WO2006033040A1 - Led collimator element with a semiparabolic reflector - Google Patents
Led collimator element with a semiparabolic reflector Download PDFInfo
- Publication number
- WO2006033040A1 WO2006033040A1 PCT/IB2005/052976 IB2005052976W WO2006033040A1 WO 2006033040 A1 WO2006033040 A1 WO 2006033040A1 IB 2005052976 W IB2005052976 W IB 2005052976W WO 2006033040 A1 WO2006033040 A1 WO 2006033040A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- collimator
- reflector
- led
- irradiated
- light
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
-
- 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]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S362/00—Illumination
- Y10S362/80—Light emitting diode
Definitions
- the invention relates to an LED lighting device, in particular for motor vehicle headlamps, in which the light emitted by an LED element is almost entirely deflected by a semiparabolic reflector.
- LED elements With vehicle headlamps, there are generally produced firstly a so-called main beam and secondly a low beam.
- the main beam provides a maximum possible illumination of the traffic space.
- the low beam provides a compromise between as good an illumination as possible from the perspective of the vehicle driver and as little dazzling of oncoming vehicles as possible.
- a lighting pattern has been developed in which no light is irradiated into an emission plane of the headlamp above a horizontal line.
- the headlamp must therefore form a sharp cut-off in order that the oncoming traffic is not dazzled under normal conditions on a straight road.
- the headlamp with the region directly below the cut-off is to illuminate that traffic space which has the greatest distance from the vehicle, on the other hand the greatest intensity of the headlamp must be provided directly at the cut-off.
- the light source must be able to illuminate with a high intensity a space at a distance of approximately 75 m from the light source, and secondly it must form a sharp cut-off between the well-illuminated space and the non- illuminated area lying behind it.
- a sufficient intensity in the well-illuminated area is directly related to the brightness (luminance) of the LED element and the performance of the optics which cooperate therewith.
- a sharp cut-off is a design requirement.
- an LED is placed on a support substrate.
- the support substrate and with it the LED are curved over by a parabolic reflector which meets the support substrate on one side and on the other side forms a light emission face by being spaced apart from the support substrate.
- the LED on the support substrate is accordingly thus located in a space between the support substrate and the parabolic reflector. It is arranged in such a way that the light radiation coming therefrom is almost completely reflected at the reflector and most of it is emitted as parallel radiation via the light emission face.
- an LED lighting device in particular for use in motor vehicle headlamps, which comprises an LED element, the light of which is emitted in a mainly indirect manner on account of reflection.
- Said LED lighting device also comprises a collimator which emits the light emitted by the LED element through a collimator opening in a collimated manner, and also a reflector which has a semiparabolic concave reflective surface, an irradiated face, a focal point in the irradiated face and an emission face from which light is emitted in an emission direction of the reflector and which encloses an angle with the irradiated face.
- the collimator is designed and/or arranged in such a way that the collimated light coming from the collimator, as seen in the emission direction, is irradiated into the irradiated face either completely in front of or completely behind the focal point.
- a collimator is to be understood as meaning a reflective face which essentially intercepts all of the light of the LED element which is not emitted in the emission direction.
- the collimator is therefore located directly adjacent to the LED chip.
- the collimator may be at a short distance of approx. 0.5 mm from the LED. However, the distance is preferably even less than 0.5 mm, particularly preferably below approx. 0.25 mm.
- the emission direction of an LED element is understood to mean the vertical with respect to the plane in which the chip of the LED element is arranged.
- the focal point of the reflector is the focus thereof. Light which is irradiated in at said focus point is always emitted in the same direction by the reflector, namely the emission direction, regardless of the direction from which it arrives on the reflector from the focal point, that is to say all the light rays irradiated into the reflector at the focal point in the irradiated face are emitted from the emission face in a parallel manner.
- the focal point is located in the irradiated face of the reflector at which light radiation is coupled into the reflector. The edges of the irradiated face are essentially determined by the geometry of the reflector. Reflector and irradiated face meet at a rear edge in the emission direction.
- the irradiated face meets the emission face. It usually coincides with an opening face of the reflector and generally runs at right angles to the irradiated face and to the emission direction of the reflector.
- the LED elements are inorganic solid state LEDs since these are currently available with sufficient intensity. Nevertheless, they may of course also be other electroluminescent elements, for example laser diodes, other light- emitting semiconductor elements or organic LEDs, provided these have sufficient power.
- the term "LED” or “LED element” is therefore to be regarded in this document as a synonym for any type of appropriate electroluminescent element.
- the invention thus moves away from a design in which a semiparabolic reflector deflects the radiation coming in a non-directional manner from an LED element as far as possible in a desired direction. Rather, the invention follows the principle firstly of collimating the radiation emitted in a non-directional manner (Lambert's radiation) of an LED element and then introducing the thus aligned radiation into a semiparabolic reflector in a targeted manner in order to deflect it completely in a desired direction. To this end, it provides a collimator which collimates the light of one or more LED elements and irradiates it in a substantially bundled manner at its opening face into a reflector.
