EP3097346A1 - Leuchtmittel mit vorgebbarer abstrahlcharakteristik und herstellungsverfahren für einen optikkörper - Google Patents
Leuchtmittel mit vorgebbarer abstrahlcharakteristik und herstellungsverfahren für einen optikkörperInfo
- Publication number
- EP3097346A1 EP3097346A1 EP15701139.6A EP15701139A EP3097346A1 EP 3097346 A1 EP3097346 A1 EP 3097346A1 EP 15701139 A EP15701139 A EP 15701139A EP 3097346 A1 EP3097346 A1 EP 3097346A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical body
- light
- radiation
- recess
- along
- 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.)
- Granted
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the 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
- F21V5/043—Refractors for light sources of lens shape the lens having cylindrical faces, e.g. rod lenses, toric lenses
-
- 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
- F21V5/10—Refractors for light sources comprising photoluminescent material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/90—Methods of manufacture
-
- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- 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
- US 2011/0305024 AI, US 2011/0038144 AI and US 2012/0155072 Al each describe light sources.
- a problem to be solved is to provide an easy herzustel ⁇ lendes and compact lamps.
- Another object to be achieved is to provide a method for producing an optical body which is contained in a simple to produce and compact bulbs.
- the lighting means can be provided in particular for surface lighting.
- the illuminant may be, for example, a screen backlight.
- the lighting means can be provided for the general lighting.
- the bulb is then provided, for example, as a room lighting, a ceiling light, a lighting for open-plan offices, a trailing ⁇ backlight of a light box for outdoor advertising, a gear lighting, lighting for aircraft cabins, or a street lamp.
- this comprises a single optic body with a radiation entrance surface and a radiation exit surface.
- the radiation entrance surface and the radiation exit face are gebil ⁇ det by portions of the outer surface of the optical body, which areas also places overlap Kgs ⁇ NEN.
- the optic body may be, for example, a rod which is in particular cylindrical or semicylindrical.
- the optical body can for example consist of a material which is radiation-permeable and has a higher refractive index than air. In ⁇ example, the optical body can contain glass or an optical plastic or be formed from this.
- the optical plastic may be, for example, polymethyl methacrylate (colloquially: Plexiglas), polystyrene, cyclo-olefin copolymers or polycarbonate.
- the Bre ⁇ deviation index of the material of the optic body may beispielswei ⁇ se in a range from at least 1.4 up to 2.7 lie ⁇ gene.
- the optic body is formed in particular designed as a solid body and is free of voids and gas entrapment within the manufacturing tolerance.
- the optical body may be formed entirely of the same material.
- the optic body has a main extension direction.
- the spatial extent of the optical body in egg ⁇ ner spatial dimension is considerably larger than the spatial extent of the optical body in the other two spatial dimensions.
- the optical body has a length along the main extension direction and a maximum radial extent in a first plane which runs perpendicular to the main extension direction of the optical body, the maximum radial extent being significantly smaller than the length.
- the main extension direction may be, for example, the longitudinal axis of a cylinder, Halbzylin ⁇ ders or cuboid.
- the lighting means includes fully said at least two LEDs, each for ⁇ least one LED chip and a tread surface include Strahlungs trim-.
- the radiation passage surfaces of the light emitting diodes face the radiation entrance surface of the optics body, whereby the light emitted by the light emitting diodes is coupled directly into the optic body.
- the light-emitting diode chips emit, for example, colored light, for example light in the blue region of the electromagnetic spectrum.
- the LEDs can be a phosphor for
- Wavelength conversion include. Accordingly, it is possible to produce white light of a predefinable color temperature with the illuminant.
- the radiation passage areas of the at least two light-emitting diodes extend along a main extension plane.
- the main direction of extension of the optical body can run, for example, parallel to the main extension planes of the LED chips.
- the at least two light emitting diodes are arranged along the Haupterstre ⁇ ckungsplatz of the optic body.
- the LEDs are within the manufacturing tolerances
- the light emitting diodes may be mounted on a rigid or flexible support, such as a printed circuit board with connection points, or another carrier with circuit traces.
- the carrier may comprise a material which reflects the emit ⁇ struck by the LED light.
- the light-emitting diodes are not arranged on a support but, for example, at the radiation entrance surface of the optical system. are mounted body. The optic body then forms the carrier for the LED chips.
- the radiation entrance surface of the optic body runs flat or is convexly curved.
