DE20113933U1 - Light element - Google Patents
Light elementInfo
- Publication number
- DE20113933U1 DE20113933U1 DE20113933U DE20113933U DE20113933U1 DE 20113933 U1 DE20113933 U1 DE 20113933U1 DE 20113933 U DE20113933 U DE 20113933U DE 20113933 U DE20113933 U DE 20113933U DE 20113933 U1 DE20113933 U1 DE 20113933U1
- Authority
- DE
- Germany
- Prior art keywords
- light element
- fresnel lens
- element according
- layer
- glass
- 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.)
- Expired - Lifetime
Links
- 239000010410 layer Substances 0.000 claims description 23
- 239000011521 glass Substances 0.000 claims description 17
- 239000004033 plastic Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000005336 safety glass Substances 0.000 claims description 2
- 239000002985 plastic film Substances 0.000 claims 1
- 229920006255 plastic film Polymers 0.000 claims 1
- 239000002131 composite material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
- F24S23/31—Arrangements for concentrating solar-rays for solar heat collectors with lenses having discontinuous faces, e.g. Fresnel lenses
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
Description
Klaus-Michael Koch Otterkring 10 83253 Rimsting KOM0108 01GDE-2/Fi 21. August 2001Klaus-Michael Koch Otterkring 10 83253 Rimsting KOM0108 01GDE-2/Fi August 21, 2001
Manfred Heeg Oberfeld 21 82319 StarnbergManfred Heeg Oberfeld 21 82319 Starnberg
Die Erfindung betrifft ein Lichtelement gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a light element according to the preamble of claim 1.
Ein gattungsgemäßes Lichtelement ist aus der WO 00/20805 bekannt. Bei diesem Lichtelement wird eine Fresnellinse, beabstandet hinter einer lichtdurchlässigen Glasschicht, angeordnet. A generic light element is known from WO 00/20805. In this light element, a Fresnel lens is arranged at a distance behind a translucent glass layer.
Das Problem bei derartigen Anordnungen besteht darin, dass Fresnellinsen, die aus Kunststoff bestehen, zwar hoch präzise sind und damit einen hohen Wirkungsgrad haben, jedoch auf Grund des verwendeten Kunststoffmaterials instabil sind. Ferner sind je nach Art des Kunststoffmaterials die aus diesen gefertigten Fresnellinsen UV-empfindlich und trüben sich damit nach relativ kurzer Betriebsdauer ein. Andere Kunststoffarten sind weniger UV-empfindlich, erfüllen in aller Regel die Anforderungen an Brandschutzklassen, insbesondere der Brandschutzklasse DIN 4102 Bl, nicht.The problem with such arrangements is that although Fresnel lenses made of plastic are highly precise and therefore highly effective, they are unstable due to the plastic material used. Furthermore, depending on the type of plastic material, the Fresnel lenses made from these are sensitive to UV and thus become cloudy after a relatively short period of use. Other types of plastic are less sensitive to UV and generally do not meet the requirements of fire protection classes, in particular fire protection class DIN 4102 Bl.
Wird die Fresnellinse aus Glas gefertigt, ist sie zwar stabil und in der Regel UV-unempfindlich, jedoch ist die Fertigungsqualität deutlich geringer, sodass der Wirkungsgrad dieser Fresnellinsen niedriger ist.If the Fresnel lens is made of glass, it is stable and usually insensitive to UV rays, but the manufacturing quality is significantly lower, so that the efficiency of these Fresnel lenses is lower.
Es ist daher Aufgabe der vorliegenden Erfindung, ein Lichtelement der im Oberbegriff des Anspruchs 1 angegebenen Art zu schaffen, das es ermöglicht, die Vorteile von aus Glas und Kunststoff bestehenden Fresnellinsen miteinander zu kombinieren .It is therefore an object of the present invention to provide a light element of the type specified in the preamble of claim 1, which makes it possible to combine the advantages of Fresnel lenses made of glass and plastic.
Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruches 1.This problem is solved by the features of claim 1.
