EP3286493A1 - Beleuchtungsvorrichtung mit halbleiter-primärlichtquellen und mindestens einem leuchtstoffkörper - Google Patents
Beleuchtungsvorrichtung mit halbleiter-primärlichtquellen und mindestens einem leuchtstoffkörperInfo
- Publication number
- EP3286493A1 EP3286493A1 EP16720770.3A EP16720770A EP3286493A1 EP 3286493 A1 EP3286493 A1 EP 3286493A1 EP 16720770 A EP16720770 A EP 16720770A EP 3286493 A1 EP3286493 A1 EP 3286493A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spots
- light
- lighting device
- primary light
- pij
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/16—Laser light sources
-
- 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
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
- F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
- F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
-
- 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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
-
- 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
- F21V7/04—Optical design
-
- 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]
-
- 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
- F21Y2115/30—Semiconductor lasers
Definitions
- Lighting device with semiconductor primary light sources and at least one phosphor body
- the invention relates to a lighting device
- Emitting respective primary light beams a beam deflecting device which can be illuminated by means of the primary light beams and which can assume at least two beam deflecting positions, and at least one phosphor body which can be illuminated by means of primary light beams deflected by the beam deflecting device.
- the invention is applicable, for example, to projection devices, in particular
- Vehicle headlights or devices for professional lighting for example for effect lighting, e.g. as a stage spotlight or as a disco light.
- Simple headlights in the automotive sector today offer the choice between several well-defined light distributions, such. Low beam, high beam and fog light.
- dynamic cornering lights For example, dynamic cornering lights, motorway, city and bad weather light.
- the selection of the light distributions is partly made by the situation of the headlight system or the central electronics of the vehicle. Also exist in the field of vehicle lighting so-called.
- active headlamps in which a limited number of pixels arranged in columns can be generated. With active headlamps, for example, it is possible to have oncoming and preceding vehicles within your own
- a possible technical implementation of an active headlight is based on a means Laser radiation excitable phosphor. The phosphor is scanned here with the stimulating radiation or
- Light distribution can (as described in US 2014/0029282 AI) both an intensity modulation of the
- thermal quenching in terms of their conversion rate or a maximum acceptable power density (for example, due to their physical material properties such as a
- Luminous flux per cross-sectional area of the (by the laser beam) illuminated phosphor element To avoid the e.g. for one
- the achievable resolution decreases. So there is a conflict of objectives between the resolution and the achievable luminous flux. Increasing the resolution causes a reduction in luminous flux per pixel and vice versa. The only way to avoid the negative consequences of the luminance limit of the phosphor, without the Reducing resolution is to distribute the luminous flux over several laser beams.
- Adjustment effort allows high resolution at high luminous flux. This object is achieved according to the characteristics of the independent
- the object is achieved by a lighting device comprising a plurality of semiconductor primary light sources for
- Beam deflecting deflected primary light beams is illuminated, wherein - in at least one
- Primary light beams also called “single spots”.
- the at least one phosphor body are spatially distinguishable on the at least one phosphor body, a composite of the individual light spots total luminous spot depending on the Strahlumlenk ein the Strahlumlenk acquired on the at least one phosphor body is locally distinguishable and at least one on the at least one
- Fluorescent body falling primary light beam during operation of the lighting device is selectively switched on and off.
- this lighting device it becomes possible to achieve a high resolution, since not only a position of the total light spot on the phosphor body locally
- Primary light beams can be varied by switching on and off, e.g. also depending on a position of the total light spot. Furthermore, such an activation and adjustment of the beam deflection device and / or the semiconductor primary light sources is simplified.
- the individual primary light beams also referred to as “single primary light beams” or “individual beams” can now be directed onto the phosphor with a relatively low adjustment effort, without reducing the resolution or the luminous flux.
- Another advantage is that the adjustment of the individual semiconductor primary light sources to each other no longer needs to be made at the system level, but can already take place at the manufacturer of the semiconductor primary light sources.
- the total light spot (and thus also a composite of the individual primary light beams total light beam) is thus segmented by the individual beams or
- Beam deflecting the Strahlumlenk might - be a single contiguous spot or have several spatially separated luminous portions.
- the spatially separated luminous sections can each be composed of several individual spots again.
- At least one total light spot which is composed of all light spots of the individual primary light beams, can be uniformly moved on the phosphor body by means of the beam deflection device, while at least some individual light spots
- Primary light beams are selectively switched on and off.
