CN101218469A - A light module for producing light with a scattering pattern that is electrically variable and use thereof as multiple purpose light - Google Patents
A light module for producing light with a scattering pattern that is electrically variable and use thereof as multiple purpose light Download PDFInfo
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- CN101218469A CN101218469A CNA2006800249925A CN200680024992A CN101218469A CN 101218469 A CN101218469 A CN 101218469A CN A2006800249925 A CNA2006800249925 A CN A2006800249925A CN 200680024992 A CN200680024992 A CN 200680024992A CN 101218469 A CN101218469 A CN 101218469A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/003—Controlling the distribution of the light emitted by adjustment of elements by interposition of elements with electrically controlled variable light transmissivity, e.g. liquid crystal elements or electrochromic devices
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Abstract
The present invention provides an optical module (1) which is arranged for generating the light beam (25) with an electric variable scatter pattern. The module comprises a light source (2) which is arranged for providing light beam (5); and an electric adjustable optical element (300) which is arranged for adjusting the light beam (5) from the light source (2). The adjustable optical element comprises a first unit (10) comprising a first liquid crystal gel (11); a random polarization rotator (30); a second unit (20) which comprises a second liquid crystal gel (21); and a unit (40) for exerting electric voltage to at least one in the first and the second units (10 and 20). Especially the optical module (1) provides a light beam (25) which has an anisotropic light distribution.
Description
Technical field
The present invention relates to that a kind of generation has the optical module of electricity variable (electrically variable) scattering pattern and as the purposes of multi-purpose light.
Background technology
In present automobile, use a large amount of light sources to realize the multiple function of interior automotive lighting.Use a plurality of as reading lamp and can use a little more stray illumination as dressing (vanity) and comfortable illumination.Also have some to be placed near the lamp of automobile door, so that can illuminate the stepped area that enters in the automobile.Therefore, in automobile, use a plurality of light sources to realize a plurality of functions, for example reading lamp, dressing lamp, step lamp or the like.
The example of interior automotive lamp has been described in EP0669224.The document has been described the gate automobile room illumination lamp (courtesy lamp) that is contained in automotive interior, and its two with band bulb separate chamber, and one is used for map reading, and one is used for common illumination.The bulb of the lens of reading lamp and it adds that the wall of separating two lamp chambers and two contacts form together to be fixed on the first lamp chamber interior and in order to replace the single unit that bulb can take off.Here use two kinds of lamps to be used for different purposes.
Summary of the invention
The shortcoming of the interior auto lamp of prior art (interior car lamp) is that these lamps may make driver's dim eyesight.And the interior auto lamp of prior art produces such light beam usually, and its shape can not change and can not be used for multiple use.
Therefore, one aspect of the present invention provides a kind of optical module (light module), is used to produce the light with the variable scattering pattern of electricity.Another aspect of the present invention provides a kind of multiduty lamp, in particular for the lamp of interior automotive lighting.
According to a first aspect of the invention, provide a kind of optical module, be used to produce light, having comprised with the variable scattering pattern of electricity:
A. light source is used to provide light beam through layout; And
The optical element of b. electric adjustable (electrically adjustable) is used to regulate described light beam from described light source through layout, comprising:
1. the first module that has first gel with liquid crystal structure;
2. Ren Xuan polarization rotator;
3. the Unit second that has second gel with liquid crystal structure; With
4. apply the unit of voltage at least one of Unit first and second,
Preferably, described Unit first and second and optional polarization rotator are used to provide through layout have anisotropic photodistributed light, just, light beam is modified to has the photodistributed light beam of anisotropy.
According to another aspect of the present invention, be used in the optical module or be used for the controller of optical module, this controller is arranged to, and according to regulating control signal, drives at least one element in the element group that signal controlling comprises this electrically tuneable optical element and this light source by at least one.
According to another aspect again of the present invention, but provide a kind of computer program of operation controller, this computer program comprises such function, according to regulating control signal, by drive at least one element in the element group that signal controlling comprises electrically tuneable optical element and light source according at least one of at least one optical module of the present invention.
