EP2201291B1 - Corps d'éclairage - Google Patents

Corps d'éclairage Download PDF

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Publication number
EP2201291B1
EP2201291B1 EP08802295A EP08802295A EP2201291B1 EP 2201291 B1 EP2201291 B1 EP 2201291B1 EP 08802295 A EP08802295 A EP 08802295A EP 08802295 A EP08802295 A EP 08802295A EP 2201291 B1 EP2201291 B1 EP 2201291B1
Authority
EP
European Patent Office
Prior art keywords
lens
section
light
reflector
luminaire
Prior art date
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Not-in-force
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EP08802295A
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German (de)
English (en)
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EP2201291A1 (fr
Inventor
Daniel Duchowicz
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IMC EST
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IMC EST
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Publication of EP2201291A1 publication Critical patent/EP2201291A1/fr
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Publication of EP2201291B1 publication Critical patent/EP2201291B1/fr
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    • 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
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/06—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for aircraft runways or the like
    • 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
    • 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
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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
    • F21W2131/105—Outdoor lighting of arenas or the like
    • 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
    • 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
    • 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 present invention relates to a novel headlamp lens and a thus equipped, energy-saving lamp with a defined, rectangular light field, as well as their use for predominantly professional, in particular large-scale, lighting purposes.
  • a lens is in the WO 2004/001286 disclosed.
  • This document describes a headlamp whose lens has the features of the preamble of claim 1.
  • Numerous lighting systems for large-area lighting purposes are known in the prior art. Consider, for example, the lighting of ski slopes, football stadiums, streets and tunnels, billboards, exterior facades of buildings, etc.
  • the present invention now provides a lighting system available, which thanks to sophisticated lens optics and a suitable reflector drastically reduces the amount of scattered light.
  • Such a special lens is provided in claim 1 under protection, a lamp equipped therewith in claim 5.
  • the elongated prisms of the inventive lens are integrated into the surface structure and aligned so that they have only a single free edge facing away from the lens surface.
  • prisms having a triangular or approximately triangular cross-section are to be understood as meaning those whose free edge facing away from the lens surface is rounded.
  • the invention relates to such a lens in which the peripheral, annular edge zone has a thickness which is sufficient to project beyond all surface structures arranged within the edge zone.
  • this thickened edge zone can act as a mounting base for a planar protective cover for the lens, which can prevent contamination or damage to the lens.
  • the lens according to the invention has elongated prisms on the light entry side and elongated convex curvatures on 14, and elongate prisms on the light exit side.
  • the number of prisms and / or bulges may vary, as well as the steepness of the prisms and / or the strength and width of the convex curvatures.
  • the lens according to the invention typically consists of an impact- and scratch-resistant, transparent, colorless plastic, in particular of polycarbonate (PC), but can in principle also consist of glass, in particular tempered glass.
  • PC polycarbonate
  • the invention also relates to a luminaire which is equipped with such a lens, for example a lamp with a luminous means, a housing, a reflector and the lens, wherein the reflector is rotationally symmetrical about its longitudinal axis and in the axial direction three sections of different geometry lying directly next to each other: the section of the reflector closest to the illuminant has the shape of a paraboloid of revolution with an opening at the apex, while the two adjoining sections each have the shape of a truncated cone tapering towards the lens, wherein the outer portion has a greater steepness than the preceding, middle portion and may optionally be formed in a cylindrical shape.
  • a luminaire which is equipped with such a lens, for example a lamp with a luminous means, a housing, a reflector and the lens, wherein the reflector is rotationally symmetrical about its longitudinal axis and in the axial direction three sections of different geometry lying directly next to each other: the section of the reflector closest to the illumina
  • the opening at the apex of the first reflector portion is dimensioned with respect to its diameter so as to allow the passage of a luminous means, in particular a discharge lamp, a lamp socket or cables for power supply.
  • the reflector is made of light metal, in particular aluminum, and has in the first two sections a highly polished or mirrored and in the outer, third, conical or cylindrical portion a roughened inner surface, which causes this part of the reflector no optical contribution to the diffraction and / or refraction of the light rays and also should not afford.