- a "beam deflection position” may in particular be understood to mean a position of the beam deflection device in which an incident primary light beam is deflected in a predetermined spatial direction.
- a beam redirecting position may be, for example, a mechanical position (e.g., an angular position or a lift position) and / or an electrical or electronic adjustment (e.g., a voltage level or code train).
- the selective turn-on and turn-off capability of at least one semiconductor primary light source comprises that of several
- Semiconductor primary light sources at least one semiconductor primary light source individually and / or in groups switched on and off. It's one for one especially
- At least one semiconductor primary light source may be - e.g. depending on a given application - individually or in groups on and off
- the selective turn-on and turn-off capability may include having the associated semiconductor primary light source selectively generate or not generate a primary light beam
- the selective turn-on and turn-off capability may also include a generated one
- Primary light beam is selectively passable or blockable.
- the blocking can be achieved, for example, by means of respective shutters or shutters.
- the phosphor body can be present or used in a reflective arrangement and / or in a transmitting arrangement. In the reflective arrangement, the light emitted from the phosphor body is used as the useful light radiated from the side of the phosphor body to which the primary light beams are incident as well. In the transmissive arrangement, the light emitted from the phosphor body is used as the useful light that is incident from that with respect to the incident light
- Primary light rays facing away from the phosphor body is emitted.
- transmissive arrangement Especially in a transmissive arrangement are more
- optical elements such as dichroic mirrors, to increase the efficiency feasible.
- the phosphor body has at least one phosphor which is suitable for at least partially converting or converting incident primary light into secondary light of different wavelengths. If there are multiple phosphors, these secondary lights will be like each other
- the wavelength of the secondary light may be longer (so-called “Down Conversion”) or shorter (so-called "Up
- blue primary light e.g., blue primary light
- Wavelength of about 450 nm by means of a phosphor in green, yellow, orange or red secondary light being transformed.
- Wavelength conversion or wavelength conversion a mixture of secondary light (e.g., yellow) and unconverted primary light (e.g., blue) is emitted from the phosphor body which may serve as useful light (e.g., white).
- secondary light e.g., yellow
- unconverted primary light e.g., blue
- the phosphor body may be a (flat) phosphor plate, for example in the form of a ceramic.
- Phosphor plate can at least at the by the
- the phosphor chip can be a constant or a
- the phosphor wafer can also be non-planar, for example arched or undulated, at least on the surface that can be irradiated by the primary light beams.
- the phosphor body can be a single, coherently produced phosphor body, which is also known as
- one-piece phosphor body can be called.
- the phosphor body can be made separately
- sub-segments or sub-phosphor bodies may have the same or different conversion characteristics (eg, in terms of a degree of conversion, a phosphor used, etc.). If there are a plurality of partial phosphor bodies, at least two of them can adjoin one another closely, for example abutting one another.
- the phosphor body can be, for example, a rectangular or a round phosphor body.
- the phosphor body may have a largest diameter of 20 mm or less. For example, a rectangular phosphor body may have edge dimensions of 5 x 20 mm or 20 x 5 mm.
- Fluorescent bodies are locally distinguishable, may also be referred to as a "lateral disjoint" or just as one
- Arrangement comprises that adjacent light spots laterally or laterally separated from each other or only partially
- a center of a luminous spot can be understood to be a geometric center of gravity (possibly weighted with the luminance).
- At least one phosphor body are spatially distinguishable and at least two primary light beams or individual spots on the at least one phosphor body lie directly on top of each other. "Directly superimposed"
- Directly superimposed single spots may have the same or different characteristics (e.g., diameter).
- An edge of a light spot may, for example, enclose the area in which a luminance of at least 5%, in particular of at least 10%, in particular of at least 1 / e (corresponding to approx. 13.5%), in particular 1 / e
- the at least one semiconductor primary light source comprises at least one laser, for example at least one laser diode.
- the laser diode may be in the form of at least one individually gehausten laser diode or in ungehauster form, z. B. as at least one chip or "die" present.
- a plurality of laser diodes may be present as at least one multi-die package or as at least one laser bar.
- the multi-laser package PLPM4 450 from Osram Opto Semiconductors can be used.
- Several chips can be mounted on a common substrate ("submount"). Instead of a laser, for example, at least one light emitting diode
- Semiconductor primary light source has at least four, in particular at least 20, in particular at least 30, in particular at least 40, semiconductor primary light sources.
- Primary light beams to emit or emit parallel to each other can be e.g. by attaching the semiconductor primary light sources on one or more common carriers. Especially for this
- Development can all semiconductor primary light sources on a common carrier, in particular printed circuit board, be arranged, for example, as at least one multi-die package or as at least one laser bar.