And according to another aspect of the present invention, the present invention can use optical module according to the present invention as multi-purpose light, especially as auto lamp in multiduty.
Description of drawings
Now will be only with reference to schematic figures, by means of example, embodiments of the invention are described, wherein corresponding Reference numeral is represented corresponding part, and wherein:
Fig. 1 has schematically described a plurality of positions of interior auto lamp;
Fig. 2 has schematically described the scattering of light beam;
Fig. 3 schematically is described as function and θ according to embodiments of the invention with scattering pattern;
Fig. 4 with a polarization of scattering strength (with reference to figure 3, for example is 135 ° or 315 °) the angle distribute and to be described as the function of voltage, be that unit for the LC gel (gel with liquid crystal structure) with uniaxial orientation obtains wherein according to this scattering strength of the embodiment of the invention;
Fig. 5 has described, and for the polarization the same with Fig. 4, the transmissivity of unit that has the LC gel according to an embodiment of the invention is as the function of voltage;
Fig. 6 a-6b has schematically described a plurality of embodiment according to optical module of the present invention;
Fig. 7 has schematically described an embodiment according to optical module of the present invention;
Fig. 8 has schematically described an embodiment according to optical module of the present invention;
Fig. 9 a-9b has schematically described another embodiment according to optical module of the present invention, and wherein optical module provides a plurality of light beams.
The specific embodiment
In present automobile, use a large amount of lamps to realize a plurality of functions of intraoral illumination in the automobile.Use a plurality of as reading lighting with use more a little stray illumination as dressing and comfortable illumination.Also near the automobile door, place some lamps, so that can illuminate the stepped area that enters in the automobile or go out in the automobile.Fig. 1 shows the embodiment of the position that is used in a plurality of lamps in the automobile 100, for example dressing lamp 101, reading lamp 102 and step lamp 103.More a plurality of positions of lamp also are possible, and send a letter here also is significantly for those skilled in the art, for example the interior lamp module of (for example be arranged between the passenger seat of pilot set and front or be arranged in above the back seat) on the interior automotive top.When suitably not regulating lamp, the state of existing lamp may make driver's dim eyesight.For example, the state of reading lamp 102 is easily adapted to and further comprise step lamp function.
Here described a kind of optical module that comprises light source and electricity adjustable (electrically adjustable) optical element (the especially dispersing element of electric induction (electrically induced)), it can change the shape of light beam according to the electric field that applies.And, can realize that scattering (perhaps scattering pattern) makes its very anisotropy.Advantageously, the use that is used for regulating the tunable optical component of scattering pattern provides the possibility in a plurality of functions of single optical module combination.Like this, for example a light (reading light) can be adjusted to angle pencil of ray (comfortable light, the LOIHT that for example has wide distribution makes people can see each other in the dark) or even further be adjusted to super angle pencil of ray shape (step light or dipped beam or common interior lighting light).Therefore, preferred arrangements Unit first and second and the polarization rotator that should choose wantonly make optical module provide and have the photodistributed light beam of anisotropy.
Therefore, in certain embodiments, can use optical module according to the present invention, especially as multiduty interior automotive lamp as multi-purpose light.With reference to figure 1, automobile can be provided with optical module, and wherein the purposes of optical module is reading lamp, dressing lamp or step lamp.This for those skilled in the art clearly can provide a plurality of optical modules.Advantageously, can arrange adjustable optical element, so that but the adjusting light that comprises the light beam that has cone governor shape angle and/or can regulate direction (adjusted light) to be provided, because angle of scattering is (the electrically variable) that can electrically change.Not only can be applied in the car according to optical module of the present invention, and can be applied in truck, bus, aircraft and the car, and can be used for the indoor and outdoors illumination, be used for equipment such as (portable) hand lamp, flash lamp, illuminating lamp, spectators' lamp (spectator), telescope, (spy) telescope, still camera, dynamic image camera, tool camera-equipped mobile phone, consumer device is such as magnetron, washing machine, dish-washing machine, baking box or the like.
