WO2010091998A1 - Beleuchtungseinrichtung - Google Patents
Beleuchtungseinrichtung Download PDFInfo
- Publication number
- WO2010091998A1 WO2010091998A1 PCT/EP2010/051375 EP2010051375W WO2010091998A1 WO 2010091998 A1 WO2010091998 A1 WO 2010091998A1 EP 2010051375 W EP2010051375 W EP 2010051375W WO 2010091998 A1 WO2010091998 A1 WO 2010091998A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical element
- light
- lighting device
- radiation
- emitting diode
- Prior art date
Links
Classifications
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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
- F21V7/00—Reflectors for light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
-
- 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
- F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
- G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
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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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
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- 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
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- 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
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
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- 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
- a lighting device is specified.
- Indicate lighting device that can produce mixed-colored light particularly homogeneous and with a defined radiation characteristic.
- the illumination device comprises a light source.
- the light source has at least two light-emitting diode chips, which emit light of different color during operation. For example, at least one of the light-emitting diode chips can emit red light during operation. Another light-emitting diode chip of the light source can then emit white light during operation, for example. Furthermore, it is possible that the light source is more than two
- LED chips wherein the light-emitting diode chips in operation light of three or more different colors is emitted.
- Lighting device the illumination device comprises an optical element.
- the optical element is intended to bundle the light generated by the light source into a light beam with a defined emission profile.
- the opening angle of the light cone is This is the angle between the generatrix of the cone and the cone axis.
- the mantle of the light cone is assumed to be where the intensity of the emitted light has dropped to half its maximum value.
- the optical element is intended to mix the light of different colors of the LED chips of the light source.
- the optical element mixes the light such that the resulting color locus of the emitted light of the illumination device in the far field is at least within the coordinates of the ANSI boxes of the correlated color temperature of the mixed light.
- “In the far field” means that the distance to a radiation exit surface of the illumination device, for example, ten times the diameter of the optical element or more (for example, 1 m or more).
- the optical element is preferably provided for the fact that adjusts the defined color location of the mixed light over the full angle to the illumination device. That is, in an angular range of 180 ° - on an imaginary hemisphere, which completely, dome-like spans the lighting device - sets the described defined color location of the mixed light.
- the optical element is intended to mix the light of different colors emitted by the light-emitting diode chips in such a way that the color location of a surface illuminated by the illumination device appears homogeneous to the human eye.
- the optical element is formed as a solid body, which consists of a dielectric material consists.
- the optical element is made of a plastic such as PMMA. This has the advantage that the optical element can be produced particularly cost-effectively, for example via an injection molding process.
- the optical element has the following surfaces: A radiation entrance surface, which faces the LED chips, a
- Radiation exit surface which faces away from the LED chips, and a lateral surface which connects the radiation entrance surface and the radiation exit surface with each other.
- the optical element with its radiation entrance surface is arranged downstream of the light-emitting diode chips in their main emission direction, so that the predominant part of the light emitted by the light-emitting diode chips during operation reaches the radiation entrance surface of the optical element and can enter the optical element there.
- a large part of the light coupled into the optical element leaves the optical element through the radiation exit surface, which is arranged on the side of the optical element facing away from the radiation entrance surface.
- the lateral surface of the optical element laterally surrounds the optical element and in this way connects the radiation entrance surface to the radiation exit surface.
- Lighting device is the lateral surface for the light emitted by the LED chips in operation light reflective educated. That is to say, light which strikes the lateral surface when passing through the optical element is reflected there at least to a predominant extent, for example in the direction of the radiation exit surface. The reflection can be done by total reflection. But it is also possible that the lateral surface is coated reflective.
- the reflective coating may, for example, be realized by a metal layer vapor-deposited on the lateral surface, for example.
