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EP4176201B1 - Optische anordnung für einen projektor und projektor mit solch einer optischen anordnung - Google Patents

Optische anordnung für einen projektor und projektor mit solch einer optischen anordnung Download PDF

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Publication number
EP4176201B1
EP4176201B1 EP21743554.4A EP21743554A EP4176201B1 EP 4176201 B1 EP4176201 B1 EP 4176201B1 EP 21743554 A EP21743554 A EP 21743554A EP 4176201 B1 EP4176201 B1 EP 4176201B1
Authority
EP
European Patent Office
Prior art keywords
lenses
grid
light sources
light
projector
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.)
Active
Application number
EP21743554.4A
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English (en)
French (fr)
Other versions
EP4176201A1 (de
EP4176201C0 (de
Inventor
Yvan Peard
Cyril UNION
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.)
Ayrton SAS
Original Assignee
Ayrton SAS
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.)
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Publication date
Application filed by Ayrton SAS filed Critical Ayrton SAS
Publication of EP4176201A1 publication Critical patent/EP4176201A1/de
Application granted granted Critical
Publication of EP4176201B1 publication Critical patent/EP4176201B1/de
Publication of EP4176201C0 publication Critical patent/EP4176201C0/de
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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
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
    • 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
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
    • 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
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F21Y2105/18—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an optical assembly intended for a projector, comprising an optical element provided with a set of lenses, said lenses being adapted to cooperate with a first plurality of light sources, such as light emitting diodes (LED), of said projector, said lenses being adapted to generate primary light beams and being spaced from each other using inter-lens spaces, said assembly also comprising a grid making it possible to fill at least a portion of said inter-lens spaces of said set of lenses and being adapted to cooperate with a second plurality of light sources, such as light emitting diodes (LEDs) of said projector, wherein said grid is adapted to generate secondary light beams.
  • a first plurality of light sources such as light emitting diodes (LED)
  • LEDs light emitting diodes
  • the optical assembly for a projector according to the invention is particularly suitable for projectors comprising a plurality of light sources, such as light-emitting diodes (LED), the projectors being adapted to generate primary light beams using said sources luminous, and also comprising a set of lenses.
  • LED light-emitting diodes
  • Primary light beams having characteristics imposed by the user, can be obtained on the one hand thanks to the shape of the lenses and, on the other hand, thanks to the distance between the lenses and the light sources.
  • the lenses present within a set of lenses are spaced from each other using inter-lens spaces.
  • the lenses can be individually attached in a support structure or interconnected to form a “one-piece” lens assembly.
  • Projectors whose surface is covered with a certain quantity of individual lenses are known in the prior art.
  • the relatively numerous inter-lens spaces of said projectors allow the use of secondary light sources used to obtain diffused light using secondary light sources.
  • the term “signage effect” refers to this type of lighting effect. In English, the term “signage” is used to refer to said light effect.
  • An example of a projector using secondary light sources is given by the document US 2020/088382 A1 .
  • the object of the present invention consists of proposing an optical assembly for a projector whose optical element is used with a set of lenses, said lenses being spaced from each other thanks to interspaces. lenses, and in which the area required for the inter-lens spaces is limited compared to the area required for the lenses.
  • the grid is adapted to surround each lens in the lens assembly.
  • the grid comprises a transparent plastic material.
  • the grid on the face directed towards the second plurality of light sources, comprises an integrated diffusing texture making it possible to obtain split secondary light beams.
  • the lenses are shaped to together form a disk.
  • the optical element comprises at least two modules, each module comprising at least one lens.
  • the support element comprises an opaque material, preferably black material, and comprises orifices adapted to embed the light sources of said second plurality of light sources, the support element forming thus a mask for said light sources.
