EP0767339B1 - Projecteur multi-hublots améliorant l'homogénéité de la plage éclairée - Google Patents
Projecteur multi-hublots améliorant l'homogénéité de la plage éclairée Download PDFInfo
- Publication number
- EP0767339B1 EP0767339B1 EP96402106A EP96402106A EP0767339B1 EP 0767339 B1 EP0767339 B1 EP 0767339B1 EP 96402106 A EP96402106 A EP 96402106A EP 96402106 A EP96402106 A EP 96402106A EP 0767339 B1 EP0767339 B1 EP 0767339B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- optical
- source
- projector
- projector according
- 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
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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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S362/00—Illumination
- Y10S362/804—Surgical or dental spotlight
Definitions
- the present invention relates to the technical field of projectors used in the medical sector and, in particular, for theaters surgical operations.
- the object of the invention is, more specifically, the projectors of the type multiple portholes, that is to say those having one or more light sources from each of which is formed a series of lighting beams.
- patent FR 2,339,129 describes a lighting projector comprising, in a housing, two lighting systems each comprising a light source on either side of which are disposed a frosted area and a composite condenser optical system. two lenses and forming a main light beam.
- An optical element is placed in the path of each main light beam to form, after reflecting on a mirror and passing through a window in the housing, an image of the frosted beach in a plane of use to be illuminated.
- the use plan considered is illuminated by the light beams from the mirrors which are properly oriented so that the axes of the beams converge to the same point corresponding to the center of the field to be illuminated.
- Such a projector is designed to eliminate drop shadows its particular use in surgical operating rooms.
- This projector allows also obtaining a field of uniform illumination of high intensity bright with a cold light.
- the sources lights are placed in the central region of the housing from which extend radial arms arranged to include the portholes for the light beams.
- the realization of the projector in the form of a star casing offers the advantage of limiting its section of obstruction or obstruction in the plane horizontal, while allowing the least possible disturbance, the ventilation of the space in which the projector is installed.
- the document FR 2 109 954 describes a lighting projector providing illumination of a work area with reduced shadows.
- the projector features of this document are included in the preamble of the claim 1.
- the document DE 33 24 028 relates to a lighting apparatus to low glare by widening the optical beam, making it impossible the optical conjugation of the light source to form an image of this source in a plan to be illuminated.
- the present invention therefore aims to remedy the drawbacks mentioned above and to propose a projector to improve the homogenization of the Illuminated beach and the sharpness of the outline of the illuminated beach.
- the subject of the invention relates to a projector in particular for surgical operating theaters of the type comprising in a housing at least one lighting system comprising at least a light source from which at least two beams are formed main luminaries, on the path of each of which is placed an optical element able to form an image of the light source in a plane to be illuminated, after reflection on a mirror and passage in said optical element and through a porthole arranged in the housing.
- the optical elements are each designed to constitute a porthole with, on the one hand, a first diopter ensuring an optical conjugation of the light source on the plan to illuminate, while optimizing the correction of optical aberrations- and, on the other on the other hand, a second dioptre ensuring a multiplication of the image of the source for allow uniform illumination in the illuminated plane.
- Another object of the invention is to eliminate another disadvantage of projector described in patent FR 2 339 129, because it is intended to interpose on the path of a light beam, between a mirror and the source bright, an intermediate mirror.
- the optical paths of the beams from the intermediate mirror and the extreme mirror are of different lengths. he follows that the contributions of each beam are not identical geometrically, so that the illuminated beach does not outline uniform.
- the object of the invention is to propose, also, a projector in which the number of light beams illuminating the area is increased without. however, increase the number of optical elements and while controlling the contributions made by each beam.
- the projector according to the invention is characterized in that at least one of the optical elements constitutes a porthole for a light beam derived from the beam principal, by an intermediate mirror intermediate interposed between a mirror and the source light and passing the other part of the main beam towards the mirror associated with it, the optical element having a first diopter adapted to adjust the size of the light spot created by the beam on the plane to be illuminated.
- the optical elements are adapted so that the first diopter allows to form the image of the source light in a single common plane allowing to obtain a superposition of different beams, in order to obtain an illuminated beach with an outline uniform.
- Fig. 1 is a partial vertical section showing a first embodiment of a lighting projector according to the invention.
- Fig. 2 is a section taken substantially along lines II-II of FIG. 1.
- Fig. 3 is a side view of an exemplary embodiment of an optical element according to the invention.
- Fig. 4 is a view of the outer face of the optical element taken substantially along lines IV-IV of FIG. 3.
- Fig. 5 is a partial view in vertical section showing another alternative embodiment of a projector according to the invention.