- Curved convex here and in the following means that the curvature extends to the outside, ie away from the center of the optic body.
- a concave curved radiation entrance surface would then be curved inwards.
- Cross section of the optical body of the first plane form a semicircle or have no curvature within the manufacturing tolerance.
- the luminous means environmentally summarizes the radiation exit surface of the optical body at least ⁇ a recess in the optic body.
- the recess may be, for example, a recess or notch.
- the depression is thus directed inwards.
- the depression can be made by material removal or by impressions.
- the at least one depression is intended to decouple light propagating in the optic body in the desired manner from the optic body.
- a homogenous illumination can be achieved by the depressions.
- the grooves cause the Lichtvertei ⁇ distribution curve of light emitted from the light emitting diodes light is homogenized.
- the depression can be designed so that the probability of total reflection and / or back reflection of the propagating light at the
- Boundary surface which is excised by a Sei ⁇ ten- or outer surface of the optic body limiting the depression pelt, is either reduced or increased in the desired manner.
- the recess is formed so ge ⁇ that the propagating light in the optical bodies of the entwe ⁇ preferably by limiting the depressions side or outer surfaces is coupled or, preferably, no light enters through the sides or exterior surfaces. Accordingly, the output coupling efficiency of a ⁇ coupled into the optical body, where the propagating light waveguide light can be increased with the recess and / or a desired radiation pattern, i.e., a desired intensity distribution for which of the
- Illuminant emitted light can be generated.
- the radiation exit surface of the optic body is curved.
- the radiation exit surface of the optical body is completeness, ⁇ dig, convexly curved with the exception of the wells.
- this comprises a single optic body which has a main extension direction, a radiation entrance surface and a radiation exit surface, and at least two
- Light emitting diodes each at least include a light emitting diode chip and a radiation passage surface, which extends along a main extension plane, wherein the at ⁇ least two light emitting diodes are arranged along the main direction of extent of the optical body, the Strahlungseintrittsflä- surface of the optical body the passage of radiation surfaces of the light-emitting faces is, the optical body is formed as a solid body, the radiation entrance surface of the Optikkör ⁇ pers is flat or convex curved and the radiation Lungsaustrittsflache the optic body comprises at least one Vertie ⁇ tion in the optical body.
- the idea in particular is tracked to obtain a desired radiation pattern, in particular ⁇ sondere a clear forward beam pattern, and a high light efficiency by accessories fitted to the radiation exit surface of the optical body cavities.
- the optical body contained in the light source is also simple and inexpensive to produce, whereby a high degree of flexibility with regard to the possible uses of the light source can be achieved.
- the luminous means ER- stretches the at least one recess over virtually the full length, that is at least about 90% of TOTAL ⁇ th length, or ent ⁇ long over the entire length of the optical body of the main direction of extension.
- the recess may extend, for example, in a plan view of the optical body along the main extension direction of the optical body, wherein the recess may extend axially symmetric to a line which is parallel to the main extension direction.
- the at least one depression may be the only depression in the optic body.
- the light source comprises only a single Vertie ⁇ fung, which he stretches almost the full length ⁇ .
- an imaginary line may be through a point of the single recess and a point on one
- Radiation passage surface of a light emitting diode form a symmetry axis for the optical body.
- the radiation passage areas between the radiation passage surfaces are at least two light emitting diodes and the radiation entrance surface of the optic body, a material having a lower Bre ⁇ index of index than the material of the optic body and the materi ⁇ al of at least two light emitting diodes.
- the material may also be a gas, such as air.
- the induced by this arrangement, light refraction at the two interfaces at the transition is a gas-filled gap between the passage of radiation surfaces of the light emitting diodes and the radiation entrance surface of the Optikkör ⁇ pers.
- the lighting means includes fully said at least two wells, wherein said at least two depressions are arranged along the main direction of extent of the optical body and the at least two Ver ⁇ depressions extending parallel to the first plane within the manufacturing tolerances.
- the depressions in this embodiment each extend parallel to a transverse line that runs transversely or perpendicular to the longitudinal axis of the optical body.
- the at least two depressions may extend, for example, over the entire radiation exit surface of the optic body, but it is also possible for the at least two depressions to extend only over a part of the radiation exit surface of the optic body.