- a collimator which collimates the light of one or more LED elements and irradiates it in a substantially bundled manner at its opening face into a reflector.
- the reflector can be much smaller since it can be designed in a targeted manner for the radiation emitted by the collimator and does not have to "catch" any scattered radiation.
- the arrangement of the collimator can ensure that almost all of the light power of the LED element(s) is intercepted.
- the geometry of the semiparabolic reflector is used to reliably produce a sharp cut-off. To this end, it is important to irradiate the light radiation completely in front of or completely behind the focal point of the reflector, possibly including the focal point, when seen in the emission direction. The focal point therefore marks a boundary which may however also be included in the irradiation of the light.
- the semiparabolic reflector is curved only in a two- dimensional manner and accordingly has a focal line.
- the two-dimensionally curved semiparabolic reflector has, in a sectional view parallel to the emission direction of the reflector, in principle the same geometric design as a three-dimensionally curved reflector in a section in the emission direction and through the focal point.
- the two- dimensionally curved reflector has the same unmodified design in a direction orthogonal to the sectional plane, a focal line is produced by arranging the focal points of each sectional view next to one another in rows.
- the focal line has the same geometric significance as the focal point of a three-dimensionally curved reflector, and for this reason no distinction is made below between focal point and focal line and only the respective sectional planes of the reflectors will be considered.
- the collimator opening is arranged between the focal point and an edge of the irradiated plane.
- This arrangement ensures that no light power of the LED element is lost upon leaving the collimator opening when light is coupled into the reflector.
- This purpose can also be achieved by the shape of the collimator opening.
- the collimator opening is round or as an alternative is rectangular, in particular square. In order to make optimal use of the irradiated face and to prevent losses, the collimator opening can thus be adapted to the contour of the irradiated face. In the case of a two-dimensionally curved reflector with a square or rectangular irradiated face for example, the collimator opening may likewise be square or rectangular.
- the LED lighting device For use as a motor vehicle headlamp, for example, the LED lighting device must have, besides a sharp cut-off and sufficient brightness, also a gradient in terms of brightness distribution. A particularly high brightness should be produced directly at the cut ⁇ off.
- a further advantageous embodiment of the invention provides that the unit consisting of LED element and collimator is designed in an asymmetrical manner, in order to produce this gradient.
- the asymmetry in the unit consisting of LED element and collimator may consist on the one hand in an asymmetrical collimator or on the other hand in a tilted arrangement of the LED element with respect to a symmetrical collimator.
- the asymmetrical LED collimator element is preferably arranged in such a way that it irradiates the light completely in front of or behind the focal point, including the focal point.
- the LED collimator element is arranged with its first edge in the region of the focal point, so that it radiates the light highly bundled at the first edge onto the focal point of the semiparabolic reflector.
- the formation of a sharp cut-off is thus assisted in design terms in two ways, namely, on the one hand, as described above, by the asymmetrical design of the LED collimator element.
- the semiparabolic mirror also serves this purpose: by radiating light either in front of or behind the focal point of the semiparabolic reflector, it is ensured that the light is emitted from the semiparabolic reflector only in a region which is sharply delimited on one side by the emission direction of the semiparabolic reflector.
- the invention consequently makes use of the two effects mentioned above in order to produce a sharp cut-off.
- a further advantageous embodiment of the invention therefore provides that a number of LED elements with collimators are arranged next to one another in a direction transverse to the emission direction and jointly irradiate into the reflector.
- a two-dimensionally curved reflector is particularly suitable for an arrangement of almost any desired number of LED collimator elements next to one another. Compared to a conventional arrangement with a number of reflectors next to one another, the arrangement described above makes it possible to achieve a higher light power with respect to the width of such a lighting device.
- the manufacture of the collimators for each LED element may also require high precision and a considerable expense. It is therefore advantageous if one collimator or a number of collimators are each assigned a group of LED elements. As a result, the light power of each individual collimator can be considerably increased.
- FIG. 1 shows a simplified perspective diagram of the ray courses of a headlamp on a road.
- Fig. 2 shows a section through a collimator.
- Fig. 3 shows a section through a lighting device comprising a collimator and a reflector.
- Fig. 4 shows a graph for configuring a reflector in dependence on an opening angle of the collimator.
- Fig. 5 shows an overall view of an LED collimator element in conjunction with a parabolic reflector and the associated radiation course.
- Fig. 6 shows a detailed view of part of the diagram of Fig. 5.
- Fig. 7 shows an embodiment with a number of collimators.
- Fig. 8 shows lighting images of two different lighting devices.
- Fig. 1 schematically shows the radiation course of the light of a headlamp a on a road b.
- the headlamp a is symbolized by an emission face c of an LED collimator element and by secondary optics d.
- the emission face c has four boundary lines between the corners r, s, t and u.