  • it serves more as a kind of buffer zone, within which the lens position along the longitudinal axis of the reflector (focal line) can be slightly varied.
  • the lens may be releasably secured to the lamp housing and optionally rotatably mounted in the lamp housing.
  • the invention further relates to the use of a lens according to any one of claims 1 to 4, for generating a rectangular light field.
  • the invention further relates to the use of such a luminaire for illuminating large areas such as public spaces, recreation parks, sports fields, football stadiums, ski slopes, sports and industrial halls, car parks, car parks, traffic areas of all kinds, tunnels, building facades, airports, seaports, military areas, Billboards, or exterior facades of buildings.
  • the luminaire according to the invention can also be used as a component of optical presentation systems such as projectors and projectors, as a photo light, or as a special luminaire in medical facilities, in particular as a surgical light or dental light, or in museums for illuminating paintings and other exhibits.
  • a primary purpose of the luminaire according to the invention is to diffract and concentrate the light beams emitted by a light source in such a way that a rectangular light field can be generated on an opposite, planar surface with a round spotlight cone.
  • Their main advantage is that the scattered light component and thus the unwanted loss of light, typically less than 10%, so that at least 90% of the remaining, emerging from the lens light are radiated to the target to be illuminated in the form of a rectangular light field.
  • the invention is further characterized by the fact that the light field generated, starting from the bright center, loses light intensity only slightly in the direction of the edge and only has a significantly lower light intensity deviating therefrom in the edge region itself.
  • This makes it possible to achieve a continuous band of light of approximately constant brightness if the luminaires according to the invention are placed next to one another in such a way that the edge regions of the radiated light fields overlap one another.
  • the number of luminaires can be reduced compared to conventional luminaires, which in particular significantly reduces maintenance costs, electricity costs, infrastructure and assembly costs.
  • FIG. 4 schematically illustrated lamp 1 with a light source 2, a lamp housing 3, a reflector 4 and a round lens system. 5
  • the light yield is significantly influenced by the geometry and surface finish of the mirrored reflector, while for the luminous effect primarily the geometry of the lens is crucial.
  • the lens 5, 5a according to the invention which has a circular shape, has a different surface geometry on the light entry side 51, 51 a than on the light exit side 52.
  • the light entry side here means the side of the lens which, when the lens is installed in the luminaire according to the invention, faces the light source or the illuminant.
  • the light exit side is therefore to be understood as meaning the opposite side of the lens, that is to say the side which, when the lens is installed in the inventive device, is the one which has been used. Light facing the object to be illuminated.
  • the lens 5, 5a contains at the edge of an annular rim zone 53 without special surface structure.
  • An annular section 511 adjoins this edge zone in the direction of the lens center on the light entry side 51, 51 a, which has a surface structure of mutually parallel rows of elongated, bead-like elevations or bumps, wherein the convexities are convex in nature and transverse to Longitudinal axis of the respective elongated elevations run.
  • the thus convexly curved, elongated elevations or vaults are similar in plan view of the shape of a blind with convexly curved plastic slats in maximum closing or shading position.
  • annular portion 521 having a surface structure of mutually parallel rows of also elongated, tapered prisms with triangular cross-section, followed by a central, circular surface-shaped portion with a smooth surface , It consists of two halves of equal size, which seamlessly merge into one another at an imaginary cutting line 524 running centrally through the circular area, where they have their smallest thickness.
  • the cutting line is present in a widened form as a band-shaped portion, which separates the two semicircular-shaped sections from each other and at the same time with each other.
  • the two circular surface halves are arranged so that the imaginary cutting line or the band-shaped lens section run parallel to the prism rows on the same side.
  • the planar surfaces of these two semicircular-shaped lens sections 522, 523, 522a, 523a do not lie in the central lens plane or parallel to it, but rise in the form of slant planes in the centrifugal direction, ie in a direction perpendicular to the imaginary cutting line, since the two sections 522, 523, 522a, 523a become thicker towards the edge and assume a wedge-shaped form.
  • planar, non-domed surfaces of the two semicircular lens sections 522, 523 form an outwardly-open, obtuse angle with respect to the lens plane, such that the circular lens-shaped section appears to have a kink from the side.
