EP1107210A2 - Emetteur de signaux à diodes électroluminescentes avec plusieurs zones de diodes - Google Patents

Emetteur de signaux à diodes électroluminescentes avec plusieurs zones de diodes Download PDF

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Publication number
EP1107210A2
EP1107210A2 EP00890368A EP00890368A EP1107210A2 EP 1107210 A2 EP1107210 A2 EP 1107210A2 EP 00890368 A EP00890368 A EP 00890368A EP 00890368 A EP00890368 A EP 00890368A EP 1107210 A2 EP1107210 A2 EP 1107210A2
Authority
EP
European Patent Office
Prior art keywords
led
light
scattering
angle
horizontal
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP00890368A
Other languages
German (de)
English (en)
Other versions
EP1107210A3 (fr
Inventor
Franz Ing. Silhengst
Alexander Dipl-Ing. Otto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swarco Futurit Verkehrssignalsysteme Ges mbH
Original Assignee
Swarco Futurit Verkehrssignalsysteme Ges mbH
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 Swarco Futurit Verkehrssignalsysteme Ges mbH filed Critical Swarco Futurit Verkehrssignalsysteme Ges mbH
Publication of EP1107210A2 publication Critical patent/EP1107210A2/fr
Publication of EP1107210A3 publication Critical patent/EP1107210A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like

