EP1241399B1 - Optisches System für Stufenlinsenscheinwerfer - Google Patents

Optisches System für Stufenlinsenscheinwerfer Download PDF

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Publication number
EP1241399B1
EP1241399B1 EP02003626A EP02003626A EP1241399B1 EP 1241399 B1 EP1241399 B1 EP 1241399B1 EP 02003626 A EP02003626 A EP 02003626A EP 02003626 A EP02003626 A EP 02003626A EP 1241399 B1 EP1241399 B1 EP 1241399B1
Authority
EP
European Patent Office
Prior art keywords
reflector
light
focal point
optical system
stepped lens
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
Application number
EP02003626A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1241399A2 (de
EP1241399A3 (de
Inventor
Rüdiger Kittelmann
Harry Wagener
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Auer Lighting GmbH
Original Assignee
Auer Lighting GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Auer Lighting GmbH filed Critical Auer Lighting GmbH
Publication of EP1241399A2 publication Critical patent/EP1241399A2/de
Publication of EP1241399A3 publication Critical patent/EP1241399A3/de
Application granted granted Critical
Publication of EP1241399B1 publication Critical patent/EP1241399B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 Fresnel spotlights with an ellipsoidal reflector, a lamp and at least one Fresnel lens.
  • the photometrically relevant parts in ordinary optical systems for Fresnel lenses are lamp, Fresnel lens and spherical auxiliary reflector.
  • the lamp filament is substantially invariable in the spherical center of the spherical auxiliary reflector.
  • a part of the light emitted by the lamp is reflected back into this light and supports the light emission in the front half space.
  • This forward light is focused by the Fresnel lens.
  • the degree of light bundling is dependent on the distance between the Fresnel lens and the lamp. If the lamp filament is located in the focal point of the Fresnel lens, the narrowest light bundling results.
  • a quasi-parallel beam path also called a spot
  • the opening angle of the exiting light beam is steadily increased.
  • a diverging beam path also called flood
  • a disadvantage of such headlamps is the poor light output, especially in the spot position, since only a relatively small solid angle range of the lamp is detected by the Fresnel lens. It also affects disadvantageous in that the reflected light from the spherical reflector to a large extent hits the lamp filament itself, is absorbed there and additionally heats the lamp filament.
  • the object of the invention is to provide an optical system for Fresnel spotlights with an improved light efficiency, especially in spot, but also in Floodwolf while maintaining the uniformity of illuminance in the light field.
  • the object is achieved by an optical system for Fresnel spotlights with an ellipsoidal reflector, a lamp and at least one Fresnel lens, wherein the distance between the Fresnel lens and reflector to the Distance between the lamp and reflector in accordance with the setting of the opening angle of the light beam emerging from the headlight is in a defined dependency.
  • an ellipsoidal reflector with a large aperture is provided.
  • the spot position is adjusted by the fact that the lamp filament is located in the reflector-side focal point of the ellipsoid.
  • the reflected light from the reflector is almost completely united in the reflector-distant focal point of the El lipsoids.
  • the lamp filament located in the reflector-side focal point is actually imaged in the reflector's focal point of the ellipsoid.
  • the reflected light does not essentially hit the lamp filament.
  • the focal point of the Fresnel lens coincides with the focal point of the ellipsoid.
  • the light reflected from the reflector is almost completely detected by the Fresnel lens and emitted as a narrow spot light beam to the front.
  • the light output is thus considerably larger than in a conventional Fresnel lens spotlight.
  • the opening angle of the emerging from the Fresnel lens light beam can be increased almost arbitrarily by the lamp position with respect to the reflector on the one hand and the distance of the Fresnel lens to the reflector on the other hand is changed in a suitable manner.
  • these changes in distance must be made by a suitably chosen forced coupling.
  • the ellipsoidal reflector is made of a metallic or transparent material. Preferably, glass and polymeric materials are used. To produce a reflective surface, one of the two surfaces of the reflector is provided with a system of thin layers. As a result, visible radiation components are advantageously reflected and the invisible components, in particular the thermal radiation, transmitted.
  • a preferred embodiment of the invention is an optical system for Fresnel spotlights, wherein the light-reflecting surface of the reflector is structured light-scattering and no, one or two surfaces of the Fresnel lens are structured in a light-scattering manner.
  • An alternative preferred embodiment of the invention is an optical system for Fresnel spotlights, wherein at least one of the surfaces of the Fresnel lens is structured in a light-scattering manner and the light-reflecting surface of the reflector is not structured in a light-scattering manner.
  • the use of the optical system is provided in headlamps for film, stage, studio and photography.
  • the drawing consists of Fig. 1 and Fig. 2 ,
  • Fig. 1 shows the inventive optical system for Fresnel spotlights in spot position.
  • the optical system includes an ellipsoidal reflector (1), a lamp (2) and a Fresnel lens (3).
  • the emerging from the headlight beam (4) is indicated schematically.
  • the distances (a) between the stepped lens (3) and the reflector (1) and (b) between the lamp (2) and the reflector (1) are shown.
  • the spot position is adjusted by the fact that the lamp filament (2) is located in the reflector-side focal point (F1) of the ellipsoid (1).
  • the light reflected by the reflector (1) is almost completely united in the reflector-distant focal point (F2) of the ellipsoid (1).
  • the focal point of the Fresnel lens (F3) coincides with the focal point of the ellipsoid (F2).
  • the lamp filament (2) located in the reflector-side focal point (F1) is actually imaged in the reflector-distant focal point (F2) of the ellipsoid (1).
  • Fig. 2 shows the inventive optical system for Fresnel spotlights in Flood position.
  • the structure corresponds to the in Fig. 1 explained construction of an optical system.
  • the opening angle of the light beam (4) emerging from the Fresnel lens (3) can be increased almost arbitrarily by the distance (b) between the lamp (2) and the reflector (1) and the distance (a) be changed between the Fresnel lens (3) and the reflector (1).
  • the changes in distance are effected by a suitably selected forced coupling (in Fig. 1 and Fig. 2 not shown).
  • the lamp (2) is outside the reflector-side focal point (F1).
  • the focal point of the Fresnel lens (F3) does not coincide with the refractile focus of the ellipsoid (F2).
EP02003626A 2001-03-16 2002-02-16 Optisches System für Stufenlinsenscheinwerfer Expired - Lifetime EP1241399B1 (de)