  • two kinks result in this approach.
  • the parallel rows of the convexes of the portion 511 are twisted at an angle of 90 degrees to the parallel ones Rows of elongate prisms of section 512 are disposed on the same lens side.
  • the prism rows have the same orientation on the light entry side and the light exit side (see cross sections in FIG Figs. 9A and 9B ).
  • the reflector 4 is rotationally symmetrical about its longitudinal axis and constructed in the axial direction of three sections 41, 42, 43 of different geometry. As a result, a large part of the light emitted by the light source within the reflector in lateral directions is conducted to the lens.
  • the reflector is configured such that the portion 41 closest to the light source has the shape of a paraboloid of revolution and has an opening at the apex, while the adjoining central portion 42 and also the subsequent outer portion 43 are outwardly outward ie have in the direction of the lens, conically flared truncated cone, however, wherein the outer portion 43 has a steeper conical shape than the middle.
  • this outer portion may take the form of a cylinder.
  • the opening at the apex of the reflector is typically sized to allow the passage of a light source, such as a high pressure discharge lamp, a lamp socket, or power supply cables.
  • a light source such as a high pressure discharge lamp, a lamp socket, or power supply cables.
  • the reflector 4 is also typically made of light metal, in particular of aluminum, and has a highly polished or mirrored in the inner portions 41 and 42 and a roughened inner surface in the outer portion 43.
  • the roughened surface of the outer portion prevents this reflector portion from providing an optical contribution to the reflection and / or diffraction of the light emitted by the illuminant.
  • the middle section is quite different: it is also conical, but with a flatter conical shape, and has as its function the task of diffracting and total reflecting the lens from the lens to the rows of prisms acting as diffusers to redirect light directed back into the reflector so that the light focused by the paraboloidal part of the reflector at the focal point in the lens plane is distributed to the largest possible focal surface before it leaves the lens.
  • the focal surface lies exactly in the lens plane.
  • This lens geometry in conjunction with the specially matched reflector also causes as much light as possible to leave the lens via targeted internal total reflection in the lens optics, and not just by material-dependent diffraction. This makes it possible to uniformly distribute the light intensity of the emitted light over a larger area of the light field.
  • the lens 5 is movable, i. rotatably mounted on the lamp housing 3, so that the light field can also rotate by simply rotating the lens in the lens plane.
  • the lens itself is preferably made of a suitable impact and scratch resistant, transparent, colorless plastic such as polycarbonate, or optionally of tempered glass, so that it does not require any special protection against mechanical damage per se. Nevertheless, it may be advantageous for some purposes, the lens nor a planar protective glass upstream, for example, to prevent contamination or damage to the lens optics and to facilitate cleaning of the lamp. This is especially in the in the FIGS. 6 to 8 illustrated embodiment with thickened edge zone 53 particularly well possible.
  • a rectangular field of 35 ⁇ 10 m can be illuminated almost uniformly, with it does not need 300 watts as with conventional lights but only a maximum of 30-60 watts.
  • FIG Fig. 5 The difference between the area illuminated by a standard street lamp with a 120 degree optic and the area illuminated by a luminaire according to the invention with a 1 60 degree optic when the luminaire is mounted at a height of 9 m above ground (eg roadway) is shown in FIG Fig. 5 illustrated.
  • the values given there are to be regarded as approximations and may deviate by about 10%.
  • light angles of 160 ° are no longer to produce the same quality and economy as light angles of 130 ° and below.
  • the light angles which can preferably be generated with the optics according to the invention are in the range from 30 to 130 degrees, in particular from 60 to 120 degrees.
  • the entire lens optics, including reflector, can be incorporated into various types of housing, e.g. into the lamp housings of flood lights, street lights and special lights of all kinds.
  • the luminaire according to the invention is particularly suitable for illuminating large areas, e.g. public spaces, recreational parks, sports fields, football stadiums, ski slopes, sports and industrial halls, car parks, car parks, traffic areas of all kinds, tunnels, airports, seaports, military areas, billboards, exterior facades of buildings, etc. It can also be part of optical presentation systems such as projectors and To be beamers. It can also be used as a photo light for professional photographers or as a special light in medical facilities, such as surgical or dental lighting, or in museums for uniform illumination of paintings and other exhibits.