This optical module is based on the anisotropic liquid crystal gel, and it is described in EP0451905 or US5188760, here they is incorporated herein by reference.System known in the art described in term " anisotropic liquid crystal gel ", and obtain in the following manner: form the liquid crystal compound that comprises polymerizable composition (can produce the monomer of crosslinked (cross-linked) polymer when polymerization) and non-polymerizable composition (the conventional LC that uses) in display.For photopolymerization, system is provided with the light initiator, yet for thermal polymerization, this system is provided with hot initiator.Then the LC mixture is placed in the suitable unit, wherein in LC, causes the orientation of macroscopic view by the oriented layer that enters cell surface.When with macroscopic orientation behavior aggregate monomer, obtain anisotropic gel.Therefore, the anisotropy gel is such system, wherein is orientated the LC molecule on a macro scale, and polymer (converging network) is dispersed in the described system.This gel (basically) all is transparent for the light with all angle projections.
Here, term " gel with liquid crystal structure " (LC gel) refers to the gel of polymer dispersed in the liquid crystal of macroscopic orientation, and this is well known by persons skilled in the art.For example, (light) curable monomer is blended in the LC main body.Then mixture is expelled to and has in the suitable surface-treated lc unit, subsequently the curable monomer of (light) polymerization described (light) in the mixture of monomer and LC main body.
For example, can produce anisotropic gel by aligned liquid-crystal (LC) mixture that comprises the LC diarylates and the LC molecule of routine is carried out photopolymerization.In the state that voltage disconnects, because orderly molecules align, so gel is transparent or is transparent basically.When voltage surpassed threshold value, the moment of torsion that is applied on the LC molecule from electric field caused their reorientation, made to form the territory with different orientation LC molecule.The variation of molecularly oriented causes the fluctuation of refraction coefficient in same area (domain) not, and it has caused light scattering.Preferably, can on all directions or according to the orientation of LC molecule well known by persons skilled in the art and/or structure (anisotropy) on specific direction (scope of angle), isotropically scattering drops on the light on the anisotropy gel.Here, distribution of term anisotropic light or anisotropic scattering pattern refer to the scattering pattern that isophote (line that connects equal strength point) does not form annulus.
The molecularly oriented of the preferred orientation during here, term " guider (director) " refers in the middle of the liquid crystal mutually.Term " middle phase " refers to the orientation preface less than three-dimensional (just as crystal) and mobile equilibrium liquid crystalline phase less than isotropic liquid formation.The parallel-oriented of vertical element axle is the same for all middle phases (the orientation grade of long scope).Term " twisted nematic (twisted nematic) " (TN) refers to a kind of liquid crystal aligning structure, wherein the LC molecule from a surface to another surperficial half-twist.Term " STN Super TN " (STN) refers to a kind of liquid crystal, and wherein liquid crystal molecule carries out the rotation greater than 90 ° in the unit.And term " courage steroid (cholesteric) type liquid crystal " refers to a kind of LC liquid crystalline phase, and it is doped with so-called chirality (chiral) molecule of introducing rotation in the LC molecule.This chiral nematic that also is called mutually.Cholesteryl liquid crystal mutually in, the distance that its above guider rotation is 360 ° is the spiral shell footpath of spiral.Usually, along with the increase of chiral molecules concentration in system, it is littler that the spiral shell of spiral directly becomes.
Schematically show light scattering in Fig. 2, wherein Reference numeral 5 is represented the incident beam of light sources 2 (not shown) here, and wherein light source 2 is arranged so that light beam 5 to be provided.In an embodiment, light source 2 is one or more from the group that is made of Halogen lamp LED, xenon lamp, LED and fluorescent lamp.In one embodiment, LED is preferred.Therefore, light source 2 can comprise a plurality of LED or fluorescent lamp or one or more xenon lamp or the like.Light source 2 can provide white light, but colourama can also be provided.In general, light source 2 will provide visible light, and radiation wavelength is in the scope of about 400-700nm, although the present invention is not limited to these wavelength.Optical module 1 according to the present invention can also be applied to other radiation, such as UV or near-infrared radiation.