  • the invention relates to a projector comprising a first plurality of light sources, such as LEDs, adapted to cooperate with a set of lenses in order to generate primary light beams, said projector lenses being spaced apart from each other using inter-lens spaces, and a second plurality of light sources, such as LEDs, adapted to cooperate with a grid present at said inter-lens spaces in order to generate a secondary light effect, the projector comprising the optical assembly according to the invention.
  • a first plurality of light sources such as LEDs
  • FIG. 1 shows part of the optical assembly 100 according to the invention. For reasons of clarity, part of said optical assembly 100 is not visible in order to show more clearly the different parts constituting the optical assembly 100.
  • the optical assembly 100 comprises, first of all, an optical element 10 (see Figure 4 ) provided with a set of lenses 20. As shown in the figure 1 , the optical assembly 100 has thirty-seven lenses 20 distributed around a central lens 20 which is respectively surrounded by three concentric circles of 6, 12 and 18 lenses 20.
  • the optical element comprises a first module 11 and a second module 12.
  • the module 11 is composed of a total of seven lenses 20 including the central lens 20, a first lens of the first circle, two lenses of the second circle and three lenses of the third circle.
  • Module 12 comprises six lenses 20 including a first lens of the first circle, two lenses of the second circle and three lenses of the third circle.
  • modules 13, 14, 15, 16 (not visible on the figure 1 ), similar to module 12, are necessary to complete the optical element 10 and finally obtain the thirty-seven lenses 20 mentioned above.
  • the two modules 11 and 12 are described in more detail on the figure 2 And 3 . All modules 11, 12, 13, 14, 15 and 16 are shown on the Figure 4 .
  • Each lens 20 of the optical element 10 is adapted to cooperate with a light source forming part of a first plurality of light sources.
  • Power light-emitting diodes LEDs are light sources particularly suited to the use of the optical assembly 100 according to the invention. By electronic control, the user can manage the intensity and color produced by said light-emitting diodes (LED).
  • LEDs light-emitting diodes
  • the combination of light-emitting diodes (LEDs) and lenses makes it possible to obtain light beams at the output of the projector using the optical assembly 100.
  • the lenses 20 of the optical element 10 are spaced from each other using inter-lens spaces, said spaces being clearly visible on the figure 4 .
  • the inter-lens spaces, or at least part of them are filled using a grid 30, which grid 30 is shown in detail on the figures 6 , 7 and 8 .
  • the grid 30 is made using a transparent material, for example a transparent plastic material, such as transparent polycarbonate.
  • the grid 30 is adapted to surround each lens 20 in the optical element 10.
  • the width of the elements of the grid 30 surrounding the lenses 20 is approximately 5 mm.
  • the height of the elements of the grid 30 surrounding the lenses 20 varies in order to best fill the inter-lens spaces.
  • a set of lenses can, for example, form either a rectangle, a square, or any other suitable shape.
  • the shape of the lenses 20 can be adapted to the overall shape of the projector. To obtain, for example, a square shape, the lenses 20 can be square in shape.
  • the optical assembly 100 also includes a support element 40 adapted to support all of the lenses 20 at the inter-lens spaces.
  • the grid 30 and the support element 40 are adapted so that the branches, respectively constituting the grid 30 and the support element 40, are located at the level of the inter-lens space of the lenses 20.
  • the shape of the grid 30 and the support element 40 allows all of the lenses 20 to generate primary light beams whose light sources are present in a projector without, however, the presence of said grid 30 and the support element 40 is an obstacle to the passage of the light generated using a first plurality of light sources.
  • the grid 30 and the support element 40 are adapted to fit onto the opposite faces of the optical element 10 and thus fix all of the lenses 20 between the grid 30 and the support element 40 , thus obtaining the optical assembly 100 according to the present invention.
  • the main aim of the invention consists of using the surface of the output of a projector, occupied by the inter-lens spaces of the optical assembly 100, in order to create a secondary lighting effect, complementary to the primary lighting beams generated by the lenses 20, using the grid 30 and a second plurality of light sources 61 present in a projector.