  • An object of the invention is to illuminate very large areas with a very low power consumption. Savings of up to 80% compared to conventional luminaires with metal halide, mercury, sodium high-pressure or sodium low-pressure lamps are possible with the luminaire according to the invention.
  • the lens is preferably made of PC (polycarbonate), but may also consist of glass or other transparent, translucent materials, in which case, however, the lens geometry is to be adapted to the light refractive indices changed relative to the PC.
  • PC polycarbonate
  • the lens optics on the example of a typical luminaire according to the invention with a scattering angle of 60 ° x 130 ° is shown in the figures Fig. 1-3 and Fig. 10 shown.
  • the lens 5, 5a has a total diameter of 190 mm (distance k in Fig. 7B and Figure 10 ), with the structured surface lens part occupying only 180 mm ( 7B . Fig. 10 , Distance i).
  • the rest corresponds to the edge zone 53 in FIG Fig. 1, Fig. 2 and Fig. 3 , which consequently has a width of 5 mm.
  • the inner lens array consisting of the light entrance side portion 512 and the light exit side section parts 522 and 523 and 522a and 523a, has a diameter of 120 mm (distance h), but may vary slightly depending on the desired scattering angle.
  • the outer annular lens array consisting of the sections 511 (light entrance side) and 521 (light exit side), a width of 30 mm, but may also vary depending on the variation of the inner lens array.
  • the maximum thickness of the lens measured from the prism tip or prism edge on the light entry side to the prism tip or prism edge on the light exit side, is 10.7 mm ( Fig. 10 , Distance m) to 12m ( Fig. 7B , Distance M), the thickness of the marginal annular region 53 is 3.8 mm ( Fig. 10 , Distance n) to 9.5mm ( Fig. 7B , Distance N).
  • the inner lens array 512 on the light entrance side exactly 23 parallel prism rows
  • the outer annular lens array 521 on the light exit side has exactly 38 parallel prism rows.
  • the annular portion 511 on the light entrance side has a surface structure of exactly 14 rows arranged parallel to each other from transversely to its longitudinal axis convexly curved, elongated, louver-like vaults.
  • the associated reflector at its open end, ie at the outer end A of the reflector portion 43, a lens diameter adapted to the clear width of 190 mm (distance a in Fig. 4B ) and at the end B of section 42 one of 182 mm (distance b).
  • the opening at the vertex C of the reflector has a diameter of 30 mm (distance c).
  • the total length of the reflector expressed by the length of its focal axis or focal line passing through the focal point, is 130 mm (distance d) from the vertex C to the point of intersection of the focal plane with the plane A at the end of the outer reflector section 43.
  • the distance from the vertex C to the center D of the light source 2 is 31 mm (distance e), the distance from the vertex C to the intersection of the focal line with the plane B at the end of the central reflector portion 42 is 94.5 mm (distance f), and the distance from the center D of the light source to the intersection of the focal line with the plane A at the end of the outer reflector portion 43 is 91 mm (distance g).
  • the desired light distribution is created by an interaction of the two lens sides, additionally supported by the reflector, whose dimensions can also vary slightly.
  • the lens optic according to the invention is intended above all for the use of high-pressure discharge lamps, in particular of commercially available CDM and CPO lamps, but can in principle also be combined with other lamps.
  • the lens described above produces a rectangular light image with a scattering angle of about 130 ° x 60 ° at an angle of inclination of 90 ° to the illuminated flat surface. This corresponds to an effective light field of approx. 32m x 10m with a light point height of 10m.
  • Lens variations with slightly modified lens patterns serve to achieve other light scattering angles, such as listed in Table 1 below. To achieve these effects, the angles of the prism-like elevations and the diameter and the inclination of the individual lens elements, and optionally the The width and thickness of the curvature of the convex, bead-like bulges varies.
  • the pictures Fig. 6 to 9 show a lens variant with thicker edge portion 53a, the light exit side protrudes beyond the prism edges, so as to allow, for example, the attachment of a transparent, planar protective cover directly on the lens.
