EP2102545A1 - Transparente platte mit einer oberflächenstruktur zum weitgehend blendfreiem auskoppeln des von einer leuchte erzeugten lichts - Google Patents
Transparente platte mit einer oberflächenstruktur zum weitgehend blendfreiem auskoppeln des von einer leuchte erzeugten lichtsInfo
- Publication number
- EP2102545A1 EP2102545A1 EP07818199A EP07818199A EP2102545A1 EP 2102545 A1 EP2102545 A1 EP 2102545A1 EP 07818199 A EP07818199 A EP 07818199A EP 07818199 A EP07818199 A EP 07818199A EP 2102545 A1 EP2102545 A1 EP 2102545A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- surface structure
- transparent plate
- pyramids
- lamp
- grooves
- 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
Links
- 244000144992 flock Species 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
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
- F21V5/02—Refractors for light sources of prismatic shape
Definitions
- a transparent plate having a surface structure formed for largely glare-free decoupling of the light generated by a luminaire, wherein the plate for forming the surface structure on at least one side two offset by 90 ° flocks of straight, parallel V-shaped grooves, wherein the configurable parameters, such as dimensions of the grooves, their distances within a family and the offset angles, are selected so that between the grooves remain exclusively protruding pyramids of the same height with a square base.
- Transparent plates of the type described above have the disadvantage that the light output is not uniform in all directions. This is due to the square basic shape of the pyramids, which emit the light in four preferred directions. The latter has the consequence that the viewer of a lamp provided with such a plate, depending on whether he the lamp of one of
- the object of the invention is to improve the glare-reducing effect of such a panel in the sense that the viewer of a luminaire provided with such a panel experiences less pronounced brightness differences at different viewing positions.
- the object is achieved by a transparent plate having the features of claim 1.
- the core of the teaching of the invention is that not only two flocks of substantially V-shaped grooves are provided to realize the surface structure in the plate, but more than two crowds. Care must be taken to ensure that the configurable parameters, such as the dimensions of the grooves, their distances within a family and the offset angles of the groove rows are selected so that between the grooves exclusively pyramids or
- the transparent plate may have a positive or negative surface structure, ie the pyramids or truncated pyramids are at a positive training from the plate or surface level before or these are directed at a negative education of the plate plane inwards.
- a "pyramid” is a polyhedron bounded by a base in the form of a polygon of any number of vertices and at least three triangles forming the side surfaces, the triangles being in one point ( In the context of this invention, however, the strictly geometric definition is not exclusive, but the advantageous lighting effects are also achievable if the side surfaces of the pyramids are flat, slightly curved or curved or faceted or formed in a similar manner.
- a "truncated pyramid” is created by cutting off a pyramid parallel to the base area of a smaller, similar to the original pyramid pyramid.
- the teachings according to the invention make it possible to arrange the pyramids or truncated pyramids within the surface structure in such a way that at least those adjacent pyramids or truncated pyramids which have a common base edge have a different orientation. This in turn leads to an increase in the number of preferred directions with which the surface structure radiates the light emitted by the lamp with scattering effect. An increase in the number of preferred directions has the consequence that the desired Entblendungsrial is improved.
- a first concrete embodiment of the invention may consist in that the transparent plate for forming the surface structure has three sets of grooves offset by an angle of 60 ° in each case.
- the bases of the pyramids or truncated pyramids in this case are equilateral triangles, with the result that the surface structure has a total of six preferred directions in the emission of the light generated by the lamp.
- a further variant may consist in that the transparent plate has four groups of grooves offset by an angle of 45 ° to form the surface structure.
- the pyramids or truncated pyramids have a footprint forming an isosceles triangle.
- Such a surface structure then already has eight preferred directions.
- the invention further relates to a luminaire with a lamp and a reflector.
- the luminaire according to the invention should be characterized in that a transparent plate having a surface structure which is distinguished by the features described above is applied to the opposite side of the reflector, as seen from the lamp. The arrangement should be such that the surface structure is located on the side of the plate facing away from the lamp.
