Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V5/00—Refractors for light sources
  • F21V5/008—Combination of two or more successive refractors along an optical axis
• • 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
  • F21S41/16—Laser 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
  • F21S41/10—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
  • F21S41/65—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
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B5/00—Optical elements other than lenses
  • G02B5/32—Holograms used as optical elements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N9/00—Details of colour television systems
  • H04N9/12—Picture reproducers
  • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
  • H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N9/00—Details of colour television systems
  • H04N9/12—Picture reproducers
  • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
  • H04N9/3141—Constructional details thereof
  • H04N9/315—Modulator illumination systems
  • H04N9/3158—Modulator illumination systems for controlling the spectrum
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
  • G03H1/30—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
  • G03H2001/306—Tiled identical sub-holograms

Definitions

• the invention relates to a headlight module, which comprises a radiation source, a beam steering device and a support material
• the phosphor is excitable by means of an emitted from the radiation source electromagnetic radiation for emitting light.
• Headlight modules from the field of automotive technology allow the choice between several, well-defined light distributions, such as dipped beam, high beam and fog light.
• so-called adaptive headlamp systems are spreading, which expand the selection of light distributions and allow, for example, dynamic cornering light, highway, city and bad weather light.
• the selection of the light distributions can be made depending on the situation by a controller in the motor vehicle.
• active headlight modules are so-called active headlight modules. These are not predefined
• Such active headlamp modules can be realized essentially in two principal ways.
• subtractive systems the entire generated luminous flux is passed through a matrix of optically active elements, for example LCD, LCoS, DMD. Bright areas are created by allowing the luminous flux to pass through. For dark areas, the luminous flux is absorbed by means of the optically active elements, for example LCD or LCoS, or
• Additive systems illuminate the scene via matrix arrangements of
• Light sources such as LED, where the individual light sources can be switched on and off as needed. In an ideal additive system, therefore, the entire amount of light generated is always used.
• the necessary cooling of the light source matrix in such a system typically limits the size, the maximum brightness and / or the achievable resolution.
• One way to spatially separate light generation and distribution in an additive active headlamp module is to use a stimulable phosphor with electromagnetic radiation, for example laser radiation.
• the phosphor is scanned here with the stimulating radiation and then imaged using projection optics. Described is such a principle, for example, in DE 10 2010 028 949 AI.
• Projection optics are possible only under optical losses, since a significant portion of the radiated light can not be captured by the projection optics.
• Radiation direction behind the phosphor is arranged at least one optical element having second optical arrangement.
• the emission angle of the phosphor can be selectively influenced such that the yield of the light emitted by the phosphor light can be increased.
• the first optical arrangement in the radiation direction in front of the phosphor and thus between the beam steering device and the phosphor makes it possible that regardless of the position of the
• Beam directing device the rays at a right angle to the
• Fluorescent can impinge.
• the second optical arrangement in the direction of radiation behind allows
• Phosphor improved collimation d. H. a guide in a straight line, the light emanating from the phosphor. A diffuse radiation of the light from the phosphor can be prevented thereby.
• the at least one optical element can be, for example, a converging lens, a reflective surface element, a microlens array or a
• the condenser lens also collimator lens, convex lens or positive lens, is a spherical lens having positive refractive power. Rays incident on the convergent lens at different angles can be parallelized.
• a reflective surface element may be formed with or without a microstructure.
• Called microlens array is an array of multiple lenses that can be both rotationally symmetric and cylindrical. Adjacent lenses of a microlens array are arranged with as little or no gap as possible. A microlens array may be formed both convex and concave. Microlens arrays can be made of glass, plastic or silicone. The size of the individual lenses of a microlens array is preferably between a few microns to a few millimeters. Since the radiation source electromagnetic radiation, preferably in the form of laser light,