  • the two oblique halves 522a and 523a of the light exit side, inner lens array - unlike in the embodiment described above - do not directly adjoin one another via an imaginary cutting line 524, but they are projected through a planar lens portion 524a which appears rectangular in plan view separated from each other. From the cross-sectional views of FIGS. 7A, 7B . 9A and 9B the structures of this lens variant 5a are also clearly visible.
  • the number of rows of prisms light entrance side 23, light exit side 38 and the number of light entrance side convex curvatures 14.
  • the two circular surface halves are arranged so that the between them, rectangular, plane lens portion 524 a with its longitudinal sides parallel to the prism rows of extends to the circular surface subsequent annular portion of the same lens side.
  • the lenses according to the invention are made in one piece, irrespective of their lens geometry, ie they are not glued together from individual lens parts, but from a cast, produced by means of corresponding casting molds.
  • the general reflector geometry described above can be left unchanged for all lens variations.
  • the reflector length may vary by up to 14mm using the lens size specified above.
  • lens variations of 30 ° x 60 °, 60 ° x 90 °, 60 ° x 130 °, 60 ° x 150 °, 40 ° x 130 ° or 40 ° x 150 ° produce. Further variations and combinations of light scattering angles and the light spread that can be achieved in meters, depending on the distance of the luminaire from the illuminated surface, are shown in Table 1.
  • high-pressure discharge lamps with a power of 250 W can be replaced by those with a power of only 70 W or optionally even 35 W with equally good visibility of the illuminated object.
  • Lamp 3 lamp housing 4 reflector 41 parabolic reflector section 42 first conical reflector section 43 second conical reflector section 5, 5a lens 51, 51a Light entrance side of the lens 52, 52a Light exit side of the lens 53, 53a circular, unstructured edge zone of the lens 511 annular lens section on the light entry side, with a louver-like surface structure of convexly curved, bead-like curvatures 512 central, circular-surface-shaped portion light inlet side, with a surface structure of parallel rows of elongated, tapered prisms with approximately triangular cross-section 521 annular portion on the light exit side, with a lens structure of mutually parallel rows of elongated, tapered prisms with triangular cross-section 522, 523 522a, 523a wedge-shaped semicircular surfaces of the light exit side central, circular area-shaped portion 524, 524a imaginary cutting line or band-shaped lens section between the wedge-shaped semicircular surfaces, light exit side

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

Claims (13)

  1. Lentille de projecteur lumineux (5, 5a), sous la forme d'un disque circulaire, convenant pour produire un champ lumineux rectangulaire sur une surface plane, avec une face d'entrée de lumière (51, 51a), à tourner vers un moyen d'éclairage, ayant une structure de surface afférente, et une face de sortie de lumière (52, 52a), opposée à la face d'entrée de lumière, ayant une structure de surface afférente, caractérisée en ce que la lentille (5, 5a) présente les caractéristiques suivantes :
    a) côté entrée de la lumière, un tronçon central (512), en forme de surface circulaire, avec une structure de surface composée d'une pluralité de prismes allongés, couvrant la surface globale chaque fois disponible, disposés parallèlement les uns aux autres, ayant une section transversale à peu près triangulaire, et des vallées de cuvettes à peu près en forme de U, disposées en position intermédiaire,
    b) côté entrée de la lumière, directement en raccordement au tronçon (512) en forme de surface circulaire et entourant celui-ci sur toute son étendue, un tronçon (511) en forme d'anneau de cercle, avec une structure de surface composée d'une pluralité d'incurvations allongées, du type de persiennes, avec une incurvation convexe par rapport à leur axe longitudinal, disposées parallèlement les unes aux autres, couvrant l'ensemble de la surface en anneau de cercle chaque fois disponible,