- Lighting device are the radiation entrance surface and / or the radiation exit surface of the optical element at least locally uneven. "Uneven” can mean that at least one of these surfaces is convex or concave. Furthermore, uneven may mean that at least one of these surfaces has a structuring, such as a roughening. In this case, the surface, which is uneven at least in places, may also be flat and / or smooth in areas. In these areas, the surface has no curvature and / or no structuring.
- Radiation entrance surface arranged, which is filled with a gas.
- the gap may be filled with air, for example. That is, light emitted by the LED chips in operation is refracted upon entering the optical element at the radiation entrance surface because there is a large refractive index difference.
- the refractive index of the optical element is at least 1.3.
- the radiation entrance surface acts as an optical surface. At least one of the light-emitting diode chips is not connected to the refractive index matched to the optical element. In this case, it is possible for the gap to be located between all the light-emitting diode chips of the light source and the radiation entrance surface of the optical element.
- the optical element represents the
- Lighting device is the only optical element which is arranged downstream of all light-emitting diode chips of the light source. That is, the illumination device comprises in this case a single optical element which is provided for generating a defined emission profile and for color mixing.
- the use of a single optical element for both of these tasks minimizes optical interface losses and thus offers the advantage of a particularly efficient illumination device.
- no multi-stage optical system is used in which, for example, the light is pre-collimated in a first stage, the emission profile is set in a defined manner in a second stage and in a final stage - for example by means of a light diffusion element - the color mixing is performed.
- the illumination device comprises a light source comprising at least two light-emitting diode chips, which emit in operation light of different color, and an optical element, which as
- the optical element comprises a radiation entrance surface which is the light-emitting diode chip is facing, a radiation exit surface which faces away from the LED chips, and a lateral surface which connects the radiation entrance surface and the radiation exit surface with each other, wherein the lateral surface is designed to be reflective for the light emitted by the LED chips in operation and the radiation entrance surface and / or the
- Radiation exit surface are at least locally uneven. In this case, a gap between at least one of the light-emitting diode chips of the light source and the
- Radiation entrance surface arranged, which is filled with a gas.
- the optical element is the only optical element that is arranged downstream of all the light-emitting diode chips of the illumination device. In the far field is mixed by the illumination device homogeneous mixed light.
- the lighting device described here is based on the following ideas: On the one hand, the use of a single, single-stage optical system proves to be
- Color mixing and generation of a defined emission profile as particularly efficient, as losses of interfaces of the optical element are thereby minimized.
- a separate light path in the optical element is realized for each color of the LED chips, which would in each case illuminate an area in the far field inhomogeneous at least in terms of color.
- the inhomogeneities of the individual light paths compensate each other in the sum, whereby a light mixture is realized. That is, at the radiation exit surface of the optical element inhomogeneities in the color location may be present, which are perceivable by the human observer. In the far field, however the color location of the area illuminated by the illumination device appears to be homogeneous.
- the lateral surface of the optical element is at least in places the lateral surface of a truncated cone. That is, the optical element has between the radiation entrance surface and the radiation exit surface at least a region in which it is formed in a truncated cone.
- the truncated cone preferably tapers from the radiation exit surface in the direction of the radiation entrance surface.
- the projection of the radiation exit surface into a plane perpendicular to a longitudinal central axis of the optical element has a larger surface area than the projection of the radiation entrance surface into this plane.
- the light of the light-emitting diode chips is reflected by means of total reflection on the lateral surface in the direction of the radiation exit surface. This means that in the optical element there is a light conduction from the radiation entrance surface to the radiation exit surface by means of total reflection at the lateral surface.
- Light beams of the LED chips run in the solid body of the optical element and meet on the lateral surface at a refractive index jump from the optically denser material of the optical element to the optically thinner material of the environment - for example, air.
- the light deflection by means of total reflection proves to be particularly efficient and leads to little or no optical losses due to the reflection. According to at least one embodiment of the
- each light beam of the light emitted by the LED chip light is reflected at most once on the lateral surface before it leaves the optical element through the radiation exit surface. That is, one
- Light beam passes through the optical element either without meeting the lateral surface or the light beam strikes at most once on the lateral surface and can then be totally reflected there in the direction of the radiation exit surface of the optical element, for example.