  • Signage light-emitting diodes are light sources particularly suited to forming this second plurality of light sources 61.
  • the second plurality of light sources 61 is positioned in the projector so that each light source of said second plurality of light sources 61 is located inside an orifice 46 provided for this purpose within the support element 40.
  • the different orifices 46 provided to accommodate each of the light sources are more clearly visible on the figure 5 .
  • the light generated by said second plurality of light sources 61 is emitted in the direction of the grid 30 and is diffused, in the form of a secondary light effect and complements the primary light beams emitted by the lenses 20.
  • second light effect is used within the present description to refer to the second plurality of light sources 61 but also to refer to the light effect produced using the light sources 61, preferably under the form of light-emitting diodes (LED) for signage.
  • Said second light effect is a diffused light which emerges from the surface of the grid 30.
  • a projector making it possible to obtain primary light beams on the one hand and, on the other hand, diffused light as described above offers the possibility of obtaining light effects from a projector provided with an optical assembly 100 according to the invention, which light effects could not be obtained using the projectors forming part of the prior art.
  • a user can use, initially, the optical assembly 100 for the purpose of obtaining primary light beams through the combination of a first plurality of light sources and lenses 20.
  • the user can use the second plurality of light sources 61 in combination with the grid 30 in order to generate diffused light over all, or part, of the surface of the optical assembly 100.
  • combination of the second plurality of light sources 61 and the grid 30 can make it possible to generate static light effects where the light sources are turned on or off on a part of the optical assembly 100.
  • the light sources of said second plurality of light sources 61 can be lit from sequential manner making it possible to generate dynamic light effects, which can form spiral circles or complex shapes on the upper face of the grid 30.
  • the user can, if he wishes, modify either the intensity of the light sources or the color of said light sources, or both, and this in a gradual manner. Thanks to such management of light sources, “liquid” type generated light effects can be obtained, which means that the transitions and changes generated on said light effects are soft and gradual.
  • the second printed circuit has the same shape as grid 40.
  • LEDs light emitting diodes
  • the user can not only change the intensity but also the color of the light generated using the light sources. If we take into account the possibility of controlling the switching on of the different light sources, the intensity and the color obtained by each light source, the user has a wide variety of possibilities to generate specific and new lighting effects .
  • FIG 2 illustrates in more detail the first module 11 and the second module 12 of the optical element 10.
  • the first module 11 comprising six lenses 20 forming part of the different circles of lenses visible on the figure 1 as well as the central lens 20 of said optical element 10.
  • the module 12 comprises, for its part, six lenses 20.
  • each of the two modules is provided with fixing elements 17 in the shape of “ears”. Said ears of the fixing elements 17 are optional and can therefore be used to fix modules 11 and 12 on a support using, for example, screws.
  • FIG. 3 represents a perspective view of the lower face of the modules 11 and 12, each of which comprises protuberances in the form of a longitudinal light guide 18.
  • Said longitudinal light guides 18 are located at the level of the inter-lens spaces present on the upper face of the modules 11 and 12. It should be noted that the longitudinal light guides 18 have an important effect in guiding the light generated by the light sources of the second plurality of light sources of a projector towards the output of said projector.
  • the longitudinal light guides 18 are provided with a converging profile, said profile being adapted to channel the useful light produced by said light sources of the second plurality of light sources towards the surface of the inter-lens optical element. This operation is illustrated in more detail on the Figure 9 .
  • the light sources used for the second plurality of light sources are provided with very small light-emitting diodes (LEDs).
  • LEDs light-emitting diodes
  • LEDs light emitting diodes of this type, namely very small in size, make it possible to generate light effects with a very smooth transition.
  • FIG 4 illustrates the optical element 10 of the optical assembly 100 in its entirety.
  • FIG 4 shows that after assembling the different modules, a single optical element 10 is obtained provided with a total of 37 lenses and inter-lens spaces visible on said Figure 4 .
