EP1744097A1 - Méthode et appareil pour illuminer un objet - Google Patents

Méthode et appareil pour illuminer un objet Download PDF

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Publication number
EP1744097A1
EP1744097A1 EP05405439A EP05405439A EP1744097A1 EP 1744097 A1 EP1744097 A1 EP 1744097A1 EP 05405439 A EP05405439 A EP 05405439A EP 05405439 A EP05405439 A EP 05405439A EP 1744097 A1 EP1744097 A1 EP 1744097A1
Authority
EP
European Patent Office
Prior art keywords
image
lighting device
light source
point light
light component
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.)
Withdrawn
Application number
EP05405439A
Other languages
German (de)
English (en)
Inventor
Luzius Huber
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.)
Huber und Steiger GmbH
Original Assignee
Huber und Steiger 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 Huber und Steiger GmbH filed Critical Huber und Steiger GmbH
Priority to EP05405439A priority Critical patent/EP1744097A1/fr
Publication of EP1744097A1 publication Critical patent/EP1744097A1/fr
Withdrawn legal-status Critical Current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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21W2131/10—Outdoor lighting
    • F21W2131/107—Outdoor lighting of the exterior of buildings

Definitions

  • the invention relates to a method for illuminating objects such as buildings, e.g. of historic buildings used to make them visible during the evenings, or even of modern buildings and other objects such as bridges, walls, etc., for decoration or advertising purposes.
  • objects such as buildings, e.g. of historic buildings used to make them visible during the evenings, or even of modern buildings and other objects such as bridges, walls, etc., for decoration or advertising purposes.
  • it relates to a suitable for performing such a method lighting device.
  • a generic method in which a building is illuminated by means of a generic illumination device by directing light from a point light source directly and via a reflector through a collection optics to a transmitted light image and further by imaging optics to e.g. a facade of the building is blasted.
  • the transmitted light image which may be taken from the location of the lighting device from photograph of the building, congruent imaged on the facade, so that only this is lit and no direct light falls on the environment.
  • Another difficulty associated with the poor utilization of the light emitted by the point light source is that much light must be absorbed in the illumination device, causing it to heat up considerably. This makes a complex cooling necessary. The rest of the light used for the illumination is passed completely through the single transmitted light image, which absorbs a part of it and is thus subjected to a high thermal load. This sets the achievable illuminance barriers.
  • the invention is based on the object to provide a generic method in which the light of the point light source is better utilized.
  • a suitable for performing the method lighting device should be specified. This object is solved by the features in the characterizing part of claim 1 and by the features of claim 11.
  • the advantages achieved by the invention are, above all, that the illumination of an object with a desired illuminance requires less energy. This also results in less waste heat and the components of the lighting device, in particular the relatively sensitive transmitted light images are thermally less stressed. This also higher illuminance levels are possible.
  • the illumination device has a point light source 1, i. a light source which generates very intense light in a small volume, e.g. an arc lamp.
  • a first projection unit 2a is arranged, comprising a collection optics, to which one of the point light source 1 at a small distance in the beam following condenser lens 3 and a slightly spaced from the same acting as a collecting lens Fresnel lens 4 and one of the latter immediately downstream transmitted light image 5 and an imaging optics 6, which follows at a distance on the same and designed as a deflection mirror 7 deflecting device.
  • the imaging optics 6 may correspond to that of a slide projector.
  • the first projection unit 2 a diametrically opposite another such projection unit 2 b is attached, with a condensing lens 3 and a Fresnel lens 4 comprehensive collection optics and a transmitted light image 5, an imaging optics 6 and a deflection mirror 7, which follow one another in the beam path , is built exactly the same.
  • the deflecting mirror 7 are suspended so that they are freely rotatable about their centers within certain limits and can be fixed in any angular position.
  • each of the condenser lenses 3 of the collection optics each incident from the point light source 1 in a certain solid angle range light component, which then bundled by the collection optics to the respective transmitted light image 5 and emitted by the same and the imaging optics 6 and the deflection mirror 7 in a specific outdoor space sector becomes.
  • the entry surfaces are arranged so that the uneven, because concentrated around an equator and the poles towards falling intensity distribution of the light generated by the point light source 1 is exploited and they capture a greater proportion of light than the proportion of them covered solid angle range corresponds to the entire solid angle ,
  • the radiation is usually to a distant object, e.g. a building or other structure such as a bridge, a wall or the like, in such a way that each of the transmitted light images 5 is sharply imaged onto a specific, precisely defined surface area of the object.
  • the two transmitted light images 5 can be the same.
  • the deflecting mirrors 7 are adjusted in this case so that the outer space sectors strongly overlap, indeed are substantially congruent and the surface areas of the object illuminated by the two deflecting mirrors 7 are completely congruent.
  • the illumination device according to the invention acts essentially the same as if it contained only a transmitted light image, but the luminous efficacy is the same for the same power Point light source much higher, and without increased thermal stress on the transmitted light images.
  • the transmitted light images 5 may be derived from photographic images of the respective surface area illuminated by them, which were made from the location of the illumination device, but there are also other possibilities. In any case, about 37-40% of the total light emitted by the point light source 1 reaches the two collection optics and is used.
  • the point light source 1 and the collection optics of the projection units 2a, b are shown enlarged.
  • the latter additionally have a paraboloidal collecting mirror 8 surrounding the condenser lens 3.
  • FIG. 3 A further modification is shown in FIG. 3.
  • a light deflection which is designed as a flat, approximately paraboloid-shaped, downwardly open deflection screen 9, which surrounds the point light source 1, is provided.
  • the deflecting screen 9 may be mirrored on the underside or have a diffusely reflecting surface. About him further originating from the point light source 1 light is emitted to illuminate the environment down.
  • FIG. 4 shows a lighting device in which a lighting device 11, which is designed in accordance with FIG. 3, is fastened on a mast 10 and which at the same time serves to illuminate a distant object and to illuminate the surroundings of the mast 10.
  • the point light source 1 is surrounded by four projection units 2 a, b, c, d, which in turn each have a collecting optic with condenser lens 3 and Fresnel lens 4 as well as a transmitted light image 5, an imaging optic 6 and include a diversion.
  • the deflection comprises in addition to one of the imaging optics 6 downstream deflecting mirror 7 a same upstream further deflecting mirror 12.
  • the collecting optics are arranged in a horizontal plane symmetrically about the point light source 1, the deflecting mirror 7 preferably in a slightly higher parallel plane, but they can also at different heights lie.
  • the respective deflection mirror 12 deflects the light component which has penetrated the transmitted light image 5 at right angles upward and through the imaging optics 6 onto the deflection mirror 7, by which it is directed against the corresponding surface region of the illuminated object, as described in connection with the first Embodiment has been explained.
  • the utilization of the light of the point light source 1 is even better and the possible uses more diverse.
  • the condenser lenses 3 of the collection optics surround the point light source 1 in a quadrangle, wherein the edges of adjacent entrance surfaces abut each other, so that they cover a large solid angle zone largely and a total of about 74-80% of the total of the Point light source 1 generated light is collected and used.
  • the Jardinraumsektoren in which is radiated, overlap or be spaced apart or overlap in pairs, etc ..
  • the point light source 1 is similar to the illumination device according to the second embodiment of four projection units 2a, b, c, d surrounded, but each as in the lighting device according to the first embodiment are formed.
  • two projection units 2a, c emit a first object and the two remaining projection units 2b, d a second.
  • the deflection of the light into another plane, as it is accomplished in the lighting device according to the second embodiment by the deflecting mirror 12, is unnecessary here, since the factionsektoren, in which the light is emitted, so do not collide with the lighting device.
  • more than four projection units of the type described can be arranged in a plane around the point light source, for example six or eight.
  • additional projection units may be additionally provided at the top and bottom, as in the first embodiment.
  • the point light source can be surrounded in any way by projection units.
  • the imaging optics can be arranged before, after or between deflecting mirrors in the beam path. It can also be at a first Projection unit waived deflection mirror and thesubsequentlysvoutter be aligned as a whole.
  • filters or further images can be arranged in each beam path.
  • light-reflecting reflected light images can also be used.
  • the images may be variable, e.g. can be generated by a liquid crystal screen or they can be changed quickly like a film.
  • two or more projection units may only have the collection optics and the image in each case for themselves and the imaging optics and also the deflection or a part thereof in common, so that all the corresponding beam paths are guided through them, in particular if the corresponding outer space sectors adjoin one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP05405439A 2005-07-15 2005-07-15 Méthode et appareil pour illuminer un objet Withdrawn EP1744097A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05405439A EP1744097A1 (fr) 2005-07-15 2005-07-15 Méthode et appareil pour illuminer un objet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405439A EP1744097A1 (fr) 2005-07-15 2005-07-15 Méthode et appareil pour illuminer un objet