- This can be realized by a corresponding adjustment of the height of the optical element in the region of the lateral surface in a direction along the longitudinal central axis of the optical element with respect to the light emitting surface of the light source. This means, for example, that the larger the light emission surface of the light source, the thinner the optical element in the region of the lateral surface.
- the light emitting surface is the surface which encloses the envelope, which is guided around all light-emitting diode chips of the light source.
- the optical element is locally formed as a truncated cone. In the area in which the optical element is formed as a truncated cone, it has a
- the optical element may have one, two, three or more truncated cones, wherein the plurality of truncated cones are stacked on top of each other.
- the one or more truncated cones taper in the direction of the
- the optical element is locally formed as a truncated cone, which has a recess on the side of the radiation entrance surface.
- On the side of the radiation entrance surface of the truncated cone may for example have a hole which is formed in a predetermined manner.
- the recess is preferably formed rotationally symmetrical to the longitudinal central axis of the optical element.
- the recess is cylindrical, wherein the longitudinal center axis of the
- Cylinder coincides with the longitudinal center axis of the truncated cone and with the longitudinal central axis of the optical element.
- the recess may be provided so that light rays which strike a bottom surface of the recess facing the light-emitting diode chips can pass through the optical element without striking the lateral surface of the optical element. Side surfaces of the recess, which laterally surround the bottom surface of the recess, may be provided for impacting by refraction of light
- the structured with a recess radiation entrance surface is used for beam shaping.
- the bottom surface of the recess may be patterned in places, for example, it may be convex or concave curved or have roughening.
- the side surface of the recess is preferably smooth - so it is not roughened.
- Lighting device the optical element on the side of the radiation exit surface on a recess, wherein the optical element in the recess has a convexly outwardly curved first region.
- the first region is preferably arranged rotationally symmetrically about the longitudinal central axis of the optical element.
- the optical element may be formed, for example, in the manner of a converging lens.
- the optical element then preferably has a second region which laterally surrounds the first region. For example, the second region surrounds the first region in an annular manner.
- the second region projects beyond the first region in the direction from the radiation entrance surface to the radiation exit surface at least in places. That is, the second area may be like a ramp around the first area like a frame. The second area can completely enclose the first area.
- the optical element then has, for example, at its radiation exit surface on a recess in which a region is formed, which is curved convexly outwardly, that is in the direction of the radiation entrance surface to the radiation exit surface.
- the convexly curved area is laterally surmounted by the second area.
- Lighting device has at least one of the following surfaces of the optical element at least in places structuring: The radiation entrance surface, the radiation exit surface, the lateral surface.
- the structuring may be, for example, lenticular convex or concave structuring, which are formed in the respective surface.
- elliptical lenses are arranged on the radiation exit surface, which are formed by convex outwardly curved portions of the optical element on the radiation exit surface. The elliptical lenses can then with their main direction of extension in the direction of the puncture point of the longitudinal center axis and
- the structuring may be a roughening intended for light scattering.
- the roughening can be provided for further mixing of the different colors of the LED chips.
- the radiation entrance surface is made smooth where light rays enter it, which in the further course meet the lateral surface and are totally reflected there. Namely, these light beams are deflected in a defined manner by the optical element such that as a whole a color-homogeneous mixed light is established which has a defined emission profile.
- the lateral surface at least in places from the lateral surfaces of at least two, in particular composed of at least three truncated cones, which differ with respect to their opening angle.
- the opening angle of the truncated cones are the angle between a surface line of the truncated cone and the cone axis.
- the cone axis of the truncated cones preferably coincides with the longitudinal central axis of the optical element.