- the lighting device be ⁇ found a material having a higher or moving ⁇ chen refractive index than the material of the optic body and ei ⁇ NEN lower refractive index than the material of the at least two between the passage of radiation surfaces of the at least two light emitting diodes and the radiation entrance surface of the optical body Having light-emitting diodes.
- the material may be, for example, a connecting silicone layer and / or another adhesive layer.
- the material can surfaces into ⁇ special in direct contact with the Strahlungs bio trecs- and the radiation entrance area are.
- Insbesonde ⁇ re it is possible that the material is formed of the same material as the optical body.
- a refractive index matching between the radiation through areas of the at least two light emitting diodes and the radiation entrance surface of the optical body can for example be ⁇ sought.
- the light it is possible for the light to undergo only a single refractive index jump during the transition from the radiation passage areas of the light-emitting diodes into the optic body.
- the luminous means is bordered at least one recess loading by an outer surface, a portion of the outer surface of the optic body bil ⁇ det and the outer surface, the at ⁇ least one recess within the manufacturing tolerances, the shape of a circular segment to a cross-section , The shape of the recess be ⁇ relationship, the outer surface of the recess can be Accord- completed accordingly to a circle.
- the cross section may, for example, take place parallel to the first plane, ie perpendicular to the main extension axis of the optic body.
- the luminous means ⁇ the at least two cavities each bounded by two Be ⁇ ten lake which form a part of the outer surface of the Op ⁇ tik emotionss.
- the two side surfaces are arranged relative to one another in such a way that they delimit the tip of a particular isosceles triangle in a cross-section of the at least one recess within the scope of the manufacturing tolerance.
- the boundary lines of the two side surfaces thus form a triangle together with a line connecting the two boundary lines.
- the cross section takes place, for example, parallel to a second plane, which is spanned by a parallel to the main extension plane and an axis that runs perpendicular to the main extension plane of the light emitting diodes.
- a cross section parallel to the second plane then corresponds, for example, to a section along the main extension plane of the optic body.
- the two side surfaces at the apex of the triangle enclose an angle of at least 80 ° and at most 110 °.
- the boundary lines of the two side surfaces subtend an angle of at least 35 ° and at most 50 ° with a line connecting the boundary lines.
- the Abstrahlcharak ⁇ teriding of the light emitted by the lamp depends strongly on the size of the angle between the two side surfaces. For example, the angles are adjusted to the Bre ⁇ deviation index of the material of the optic body. Thus, for a larger refractive index, for example, a larger angle is needed to the same or similar Abstrahlcha- rakterizing as with a smaller refractive index to preserver ⁇ th.
- the first recess of the at least two depressions Ver ⁇ same shape or the same cross-section as the second recess of the lamp.
- these can be arranged, for example, periodically along the main extension direction of the radiation exit surface of the luminous means.
- the recesses are regularly spaced apart along the main extension direction of the optical body.
- the luminous means is the optical body, the single optical element of the means of Leuchtmit ⁇ .
- the desired radiation characteristic of the emitted light is thus achieved exclusively by the one optical body.
- the fluorescent material be ⁇ transmits the spatial extent of the at least one cavity along at least two mutually perpendicular axes standing at most 10%, preferably at most 6%, of the spatial from ⁇ expansion of the optical body along the same axes.
- the spatial Liehe extension along the two perpendicular axes can be at least 2% further preferably at least 4% ⁇ Wenig, the spatial extent of the optical body along the same axes.
- the two axes which are perpendicular to the direction of extension of the recess may be meant.
- the maximum extent of the at least one Ver ⁇ deepening corresponding to maximum 10%, preferably at most 6%, of the maximum radial extent of the optical body.
- the recess has a typical size in the range of at least 20 ym and at most 500 ym.
- the typical size here may be the spatial extent of the at least one depression along the at least two mutually perpendicular axes.
- the size of the optical body along the axes perpendicular to the main plane of extension in a range of 2 mm to 8 mm, and along the main axis of extension at over 10 mm.
- the optic body has the shape of a straight cylinder or a half-cylinder.
- the radiation entrance area of the op ⁇ tik emotionss corresponds to either one half of the overall curved surface of a cylinder or not rümm ⁇ th surface area of a half-cylinder.
- the main extension direction of the optic body then runs parallel to the longitudinal axis of the cylinder.
- the straight side of the half cylinder runs in the context of manufacturing tolerances parallel to the main extension plane of the light-emitting diodes.