  • the optical element 10 in one piece, for example a single piece of transparent plastic, such as transparent polycarbonate.
  • transparent plastic such as transparent polycarbonate.
  • different modules 11 and 12 are used in order to limit the size of the mold to be used to produce said modules.
  • FIG 5 represents the support element 40 adapted to support, on its lower face, the optical element 10 as shown in the figure 4 .
  • the support element 40 comprises, in its entirety, four concentric rings, 41, 42, 43, 44, interconnected by means of radial branches 45.
  • each orifice 46 is adapted to accommodate a light source of a second plurality of light sources present in a projector.
  • FIG 9 clearly illustrates the constructive aspects of the assembly composed of the light sources and the support element 40.
  • the Figure 5 shows that in its upper face, the different elements of the support element 40 have the shape of a gutter. Said gutters are adapted to receive, together, the plurality of longitudinal light guides 18 visible on the Figure 3 . First of all, this offers the possibility of correctly positioning and fixing the lower face of the optical element 10 to the upper face of the support element 40.
  • FIG. 6 represents the grid 30 in its entirety.
  • the basic shape of said grid 30 is comparable with the basic shape of the support element 40.
  • the grid 30 comprises four concentric circles 31, 32, 33, 34 interconnected using branches 35.
  • On its lower face, as shown on the Figure 7 the grid 30 is essentially flat.
  • On its upper side, as shown on the Figure 6 the grid 30 has a wavy shape making it possible to better cover the lenses in the inter-lens spaces, as illustrated in the figure 1 .
  • the grid 30 is provided with circular elements 31 making it possible to cover the exterior of the lenses 20 located in the widest circle. This means that the circular element 31 is not used to fill inter-lens spaces but to fill spaces around the lenses located furthest outside of the optical assembly 100 of the invention.
  • FIG 7 represents the lower face of the grid 30. At a certain distance, it appears that the lower face 30, illustrated on the figure 7 , is essentially flat. According to a particular embodiment, illustrated on the figure 7 and shown in more detail on the figure 8 , we see that the lower surface of the grid 30 has an integrated diffusing texture. Said integrated diffusing texture aims to diffuse as much as possible the light leaving the exit surface of the inter-lens spaces of the optical element 10 as soon as the light penetrates said grid 30 through its lower surface.
  • the diffusion obtained thanks to the diffusing texture, as illustrated in the Figure 7 and more clearly visible on the figure 8 is a greater diffusion of lights generated by light sources forming part of the second plurality of light sources of a projector.
  • the light is not diffused in the form of individual beams but the diffusion makes it possible to obtain a more overall lighting effect.
  • the resulting optical effect is that we obtain a more diffused light instead of obtaining a concentration of light called “hot spots” and therefore an improved optical effect.
  • FIG. 9 represents a sectional view of different elements of a projector provided with an optical assembly 100.
  • the Figure 9 represents a printed circuit 60. It is possible to use a first printed circuit (not visible on the Figure 9 ) in order to fix a first plurality of light sources, such as power light-emitting diodes (LEDs) (not visible on the Figure 9 ), adapted with lenses 20, and a second printed circuit for a second plurality of light sources 61, such as signal light-emitting diodes (LEDs), adapted to be accommodated inside the orifices 46 of the support element 40 It is not possible to use the same printed circuit to fix the first plurality of light sources and the second plurality of light sources.
  • the second printed circuit has the same shape as the grid 40.
  • the second plurality of light sources 61 is provided with light emitting diodes (LEDs) 61 in the form of SMD (surface mounted components) light emitting diodes (LEDs). It is possible to use, more particularly, light-emitting diodes (LEDs) for signaling. It should be noted that it is difficult to integrate a large number of LEDs with the control system on the small area located on the second printed circuit (same shape as grid 40).