- the Cone are arranged on each other so that they each taper in the direction of the radiation exit surface to the radiation entrance surface of the optical element.
- the optical element has a lateral surface which is composed of the lateral surfaces of at least two or more truncated cones.
- the at least two or more truncated cones approximate the lateral surface of a larger truncated cone.
- the optical element has on its outer surface rotationally symmetrical facets, which are rotationally symmetrical with respect to the longitudinal central axis of the optical element. This faceting of the lateral surface of the optical element causes the exiting light to be mixed particularly homogeneously with respect to its color.
- the lateral surface is composed at least in places of planar surfaces which approximate at least one truncated cone. That is, the lateral surface is for example completely composed of non-rotationally symmetric facets. This measure also means that the light emerging from the illumination device is mixed particularly homogeneously.
- the light-emitting diode chips of the light source are arranged in a common mounting plane.
- the common mounting plane is, for example, the surface of a connection carrier on which the light-emitting diode chips are applied.
- the optical element is rotationally symmetrical with respect to the longitudinal central axis educated.
- Light-emitting diode chips of the same color of the light source are arranged point-symmetrically with respect to the puncture point between the longitudinal central axis and the mounting plane.
- FIGS IA, IB, 2A, 2B, 3A, 3B, 4 show embodiments of what is described here
- Lighting devices and the associated optical elements based on schematic representations.
- FIGS IA and IB show a first embodiment of a lighting device described herein in schematic perspective views from different viewing angles.
- the illumination device comprises a light source 1.
- the light source 1 comprises six light-emitting diode chips 2a, 2b.
- the light source 1 comprises two red light emitting LED chips 2a and four white light emitting LED chips 2b.
- the white light of the LED chips 2b is generated, for example, by means of a luminescence conversion material, which at least a part of the one of
- Semiconductor body of the LED chips emitted light converted to a light of higher wavelength.
- the white light is mixed with blue and yellow parts.
- the light-emitting diode chips 2a may each comprise a separate optical element which is formed, for example, by a potting body in which the light-emitting diode chips 2a, 2b are embedded.
- the LED chips 2a, 2b are applied to a connection carrier 5, which may be formed as a printed circuit board or metal film board.
- the light-emitting diode chips 2 a, 2 b are arranged in a common mounting plane 12 which, for example, through the mounting side of the light-emitting diode chip 2 a, 2 b facing the light-emitting diode chips
- Connection carrier 5 is formed.
- the light-emitting diode chips of the light source 1 are point-symmetrical with respect to the puncture point 13 between the longitudinal central axis 11 of the optical element 3 and the mounting plane 12 is arranged.
- the two red light-emitting LED chips 2a are located on a diagonal which intersects the longitudinal central axis 11.
- the light source 1 is arranged downstream of the optical element 3.
- the optical element 3 is formed as a solid body made of a transparent plastic.
- the optical element 3 is preferably free of radiation-scattering particles. That is, the optical element 3 is formed clear.
- the optical element 3 comprises a radiation entrance surface 31, which faces the light source 1.
- the radiation entrance surface 31 is arranged at a distance from the light-emitting diode chips 2a, 2b of the light source 1, so that there is a gap 4 between the light source 1 and the optical element 3, which in the present case is filled with air.
- the optical element 3 further comprises a lateral surface 32, which in the present case is in places the lateral surface of a truncated cone, which tapers in the direction of the radiation entrance surface 31.
- the optical element 3 comprises a radiation exit surface 33.
- the radiation exit surface 33 is divided here into two regions 331, 332. In the first region 331, the radiation exit surface 33 is curved convexly outwards.
- the second region 332 is planar and encloses the first region 331 at the edge, wherein the radiation exit surface in the first region 331 projects beyond the radiation exit surface in the second region 332.
- the optical element 3 is divided into two areas: In a first region 3 a is the lateral surface of the optical Element 32, the lateral surface of a truncated cone. Except for the recess 6 at the radiation entrance surface 33, the optical element 3 is formed in the first region 3a as a truncated cone. In the second region of the optical element 3b, the optical element is dome-shaped curved outward.