With reference to figure 2, and the supposition under the electric field off state in the gel molecularly oriented of LC molecule along the z axle, when applying electric field on the unit that is comprising anisotropic gel with liquid crystal structure, perpendicular to molecularly oriented (horizontal polarization, just Ω is 90 ° or (270 °)) the polarized component of light beam 5 almost can not be scattered because do not have variation in refractive along its path.Because along the variation of its path refraction coefficient, so other composition of light of going up polarization in the direction (vertical polarization, Ω is 0 ° (perhaps 180 °)) of molecularly oriented is with scattering consumingly.This means that the light component that has in the light beam perpendicular to the polarization direction of molecularly oriented almost has scattering ground not propagated.
With reference to figure 2 and 6a, light source 2 is through arranging so that light beam 5 to be provided, its randomly (optionally) be subjected to the influence of passive light beam shaping element 3, this element for example is arranged to the collimater of collimated light beam 5.Light beam 5 enters in the unit (cell) (perhaps element) 10 with gel with liquid crystal structure 11.Preferably, gel with liquid crystal structure 11 is anisotropic liquid crystal gels, more preferably is the LC gel of uniaxial orientation, even more preferably is the gel with liquid crystal structure that comprises nematic liquid crystal.On unit 10, can apply voltage, when applying, provide to have anisotropic photodistributed light beam 15.Differently-oriented directivity with LC molecule in guider (director) the 12 expression gels.
Fig. 3 schematically is described as the curve 200 of scattering pattern 210 (when applying constant voltage on unit 10) function # and , and it can obtain according to embodiments of the invention, and especially uniaxial orientation anisotropy LC gel is as LC gel 11.Here, Fig. 3 is applied to one of them polarization direction (the light polarization composition that especially is parallel to the LC molecularly oriented in the light beam 5).Accompanying drawing only is an example, and wherein the intensity distributions of the scattering pattern 210 of Huo Deing also depends on the differently-oriented directivity 12 of LC molecule except other.The differently-oriented directivity 12 of the LC molecule in the unit 10 is preferably in the plane perpendicular to light beam 5.In this specific embodiments, the differently-oriented directivity of LC molecule is on 45 ° the angle at Ω.Other angle Ω also is possible certainly.Curve shown in Fig. 3 shows (inhour) and changes to 90 °, 180 °, 270 from (right side) 0 ° and return 0 ° (it still is 360 °).Also represented median.Outwards middle from curve, θ changes.Show some circle 201:20 °, 40 °, 60 ° and 80 ° that represent the θ value, because in an embodiment of the present invention, scattering angle θ approximately is 90 °, just, scattering angle θ is less than 90 ° (at the that given), although so do not illustrate, scattering pattern 210 can exceed the circle 201 of 80 ° of expressions.In Fig. 3, schematically show scattering pattern 210 with 3 zones: the second area 212 that have high-intensity relatively first area 211, has a moderate strength with have relative low intensive the 3rd zone 213.Note, in fact, with the level and smooth conversion that exists from the maximum intensity to the zero intensity.
Fig. 4 shows for a polarization direction (plane of polarization of the incident beam in this example on the unit is parallel to molecularly oriented), scattering strength at specific angle (with reference to figure 3, for example is about 135 ° or 315 °) example of hour angle distribution θ, this can obtain under a plurality of voltages.It can be seen, under low-voltage, scattering is restricted to about 10 °.Under high voltage, scattered light propagate into almost 90 ° than the big angle.Therefore, the LC gel with this scattering properties is highly suitable for the multipurpose optical module, and for example inner licence is bright, because this anisotropic scattering pattern has guaranteed that the driver can the dim eyesight because of the beam shape of widening.
And Fig. 5 has described has the aforesaid transmissivity as the LC gel of function of voltage according to the embodiment of the invention.Have some hysteresis (hysteresis), the curve that obtains when the voltage on the increase unit 10 is high more, and the curve that obtains when reducing voltage subsequently is low more.