- the diameter of the cylinder or the radius of the half-cylinder is for example in a range of 2 mm to 8 mm.
- the intensity distribution in the far field of the light emitted by the luminous means as a function of a polar angle to the surface normal, which runs in the main extension plane of the light emitting diodes and perpendicular to the main extension direction of the optic body, two local maxima, which by a single local minimum are separated.
- the measurement of the intensity distribution as a function of the polar angle for example, along a circular line, the perpendicular to the main direction of extension of the optical body and parallel to the main extension plane of the LEDs ver ⁇ runs.
- the intensity distribution as a function of the polar angle is axisymmetric within the scope of the measurement accuracy. This means that the two local maxima within the measurement accuracy have the same intensity.
- the symmetry axis can run through the minimum of the intensity distribution.
- ⁇ carries at least one embodiment of the luminous means the minimum of the intensity distribution as a function of the polar angle at most 60% of the intensity of the maxima. This means that the minimum clearly separates the two maxima. In particular, the minimum within the measurement accuracy Exactly ⁇ is different from zero. This means that the minimum can be clearly distinguished from the noise floor of the measuring equipment.
- Such an intensity distribution measured as a function of a polar angle corresponds in a Dimensi ⁇ on a so-called bat wing intensity distribution.
- the intensity distribution in the far field of the light emitted by the luminous means as a function of an azimuth angle to the surface normal, which runs parallel to the main extension direction of the optic body, a plateau, within which the intensity by at most 5% to one in the frame the measurement accuracy varies from zero different average up or down.
- the intensity distribution as a function of the azimuth angle can, for example, along a Kreisli ⁇ never, which runs parallel to the main extension direction of the optic body, are measured.
- the intensity distribution can therefore be measured, for example, along the (half) Zylinderlhurs ⁇ axis.
- the lighting means corresponds to the half value width of the intensity distribution gemes ⁇ sen as a function of the azimuth angle of at least 70%, preferably at least 80% of the width of the plateau. In other words, the intensity distribution drops steeply toward the sides of the plateau.
- the half-width is defined here and below as full half width, that is, that the
- Half-width is given by the difference between the two angles at which the intensity distribution has dropped to half of the mean maximum intensity, respectively.
- the width of the plateau is given, for example, by the difference between the two angles at which the intensity is less than 5% of its mean.
- the luminous means is the half-value width of the intensity distribution as a function of the azimuth angle of at least a factor 1.7, preferably we ⁇ tendonss a factor of 2.4, greater than the half-value width of the intensity distribution as a function of the polar angle.
- the light distribution which is emitted by the luminous means is not radially symmetrical but wider along the main extension direction of the optic body than perpendicular thereto.
- the intensity distribution thus reflects the shape of the optic body.
- the light emitted transversely to the main direction of extension can be collimated and the light emitted along the main extension direction can be widened.
- the intensity distribution is a function of the polar angle in FIG Substantially translation-invariant.
- the intensity distribution as a function of the polar angle does not change along the main extension plane of the luminous means.
- the measurement of the intensity distribution as a function of the polar angle and the polar angle can be carried out with a so-called Ulbricht sphere.
- Ulbricht sphere The Ul ⁇ breaks ball can be introduced reasonable for the measurement of Intensticiansvertei ⁇ lung as a function of the polar angle at any point along the main extension direction of the optical body then, always the same result is obtained.
- the optical body comprises phosphor particles for wavelength conversion of the electromagnetic radiation emitted by the light-emitting diodes.
- the LEDs emit blue light, which is converted by the phosphor particles into green, white, red light and / or red-yellow light.
- the phosphor particles may be evenly distributed in the optical body.
- the phosphor particles are applied to only one redesignflä ⁇ che of the optical body.
- the phosphor particles are contained in a layer which is mounted on egg ⁇ ner outer surface of the optical body.
- the optic body may also contain other nonconverting scattering particles.
- the scattering particles may include, for example, a metal oxide such as titanium dioxide (TiO 2 ).
- the still soft material of the optic body is continuously pulled out of the melt through a shaping opening.
- the production of the optic body takes place by means of extrusion, forming or Strangzug.
- such a method makes it possible to produce variable length optical bodies without major changes in the process.
- the at least one depression is introduced into the not yet completely solidified optic body.
- the recess can be introduced, for example, with a surface-structured roller or a forming wheel. In this case, no material removal takes place from the optic body, but material is displaced in the optic body to form the depression.
