EP0180665A1 - Lighting device with framing gate - Google Patents

Lighting device with framing gate Download PDF

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Publication number
EP0180665A1
EP0180665A1 EP84115511A EP84115511A EP0180665A1 EP 0180665 A1 EP0180665 A1 EP 0180665A1 EP 84115511 A EP84115511 A EP 84115511A EP 84115511 A EP84115511 A EP 84115511A EP 0180665 A1 EP0180665 A1 EP 0180665A1
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EP
European Patent Office
Prior art keywords
diaphragm
housing
light source
reflector
tongues
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Withdrawn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
EP84115511A
Other languages
German (de)
French (fr)
Inventor
Denis Rousselin
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.)
INLINES PRODUCTIONS SA
Original Assignee
INLINES PRODUCTIONS SA
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 INLINES PRODUCTIONS SA filed Critical INLINES PRODUCTIONS SA
Publication of EP0180665A1 publication Critical patent/EP0180665A1/en
Withdrawn legal-status Critical Current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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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

  • Such lighting devices with framing exist and are generally produced as illustrated diagrammatically and in longitudinal section in FIG. 1. They include inside a housing 1 a light source, formed by an incandescent lamp 2, generally a normal halogen lamp, and a smooth or faceted reflector 3, a condenser formed by two lenses 4,5, a diaphragm 6 and a sliding focusing lens 7.
  • a light source formed by an incandescent lamp 2, generally a normal halogen lamp, and a smooth or faceted reflector 3, a condenser formed by two lenses 4,5, a diaphragm 6 and a sliding focusing lens 7.
  • the present invention aims to provide a lighting device with framing which is compact, inexpensive, with better light output and free from the aforementioned drawbacks.
  • This object is achieved by the device according to the invention, which is characterized by the fact that it comprises a housing containing a light source, a diaphragm directly delimiting a portion of the light beam emitted by the source and a sliding lens for focusing. point.
  • the illustrated framing lighting device comprises a housing 8 containing a light source 9 formed by a reflector 10 and a halogen bulb 11 with axial longitudinal filament L.
  • the internal surface of the reflector 10 is granited, bumpy or hammered and creates a diffuse beam. Having a light source with an axial filament avoids the phenomenon of central shadow.
  • This case includes one or more slides or guides 12 allowing the insertion of a diaphragm formed by one or more tabs.
  • FIG. 5 illustrates three variants of the diaphragm, each consisting of a single tongue 13A, 13B and 13C, each having an opening of circular, for example 14A or triangular 14B shape, respectively several openings 14C corresponding to letters intended to be projected.
  • the diaphragm illustrated in FIG. 6 it is formed by several tongues 13 (here four) with rectilinear end, arranged in the same plane and which define between them, once inserted in the corresponding guides 12 of the housing 8, a polygonal opening 14 (here square).
  • the shape and dimensions of this opening 14 can be modified by moving by sliding radial (arrow I) one or more of the tongues 13; in addition, a clearance can be provided between the guides 12 and the tongues 13 so that the latter can also be slightly angularly displaced (arrow II), in order to correct any centering defects of the light source. , or to frame an object at non-right angles.
  • the diaphragm is placed in close proximity to the light source and that no optical element is inserted between these two elements.
  • the diaphragm therefore directly limits the light beam emitted by the source 9,10,11.
  • the front part of the housing 8 is provided with a sliding lens 15 provided with a lens 16, which is used for focusing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The device comprises a housing (8) enclosing a light source formed by a halogen lamp (9) with an axial filament and a reflector (10), an adjustable diaphragm (13) directly delimiting a portion of the light beam and a sliding objective (15) provided with a lens (16) for focusing. <IMAGE>

Description

Pour illuminer toutes sortes d'objets, tableaux, oeuvres d'art ou même des vitrines, il est nécessaire de disposer d'un dispositif d'éclairage dont la forme et la dimension du faisceau lumineux peuvent être ajustées pour cadrer ledit objet.To illuminate all kinds of objects, paintings, works of art or even display cases, it is necessary to have a lighting device whose shape and size of the light beam can be adjusted to frame said object.

