EP2924345A1 - Luminaires avec distribution de lumière dissymétrique - Google Patents
Luminaires avec distribution de lumière dissymétrique Download PDFInfo
- Publication number
- EP2924345A1 EP2924345A1 EP14162432.0A EP14162432A EP2924345A1 EP 2924345 A1 EP2924345 A1 EP 2924345A1 EP 14162432 A EP14162432 A EP 14162432A EP 2924345 A1 EP2924345 A1 EP 2924345A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lens
- light
- led
- lens plate
- optics
- 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.)
- Granted
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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
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- 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 luminaires with asymmetrical light distribution according to the preamble of claim 1.
- 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, optics can be developed which are suitable or easily adaptable in their essential parameters for a variety of LED types on the market. 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 CN 103471033A describes in particular in 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.
- 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 inventively achieved in that the optics around the LED rests with its back on the circuit board and having a cavity which is divided by a laterally arranged to the LED lens land in a main cavity for receiving the LED and an adjacent Maukavtician, and at the Outside a convex lens cap is formed with integrally formed Lichtlenkungsrippe.
- the radiated light of the LED is split and steered onto the roadway via two completely independent different paths, one light path leading directly through the lens cap, the other through the lens land, the subcavity and the light steering rib.
- the complete independence of the two light paths allows for individual light control and therefore the best possible coordination without compromise.
- 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)
- Led Device Packages (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
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 true EP2924345A1 (fr) | 2015-09-30 |
EP2924345B1 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) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10274159B2 (en) | 2017-07-07 | 2019-04-30 | RAB Lighting Inc. | Lenses and methods for directing light toward a side of a luminaire |
EP3527880A1 (fr) * | 2018-02-16 | 2019-08-21 | Siteco Beleuchtungstechnik GmbH | Luminaire |
US10429035B2 (en) | 2017-01-25 | 2019-10-01 | Ledil Oy | Optical device for modifying light distribution |
DE202019100380U1 (de) * | 2019-01-24 | 2020-04-27 | Zumtobel Lighting Gmbh | Anordnung zur Lichtabgabe mit veränderbarer Lichtabstrahlcharakteristik |
WO2021186058A1 (fr) * | 2020-03-19 | 2021-09-23 | Schreder S.A. | 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 |
Citations (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 |
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 |
CN102109132A (zh) * | 2010-12-30 | 2011-06-29 | 北京朗波尔光电股份有限公司 | 一种应用于低位照明的led光源组件及led灯具 |
US20120307495A1 (en) * | 2011-06-06 | 2012-12-06 | Leotek Electronics Corporation | Optical lens and optical lens plate |
WO2013152199A1 (fr) * | 2012-04-06 | 2013-10-10 | Cree, Inc. | Système optique à réseau de del multilentilles |
CN103471033A (zh) | 2013-08-23 | 2013-12-25 | 中微光电子(潍坊)有限公司 | 一种led透镜及其透镜模组 |
US20140085905A1 (en) * | 2011-02-28 | 2014-03-27 | Kevin Charles Broughton | Method and System for Managing Light from a Light Emitting Diode |
-
2014
- 2014-03-28 EP EP14162432.0A patent/EP2924345B1/fr not_active Not-in-force
- 2014-03-28 ES ES14162432.0T patent/ES2691796T3/es active Active
Patent Citations (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 |
CN102109132A (zh) * | 2010-12-30 | 2011-06-29 | 北京朗波尔光电股份有限公司 | 一种应用于低位照明的led光源组件及led灯具 |
US20140085905A1 (en) * | 2011-02-28 | 2014-03-27 | Kevin Charles Broughton | 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 |
WO2013152199A1 (fr) * | 2012-04-06 | 2013-10-10 | Cree, Inc. | Système optique à réseau de del multilentilles |
CN103471033A (zh) | 2013-08-23 | 2013-12-25 | 中微光电子(潍坊)有限公司 | 一种led透镜及其透镜模组 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10429035B2 (en) | 2017-01-25 | 2019-10-01 | Ledil Oy | Optical device for modifying light distribution |
US10274159B2 (en) | 2017-07-07 | 2019-04-30 | RAB Lighting Inc. | Lenses and methods for directing light toward a side of a luminaire |
EP3527880A1 (fr) * | 2018-02-16 | 2019-08-21 | Siteco Beleuchtungstechnik GmbH | Luminaire |
DE202019100380U1 (de) * | 2019-01-24 | 2020-04-27 | Zumtobel Lighting Gmbh | Anordnung zur Lichtabgabe mit veränderbarer Lichtabstrahlcharakteristik |
AT18042U1 (de) * | 2019-01-24 | 2023-11-15 | Zumtobel Lighting Gmbh At | Anordnung zur Lichtabgabe mit veränderbarer Lichtabstrahlcharakteristik |
WO2021186058A1 (fr) * | 2020-03-19 | 2021-09-23 | Schreder S.A. | Dispositif électroluminescent à catégorie d'éclat adaptable |
NL2025168B1 (en) * | 2020-03-19 | 2021-10-20 | Schreder Sa | Light emitting device with adaptable glare class |
US11821620B2 (en) | 2020-03-19 | 2023-11-21 | Schreder S.A. | 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 |
Also Published As
Publication number | Publication date |
---|---|
EP2924345B1 (fr) | 2018-07-18 |
ES2691796T3 (es) | 2018-11-28 |
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