TWI418741B - Lighting device - Google Patents
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- TWI418741B TWI418741B TW99124934A TW99124934A TWI418741B TW I418741 B TWI418741 B TW I418741B TW 99124934 A TW99124934 A TW 99124934A TW 99124934 A TW99124934 A TW 99124934A TW I418741 B TWI418741 B TW I418741B
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Description
本發明係與照明裝置有關,特別是關於一種可產生上下不對稱之光型的照明裝置。The present invention relates to lighting devices, and more particularly to a lighting device that produces an up and down asymmetrical light pattern.
習知汽車所使用的燈具大多是以白熾燈、鹵素燈及高強度氣體放電燈(High Intensity Discharge;簡稱HID)為主要發光源,但隨著環保節能的議題日益受到重視,由於發光二極體(Light-Emitting Diode;簡稱LED)具有體積小、耗電量低、反應時間快及使用壽命長等優點,因此目前各國汽車廠已逐漸有將LED作為汽車燈具發光源的趨勢。LED應用於汽車照明燈具,可作為車內儀表板顯示用,或車外之煞車燈、方向燈、倒車燈、第三煞車燈、後方霧燈等,然而使用LED的前霧燈則較少見。The lamps used in the car are mostly incandescent lamps, halogen lamps and High Intensity Discharge (HID) as the main source of illumination, but with the increasing attention to environmental protection and energy conservation, due to the LED (Light-Emitting Diode; referred to as LED) has the advantages of small size, low power consumption, fast response time and long service life. Therefore, automobile manufacturers in various countries have gradually adopted LED as the light source of automobile lamps. LED is used in automotive lighting fixtures, and can be used as an in-vehicle dashboard display, or as a vehicle exterior light, direction light, reverse light, third brake light, rear fog light, etc., however, the front fog light using LED is less common. .
目前車燈設計的兩大主流為多橢圓反射鏡形式(Poly-Ellipsoid System)(又稱為投射式車燈,Projection System),以及多重反射鏡形式(Multi-Reflector,MR)。如我國專利公告號I296585所揭露之「前霧燈/A fog lamp」即為一種以LED作為發光源之投射式車燈,為配合LED之獨特幅射光型,該前霧燈使用一投射透鏡,組合一反射鏡,再配合一遮光片以阻擋部分光線,使該前霧燈得以產生上下不對稱之光型,以調整出符合歐洲經濟委員會(Economic Commission for Europe,ECE)對車輛燈光設備所制定之前霧燈規範(ECE R19)之光型(如第一圖所示)。At present, the two mainstreams of the lamp design are the Poly-Ellipsoid System (also known as the Projection System) and the Multi-Reflector (MR). For example, the "front fog lamp / A fog lamp" disclosed in the Chinese Patent Publication No. I296585 is a projection type lamp using an LED as a light source. To match the unique radiation type of the LED, the front fog lamp uses a projection lens. Combining a mirror with a light shield to block part of the light, so that the front fog lamp can generate an up and down asymmetrical light pattern to adjust to meet the requirements of the Economic Commission for Europe (ECE) for vehicle lighting equipment. Develop the light type of the previous fog lamp specification (ECE R19) (as shown in the first figure).
第一圖所示為ECE R19規範之前霧燈光型,係以該前霧燈之發光軸為中心點,朝左、右形成平行軸h,朝上、下形成垂直軸v。該光型主要具有五區域:A區係位於發光軸下方朝左、右各延伸一距離,係為亮度最高之區域;B區係自A區朝左、右再分別向外延伸,亮度低於A區;C區係位於發光軸上方朝左、右各延伸約為A區一半之距離,亮度低於B區;D區係自A區朝上、下、左、右再分別向外延伸,亮度低於C區;E區係自D區再朝上延伸,亮度低於D區。The first figure shows the fog light type before the ECE R19 specification. The center of the light beam of the front fog lamp is centered, and the parallel axis h is formed to the left and right, and the vertical axis v is formed upward and downward. The light type mainly has five regions: the A region is located below the light-emitting axis and extends to the left and right by a distance, which is the region with the highest brightness; the B region extends outward from the A region to the left and the right, respectively, and the brightness is lower than Area A; Section C is located above the illuminating axis, extending to the left and right, about half the distance of the A area, and the brightness is lower than the B area; the D area extends upwards, downwards, left, and right from the A area, respectively. The brightness is lower than the C area; the E area extends from the D area to the upper side, and the brightness is lower than the D area.