- the semiconductor primary light sources are arranged in a regular surface pattern, in particular in a symmetrical
- Matrix pattern or in a hexagonal pattern gives the advantage that a whole of all during one
- Fluorescent body in a simple manner also regularly, in particular symmetrically, may be formed or forms a regular pattern there, for example, a matrix pattern.
- undesirable luminance jumps or undesired luminance gaps between adjacent ones can be avoided
- Luminous spots are avoided.
- the plurality of semiconductor primary light sources may be followed by a first optic in the form of a "primary optic", which comprises the single primary light beams emitted by the semiconductor primary light sources, e.g. collimated.
- Primary optics and the beam deflecting a second optics may be arranged with at least one optical element.
- a third optical system with at least one optical element can be arranged in the light path between the beam deflection device and the at least one phosphor body.
- the fourth optics can be optically connected downstream of the at least one phosphor body with at least one optical element for beam shaping of the useful light.
- the third optics and the fourth optics may have at least one common optical element, for example at least one optical element for focusing the primary light beams on the phosphor body and for coupling out the latter
- the beam deflecting device at least one by means of the primary light beams
- This embodiment has the advantage that it is relatively simple, compact, durable and inexpensive feasible.
- the at least one movable mirror may in particular at least one rotatable or pivotable mirror
- Movable mirror is exactly a mirror, which allows a particularly simple structure. Such a mirror is
- the at least one movable mirror comprises a plurality of movable mirrors. These can deflect the primary light beams, for example, into different spatial directions, e.g. for a line-wise or column-wise construction of the Lichtabstrahlmusters.
- the at least one illuminatable by means of the primary light beams movable mirror each comprises a rotatable mirror per axis of rotation, for example, a rotatable mirror for the x-axis and a
- Image construction is then enabled, for example, by having a total spot in a second image direction (e.g., one image height or one image width) so large (e.g., as high or so wide) that it occupies the entire second
- Image direction occupies.
- the resolution in the second image direction via the on or off circuit of the individual beams can be done.
- the semiconductor primary light sources may then be e.g. be arranged in a row.
- possible embodiments include a field of vertically displaceable piston-like MEMS (mirror-like) mirrors or e.g. an LCD-based phase shift field. It is still a development that the second optics is arranged and arranged to at least two of the
- Semiconductor primary light sources emitted single primary light beams at different angles to the at least one mirror to direct. This can be a
- the second optics can in particular
- the second optics is set up and arranged, two individual primary light beams emitted by the semiconductor primary light sources parallel but laterally disjointly directed to the at least one mirror.
- the at least one movable mirror comprises at least one micromirror.
- the micromirror may be a MEMS device, which may be referred to as a MEMS mirror. At least one
- Micromirror may have a single continuous movable mirror surface. At least one micromirror may have a plurality of - in particular independently of each other - movable mirror surfaces. It may then be present in particular as a micromirror array, e.g. as a DMD ("Digital Micromirror Device").
- a micromirror (or a
- micromirrors can resonant or non-resonant with respect to its vibrational behavior
- Angular positions of a micromirror can be sinusoidal or non-sinusoidal, in particular with a temporally linear or a temporally nonlinear deflection.
- MEMS mirrors have a deflection of +/- (10 ° ... 12 °).
- At least one micromirror can be actuatable, in particular pivotable, for example stepwise or steplessly.
- the respective angular positions correspond to the respective positions of a total
- the at least one associated actuator e.g., a piezo actuator with or without
- Hub Reinforcement may be formed or used as a stepper motor.
- at least one micromirror can be continuously rotatable by means of a drive shaft, namely between two end positions or spinning.
- the actuator can then be an electric motor.
- a stepwise pivotable mirror and a continuously rotatable mirror Mirror a structure similar to a so-called “flying spot" - method can be achieved.
- Primary light beams composite total light beam is illuminated web-like or the total light spot
- web-like on the phosphor body is movable or "scannable".
- the sheet-like movement may be e.g. a line or
- Lissaj ousfigur his The inverse of the time taken to sweep a row or column may be referred to as a horizontal scan frequency or line rate or vertical scan frequency or line rate.
- a pulse rate of the semiconductor primary light sources may be correspondingly higher than the scan frequency.
- Fluorescent body is also referred to as "image buildup time", the associated frequency as “image buildup frequency”.