De tels dispositifs d'éclairage avec cadrage existent et sont généralement réalisés comme illustré schématiquement et en coupe longitudinale sur la figure 1. Ils comprennent à l'intérieur d'un boîtier 1 une source lumineuse, formée d'une lampe à incandescence 2, généralement une lampe halogène normale, et d'un réflecteur 3 lisse ou facetté, un condenseur formé de deux lentilles 4,5, un diaphragme 6 et un objectif de mise au point 7 coulissant.Such lighting devices with framing exist and are generally produced as illustrated diagrammatically and in longitudinal section in FIG. 1. They include inside a housing 1 a light source, formed by an incandescent lamp 2, generally a normal halogen lamp, and a smooth or faceted reflector 3, a condenser formed by two lenses 4,5, a diaphragm 6 and a sliding focusing lens 7.

Ces dispositifs connus sont encombrants, onéreux et présentent de plus l'inconvénient d'un faisceau lumineux non homogène dû à l'ombre du filament F de la lampe 2 qui forme une zone d'ombre centrale. De plus le rendement lumineux est relativement faible même lorsqu'on utilise un réflecteur à facettes et, dans ce dernier cas, on augmente encore l'inhomogénéité du faisceau lumineux par des points brillants.These known devices are bulky, expensive and also have the disadvantage of a non-homogeneous light beam due to the shade of the filament F of the lamp 2 which forms a central shadow area. In addition, the light output is relatively low even when a faceted reflector is used and, in the latter case, the inhomogeneity of the light beam is further increased by bright spots.

La présente invention a pour but de fournir un dispositif d'éclairage avec cadrage qui soit compact, bon marché, d'un meilleur rendement lumineux et exempt des inconvénients précités. Ce but est atteint par le dispositif selon l'invention, qui est caractérisé par le fait qu'il comprend un boîtier renfermant une source lumineuse, un diaphragme délimitant directement une portion du faisceau lumineux émis par la source et un objectif coulissant pour la mise au point.The present invention aims to provide a lighting device with framing which is compact, inexpensive, with better light output and free from the aforementioned drawbacks. This object is achieved by the device according to the invention, which is characterized by the fact that it comprises a housing containing a light source, a diaphragm directly delimiting a portion of the light beam emitted by the source and a sliding lens for focusing. point.

Le dessin annexé illustre schématiquement et à titre d'exemple une forme d'exécution du dispositif selon l'invention.

  • La figure 2 en est une coupe longitudinale.
  • La figure 3 illustre la source lumineuse utilisée.
  • La figure 4 est une vue partielle du réflecteur de la source lumineuse.
  • La figure 5 illustre trois variantes du diaphragme à ouverture de forme fixe.
  • La figure 6 illustre un diaphragme à ouverture polygonale de section réglable.
The appended drawing illustrates schematically and by way of example an embodiment of the device according to the invention.
  • Figure 2 is a longitudinal section.
  • Figure 3 illustrates the light source used.
  • Figure 4 is a partial view of the reflector of the light source.
  • FIG. 5 illustrates three variants of the aperture diaphragm of fixed shape.
  • FIG. 6 illustrates a diaphragm with a polygonal opening of adjustable section.

Le dispositif d'éclairage avec cadrage illustré comporte un boîtier 8 renfermant une source lumineuse 9 formée d'un réflecteur 10 et d'une ampoule halogène 11 à filament longitudinal axial L. La surface interne du réflecteur 10 est granitée, bosselée ou martelée et crée un faisceau diffus. Le fait d'avoir une source lumineuse à filament axial évite le phénomène d'ombre centrale. Ce boitier comporte une ou plusieurs glissières ou guides 12 permettant l'insertion d'un diaphragme formé par une ou plusieurs languettes.The illustrated framing lighting device comprises a housing 8 containing a light source 9 formed by a reflector 10 and a halogen bulb 11 with axial longitudinal filament L. The internal surface of the reflector 10 is granited, bumpy or hammered and creates a diffuse beam. Having a light source with an axial filament avoids the phenomenon of central shadow. This case includes one or more slides or guides 12 allowing the insertion of a diaphragm formed by one or more tabs.

La figure 5 illustre trois variantes du diaphragme, chacune constituée par une languette unique 13A, 13B et 13C, présentant chacune une ouverture de forme par exemple circulaire 14A ou triangulaire 14B, respectivement plusieurs ouvertures 14C correspondant à des lettres destinées à être projetées.FIG. 5 illustrates three variants of the diaphragm, each consisting of a single tongue 13A, 13B and 13C, each having an opening of circular, for example 14A or triangular 14B shape, respectively several openings 14C corresponding to letters intended to be projected.