前述公告專利之前霧燈雖可達到ECE R19規範之光型,然而,係利用光學透鏡調焦方式達到所需輻射光場之投射光型,故其中該投射透鏡之擺放位置需相當精準;而且,該遮光片會造成光線的利用率降低,因此若要使該前霧燈發出足夠亮度之光線,則需在光源位置設置多數個LED,如此不但反而造成能源浪費,更會有散熱不易之缺點。Before the aforementioned patents, the fog lamps can achieve the light type of the ECE R19 specification. However, the optical lens focusing method is used to achieve the projection light pattern of the desired radiation field, and therefore the projection lens position is required to be quite accurate; The visor will reduce the utilization of light. Therefore, if the front fog lamp emits sufficient brightness, it is necessary to set a plurality of LEDs at the position of the light source, which not only causes energy waste but also has the disadvantage of heat dissipation. .
又,如美國專利公告號US6945672B2所揭露之「LED planar light source and profile headlight constructed therewith」則為一種以LED構成平面光源之反射式車燈,係將LED平面光源放置於一拋物面反射罩之焦點上,以產生平行投射發光之輻射光場。然而,該反射式車燈的反射罩尺寸必須很大,才能將朝向四周等向發光的LED光源有效匯聚而投射出足夠之光線強度,因此仍有待改進。In addition, the "LED planar light source and profile headlight constructed therewith" disclosed in US Pat. No. 6,946,672 B2 is a reflective type of light that constitutes a planar light source with LEDs, and the LED planar light source is placed at the focus of a parabolic reflector. To produce a radiant light field of parallel projected illumination. However, the reflector of the reflective lamp must be large in size in order to effectively converge the LED light source that is directed toward the periphery to project sufficient light intensity, and thus still needs to be improved.
有鑑於上述缺失,本發明之主要目的在於提供一種照明裝置,不但可產生上下不對稱之光型以符合ECE R19規範,更具有省電及光線利用率佳之優點。In view of the above-mentioned deficiencies, the main object of the present invention is to provide a lighting device which can not only generate an up and down asymmetrical light type to comply with the ECE R19 specification, but also has the advantages of power saving and good light utilization.
為達成上述目的,本發明所提供之照明裝置包含有一反射罩及一發光元件。該反射罩之內面具有曲率不同之一上曲面、一下曲面,以及連接於該上、下曲面之間的二側平面,而該發光元件係設置於該反射罩之上曲面焦點及下曲面焦點之間。藉此,該發光元件產生之光線透過該反射罩之上、下曲面反射後,會向外投射出光線,且由於該上、下曲面曲率設計之差異,該照明裝置投射出之光線會隨其高度不同而具有不同之亮度,因此可調整出符合特定規範之車輛照明設備光型,且由於該特定光型效果並非藉由阻擋該發光元件產生之部分光線而達成,因此該照明裝置具有良好之光線利用率。再者,該照明裝置可更設有一上下不同曲率之透鏡,係用以增加該反射罩反射後之光線的集光效率,以更加提升該照明裝置之光線利用率。In order to achieve the above object, the illumination device provided by the present invention comprises a reflector and a light-emitting component. The inner surface of the reflector has an upper curved surface, a lower curved surface, and a two-sided plane connected between the upper and lower curved surfaces, and the light-emitting element is disposed on the curved cover and the lower curved focus on the reflective cover. between. Thereby, the light generated by the illuminating element is reflected by the reflector and the lower curved surface, and the light is projected outward, and the light projected by the illuminating device is accompanied by the difference in the curvature design of the upper and lower surfaces. The height is different and has different brightness, so that the light pattern of the vehicle lighting device meeting the specific specification can be adjusted, and since the specific light type effect is not achieved by blocking part of the light generated by the light emitting element, the lighting device has good performance. Light utilization. Furthermore, the illumination device can be further provided with a lens with different curvatures up and down to increase the light collection efficiency of the light reflected by the reflector to further improve the light utilization efficiency of the illumination device.