- the optical element 3 has a recess 6, which is formed like a cylinder or a truncated cone. If the recess 6 is truncated cone-shaped, the tapered
- the recess 6 is formed in each case rotationally symmetrical, wherein the axis of rotation coincides with the longitudinal central axis 11 of the optical element.
- the longitudinal central axis 11 intersects the light source 1 in the piercing point 13.
- the geometric center of gravity of the light source 1 preferably also lies on the longitudinal central axis 11.
- the operation of the lighting device during operation can be described as follows:
- Light-emitting diode chips 2a, 2b emitted in operation light 22a, 22b strikes the radiation entrance surface 31. There it is refracted due to the refractive index difference. Some of the rays are directed directly to the radiation exit surface 33 and leave the optical element 3 without hitting the lateral surface 32 in the region 3 a of the optical element. This applies in particular to beams which enter the optical element 3 in the region of the bottom surface 6a of the recess 6.
- Light rays which enter the optical element 3 in the region of the side surface 6b of the recess 6, are in Direction of the lateral surface 32 is guided in the region 3a and there preferably totally reflected once before they leave the optical element 3 through the radiation exit surface 33, for example in the second region 332.
- the optical element 3 has at its radiation exit surface 33 an inhomogeneous distribution of the light of the different colors. Due to the rotational symmetry of the optical element 3 and the arrangement of the LED chips 2 of the light source 1, however, takes place in the far field, that is, at a distance of, for example, at least 10 cm, for example, 1 m, a color mixture instead, which is particularly uniform.
- the light beams 22a, 22b are not diffusely scattered as they enter the optical element, for example by roughening, and are mixed in this way, but the light of different colors can pass through the optical element independently of one another in separate ways.
- the radiation entrance surface 31 is smooth, so that a defined refraction of the light beams 22a, 22b in the direction of the lateral surface 32 and then a defined reflection in the direction of the radiation exit surface 33 results.
- the light source 1 in the present case has four light-emitting diode chips.
- the light source comprises two green LED chips 2b, a red LED chip 2a and a blue LED chip (not shown).
- the bottom surface 6a of the recess 6 is not smooth, but in places convex and concave curved.
- the recess is in turn formed rotationally symmetrical to the longitudinal central axis 11 of the optical element.
- the optical element 3 has at its
- the structuring 8 is in the form of elliptical lenses which project convexly out of the optical element 3 and are formed, for example, from the material of the optical element 3.
- the elliptical lenses are arranged in concentric circles around the piercing point of the longitudinal central axis 11 of the optical element with the radiation exit surface 33, the main extension direction of the elliptical lenses being oriented in the direction of this piercing point.
- the design of the radiation entrance surface 31 and the radiation exit surface 33 of the optical element 3 leads to a particularly homogeneous light mixture of the individual colors of the LED chips 2a, 2b in the far field.
- LED chips 2a, 2b can be seen enlarged and therefore in the far field at excellent points results in a poorer color mixing.
- the in conjunction with the figures 3A, 3B and 4 described optical elements 3 for a lighting device described here also solve this problem.
- the lateral surface 32 of the optical element is formed by truncated cones 9 with different opening angle.
- the longitudinal center axes of the truncated cones 9 coincide with the longitudinal central axis 11 of the optical element 3.
- the optical element comprises, for example, at least two, in particular at least three truncated cones 9 of different size and a maximum of ten truncated cones 9 of different size.
- Truncated cones 9 approximate a larger truncated cone.
- the lateral surface 32 is in other words formed by rotationally symmetric facets.
- the optical element may have a recess 7, in which a first region 331 of the radiation exit surface 33 is formed, which is curved convexly outward.
- a second region 332 of the radiation exit surface 33 the indentation 7 is not arranged. This second region 332 projects beyond the first region 331 and encloses it like a frame.
