在管状的本体部分13与外圆柱体16之间设置有一个用于密封的硅酮环23。这个硅酮环的作用是,从已经详述的排出热量的气流的方向看,将该内部空间24向外隔开。尤其以此保护了二极管免于污染和湿气。
在适当时,反射器11可以借助于一个环形的保持件与该外圆柱体16可松脱地夹持在一起。
图8以一个示意图示出了一个型材25,该型材细分成不同的腔室26、27和28,这些腔室在该空心体10的构造高度上延伸。在腔室26中例如安排有一个LED驱动器,相反地,腔室27和28被设置为用于对应的空气上升流动和空气下降流动。根据图8的型材与图1至图3中的图示的差别仅在于此。
本发明的实质特征是该相对于LED可移动的菲涅尔透镜的可偏移的安排,使得能够设定不同的距离,这些距离产生了不同的和匹配 相应需求的射线特征。于是可以将该灯具用于有针对性的书桌或餐桌照明,也同样用于悬挂式的空间照明(后者在适当时涉及形成一个照明系统的多个灯具),也就是说相对于待照亮的表面距离不同。
由发光二极管14发出的射线部分地碰撞该菲涅尔分级透镜12,在此除了垂直碰撞的光线之外该射线中断。侧向地通过该管状的本体部分13的、发出的光线在反射器11的内侧被反射。
此灯具构思为挂灯,然而同样也可以实现为壁灯或者在室内倾斜安排的、紧固在对应的固定物处的照射器。在向上指向的射线的情况下,必须对应地改变空气送入和空气排出,使得由此产生的热空气能够向上流出。
Claims (4)
1.带有一个光源和一个前置透镜(12)的灯具,该光源是一个发光二极管(14),该发光二极管被一个反射器(11)包围,该反射器具有锥形或旋转椭球的形状,
其特征在于,
该前置透镜(12)形成为菲涅尔透镜,该菲涅尔透镜安排在该反射器(11)的壳体面之内并且能够相对于该光源(14)偏移;
该反射器(11)和该菲涅尔透镜(12)一体式地彼此相连;
该菲涅尔透镜(12)安排在一个管状的本体部分(13)的末端侧,该本体部分同时形成为用于直线偏移的引导件;
该发光二极管(14)安排在一个向外直到多个通气通道为止被封闭的空间(24)中,其壁一面通过该管状的本体部分(13)形成并且另一面通过将其固定的电路板形成。
2.根据权利要求1所述的灯具,其特征在于,该反射器(11)由聚碳酸酯组成。
3.根据权利要求1至2任一项所述的灯具,其特征在于,该发光二极管安排在一个形成为空心圆柱体的外壳中,该外壳具有多个区段状的、在整个高度上延伸的腔室,这些腔室允许一种烟囱效应式的气流。
4.根据权利要求3所述的灯具,其特征在于,在这些空气流通的腔室之一中安排有一个LED驱动器。
Applications Claiming Priority (5)
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DE102012006326 | 2012-03-28 | ||
DE1020120063261 | 2012-03-28 | ||
DE202012003725U DE202012003725U1 (de) | 2012-03-28 | 2012-04-12 | Lampe |
DE2020120037250 | 2012-04-12 | ||
PCT/DE2012/000951 WO2013143514A1 (de) | 2012-03-28 | 2012-09-27 | Lampe |
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CN104321585A CN104321585A (zh) | 2015-01-28 |
CN104321585B true CN104321585B (zh) | 2017-08-22 |
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CN (1) | CN104321585B (zh) |
DE (1) | DE202012003725U1 (zh) |
WO (1) | WO2013143514A1 (zh) |
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EP2885577B1 (en) * | 2012-08-17 | 2017-03-29 | Philips Lighting Holding B.V. | Heat dissipation structure with splitted chimney structure |
JP6340723B2 (ja) * | 2014-06-16 | 2018-06-13 | パナソニックIpマネジメント株式会社 | 照明器具 |
GB2545017B (en) | 2015-12-04 | 2018-02-28 | Dyson Technology Ltd | A lighting device |
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US4530040A (en) * | 1984-03-08 | 1985-07-16 | Rayovac Corporation | Optical focusing system |
WO1989009424A1 (fr) * | 1988-03-30 | 1989-10-05 | Nauchno-Proizvodstvennoe Obiedinenie Po Avtoelektr | Collimateur |
JP2004259541A (ja) * | 2003-02-25 | 2004-09-16 | Cateye Co Ltd | 照明器具 |
AU2004284713B2 (en) * | 2003-10-06 | 2007-11-15 | Signify Holding B.V. | Method and apparatus for light collection, distribution and zoom |
DE102004014045A1 (de) * | 2003-12-22 | 2005-07-28 | Schott Ag | Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente |
JP2010129227A (ja) * | 2008-11-25 | 2010-06-10 | Toshiba Lighting & Technology Corp | 埋込形照明装置 |
CN101586764B (zh) * | 2009-04-22 | 2010-12-01 | 大连辉华科技有限公司 | 一种通过凸透镜移动装置控制车灯照射距离的方法 |
CN201582566U (zh) * | 2009-12-15 | 2010-09-15 | 深圳市朗恒电子有限公司 | 一种新型散光手电筒 |
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DE202012003725U1 (de) | 2012-06-05 |
CN104321585A (zh) | 2015-01-28 |
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