有關本發明所提供之照明裝置的詳細構造、特點、組裝或使用方式,將於後續的實施方式詳細說明中予以描述。然而,在本發明領域中具有通常知識者應能瞭解,該等詳細說明以及實施本發明所列舉的特定實施例,僅係用於說明本發明,並非用以限制本發明之專利申請範圍。Detailed construction, features, assembly or use of the illumination device provided by the present invention will be described in the detailed description of the following embodiments. However, it should be understood by those of ordinary skill in the art that the present invention is not limited by the scope of the invention.
以下將藉由所列舉之實施例配合隨附之圖式,詳細說明本發明之技術內容及特徵,其中:第二圖為本發明一第一較佳實施例所提供之照明裝置的立體示意圖;第三圖為本發明該第一較佳實施例所提供之照明裝置的側視示意圖;第四圖為本發明該第一較佳實施例所提供之照明裝置的頂視示意圖;第五圖為本發明該第一較佳實施例所提供之照明裝置的光型示意圖;第六圖為本發明一第二較佳實施例所提供之照明裝置的頂視示意圖;以及第七圖為本發明一第三較佳實施例所提供之照明裝置的側視示意圖。The technical content and features of the present invention will be described in detail below with reference to the accompanying drawings, wherein: FIG. 2 is a perspective view of a lighting device according to a first preferred embodiment of the present invention; 3 is a schematic side view of a lighting device provided by the first preferred embodiment of the present invention; FIG. 4 is a top plan view of the lighting device provided by the first preferred embodiment of the present invention; A schematic diagram of a light pattern of a lighting device provided by the first preferred embodiment of the present invention; a sixth schematic view of a lighting device according to a second preferred embodiment of the present invention; and a seventh diagram of the present invention A side view of a lighting device provided by a third preferred embodiment.
申請人首先在此說明,在以下將要介紹之實施例以及圖式中,相同之參考號碼,表示相同或類似之元件或其結構特徵。The Applicant first describes the same or similar elements or structural features thereof in the embodiments and the drawings which will be described below.
請先參閱第二圖至第四圖,本發明一第一較佳實施例所提供之照明裝置10包含有一反射罩20,以及一發光元件30。Referring to the second to fourth figures, a lighting device 10 according to a first preferred embodiment of the present invention includes a reflector 20 and a light-emitting element 30.
該反射罩20係呈一開放之殼體狀,其內面具有相互連接之一上曲面22、一下曲面24,以及連接於該上、下曲面22、24間之二側平面26。其中,該上、下曲面22、24之連接處係形成該反射罩20之一連接部27,而相對於該連接部27係為該反射罩20之一開口28。該上曲面22之曲率半徑係較該下曲面24之曲率半徑為小,因此,該上曲面22之焦點222係較該下曲面24之焦點242更為接近該連接部27,且該二焦點222、242之連線定義出該照明裝置10之一發光軸線40。各該側平面26係自該連接部27朝該開口28方向向外傾斜,使得該反射罩20垂直其發光軸線40之截面寬度係自該連接部27朝該開口28方向逐漸增寬;本實施例所提供該二側平面26具有以該發光元件為中心且朝該開口28呈相互對稱之向外傾斜角度,較佳之角度以小於10度且大於5度者(其中以8度為最佳)可於應用至車輛裝置時有符合特定照明規範的照視角度。The reflector 20 is in the form of an open casing having an inner surface 22, a lower curved surface 24, and two side planes 26 connected between the upper and lower curved surfaces 22, 24. The connection between the upper and lower curved surfaces 22 and 24 forms a connecting portion 27 of the reflecting cover 20, and the opening portion 28 of the reflecting cover 20 is formed with respect to the connecting portion 27. The radius of curvature of the upper curved surface 22 is smaller than the radius of curvature of the lower curved surface 24, and therefore, the focus 222 of the upper curved surface 22 is closer to the connecting portion 27 than the focal point 242 of the lower curved surface 24, and the two focal points 222 The connection of 242 defines an illumination axis 40 of the illumination device 10. Each of the side planes 26 is inclined outwardly from the connecting portion 27 toward the opening 28 such that the cross-sectional width of the reflecting cover 20 perpendicular to the light-emitting axis 40 thereof gradually widens from the connecting portion 27 toward the opening 28; The two side planes 26 are provided with an outwardly inclined angle centered on the light-emitting element and symmetrical to the opening 28, preferably at an angle of less than 10 degrees and greater than 5 degrees (of which 8 degrees is optimal) There is a viewing angle that meets specific lighting specifications when applied to a vehicle device.
