EP2924345B1 - Luminaires avec distribution de lumière dissymétrique - Google Patents
Luminaires avec distribution de lumière dissymétrique Download PDFInfo
- Publication number
- EP2924345B1 EP2924345B1 EP14162432.0A EP14162432A EP2924345B1 EP 2924345 B1 EP2924345 B1 EP 2924345B1 EP 14162432 A EP14162432 A EP 14162432A EP 2924345 B1 EP2924345 B1 EP 2924345B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lens
- light
- optical system
- lens plate
- led
- 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.)
- Not-in-force
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Classifications
-
- 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
- F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
-
- 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
-
- 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
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
-
- 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 relates to a lens plate optics for LED lights with asymmetric light distribution according to the preamble of claim 1 and the WO 2013 / 152199A1 ,
- This document shows a deflection of the light emitted to the rear by means of an optically effective rib, which is located within the optics and deflects light falling thereon by means of total reflection in a more favorable angular range.
- the geometric boundary conditions in particular a shared lens outer surface, however, only allow the utilization of a small portion of the light emitted to the rear, because many light rays are outside the total reflection angle or missing this area altogether, or are directed to irrelevant areas and in this way many light distribution wishes can not be operated efficiently.
- the CN 103471033A describes in particular with reference to FIG. 25, the beam path of such optics, which reflects the rear light on the road side with a totally reflecting surface. It is also shown here, that light is still lost to the rear. Also the US 2014 / 0085905A1 (Broughton) shows a similar operation, in Fig. 28, the light loss can be seen to the rear.
- the object of the invention is to design a suitable optics, which deflects the entire against the mast or house walls (the back) directed and thus far lost and disturbing part of the LED light so far that this light is fully usable for the desired light distribution is and even in multiple arrangement in a lens plate allows a simple, inexpensive production of transparent plastic.
- LEDs Light-emitting diodes, or LEDs for short, have established themselves as efficient light sources in lighting technology. Although they have different designs and light qualities, but differ in their lighting properties but relatively little of each other. Most LEDs are so-called cosine emitters, because they represent optimum light output and efficiency with low production costs and small size. The light output per LED is different depending on the inner structure and size of the semiconductor, but the LED sizes differ externally only slightly. Therefore, you can Optics are developed, which are suitable in their essential parameters for a variety of marketed LED types or easily adaptable. Depending on the lighting design task, however, the optics are subject to very different demands on the light distribution to be generated.
- a light source in the form of a horizontal, planar printed circuit board offers, on which the LEDs are arranged at more or less regular intervals from one another and emit their light downwards.
- the light is distributed as desired by lenses placed in front of the LEDs, which are integrated in a common plate of transparent material, a so-called lens plate, which at the same time forms the protection against moisture and weather.
- CN 201764411 U or CN 101699148 A show such optics, which distribute the light especially in the street longitudinal direction, the oblique radiation is generated by a corresponding oblique cavity for the LED, but for a sufficiently oblique illumination in addition the lamp itself must be addressed as in CN 102102851A what is no longer wanted in Europe for reasons of glare and light pollution.
- the object of the invention is to design a suitable optics, which deflects the entire directed against the mast or house walls and thus previously lost and disturbing part of the LED light to the extent that this light is fully usable for the desired light distribution and also in multiple arrangement in a lens plate a simple, inexpensive production made of transparent plastic allowed. This is achieved by the features specified in the characterizing part of claim 1 features.
- Fig. 1 shows the basic structure of a single optic 10.
- the semiconductor 3 represents the actual light source.
- an LED lens is set over it for protection, medium power LEDs have a recess in which the semiconductor is located and potted.
- a hemispherical light emission is produced with an outwardly zero intensity, commonly known as Lambertian or cosine distribution.
- the LED is surrounded by a cavity of the optics, which is subdivided by a lens bar 4 into a main cavity 5, which accommodates the LED 2, and a secondary cavity 6.
