EP1112458A1 - Appareil d'eclairage - Google Patents
Appareil d'eclairageInfo
- Publication number
- EP1112458A1 EP1112458A1 EP99968702A EP99968702A EP1112458A1 EP 1112458 A1 EP1112458 A1 EP 1112458A1 EP 99968702 A EP99968702 A EP 99968702A EP 99968702 A EP99968702 A EP 99968702A EP 1112458 A1 EP1112458 A1 EP 1112458A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- lighting apparatus
- light
- light beam
- light source
- 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
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
- F21V7/00—Reflectors for light sources
- F21V7/10—Construction
-
- 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
- F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
-
- 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
- F21W2131/20—Lighting for medical use
- F21W2131/205—Lighting for medical use for operating theatres
Definitions
- the invention relates to a lighting apparatus with a light source unit having at least one light source and a first reflector, and with at least one optical element, the light emitted by the light source being bundled by the first reflector to form a light beam which can be influenced by the optical element.
- Such lighting devices are used, among other things, in stage lighting technology.
- So-called PAR lamps are known as stage lamps, for example, which have a lamp with a parabolic mirror in an aluminum housing and, for example, a color filter can be arranged in front of its light outlet to achieve a special optical effect.
- stage lamps for example, which have a lamp with a parabolic mirror in an aluminum housing and, for example, a color filter can be arranged in front of its light outlet to achieve a special optical effect.
- motorized filter belts with differently colored filter sections can be used.
- rotatable effect discs (gobos) with different color filters arranged in the circumferential direction are preferably used, in which the filters are not exposed to mechanical tensile stress.
- a disadvantage of these PAR lamps is that the color filters that can be used must correspond at least to the diameter of the light exit opening of the lamp housing in order to completely capture the emerging light beam. If different color filters are to be used, the number of color filters arranged on a filter disc is limited, if one does not want to exceed a practical size of the filter disc.
- a lamp structure for an operating light in which the light from a light source is focused by a parabolic mirror.
- the start of an optical fiber, consisting of a glass rod, is arranged in the focal point of the light beam.
- the light rays emerging divergently at the end of the light guide are parallelized by a reflector arrangement.
- the reflector arrangement essentially consists of a prism body and a reflector, the prism body deflecting all light rays emerging from the light guide and shining into the reflector in such a way that the light rays are reflected parallel by the reflector in the direction of the operating field.
- the light guide emerges from the rear space of the reflector through an opening in it and extends to just before the prism body.
- the particular advantage of such an arrangement is that the distance between the light source and the reflector can be chosen as desired, in that an almost lossless light guide guides the light from the light source to the reflector. This arrangement also solves the problem of fanning out the rays emerging from the light source and emitting them onto the operating field with almost the same illuminance.
- a lighting apparatus of the type mentioned in the introduction by a reflector unit with a second reflector and a concave third reflector, the concave third reflector having an opening for the light beam and the light beam being reflected by the second reflector onto the third reflector, and wherein the optical element is arranged between the light source unit and the reflector unit.
- the lighting apparatus thus has three functional units.
- the light source unit has the task of providing a directed light beam - at least the major part of the light emitted by the light source - with a cross section that is comparatively small at least at one point.
- the first reflectors to be used are preferably those which have a focus.
- Rotation-symmetrical parabolic mirrors or also rotationally symmetrical, parabolic-shaped reflectors are particularly suitable, the reflector surfaces of which rise comparatively steeply from the vertex of the reflector and approach the vertex of the optical axis of the light beam to be generated again, so that the angle between the imaginary lines between the Vertex and two opposite outer edges of the reflector is preferably below 45 °.
- These reflectors have a focus - albeit a blurred one.
- the light beam can then be influenced by one optical element or a plurality of optical elements arranged one behind the other.
- optical elements not only color filters or diaphragms come into consideration as optical elements, but all types of optical elements can be mentioned, provided they do not expand the light beam beyond a certain degree.
- the light beam is then expanded to a desired cross-sectional area in the reflector unit arranged behind the optical element.
- the light beam is first thrown back from the second reflector onto the concave third reflector, which reflects the then expanded light beam out of the lighting apparatus.
- the second reflector can preferably be convex or even flat, but any other configuration of the reflector that widens the light beam is also conceivable.
- an advantage of the apparatus according to the invention over the prior art is that the optical elements to be used are comparatively small due to the small cross section of the light beam in front of the reflector unit, and therefore the production costs of a lighting apparatus with regard to these elements can be minimized.
- Another advantage is that due to the functional separation from the generation of a directed light beam and its optical processing, there is much greater freedom in the structural design of the necessary apparatus housing with regard to the necessary heat dissipation. This is particularly advantageous if high-power lamps are used as light sources that work at a very high operating temperature. The same applies to the heat which may possibly be dissipated on the optical element itself and which arises when light is absorbed.
- the first reflector is designed in the manner of an ellipsoid open on one side, the light source being formed in the region of the first focal point of the reflector and the light beam converging in a second focal point.
- the light beam can be focused very precisely in a simple manner, without the need for additional optical elements.