Definitions

  • LED light-emitting diodes
  • the advantage of the decentralized designs is a very small installation depth and a distributed one Loss of heat, which can then be dissipated without additional effort.
  • the visual appearance leaves something to be desired, because despite use Often several hundred LEDs can usually be recognized individually, which is particularly the case with an LED failure is noticeable, the electrical circuit and Failure monitoring with the large number of LEDs complicated and also relative prone to failure, which runs counter to the intention of a long, maintenance-free service life.
  • the invention relates to signal generators with a central LED arrangement.
  • the so far Common arrangement has been found to be defective in relation to the so-called Phantom light behavior (this is the pretense of an activated signal light by incident sunlight) as well as the occasionally insufficient brightness.
  • This design also results in particular from the unfocused, blurred image the LED arrangement a homogeneous light distribution and an excellent uniform Appearance of the light signal, even if one or more LEDs fail. she owns but also major disadvantages. It has been shown that this version is not too great can meet high brightness requirements because of the size of the LED array and the blurred image is a very large one despite the condenser lens Has basic divergence. The phantom light is also very high because of this all-round divergence a lot of sunlight can also fall on the LED arrangement. The LED reflect through their built-in reflectors as well as through their shiny Solder connections return the sunlight as phantom light.
  • the well-known phantom light-lowering devices are not in the absence of a parallel light path usable.
  • the housing is also used as a heat sink. Because it because of the better heat dissipation and because of the phantom light reduction black is colored, it is heated up accordingly in the sun, whereby the The light output of the LED drops.
  • Patent application A 488/99 shows one possibility for use of a lamella insert without a parallel beam.
  • the arrangement of the LED narrow limits especially a low height.
  • a sufficiently low phantom light arrangement can be achieved, but it is currently not possible to meet higher light values because of the space available too few LEDs can be strung together.
  • Another disadvantage is that Front lens design limitations regarding position and achievable Light distribution. therefore there is also the risk of a slightly strip-shaped Appearance. The overall depth is even greater than in the previous version because additional slats are to be accommodated.
  • here is also an inclined one Design of the optics presented, which the phantom light-generating reflections of the steps between the front lens elements.
  • the adjustment of the LED emission characteristics using small auxiliary lenses can affect brightness and Impact phantom light, because with it a focal length adjustment of the condenser lenses becomes possible.
  • the size of the phantom light is increased in Europe by the ratio of useful light Phantom light qualified and divided into classes, with a sun position of 10 degrees is assumed above the horizon, according to a German standard, the phantom light absolutely not fixed values at a sun position of 17.5 degrees above the horizon exceed. In both cases, however, the sum of light from signal and phantom light comply with the prescribed light colors for signal lights. At the same time, the However, signal transmitters have the light maximum in the horizontal direction, so that high ratio of useful light to phantom light is achieved.
  • the specifications regarding the light color of the total light can be colored
  • the windshield can be met, which also makes the phantom light in a lot higher than the useful light is reduced because the colored light of the LED is almost penetrates the front screen of the same color unhindered, can penetrate into the optics but only the amount of sunlight that is not affected by the filter effect of the windscreen.
  • the object of the invention is therefore an optical insert for signal generators with a central Arrangement of the LED to develop, which is a special LED arrangement, paired with has a specially adapted scattering optics, which in the horizontal direction maximum possible brightness, and where practically none at an angle of 10 Degree or higher incident sunbeam can hit the LED. Furthermore, the Light distribution as homogeneous as possible and precisely adapted to the distribution regulations be, in order to find cost with as few LEDs as possible and the to effectively use the available amount of light.
  • the LEDs are arranged in horizontal rows have mutually equal distances A, are arranged, of which lowest row starting from a low horizontal zone X with highest packing density and luminous intensity of the LED is present, the half height Z / 2 converted into one Angle value ZW / 2 is smaller than that by half the distance angle AW / 2 by which Impact overlaps of different scattering element groups arise Correction angle K of the reference axis R, around the light divergence DW of the LED itself the sunbeam divergence and around the manufacturing tolerances and Focusing deviations reduced angle value reduced Sun angle S, and that preferably at least one zone Y1 much lower packing density and / or light intensity of the LED mainly after connects above.
  • the main problem of the known systems is that so far from one uniform planar arrangement of the LED was assumed to be to get the most concentrated, compact LED arrangement possible.
  • Such The arrangement has a center of light, approximately in its center, whose position is essentially preserved by any optics. Because every LED does When the signal field is fully illuminated, every scatter element in front also directs that Light from all existing LEDs in the same way, so that optical Laws only an enlargement or displacement of the light beam or existing divergence, but no newly composed light distribution is possible.
  • FIG. 1 to 4 show, in vertical section, the basic illustration of a signal transmitter optics in different versions, Fig. 5 and Fig. 6 this signaling optics in Horizontal section, Fig. 7 several versions of the LED arrangement and Fig. 8 den Vertical section through a schematic diagram of an optical system according to the invention.
  • the demand for a pronounced fall in light is similar to one conventional reflector design with a single horizontal row of LED light to fulfill.
  • Their light can be directed very precisely in parallel using the condenser lens the scattering elements in the windscreen only direct the light in a known manner to the side and down. With a suitable determination of the scattering elements, the Maintain the direction of maximum brightness.
  • Fig. 1 shows this fact in a schematic diagram.
  • a circuit board (2) which with a horizontal row of High-performance LEDs (3) is equipped.