Quant au diaphragme illustré sur la figure 6, il est formé de plusieurs languettes 13 (ici quatre) à bout rectiligne, disposées dans un même plan et qui définissent entre elles, un fois insérées dans les guides correspondants 12 du boîtier 8, une ouverture polygonale 14 (ici carrée). La forme et les dimensions de cette ouverture 14 peuvent être modifiées en déplaçant par coulissement radial (flèche I) une ou plusieurs des languettes 13; en outre, un jeu peut être prévu entre les guides 12 et les languettes 13 de manière à ce que celles-ci puissent être également légèrement déplacées angulai- rement (flèche II), afin de corriger d'éventuels défauts de centrage de la source lumineuse, ou de cadrer un objet à angles non droits.As for the diaphragm illustrated in FIG. 6, it is formed by several tongues 13 (here four) with rectilinear end, arranged in the same plane and which define between them, once inserted in the corresponding guides 12 of the housing 8, a polygonal opening 14 (here square). The shape and dimensions of this opening 14 can be modified by moving by sliding radial (arrow I) one or more of the tongues 13; in addition, a clearance can be provided between the guides 12 and the tongues 13 so that the latter can also be slightly angularly displaced (arrow II), in order to correct any centering defects of the light source. , or to frame an object at non-right angles.

Il est important pour cette invention que le diaphragme soit disposé à proximité immédiate de la source lumineuse et qu'aucun élément optique ne soit inséré entre ces deux éléments. Le diaphragme limite donc directement le faisceau lumineux émis par la source 9,10,11.It is important for this invention that the diaphragm is placed in close proximity to the light source and that no optical element is inserted between these two elements. The diaphragm therefore directly limits the light beam emitted by the source 9,10,11.

En outre, la partie frontale du boîtier 8 est munie d'un objectif coulissant 15 muni d'une lentille 16, qui sert à la mise au point.In addition, the front part of the housing 8 is provided with a sliding lens 15 provided with a lens 16, which is used for focusing.

Il a été constaté que, par l'utilisation d'un réflecteur granité, bosselé ou martelé, d'une lampe à filament axial et surtout par la suppression du condenseur, le rendement lumineux d'un tel dispositif était à puissance égale de 30 à 80 % supérieur à celui des dispositifs connus. En outre, la suppression du condenseur réduit l'encombrement du dispositif, plus particulièrement sa longueur, ainsi que son coût.It was found that, by the use of a granite, dented or hammered reflector, of an axial filament lamp and especially by the elimination of the condenser, the light output of such a device was at power equal to 30 to 80% higher than that of known devices. In addition, the removal of the condenser reduces the size of the device, more particularly its length, as well as its cost.

Ce résultat est parfaitement surprenant, car jusqu'ici tout indiquait qu'il n'était pas possible d'obtenir un cadrage précis et net en diaphragmant directement le faisceau émis par la source lumineuse. Or, non seulement ceci s'avère possible, mais permet encore une réduction du prix, de l'encombrement, et une augmentation du rendement du dispositif.This result is perfectly surprising, because so far everything indicated that it was not possible to obtain a precise and clear framing by directly diaphragm the beam emitted by the light source. However, this is not only possible, but also allows a reduction in price, size, and an increase in the yield of the device.

Claims (7)