- the wells are excluded from the optical body, that is, a part of the optical body is removed therefrom.
- FIG. 1 and FIG. 2 show exemplary embodiments of the luminous means described here.
- Figures 3 to 5 show intensity distribution in the near
- FIG. 1 shows a first embodiment of a lighting device described here 1.
- Figure 1A shows the light ⁇ medium 1 based on a schematic sectional view parallel to the first plane XY, which is spanned by the two perpendicular to the main extension direction Z of the optical body axes X, Y.
- FIG. 1B shows the luminous means 1 on the basis of a side view.
- the lamp 1 comprises an Op 3b ⁇ tikêtève 3 with a radiation entrance surface 3a and a radiation exit surface, and at least one light emitting diode 2, comprising at least one light emitting diode chip 21 and a
- Radiation passage surface 2a which extends substantially pa ⁇ rallel to the main extension plane XZ of the light-emitting diodes 2.
- the LED chips are configured for example as so-called ⁇ surface emitters, that is, that the LED chips have essentially a Lambert 'sches Strah ⁇ lung profile.
- the dimensions along the main extension plane XZ of a radiation passage surface 2a of a light-emitting diode 2 are in a range of at least 0.5 mm 2 to at most 1 mm 2 .
- the radiation passage area 2a of the light-emitting diode 2 may be square or rectangular, for example.
- the choice of the dimensions of the optical body 3 is dependent on the choice of the dimensions of the radiation passage area 2a.
- the cross section of the optical body 3 along the first plane XY forms a circle in the illustrated embodiment.
- the optical body 3 is therefore cylindrical.
- the optical body 3 is formed strichzylin- derförmig.
- the light emitting diode 2 can ⁇ example, in direct contact with the optical body 3 are provided, but it is also possible - unlike shown in Figure 1A - that a connecting material between the light emitting diodes 2 and the optic body 3 is disposed.
- the light-emitting diodes are arranged along the main extension direction Z of the luminous means 1.
- the distance along the main extension direction Z between two adjacent light-emitting diodes is 10 mm.
- the selected distance is dependent on the desired intensity and homogenization ⁇ tuschsverotti of light emitted from the lamps 1 light and thus may vary.
- a plurality of recesses 4 are arranged, which extend in the context of the manufacturing tolerances parallel to the first plane XY.
- the recesses 4 are bounded by two side surfaces 4c.
- the side surfaces 4c form part of the outer surface 3a, 3b of the optical body 3.
- the two side surfaces 4c together form the tip 42 of an isosceles triangle.
- the two side surfaces 4c enclose an angle of at least 80 ° and at most 110 ° with each other.
- the distance of the tip 42 of the triangle formed from the radiation exit surface 3b are, for example, in a range of at least 50 ym and at most 500 ym.
- the distance to the radiation exit surface may be 200 ym.
- the distance be ⁇ nachbarter recesses may for example be a maximum of 100 ym.
- the distances and ab ⁇ measurements may differ from the above values, for example, by 20% up or down.
- the distances and dimensions of the triangles formed depend on the dimensions of the optic body.
- FIG. 2A shows a
- Sectional view parallel to the first plane XY and Figure 2B shows a side view.
- the cross section of the optical body 3 along the first plane XY forms a semicircle in the illustrated embodiment.
- the optic body 2 thus has the shape of a half-cylinder.
- the recess 4 extends along the main extension direction Z of the optical body 3.
- the light-emitting diodes 2 are arranged on a support 5, but it is also possible that outer surfaces of the light-emitting diodes 2 are at least in places in direct contact with the optical body 3 and thus no support 5 is needed.
- the carrier 5 may comprise, for example, a reflective layer on which the light emitting diode 2 facing cover surface, the example ⁇ over 90% of the light emitted from the light emitting diodes 2 light reflected.
- the air gap 6 has a lower refractive index than the material of the optical body 3 and the material of the light-emitting diode 2 on.
- the at least one recess is bounded by an outer surface 4d which constitutes a part of the outer surface 3a, 3b of the Optikkör ⁇ pers. 3
- the outer surface 4d of the recess 4 forms in the context of manufacturing tolerances in cross section parallel to the first plane XY the shape of a circle segment. The distance between the lowest point of the circle segment and the highest point of the circle segment
- Radiation outlet face 3b of the optic body 3 may be at play ⁇ , 200 ym and the width of the recess ⁇ example, 0.5 mm.