- the optical element to be used can be made particularly small if it is arranged in the region of the second focal point. Nevertheless, the optical element can also be arranged in front of or behind the second focal point, or a plurality of optical elements in front of, in and / or behind the focal point.
- the second reflector can be flat.
- a lens can be arranged behind the focal point at a distance from its focal length as an optical element.
- the light beam can be parallelized with this lens, so that the distance between the lens and the reflector unit can be as large as desired.
- a large number of optical elements can thus be arranged in a simple manner between the lens and the reflector unit.
- the distance from the second reflector to the third reflector is adjustable.
- the degree of expansion of the light beam can be changed.
- the lighting apparatus has a device for positioning one or more optical elements.
- this device for positioning one or more optical elements can be a rotatable effect disk. So you can switch from one optical element to another by rotating the effect disc. Film-like image sequences can also be generated during a run through different optical elements with a constantly rotating effect disk.
- the effect pane has only one passage opening and is otherwise opaque. The effect disc can thus be used as a switchable aperture to either let the light beam through completely or block it completely.
- the reflectors can be mirrored.
- the reflectors can be coated with a metal layer.
- the reflectors are made of an aluminum-containing material.
- the reflective properties of aluminum are such that there is no need for mirroring in the sense of minimizing production costs.
- the reflector surfaces should be polished.
- Such reflectors can be drawn from an aluminum sheet.
- the first and the third reflector are each formed in one piece with an essentially cylindrical housing wall, the housing walls being connectable to one another via an interference fit.
- FIG. 1 represents the principle of the invention.
- Figure 1 shows the principle of the lighting apparatus according to the invention with a light source unit 3 having at least one light source 1 and a first reflector 2.
- the reflector 2 is designed in the manner of a rotationally symmetrical ellipsoid, which is open on one side, the light source 1 having a first focal point of the Forms ellipsoids and the light is focused in a second focal point 4.
- an effect disk 5 with optical elements 6 protrudes into the light beam.
- the light beam passes through an opening 7 through a rotationally symmetrical, concave third reflector 9 and is expanded by a second, convexly designed, rotationally symmetrical reflector 8 and deflected onto the third reflector 9, from where the now expanded light beam from the lighting apparatus is reflected out.
- the second and third reflectors 8, 9 form the reflector unit 10.
- the rotationally symmetrical design of the mirrors and reflectors 2, 8 and 9 is particularly advantageous in the case of punctiform light sources, since this results in a comparatively uniform distribution of the light intensity over the cross section of the light beam.
- the mirrors and reflectors do not necessarily have to be rotationally symmetrical.
- the mirrors and reflectors 2, 8 and 9 can be surface-symmetrical in the case of an essentially line-shaped light source, for example in the manner of a fluorescent tube.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Elements Other Than Lenses (AREA)
- Vehicle Body Suspensions (AREA)
- Polarising Elements (AREA)
- Seal Device For Vehicle (AREA)
- Liquid Crystal Substances (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19840475A DE19840475A1 (de) | 1998-09-04 | 1998-09-04 | Beleuchtungsapparatur |
DE19840475 | 1998-09-04 | ||
PCT/DE1999/002817 WO2000014447A1 (fr) | 1998-09-04 | 1999-09-03 | Appareil d'eclairage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1112458A1 true EP1112458A1 (fr) | 2001-07-04 |
EP1112458B1 EP1112458B1 (fr) | 2003-02-05 |
Family
ID=7879873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99968702A Expired - Lifetime EP1112458B1 (fr) | 1998-09-04 | 1999-09-03 | Appareil d'eclairage |
Country Status (7)
Country | Link |
---|---|
US (1) | US6572246B1 (fr) |
EP (1) | EP1112458B1 (fr) |
AT (1) | ATE232279T1 (fr) |
AU (1) | AU1147900A (fr) |
DE (2) | DE19840475A1 (fr) |
ES (1) | ES2190285T3 (fr) |
WO (1) | WO2000014447A1 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2441555A1 (fr) * | 2001-03-27 | 2002-10-03 | Meridian Automotive Systems, Inc. | Bloc optique a structure simplifiee pour automobile, feu rouge central haut et optique de feux arrieres utilisant un tel bloc |