- the lens land 4 has on the side of the main cavity 5 acting as a convex converging lens 4 a optical surface, the side of the secondary cavity 6 is here a flat surface 4 b, but could also be arbitrarily curved.
- the main cavity 5 is limited on the one hand by the converging lens 4a, on the other hand by a differently curved free-form surface 5a, which contributes particularly effective by partial scattering and collecting the light to form the desired light distribution.
- the subsequent surface 5b has no optical tasks, it only includes the Hauptkavtician 5 to the circuit board 1 down.
- the Superkavtician 6 is formed on the one hand by the surface 4b of the lens land, on the other hand by a mostly light scattering acting concave lens surface 6a.
- the adjoining surface 6b has no visual concern, it only closes off the secondary cavity 6 to the printed circuit board 1 from.
- the outside of the optic 10 consists of a lens cap 7 with variable curvature, which extends substantially over the cavity of the optics.
- a mostly crooked appearing light steering rib 8 which usually something protrudes into the lens cap 7, but could also be deducted entirely from it. It extends over the Maukavtician 6 and protrudes clearly beyond them.
- the light-guiding rib 8 consists of a convex lens surface 8a on the side of the lens barrel 7 and a freeform reflection surface 8b, mainly for total reflection, on the other side.
- the optic 10 adjoins on all sides a lens plate 9 of generally constant thickness, in which it is integrated.
- the semiconductor 3 of the LED 2 radiates hemispherical light 11, which falls either on the free-form surface 5a or on the converging lens 4a of the lens bar 4.
- the incident on the free-form surface 5a light 11a is wholly directed to the lens cap 7, from where it radiates into the room. Its intensity and direction is determined by the interaction of the free-form surface 5a and the lens cap 7.
- the incident on the converging lens 4a of the lens web 4 light 11b exits through the surface 4b of the lens land, where it was mainly focused vertically and parallel, so that it completely meets the concave lens surface 6a. There it is deflected and scattered so that it is completely totally reflected during the subsequent impact on the reflection surface 8b and emerges at the lens surface 8a of the light guide rib.
- the light undergoes 11b mostly a considerable deflection of mostly over 90 ° to almost 180 °, the four lens surfaces 4a, 4b, 6a and 8a and the reflection surface 8b additionally provide for a favorable distribution result.
- each ray of light is usefully guided through the optics and directed into the desired distribution area, towards the mast or house facade, almost no light is emitted, which also results in a very efficient solution. It is obvious, that the precise coordination of the two light paths and thereby achieved light distributions to each other, the possibilities of light control within this optics and the design variables of the free-form surfaces are only to be determined in a simulatory way. Likewise, it is clear that an optical system according to the invention can achieve very different light distributions if some geometries are changed only slightly, while retaining the functional principle.
- Fig. 2 shows the presented optics in an illustrative representation, right from front or outside, left from behind or the PCB side.
- Fig. 3 shows the light distribution obtained by photometric simulation of the illustrated optical geometry in two common representations.
- the upper graph is a common polar cross-section through the cone of light along and across the street, the lower graph shows the total light distribution in an Isocandela diagram.
- Fig. 4 shows a section through a lens plate 9 with optics 10 according to the invention.
- the smallest possible distance of adjacent optics is determined by the mutual shading, which is also safest also identifiable by simulation. It depends on the light distribution, the exact beam path and the position of the neighboring optics. Both optics must be checked for mutual shading.
- limit light beams 11c determine the minimum distance of the optics in the direction shown.
- the presented optics has no undercuts and is perfectly demoldable both by the outer mold 12a and the inner mold 12b.
- the tool costs remain low.
- the wall thickness differences are limited, so that the lens surfaces can also be formed sufficiently precise, even with large lens plates.
- different optics can be provided in a lens plate to achieve about a light distribution by mixing existing optical geometries.
- the light distribution also changes.