For example, can regulate the collimation and the beam shape of the light beam of generation by applying alternating voltage with adjustable amplitude to liquid crystal cells 10 (perhaps element).Therefore, in a particular embodiment, by greater than 0V be equal to or less than the voltage-operated described unit of root mean square (rms) of 60V.Preferably, the voltage that applies on the lc unit of optical module greatly about 0.1 and 25V between, more preferably greater than 0.2 and 20V (rms) between, even more preferably be lower than about 12V (rms) (car cell voltage).By this way, can provide optical module, wherein optical module has and is equal to, or greater than 5 ° and less than 90 ° scatteringangle.The frequency of the field that applies is preferably approximately between 50Hz and the 100Hz, and it preferably has square waveform, and this is well known by persons skilled in the art.
Therefore, in a kind of scheme of distortion, a kind of optical module 1 is provided, it is arranged to produce the light beam 25 with electric variable scattering pattern (just wherein can electrically change angle of scattering , θ and intensity distributions), comprise the light source 2 that is arranged to provide light beam 5, with the electrically tuneable optical element that is arranged to regulate from the light beam 5 of light source 2, this electrically tuneable optical element comprises the unit 10 with gel with liquid crystal structure 11, on unit 10, apply the unit of voltage, and arrangement unit 10 wherein, make optical module 1 provide and have the photodistributed light beam 15 of anisotropy.
Preferably, the lc unit of optical module comprises the anisotropic liquid crystal gel, more preferably be selected from by just have or group that the gel with liquid crystal structure of negative dielectric anisotropic constitutes in the anisotropic liquid crystal gel of uniaxial orientation.Term " positive dielectric anisotropy " refer under certain electric field frequency, be parallel to guider dielectric constant greater than dielectric constant perpendicular to guider." negative dielectric anisotropic " refers to the opposite effect that is higher than the dielectric constant that is parallel to guider under certain electric field frequency perpendicular to the dielectric constant of guider.Liquid crystal can be selected from by the liquid crystal in the group that constitutes to row, (surpassing) twisted nematic, smectic (smectic) and cholesteryl liquid crystal.Term " gel with liquid crystal structure of uniaxial orientation " refers to wherein guider (director) along the LC gel of uniaxial orientation.
Yet the gel of this uniaxial orientation is only towards a polarization direction scattering (referring to above).For two polarization direction scatterings, preferably use two unit.In one embodiment, adjacent each other land or each other on it arrangement unit, and the differently-oriented directivity that is arranged to molecule is perpendicular to one another.In this structure, two polarization direction scatterings.
Embodiment in this structure shown in Fig. 6 a.Light source 2 is arranged so that light beam 5 to be provided, and the influence that it can randomly be subjected to passive light beam shaping element 3 for example is arranged and is used for the collimater of calibration beam 5.Light beam 5 enters the first module 10 with first gel with liquid crystal structure 11.Preferably, gel with liquid crystal structure 11 is anisotropic liquid crystal gels, is more preferably the anisotropy LC gel of uniaxial orientation, even is more preferably the gel with liquid crystal structure that comprises nematic liquid crystal.On unit 10, can apply voltage, it provides and has the photodistributed light beam 15 of anisotropy when applying voltage.Differently-oriented directivity with LC molecule in guider (director) the 12 expression gels.At least a portion of light beam 15 is propagated by unit 10, and (this composition is parallel to guider 12 to wherein a kind of as mentioned above polarized component; For example still referring to Fig. 3) be scattered, other polarized component is not scattered basically.Represent the light beam propagated with Reference numeral 15.Light beam 15 enters in second unit 20 with second gel with liquid crystal structure 12.Preferably, gel with liquid crystal structure 21 still is the anisotropic liquid crystal gel, is more preferably uniaxial orientation anisotropy LC gel, even is more preferably the gel with liquid crystal structure that comprises nematic liquid crystal.Also can apply voltage on unit 20, when applying voltage, it provides has the photodistributed light beam 25 of anisotropy.The differently-oriented directivity (for example Ω=45 °, also referring to top) of representing LC molecule in the gel 21 with guider 22.Because the orientation 22 of LC molecule is perpendicular to orientation 12 (just Ω=135 °) in 21, so the light beam of propagating by second unit 20 25 will demonstrate the scattering pattern of quadrature (orthogonal) now; Just with reference to figure 3, will find that scattering pattern comprises two scattering regions, one as describing in Fig. 3, and one described perpendicular to Fig. 3.With reference to figure 3, can find that quadrature scattering pattern (perhaps cross spider pattern) has extends to be approximately the vertical scattering region of 135 ° or 315 ° (as described and obtain) and the vertical scattering region that is approximately 45 ° or 225 ° (acquisition second unit 20 after is not shown) after first module 10.