- Fig. 1 shows a known lamp with a transparent plate with a
- Fig. 2 is a view II against the shown in Fig. 1 known transparent
- FIG. 3 shows a partial section HI-III through the known plate shown in Figure 2;
- FIG. 4 is a view similar to view II in FIG. 1 of a transparent plate having a pyramid-shaped surface structure according to a first embodiment of the invention
- Fig. 5 is a partial section V-V through the transparent plate shown in Fig. 4;
- Fig. 6 is a view like the view II in Fig. 1 on a transparent plate having a pyramid-shaped surface structure according to a second embodiment of the invention
- Fig. 7 is a partial section VII-VII through the transparent shown in Fig. 6
- Fig. 2 shows a transparent plate with a surface structure which is incorporated in a luminaire 11 of known construction in order to decouple the light generated by the luminaire as glare-free as possible.
- the luminaire 11 has a fluorescent lamp 12 and a reflector 13 surrounding it.
- a transparent plate is arranged with an outwardly or in an alternative embodiment inwardly directed surface structure.
- the surface structure of the transparent plate 1 causes both directly incident beams 14, 15 as well as to the reflector 13 reflected beams 16a, 16b are scattered down so that on both sides of the lamp 11 largely shaded defibrillation areas 17, 18 arise.
- Even very flat incident light rays such as the reflected light beam 16b can not - as indicated by the fictitious beam 16c - fall into the deblading region 18, but are scattered downwards, as indicated by the arrow bunch 16d.
- the known surface structure is apparent from FIGS. 2 and 3.
- the transparent plate 1 has for this purpose two sets of parallel V-shaped grooves 2, 3 offset by 90 °, between which pyramids remain, of which only four are shown and two of which are designated by the reference numerals 5, 6.
- the arrows provided on the pyramids indicate that the radiation of the light from the prisms takes place in four preferred directions.
- a radiation of light is also in lying between the preferred directions directions, but with different light intensity. This difference is undesirable and is reduced in the embodiments of the transparent plates according to the invention described below.
- the first variant of the transparent plate 21 according to the invention shown in FIGS. 4 and 5, has three groups of parallel substantially V-shaped grooves 22, 23 and 24, each offset by 60 ° in order to realize the surface structure.
- the dimensions or the shape of the grooves and their distances within a crowd are such that remain between the grooves only pyramids of the same height.
- the V-shaped grooves are formed by side surfaces of the pyramids, which may be slightly curved or otherwise configured in a planar manner or in other embodiments, so that the side surfaces of different adjacent pyramids approach the V-shape.
- the pyramids have a base in the form of an equilateral triangle. For the sake of simplicity, only six pyramids have been shaded, of which only two are identified by reference numerals 25 and 26.
- the pyramids having a common edge of the base area each have a different orientation.
- the pyramids emit the light irradiated into the transparent plate 21 in six different preferred directions.
- the preferred directions are indicated by arrows emanating from the pyramids.
- the greater number of preferred directions leads to a reduction of brightness differences at different viewing angles of the transparent plate 21 with this surface structure.
- FIGS. 6 and 7 second variant of the transparent plate 31 according to the invention has to implement the surface structure four mutually offset by 45 ° flocks of parallel substantially V-shaped grooves 32, 33, 34, 35. Between the grooves remain pyramids of the same height. For the sake of simplicity, only eight are in the middle of the transparent plate 31 here Shades have been provided with shading, only four of these pyramids being designated by reference numerals 36, 37, 38 and 39. It should be indicated by the arrows emanating from the pyramids that in this case the light irradiated into the transparent plate 31 is emitted in eight different preferred directions. In this way, even further glare is ensured, to be understood in the sense that brightness differences are further reduced from different viewing angles.
- Transparent plates having a surface structure of the kind shown in Figs. 4 to 7 can be produced by conventional manufacturing methods by injection molding by means of a correspondingly formed mold or by hot stamping by means of a punch or by a roll mold for use in a continuous process.
- the pyramids of the surface structure are small and usually have dimensions that are less than lmm.
- the prism structure is therefore also called a micro-surface structure.