- the road b is divided into two lanes f and g by a center line e.
- a vehicle (not shown) comprising the headlamp a is located in the lane f.
- the lane g is used for oncoming traffic.
- the headlamp a illuminates a traffic space h and produces an image there which lias the corners r', s', t' and u'.
- the light coming from the emission face c strikes the secondary optics d.
- the latter is usually formed by a lens which projects the image which impinges thereon in a t>ack- to-front and upside-down manner. Since the emission plane c is at an angle ⁇ with respect to the lane f which is to be illuminated, the image thereof which is produced on the lane is distorted. Despite an equal length of the dimension from r to s and from t to u, the dimension from t' to u' is a multiple length of the dimension from r' to s'. This distortion also has to be taken into account when illuminating the traffic space h.
- collimators are used to bundle the light.
- a collimator 1 is shown in Fig. 2.
- An LED element 3 which emits light in a main emission direction 4 through a collimator opening face 5.
- the base 2 of the collimator has a circular cross section with a radius T 1 , and the collimator opening 5 which is likewise circular has the radius r 2 .
- the collimator has the shape of a truncated c one, the bottom face of which forms the collimator opening 5 and the top face of which forms the base 2.
- the lateral face 6 of the collimator 1 is inclined at an angle ⁇ with respect to the axis of rotation of the truncated cone, which coincides with the main emission direction 4.
- an angle B 1 as the emission angle of the LED 3 with respect to the main emission direction 4
- an angle ⁇ 2 as the emission angle of the light at the collimator opening 5 with respect to the main emission direction 4
- n ⁇ as the refractive index in the collimator 1 and with n 2 for the refractive index outside the collimator 1 in front of the collimator opening 5
- the following equation is generally obtained as the ratio between a first emission situation directly at the LED element 3 and a second emission situation at the collimator opening 5 of the collimator 1:
- n ! n 2 .
- the invention makes use of this by irradiating the thus bundled radiation at the collimator opening 5 directly into a semiparabolic reflector 7 as shown in Fig. 3.
- the reflector 7 comprises a semiparabolic concave reflective surface 8, an irradiated face 9 and an emission face 10.
- the irradiated face 9 adjoins the reflector 7 at a first edge 11 and contains a focal point F.
- Light radiation which is irradiated into the reflector at this point via the irradiated face 9 and is reflected on the reflective surface 8 thereof is emitted out of the reflector again at right angles to the emission face 10, regardless of the angle at which it entered the reflector 7 at the focal point F.
- This ray path is shown by way of example by the arrows 12 and 13.
- the emission face 10 extends from a lower edge 14 of the reflector 7 to an imaginary edge 15 at which it meets the irradiated face 9 at right angles.
- the reflector 7 has a length 1 and a height h, wherein 1 corresponds to the size of the entry face 9 and h corresponds to the size of the emission face 10.
- the distance of the focal point F from the first edge 11 is designated f, and the distance between the focal point F and the edge 15 is accordingly 1 - f.
- the collimator 1 is arranged with its collimator opening 5 between the focal point F and the first edge 11. In an extreme case, an internal dimension of the collimator opening 5 could assume the length of the distance f. For a given collimator, the following equation then applies for the design of the reflector: (2) f ⁇ 2 x r 2
- the reflector 7 can be dimensioned such that on the one hand all of the light emitted from the collimator opening 5 is caught and deflected and on the other hand the reflector 7 is not made unnecessarily large.
- the length 1 of the reflector 7 is determined by a light ray which enters the reflector 7 at the outermost edge of the collimator opening 5 and at the focal point F.
- the length 1 does not need to be any greater because the reflector 7 does not catch any more light as a result. On the other hand, it cannot be any smaller since this would lead to losses in terms of emitted radiation.
- the height of the reflector 7 becomes:
- This equation can be used to determine the geometry of the reflector 7 as a function of the angle ⁇ .
- Fig. 4 shows a graph in which the values for r 2 , 1, f and h are given as a function of the angle ⁇ .
- the assumed basis is a fixed value for T 1 of 0.5 mm.
- the value of T 1 is selected such that the collimator 1 can be placed on an LED element 3 with a diameter of
- Fig. 3 moreover shows the formation of a sharp cut-off at the emission face
- Fig. 3 shows a section through an LED lighting device according to the invention which comprises just one LED 3, a collimator 1 and a reflector 7.
- a number of such units may be arranged next to one another, that is to say perpendicular to the plane of the drawing in Fig. 3.
- Such an arrangement is suitable in particular for arranging on a two- dimensionally curved semiparabolic reflector 7, as shown in Figs. 5 and 6.
- asymmetrical LED collimator element 17 In order to illustrate the cooperation of the semiparabolic reflector 7 with an asymmetrical LED collimator element 17, for the sake of clarity just one LED collimator element 17 on the reflector 7 is shown here.
- the perspective view of Fig. 5 corresponds to the sectional view of Fig. 2. Identical parts therefore bear the same reference numbers.