• narrowband laser light emits which over the
• holographic elements can be used as optical elements.
• transmission holograms which can replace lenses
• reflection holograms which can replace mirrors
• the reflection holograms can preferably be used as phase holograms, in particular volume or surface holograms.
• photoresists or photopolymers which are suitable for
• Manufacturing methods such as embossing or contact copying, are suitable.
• the first and / or the second optical arrangement may have exactly one such optical element or also two or more such optical elements, with two or more optical elements in one
• the optical elements of the same type may be formed or even optical elements of different types in one
• Optics arrangement can be arranged.
• the first optical arrangement comprises a plurality of optical elements, wherein the plurality of optical elements may be a converging lens, a concave microlens array and a convex microlens array.
• Optics arrangement then preferably has three different, in
• Radiation direction successively arranged optical elements is used in
• point sources can be collimated again with the second optical arrangement arranged behind the phosphor in the radiation direction in order to be able to be imaged efficiently into the far field.
• the first optical arrangement or the second optical arrangement has both a convex microlens arrangement and a concave microlens arrangement as optical elements, then these may be formed together as one component, so that a combination of a convexly formed and a concave microlens arrangement in only one can be made as a component formed element.
• the number of components to be installed in the headlight module can be reduced, whereby the assembly cost can be reduced.
• the first optical arrangement has a plurality of optical elements, wherein the plurality of optical elements may be a first holographic element and a second holographic element.
• the first arranged in the radiation direction holographic element can serve to deflect and focus the radiation emitted by the beam steering device radiation.
• the second holographic element arranged in the radiation direction behind the first holographic element can be used to collimate the light emitted by the first holographic element
• the first holographic element and the second holographic element can be formed together as a component, wherein the first holographic element and the second holographic element can then be connected to one another via a carrier layer.
• the carrier layer which is preferably transparent, may be in the form of glass, for example.
• the second optical arrangement preferably has a microlens arrangement as the optical element.
• Microlens arrangement of the second optical arrangement is preferably formed convex.
• projection optics are preferably arranged.
• Luminescent downstream second optics emitted radiation can be collected using the projection optics and mapped into the far field.
• the projection optics preferably has a plurality of collecting lenses arranged one behind the other.
• the substrate on which the phosphor is disposed is
• Optics issued radiation can pass through the substrate to be introduced into the phosphor can.
• the phosphor is preferably not arranged directly on the carrier material, but a reflective layer may be arranged between the carrier material and the phosphor. Can be used the headlight module according to the invention
• Fig. 1 is a schematic representation of a headlamp module according to a first embodiment of the invention.
• Fig. 2 is a schematic representation of a headlamp module according to a second embodiment of the invention.
• the headlight module 100 has a radiation source 10 which is designed to emit electromagnetic radiation, for example laser light, in particular blue laser light.
• the electromagnetic radiation and in particular the path of the electromagnetic radiation is represented by the directional arrows.
• the radiation source 10 may be, for example, a laser diode, wherein the radiation source 10 emits the radiation directed and focused in the form of a laser light beam.
• the radiation of the radiation source 10 strikes a beam steering device
• the beam steering device 11 has a mirror device
• the beam steering device 11 can preferably be pivoted via an electrical control in two spatial axes.
• the incident on the beam steering device 11 laser light beam in dependence of the electrical control of the Spiegellenkvorraum 11 are deflected in a desired direction.
• beam steering device 11 and two Strallenkungsvortechniken 11 can be used, which are pivotable in each one spatial direction.
• the deflected by the beam steering device 11 electromagnetic radiation of the radiation source 10 strikes a stimulable by means of electromagnetic radiation phosphor 12, which is arranged on a substrate 13.
• the beam steering device 11 preferably has a drive which makes it possible to deflect the radiation emitted by the radiation source 10 by means of the beam steering device 11 in such a way that different regions of the phosphor 12 can be excited one after the other.