該發光元件30為一發光二極體,係設置於該反射罩20之上曲面焦點222及下曲面焦點242之間,使得該發光元件30產生之光線透過該反射罩20之上、下曲面22、24及二側平面26反射後,會朝向該開口28投射出以該發光軸線40為中心向周圍發散之光線,其發散方向對應於該發光軸線40之左、右兩側為呈對稱之亮度分佈,對應於該發光軸線40之上、下兩側為呈非對稱之亮度分佈且較趨於下側有較大之亮度分佈,以符合車輛照明設備特定規範之光型。The light-emitting element 30 is a light-emitting diode disposed between the curved surface focus 222 and the lower curved surface focus 242 of the reflective cover 20 such that light generated by the light-emitting element 30 passes through the reflective cover 20 and the lower curved surface 22 . After being reflected by the 24 and the two side planes 26, light rays diverging around the light-emitting axis 40 are projected toward the opening 28, and the diverging direction corresponds to the symmetrical brightness of the left and right sides of the light-emitting axis 40. The distribution corresponds to an asymmetrical luminance distribution above and below the illumination axis 40 and a larger luminance distribution on the lower side to conform to the specific specification of the vehicle lighting device.
前述本實施例所提供之照明裝置10,可用以設置於汽車之車頭前端,以作為該汽車之前霧燈。由於該上、下曲面22、24曲率設計之差異,該照明裝置10投射出之光線 會隨其投射高度不同而具有不同之亮度,且由於該二側平面26係向外傾斜,可使光線朝向左、右兩側投射之角度較大;因此,該照明裝置10所投射出之光線可於其開口28前方一與該發光軸線40相互垂直之投影平面42產生如第五圖所示之光型,其位於該發光軸線40之上、下兩側為呈非對稱之亮度分佈。詳而言之,該照明裝置10於該投影平面42上之亮度分佈係自一垂直長度較小而水平長度較大之中央區域422朝上、下、左、右亮度漸減,且產生之光型係符合如ECE R19所規範者。另外,由於該特定光型效果並非藉由阻擋該發光元件30產生之部分光線而達成,因此該照明裝置10具有良好之光線利用率。再者,由於該發光元件30係為發光二極體,因此更可使該照明裝置10具有節能省電之優點。The illumination device 10 provided in the foregoing embodiment can be used to be disposed at the front end of the front of the automobile as the front fog lamp of the automobile. Due to the difference in curvature design of the upper and lower curved surfaces 22, 24, the illumination device 10 projects the light It will have different brightness depending on its projection height, and since the two side planes 26 are inclined outward, the angle of light can be projected toward the left and right sides; therefore, the light projected by the illumination device 10 A projection plane 42 perpendicular to the axis of illumination 40 in front of the opening 28 produces a pattern of light as shown in the fifth embodiment, which is located above the axis of illumination 40 and has an asymmetric brightness distribution on the lower side. In detail, the brightness distribution of the illuminating device 10 on the projection plane 42 is gradually decreased from the central region 422 having a small vertical length and a large horizontal length toward the upper, lower, left and right colors, and the generated light pattern is generated. It is in compliance with the requirements of ECE R19. In addition, since the specific light type effect is not achieved by blocking a part of the light generated by the light-emitting element 30, the illumination device 10 has a good light utilization efficiency. Moreover, since the light-emitting element 30 is a light-emitting diode, the lighting device 10 can further have the advantages of energy saving and power saving.
