EP1241399A2 - Optisches System für Stufenlinsenscheinwerfer - Google Patents
Optisches System für Stufenlinsenscheinwerfer Download PDFInfo
- Publication number
- EP1241399A2 EP1241399A2 EP02003626A EP02003626A EP1241399A2 EP 1241399 A2 EP1241399 A2 EP 1241399A2 EP 02003626 A EP02003626 A EP 02003626A EP 02003626 A EP02003626 A EP 02003626A EP 1241399 A2 EP1241399 A2 EP 1241399A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- optical system
- lens
- lamp
- light
- 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
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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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
-
- 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
- F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel 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
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
-
- 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
- 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
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
Definitions
- the invention relates to an optical system for stepped lens headlights with a ellipsoidal reflector, a lamp and at least one step lens.
- the parts relevant to lighting technology in conventional optical systems for Step lens headlights are lamp, step lens (Fresnel lens) and spherical Auxiliary reflector.
- the lamp filament is located essentially unchangeable in the center of the sphere of the spherical auxiliary reflector. Thereby part of the light emitted by the lamp is reflected back into it and supports the light emission in the front half space. This after light directed at the front is focused by the step lens.
- the degree of light beam depends on the distance between the step lens and the lamp. If the lamp filament is at the focal point of the stepped lens, it results the closest beam of light. This creates a quasi-parallel beam path, also called spot. By shortening the distance between the stepped lens and the lamp becomes the opening angle of the emerging Light beam steadily enlarged. This creates a divergent beam path, also called flood.
- a disadvantage of such headlights is the poor light yield in particular in the spot position, since there is only a relatively small solid angle range the lamp is captured by the step lens. It also has an effect disadvantageous from the fact that the light reflected by the spherical reflector a large part hits the lamp filament itself, is absorbed there and the Lamp filament additionally heated.
- the object of the invention is to provide an optical system for stepped lens headlights with an improved light efficiency especially in spot, but also in the flood position while maintaining the uniformity of the illuminance to be provided in the light field.
- the task is solved by an optical system for stepped lens headlights with an ellipsoidal reflector, a lamp and at least one Step lens, the distance between the step lens and reflector to the Distance between lamp and reflector according to the one to be set Opening angle of the light beam emerging from the headlight in one defined dependency.
- an ellipsoidal reflector with a large aperture is provided.
- the spot position is set by the lamp filament being in the reflector side Focus of the ellipsoid is located. That reflected by the reflector Light is almost completely at the focal point of the ellipsoid, which is remote from the reflector united.
- the lamp filament located in the focal point on the reflector side is shown in the focal point of the ellipsoid far from the reflector. The reflected light essentially does not hit the lamp filament.
- the focal point of the stepped lens coincides with the focal point of the ellipsoid.
- the light reflected by the reflector is almost entirely from the step lens captured and emitted to the front as a narrow spot light beam.
- the light output is therefore considerably larger than with a conventional stepped lens headlight.
- the opening angle of the light beam emerging from the step lens can be enlarged almost arbitrarily by the lamp position in relation to the Reflector on the one hand and the distance of the stepped lens to the reflector on the other is changed in a suitable manner. So that the good properties more conventional Step lens headlights in terms of the uniformity of the Illuminance must be maintained, these changes in distance through an appropriately chosen forced coupling.
- the ellipsoid reflector consists of a metallic or transparent material. To be favoured Glass and polymeric materials used. To make a reflective Surface becomes one of the two surfaces of the reflector with a System of thin layers. This advantageously makes them visible Radiation components are reflected and the invisible components, in particular the heat radiation, let through.
- a preferred embodiment of the invention is an optical system for Step lens headlight, the light reflecting surface of the reflector is structured to diffuse light and none, one or two surfaces of the Step lens are structured to scatter light.
- An alternative preferred embodiment of the invention is an optical one System for stepped lens headlights, with at least one of the surfaces the step lens is structured to scatter light and the light reflecting surface of the reflector is not structured to scatter light.
- the optical system in headlights intended for film, stage, studio and photography.
- Fig. 1 shows the optical system according to the invention for stepped lens headlights in the spot position.
- the optical system contains an ellipsoidal reflector (1), a lamp (2) and a step lens (3).
- the light beam (4) emerging from the headlight is indicated schematically.
