EP3465315A1 - Optische linse für beleuchtungszwecke - Google Patents
Optische linse für beleuchtungszweckeInfo
- Publication number
- EP3465315A1 EP3465315A1 EP17731813.6A EP17731813A EP3465315A1 EP 3465315 A1 EP3465315 A1 EP 3465315A1 EP 17731813 A EP17731813 A EP 17731813A EP 3465315 A1 EP3465315 A1 EP 3465315A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lens
- light
- exit surface
- light exit
- lenses according
- 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- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/048—Refractors for light sources of lens shape the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
-
- 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
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
-
- 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
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/101—Outdoor lighting of tunnels or the like, e.g. under bridges
-
- 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
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
-
- 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]
Definitions
- the invention is in the field of traffic engineering and relates to specially designed lenses for use in lighting devices for tunnels and the lighting devices containing the lenses.
- the illumination of traffic tunnels is a challenge for optics design and lighting design due to strict lighting standards.
- the tunnel access area is critical because the human eye has to adapt to the rapidly changing brightness conditions (adaptation).
- the perceived glare in the passage of the tunnel is an important criterion and standardized by the legislation.
- An illumination concept that has become established in the tunneling sector in recent years is the so-called co-jet and counter-jet principle.
- the co-jet principle the projection of the main radiation direction on the road runs parallel to the direction of travel, while the counter-jet principle, the projection is anti-parallel to the direction of travel.
- the mode of operation is also shown in FIG. 4, with the co-jet principle on the left and the counterjet principle on the right.
- EP 2093484 B1 discloses tunnel luminaires which contain a heat buffer for buffering external ambient or external heat acting on the luminaire, comprising a heat store (2) with a phase changer whose phase change temperature ranges from solid to liquid and / or or from liquid to gaseous below the permissible limit operating temperature of the luminaire and above the normal operating temperature of the luminaire.
- a heat accumulator absorbs so to speak the heat acting on the lamp in case of fire, whereby heating of the lamp or its components over the respective permissible limit temperature is prevented.
- the document contains no disclosure in the direction of the design of an optical lens.
- lamps are described in which the lenses are arranged exposed and one side on the opposite side facing the direction of travel of the lenses each have a hump-shaped edge elevation, which is provided on its outer side with an inwardly effective reflective coating , has a height above the base of the lens of at least 125% of the maximum height of the remaining body of the lens and substantially captures scattered light emitted by soiling on the light exit surface of the lens opposite to the direction of travel.
- EP 2112428 Bl (BARTENBACH) is a road, in particular tunnel lamp with an asymmetrical light intensity distribution.
- the luminous flux of the luminaire is thereby limited to a half space lying behind the luminaire in the direction of travel.
- the lamp has a Ausblendraum, which includes the viewed in the direction of travel in front of the light half-space.
- Optics systems with asymmetrical light distributions have the advantage that they allow well adapted light distributions.
- the previous approach is a transparent freeform lens, also with cover and / or OperaverLiteung the lateral surface to produce the desired light distribution.
- the prior art has considerable problems: in particular, a part of the luminous flux is absorbed by the cover, whereby the efficiency of the luminaire drops below 60%.
- the partial mirroring of the lateral surface is disadvantageous, because it must be used a complex lens shape to obtain the desired light deflection on the mirrored surface.
- the partial mirroring of individual delimited lateral surfaces also have a negative effect on the producibility of the optical system.
- the light distributions produced are highly dependent on production tolerances. In general, previous optical systems have the disadvantage that their light distributions do not have the optimum accuracy and thus lead to luminous flux losses or disturbing glare.
- the object of the present invention has therefore been to provide an alternative lighting concept for tunnels that completely overcomes the above-described disadvantages of the prior art.
- the following subtasks should all be solved simultaneously:
- a first subject of the invention relates to optical lenses for illumination purposes (L), comprising a jacket (C) and a light exit surface (B), wherein the underside (A) is formed flat and has an optically relevant recess for receiving a light source, characterized that the lens (L)
- (b) has a light exit surface (B) with the two vertices (bl) and (b2), wherein (bl) and (b2) represent the highest and lowest vertices at the transition from the light exit surface (B) to the jacket (C).
- the outer surface of the lens molding is understood, which connects to the light exit surface and the flat bottom.
- the jacket represents the outer surface of the lens molding, without the light exit surface and without the flat underside with its light entrance surface.
- the lenses are further distinguished by the fact that the light exit surface (B) is designed either flat or curved. If the surface is flat, then the base area (Bl) of the light exit surface and the light exit surface (B) coincide. If, on the other hand, the surface is curved, that is to say concave, convex or concave-convex, the base surface (Bl) of the light exit surface and the tangential plane to the light exit surface (B) are parallel to each other.
- the lenses are viewed from the side (which means with regard to the edge of the base Bl) not necessarily symmetrical.
- the lenses according to the invention can also have mounting aids in some embodiments on their underside.
- These assembly aids can in principle be any known assembly aids.