- Fig. 6 shows a detail of Fig. 5.
- the asymmetrical LED collimator element 17 is arranged with its emission face 10 in an irradiated plane 9 of the semiparabolic reflector 7 in such a way that it extends from a focal line F in the direction towards a rear edge 11 of the semi- parabolic reflector 7.
- the LED collimator element 17 is moreover oriented in such a way that its front edge 20, at which there is maximum light radiation, coincides with the focal line F.
- Fig. 7 shows an example of an embodiment comprising an arrangement of a number of collimators. Accordingly, five units consisting of LED elements 3 and collimators 1 which are arranged next to one another jointly irradiate into a two-dimensionally curved semiparabolic reflector 7.
- the collimators 1 in each case have a square collimator opening 5, so that they can be arranged next to one another in a space-saving manner.
- other collimators e.g. round collimators, could also be arranged next to one another in this way.
- Figs. 8a and 8b show the difference between a round collimator opening and a square collimator opening. They show lighting images which are in each case produced by an LED collimator element using both outline shapes of the collimator opening. A round collimator opening was used for the diagram in Fig. 8a, whereas a square collimator opening was used for the lighting image of Fig. 8b.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05799590.4A EP1794490B1 (en) | 2004-09-20 | 2005-09-12 | Led collimator element with a semiparabolic reflector |
ES05799590.4T ES2515865T3 (en) | 2004-09-20 | 2005-09-12 | LED collimator element with a semi-parabolic reflector |
CN2005800316465A CN101023295B (en) | 2004-09-20 | 2005-09-12 | LED collimator element with a semiparabolic reflector |
KR1020077009093A KR101228847B1 (en) | 2004-09-20 | 2005-09-12 | Led lighting device and headlamp system |
JP2007531906A JP4921372B2 (en) | 2004-09-20 | 2005-09-12 | LED collimator element with semi-parabolic reflector |
US11/575,330 US7513642B2 (en) | 2004-09-20 | 2005-09-12 | LED collimator element with a semiparabolic reflector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04104537 | 2004-09-20 | ||
EP04104537.8 | 2004-09-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006033040A1 true WO2006033040A1 (en) | 2006-03-30 |
Family
ID=35539678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2005/052976 WO2006033040A1 (en) | 2004-09-20 | 2005-09-12 | Led collimator element with a semiparabolic reflector |
Country Status (8)
Country | Link |
---|---|
US (1) | US7513642B2 (en) |
EP (1) | EP1794490B1 (en) |
JP (1) | JP4921372B2 (en) |
KR (1) | KR101228847B1 (en) |
CN (1) | CN101023295B (en) |
ES (1) | ES2515865T3 (en) |
TW (1) | TWI291568B (en) |
WO (1) | WO2006033040A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009034513A2 (en) * | 2007-09-11 | 2009-03-19 | Koninklijke Philips Electronics N.V. | Ambient lighting for an image display |
EP2045515A1 (en) * | 2007-10-04 | 2009-04-08 | Valeo Vision | Lighting or signalling device for an automobile |
US7566155B2 (en) | 2004-08-06 | 2009-07-28 | Koninklijke Philips Electronics N.V. | LED light system |
WO2010076741A1 (en) * | 2009-01-05 | 2010-07-08 | Philips Intellectual Property & Standards Gmbh | Lighting assembly and automotive headlamp arrangement |
WO2011098430A1 (en) * | 2010-02-15 | 2011-08-18 | Valeo Vision | Optical device for a motor vehicle including a surface light source |
FR2971464A1 (en) * | 2011-02-15 | 2012-08-17 | Valeo Vision | OPTICAL UNIT FOR SIGNALING AND / OR LIGHTING DEVICE |
EP2469596A3 (en) * | 2010-12-23 | 2014-02-05 | Automotive Lighting Reutlingen GmbH | Light module for a lighting device of a motor vehicle with semiconductor light sources arranged on a silicon substrate |
FR3025865A1 (en) * | 2014-09-16 | 2016-03-18 | Valeo Vision | LIGHTING DEVICE OF A VEHICLE USING A MULTISOURCE OPTICAL LENS |
Families Citing this family (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8591073B2 (en) * | 2005-03-03 | 2013-11-26 | Dialight Corporation | Beacon light with reflector and light emitting diodes |