- the distances (a) between the stepped lens (3) and reflector (1) and (b) between the lamp (2) and reflector (1) are shown.
- the spot position is set in such a way that the lamp filament (2) is in the focal point (F1) of the ellipsoid (1) on the reflector side.
- the light reflected by the reflector (1) is almost completely combined in the focal point (F2) of the ellipsoid (1) remote from the reflector.
- the focal point of the stepped lens (F3) coincides with the focal point of the ellipsoid (F2).
- the lamp filament (2) located in the focal point (F1) on the reflector side is actually imaged in the focal point (F2) of the ellipsoid (1) remote from the reflector.
- Fig. 2 shows the optical system according to the invention for step lens headlights in the flood position.
- the structure corresponds to the structure of an optical system explained in FIG. 1.
- the opening angle of the light bundle (4) emerging from the step lens (3) can be increased almost arbitrarily by the distance (b) between the lamp (2) and the reflector (1) and the distance (a) between the step lens (3 ) and the reflector (1) can be changed.
- the changes in distance are carried out by means of an appropriately selected forced coupling (not shown in FIGS. 1 and 2).
- the lamp (2) lies outside the focal point (F1) on the reflector side.
- the focal point of the stepped lens (F3) does not coincide with the focal point of the ellipsoid (F2) remote from the reflector.
Abstract
Description
Fig. 2 zeigt das erfindungsgemäße optische System für Stufenlinsenscheinwerfer in Flood-Stellung. Der Aufbau entspricht dem in Fig. 1 erläuterten Aufbau eines optischen Systems. Der Öffnungswinkel des aus der Stufenlinse (3) austretenden Lichtbündels (4) kann nahezu beliebig vergrößert werden, in dem der Abstand (b) zwischen der Lampe (2) und dem Reflektor (1) und der Abstand (a) zwischen der Stufenlinse (3) und dem Reflektor (1) verändert werden. Damit die Gleichmäßigkeit der Beleuchtungsstärke erhalten bleibt, erfolgen die Abstandsveränderungen durch eine zweckmäßig gewählte Zwangskoppelung (in Fig. 1 und Fig. 2 nicht dargestellt). Die Lampe (2) liegt außerhalb des reflektorseitigen Brennpunktes (F1). Der Brennpunkt der Stufenlinse (F3) fällt mit dem reflektorfernen Brennpunkt des Ellipsoids (F2) nicht zusammen.
Claims (7)
- Optisches System für Stufenlinsenscheinwerfer mit einem ellipsoiden Reflektor (1), einer Lampe (2) und mindestens einer Stufenlinse (3), wobei der Abstand (a) zwischen Stufenlinse (3) und Reflektor (1) zu dem Abstand (b) zwischen Lampe (2) und Reflektor (1) nach Maßgabe des einzustellenden Öffnungswinkels des aus dem Scheinwerfer austretenden Lichtbündels (4) in einer definierten Abhängigkeit steht.
- Optisches System für Stufenlinsenscheinwerfer nach Anspruch 1, wobei der Abstand (b) dadurch eingestellt wird, dass die Lampe (2) zum Scheitelpunkt des Reflektors (1) hin oder vom Scheitelpunkt des Reflektors (1) weg bewegt wird.
- Optisches System für Stufenlinsenscheinwerfer nach Anspruch 1 oder 2, wobei der Reflektor (1) aus einem metallischen oder transparenten Material besteht.
- Optisches System für Stufenlinsenscheinwerfer nach mindestens einem der Ansprüche 1 bis 3, wobei mindestens eine der beiden Oberflächen des Reflektors (1) mit einem System dünner Schichten versehen ist.
- Optisches System für Stufenlinsenscheinwerfer nach mindestens einem der Ansprüche 1 bis 4, wobei die lichtreflektierende Oberfläche des Reflektors (1) lichtstreuend strukturiert ist und keine, eine oder zwei Oberflächen der Stufenlinse (3) lichtstreuend strukturiert sind.
- Optisches System für Stufenlinsenscheinwerfer nach mindestens einem der Ansprüche 1 bis 4, wobei mindestens eine der Oberflächen der Stufenlinse (3) lichtstreuend strukturiert ist und die lichtreflektierende Oberfläche des Reflektors (1) nicht lichtstreuend strukturiert ist.