• the driving pattern of the beam steering device 11 executed so that from an interaction of temporal
• Fluorescent 12 the human eye a steady glow of the
• Fluorescent 12 light off.
• the phosphor 12 is formed for example of an optically active phosphor powder that is embedded in a suitable matrix material.
• the matrix material should be optically transparent in the relevant wavelength range, have a suitable refractive index and have sufficient thermal conductivity to dissipate the waste heat.
• Typical matrix materials are plastics, such as polymers and polycarbonates, glass, silicone or the like.
• plastics such as polymers and polycarbonates, glass, silicone or the like.
• Matrix material may be in the form of a liquid, gel or paste prior to final cure and applied directly or indirectly to the substrate in this form, which may be transparent and in the form of sapphire, glass, plastic or the like. Will that be Mixture of phosphor powder and matrix material indirectly on the
• a reflective layer 14 is disposed on the substrate 13, on which then the mixture or the phosphor 12 is arranged.
• a first optical arrangement 16 is arranged in the radiation direction 15 in front of the phosphor 12 and a second optical arrangement 17 behind the phosphor 12 in the radiation direction 15.
• the first optical assembly 16 which is arranged between the beam steering device 11 and the phosphor 12, has three optical elements in the form of a converging lens 18, a convex microlens array 19 and a concave microlens array 20.
• Condenser lens 18 in which the beams arriving from the beam steering device 11 from different angles are first parallelized.
• the rays parallelized by the converging lens 18 strike
• This first optical arrangement 16 makes it possible to reduce the beam diameter of the electromagnetic radiation before it impinges on the phosphor 12, so that approximately point light sources can arise on the phosphor 12.
• the light emerging from these point light sources and emerging from the phosphor 12 then impinges on the second optical arrangement 17, which has as an optical element a plano-convexly formed microlens arrangement 21, by means of which the light emerging from the phosphor 12 is collimated.
• the collimated light subsequently impinges on a projection optical system 22 arranged in the radiation direction 15 behind the second optical arrangement 17, which in the embodiment shown here has three converging lenses 23 arranged one behind the other having.
• the projection optics 22 By means of the projection optics 22, the collimated light can be imaged particularly effectively into the far field.
• FIG. 2 shows a further possible embodiment of a headlight module 100 '.
• the headlight module 100 'shown in FIG. 2 also has a radiation source 10', a beam steering device 11 ', a phosphor 12' arranged on a carrier material 13 'and a reflective layer 14'
• Optics assembly 16 ' one in the radiation direction 15' behind the phosphor 12 'arranged second optical assembly 17' and in the radiation direction 15 'behind the second optical assembly 17' arranged projection optics 22 ', the three converging lenses 23' comprises on.
• the headlight module 100 'shown in FIG. 2 differs from the headlight module 100 shown in FIG. 1 in the manner of the optical elements of the first optical arrangement 16'.
• the first optical arrangement 16 'shown in FIG. 2 has a first holographic element 24' and a second holographic element 25 'arranged at a distance from the first holographic element 24', the two holographic elements 24 ', 25' having a transparent carrier layer 26 ', for example in the form of glass, are interconnected.
• the first holographic element 24 ' is used for deflecting and focusing the radiation emitted by the beam steering device 11'.
• the second holographic element 25 'arranged in the radiation direction 15' behind the first holographic element 24 ' serves to collimate the radiation emitted by the first holographic element 24' before it is emitted to the luminescent substance 12 '.
• the second optical arrangement 17 ' like the second optical arrangement 17 of the headlight module 100 shown in FIG. 1, has a plano-convex microlens arrangement 21' as an optical element, by means of which the light emerging from the phosphor 12 'is collimated, before being transmitted to the projection optics 22 'and is imaged by this into the far field.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• General Physics & Mathematics (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=54148522

Family Applications (1)

Country Status (4)

Families Citing this family (20)

Family Cites Families (12)

• 2014
  • 2014-11-25 DE DE102014223933.8A patent/DE102014223933A1/de not_active Withdrawn
• 2015
  • 2015-09-18 CN CN201580063881.4A patent/CN107076388A/zh active Pending
  • 2015-09-18 EP EP15766478.0A patent/EP3224531A1/de not_active Withdrawn
  • 2015-09-18 WO PCT/EP2015/071458 patent/WO2016082960A1/de active Application Filing

Also Published As

Similar Documents

Legal Events