1. Dispositif d'éclairage avec cadrage, caractérisé par le fait qu'il comprend un boîtier renfermant une source lumineuse, un diaphragme délimitant directement une portion du faisceau lumineux émis par la source et un objectif coulissant pour la mise au point.1. Lighting device with framing, characterized in that it comprises a housing containing a light source, a diaphragm directly delimiting a portion of the light beam emitted by the source and a sliding lens for focusing. 2. Dispositif selon la revendication 1, caractérisé par le fait que la source lumineuse comporte une lampe halogène à filament axial et un réflecteur.2. Device according to claim 1, characterized in that the light source comprises a halogen lamp with an axial filament and a reflector. 3. Dispositif selon la revendication 2, caractérisé par le fait que la surface interne du réflecteur est bosselée, martelée ou granitée.3. Device according to claim 2, characterized in that the internal surface of the reflector is embossed, hammered or granite. 4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que le diaphragme est formé par une ou plusieurs languettes coulissant dans des glissières pratiquées dans le boîtier.4. Device according to one of claims 1 to 3, characterized in that the diaphragm is formed by one or more tabs sliding in slides made in the housing. 5. Dispositif selon la revendication 4, caractérisé par le fait que le diaphragme est constitué par une languette unique interchangeable, qui présente une ou plusieurs ouvertures de forme.5. Device according to claim 4, characterized in that the diaphragm is constituted by a single interchangeable tongue, which has one or more shaped openings. 6. Dispositif selon la revendication 4, caractérisé par le fait que le diaphragme est constitué par plusieurs languettes et que la dimension de l'ouverture du diaphragme et sa forme sont réglables par modification de la position de ces languettes par rapport au boîtier.6. Device according to claim 4, characterized in that the diaphragm is constituted by several tongues and that the dimension of the opening of the diaphragm and its shape are adjustable by modifying the position of these tongues relative to the housing. 7. Dispositif selon la revendication 6, caractérisé par le fait que le diaphragme est constitué par quatre languettes à extrémité rectiligne disposées perpendiculaires les unes aux autres dans un même plan, de telle sorte que leurs extrémités rectilignes définissent entre elles une ouverture quadrilatérale de dimensions réglables par déplacement dans ce plan desdites languettes.7. Device according to claim 6, characterized in that the diaphragm is constituted by four tabs with rectilinear end arranged perpendicular to each other in the same plane, so that their rectilinear ends define between them a quadrilateral opening of adjustable dimensions by displacement in this plane of said tongues.
EP84115511A 1984-11-06 1984-12-15 Lighting device with framing gate Withdrawn EP0180665A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66882584A 1984-11-06 1984-11-06
US668825 1984-11-06

Publications (1)

Publication Number Publication Date
EP0180665A1 true EP0180665A1 (en) 1986-05-14

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ID=24683888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115511A Withdrawn EP0180665A1 (en) 1984-11-06 1984-12-15 Lighting device with framing gate

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EP (1) EP0180665A1 (en)
JP (1) JPS61110901A (en)
ES (1) ES542373A0 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673488A1 (en) * 1992-11-05 1995-09-27 CUNNINGHAM, David W. Lighting fixture
CN102705731A (en) * 2012-05-17 2012-10-03 苏州市伦琴工业设计有限公司 Adjustable LED (light emitting diode) illuminating lamp
CN102705730A (en) * 2012-05-16 2012-10-03 苏州市伦琴工业设计有限公司 Lens assembly controllable LED (light emitting diode)
EP3385600A4 (en) * 2015-11-30 2018-10-10 YLX Incorporated Lighting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01142102U (en) * 1988-03-24 1989-09-28

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3571588A (en) * 1968-09-06 1971-03-23 Hilzen H Y Electrical spotlight construction affording economical assembly and easy manipulation
GB1259792A (en) * 1969-04-29 1972-01-12 Rotaflex Ltd Improvements in electrical light fittings
EP0005080A1 (en) * 1978-04-26 1979-10-31 The Rank Organisation Limited Spotlight lantern projection system
FR2431655A1 (en) * 1978-07-10 1980-02-15 Arai Akira VARIABLE MASKING DEVICE FOR LIGHTING PROJECTORS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3571588A (en) * 1968-09-06 1971-03-23 Hilzen H Y Electrical spotlight construction affording economical assembly and easy manipulation
GB1259792A (en) * 1969-04-29 1972-01-12 Rotaflex Ltd Improvements in electrical light fittings
EP0005080A1 (en) * 1978-04-26 1979-10-31 The Rank Organisation Limited Spotlight lantern projection system
FR2431655A1 (en) * 1978-07-10 1980-02-15 Arai Akira VARIABLE MASKING DEVICE FOR LIGHTING PROJECTORS

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673488A1 (en) * 1992-11-05 1995-09-27 CUNNINGHAM, David W. Lighting fixture
EP0673488A4 (en) * 1992-11-05 1996-06-05 David W Cunningham Lighting fixture.
CN102705730A (en) * 2012-05-16 2012-10-03 苏州市伦琴工业设计有限公司 Lens assembly controllable LED (light emitting diode)
CN102705731A (en) * 2012-05-17 2012-10-03 苏州市伦琴工业设计有限公司 Adjustable LED (light emitting diode) illuminating lamp
EP3385600A4 (en) * 2015-11-30 2018-10-10 YLX Incorporated Lighting device

Also Published As

Publication number Publication date
ES8602230A1 (en) 1985-12-01
JPS61110901A (en) 1986-05-29
ES542373A0 (en) 1985-12-01

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