- the image-building frequency is advantageously at least 50 Hz, particularly advantageously at least 75 Hz, even more particularly advantageously at least in a far-field
- Fluorescent body can be achieved only by switching on and off of the individual primary light beams are. Also, a particularly high resolution can be achieved.
- Total light spots may include, can overlay.
- a high resolution and a high temporal integrated luminance are particularly easy for e.g. allows a line or column-like sweeping or scanning of the phosphor body. It's one of a kind for a mechanically very simple
- Movement mechanism at least one mirror advantageous embodiment that - to different Angular positions belonging - total light spots are spatially separated.
- Phosphor bodies are generated and other total spots are made locally distinguishable or disjoint on the phosphor body (i.e., only partially
- Beam deflection position of the beam deflector (e.g., from the angular position of the at least one moveable mirror).
- the total light spot has a maximum achievable planar extent which does not exceed 20% of a corresponding extent of the phosphor body or of its illuminable area
- Beam deflecting means e.g., the angular position of the at least one mirror
- Beam deflecting means may be located within a
- Illumination cycle or generate within a picture setup time a plurality of disjoint total light spots, which together more than 20% (in particular 10 2% or 1%) of
- Diameter eg in a total light spot with a round basic shape
- an edge length or a diagonal eg in a total light spot with a rectangular or hexagonal basic shape
- the extent and / or the shape of the total luminous spot may be given in particular by the extent and / or the shape of an enveloping contour of the total luminous spot.
- the enveloping contour may be the imaginary line of minimal length surrounding all the individual spots of an overall spot. It surrounds a closed area in which all individual spots are located.
- the associated enveloping contour may be rectangular
- the shape of its enveloping contour has a certain (e.g., rectangular, hexagonal, circular, oval, freeform, etc.) basic shape, may include that at least part of the edges are curved, the basic shape is e.g. has rounded edges.
- Lighting device is coupled to at least one sensor (for example, with a camera) and the individual
- Primary light beams or the associated light spots depending on a measured value of the at least one sensor can be switched on and off. This can be done at one
- Adaptation of the light emission pattern may also be referred to as “dynamic” or “active” adaptation.
- Possibility of dynamic adaptation consists in switching on or off of individual primary light beams or
- Lighting device is a projection device.
- the far field can e.g. Designate a space area in front of the lighting device from a distance of about one meter, in particular from a distance of about five
- Lighting device is a vehicle headlight or an effect lighting device (e.g., a stage or a disco lighting).
- the lighting device may also be an image projector.
- the associated vehicle may be a motor vehicle such as a passenger car, a truck, a bus, a motorcycle, etc., an aircraft such as an airplane or a helicopter or a
- the lighting device can
- the lighting device basically to another lighting device of a vehicle, for example, a tail light.
- the lighting device can be a safety function
- the radiation emitted by the illumination device is kept within a photobiologically harmless level, for example, by a structural design and / or by switching off the semiconductor primary light sources
- the automatic shutdown can e.g.
- the damage may include damage or removal of the phosphor body.
- the damage can be caused by an accident.
- Fig.l shows a sectional view in cross-sectional view of a lighting device according to a first embodiment
- Fig. 2 shows a total spot on a
- Fig.5 shows yet another possible plot of a local luminance distribution
- Figure 6 shows a front view of a phosphor body with a possible path of the total light spot
- FIG. 7 shows a front view of a phosphor body with a representation of temporally successive
- FIG 9 shows a sectional illustration in cross-sectional view of a lighting device according to a third exemplary embodiment.
- Fig.l shows a sectional view in cross-sectional view of a lighting device 1 according to a first
- the primary light beams Pij are emitted in parallel with each other.
- the individual primary light beams Pij pass through a first optical system 3 which allows individual beam shaping of the individual primary light beams Pij, e.g. a beam collimation, for example for individual "parallel alignment" of all individual primary light beams Pij.
- the first optic 3 can also be referred to as "primary optic".
- the first optics 3 is followed by a common for all primary light beams Pij second optics 4, which the
- Primary light rays Pij spatially closer together and possibly also reduces the cross-sectional area and directs to a first mirror in the form of a micromirror 5.
- the second optic 4 may also be referred to as a "telescope optic" become.
- the primary light beams Pij can hit the micromirror 5 in parallel or at an angle to one another.
- the micromirror 5 can, for example stepless or
- two axes of rotation here e.g. could lie perpendicular to the sheet plane and in the sheet plane parallel to a mirror surface of the micromirror 5. He can with respect to each of the two axes of rotation several
- the deflection angle of the micromirror 5 may be e.g. in both directions up to +/- 12 °.