請再參閱第六圖,本發明一第二較佳實施例所提供之照明裝置50係結合三組第一較佳實施例中之反射罩20及發光元件30。詳而言之,各該反射罩20係以其一側平面26鄰接於另一反射罩20之一側平面26,且該等反射罩20之開口28係朝向同一方向並位於同一開口平面60上,另外,該等反射罩20之上、下曲面焦點連線係相互平行且位於同一平面。該照明裝置50所發出之光線同樣係以一發光軸線40為中心向周圍發散,該發光軸線40係與各該反射罩20之上、下曲面焦點連線相互平行且位於同一平面,並垂直於該開口平面60,在本實施例中,該發光軸線40即為位於中間之反射罩20之上、下曲面焦點連線。該等反射罩20內部所設置之發光元件30係排列成一平行於該開口平面60之直線62,亦即,該直線62係垂直於該發光軸線40。藉此,該照明裝置50所投射出之光線同樣可形成如第五圖所示之光型,不但可符合ECE R19之規範,亦具有省電及光線利用率佳之優點。除此之外,由於該照明裝置50具有分散排列的三個發光元件30,因此不但具有較大之亮度,且與相同亮度之一般照明裝置比較,具有更佳之散熱性。Referring to the sixth embodiment, a lighting device 50 according to a second preferred embodiment of the present invention combines three sets of the reflector 20 and the light-emitting element 30 in the first preferred embodiment. In detail, each of the reflectors 20 has a side plane 26 adjacent to one side plane 26 of the other reflector cover 20, and the openings 28 of the reflectors 20 are oriented in the same direction and on the same opening plane 60. In addition, the upper and lower curved surface focus lines of the reflectors 20 are parallel to each other and are in the same plane. The light emitted by the illuminating device 50 is also diverged around the center of the light-emitting axis 40. The light-emitting axis 40 is parallel to the top surface of each of the reflectors 20 and is in the same plane, and is perpendicular to The opening plane 60, in this embodiment, the light-emitting axis 40 is above the reflective cover 20 in the middle, and the lower curved surface is connected. The light-emitting elements 30 disposed inside the reflectors 20 are arranged in a line 62 parallel to the plane of the opening 60, that is, the line 62 is perpendicular to the axis of illumination 40. Thereby, the light projected by the illumination device 50 can also form the light type as shown in FIG. 5, which not only conforms to the specification of ECE R19, but also has the advantages of power saving and good light utilization. In addition, since the illuminating device 50 has three illuminating elements 30 arranged in a distributed manner, it not only has a large brightness, but also has better heat dissipation properties than a general illuminating device of the same brightness.
由前述二實施例可得知,本發明所提供之照明裝置可依據所需之亮度結合多組反射罩20及發光元件30,如此一來,該照明裝置所投射出之光線不但可具有足夠之亮度,且可形成符合ECE R19規範之光型,更具有節能省電且散熱性佳等優點。除此之外,前述二實施例所提供之照明裝置中,各該反射罩20內可於較接近開口28之位置更設置有一透鏡70(如第七圖所示),該透鏡70具有朝向該開口28之一第一曲面71及一第二曲面72,係分別鄰近於該反射罩20之上、下曲面,並配合該反射罩20所產生的輻射光場而有不同的曲率分佈,本實施例所提供者,該第一曲面71係呈不規則曲率之形狀,該第二曲面72之曲率半徑係較該第一曲面71之曲率半徑為大;藉此,該透鏡70可將會自反射罩20開口28發散出射的光線收歛,再投射出去,如此一來,可更提升該照明裝置之光線利用率。It can be seen from the foregoing two embodiments that the illumination device provided by the present invention can combine multiple sets of reflectors 20 and light-emitting elements 30 according to the required brightness, so that the light projected by the illumination device can have sufficient light. Brightness, and can form an optical type that conforms to the ECE R19 specification, and has the advantages of energy saving and good heat dissipation. In addition, in the illumination device provided in the foregoing two embodiments, a lens 70 (shown in FIG. 7) may be disposed in each of the reflectors 20 at a position closer to the opening 28, and the lens 70 has a direction toward the The first curved surface 71 and the second curved surface 72 of the opening 28 are respectively adjacent to the upper surface and the lower curved surface of the reflector 20, and have different curvature distributions in accordance with the radiation field generated by the reflector 20, and the present embodiment has different curvature distributions. For example, the first curved surface 71 has a shape of irregular curvature, and the radius of curvature of the second curved surface 72 is larger than the radius of curvature of the first curved surface 71; thereby, the lens 70 can be self-reflecting The light emitted by the opening 20 of the cover 20 converges and is projected again, so that the light utilization efficiency of the lighting device can be further improved.
最後,必須再次說明,本發明於前揭實施例中所揭露的構成元件,僅為舉例說明,並非用來限制本案之範圍,其他等效元件的替代或變化,亦應為本案之申請專利範圍所涵蓋。Finally, it is to be noted that the constituent elements disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention, and alternative or variations of other equivalent elements should also be the scope of the patent application of the present application. Covered.