  • FIG. 9 illustrates the support element 40, positioned at an orifice 46, said support element 40 allowing the production of light using the CMS light emitting diodes (LED) 61 which passes through the support element 40 in the direction of the projector output (the Figure 9 illustrates the movement of light from bottom to top).
  • the support element 40 is provided, on the opposite side of the orifice 46, with walls 47, 48 together forming a mask making it possible to guide the light generated by the CMS light-emitting diodes (LED) 61 in the direction of the optical element 10 and to avoid the leakage of light towards the lenses 20.
  • the lens 20 For the purposes of clarity, only two parts of the lenses 20 are shown on the Figure 9 .
  • the support element 40 is made of an opaque material, preferably an opaque black material, for any light not collected by the converging profile 80 of the rib 18 of the optical element 10. It is recalled that the walls 47, 48 together form the gutters, as described above with reference to the Figure 5 .
  • There converging surface 80 is the surface directed towards the SMD light emitting diodes (LED) of the rib 18, as described above with reference to the Figure 3 .
  • the light emanating from the light-emitting diodes (LED) 61 is channeled and directed towards the exit surface of the inter-lens spaces 81 of the optical element 10. The diffusion of light continues towards the exit surface of the inter-lens spaces 81 and penetrates inside the grid 30. For reasons of clarity, said grid 30 is not shown on the Figure 9 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection Apparatus (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Claims (8)

  1. Eine optische Baugruppe (100) für einen Projektor, die Folgendes beinhaltet:
    - ein optisches Element (10) mit einer Anordnung von Linsen, wobei die Linsen (20) dazu angepasst sind, mit einer ersten Vielzahl von Lichtquellen, wie LEDs, des Projektors zusammenzuwirken, wobei die Linsen (20) dazu angepasst sind, primäre Lichtstrahlen zu erzeugen und mittels Linsenzwischenräumen voneinander beabstandet sind,
    - ein Gitter (30) zum Ausfüllen mindestens eines Teils der Linsenzwischenräume der Anordnung von Linsen, das dazu angepasst ist, mit einer zweiten Vielzahl von Lichtquellen, wie LEDs, des Projektors zusammenzuwirken, dadurch gekennzeichnet, dass
    das Gitter dazu angepasst ist, durch Zusammenwirken mit der zweiten Vielzahl von Lichtquellen einen sekundären Effekt zu erzeugen, und dadurch, dass es ferner auch Folgendes umfasst:
    - ein Stützelement (40), das dazu angepasst ist, die Anordnung von Linsen an den Linsenzwischenräumen zu stützen,
    und dadurch, dass das Gitter (30) und das Stützelement (40) dazu angepasst sind, übereinander zu liegen, indem sie das optische Element (10) zwischen der Innenseite des Gitters (30) und der Oberseite des Stützelements (40) einschließen und dadurch die Anordnung von Linsen (20) fixieren, um die optische Baugruppe (100) zu bilden.
  2. Optische Baugruppe gemäß Anspruch 1, wobei das Gitter (30) dazu angepasst ist, jede Linse (20) in der Anordnung von Linsen (20) zu umgeben.
  3. Optische Baugruppe gemäß Anspruch 1 oder 2, wobei das Gitter ein transparentes Kunststoffmaterial beinhaltet.
  4. Optische Baugruppe gemäß einem der Ansprüche 1, 2 oder 3, wobei das Gitter (30) auf der Seite, die der zweiten Vielzahl von Lichtquellen (61) zugewandt ist, eine integrierte streuende Textur beinhaltet, die ermöglicht, einen diffusen Lichteffekt zu erhalten.
  5. Optische Baugruppe (100) gemäß einem der vorhergehenden Ansprüche, wobei die Linsen (20) so gebildet sind, dass sie zusammen eine Scheibe bilden.
  6. Optische Baugruppe (100) gemäß einem der vorhergehenden Ansprüche, wobei das optische Element (10) mindestens zwei Module beinhaltet, wobei jedes Modul mindestens eine Linse (20) beinhaltet.