- the micromirror 5 directs the now tight in one
- a third optical system 6 to a rigid deflection mirror 7 to.
- selected total light beams Pges belonging to different angular positions of the micromirror 5 are shown by way of example, which can be generated in temporal succession during operation of the lighting device 1.
- the deflection mirror 7 directs the individual primary light beams Pij or the total light beam Pges composed thereof through a fourth optical system 8 onto a phosphor body 9.
- a diameter of the fourth optical system 8 amounts to
- Automotive applications preferably 70 mm or less.
- the phosphor body 9 is here as a plane
- Pad can also act as a heat sink.
- the phosphor body 9 can therefore be illuminable simultaneously in an angular position of the micromirror 5 at most by all the primary light beams Pij. However, one or more, in particular also dependent on the angular position Primary light beams Pij be turned off or not
- the blue primary light beams Pij may be illuminated by the phosphor (eg, a phosphor) in the phosphor body 9
- Phosphor of cerium-doped yttrium-aluminum garnet which at least partially converts blue primary light into yellow secondary light
- the phosphor body 9 radiates here from the same side on which the primary light beams Pij impinge, the
- Useful light N ab which is composed of a primary light component P and a secondary light component S mixed
- the fourth optics 8 also serves as a coupling-out optics or as part of a
- the useful light N can be e.g. be a blue-yellow or white mixed light.
- the deflection mirror 7 may belong to the third optics 6 and / or the fourth optics 8, or may not constitute a component of these optics 6, 8.
- both mirrors 5 and 7 can be rotatable mirrors with different axes of rotation, in particular micromirrors.
- the mirror 5 may then only be rotatable about a first axis of rotation D1 and the mirror 7 may be rotatable only about a second axis of rotation D2.
- the mirror 7 of the micromirrors and the mirror 5 can be the rigid deflection mirror. This provides the advantage that the third optic 6 can also be omitted.
- Micromirror 5 (or alternatively, the mirror 5 and / or 7, etc.) can all fall on the micromirror 5 Primary light beams Pij are moved together, which also results in a corresponding movement of the associated light spots Fij on the phosphor body 9. This corresponds to a changed distraction of one of the individual
- Primary light beams Pij composite total light beam Pges and the total light spot Fges. This is one of the individual spots Fij the respective
- Fluorescent body 9 and are arranged disjoint to each other on the phosphor body 9.
- the primary light beams Pij can be switched on and off individually or in groups during operation of the lighting device 1.
- FIG. 2 shows a frontal view of the phosphor body 9 with all simultaneously producible individual light spots Fij.
- the individual spots Fij form a total spot Fges on the phosphor body 9 of the
- Lighting device 1 The light spots Fij are generated by a respective primary light beam Pij.
- the spots Fij are locally distinguishable on the phosphor body 9 and here e.g. practically not overlapping.
- the spots Fij form - as well as the
- the extent and / or the shape of the total luminous spot Fges is determined by an enveloping contour U, all
- Single spots Fij surrounds at minimal length. she surrounds a closed area in which all the individual spots Fij lie.
- the associated enveloping contour has a rectangular basic shape, which may possibly have rounded corners. If all the light spots Fij are switched on, the associated total light spot Fges can also be referred to as the "maximum" total light spot Fges. 3 shows a plot of a local
- Luminance distribution of a row j of the spots Fij with the columns i 1 to 5 of Figure 2 and the resultant by superposition total luminous spot Fges.
- the spots Fij are arranged disjoint, since their
- Luminous tips / or their geometric centers do not coincide.
- the spots Fij are also local to each other
- Luminous spots Fij correspond.
- the individual spots Fij overlap or overlap here in contrast to Figure 3 partially, if that
- Criterion of 1 / e of the maximum luminance L v is assumed as the value of an edge of the light spots Fij. in the Compared to Figure 3, the light spots Fij have the same luminance profile or the same shape of the
- Luminance distribution at a different lateral distance from each other This applies analogously to the individual primary light beams Pij at the location of the phosphor body 9.
- the spots Fij overlap even more here than in Figure 4 (but not quite), so that the overall spot Fges no longer shows pronounced local luminance maxima.
- the light spots Fij have a wider luminance profile at the same distance from one another in comparison to FIG. Fig.5 differs from Fig.3 thus both by the distance and by the luminance profile of
- FIG. 6 shows a front view of a phosphor body 9 with a possible, purely exemplary path of the total light spot Fges.