  • a condenser lens (4) in Fresnel construction, which the the LED (3) collects outgoing light and directs it in parallel.
  • a condenser lens (4) in Fresnel construction, which the the LED (3) collects outgoing light and directs it in parallel.
  • a condenser lens (4) in Fresnel construction, which the the LED (3) collects outgoing light and directs it in parallel.
  • the LEDs (3) have such a light emission characteristic that they illuminate the condenser lens (4) as completely and evenly as possible. This is the row length L small compared to the diameter of the optics.
  • the size of the LED arrangement is limited by the loss of light LED on the edge, which with increasing distance from the center at the Condenser lens (4) flashing more and more, increasing losses in the stages of Have Fresnel rings and are increasingly difficult to focus.
  • An LED is not a point light source, it contains optical components to increase the Efficiency that cause light divergence. So has approximately Light emission from the LED (3) has a radius D, which depends on the focal length F a general divergence angle DW of the light beam (8) is determined. This occurs every point of the lens (5) with the same orientation. In a very big one A virtual projection wall (9) with an angular degree scale is located in front of it. The light beam (8) then generates for each without taking into account the scattering elements (6) LED (3) a light spot with an intensity curve (10), the size of which by the Beam divergence angle DW and component tolerances are determined and its Maximum represents the reference axis R for the alignment of the optics.
  • Fig. La shows an intensity curve (11) on the virtual projection wall (9) with Consideration of the scattering elements (6). These scatter part of the Light to the side and downwards, without significantly increasing the position of the reference axis R. influence.
  • Sun rays (12) are also shown, which are at an angle S, usually 10 Degrees, meet the optics. You will be without the condenser lens (4) Taking into account the scattering elements (6) on a focal spot G below the LED row (3) bundled, taking into account the scattering elements (6) one (not here shown) additional side and downward scattering analogous to the useful light (8), so that the LED (3) can never be illuminated.
  • the brightness of the LED is far from being for such a solution sufficient so that a surface arrangement must be chosen.
  • Fig. 2 shows the changes caused by the addition of another row of LEDs (3a) arise immediately above the existing LED row (3) at a distance A. Without Consideration of scattering elements (6) in the front window (5) is created on the Projection screen (9) an additional row of light spots (10a) below the existing light spots (10). For a homogeneous photo, these two Rows of light spots are merged into a continuous intensity course, what according to optical laws by scattering in the vertical direction by +/- the half row spacing A, or converted into a vertical angle +/- AW / 2, altogether happens around the angle AW.
  • Fig. 2a shows the intensity curve (11) a vertical scattering with the angle AW through the scattering elements (6). The spot This has shifted the maximum intensity downwards.
  • the optics must be around Correction angle K, which is half the row spacing or Vertical spreading angle is AW / 2, can be turned upwards.
  • the top edge light rays (13) by the scattering effect already a larger angle than the sun position angle S.
  • the optical alignment can be corrected in several ways, for example by Tilting of the entire optics, by overlaying all scattering elements (6) with prism lenses or by moving the circuit board (2), as shown in Fig. 3.
  • 3a shows the conditions taking into account the Scattering elements (6).
  • a substantial part of the useful light (8) runs over the horizon.
  • the intensity curve (11) extends far beyond the sun angle S, the optics has significant phantom light.
  • 3 also shows the course of the sun's rays (12) shown. These are vertical on the scattering elements (6) by the same angle AW scattered.
  • the illustrated height Z of the luminous zone X is here for one Low phantom light solution too large.
  • the available height Z of the light zone X is determined by the selected one Sun angle S, reduced by the relatively low divergence of the sun's rays itself, which is set at 0.5 degrees in the laboratory, the divergence DW of the LED (3) emitted light, half of the vertical scattering angle AW, any Correction angle K of the reference axis R, and a correction discount for tolerances of the optical components and an inevitable image blur with off-center Arrangement of the LED (3), which is mainly due to the inexpensive use of a flat circuit board (2) is created.
  • the remaining angle value corresponds to an upper one Limit for half the height of light zone X.
  • Fig. 4 shows a possible solution. Above the central row of LEDs (3) are one or several LED rows (3a) arranged, their light intensities (10a) much lower are as the intensity (10) of the central LED row (3), they are in plan view through thinner lines can be seen.
  • the display is again without considering the Scattering elements (6).
  • 4a again shows the intensity curve (11) with consideration the scattering elements (6) can be seen. As before, they scatter by an angle +/- AW / 2 Achieving a homogeneous intensity curve. It can be seen that the position of the Reference axis R has been practically preserved. All light rays are also below of the sun angle S, there is only a slight loss of light above the horizon on, which compensates for the use of weaker LEDs.
  • the intensity curve (11) follows the usual form of a prescribed light distribution, as shown in Fig. 4b is shown as an example.
  • Fig. 4 is also the strong light zone X of the LED series (3) with The lowest possible height Z is drawn in, followed by the top the light zone Y1 formed from weaker LED rows (3a) with the light-active height Z1. It can also be seen that despite the vertical scattering angle AW, the sun's rays (12) the LEDs (3) and (3a) are practically not irradiated.
  • Fig. 5 shows the horizontal section through 1 with an LED row (3).
  • the intensity curves (10) result again without taking into account the scattering elements (6).
  • 5a shows the Intensity curve (11) when the scattering elements (6) cause this minimum scatter. It an area with constant brightness is achieved.
  • FIG. 5c shows an example of a distribution rule in the horizontal direction.
  • the Intensity curve (11) of FIG. 5b represents a good approximation here.
  • Fig. 6 shows the situation when the LED distances are increased within one Row, again without taking into account the scattering elements (6).
  • the light spots (10) move up accordingly far apart.
  • Fig. 6a shows that the light spots by using the previous minimal scatter angle HW do not merge.
  • a homogeneous Light distribution only arises when the minimum scatter in the largest LED distance corresponds to all LED rows Hmax and the converted angle HWmax.