- Fig. 6 is a schematic view showing another embodiment of the invention.
- the lighting projector I is intended, in particular, for surgical operating rooms.
- the projector I comprises, in a casing I, a lighting system 2 comprising a light source 3, from which at least two are formed, and in the example shown, four main light beams L 1 to L 4 .
- Each light beam L 1 to L 4 is formed using a condenser optical system 4 composed, for example, of two lenses 5 and 6 for concentrating a maximum of light energy in a beam of restricted section.
- the condenser optical systems 4 are placed in the immediate vicinity of the light source 3.
- the light beams L 1 to L 4 are intended to meet a reflecting mirror 8 whose reflective surface is constituted in a conventional manner, by a complex system of interferential thin layers making it possible to reflect only the visible light rays while allowing the heat rays to pass through. .
- the heat rays pass through each of the mirrors 8 and are collected by an extreme element 9 forming a radiator, so as to ensure the evacuation of heat rays.
- deflection mirrors 8 which are each inclined facing a port 11 for a passage for a light beam.
- the reflecting mirrors 8 are inclined to form convergent beams whose axes A are distributed on the generatrices of a cone whose apex S coincides with the center of the illuminated range 12 in a plane P.
- each passage window 11 is formed in an arm 13 extending radially from the center of the housing made in the form of a central housing 14.
- the central housing 14 of the housing contains the light source 3 and the condenser optical systems 4, while the radial arms 13 , four in number in the illustrated example, each comprise a passage window 11 and the associated mirror 8 ,
- each passage window 11 constitutes an optical element capable of forming an image of the light source 3 in the plane P to be illuminated.
- each passage port 11 comprises, on the one hand, a first diopter d 1 ensuring an optical conjugation of the filament of the light source 3 on the surface to be illuminated 12, while optimizing the correction of the optical aberrations and, d secondly, a second diopter d 2 ensuring a multiplication of the image of the light source 3 to allow a uniform illumination in the illuminated plane P.
- the first diopter d 1 thus constitutes a transparent surface designed to form the image of the light source in the plane to be illuminated and to eliminate, especially at the periphery of the illuminated beach, the colored halos constituting optical aberrations, such as lateral chromaticism or coma.
- the first diopter d 1 has a spherical profile.
- the second diopter d 2 provides a multiplication of the number of images of the light source 3, to obtain a homogenization of the illuminated range.
- the second diopter d 2 may consist of a multitude of small spherical, aspherical or prismatic surfaces, arranged in a matrix form, as is clear from FIG. 4 .
- each optical element 11 is constituted by a monoblock element composed of the first and second diopters. More preferably, the first diopter d 1 is constituted by the inner surface facing the associated reflecting mirror 8 , while the second diopter d 2 is formed by the outer surface directed towards the plane P to be illuminated.
- each optical element 11 has a first diopter d 1 having different powers in two directions, to ensure better conjugation of the light source according to its geometry and its positioning.
- the light source 3 is mounted so that its filament 3 1 is disposed substantially diagonally with respect to the optical axes of the different light beams L 1 to L 4.
- the inner diopter d 1 therefore has a profile that varies to take account of the position and the geometry of the light source 3 .
- the light source 3 is arranged, preferably but not exclusively, so that part of its light beam, emerging from its top, is recovered by a condenser optical system 4 to form a light beam L 5 directed towards a porthole direct passage 11 1 constituting an optical element similar to the elements 11 according to the invention.
- the direct passage window 11 1 is formed in the casing 14 of the housing being centered on the optical axis O of the projector passing through the center S of the illuminated area 12.
- the formation of five light beams L 1 to L 5 makes it possible to optimize the light output of the projector according to the invention.
- Fig. 5 illustrates another embodiment of a projector according to the invention comprising an intermediate mirror 16 interposed in the path of each main light beam L 1 to L 4 .
- Each intermediate mirror 16 is designed to let part of the beam and derive another portion directed to a passage window 11 2 according to the invention, similar in function to the optical elements 11 .
- only one intermediate mirror 16 is placed in the path of each of the light beams L 1 to L 4 .
- it may be provided to arrange, one behind the other, several intermediate mirrors 16 on each of the light beams, the light beams derived being each directed to an optical element 11 2 according to the invention.
- the optical paths of the light beams passing through the windows 11 and 11 2 are different.
- the first diopters d 1 of the optical elements 11 , 11 1 , 11 2 are adapted to form the image of the light source 3 in a single common plane P , so that the contributions of each passing beam by the portholes 11 to 11 2 are substantially identical geometrically. This results in a superposition of the spots created by each of the light beams, which allows to obtain an illuminated beach 12 with a uniform outline. It must therefore be considered that the first diopters d 1 provide in this embodiment variant, an additional function of adaptation of the size of the spots.