    c) côté sortie de la lumière, un tronçon central, en forme de surface circulaire, avec deux moitiés (522, 523, 522a, 523a) de taille identique, en forme de surfaces en demi-cercles, à section transversale radiale cunéiforme, soit directement limitrophes l'une à l'autre le long d'une ligne de coupe (524) imaginaire, soit espacées l'une de l'autre par un tronçon de lentille (524a) en forme de bande, présentant leur emplacement le plus mince dans la zone de la ligne de coupe imaginaire et, à partir de là, devenant plus épais en évoluant en direction centrifuge, de manière que leur surfaces planes constituent des plans inclinés, montant en direction du bord de lentille ;
    d) côté sortie de la lumière, directement en raccordement au tronçon en forme de surface circulaire et entourant celui-ci sur toute son étendue, un tronçon (521) en forme d'anneau de cercle, avec une structure de surface composée d'une pluralité de prismes allongés, couvrant la surface globale en forme d'anneau de cercle chaque fois disponible, disposés parallèlement les uns aux autres, ayant une section transversale triangulaire, et des vallées de cuvettes à peu près en forme de V, disposées en position intermédiaire, ainsi que
    e) côté entrée de la lumière et côté sortie de la lumière, directement en raccordement aux tronçons en forme d'anneaux de cercle et entourant ceux-ci sur toute leur étendue, une zone de bordure (53, 53a) en forme d'anneau de cercle, périphérique, ne présentant pas de structure de surface ;
    où, côté entrée de la lumière, les incurvations allongées, du type de persiennes, du tronçon (511) en forme d'anneau de cercle sont tournées d'un angle de 90 degrés par rapport aux prismes allongés du tronçon (512) en forme de surface circulaire, sur le même côté, sachant que, en outre, côté sortie de la lumière, laligne de coupe (524) imaginaire ou le tronçon de lentille (524a) en forme de bande, s'étend entre les moitiés de tronçons en forme de surfaces en demi-cercles, dans la même direction que celle des prismes allongés du tronçon en forme d'anneau de cercle sur ce côté, et les prismes allongés, sur le côté entrée de la lumière, et ceux situés sur le côté sortie de la lumière sont disposés en s'étendant dans la même direction.
  2. Lentille selon la revendication 1, caractérisée en ce que la zone de bordure (53, 53a) en forme d'anneau de cercle, périphérique, présente une épaisseur suffisant pour ressortir de toutes les structures de surface disposées à l'intérieur de la zone de bordure.
  3. Lentille selon la revendication 1 ou 2, caractérisée en ce qu'elle présente, côté entrée de la lumière, 23 prismes allongés et 14 incurvations convexes allongées et, côté sortie de la lumière, 38 prismes allongés.
  4. Lentille selon l'une des revendications 1 à 3, caractérisée en ce que les prismes allongés comprennent des prismes allongés, ou sont composés de prismes allongés, dont l'arête libre, s'écartant de la surface de lentille, est arrondie.
  5. Lentille selon l'une des revendications 1 à 4, caractérisée en ce qu'elle est composée de verre durci ou d'une matière synthétique résistant aux chocs et aux rayures, transparente, incolore, en particulier de polycarbonate.
  6. Luminaire (1) équipé d'une lentille (5, 5a) selon l'une des revendications 1 à 5.
  7. Luminaire selon la revendication 6, avec un moyen d'éclairage (2), un boîtier (3), un réflecteur (4) et la lentille (5, 5a), caractérisé en ce que le réflecteur (4) est d'une configuration répondant à une symétrie de rotation autour de son axe longitudinal et est constitué, en direction axiale, de trois tronçons (41, 42, 43) à géométrie différente, le tronçon (41), placé le plus près du moyen d'éclairage, du réflecteur (4), présente la forme d'une paraboloïde de rotation et présente une ouverture au point sommet, et les deux tronçons (42, 43), s'y raccordant, présentent chacun la forme d'un tronc de cône allant en s'élargissant de manière conique en évoluant vers la lentille, le tronçon extérieur (43) étant d'une plus grande inclinaison par rapport au tronçon médian (42), précédent, et pouvant en option également être conformé en cylindre.
  8. Luminaire selon la revendication 6 ou 7, caractérisé en ce que l'ouverture ménagée au sommet du premier tronçon de réflecteur (41) est dimensionnée pour permettre le passage d'un moyen d'éclairage, en particulier d'une lampe à décharge, d'une douille de lampe, ou de câbles servant à l'alimentation en courant électrique.