- Verwendung des optischen Systems nach mindestens einem der Ansprüche 1 bis 6 in Scheinwerfern für Film, Bühne, Studio und Fotografie.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10113385 | 2001-03-16 | ||
DE10113385A DE10113385C1 (de) | 2001-03-16 | 2001-03-16 | Stufenlinsenscheinwerfer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1241399A2 true EP1241399A2 (de) | 2002-09-18 |
EP1241399A3 EP1241399A3 (de) | 2005-04-13 |
EP1241399B1 EP1241399B1 (de) | 2008-05-28 |
Family
ID=7678153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02003626A Expired - Lifetime EP1241399B1 (de) | 2001-03-16 | 2002-02-16 | Optisches System für Stufenlinsenscheinwerfer |
Country Status (4)
Country | Link |
---|---|
US (1) | US6899451B2 (de) |
EP (1) | EP1241399B1 (de) |
JP (2) | JP2002324410A (de) |
DE (2) | DE10113385C1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1548358A1 (de) * | 2003-12-22 | 2005-06-29 | Schott AG | Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente |
EP1548355A2 (de) * | 2003-12-22 | 2005-06-29 | Schott AG | Stufenlinsenscheinwerfer |
DE10361121A1 (de) * | 2003-12-22 | 2005-07-21 | Schott Ag | Optische Anordnung mit Stufenlinse |
WO2006136378A1 (de) * | 2005-06-20 | 2006-12-28 | Cooper Crouse-Hinds Gmbh | Tragbare leuchte |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10202870A1 (de) * | 2002-01-11 | 2003-09-04 | Zeiss Carl Jena Gmbh | Beleuchtungseinrichtung für Mikroskope |
US6854865B2 (en) * | 2003-02-12 | 2005-02-15 | W. T. Storey, Inc. | Reflector for light emitting objects |
DE10318330B3 (de) * | 2003-04-19 | 2005-01-20 | Hensel Studiotechnik Gmbh & Co. Kg | Lichtverteilvorsatz für einen Stufenlinsenscheinwerfer |
US7483220B2 (en) * | 2003-12-22 | 2009-01-27 | Auer Lighting Gmbh | Optical arrangement with stepped lens |
DE102004014045A1 (de) * | 2003-12-22 | 2005-07-28 | Schott Ag | Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente |
DE10361116B4 (de) * | 2003-12-22 | 2010-06-17 | Auer Lighting Gmbh | Stufenlinsenscheinwerfer |
DE102004013962A1 (de) * | 2003-12-22 | 2005-07-21 | Schott Ag | Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente |
CN1914456A (zh) * | 2004-02-04 | 2007-02-14 | 日东电工株式会社 | 照明装置、使用该照明装置的光照射设备、以及用该设备制造光反应生成物片的方法 |
JP4149978B2 (ja) * | 2004-09-16 | 2008-09-17 | 株式会社東芝 | フレネルレンズおよび照明装置 |
DE102005029669A1 (de) | 2005-06-22 | 2007-01-11 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Scheinwerfer |
DE102005044237B4 (de) * | 2005-09-16 | 2012-05-03 | Auer Lighting Gmbh | Modularer Scheinwerfer |
US20080247024A1 (en) * | 2006-03-03 | 2008-10-09 | Robe Show Lighting S.R.O. | Optical system for a wash light |
EP1994329A1 (de) * | 2006-03-03 | 2008-11-26 | Robe Show Lighting S.R.O. | Optisches system |
US7967477B2 (en) * | 2007-09-06 | 2011-06-28 | Philips Lumileds Lighting Company Llc | Compact optical system and lenses for producing uniform collimated light |
US7589917B2 (en) * | 2007-10-25 | 2009-09-15 | Honeywell International Inc. | Collimating fresnel lens with diffuser appearance |
US20110058356A1 (en) | 2009-02-25 | 2011-03-10 | Black & Decker Inc. | Power tool with light emitting assembly |
US8317350B2 (en) | 2009-02-25 | 2012-11-27 | Black & Decker Inc. | Power tool with a light for illuminating a workpiece |