- the dimensions of the recess may deviate upwards or downwards from these values mentioned above by up to 20%.
- Figures 3, 4 and 5 show simulated normalized Intensi ⁇ tuschsverottien 61a, 61b, 61c, 62a, 62b, 62c of approximately examples of exporting ⁇ a lighting device described herein 1 emitted light as a function of the azimuth angle ⁇ relate hung as the polar angle ⁇ .
- Figures 3A, 4A and 5A zei ⁇ gen here in each case the intensity distributions 61a, 62a in the near field of the light in a distance of 1 mm from the radiation exit surface 3b of the optical body 3.
- the Figures 3B, 4B and 5B respectively show the intensity distributions 61b, 62b in the between field of light at a distance of 10 mm on the radiation exit surface 3b of the optical body 3.
- the ⁇ Fi gures 3C, 4C and 5C respectively show the intensity distributions 61b, 62b in the far field of the light.
- the Intensticiansvertei ⁇ ments 61a, 61b, 61c, 62a, 62b, 62c are normalized to their respective maximum.
- Figures 3A, 3B and 3C show intensity distributions 61a, 61b, 61c, 62a, 62b, 62c of one in conjunction with Figs Figure 1 described embodiment of a here ⁇ written light source 1 emitted light, wherein the recesses 4 are negligibly small at the radiation exit surface 3b of the Op ⁇ tik stressess 3 of the embodiment.
- the recesses 4 can not be distinguished from a typical surface roughness of the material of the Op ⁇ tik stresses.
- the Intensi ⁇ tiquessverottien in the near field 61a, 62a have strong Fluktuati ⁇ ones of the intensity that gen in the intensity distributions in the far field 61c, 62c is reduced.
- the ⁇ tensticiansver whatsoever in the far field 61c as a function of the polar angle ⁇ is relatively narrow.
- Figures 4A, 4B and 4C show intensity distributions 61a, 61b, 61c, 62a, 62b, 62c of light emitted by a method described in connection with the Figure 1 embodiment of a here be ⁇ signed illuminant 1 light, the triangular depressions 4 on the Strahlungsaustritts- surface 3b of the optical body 3 are no longer negligible. Due to the depressions 4, the fluctuations of the intensity distributions in the near field 61a, 62a and in the intermediate field 61b, 62b are significantly reduced in comparison to the distributions of FIGS. 3A and 3B.
- the intensity distributions in the near field 61a, 62a and in the intermediate field 61b, 62b are thus more homogeneous than those of FIGS. 3A and 3B.
- An optic body 3 with detectable depressions 4 can thus sometimes lead to a faster homogenization of the propagation through it. lead the light.
- the intensity distributions in the far field 61c, 62c have a similar course to that of FIG. 3C, but in the case of the detectable depressions 4 shown in FIG. 4C, more of the light propagating in the optical body 3 is coupled out of the optical body 3.
- the intensity distribution in the far field 62c as a function of the polar angle ⁇ translationally invariant along the main extension plane Z of the optic body 3 (not in the Fi gures ⁇ shown).
- the intensity distribution in the far field 61c has a plateau as a function of the azimuth angle ,, within which the measured intensity varies by at most 5 ⁇ 6 by a mean value which differs from zero within the scope of the measurement accuracy.
- the width of the plateau is about 70 ° ⁇ 5 °. in the
- the half-value width of the intensity distribution ⁇ 61c about 100 ° ⁇ 5 °.
- the width of the plateaus of the In ⁇ tensticiansver republic 61c is thus a maximum of 70% of the half-value width ⁇ .
- Figures 5A, 5B and 5C show intensity distributions 61a, 61b, 61c, 62a, 62b, 62c of light emitted by a method described in connection with the Figure 2 embodiment of this ⁇ be signed 1 illuminant light.
- the fluctuations of the intensity distributions in the near field 62a and 62b intermediate field as a function of Polarwin ⁇ kels ⁇ continue also in the far field 62c are still clearly visible.
- the intensity distributions 62a, 62b, 62c as a function of the polar angle ⁇ on two maxima, wel ⁇ che separated by a minimum.
- the intensity distribution Lungs 62a, 62b, 62c are each axially symmetrical to an axis extending through the minimum, formed within the measurement and manufacturing ⁇ ment tolerances.
- the minimum has at most 60% of the intensity of the respective maximum, the minimum being different from zero.