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 EP1241399A2 (de) 2002-09-18
EP1241399A3 EP1241399A3 (de) 2005-04-13
EP1241399B1 true 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 (ja)
EP (1) EP1241399B1 (ja)
JP (2) JP2002324410A (ja)
DE (2) DE10113385C1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009011500U1 (de) 2009-08-20 2010-12-30 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Optisches System für eine LED-Leuchte

Families Citing this family (26)

* Cited by examiner, † Cited by third party
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
DE10361118B4 (de) * 2003-12-22 2011-12-22 Auer Lighting Gmbh Stufenlinsenscheinwerfer
DE102004014045A1 (de) * 2003-12-22 2005-07-28 Schott Ag Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente
DE10361121A1 (de) * 2003-12-22 2005-07-21 Schott Ag Optische Anordnung mit Stufenlinse
DE102004013962A1 (de) * 2003-12-22 2005-07-21 Schott Ag Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente
DE10361116B4 (de) * 2003-12-22 2010-06-17 Auer Lighting Gmbh Stufenlinsenscheinwerfer
RU2302585C2 (ru) * 2003-12-22 2007-07-10 Шотт Аг Прожектор с линзой френеля с взаимосвязанным изменением расстояния между осветительными элементами
US7483220B2 (en) * 2003-12-22 2009-01-27 Auer Lighting Gmbh Optical arrangement with stepped lens
EP1712833A4 (en) * 2004-02-04 2009-06-03 Nitto Denko Corp LIGHTING DEVICE AND METHOD OF USE THIS ILLUMINATOR AND METHOD OF MANUFACTURING THESE DEVICES USING THE PROMOTIONAL PRODUCT SURFACE IMAGE
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
DE202005009623U1 (de) * 2005-06-20 2006-10-26 Cooper Crouse-Hinds Gmbh Tragbare Leuchte
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
US20100061107A1 (en) * 2006-03-03 2010-03-11 Pavel Jurik Optical 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
US8317350B2 (en) 2009-02-25 2012-11-27 Black & Decker Inc. Power tool with a light for illuminating a workpiece
US20110058356A1 (en) 2009-02-25 2011-03-10 Black & Decker Inc. Power tool with light emitting assembly
US8328381B2 (en) 2009-02-25 2012-12-11 Black & Decker Inc. Light for a power tool and method of illuminating a workpiece
US9328915B2 (en) 2010-09-30 2016-05-03 Black & Decker Inc. Lighted power tool
US9028088B2 (en) 2010-09-30 2015-05-12 Black & Decker Inc. Lighted power tool
US9242355B2 (en) 2012-04-17 2016-01-26 Black & Decker Inc. Illuminated power tool
CN106678558A (zh) * 2016-08-31 2017-05-17 厦门益光照明科技股份有限公司 一种正装或倒装的led透镜和led照明灯具

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0846913A1 (de) * 1996-12-04 1998-06-10 Dedo Weigert Film GmbH Scheinwerfer mit veränderlichem Abstrahlwinkel

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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
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

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0846913A1 (de) * 1996-12-04 1998-06-10 Dedo Weigert Film GmbH Scheinwerfer mit veränderlichem Abstrahlwinkel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009011500U1 (de) 2009-08-20 2010-12-30 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Optisches System für eine LED-Leuchte
WO2011020920A1 (de) 2009-08-20 2011-02-24 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Led-leuchte, insbesondere led-scheinwerfer
US8931939B2 (en) 2009-08-20 2015-01-13 Arnold & Richter Cine Tecnik Gmbh & Co. Betriebs Kg LED luminaire, particularly LED headlight

Also Published As

Publication number Publication date
JP4792486B2 (ja) 2011-10-12
JP2008288215A (ja) 2008-11-27
EP1241399A2 (de) 2002-09-18
US6899451B2 (en) 2005-05-31
US20030063466A1 (en) 2003-04-03
DE10113385C1 (de) 2002-08-29
DE50212306D1 (de) 2008-07-10
EP1241399A3 (de) 2005-04-13
JP2002324410A (ja) 2002-11-08

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