- the lateral surface 32 is formed at least in places by non-rotationally symmetrical facets, for example by flat surfaces 10.
- the flat surfaces 10 thereby approximate the lateral surface of a truncated cone.
- the truncated cone is approximated by means of at least 40 flat surfaces 10 and at most 500 flat surfaces 10.
- the optical element 3 in turn comprises a bulge 7, in which a first region 331 of the radiation exit surface 33 is arranged, which projects beyond a second region 332 and is enclosed laterally.
- the color mixture for a lighting device described here is explained on the basis of graphical representation.
- the color location of the mixed light which is composed for example of the light beams 22a and 22b, is shown for four different cutting angles in the far field.
- the color locus for all angles is located within a single ANSI box, so that no color inhomogeneity can be detected by the human observer.
- Figures 6A and 6B show the CX and CY coordinates, respectively, of the color locus for the four different cut angles plotted for a hemisphere around the illuminator. It can also be seen from FIG. 6 that the homogeneous color mixture is approximately angle-independent.
- the invention is not limited by the description based on the embodiments of these. Rather, the invention encompasses any novel feature as well as any combination of features, including in particular any combination of features in the claims, even if this feature or combination itself is not explicitly stated in the patent claims or exemplary embodiments.
- the optical element described here adjusts is an invention and can also be claimed independently of the lighting device.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/147,018 US9772087B2 (en) | 2009-02-11 | 2010-02-04 | Lighting device with optical element in the form of a solid body |
CN201080007516.9A CN102317682B (zh) | 2009-02-11 | 2010-02-04 | 照明装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009008368 | 2009-02-11 | ||
DE102009008368.5 | 2009-02-11 | ||
DE102009017495.8 | 2009-04-16 | ||
DE102009017495.8A DE102009017495B4 (de) | 2009-02-11 | 2009-04-16 | Beleuchtungseinrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010091998A1 true WO2010091998A1 (de) | 2010-08-19 |
Family
ID=42317579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/051375 WO2010091998A1 (de) | 2009-02-11 | 2010-02-04 | Beleuchtungseinrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US9772087B2 (de) |
KR (1) | KR20110117222A (de) |
CN (1) | CN102317682B (de) |
DE (1) | DE102009017495B4 (de) |
WO (1) | WO2010091998A1 (de) |
Cited By (2)
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DE102010056313C5 (de) * | 2010-12-27 | 2017-03-16 | Automotive Lighting Reutlingen Gmbh | Beleuchtungseinrichtung eines Kraftfahrzeugs |
US11152423B2 (en) | 2016-05-12 | 2021-10-19 | Osram Oled Gmbh | Optical assembly and display device comprising an arrangement of luminescence diode chips |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102009047788A1 (de) * | 2009-09-30 | 2011-03-31 | Osram Opto Semiconductors Gmbh | Beleuchtungseinrichtung für eine Kamera sowie Verfahren zum Betrieb derselben |
JP2012173522A (ja) * | 2011-02-22 | 2012-09-10 | Panasonic Corp | 光学部材及び照明器具 |
DE102011012130A1 (de) * | 2011-02-23 | 2012-08-23 | Bartenbach Holding Gmbh | Beleuchtungsvorrichtung |
DE102011103179A1 (de) * | 2011-06-01 | 2012-12-06 | Hella Kgaa Hueck & Co. | Signalleuchte für Fahrzeuge |
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Also Published As
Publication number | Publication date |
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CN102317682B (zh) | 2015-09-02 |
US20110317414A1 (en) | 2011-12-29 |
CN102317682A (zh) | 2012-01-11 |
DE102009017495A1 (de) | 2010-08-12 |
KR20110117222A (ko) | 2011-10-26 |
US9772087B2 (en) | 2017-09-26 |
DE102009017495B4 (de) | 2020-07-09 |
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