Publications (1)

Publication Number Publication Date
EP1744097A1 true EP1744097A1 (fr) 2007-01-17

Family

ID=34943001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05405439A Withdrawn EP1744097A1 (fr) 2005-07-15 2005-07-15 Méthode et appareil pour illuminer un objet

Country Status (1)

Country Link
EP (1) EP1744097A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2112552A1 (fr) * 2008-04-04 2009-10-28 Huber und Steiger Gmbh Dispositif de projection et d'éclairage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02235089A (ja) * 1989-03-09 1990-09-18 Fuji Photo Optical Co Ltd 液晶プロジェクタ
WO1998034140A1 (fr) * 1997-01-31 1998-08-06 Remote Source Lighting International, Inc. Dispositif d'eclairage optique a orifices multiples et a deux plans pour connecteurs optiques
US6379027B1 (en) * 2000-03-30 2002-04-30 Ruud Lighting, Inc. Light-generating and beam-establishing device
US6554456B1 (en) * 2000-05-05 2003-04-29 Advanced Lighting Technologies, Inc. Efficient directional lighting system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02235089A (ja) * 1989-03-09 1990-09-18 Fuji Photo Optical Co Ltd 液晶プロジェクタ
WO1998034140A1 (fr) * 1997-01-31 1998-08-06 Remote Source Lighting International, Inc. Dispositif d'eclairage optique a orifices multiples et a deux plans pour connecteurs optiques
US6379027B1 (en) * 2000-03-30 2002-04-30 Ruud Lighting, Inc. Light-generating and beam-establishing device
US6554456B1 (en) * 2000-05-05 2003-04-29 Advanced Lighting Technologies, Inc. Efficient directional lighting system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 551 (P - 1139) 7 December 1990 (1990-12-07) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2112552A1 (fr) * 2008-04-04 2009-10-28 Huber und Steiger Gmbh Dispositif de projection et d'éclairage

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