US7731402B2 (en) * | 2005-03-04 | 2010-06-08 | Osram Sylvania Inc. | LED headlamp system |
US7499206B1 (en) * | 2005-12-09 | 2009-03-03 | Brian Edward Richardson | TIR light valve |
KR100765995B1 (en) * | 2006-09-15 | 2007-10-12 | 에스엘 주식회사 | Head lamp having led source |
JP2011523497A (en) * | 2008-05-13 | 2011-08-11 | ジーエルピー・ジャーマン・ライト・プロダクツ・ゲーエムベーハー | Lighting device |
EP2288847B1 (en) * | 2008-06-10 | 2018-11-14 | Philips Lighting Holding B.V. | Light output device and method |
WO2009150577A1 (en) * | 2008-06-11 | 2009-12-17 | Koninklijke Philips Electronics N.V. | Light emitting system producting beam with adjustable width. |
EP2324281B1 (en) * | 2008-09-05 | 2018-11-14 | Lumileds Holding B.V. | Lamp assembly |
US8149351B2 (en) * | 2008-12-08 | 2012-04-03 | 3M Innovative Properties Company | Passive and hybrid daylight-coupled backlights for sunlight viewable displays |
US8152352B2 (en) * | 2009-01-02 | 2012-04-10 | Rambus International Ltd. | Optic system for light guide with controlled output |
US8272770B2 (en) | 2009-01-02 | 2012-09-25 | Rambus International Ltd. | TIR switched flat panel display |
US8011803B2 (en) * | 2009-03-06 | 2011-09-06 | The Hong Kong Polytechnic University | LED automotive fog lamp |
US20100250789A1 (en) * | 2009-03-27 | 2010-09-30 | Qualcomm Incorporated | System and method of managing memory at a portable computing device and a portable computing device docking station |
US20100315836A1 (en) * | 2009-06-11 | 2010-12-16 | Brian Edward Richardson | Flat panel optical display system with highly controlled output |
US8297818B2 (en) | 2009-06-11 | 2012-10-30 | Rambus International Ltd. | Optical system with reflectors and light pipes |
US8152318B2 (en) * | 2009-06-11 | 2012-04-10 | Rambus International Ltd. | Optical system for a light emitting diode with collection, conduction, phosphor directing, and output means |
JP5516854B2 (en) * | 2009-10-08 | 2014-06-11 | スタンレー電気株式会社 | Vehicle lighting |
US8228463B2 (en) | 2009-11-18 | 2012-07-24 | 3M Innovative Properties Company | Passive daylight-coupled backlight with turning film having prisms with chaos for sunlight viewable displays |
CN102713421A (en) * | 2009-11-18 | 2012-10-03 | 拉姆伯斯国际公司 | Internal collecting reflector optics for LEDs |
TWI400410B (en) * | 2009-12-15 | 2013-07-01 | Ind Tech Res Inst | Illumination device |
JP4865883B2 (en) * | 2010-04-27 | 2012-02-01 | シャープ株式会社 | Light source device and pseudo-sunlight irradiation device provided with the same |
US8851707B2 (en) * | 2010-06-15 | 2014-10-07 | Dialight Corporation | Highly collimating reflector lens optic and light emitting diodes |
US8556473B2 (en) | 2010-06-30 | 2013-10-15 | Osram Sylvania Inc. | Lamp with a truncated reflector cup |
IT1402670B1 (en) | 2010-11-05 | 2013-09-13 | Sirio Panel Spa | LED LIGHTING DEVICE FOR AN AIRCRAFT, IN PARTICULAR FOR LANDING, TAKE-OFF, ROLLER, AND SEARCH OPERATIONS, AND AIRCRAFT INCLUDING THE LED LIGHTING DEVICE |
WO2012064903A1 (en) * | 2010-11-11 | 2012-05-18 | Bridgelux, Inc. | Led light using internal reflector |
US8746934B2 (en) * | 2010-11-12 | 2014-06-10 | Rambus Delaware Llc | Lighting assembly with asymmetrical light ray angle distribution |
US8384852B2 (en) | 2010-11-22 | 2013-02-26 | 3M Innovative Properties Company | Hybrid daylight-coupled backlights for sunlight viewable displays |
DE102011001865B4 (en) * | 2011-04-07 | 2021-10-21 | HELLA GmbH & Co. KGaA | Lighting device |
US20120281422A1 (en) * | 2011-05-06 | 2012-11-08 | Wen-Sung Lee | Bicycle illuminator for brightening traffic |
TW201300702A (en) | 2011-05-13 | 2013-01-01 | Rambus Inc | Lighting assembly |
CZ22371U1 (en) | 2011-05-13 | 2011-06-13 | Ledwell S.R.O. | Light fitting, especially reflector light fitting with rectified light flow |
CN103162107A (en) * | 2011-12-09 | 2013-06-19 | 北京通力盛达节能设备股份有限公司 | Light-emitting diode (LED) lamp and lighting method thereof |
DE102012211144B3 (en) * | 2012-04-20 | 2013-09-19 | Automotive Lighting Reutlingen Gmbh | Light module i.e. LED light module, for headlight of motor vehicle, has LED whose lighting emitting surface is extended toward light discharging portion, so that emitting light comprises basic light distribution with light-dark borders |