  • the maximum scattering angle LW remains essentially unaffected.
  • 6b represents again represents the maximum scatter with the scatter angle HWmax.
  • the intensity curve (11) is very homogeneous, but in the reference axis R is a lower value than in FIG. 5b available. Moving the LED (3) of a row apart will make a smaller one Intensity achieved.
  • the described options leave several in the design of the light distribution Ways to. Remain after defining the zone with maximum packing density X and necessary scattering angle of the main group determining the reference axis R of Scattering elements (6) still areas of the desired light distribution too dark, so decide whether additional LEDs (3) are in a weaker light zone Y1 in suitable distances H on the circuit board (2), or whether another Group of scattering elements (6) with different or larger scattering angles can be defined but it can also be a combination of both.
  • the Scattering elements (6) only achieve the respective minimum scattering angle. To do this, either all LEDs in all rows have the same horizontal distance H from each other and Light zone Y1 can be equipped with weaker LEDs (3a), or the minimum Horizontal scattering becomes apparent in the presence of rows with partial populations the largest occurring LED distance Hmax.
  • FIG. 7a to 7f show several exemplary embodiments for LED arrangements.
  • Fig. 7a shows the circuit board of Fig. 4 with LEDs of different brightness. Some LED designs are delivered sorted according to brightness classes, which here can be used appropriately.
  • 7b shows the same design for LEDs uniform brightness with increased spacing in the rows of light zone Y1.
  • Fig. 7c shows the circuit board equipped with another LED type. The supposedly the same Arrangement like Fig. 7b differs significantly.
  • the zone with maximum Packing density X has a greater height Z, but the row spacing A is smaller. It a lower vertical minimum scattering angle AW is therefore required, a simple one Replacing the circuit board of Fig. 7b does not lead to success.
  • 7d shows one modified version of Fig.
  • FIG. 7e shows a printed circuit board constructed from several zones
  • FIG. 7f shows that also to the side of the zone of maximum packing density X a zone with weaker ones Can border assembly. This makes for example a particularly large one Visibility of the signal generator achieved.
  • the horizontal LED distances are Hmax Multiples of the grid value of the highest packing density in the light zone X. With these A particularly homogeneous light distribution can be achieved if the horizontal scattering angle are also multiples of these converted grid values. Arbitrarily selected scattering angles, but also irregular LED distances as in Fig. 7e Under certain circumstances, the light spots (10) can be superimposed by unsuitable ones Overlaps lead to a relatively step-like or wave-like intensity distribution (11).
  • the circuit board (2) is compared to the previous representations by the angle PW against the condenser lens (4) inclined. On the one hand, this results in the LEDs arranged above the light zone X. (3a, 3b) in a position with better focus, on the other hand their light is better from the condenser lens.
  • Below the circuit board (2) is through a bulge (14) sufficient space for the power supply (15) in the housing (1).
  • a panel (16) is installed, which has a light-absorbing, black matt surface (17) and most of the housing (1), the circuit board (2), and the Power supply (15) covers. Penetrating sun rays (12) all fall on the Surface (17) and are absorbed.
  • the aperture (16) has the smallest possible dimensions Openings (18) for the light exit of the LED (3, 3a, 3b) open, thereby all shiny surfaces of the printed circuit board (2) such as conductor tracks, components and solder connections covered.
  • the panel (16) provides a heat shield against direct Solar radiation, which by heating the circuit board (2) would cause a drop in brightness.
  • the aperture (16) can be low Phantom light requirements are omitted for cost reasons.
  • the housing (1) has a good heat-conducting back (19), which is the heat loss the circuit board (2) receives, distributes and radiates to the outside. But it can also be a commercially available heat sink must be attached at the rear.
  • the circuit board (2) here has three LED rows (3, 3a, 3b) on, with a combination of different Brightness and larger distances three brightness zones arise, which without Consideration of the scattering elements (6) intensities of different brightness (10, 10a, 10b) generate on the virtual projection screen (9).
  • Fig. 8a again provides the Taking into account the scattering elements (6), the vertical intensity curve (11) achieved
  • the reference axis R remains horizontal. All light rays are below that Sun angle S.
  • the scattering angle considerations assume a uniform scattering as they do approximately for smaller deflection angles of spherical lens surfaces with horizontal and vertical radii can be achieved.
  • scatter elements can also on the mainly smooth side of the condenser lens (4) facing the LED be attached, the scattering angle of the scattering elements (6) are then accordingly to reduce.
  • the vertical minimum scatter angle AW by a suitable scattering structure on the condenser lens (4) then there are at least Main group of scattering elements, or even all scattering elements (6) from simpler cylinder lenses to be manufactured.
  • the front screen (5) would be smooth.
  • leads such an overlay especially in the edge area due to the oblique incidence of light considerable compensation effort.
  • Aspherical scattering elements can of course also be provided, above all with larger scattering angles and when uniform brightness is required.
  • a pivoting of the reference axis R can, as in the description of FIG. 3 mentioned, by prism overlaying all scattering elements (6), as well as by Move the circuit board (2).
  • Vertically adjacent scattering elements (6) have in usually a height difference and form small steps on the inside of the Windscreen (5), which are a cause of light reflections from sunlight. Will everyone Scattering elements superimposed on a vertical prism, their surfaces are accordingly inclined. As a result, the levels can be minimized or with the same size horizontal scattering angles even disappear completely. The caused by this The reference axis must then be moved by moving the circuit board (2) be compensated.
  • Moving the circuit board (2) can also be applied to the inclination of the Adapt the reference axis R to the road conditions, because the optics are usually fixed in a signal generator is installed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Led Device Packages (AREA)
  • Traffic Control Systems (AREA)
EP00890368A 1999-12-09 2000-12-07 Emetteur de signaux à diodes électroluminescentes avec plusieurs zones de diodes Withdrawn EP1107210A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT206799A AT409805B (de) 1999-12-09 1999-12-09 Leuchtdioden-signalgeberoptik
AT206799 1999-12-09