Dadurch, dass bei dem erfindungsgemäßen Lichtelement die Glasschicht als Trägerschicht ausgebildet ist, auf der direkt die aus Kunststoff bestehende Fresnellinse aufgebracht ist, ergibt sich eine Verbundlinse, die einerseits auf Grund der verwendeten Glasschicht stabil und Beschädigungsunempfindlich ist und dabei auf Grund der aus Kunststoff verwendeten Fresnellinsenschicht eine hochpräzise Ausbildung der Verbundlinse möglich macht, die überdies UV-unempfindlich ist. Ferner erfüllt das erfindungsgemäße Lichtelement problemlos die Anforderungen an Brandschutzklassen, insbesondere die Brandschutzklasse DIN 4102 Bl.Because the glass layer in the light element according to the invention is designed as a carrier layer on which the plastic Fresnel lens is applied directly, the result is a composite lens that is stable and resistant to damage on the one hand due to the glass layer used and, on the other hand, enables a highly precise formation of the composite lens due to the plastic Fresnel lens layer used, which is also UV-resistant. Furthermore, the light element according to the invention easily meets the requirements for fire protection classes, in particular the fire protection class DIN 4102 Bl.
Die Unteransprüche haben vorteilhafte Weiterbildungen der Erfindung zum Inhalt.The subclaims contain advantageous developments of the invention.
Die Kunststoff-Fresnellinse des erfindungsgemäßen Lichtelementes ist vorzugsweise als dünne Kunststoffschicht ausgebildet, deren Dicke bevorzugter Weise in einem Bereich von 1 bis 5 mm liegt.The plastic Fresnel lens of the light element according to the invention is preferably designed as a thin plastic layer, the thickness of which is preferably in a range of 1 to 5 mm.
Die Kunststoffschicht kann auf die Trägerschicht auflaminiert oder aufgeklebt werden, wozu vorzugsweise eine Verbindungsschicht, beispielsweise in Form eines Klebers, verwendet wird, der die unterschiedlichen Materialkonstanten, insbesondere den Ausdehnungskoeffizienten der Trägerschicht und der Fresnellinse ausgleicht.The plastic layer can be laminated or glued onto the carrier layer, for which purpose a connecting layer, for example in the form of an adhesive, is preferably used, which compensates for the different material constants, in particular the expansion coefficient of the carrier layer and the Fresnel lens.
Als Trägerschicht wird bei einer besonders bevorzugten Ausführungsform ein Einscheiben-Sicherheitsglas verwendet. Grundsätzlich sind jedoch andere Glasarten, wie Weißglas möglich.In a particularly preferred embodiment, single-pane safety glass is used as the carrier layer. However, other types of glass, such as white glass, are generally possible.
Die Fresnellinse kann beispielsweise aus Polyacryl oder Polycarbonat bestehen.The Fresnel lens can be made of polyacrylic or polycarbonate, for example.
Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus nachfolgender Beschreibung des Ausführungsbeispieles anhand der Zeichnung.Further details, features and advantages of the invention will become apparent from the following description of the embodiment with reference to the drawing.
Die einzige Figur der Zeichnung zeigt eine mögliche Ausführungsform eines erfindungsgemäßen Lichtelementes 1. Das Lichtelement 1 weist eine aus Glas bestehende TrägerschichtThe only figure of the drawing shows a possible embodiment of a light element 1 according to the invention. The light element 1 has a carrier layer made of glass
2 auf, auf der eine Kunststoff-Fresnellinse 3 unmittelbar aufgebracht ist.2, onto which a plastic Fresnel lens 3 is directly applied.
Bei der dargestellten Ausführungsform ist die Fresnellinse 3 mittels einer Kleberschicht 4 auf der als Trägerschicht wirkenden Glasscheibe 2 befestigt, wobei die Kleberschicht 4 dazu in der Lage ist, die unterschiedlichen Materialkonstanten des Glases und des Kunststoffmateriales der FresnellinseIn the embodiment shown, the Fresnel lens 3 is attached to the glass pane 2 acting as a carrier layer by means of an adhesive layer 4, wherein the adhesive layer 4 is able to compensate for the different material constants of the glass and the plastic material of the Fresnel lens.
3 auszugleichen.3 to balance.