- the total light spot Fges is moved by the pivoting or rotation of the micromirror 5 in succession over the phosphor body 9 such that the phosphor body 9 can be illuminated line by line by the total light spot Fges. This can also be called a line scan
- the micromirror 5 (or alternatively movable mirrors 5 and / or 7) has at least (r x s) possible angular positions.
- the micromirror 5 can be infinitely or practically infinitely variable, so that basically any other angular positions can be taken.
- the total spots Fges at the positions k, 1 (which may also be referred to as Fges-kl in the following) are advantageously directly adjacent to one another but not overlapping or overlapping, but are spatially separated from one another.
- the amount of time required to scan the total spot Fges over all positions 1, r and 1, s is also referred to as the "build-up time", the associated frequency being called the "build-up frequency”.
- the image-building frequency is advantageously at least 50 Hz, particularly advantageously at least 75 Hz, particularly advantageously at least 100 Hz, very particularly advantageously at least 200 Hz.
- the individual light spots Fij form a ([i * k] x [j * 1]) matrix pattern on the phosphor body 9. Since the individual light spots Fij can be switched on and off individually, the result is the possibility of a high-resolution matrix field from individual spots Fij and thus also a corresponding Lichtabstrahlmuster of the phosphor body. 9
- the lighting device 1 may, for example, a
- Micro-mirror 5 with at least one on or off state of the single light spots Fij or the total light spot Fges linked.
- each single spot Fij a Ein standing. Off state can be assigned individually or in groups.
- the relationships between the angular positions and the respective on and off states may be different for different applications. So can the
- Lighting device 1 serve as a vehicle headlamp, wherein in the look-up table, for example, different links for a low beam for
- the lighting device 1 is coupled to at least one sensor (for example a camera) and the individual light spots Fij and / or the total light spot Fges (or the corresponding primary light beams Pij or
- Pges depending on a measured value of the at least one sensor and can be switched off. For example, in a moving vehicle, when a pedestrian or an animal was detected by a front camera, those can
- Luminous spots Fij are turned off, which illuminate in the associated Lichtabstrahlmuster this object. This reduces glare of the object.
- Primary beam Pij is generally possible.
- Another possibility of a situation-dependent adaptation may consist in a variation of the turn-on pattern of the individual light spots Fij as a function of a value of an outside light sensor.
- FIG. 7 shows a front view of a phosphor body 9 with a representation of positions in time
- the total spots Fges- (k + t) l are constructed purely by way of example as a 3x3 matrix of single spots Fij.
- the total spot Fges- (k + 2) l is also generated by turning on all possible nine individual spots Fij. Within the selected area, therefore
- the micromirror 4 has been further rotated by one more angular position, so that now an overall light spot Fges- (k + 3) l is generated, which is also entirely within the selected range.
- the micromirror 4 has been further rotated by one more angular position, so that now a total spot Fges- (k + 4) l is generated, which is also entirely within the selected range.
- Micromirror 4 has been further rotated by one more angular position, so that now a total spot Fges- (k + 5) l is generated, which is also entirely within the selected
- micromirror 4 is analogous to one more each
- the total light spots Fges-kl can also be individually selected from single light spots Fij
- Any scanning directions are generated on the phosphor body 9, possibly even several times at the same position within a screen setup time.
- FIG. 8 shows a sectional view in cross-sectional view of a lighting device 11 according to a second
- the illumination device 11 differs from the illumination device 1 in particular in that the, for example, white or whitish useful light N, that of the mixture of converted secondary light S and not
- Transmittive or “transmissive” arrangement is also the fourth optics 8 (which is indicated here by a lens) on the useful light N emitting side of the phosphor body 9. Also here on the
- Deflection mirror 7 omitted, but in principle also in the lighting device 1 is possible.
- FIG. 9 shows a sectional view in cross-sectional view of a lighting device 21 according to a third
- the lighting device 21 differs from the
- Lighting device 11 characterized in that the third optics 6 is dispensed with. While in the lighting devices 1 and 11 by the third optics 6, inter alia, a Focusing the incident on the phosphor body 9 primary light beams Pij takes place, this takes over in the
- Different total primary beams Pges can generate respective different total spots Fges-kl and therefore also be referred to as total primary beams Pges-kl.
- the primary light rays Pij also all meet obliquely on the phosphor body. This may be inclined so that the primary light beams Pij impinge on him at least approximately at a Brewster angle.
- a phosphor body may generally be illuminatable by a plurality of sets each of a plurality of semiconductor primary light sources and at least one movable mirror as described above.