Notice that the guider 12 and 22 among the figure schematically draws, and need not represent the angle that mentions, for example 45 ° or 135 ° here.
Therefore, according to embodiment, optical module 1 is provided, wherein optical module 1 produces the light beam 25 with electric variable scattering pattern (just wherein and θ are controllable) through arranging, it comprises the light source 2 and the electrically tuneable optical element 300 that is arranged to regulate from the light beam 5 of light source 2 that is arranged to produce light beam 5, wherein can comprise first module 10 by electric light modulation element 300 with first gel with liquid crystal structure 11, has second unit 20 of second gel with liquid crystal structure 21 and in first and second unit 10, apply the unit of voltage at least one of 20, wherein first and second unit 10,20 make optical module 1 provide through layout has the photodistributed light beam 25 of anisotropy (anisotropic scattering pattern just).
By the voltage on regulon 10 and 20, the shape that can regulate scattering pattern 210 is (still referring to Fig. 4, for a unit), just by electrically tuneable optical element 300, can change the output of , θ, intensity distributions and light, with the required scattering pattern 210 of the anisotropic scattering light that obtains light beam 25.
Even more preferably, use two unit 10,20, wherein unit 10,20 is placed on top of one another or placed adjacent one another, but places polarization rotator 30 between the unit, as illustrating in meaning property as shown in Fig. 6 b.In a particular embodiment, provide optical module 1, wherein polarization rotator 30 is selected from the group that the polymer network that obtained by λ/2 plates (half-wave plate) and (surpassing) twisted nematic liquid crystal cell or liquid crystal polymer or the polymerization by reaction LC material constitutes.
With reference to figure 6b, when the optical axis 32 of half-wave plate is set to 45 ° (α) with respect to the differently-oriented directivity 12,22 of the molecule in the gel, advantageously, can be on identical direction two kinds of polarized components of scattering, and can provide overlapping scattering pattern 210.When using (surpassing) twisted nematic liquid crystal cell or polymeric layer, can obtain identical effect as polarization rotator.Half-wave plate can have been bought on market, and be used for also can wide wave-length coverage (for example light source 2 can provide white light).
By means of polarization rotator 30, in the structure that Fig. 6 b schematically shows, can rotate the not scattered light that has perpendicular to the polarization of molecularly oriented 12 (with reference to figure 2, this is a polarized component, wherein the angle Ω between polarisation of light composition and the molecularly oriented 12 is 90 ° or almost 90 ° (perhaps 270 ° or almost 270 °)), make its polarization be parallel to the molecularly oriented 12 in the unit 10 now.This means after polarization rotator 30, do not have the polarized component of scattering to be parallel to molecularly oriented 12 in the unit 10 in the light beam 35.Therefore, when light beam 35 enters (electrically tuneable optical element 300) second unit 20, it comprises the gel with liquid crystal structure 21 with the polarization direction 22 that is parallel to polarization direction 12 (therefore also be parallel to light beam 35 kinds not the polarization direction of scattered light), described polarized component also can be scattered, be similar to recited above, the scattering pattern that is similar to the scattering pattern 210 that other polarized component is obtained after unit 10 is provided, overlapping or overlapping basically scattering pattern 210 is provided thus.Therefore the scattering pattern 210 among Fig. 3 also is illustrated in the overlapping scattering pattern that obtains after the unit 20 in this embodiment, and wherein scattering pattern 210 is accumulations of two kinds of polarized components.Advantageously, use this electrically tuneable optical element 300 to provide even better result,, and obtained the anisotropic light distribution because all light of light beam 25 are all by scattering anisotropically basically.Be applied to the voltage on the unit 10,20 and can regulate angle of scattering , the θ of this light beam by polarization rotator 30 by change.People can use any other angle between the differently-oriented directivity 12,22, and use circulator 30 also to make the light of two polarization directions be scattered when two scattering pattern are rotated relative to one another.