WO2014011748A1 (en) | 2012-07-10 | 2014-01-16 | Soundoff Signal, Inc. | Emergency vehicle light fixture |
ITTO20120988A1 (en) * | 2012-11-14 | 2014-05-15 | Light In Light S R L | ARTIFICIAL LIGHTING SYSTEM TO SIMULATE A NATURAL LIGHTING |
US8977090B2 (en) | 2012-11-29 | 2015-03-10 | Delphi Technologies, Inc. | Contoured display |
US9291340B2 (en) | 2013-10-23 | 2016-03-22 | Rambus Delaware Llc | Lighting assembly having n-fold rotational symmetry |
FR3012867A1 (en) * | 2013-11-07 | 2015-05-08 | Valeo Vision | PRIMARY OPTICAL ELEMENT, LIGHT MODULE AND PROJECTOR FOR MOTOR VEHICLE |
CN104654119A (en) * | 2013-11-25 | 2015-05-27 | 上海航空电器有限公司 | Large-angle incident LED lighting lamp capable of secondary light distribution |
FR3023600B1 (en) * | 2014-07-11 | 2021-04-16 | Valeo Vision | LIGHTING MODULE OF A MOTOR VEHICLE |
US9651211B2 (en) | 2014-10-16 | 2017-05-16 | Valeo North America, Inc. | Multi-function optical system with shared exit optic |
USD760146S1 (en) | 2014-12-23 | 2016-06-28 | Dean Andrew Wilkinson | Aircraft light unit |
US10539294B2 (en) * | 2015-01-19 | 2020-01-21 | SMR Patents S.à.r.l. | Automobile exterior rear view mirror blind spot warning indication device |
CN104697472B (en) * | 2015-02-17 | 2018-01-19 | 中国科学院西安光学精密机械研究所 | Three-dimensional Rotating Angle Measurement and its device |
KR102335719B1 (en) | 2015-09-05 | 2021-12-06 | 레이아 인코포레이티드 | Time-multiplexed backlight and multi-view display using same |
KR102235966B1 (en) * | 2015-09-05 | 2021-04-05 | 레이아 인코포레이티드 | Dual-way collimator |
PT3345042T (en) | 2015-09-05 | 2022-02-18 | Leia Inc | Dual surface collimator and 3d electronic display employing grating-based backlighting using same |
DE102016106244A1 (en) * | 2016-04-06 | 2017-10-12 | Hella Kgaa Hueck & Co. | Light source for a lighting device and lighting device with such a light source |
US11180073B2 (en) | 2016-05-21 | 2021-11-23 | JST Performance, LLC | Method and apparatus for vehicular light fixtures |
AT518552B1 (en) | 2016-08-19 | 2017-11-15 | Zkw Group Gmbh | Lighting unit for a motor vehicle headlight for generating at least two light distributions |
CN107781787B (en) * | 2016-08-29 | 2020-12-08 | 查克森科技有限公司 | Lighting device and lighting system |
TWI618957B (en) * | 2016-11-07 | 2018-03-21 | 雷亞有限公司 | A dual-direction optical collimator and a method, backlight and three-dimensional(3d) electronic display using same |
CN111316036B (en) * | 2017-11-15 | 2022-12-06 | 亮锐控股有限公司 | Lighting arrangement with spatially controllable reflector elements |
JP7017394B2 (en) * | 2017-12-14 | 2022-02-08 | 株式会社小糸製作所 | Light guide device |
US20190192879A1 (en) * | 2017-12-22 | 2019-06-27 | Inikoa Medical, Inc. | Disinfecting Methods and Apparatus |
CN112771306B (en) | 2018-10-02 | 2024-04-05 | 亮锐控股有限公司 | Optical element for a lighting device |
CN109307240A (en) * | 2018-11-30 | 2019-02-05 | 杭州光锥科技有限公司 | Windowsill lamp reflector element and windowsill lamp reflector |
GB2585687B (en) | 2019-07-11 | 2021-08-18 | Dyson Technology Ltd | Vehicle lamps |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB521268A (en) * | 1937-11-11 | 1940-05-16 | Timbro Ab | Improvements in or relating to headlamps for automobiles and similar vehicles |
JPH05109301A (en) | 1991-10-15 | 1993-04-30 | Koito Mfg Co Ltd | Head lamp for vehicle |
US5434754A (en) * | 1993-12-27 | 1995-07-18 | Ford Motor Company | Light manifold |
JPH10284757A (en) * | 1997-04-04 | 1998-10-23 | Toyoda Gosei Co Ltd | Light-emitting diode device |
US6398988B1 (en) | 1997-08-07 | 2002-06-04 | Decoma International Inc. | Thin light managing system for directing and distributing light from one or more light sources and method for making optics structures for use in the system |
US20040042212A1 (en) | 2002-08-30 | 2004-03-04 | Gelcore, Llc | Led planar light source and low-profile headlight constructed therewith |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6292505A (en) * | 1985-10-17 | 1987-04-28 | Yokogawa Electric Corp | Differential amplifier circuit |
JPS6292505U (en) * | 1985-11-30 | 1987-06-13 | ||