  7. Optische Baugruppe (100) gemäß einem der vorhergehenden Ansprüche, wobei das Stützelement (40) ein lichtundurchlässiges Material, vorzugsweise aus schwarzem Material, beinhaltet und Öffnungen (46) beinhaltet, die zum Einbetten der Lichtquellen der zweiten Vielzahl von Lichtquellen (61) angepasst sind, wobei das Stützelement (40) somit eine Maske für die Lichtquellen (61) bildet.
  8. Ein Projektor, beinhaltend eine erste Vielzahl von Lichtquellen, wie LEDs, die dazu angepasst sind, mit einer Anordnung von Linsen (20) zusammenzuwirken, um primäre Lichtstrahlen zu erzeugen, wobei die Linsen (20) des Projektors mittels Linsenzwischenräumen voneinander beabstandet sind, und eine zweite Vielzahl von Lichtquellen (61), wie LEDs, die dazu angepasst ist, mit einem Gitter (30) zusammenzuwirken, das an den Linsenzwischenräumen vorhanden ist, um einen sekundären Lichteffekt zu erzeugen, wobei der Projektor die optische Anordnung (100) gemäß einem der Ansprüche 1 bis 7 beinhaltet.
EP21743554.4A 2020-07-01 2021-06-25 Optische anordnung für einen projektor und projektor mit solch einer optischen anordnung Active EP4176201B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2006942A FR3112219B1 (fr) 2020-07-01 2020-07-01 Assemblage optique pour un projecteur et projecteur comprenant un tel assemblage optique
PCT/FR2021/051174 WO2022003283A1 (fr) 2020-07-01 2021-06-25 Assemblage optique pour un projecteur et projecteur comprenant un tel assemblage optique

Publications (3)

Publication Number Publication Date
EP4176201A1 EP4176201A1 (de) 2023-05-10
EP4176201B1 true EP4176201B1 (de) 2024-08-07
EP4176201C0 EP4176201C0 (de) 2024-08-07

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EP21743554.4A Active EP4176201B1 (de) 2020-07-01 2021-06-25 Optische anordnung für einen projektor und projektor mit solch einer optischen anordnung

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US (1) US20230288043A1 (de)
EP (1) EP4176201B1 (de)
CN (1) CN116264839A (de)
FR (1) FR3112219B1 (de)
WO (1) WO2022003283A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1022308S1 (en) * 2020-11-17 2024-04-09 Smart Atoms Limited Pattern for an LED panel
FR3148075A1 (fr) * 2023-04-24 2024-10-25 Ayrton Dispositif lumineux comprenant un projecteur pourvu d’une protection étanche

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083626A (en) * 1975-04-04 1978-04-11 Fuji Photo Film Co., Ltd. Rear projection screens
DK177579B1 (en) * 2010-04-23 2013-10-28 Martin Professional As Led light fixture with background lighting
US8496354B2 (en) * 2010-11-24 2013-07-30 Robe Lighting S.R.O. Beam control system for an LED luminaire
US10161595B2 (en) * 2012-03-18 2018-12-25 Robe Lighting S.R.O. Collimation system for an LED luminaire
US9420644B1 (en) * 2015-03-31 2016-08-16 Frank Shum LED lighting
CN208634805U (zh) * 2018-05-04 2019-03-22 广州市浩洋电子股份有限公司 一种光学系统及应用此光学系统的照明灯具
US10670225B2 (en) * 2018-09-13 2020-06-02 Elation Lighting, Inc. Sparkle effect lighting device

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Publication number Publication date
FR3112219A1 (fr) 2022-01-07
US20230288043A1 (en) 2023-09-14
FR3112219B1 (fr) 2022-07-15
CN116264839A (zh) 2023-06-16
EP4176201A1 (de) 2023-05-10
WO2022003283A1 (fr) 2022-01-06
EP4176201C0 (de) 2024-08-07

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