- these can be tabs or, in particular, one or more positive-locking connection elements.
- it is particularly preferred that the lenses according to the invention have on their underside a form-locking connecting element in the form of a flange running around the lens.
- the optical lenses according to the present invention which have an assembly aid on their underside, accordingly have an outer surface extension of the underside.
- the lateral surface is limited downwards by the edges of the mounting aids.
- the reflective surface is limited by the edges of the mounting aids.
- the assembly aids are several assembly aids in the form of tabs or the like
- the lateral surface C is located both above the respective upper edges of the tabs and in the spaces between the corresponding tab edges.
- the positive connection element is a flange
- the reflective surface of the jacket C or the jacket C extends to the flange upper edge.
- the lenses according to the invention are anchored better (more firmly) in the potting compound. This considerably increases the stability of the corresponding assembly.
- the optically relevant recess for receiving the light source is a curved light entry surface, which is concave or concave-convex incorporated in the lens body; Accordingly, it can also be referred to as a concave or concave-convex in the lens body incorporated curved light entrance surface.
- a concavo-convex curved light entrance surface has areas that are concavely curved.
- the curved light entry surface is elliptical.
- the light entry surface is not curved, but, for example, plan, square, square, etc .; however, it must be ensured that enough light can enter the lens.
- a curved light entrance surface which may be elliptical, a reflective, preferably reflective coated shell, and a flat or curved light exit surface, which may be inclined.
- the shape of the lens system is preferably reduced to simple basic geometrical shapes.
- the generation of the optical system by a small number (> 2) of simply parameterized surfaces and bodies results in a lens shape which is easy to process in production.
- the limitations in the design of the light distribution due to the simple basic shape of the lens are offset by the fully coated reflective edge surface.
- a light beam can be reflected at any incident angle at the edge surface with high efficiency, without relying on the TIR effect.
- the light output according to the present invention is higher, since no Fresnel losses occur in the reflection at the edge of the lens.
- a light beam can be reflected at any angle of incidence without relying on the TIR effect. This results in further degrees of freedom in the design of the Light distribution.
- so-called “frustrated total reflection” can not occur, as a result of which the light output couples into adjacent media
- the lenses consist of a single piece of lens body and, if appropriate, of the coating.
- the perceived radiating surface is significantly reduced in comparison to conventional lens systems.
- This offers the possibility of a nearly perfect glare reduction in the co-jet principle as well as high luminous efficacy yields with co- and counter-beam luminaires, whereby the fully coated mirror coating is no problem for common coating processes.
- the jacket i. the outer surface of the lens molding to be coated only in certain areas, namely in the areas in which the light emitted from the lighting body is not totally reflected within the lens body anyway and thus can not pass through the jacket.
- a positive angle ⁇ is created by a rotation to the right in the direction of the vertex (b2), a negative angle by a rotation to the left, ie in the direction of the vertex (bl).
- the inclination angle ⁇ ranges from -90 ° to + 90 °.
- the angle range ⁇ is about -45 ° to about + 45 ° and in particular 0 to about +30 °.
- FIG. 1b differs from FIG. 1a only in that a flange is now shown in the lower part.
- the jacket C leads to the upper end of the flange.
- the inclination of the base area influences the main emission direction.
- the curvature of the light exit surface influences the light distribution.
- the angle of inclination of the base area ⁇ and the curvature of the light exit surface can be adapted to the lighting requirements.
- Figure 2a shows a wire frame sketch of a lens according to the invention, in which the curved surface above the base surface Bl of the light exit surface is not visible due to the perspective.
- the lens body can in principle be made of any translucent polymer which can be coated. Preferably, however, they are vitreous bodies, since they are distinguished by particularly precise light irradiation combined with high resistance.
- the nature of the coating can also be of a variety of types, ranging from aluminum vapor deposition, to coating with silver, gold or other metals. However, it is advisable to carry out the coating or to adjust such a layer thickness that results in a reflectivity of at least 80%, preferably at least 90 and in particular at least 95%.
- a coating method for example, wet-chemical processes in question, but also CVD, PVD or sputtering in particular.
- the light sources can in this context LED, OLED, LET or OLET represent; also a laser illumination is possible.
- LED also referred to as light-emitting diodes, constitute light-emitting semiconductor components whose electrical properties correspond to those of a diode. Flows through the diode electric current in the forward direction, Thus, it emits light, IR radiation to UV radiation with a wavelength dependent on the semiconductor material and its doping.
- High power light emitting diodes operate at higher currents than 20 milliamps. There are special requirements for heat dissipation, which are expressed in special designs.
- the heat can be dissipated via the power supply lines, the reflector pan or heat conductors incorporated in the light-emitting diode body.
- Other suitable LED versions that can be used as light sources in the context of the present invention include the direct wire bonding of the light-emitting diode chip on the board (chip on board) and the subsequent casting with silicone compounds.
- the LEDs used as light sources can also be multicolored. Multi-colored light-emitting diodes consist of several (two or three) diodes in one housing.