- the illuminable surfaces of the phosphor body associated with different sets can be
- a common surface of the phosphor body may be illuminated by the sets temporally and / or locally offset.
- a phosphor body can by different sets in particular
- a phosphor body can be illuminated in the same direction by different sets, in particular on the same track.
- a column-like scanning or any desired scanning can be used analogously to a line-like scanning or lighting sequence.
- "on”, “an”, etc. may be taken to mean a singular or a plurality, in particular in the sense of "at least one” or “one or more”, etc., as long as this is not explicitly excluded, eg by the expression “exactly a "etc.
- a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015106312.3A DE102015106312A1 (de) | 2015-04-24 | 2015-04-24 | Beleuchtungsvorrichtung mit Halbleiter-Primärlichtquellen und mindestens einem Leuchtstoffkörper |
| PCT/EP2016/059077 WO2016170154A1 (de) | 2015-04-24 | 2016-04-22 | Beleuchtungsvorrichtung mit halbleiter-primärlichtquellen und mindestens einem leuchtstoffkörper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3286493A1 true EP3286493A1 (de) | 2018-02-28 |
Family
ID=55913602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16720770.3A Withdrawn EP3286493A1 (de) | 2015-04-24 | 2016-04-22 | Beleuchtungsvorrichtung mit halbleiter-primärlichtquellen und mindestens einem leuchtstoffkörper |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20180142842A1 (de) |
| EP (1) | EP3286493A1 (de) |
| CN (1) | CN110023672A (de) |
| DE (1) | DE102015106312A1 (de) |
| WO (1) | WO2016170154A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018021108A1 (ja) * | 2016-07-29 | 2018-02-01 | パナソニックIpマネジメント株式会社 | 発光装置及び照明装置 |
| JP6761600B2 (ja) * | 2017-01-05 | 2020-09-30 | 大日本印刷株式会社 | 照明装置 |
| US10690311B2 (en) * | 2017-01-27 | 2020-06-23 | Maxell, Ltd. | Headlight device |
| DE102017204775A1 (de) * | 2017-03-22 | 2018-09-27 | Robert Bosch Gmbh | Scheinwerfer für ein Fahrzeug und Herstellungsverfahren für einen Scheinwerfer |
| DE102017204819A1 (de) | 2017-03-22 | 2018-09-27 | Robert Bosch Gmbh | Scheinwerfer für ein Fahrzeug, Herstellungsverfahren für einen Scheinwerfer und Verfahren zum Beleuchten zumindest eines Teils einer Umgebung eines Fahrzeugs |
| US10295139B2 (en) * | 2017-08-23 | 2019-05-21 | Valeo North America, Inc. | Headlamp road-writing systems |
| WO2019044374A1 (ja) * | 2017-09-01 | 2019-03-07 | パナソニックIpマネジメント株式会社 | 光源装置および投光装置 |
| EP4394242A1 (de) * | 2022-12-28 | 2024-07-03 | ZKW Group GmbH | Verfahren zur betriebsoptimierten ansteuerung einer ablenkeinheit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150270682A1 (en) * | 2014-03-24 | 2015-09-24 | Osram Gmbh | Light source arrangement |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010028949A1 (de) | 2010-05-12 | 2011-11-17 | Osram Gesellschaft mit beschränkter Haftung | Scheinwerfermodul |
| DE102012203442B4 (de) * | 2012-03-05 | 2021-08-05 | Coretronic Corporation | Beleuchtungsvorrichtung mit einer pumplaserreihe und verfahren zum betreiben dieser beleuchtungsvorrichtung |
| CN102662301B (zh) * | 2012-03-11 | 2015-05-27 | 深圳市光峰光电技术有限公司 | 光源系统及相关投影系统 |
| FR2993831B1 (fr) | 2012-07-27 | 2015-07-03 | Valeo Vision | Systeme d'eclairage adaptatif pour vehicule automobile |
| WO2014045178A1 (en) * | 2012-09-20 | 2014-03-27 | Koninklijke Philips N.V. | Lighting device, lens, system and method |
| AT514834B1 (de) * | 2013-02-07 | 2017-11-15 | Zkw Group Gmbh | Scheinwerfer für ein Kraftfahrzeug und Verfahren zum Erzeugen einer Lichtverteilung |
| AT513916B1 (de) | 2013-02-07 | 2015-04-15 | Zizala Lichtsysteme Gmbh | Scheinwerfer für ein Kraftfahrzeug und Verfahren zum Erzeugen einer Lichtverteilung |