Publications (2)

Publication Number Publication Date
EP1107210A2 true EP1107210A2 (fr) 2001-06-13
EP1107210A3 EP1107210A3 (fr) 2006-04-19

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Cited By (26)

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WO2002029755A1 (fr) * 2000-10-05 2002-04-11 Power Signal Technologies, Inc. Appareil a feu de signalisation routiere dote d'un couvercle a semi-conducteurs solidaire
DE102004007211B4 (de) * 2004-02-13 2006-09-07 Osram Opto Semiconductors Gmbh Signalgeber und Leuchtmittel
DE102007034373A1 (de) * 2007-07-24 2009-02-05 Dialight Garufo Gmbh Signalleuchte
WO2009037720A1 (fr) * 2007-09-17 2009-03-26 Wissen Lux S.P.A. Dispositif d'éclairage à del
DE102008033385A1 (de) * 2008-07-16 2010-02-18 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsvorrichtung und Serie von Beleuchtungsvorrichtungen
US7841750B2 (en) 2008-08-01 2010-11-30 Ruud Lighting, Inc. Light-directing lensing member with improved angled light distribution
US8348475B2 (en) 2008-05-23 2013-01-08 Ruud Lighting, Inc. Lens with controlled backlight management
US8388193B2 (en) 2008-05-23 2013-03-05 Ruud Lighting, Inc. Lens with TIR for off-axial light distribution
WO2013119692A3 (fr) * 2012-02-06 2013-10-31 Avery Dennison Corporation Projection à direction active
USD697664S1 (en) 2012-05-07 2014-01-14 Cree, Inc. LED lens
CN101761870B (zh) * 2010-01-28 2014-01-29 深圳市邦贝尔电子有限公司 显示灯
USD718490S1 (en) 2013-03-15 2014-11-25 Cree, Inc. LED lens
EP2881654A3 (fr) * 2011-03-04 2015-07-15 GE Lighting Solutions, LLC Dispositif d'éclairage
EP2587129A3 (fr) * 2011-10-25 2015-11-11 Lite-On Technology Corporation Dispositif de feu de signalisation de trafic
US9255686B2 (en) 2009-05-29 2016-02-09 Cree, Inc. Multi-lens LED-array optic system
US9423096B2 (en) 2008-05-23 2016-08-23 Cree, Inc. LED lighting apparatus
CN105909989A (zh) * 2016-06-17 2016-08-31 上海策元实业有限公司 一种截光式led平板灯
US9523479B2 (en) 2014-01-03 2016-12-20 Cree, Inc. LED lens
US9541258B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for wide lateral-angle distribution
US9541257B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for primarily-elongate light distribution
US10408429B2 (en) 2012-02-29 2019-09-10 Ideal Industries Lighting Llc Lens for preferential-side distribution
US10468566B2 (en) 2017-04-10 2019-11-05 Ideal Industries Lighting Llc Hybrid lens for controlled light distribution
CN114460792A (zh) * 2022-01-28 2022-05-10 杭州利珀科技有限公司 一种穹顶光源装置及其使用方法
WO2022183230A1 (fr) * 2021-03-03 2022-09-09 Dr. Techn. Josef Zelisko Fabrik Für Elektrotechnik U. Maschinenbau Gesellschaft M.B.H Élément de signal optique sans éblouissement
US11869358B2 (en) 2021-10-29 2024-01-09 Nortak Software Ltd. System and method for warning of a presence of a mobile target
CZ309937B6 (cs) * 2023-02-17 2024-02-14 AŽD Praha s.r.o. Svítilna, zejména pro světelnou signalizaci určenou pro řízení provozu na pozemních komunikacích