- the first diopters d 1 are adapted so that the spots created by each of the beams from the portholes have substantially the same size in the same plane P. It should be noted that in some applications, it may be provided that the first dioptres d 1 optical elements are adapted to form the image of the light source in at least two planes offset along the optical axis O of the projector.
- the projector I comprises a lighting system 2 composed of a single light source 3, from which a direct light beam and possibly four ( FIG 1, 2 ) or eight ( FIG. 5 ) main light beams.
- a lighting system comprising a different number of main light beams.
- the projector I comprises two lighting systems 2 and 2 ' whose light sources 3 and 3' are placed in the central housing 14, while the reflecting mirrors and the optical elements 11, 11 'of each of the lighting systems are placed in the radial arms 13. Provision may be made to produce a projector having a number of lighting systems 2, 2' greater than two and with or without one or more intermediate deflecting mirror 16 .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Elements Other Than Lenses (AREA)
- Lenses (AREA)
Description
Claims (9)
- Projecteur d'éclairage destiné en particulier aux salles d'opération chirurgicale, du type comportant dans un carter (1), au moins un système d'éclairage (2, 2') comprenant au moins une source lumineuse (3, 3') à partir de laquelle sont formés au moins deux faisceaux lumineux principaux (L1 à L4 ) sur le trajet de chacun desquels est placé un élément optique (11, 111, 112 ) apte à former, par conjugaison optique de la source lumineuse, une image de la source lumineuse dans un plan à éclairer (P), après réflexion sur un miroir (8) et passage dans ledit élément optique et à travers un hublot ménagé dans le carter,
caractérisé en ce que, pour chaque système d'éclairage (2, 2'), les éléments optiques (11, 111 , 112 ) sont aménagés pour constituer chacun un hublot de passage comportant, d'une part, un premier dioptre (d1 ) assurant une conjugaison optique de la source lumineuse (3) sur le plan à éclairer, tout en optimisant la correction des aberrations optiques en périphérie de l'éclairement dans le plan éclairé et, d'autre part, un second dioptre (d2 ) assurant une multiplication de l'image de la source pour permettre une uniformisation de l'éclairement dans le plan éclairé. - Projecteur selon la revendication 1, caractérisé en ce qu'au moins l'un des éléments optiques (112 ) constitue un hublot de passage pour un faisceau lumineux dérivé du faisceau principal, par un miroir de renvoi intermédiaire (16) interposé entre un miroir (8) et la source lumineuse (3) et laissant passer l'autre partie du faisceau principal en direction du miroir de renvoi (8) associé, l'élément optique (112 ) présentant un premier dioptre (d1 ) adapté pour régler la taille du spot lumineux créé par le faisceau sur le plan à éclairer.
- Projecteur selon la revendication 1 ou 2, caractérisé en ce que les éléments optiques (11, 111, 112 ) sont adaptés de façon que le premier dioptre (d1 ) permette de former l'image de la source lumineuse dans un plan unique commun (P).
- Projecteur selon la revendication 1 ou 2, caractérisé en ce que les éléments optiques (11, 111, 112 ) sont adaptés de façon que le premier dioptre (d1 ) permette de former l'image de la source lumineuse dans au moins deux plans décalés selon l'axe optique (O) du projecteur.
- Projecteur selon l'une des revendications 1 à 4, caractérisé en ce que chaque élément optique (11, 111 , 112 ) est constitué par un élément monobloc délimité de part et d'autre par le premier dioptre (d1 ) et le second dioptre (d2 ).
- Projecteur selon l'une des revendications 1 à 3, caractérisé en ce que chaque élément optique (11, 111, 112 ) possède un premier dioptre (d1 ) présentant des puissances différentes suivant deux directions; afin d'optimiser la conjugaison de la source lumineuse en fonction de sa géométrie et de son positionnement.
- Projecteur selon la revendication 1, caractérisé en ce que chaque système d'éclairage (2, 2') comporte dans la région centrale (14) du carter, une source lumineuse (3, 3') et au moins quatre systèmes optiques condenseurs (4) formant chacun un faisceau lumineux, et dans chacun des bras (13) s'étendant radialement de la région centrale du carter, au moins un élément optique (11, 112 ) et le miroir de renvoi (8) associé.
- Projecteur selon l'une des revendication 1 à 6; caractérisé en ce qu'il comporte au moins deux systèmes d'éclairage (2, 2') dont les sources lumineuses (3, 3') et les systèmes optiques condenseurs (4) associés sont logés dans la région centrale (14) du carter dont des bras (13) sont adaptés pour recevoir les miroirs de renvoi (8) et les éléments optiques (11,11').