ITTO20020371A1 (it) * | 2002-05-06 | 2003-11-06 | Bruno Baiardi | Proiettore di luce con set di filtri ruotanti atttorno al proprio asse. |
US7178937B2 (en) * | 2004-01-23 | 2007-02-20 | Mcdermott Vernon | Lighting device and method for lighting |
US8016470B2 (en) * | 2007-10-05 | 2011-09-13 | Dental Equipment, Llc | LED-based dental exam lamp with variable chromaticity |
DE102005061204A1 (de) * | 2005-12-21 | 2007-07-05 | Perkinelmer Elcos Gmbh | Beleuchtungsvorrichtung, Beleuchtungssteuergerät und Beleuchtungssystem |
US8002446B1 (en) | 2008-06-09 | 2011-08-23 | Koninklijke Philips Electronics N.V. | Virtual direct and indirect suspended lighting fixture |
US8439525B2 (en) * | 2008-08-29 | 2013-05-14 | Abl Ip Holding Llc | Luminaires having enhanced light distribution and applications thereof |
US20100053971A1 (en) * | 2008-08-29 | 2010-03-04 | Abl Ip Holding Llc | Asymmetric Lighting Systems and Applications Thereof |
US8282248B1 (en) | 2008-12-03 | 2012-10-09 | Koninklijke Philips Electronics N.V. | Luminaire including upper and lower dome-shaped optical elements |
US8573823B2 (en) | 2011-08-08 | 2013-11-05 | Quarkstar Llc | Solid-state luminaire |
CN103858244B (zh) | 2011-08-08 | 2018-08-10 | 夸克星有限责任公司 | 包括多个发光元件的照明装置 |
US9081125B2 (en) | 2011-08-08 | 2015-07-14 | Quarkstar Llc | Illumination devices including multiple light emitting elements |
TWM435795U (en) * | 2012-04-03 | 2012-08-11 | Inhon Internat Co Ltd | Lighting structure |
CN104755832B (zh) | 2012-09-13 | 2018-12-21 | 夸克星有限责任公司 | 提供直接和间接照明的照明*** |
WO2014043369A2 (fr) | 2012-09-13 | 2014-03-20 | Quarkstar Llc | Dispositifs pour éclairage d'espace de travail |
EP2864694B1 (fr) | 2013-02-08 | 2016-01-20 | Quarkstar LLC | Dispositif d'éclairage fournissant un éclairage direct et indirect |
EP3270041B1 (fr) | 2013-04-19 | 2019-07-10 | Quarkstar LLC | Dispositifs d'éclairage ayant des éléments optiques réglables |
WO2015010080A1 (fr) | 2013-07-18 | 2015-01-22 | Quarkstar Llc | Module de luminaire comportant de multiples éléments de guidage de lumière |
WO2015042174A1 (fr) | 2013-09-17 | 2015-03-26 | Quarkstar Llc | Dispositif d'éclairage à guide de lumière, doté d'un modificateur de divergence de lumière |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2755374A (en) * | 1952-03-13 | 1956-07-17 | Ott Walter | Reflecting system |
US3294962A (en) * | 1965-02-23 | 1966-12-27 | Hilzen Hy | Indirect or "bounce" lighting apparatus |
DE2133719C3 (de) * | 1971-07-07 | 1978-08-24 | Original Hanau Quarzlampen Gmbh, 6450 Hanau | Operationsleuchte |
GB1360481A (en) * | 1972-02-14 | 1974-07-17 | Lucas Industries Ltd | Lamps |
US3900726A (en) * | 1974-04-25 | 1975-08-19 | Berkey Colortran | Compact follow spot |
DE8604395U1 (de) * | 1986-02-19 | 1988-12-01 | Daume & Jordan GmbH & Co KG, 5600 Wuppertal | Blendungsfreie Leuchte mit streifenförmigem Abblendreflektor |
GB8805581D0 (en) * | 1988-03-09 | 1988-04-07 | Pulsar Light Of Cambridge Ltd | Improved spotlight & control system therefor |
JP3173033B2 (ja) * | 1991-03-20 | 2001-06-04 | ソニー株式会社 | 放光装置 |
US5335158A (en) * | 1992-05-21 | 1994-08-02 | Eastman Kodak Company | High efficiency linear light source |
DE4417695C2 (de) * | 1994-05-20 | 1998-01-29 | Reitter & Schefenacker Gmbh | Kraftfahrzeugleuchte |
EP0751339A3 (fr) * | 1995-06-30 | 1998-05-06 | CUNNINGHAM, David W. | Dispositif d'éclairage comprenant un réflecteur moulé |
GB2310035A (en) * | 1996-02-06 | 1997-08-13 | Stephen Ernest Watts | Special effect lighting |
-
1998
- 1998-09-04 DE DE19840475A patent/DE19840475A1/de not_active Withdrawn
-
1999
- 1999-09-03 EP EP99968702A patent/EP1112458B1/fr not_active Expired - Lifetime
- 1999-09-03 AT AT99968702T patent/ATE232279T1/de not_active IP Right Cessation
- 1999-09-03 ES ES99968702T patent/ES2190285T3/es not_active Expired - Lifetime
- 1999-09-03 AU AU11479/00A patent/AU1147900A/en not_active Abandoned
- 1999-09-03 US US09/786,395 patent/US6572246B1/en not_active Expired - Fee Related
- 1999-09-03 DE DE59904233T patent/DE59904233D1/de not_active Expired - Fee Related
- 1999-09-03 WO PCT/DE1999/002817 patent/WO2000014447A1/fr active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0014447A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59904233D1 (de) | 2003-03-13 |
EP1112458B1 (fr) | 2003-02-05 |
DE19840475A1 (de) | 2000-03-30 |
WO2000014447A1 (fr) | 2000-03-16 |
US6572246B1 (en) | 2003-06-03 |
AU1147900A (en) | 2000-03-27 |
ATE232279T1 (de) | 2003-02-15 |
ES2190285T3 (es) | 2003-07-16 |
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