- ⁇ In tensticiansver republic is particularly suitable for illumination of corridors or roads.
- the intensity distribution in the far field 61c as shown in FIG. 5C as a function of the azimuth angle ⁇ likewise has a plateau.
- the width of the plateau is about
- the half width of the intensity distribution 61c is about 150 ° ⁇ 5 °.
- the width of the Pla ⁇ teaus the intensity distribution 61c is thus a maximum of 80% of the half-value width.
- the intensity distributions 61a, 62b, 61c shown in FIGS. 3, 4 and 5 as a function of the azimuth angle ⁇ are always wider than the intensity distributions 62a, 62b, 62c as a function of the polar angle ⁇ . This is due to the fact that the optical body 3 has a main extension direction Z. In other words, the intensity distributions 61a, 61b, 61c, 62a, 62b, 62c of the luminous means 1 form the shape of the optic body 3.
- the illuminant 1 described here is due to the only egg ⁇ nen required optical body 3, which is easy to manufacture, very flexible and inexpensive.
- recesses 4 By attached to the radiation outlet face 3b recesses 4 increased optical efficiency can be achieved and the Ab ⁇ beam characteristic of the lighting device 1 can be adjusted.
- the distance and the dimensions or the geometry of the recess 4 are in this case to the dimensions of the Op- tik stressess 3 adapted to obtain a desired Abstrahlcharakte ⁇ ristics.
- the optical efficiency gives the percentage of the light intensity emitted by the illuminant to that in the
- Optics body coupled light intensity For example, the optical efficiency of an optical body having Vertie ⁇ levies 96.7% and the optical efficiency of an optical body without recesses is 81.5%. In particular, the optical efficiency of an optic body with depressions can amount to 98%.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014100582.1A DE102014100582A1 (de) | 2014-01-20 | 2014-01-20 | Leuchtmittel mit vorgebbarer Abstrahlcharakteristik und Herstellungsverfahren für einen Optikkörper |
| PCT/EP2015/050783 WO2015107153A1 (de) | 2014-01-20 | 2015-01-16 | Leuchtmittel mit vorgebbarer abstrahlcharakteristik und herstellungsverfahren für einen optikkörper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3097346A1 true EP3097346A1 (de) | 2016-11-30 |
| EP3097346B1 EP3097346B1 (de) | 2018-09-19 |
Family
ID=52396670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15701139.6A Not-in-force EP3097346B1 (de) | 2014-01-20 | 2015-01-16 | Leuchtmittel mit vorgebbarer abstrahlcharakteristik und herstellungsverfahren für einen optikkörper |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9976708B2 (de) |
| EP (1) | EP3097346B1 (de) |
| CN (1) | CN105899868A (de) |
| DE (1) | DE102014100582A1 (de) |
| WO (1) | WO2015107153A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4700284A3 (de) * | 2018-10-04 | 2026-04-29 | Quarkstar LLC | Kompakte beleuchtungsvorrichtungen und kompakte beleuchtungsvorrichtungen mit räumlich steuerbarer lichtemission |
| DE102018221634A1 (de) * | 2018-12-13 | 2020-06-18 | Osram Gmbh | Vorrichtung zum entkeimen eines fluids |
| US11629832B2 (en) | 2020-06-01 | 2023-04-18 | Flex-N-Gate Advanced Product Development, Llc | Homogenous lit line image vehicle lamp assembly |