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DE102014205225A1 (de) * 2014-03-20 2015-09-24 Siemens Aktiengesellschaft Signalgeber zur Abgabe eines Lichtsignals
DE102014205453A1 (de) * 2014-03-24 2015-09-24 Siemens Aktiengesellschaft Signalgeber zur Abgabe eines Lichtsignals

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AT48899B (de) 1910-09-22 1911-07-10 Emil Graf Eintragnadelantriebsvorrichtung für Webstühle mit feststehender Schußspule.
US4733335A (en) 1984-12-28 1988-03-22 Koito Manufacturing Co., Ltd. Vehicular lamp
WO1998016777A1 (fr) 1996-10-16 1998-04-23 Philips Electronics N.V. Lampe de signalisation a diodes electroluminescentes

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002029755A1 (fr) * 2000-10-05 2002-04-11 Power Signal Technologies, Inc. Appareil a feu de signalisation routiere dote d'un couvercle a semi-conducteurs solidaire
US6439743B1 (en) 2000-10-05 2002-08-27 Power Signal Technologies Inc. Solid state traffic light apparatus having a cover including an integral lens
DE102004007211B4 (de) * 2004-02-13 2006-09-07 Osram Opto Semiconductors Gmbh Signalgeber und Leuchtmittel
DE102007034373A1 (de) * 2007-07-24 2009-02-05 Dialight Garufo Gmbh Signalleuchte
DE102007034373B4 (de) * 2007-07-24 2009-05-14 Dialight Garufo Gmbh Signalleuchte
WO2009037720A1 (fr) * 2007-09-17 2009-03-26 Wissen Lux S.P.A. Dispositif d'éclairage à del
US9657918B2 (en) 2008-05-23 2017-05-23 Cree, Inc. Light fixture with wide-angle light distribution
US8348475B2 (en) 2008-05-23 2013-01-08 Ruud Lighting, Inc. Lens with controlled backlight management
US8388193B2 (en) 2008-05-23 2013-03-05 Ruud Lighting, Inc. Lens with TIR for off-axial light distribution
US9476570B2 (en) 2008-05-23 2016-10-25 Cree, Inc. Lens with controlled backlight management
US9423096B2 (en) 2008-05-23 2016-08-23 Cree, Inc. LED lighting apparatus
DE102008033385A1 (de) * 2008-07-16 2010-02-18 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsvorrichtung und Serie von Beleuchtungsvorrichtungen
US7841750B2 (en) 2008-08-01 2010-11-30 Ruud Lighting, Inc. Light-directing lensing member with improved angled light distribution
US9255686B2 (en) 2009-05-29 2016-02-09 Cree, Inc. Multi-lens LED-array optic system
US9689552B2 (en) 2009-05-29 2017-06-27 Cree, Inc. Multi-lens LED-array optic system
CN101761870B (zh) * 2010-01-28 2014-01-29 深圳市邦贝尔电子有限公司 显示灯
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AT409805B (de) 2002-11-25
EP1107210A3 (fr) 2006-04-19

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