- a quasi-continuous color change can be realized via a variable pulse width ratio of a suitable alternating current.
- LET corresponding transistors
- the support has at least one ventilation hole in the immediate vicinity of the light source (s) and within the base surface (s) of the recess (s) of the optical lens (s) according to the invention, whereby volatile constituents which are For example, may come from the bonding of the lenses on the support, can diffuse out of the / lens recess (s) out.
- volatile constituents which are For example, may come from the bonding of the lenses on the support, can diffuse out of the / lens recess (s) out.
- the light exit surfaces B of all lenses on the carrier are aligned in the same direction.
- a further subject of the invention also relates to a method for illumination, comprising the following steps:
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16173022 | 2016-06-04 | ||
PCT/EP2017/063282 WO2017207683A1 (de) | 2016-06-04 | 2017-06-01 | Optische linse für beleuchtungszwecke |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3465315A1 true EP3465315A1 (de) | 2019-04-10 |
Family
ID=56203124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17731813.6A Withdrawn EP3465315A1 (de) | 2016-06-04 | 2017-06-01 | Optische linse für beleuchtungszwecke |
Country Status (4)
Country | Link |
---|---|
US (1) | US20200200361A1 (de) |
EP (1) | EP3465315A1 (de) |
CN (1) | CN109313325A (de) |
WO (1) | WO2017207683A1 (de) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20200571U1 (de) * | 2002-01-15 | 2002-04-11 | Fer Fahrzeugelektrik Gmbh | Fahrzeugleuchte |
US7799509B2 (en) | 2005-06-04 | 2010-09-21 | Samsung Electronics Co., Ltd. | Photosensitive resin composition, method of manufacturing a thin-film transistor substrate, and method of manufacturing a common electrode substrate using the same |
DE102008009945A1 (de) * | 2008-02-20 | 2009-08-27 | Christian Bartenbach | Tunnelleuchte |
DE102008019944A1 (de) | 2008-04-21 | 2009-10-29 | Christian Bartenbach | Tunnelleuchte sowie Tunnelbeleuchtungssystem mit einer Vielzahl solcher Tunnelleuchten |
US8465180B2 (en) * | 2008-05-20 | 2013-06-18 | Koninklijke Philips N.V. | Optical element for asymmetric light distribution |
US8002435B2 (en) * | 2008-06-13 | 2011-08-23 | Philips Electronics Ltd Philips Electronique Ltee | Orientable lens for an LED fixture |
US7766509B1 (en) * | 2008-06-13 | 2010-08-03 | Lumec Inc. | Orientable lens for an LED fixture |
US8246212B2 (en) * | 2009-01-30 | 2012-08-21 | Koninklijke Philips Electronics N.V. | LED optical assembly |
US9885458B2 (en) * | 2010-01-25 | 2018-02-06 | Light Prescription Innovators, Llc | Off-axis collimation optics |
WO2012029002A1 (en) * | 2010-08-31 | 2012-03-08 | Koninklijke Philips Electronics N.V. | Led-based lighting units with substantially sealed leds |
WO2012080889A1 (en) * | 2010-12-16 | 2012-06-21 | Koninklijke Philips Electronics N.V. | Optical device for a led illumination apparatus shaping an elongated illuminated area |
CN202253364U (zh) * | 2011-08-19 | 2012-05-30 | 深圳市百康光电有限公司 | Led道路交通信号灯透镜 |
DE102011111953A1 (de) | 2011-08-30 | 2013-02-28 | Bartenbach Holding Gmbh | Tunnelleuchte |
DE102011082844A1 (de) * | 2011-09-16 | 2013-03-21 | Zumtobel Lighting Gmbh | Beleuchtungsanordnung insbesondere zur Rettungswegbeleuchtung |
GB2506138B (en) * | 2012-09-20 | 2014-11-19 | Cooper Technologies Co | Lens and light emitting device incorporating a lens |
US9217554B1 (en) * | 2013-02-15 | 2015-12-22 | Rpc Photonics, Inc. | Optical element providing oblique illumination and apparatuses using same |
US9239141B1 (en) * | 2013-02-15 | 2016-01-19 | Rpc Photonics, Inc. | Optical element providing oblique illumination and apparatuses using same |
EP3309134B1 (de) | 2014-07-05 | 2020-04-15 | Norddeutsche Kunstoff-und Elektrogesellschaft Stäcker mbH & Co. KG | Verwendung einer linse oder oder beleuchtungsvorrichtung zur tunnelbeleuchtung |
-
2017
- 2017-06-01 EP EP17731813.6A patent/EP3465315A1/de not_active Withdrawn
- 2017-06-01 US US16/305,586 patent/US20200200361A1/en not_active Abandoned
- 2017-06-01 CN CN201780033891.2A patent/CN109313325A/zh active Pending
- 2017-06-01 WO PCT/EP2017/063282 patent/WO2017207683A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
CN109313325A (zh) | 2019-02-05 |
WO2017207683A1 (de) | 2017-12-07 |
US20200200361A1 (en) | 2020-06-25 |
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