10...照明裝置10. . . Lighting device
20...反射罩20. . . Reflector
22...上曲面twenty two. . . Upper surface
222...焦點222. . . focus
24...下曲面twenty four. . . Lower surface
242...焦點242. . . focus
26...側平面26. . . Side plane
27...連接部27. . . Connection
28...開口28. . . Opening
30...發光元件30. . . Light-emitting element
40...發光軸線40. . . Luminous axis
42...投影平面42. . . Projection plane
422...中央區域422. . . Central area
50...照明裝置50. . . Lighting device
60...開口平面60. . . Opening plane
62...直線62. . . straight line
70...透鏡70. . . lens
71...第一曲面71. . . First surface
72...第二曲面72. . . Second surface
第一圖為ECE R19規範之前霧燈光型示意圖;The first picture is a schematic diagram of the fog light pattern before the ECE R19 specification;
第二圖為本發明一第一較佳實施例所提供之照明裝置的立體示意圖;2 is a perspective view of a lighting device according to a first preferred embodiment of the present invention;
第三圖為本發明該第一較佳實施例所提供之照明裝置的側視示意圖;Figure 3 is a side elevational view of the lighting device provided by the first preferred embodiment of the present invention;
第四圖為本發明該第一較佳實施例所提供之照明裝置的頂視示意圖;Figure 4 is a top plan view of a lighting device provided by the first preferred embodiment of the present invention;
第五圖為本發明該第一較佳實施例所提供之照明裝置的光型示意圖;Figure 5 is a schematic view showing the light pattern of the illumination device provided by the first preferred embodiment of the present invention;
第六圖為本發明一第二較佳實施例所提供之照明裝置的頂視示意圖;以及Figure 6 is a top plan view of a lighting device provided by a second preferred embodiment of the present invention;
第七圖為本發明一第三較佳實施例所提供之照明裝置的側視示意圖。Figure 7 is a side elevational view of a lighting device provided by a third preferred embodiment of the present invention.
10...照明裝置10. . . Lighting device
20...反射罩20. . . Reflector
28...開口28. . . Opening
30...發光元件30. . . Light-emitting element
Claims (14)
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TW99124934A TWI418741B (en) | 2010-07-28 | 2010-07-28 | Lighting device |
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TW99124934A TWI418741B (en) | 2010-07-28 | 2010-07-28 | Lighting device |
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TWI418741B true TWI418741B (en) | 2013-12-11 |
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CN104344280A (en) | 2013-07-31 | 2015-02-11 | 扬升照明股份有限公司 | Light source module |
CN104763919B (en) | 2014-01-08 | 2017-04-12 | 扬升照明股份有限公司 | Light source module |
TWI573953B (en) * | 2014-12-31 | 2017-03-11 | 國立中央大學 | Adaptive headlamp module |
Citations (6)
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EP1293723A1 (en) * | 2001-09-12 | 2003-03-19 | Vari-Lite, Inc. | Light beam shutter apparatus |
EP1772665B1 (en) * | 2005-10-05 | 2008-06-25 | Optic K (Société à Responsabilité Limitée) | LED lighting device |
TWI298378B (en) * | 2006-07-05 | 2008-07-01 | Chungchou Inst Of Technology | Lamps for vehicles |
TW200907229A (en) * | 2007-08-01 | 2009-02-16 | Ligitek Electronics Co Ltd | Light emitting diode lamp and reflective lampshade |
TWM361440U (en) * | 2008-12-26 | 2009-07-21 | Automotive Res & Testing Ct | Light convergent illumination structure with multiple curvatures |
US20100080005A1 (en) * | 2008-10-01 | 2010-04-01 | Massimo Gattari | Lighting device with optimized emission |
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2010
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1293723A1 (en) * | 2001-09-12 | 2003-03-19 | Vari-Lite, Inc. | Light beam shutter apparatus |
EP1772665B1 (en) * | 2005-10-05 | 2008-06-25 | Optic K (Société à Responsabilité Limitée) | LED lighting device |
TWI298378B (en) * | 2006-07-05 | 2008-07-01 | Chungchou Inst Of Technology | Lamps for vehicles |
TW200907229A (en) * | 2007-08-01 | 2009-02-16 | Ligitek Electronics Co Ltd | Light emitting diode lamp and reflective lampshade |
US20100080005A1 (en) * | 2008-10-01 | 2010-04-01 | Massimo Gattari | Lighting device with optimized emission |
TWM361440U (en) * | 2008-12-26 | 2009-07-21 | Automotive Res & Testing Ct | Light convergent illumination structure with multiple curvatures |
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