| WO2021247399A1 (en) * | 2020-06-01 | 2021-12-09 | Flex-N-Gate Advanced Product Development, Llc | Homogenous lit line image vehicle lamp assembly |
Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11232912A (ja) * | 1998-02-16 | 1999-08-27 | Pfu Ltd | Led照明構造 |
| US7264366B2 (en) * | 2001-10-18 | 2007-09-04 | Ilight Technologies, Inc. | Illumination device for simulating neon or similar lighting using phosphorescent dye |
| DE102004042561A1 (de) | 2004-07-20 | 2006-02-16 | Osram Opto Semiconductors Gmbh | Optisches Element |
| WO2006090858A1 (ja) * | 2005-02-24 | 2006-08-31 | Litehouse Technologies Corporation | 発光装置及びそれを利用した発光物 |
| CN101303113A (zh) * | 2005-02-24 | 2008-11-12 | 莱特浩斯科技有限公司 | 发光装置及利用该发光装置的发光物体 |
| JP4631628B2 (ja) | 2005-09-13 | 2011-02-16 | 日本電気株式会社 | 照明装置及び表示装置 |
| KR100552589B1 (ko) | 2005-10-26 | 2006-02-16 | 화우테크놀러지 주식회사 | 즉석맞춤이 용이한 백라이트 유니트 |
| EP1813857A1 (de) * | 2006-01-27 | 2007-08-01 | Lucea AG | Lichtquelle |
| JP5215081B2 (ja) * | 2007-08-22 | 2013-06-19 | 正昭 宮本 | 照明装置 |
| US20090141515A1 (en) * | 2007-11-29 | 2009-06-04 | Rong-Yaw Wu | Flickerless backlight for a display panel |
| US20100011679A1 (en) | 2008-07-16 | 2010-01-21 | Monaco Gary J | Multi-purpose tray for inclined or level surfaces |
| TWI407043B (zh) * | 2008-11-04 | 2013-09-01 | Advanced Optoelectronic Tech | 發光二極體光源模組及其光學引擎 |
| CN101771027B (zh) | 2009-01-06 | 2015-05-06 | 奥斯兰姆有限公司 | 大功率led模块组件及其制造方法 |
| CN101994933B (zh) | 2009-08-14 | 2013-01-09 | 鸿富锦精密工业(深圳)有限公司 | 照明装置 |
| CN102128421A (zh) | 2010-01-18 | 2011-07-20 | 奥斯兰姆有限公司 | 灯壳、具有该灯壳的灯以及灯壳制造方法 |
| KR101064076B1 (ko) * | 2010-04-01 | 2011-09-08 | 엘지이노텍 주식회사 | 라이트 유닛 및 이를 구비한 표시장치 |
| CN101881387A (zh) | 2010-06-10 | 2010-11-10 | 鸿富锦精密工业(深圳)有限公司 | Led日光灯 |
| US20120044675A1 (en) * | 2010-08-23 | 2012-02-23 | Energy Focus, Inc. | Elongated LED Lamp |
| CN102072428B (zh) | 2010-12-20 | 2013-05-08 | 鸿富锦精密工业(深圳)有限公司 | Led日光灯 |
| JP5899508B2 (ja) * | 2011-04-28 | 2016-04-06 | パナソニックIpマネジメント株式会社 | 発光装置及びそれを用いた照明装置 |
| JP2012252988A (ja) | 2011-05-31 | 2012-12-20 | Torenta:Kk | 直管型ledランプ |
| DE102011106252A1 (de) * | 2011-07-01 | 2013-01-03 | Siteco Beleuchtungstechnik Gmbh | Leuchte mit Vergussmasse |
| CN102303946A (zh) * | 2011-08-08 | 2012-01-04 | 上海聚恒太阳能有限公司 | 一种压延制造菲涅尔聚光透镜的方法及装置 |
| CN103163572A (zh) | 2011-12-08 | 2013-06-19 | 欧司朗股份有限公司 | 透镜、发光装置和扫描仪 |
| US20130258699A1 (en) * | 2012-02-06 | 2013-10-03 | Lumenetix, Inc. | System and method for mixing light emitted from an array having different color light emitting diodes |
| TW201348649A (zh) * | 2012-05-21 | 2013-12-01 | 勝華科技股份有限公司 | 抗眩光燈源 |
| CN102943964B (zh) * | 2012-10-11 | 2015-04-01 | 京东方科技集团股份有限公司 | 一种发光二极管led灯 |
-
2014
- 2014-01-20 DE DE102014100582.1A patent/DE102014100582A1/de not_active Withdrawn
-
2015
- 2015-01-16 CN CN201580005135.XA patent/CN105899868A/zh active Pending
- 2015-01-16 US US15/113,017 patent/US9976708B2/en not_active Expired - Fee Related
- 2015-01-16 EP EP15701139.6A patent/EP3097346B1/de not_active Not-in-force
- 2015-01-16 WO PCT/EP2015/050783 patent/WO2015107153A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US9976708B2 (en) | 2018-05-22 |
| CN105899868A (zh) | 2016-08-24 |
| WO2015107153A1 (de) | 2015-07-23 |
| US20170002988A1 (en) | 2017-01-05 |
| EP3097346B1 (de) | 2018-09-19 |
| DE102014100582A1 (de) | 2015-07-23 |
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