- the embodiments described in connection with FIGS. 1 to 6 for the transparent plate according to the invention have a surface structure formed by pyramids.
- the spacings of the grooves within a coulter during milling of the tool plate 43 must be made larger, and indeed so large, that flat spacing regions remain between the milled-out grooves.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
- Laminated Bodies (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006054379A DE102006054379A1 (de) | 2006-11-17 | 2006-11-17 | Transparente Platte mit einer Oberflächenstruktur zum weitgehend blendfreiem Auskoppeln des von einer Leuchte erzeugten Lichts |
| PCT/EP2007/008093 WO2008058585A1 (de) | 2006-11-17 | 2007-09-17 | Transparente platte mit einer oberflächenstruktur zum weitgehend blendfreiem auskoppeln des von einer leuchte erzeugten lichts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2102545A1 true EP2102545A1 (de) | 2009-09-23 |
| EP2102545B1 EP2102545B1 (de) | 2010-11-17 |
Family
ID=38740228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07818199A Not-in-force EP2102545B1 (de) | 2006-11-17 | 2007-09-17 | Transparente platte mit einer oberflächenstruktur zum weitgehend blendfreiem auskoppeln des von einer leuchte erzeugten lichts |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2102545B1 (de) |
| AT (1) | ATE488730T1 (de) |
| DE (2) | DE102006054379A1 (de) |
| WO (1) | WO2008058585A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202010002744U1 (de) | 2010-02-24 | 2010-07-08 | Bwf Kunststoffe Gmbh & Co. Kg | Vorrichtung zum blendreduzierten Auskoppeln von Licht |
| JP6038116B2 (ja) | 2011-03-31 | 2016-12-07 | フィリップス ライティング ホールディング ビー ヴィ | モジュール式パネルシステムのパネル支持要素内又はその上に取り付けられる固体照明ストリップ |
| WO2012168839A1 (en) | 2011-06-09 | 2012-12-13 | Koninklijke Philips Electronics N.V. | Lighting strip |
| JP6198724B2 (ja) | 2011-06-09 | 2017-09-20 | フィリップス ライティング ホールディング ビー ヴィ | 照明ストリップ |
| DE102011103981A1 (de) * | 2011-06-10 | 2012-12-13 | Siteco Beleuchtungstechnik Gmbh | Prismenplatte |
| KR20130047334A (ko) * | 2011-10-31 | 2013-05-08 | 엘지이노텍 주식회사 | 조명 부재 및 이를 포함하는 조명 장치 |
| ITBS20120051A1 (it) * | 2012-04-04 | 2013-10-05 | Targetti Sankey Spa | Apparecchio di illuminazione |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3001062A (en) * | 1955-09-15 | 1961-09-19 | Westinghouse Electric Corp | Light refractor |
| DE1201787B (de) * | 1958-07-30 | 1965-09-30 | Corning Glass Works | Lichtdurchlaessige Platte |
| US3829680A (en) * | 1972-11-24 | 1974-08-13 | Carroll J & Sons | Lighting panel |
| DE2520429C3 (de) * | 1975-05-07 | 1978-05-11 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Lichtdurchlässige Abdeckung für Leuchten |
| US4064433A (en) * | 1976-06-30 | 1977-12-20 | K-S-H, Inc. | Prismatic lighting panel |
-
2006
- 2006-11-17 DE DE102006054379A patent/DE102006054379A1/de not_active Withdrawn
-
2007
- 2007-09-17 AT AT07818199T patent/ATE488730T1/de active
- 2007-09-17 EP EP07818199A patent/EP2102545B1/de not_active Not-in-force
- 2007-09-17 DE DE502007005711T patent/DE502007005711D1/de active Active
- 2007-09-17 WO PCT/EP2007/008093 patent/WO2008058585A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008058585A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502007005711D1 (de) | 2010-12-30 |
| DE102006054379A1 (de) | 2008-05-21 |
| ATE488730T1 (de) | 2010-12-15 |
| EP2102545B1 (de) | 2010-11-17 |
| WO2008058585A1 (de) | 2008-05-22 |
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