- Projecteur selon la revendication 7 ou 8, caractérisé en ce que chaque système d'éclairage (2, 2') comporte un élément optique direct (111 ) constituant, selon l'axe optique (O) du projecteur, un hublot de passage pour un faisceau lumineux provenant directement de la source lumineuse après la traversée d'un système optique condenseur (4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9511719 | 1995-10-05 | ||
FR9511719A FR2739676B1 (fr) | 1995-10-05 | 1995-10-05 | Projecteur multi-hublots ameliorant l'homogeneite de la plage eclairee |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0767339A1 EP0767339A1 (fr) | 1997-04-09 |
EP0767339B1 true EP0767339B1 (fr) | 2003-04-09 |
Family
ID=9483273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402106A Expired - Lifetime EP0767339B1 (fr) | 1995-10-05 | 1996-10-03 | Projecteur multi-hublots améliorant l'homogénéité de la plage éclairée |
Country Status (5)
Country | Link |
---|---|
US (1) | US5765943A (fr) |
EP (1) | EP0767339B1 (fr) |
DE (1) | DE69627264T2 (fr) |
ES (1) | ES2196131T3 (fr) |
FR (1) | FR2739676B1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5892867A (en) * | 1995-01-17 | 1999-04-06 | Remote Source Lighting International, Inc. | Spherical multiport illuminator optic design for light guides |
US5951139A (en) * | 1997-04-17 | 1999-09-14 | Steris Corporation | Surgical light with reflector-lamps and flat reflector panels |
EP1148860A4 (fr) * | 1998-12-17 | 2002-10-09 | Getinge Castle Inc | Systeme d'eclairage concu notamment a des fins chirurgicales |
US6604843B2 (en) * | 2000-12-20 | 2003-08-12 | Hyperboloid Corporation | Searchlight with improved optical density |
FR2851028B1 (fr) * | 2003-02-06 | 2006-01-27 | Alm | Dispositif d'eclairage |
US7300176B2 (en) * | 2003-05-02 | 2007-11-27 | Irwin Kotovsky | Method and apparatus for lighting with reflection |
FR2861186B1 (fr) | 2003-10-21 | 2006-02-03 | Alm | Ensemble optique et dispositif d'eclairage correspondant. |
TW201017051A (en) * | 2008-10-17 | 2010-05-01 | Ind Tech Res Inst | Illumination system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1277110A (en) * | 1917-04-16 | 1918-08-27 | Bausch & Lomb | Operating-table illuminator. |
FR792629A (fr) * | 1935-07-17 | 1936-01-07 | Anciens Ets Barbier | Appareil d'éclairage |
DE1034116B (de) * | 1957-02-23 | 1958-07-17 | Hensoldt & Soehne M | Beleuchtungseinrichtung, insbesondere Operationsleuchte |
GB1372024A (en) * | 1970-10-07 | 1974-10-30 | Oram J A | Lighting device |
LU65808A1 (fr) * | 1972-07-27 | 1972-11-29 | ||
FR2339129A2 (fr) * | 1976-01-21 | 1977-08-19 | Angenieux P Ets | Projecteur d'eclairage |
US4068117A (en) * | 1976-01-21 | 1978-01-10 | Etablissements Pierre Angenieux | Lighting projector |
DE3324028A1 (de) * | 1983-07-04 | 1985-01-17 | Christian 8000 München Bartenbach | Leuchte mit einer lichtquelle hoher leuchtdichte |
US4912613A (en) * | 1989-02-27 | 1990-03-27 | Mdt Corporation | Cover lens for light |
-
1995
- 1995-10-05 FR FR9511719A patent/FR2739676B1/fr not_active Expired - Fee Related
-
1996
- 1996-10-03 ES ES96402106T patent/ES2196131T3/es not_active Expired - Lifetime
- 1996-10-03 EP EP96402106A patent/EP0767339B1/fr not_active Expired - Lifetime
- 1996-10-03 US US08/725,558 patent/US5765943A/en not_active Expired - Fee Related
- 1996-10-03 DE DE69627264T patent/DE69627264T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2196131T3 (es) | 2003-12-16 |
FR2739676A1 (fr) | 1997-04-11 |
FR2739676B1 (fr) | 1997-11-14 |
EP0767339A1 (fr) | 1997-04-09 |
DE69627264D1 (de) | 2003-05-15 |
DE69627264T2 (de) | 2004-03-25 |
US5765943A (en) | 1998-06-16 |
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