  9. Luminaire selon l'une des revendications 6 à 8, caractérisé en ce que le réflecteur (4) est fabriqué en métal léger, en particulier en aluminium, et présente, dans les deux premiers tronçons (41, 42) une surface intérieure polie pour obtenir un poli spéculaire ou argentée et, dans le troisième tronçon (43), conique ou cylindrique, une surface intérieure rendue rugueuse.
  10. Luminaire selon l'une des revendications 6 à 9, caractérisé en ce que la lentille (5, 5a) est fixée de manière désolidarisable sur le boîtier de lampe (3) et, de préférence, est montée à rotation dans le boîtier de lampe (3).
  11. Utilisation d'une lentille selon l'une des revendications 1 à 5, pour produire un champ lumineux rectangulaire.
  12. Utilisation d'un luminaire selon l'une des revendications 6 à 10, pour éclairer de grandes surfaces, tels que des lieux publics, de parcs de détente, des lieux de sport, des stades de football, des pistes de ski, des halls de sport et d'industrie, des parcs de stationnement, des bâtiments de stationnement, des surfaces de circulation de tout genre, des tunnels, des façades de bâtiments, des aéroports, des ports maritimes, des zones militaires, des panneaux publicitaires, ou de façades extérieures de bâtiments.
  13. Utilisation d'un luminaire selon l'une des revendications 6 à 10, entant que composant de systèmes de présentation optique, tels que des projecteurs et des transmetteurs d'information par faisceau, en tant que luminaire pour la photographie ou en tant que luminaire spécial dans des dispositifs médicaux, en particulier sous forme de lampe pour salle d'opération ou de lampe pour dentiste, ou dans des musées, pour éclairer de peintures et d'autres pièces exposées.
EP08802295A 2007-09-17 2008-09-17 Corps d'éclairage Not-in-force EP2201291B1 (fr)

Priority Applications (1)

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EP07018186 2007-09-17
US97462207P 2007-09-24 2007-09-24
PCT/EP2008/007770 WO2009036964A1 (fr) 2007-09-17 2008-09-17 Corps d'éclairage
EP08802295A EP2201291B1 (fr) 2007-09-17 2008-09-17 Corps d'éclairage

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EP2201291B1 true EP2201291B1 (fr) 2011-06-15

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2288849B1 (fr) 2008-06-11 2013-10-30 Koninklijke Philips N.V. Système luminescent produisant un faisceau à largeur ajustable
WO2010010494A1 (fr) * 2008-07-24 2010-01-28 Koninklijke Philips Electronics N.V. Luminaire doté de plusieurs unités d’éclairage
US8313218B2 (en) 2009-05-25 2012-11-20 Lg Innotek, Co., Ltd. Gap member, lens and lighting device having the same
EP2863246B8 (fr) * 2009-05-25 2017-07-12 LG Innotek Co., Ltd. Dispositif d'éclairage avec élément d'espacement et une lentille
EP2261549A1 (fr) * 2009-06-01 2010-12-15 Mammut Sports Group AG Diffuseur fixable a l'usage d'une lampe portable
US20130286653A1 (en) * 2012-04-30 2013-10-31 Qualcomm Mems Technologies, Inc. Multi-beam light engine
EP2932932B1 (fr) * 2014-04-14 2019-03-06 Kaltenbach & Voigt GmbH Lampe médicale
CN107062156B (zh) * 2017-05-31 2023-07-21 浙江光锥科技有限公司 洗墙灯透镜、具有该洗墙灯透镜的发光模块和洗墙灯

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EP1148860A4 (fr) * 1998-12-17 2002-10-09 Getinge Castle Inc Systeme d'eclairage concu notamment a des fins chirurgicales
SE0201961D0 (sv) * 2002-06-25 2002-06-25 Labino Patent Ab Belysningsarmatur
FR2875578B1 (fr) * 2004-09-21 2006-12-15 Valeo Vision Sa Feu de signalisation, en particulier pour vehicule automobile
CN101263337A (zh) * 2005-10-19 2008-09-10 马丁专业股份有限公司 光学组件的改进

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ATE513164T1 (de) 2011-07-15
EP2201291A1 (fr) 2010-06-30
WO2009036964A1 (fr) 2009-03-26

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