JPH01220301A (en) * | 1988-02-26 | 1989-09-04 | Koito Mfg Co Ltd | Head lamp for vehicle |
JP2524860Y2 (en) * | 1991-11-19 | 1997-02-05 | 株式会社小糸製作所 | Automotive headlamp |
US5278731A (en) * | 1992-09-10 | 1994-01-11 | General Electric Company | Fiber optic lighting system using conventional headlamp structures |
US6335548B1 (en) * | 1999-03-15 | 2002-01-01 | Gentex Corporation | Semiconductor radiation emitter package |
JP4256964B2 (en) * | 1998-12-24 | 2009-04-22 | スタンレー電気株式会社 | Vehicle lighting |
US6257737B1 (en) * | 1999-05-20 | 2001-07-10 | Philips Electronics Na | Low-profile luminaire having a reflector for mixing light from a multi-color linear array of LEDs |
JP4371551B2 (en) * | 2000-08-02 | 2009-11-25 | 市光工業株式会社 | Vehicle lighting |
JP4422886B2 (en) * | 2000-11-17 | 2010-02-24 | スタンレー電気株式会社 | LED light source device |
DE10140692A1 (en) | 2001-08-24 | 2003-03-27 | Hella Kg Hueck & Co | Interior lighting unit for vehicle, using lamps of differing spectral emission, forms combined output using reflector and optical guide |
JP4089866B2 (en) * | 2001-10-12 | 2008-05-28 | スタンレー電気株式会社 | Light projecting unit and LED vehicle illumination lamp comprising the light projecting unit |
DE10252228B4 (en) * | 2002-02-05 | 2010-01-14 | Automotive Lighting Reutlingen Gmbh | Headlamps, in particular for motor vehicles |
JP4080780B2 (en) | 2002-04-23 | 2008-04-23 | 株式会社小糸製作所 | Light source unit |
JP4068387B2 (en) | 2002-04-23 | 2008-03-26 | 株式会社小糸製作所 | Light source unit |
JP4143732B2 (en) | 2002-10-16 | 2008-09-03 | スタンレー電気株式会社 | In-vehicle wavelength converter |
FR2849158B1 (en) * | 2002-12-20 | 2005-12-09 | Valeo Vision | LIGHTING MODULE FOR VEHICLE PROJECTOR |
-
2005
- 2005-09-12 CN CN2005800316465A patent/CN101023295B/en active Active
- 2005-09-12 US US11/575,330 patent/US7513642B2/en active Active
- 2005-09-12 EP EP05799590.4A patent/EP1794490B1/en active Active
- 2005-09-12 JP JP2007531906A patent/JP4921372B2/en active Active
- 2005-09-12 ES ES05799590.4T patent/ES2515865T3/en active Active
- 2005-09-12 KR KR1020077009093A patent/KR101228847B1/en active IP Right Grant
- 2005-09-12 WO PCT/IB2005/052976 patent/WO2006033040A1/en active Application Filing
- 2005-09-16 TW TW094132207A patent/TWI291568B/en active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB521268A (en) * | 1937-11-11 | 1940-05-16 | Timbro Ab | Improvements in or relating to headlamps for automobiles and similar vehicles |
JPH05109301A (en) | 1991-10-15 | 1993-04-30 | Koito Mfg Co Ltd | Head lamp for vehicle |
US5434754A (en) * | 1993-12-27 | 1995-07-18 | Ford Motor Company | Light manifold |
JPH10284757A (en) * | 1997-04-04 | 1998-10-23 | Toyoda Gosei Co Ltd | Light-emitting diode device |
US6398988B1 (en) | 1997-08-07 | 2002-06-04 | Decoma International Inc. | Thin light managing system for directing and distributing light from one or more light sources and method for making optics structures for use in the system |
US20040042212A1 (en) | 2002-08-30 | 2004-03-04 | Gelcore, Llc | Led planar light source and low-profile headlight constructed therewith |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 469 (M - 1469) 26 August 1993 (1993-08-26) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01 29 January 1999 (1999-01-29) * |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7566155B2 (en) | 2004-08-06 | 2009-07-28 | Koninklijke Philips Electronics N.V. | LED light system |
WO2009034513A2 (en) * | 2007-09-11 | 2009-03-19 | Koninklijke Philips Electronics N.V. | Ambient lighting for an image display |
WO2009034513A3 (en) * | 2007-09-11 | 2009-12-10 | Koninklijke Philips Electronics N.V. | Ambient lighting for an image display |
JP2010539523A (en) * | 2007-09-11 | 2010-12-16 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Ambient light for image display |
US8356902B2 (en) | 2007-09-11 | 2013-01-22 | Koninklijke Philips Electronics N.V. | Ambient lighting for an image display |
CN101802707B (en) * | 2007-09-11 | 2012-07-04 | 皇家飞利浦电子股份有限公司 | Ambient lighting for an image display |
EP2045515A1 (en) * | 2007-10-04 | 2009-04-08 | Valeo Vision | Lighting or signalling device for an automobile |