US8328381B2 (en) | 2009-02-25 | 2012-12-11 | Black & Decker Inc. | Light for a power tool and method of illuminating a workpiece |
DE202009011500U1 (de) | 2009-08-20 | 2010-12-30 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Optisches System für eine LED-Leuchte |
US9028088B2 (en) | 2010-09-30 | 2015-05-12 | Black & Decker Inc. | Lighted power tool |
US9328915B2 (en) | 2010-09-30 | 2016-05-03 | Black & Decker Inc. | Lighted power tool |
US9242355B2 (en) | 2012-04-17 | 2016-01-26 | Black & Decker Inc. | Illuminated power tool |
CN106979502A (zh) * | 2016-08-31 | 2017-07-25 | 厦门益光照明科技股份有限公司 | 一种正装或倒装透镜的led照明灯具 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3428800A (en) * | 1965-12-10 | 1969-02-18 | Sylvania Electric Prod | Spotlight lamp |
JPS6020924A (ja) * | 1983-07-14 | 1985-02-02 | Agency Of Ind Science & Technol | ビ−ズ状不溶性シクロデキストリンポリマ−の製法 |
DE3413310A1 (de) * | 1984-04-09 | 1985-10-17 | Dr.-Ing. Willing GmbH, 8604 Scheßlitz | Beleuchtungsscheinwerfer mit verstellbarem ausstrahlungswinkel |
DE3919643A1 (de) * | 1989-06-16 | 1991-01-03 | Reiche & Vogel Gmbh | Scheinwerfer, der in seiner helligkeit stufenlos regelbar ist |
US5544029A (en) * | 1993-11-12 | 1996-08-06 | Cunningham; David W. | Lighting fixture for theater, television and architectural applications |
EP0846913B1 (de) * | 1996-12-04 | 2004-07-07 | Dedo Weigert Film GmbH | Scheinwerfer mit veränderlichem Abstrahlwinkel |
US5904417A (en) * | 1997-08-04 | 1999-05-18 | Buhl Electric, Inc. | Light fixture with elliptical reflector and mechanical shutter dimmer |
US6123436A (en) * | 1997-08-05 | 2000-09-26 | Vari-Lite, Inc. | Optical device for modifying the angular and spatial distribution of illuminating energy |
JP3017195B1 (ja) * | 1998-12-10 | 2000-03-06 | スタンレー電気株式会社 | 灯 具 |
-
2001
- 2001-03-16 DE DE10113385A patent/DE10113385C1/de not_active Expired - Lifetime
-
2002
- 2002-02-16 EP EP02003626A patent/EP1241399B1/de not_active Expired - Lifetime
- 2002-02-16 DE DE50212306T patent/DE50212306D1/de not_active Expired - Lifetime
- 2002-03-11 JP JP2002064701A patent/JP2002324410A/ja active Pending
- 2002-03-13 US US10/096,887 patent/US6899451B2/en not_active Expired - Lifetime
-
2008
- 2008-07-16 JP JP2008184507A patent/JP4792486B2/ja not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1548358A1 (de) * | 2003-12-22 | 2005-06-29 | Schott AG | Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente |
EP1548355A2 (de) * | 2003-12-22 | 2005-06-29 | Schott AG | Stufenlinsenscheinwerfer |
DE10361121A1 (de) * | 2003-12-22 | 2005-07-21 | Schott Ag | Optische Anordnung mit Stufenlinse |
EP1548355B1 (de) * | 2003-12-22 | 2010-05-19 | Auer Lighting GmbH | Stufenlinsenscheinwerfer |
WO2006136378A1 (de) * | 2005-06-20 | 2006-12-28 | Cooper Crouse-Hinds Gmbh | Tragbare leuchte |
US8162503B2 (en) | 2005-06-20 | 2012-04-24 | Cooper Crouse-Hinds Gmbh | Portable lighting device |
Also Published As
Publication number | Publication date |
---|---|
DE50212306D1 (de) | 2008-07-10 |
DE10113385C1 (de) | 2002-08-29 |
JP4792486B2 (ja) | 2011-10-12 |
US6899451B2 (en) | 2005-05-31 |
EP1241399B1 (de) | 2008-05-28 |
JP2002324410A (ja) | 2002-11-08 |
EP1241399A3 (de) | 2005-04-13 |
US20030063466A1 (en) | 2003-04-03 |
JP2008288215A (ja) | 2008-11-27 |
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