- adjustments to different road widths or mast conditions are possible without having to make changes to the optical geometry of the lens plate and thus the injection mold.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
Claims (11)
- Système optique de plaque de lentilles, destiné de préférence à des luminaires à distribution dissymétrique de la lumière qui présentent en tant que source lumineuse des cartes de circuit imprimé (1) comprenant des LEDs SMD (2), avec une plaque de lentilles (9) en matériau transparent, notamment en matière plastique, disposée directement devant, dans laquelle un système de lentilles optiques, destiné au guidage de la lumière, est intégré devant chaque LED, le système optique (10) étant appliqué avec sa face arrière contre la carte de circuit imprimé (1), tout autour de la LED (2), et présentant une cavité qui est divisée par une paroi de lentille (4), disposée sur le côté de la LED (2), en une cavité principale (5), destinée à recevoir la LED (2), et une cavité secondaire (6) adjacente, et une calotte de lentille (7) convexe étant réalisée sur la face extérieure, calotte sur laquelle est formée de préférence une nervure de guidage de lumière (8), caractérisé en ce que la fraction (11a) de la lumière LED (11) qui entre par la surface à formage libre (5a) de la cavité principale (5) est dirigée dans sa totalité sur la calotte de lentille (7) convexe et traverse celle-ci pour sortir dans le local, et en ce que l'autre fraction (11b) de la lumière LED (11) entre en traversant la lentille convergente (4a) de la paroi de lentille (4) latérale et sort en traversant la surface (4b) située en vis-à-vis, est focalisée dans sa totalité sur la surface de lentille (6a) de la cavité secondaire (6), d'où elle tombe sur la surface réfléchissante (8b) de la nervure de guidage de lumière (8) et est sensiblement totalement réfléchie sur celle-ci et sort dans le local en traversant la surface de lentille avant (8a) de la nervure de guidage de lumière (8).
- Système optique de plaque de lentilles selon la revendication 1, caractérisé en ce que la lumière (11) de la LED (2), qui est divisée et émise dans le local par l'intermédiaire des deux systèmes de lentilles de l'optique (10) accordés l'un avec l'autre, génère en coopération la répartition prescrite de la lumière.
- Système optique de plaque de lentilles selon la revendication 1 ou 2, caractérisé en ce que la paroi de lentille (4) est formée par deux surfaces de lentille (4a, 4b) qui sont au moins en partie adjacentes l'une à l'autre.
- Système optique de plaque de lentilles selon la revendication 1, 2 ou 3, caractérisé en ce que la cavité principale (5) destinée à recevoir la LED (2) est formée par deux surfaces de lentille (4a, 5a) adjacentes l'une à l'autre.
- Système optique de plaque de lentilles selon au moins une des revendications 1 à 4, caractérisé en ce que la cavité secondaire (6) est formée par deux surfaces de lentille (4b, 6a) adjacentes l'une à l'autre.
- Système optique de plaque de lentilles selon au moins une des revendications 1 à 5, caractérisé en ce que la surface de lentille avant (8a), tournée vers la calotte de lentille (7), de la nervure de guidage de lumière (8) et la surface réfléchissante (8b) arrière de celle-ci sont adjacentes l'une à l'autre en formant un angle aigu.
- Système optique de plaque de lentilles selon au moins une des revendications 1 à 6, caractérisé en ce que des systèmes optiques (10) conformes à l'invention sont disposés dans un agencement régulier ou irrégulier et avec la même orientation ou des orientations différentes, à l'intérieur de la plaque de lentilles (9).
- Système optique de plaque de lentilles selon au moins une des revendications 1 à 7, caractérisé en ce que des systèmes optiques (10) conformes à l'invention sont disposés en étant mélangés avec d'autres systèmes optiques, dans un agencement régulier ou irrégulier quelconque à l'intérieur de la plaque de lentilles (9).
- Système optique de plaque de lentilles selon au moins une des revendications 1 à 8, caractérisé en ce que plusieurs LEDs (2) sont disposées sous un système optique conforme à l'invention.
- Système optique de plaque de lentilles selon au moins une des revendications 1 à 9, caractérisé en ce que la carte de circuit imprimé (1) ou ses LEDs (2) peuvent occuper des positions différentes par rapport à la plaque de lentilles (9) et que de ce fait, la caractéristique de la répartition de lumière peut être modifiée.