Es entsteht somit eine Verbundlinse, die einerseits auf Grund des verwendeten Kunststoffmateriales für die Fresnellinse 3 hoch präzise ist und damit einen sehr hohen Wirkungsgrad hat und andererseits auf Grund der aus Glas bestehenden Trägerschicht 2 insgesamt stabil und beschädigungsunempfindlich ist. Weiterhin ist die Verbundlinse entsprechend der dargestellten Ausführungsform des erfindungsgemäßen Lichtelements 1 UV-unempfindlich und erfüllt zumindestens die meisten Anforderungen an die unterschiedlichen Brandschutzklassen, insbesondere die Brandschutzklasse DIN 4102 Bl.This creates a composite lens which, on the one hand, is highly precise due to the plastic material used for the Fresnel lens 3 and thus has a very high level of efficiency, and on the other hand, is stable and resistant to damage due to the carrier layer 2 made of glass. Furthermore, the composite lens is UV-resistant in accordance with the illustrated embodiment of the light element 1 according to the invention and meets at least most of the requirements of the various fire protection classes, in particular the fire protection class DIN 4102 Bl.
Zur Verdeutlichung der Wirkungsweise des erfindungsgemäßen Lichtelementes 1 sind zwei Licht- bzw. Sonnenstrahlen S dar-To illustrate the mode of operation of the light element 1 according to the invention, two light or sun rays S are shown.
• ··
t ·t ·
gestellt, die durch die Fresnellinse 3, z. B. auf ein Photovoltaikelement 5 oder einen thermischen Kollektor, z. B. Vakuumrohre, fokussiert werden.which are focused by the Fresnel lens 3, e.g. onto a photovoltaic element 5 or a thermal collector, e.g. vacuum tubes.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20113933U DE20113933U1 (en) | 2001-08-23 | 2001-08-23 | Light element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20113933U DE20113933U1 (en) | 2001-08-23 | 2001-08-23 | Light element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE20113933U1 true DE20113933U1 (en) | 2001-11-15 |
Family
ID=7960834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20113933U Expired - Lifetime DE20113933U1 (en) | 2001-08-23 | 2001-08-23 | Light element |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE20113933U1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3045203C2 (en) | 1979-11-30 | 1983-02-24 | Kureha Kagaku Kogyo K.K., Tokyo | Absorbent synthetic resin Fresnel lens for infrared detector |
| WO2000020805A1 (en) | 1998-10-05 | 2000-04-13 | Powerpulse Holding Ag | Light element having a translucent surface |
| DE19942478A1 (en) | 1998-09-10 | 2000-05-18 | Thomson Consumer Electronics | Holography projection screen for projection type video display device of television image receiver, consists of hologram to manage diffusion of optical energy coming out through back side of Fresnel lens |
| US6206550B1 (en) | 1994-10-18 | 2001-03-27 | Mitsubishi Rayon Company Ltd. | Active energy ray-curable composition and lens sheet |
-
2001
- 2001-08-23 DE DE20113933U patent/DE20113933U1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3045203C2 (en) | 1979-11-30 | 1983-02-24 | Kureha Kagaku Kogyo K.K., Tokyo | Absorbent synthetic resin Fresnel lens for infrared detector |
| US6206550B1 (en) | 1994-10-18 | 2001-03-27 | Mitsubishi Rayon Company Ltd. | Active energy ray-curable composition and lens sheet |
| DE19942478A1 (en) | 1998-09-10 | 2000-05-18 | Thomson Consumer Electronics | Holography projection screen for projection type video display device of television image receiver, consists of hologram to manage diffusion of optical energy coming out through back side of Fresnel lens |
| WO2000020805A1 (en) | 1998-10-05 | 2000-04-13 | Powerpulse Holding Ag | Light element having a translucent surface |
Non-Patent Citations (1)
| Title |
|---|
| SCHREYER,G.: Kunststoffe in der optischen Industrie. In: Umschau, H. 9, 1962, S.269-272 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 20011220 |
|
| R163 | Identified publications notified |
Effective date: 20020715 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20050314 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20070924 |
|
| R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20091112 |
|
| R071 | Expiry of right | ||
| R071 | Expiry of right |