FR2921999A1 (en) * | 2007-10-04 | 2009-04-10 | Valeo Vision Sa | LIGHTING OR SIGNALING DEVICE FOR MOTOR VEHICLE. |
JP2009094066A (en) * | 2007-10-04 | 2009-04-30 | Valeo Vision | Lighting or signalling device for motor vehicle |
US8920006B2 (en) | 2007-10-04 | 2014-12-30 | Valeo Vision | Lighting or signaling device for a motor vehicle |
CN102272518A (en) * | 2009-01-05 | 2011-12-07 | 皇家飞利浦电子股份有限公司 | Lighting assembly and automotive headlamp arrangement |
US8764259B2 (en) | 2009-01-05 | 2014-07-01 | Koninklijke Philips Electronics N.V. | Automotive headlamp with actuated rotatable collimator |
WO2010076741A1 (en) * | 2009-01-05 | 2010-07-08 | Philips Intellectual Property & Standards Gmbh | Lighting assembly and automotive headlamp arrangement |
FR2956468A1 (en) * | 2010-02-15 | 2011-08-19 | Valeo Vision | OPTICAL DEVICE, IN PARTICULAR FOR MOTOR VEHICLE |
WO2011098430A1 (en) * | 2010-02-15 | 2011-08-18 | Valeo Vision | Optical device for a motor vehicle including a surface light source |
US8960979B2 (en) | 2010-02-15 | 2015-02-24 | Valeo Vision | Optical device for a motor vehicle including a surface light source |
EP2469596A3 (en) * | 2010-12-23 | 2014-02-05 | Automotive Lighting Reutlingen GmbH | Light module for a lighting device of a motor vehicle with semiconductor light sources arranged on a silicon substrate |
FR2971464A1 (en) * | 2011-02-15 | 2012-08-17 | Valeo Vision | OPTICAL UNIT FOR SIGNALING AND / OR LIGHTING DEVICE |
EP2489925A1 (en) * | 2011-02-15 | 2012-08-22 | Valeo Vision | Optical unit for a signalling and / or lighting device |
FR3025865A1 (en) * | 2014-09-16 | 2016-03-18 | Valeo Vision | LIGHTING DEVICE OF A VEHICLE USING A MULTISOURCE OPTICAL LENS |
EP2998645A3 (en) * | 2014-09-16 | 2016-06-15 | Valeo Vision | Lighting device of a vehicle using a multi-source optical lens |
US9879838B2 (en) | 2014-09-16 | 2018-01-30 | Valeo Vision | Vehicle lighting device using a multiple-source optical lens |
Also Published As
Publication number | Publication date |
---|---|
US20070211487A1 (en) | 2007-09-13 |
TW200617431A (en) | 2006-06-01 |
EP1794490A1 (en) | 2007-06-13 |
KR20070063014A (en) | 2007-06-18 |
US7513642B2 (en) | 2009-04-07 |
ES2515865T3 (en) | 2014-10-30 |
JP4921372B2 (en) | 2012-04-25 |
JP2008513945A (en) | 2008-05-01 |
CN101023295A (en) | 2007-08-22 |
CN101023295B (en) | 2011-01-19 |
TWI291568B (en) | 2007-12-21 |
KR101228847B1 (en) | 2013-02-01 |
EP1794490B1 (en) | 2014-08-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7513642B2 (en) | LED collimator element with a semiparabolic reflector | |
EP1794491B1 (en) | Led collimator element with an asymmetrical collimator | |
US7748880B2 (en) | Vehicle lamp with overhead sign illumination | |
EP3173688B1 (en) | Lighting fixture unit and headlamp for vehicle | |
JP4089866B2 (en) | Light projecting unit and LED vehicle illumination lamp comprising the light projecting unit | |
KR100570480B1 (en) | Vehicle headlamp | |
US7108412B2 (en) | Headlamp for vehicle | |
EP3181994A1 (en) | Vehicle headlight | |
JP5281359B2 (en) | Vehicle lamp unit and vehicle lamp | |
US20050094413A1 (en) | Vehicular headlamp | |
EP2407710A2 (en) | Vehicle lamp | |
EP2484964B1 (en) | Lamp unit | |
US7121704B2 (en) | Vehicle headlamp | |
US6913377B2 (en) | Projection-type vehicular headlamp | |
JP5381351B2 (en) | Vehicle lighting | |
JP2007272207A (en) | Module for projecting light beam | |
KR102041082B1 (en) | Head Lamp | |
KR101928752B1 (en) | A lamp for vehicle | |
KR101937972B1 (en) | A lamp for vehicle | |
JP2004039473A (en) | Headlamp for vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005799590 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11575330 Country of ref document: US Ref document number: 2007211487 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007531906 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580031646.5 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077009093 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2005799590 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 11575330 Country of ref document: US |