- Système optique de plaque de lentilles selon au moins une des revendications 1 à 10, caractérisé en ce que pour la fabrication économique de la plaque de lentilles (9), dans un outil de moulage par injection, les inclinaisons de toutes les surfaces ne forment pas de contre-dépouilles empêchant la démoulage direct.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14162432.0A EP2924345B1 (fr) | 2014-03-28 | 2014-03-28 | Luminaires avec distribution de lumière dissymétrique |
ES14162432.0T ES2691796T3 (es) | 2014-03-28 | 2014-03-28 | Luminarias con radiación luminosa asimétrica |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14162432.0A EP2924345B1 (fr) | 2014-03-28 | 2014-03-28 | Luminaires avec distribution de lumière dissymétrique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2924345A1 EP2924345A1 (fr) | 2015-09-30 |
EP2924345B1 true EP2924345B1 (fr) | 2018-07-18 |
Family
ID=50542791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14162432.0A Not-in-force EP2924345B1 (fr) | 2014-03-28 | 2014-03-28 | Luminaires avec distribution de lumière dissymétrique |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2924345B1 (fr) |
ES (1) | ES2691796T3 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190110016A (ko) | 2017-01-25 | 2019-09-27 | 레딜 오와이 | 광 분포를 변경하기 위한 광학 장치 |
US10274159B2 (en) | 2017-07-07 | 2019-04-30 | RAB Lighting Inc. | Lenses and methods for directing light toward a side of a luminaire |
DE102018103547A1 (de) * | 2018-02-16 | 2019-08-22 | Siteco Beleuchtungstechnik Gmbh | Leuchte |
DE202019100380U1 (de) * | 2019-01-24 | 2020-04-27 | Zumtobel Lighting Gmbh | Anordnung zur Lichtabgabe mit veränderbarer Lichtabstrahlcharakteristik |
EP4121690A1 (fr) | 2020-03-19 | 2023-01-25 | Schreder Sa | Dispositif électroluminescent à catégorie d'éclat adaptable |
NL2025168B1 (en) * | 2020-03-19 | 2021-10-20 | Schreder Sa | Light emitting device with adaptable glare class |
US11869358B2 (en) | 2021-10-29 | 2024-01-09 | Nortak Software Ltd. | System and method for warning of a presence of a mobile target |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101699148A (zh) | 2009-10-21 | 2010-04-28 | 苏州中泽光电科技有限公司 | 一种led路灯用偏心透镜 |
CN201764411U (zh) | 2010-07-01 | 2011-03-16 | 雷笛克光学股份有限公司 | 偏光式路灯光学透镜 |
CN102109132B (zh) * | 2010-12-30 | 2013-11-13 | 北京朗波尔光电股份有限公司 | 一种应用于低位照明的led灯具 |
US9140430B2 (en) * | 2011-02-28 | 2015-09-22 | Cooper Technologies Company | Method and system for managing light from a light emitting diode |
CN102102851A (zh) | 2011-03-24 | 2011-06-22 | 山东旭光太阳能光电有限公司 | 适用于功率型led路灯的偏光透镜 |
US20120307495A1 (en) * | 2011-06-06 | 2012-12-06 | Leotek Electronics Corporation | Optical lens and optical lens plate |
EP2834556B1 (fr) * | 2012-04-06 | 2017-08-02 | Cree, Inc. | Système optique à réseau de del multilentilles |
CN103471033B (zh) | 2013-08-23 | 2015-06-10 | 中微光电子(潍坊)有限公司 | 一种led透镜及其透镜模组 |
-
2014
- 2014-03-28 ES ES14162432.0T patent/ES2691796T3/es active Active
- 2014-03-28 EP EP14162432.0A patent/EP2924345B1/fr not_active Not-in-force
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
EP2924345A1 (fr) | 2015-09-30 |
ES2691796T3 (es) | 2018-11-28 |
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