| JP6186752B2 (ja) * | 2013-03-01 | 2017-08-30 | カシオ計算機株式会社 | 光源装置及び投影装置 |
| DE102013226622A1 (de) * | 2013-12-19 | 2015-06-25 | Osram Gmbh | Leuchtvorrichtung mit Leuchtstofffläche |
-
2015
- 2015-04-24 DE DE102015106312.3A patent/DE102015106312A1/de not_active Withdrawn
-
2016
- 2016-04-22 EP EP16720770.3A patent/EP3286493A1/de not_active Withdrawn
- 2016-04-22 US US15/568,496 patent/US20180142842A1/en not_active Abandoned
- 2016-04-22 WO PCT/EP2016/059077 patent/WO2016170154A1/de not_active Ceased
- 2016-04-22 CN CN201680023849.8A patent/CN110023672A/zh active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150270682A1 (en) * | 2014-03-24 | 2015-09-24 | Osram Gmbh | Light source arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016170154A1 (de) | 2016-10-27 |
| DE102015106312A1 (de) | 2016-10-27 |
| CN110023672A (zh) | 2019-07-16 |
| US20180142842A1 (en) | 2018-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016169772A1 (de) | Beleuchtungsvorrichtung mit halbleiter-primärlichtquellen und mindestens einem leuchtstoffkörper | |
| EP3286493A1 (de) | Beleuchtungsvorrichtung mit halbleiter-primärlichtquellen und mindestens einem leuchtstoffkörper | |
| EP3330597B1 (de) | Primäroptik, sekundäroptik, modul, anordnung, fahrzeugscheinwerfer und scheinwerfersystem | |
| EP3140591B1 (de) | Erzeugen eines lichtabstrahlmusters in einem fernfeld | |
| EP2851611B1 (de) | Scheinwerfermodul | |
| AT514834B1 (de) | Scheinwerfer für ein Kraftfahrzeug und Verfahren zum Erzeugen einer Lichtverteilung | |
| EP3152479B1 (de) | Beleuchtungseinrichtung | |
| DE102015222188B3 (de) | Lichtmodul für einen Fahrzeugscheinwerfer und Kraftfahrzeugscheinwerfer mit einem solchen Lichtmodul | |
| AT517306B1 (de) | Scheinwerfer für Kraftfahrzeuge | |
| DE102013226622A1 (de) | Leuchtvorrichtung mit Leuchtstofffläche | |
| EP3543593B1 (de) | Beleuchtungsvorrichtung für einen kraftfahrzeugscheinwerfer | |
| WO2015018729A1 (de) | Beleuchtungsanordnung | |
| DE102013226639A1 (de) | Erzeugen eines Lichtabstrahlmusters in einem Fernfeld | |
| WO2017097504A1 (de) | Lichterzeugung mit leuchtdiode und laser | |
| DE102008044967A1 (de) | Beleuchtungsvorrichtung mit mehreren Halbleiterlichtquellen | |
| DE102016214513A1 (de) | Beleuchtungsvorrichtung | |
| DE102015221049A1 (de) | Fahrzeug-Beleuchtungsvorrichtung | |
| WO2016059180A1 (de) | Beleuchtungsanordnung mit einer blende bestehend aus einer vielzahl von öffnungen | |
| DE102016216364A1 (de) | Beleuchtungssystem, fahrzeugscheinwerfer und verfahren zum steuern eines beleuchtungssystems | |
| DE102013226645A1 (de) | Erzeugen eines Lichtabstrahlmusters durch Beleuchten einer Leuchtstofffläche | |
| DE102017213103A1 (de) | Beleuchtungssystem und scheinwerfer | |
| DE102016216616A1 (de) | Beleuchtungssystem und Fahrzeugscheinwerfer mit einem Beleuchtungssystem | |
| DE102014002308B4 (de) | Beleuchtungsvorrichtung für ein Kraftfahrzeug sowie dazugehöriges Verfahren | |
| DE102017101001A1 (de) | Anordnung, scheinwerfer und gruppe von scheinwerfern | |
| WO2016087098A1 (de) | Beleuchtungsvorrichtung, scheinwerfermodul und beleuchtungsverfahren |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20171123 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: F21S 8/10 20181130AFI20161101BHEP |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: F21S 8/10 20060101AFI20161101BHEP |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20200213 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OSRAM GMBH Owner name: ROBERT BOSCH GMBH |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH Owner name: OSRAM GMBH |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20200624 |