Therefore, in a particular embodiment, the invention provides optical module 1, it is arranged to produce the light beam 25 with the variable scattering pattern of electricity, this optical module 1 comprises the light source 2 and the electrically tuneable optical element 300 that is arranged to regulate from the light beam 5 of light source 2 that is arranged to provide light beam 5, wherein electrically tuneable optical element 300 comprises the first module 10 with first gel with liquid crystal structure 11, polarization rotator 30, second unit 20 with second gel with liquid crystal structure 21, with to first and second unit 10, at least one of 20 applies the unit 40 of voltage, wherein arrange first and second unit 10,20 and polarization rotator 30, make optical module 1 provide and have the photodistributed light beam 25 of anisotropy.Especially, a) orientation 12 of the molecule of unit 10, gel with liquid crystal structure 11 and LC gel 11, b) polarization rotator 30 and c) unit 20, the orientation 22 of the molecule of gel with liquid crystal structure 21 and LC gel 21 is arranged such, and makes two anisotropically scatterings of polarized component of light beam 5.Even more preferably, they be arranged such that after first module 10 light beam 15 not the scattering polarization composition by polarization rotator 30 rotation, and, make that the scattering pattern 210 of two polarized components is overlapping in the light beam 25 by gel with liquid crystal structure 21 scatterings in the unit 20.Therefore, preferably polarization rotator 30 is incited somebody to action the not polarization direction half-twist of scattering polarization composition.
If two polarized components all need to be affected, then preferred in such structure, wherein the orientation 12,22 of the liquid crystal molecule in the gel 11,21 of unit 10,20 is perpendicular to one another (scattering pattern of intersection is referring to top), uses the tunable optical component 300 that comprises unit 10,20.Yet, more preferably, in two unit 10,20, the differently-oriented directivity 12,22 of molecule keeps identical, yet preferably circulator 30 is arranged between the unit 10,20 such as half-wave plate under such situation, and be arranged such that scattering polarization composition half-twist not, the overlapping scattering pattern 210 of two polarized components is provided thus.Therefore, for two polarized components of scattering, can use two cellular constructions with unit 10,20 and polarization rotator 30.
In a preferred embodiment, in optical module 1, first and second gel with liquid crystal structure the 11, the 21st, anisotropic liquid crystal gel.Preferably, first and second gel with liquid crystal structure 11,21 comprise the liquid crystal that is selected from nematic liquid crystal, smectic liquid crystal and the chiral liquid crystal respectively, are preferably single shaft or torsion structure.
In certain embodiments, for anisotropic scattering, first and second gel with liquid crystal structure 11,21 comprise respectively be selected from by just have or group that the anisotropic liquid crystal gel of negative dielectric anisotropic constitutes in the uniaxial orientation gel with liquid crystal structure.When using negative dielectric anisotropic LC gel, preferably aim at (collimate) LC molecule with big relatively inclination angle, preferably be equal to, or greater than 75 °, more preferably be equal to, or greater than 80 °, be more preferably less than 89 °.The gel that preferably has positive dielectric anisotropy because their easier utilizations, and demonstrates for big dispersion effect and is favourable high birefringence and is favourable high dielectric anisotropy for low switched voltage.
In another specific embodiment again, first or second or two gel with liquid crystal structure 11,21 comprises the nematic liquid crystal gel, and more preferably two gel with liquid crystal structure 11,21 comprise the nematic liquid crystal gel.In another specific embodiment again, first or second or two gel with liquid crystal structure 11,21 comprises the gel with liquid crystal structure of torsion structure.Preferably use, because they demonstrate lower viscosity and switching time faster to the row material.Using the advantage of STN Super TN (super twisted nematic) unit is the shape that can further influence scattering pattern 210.As a rule, torsion angle high more (changing to 90 °) from 0 °, scattering pattern 210 is wide more.To the combination that it will be clear to someone skilled in the art that the unit 10,20 with dissimilar LC gel 11,21 is possible.For example, first module 10 can comprise the nematic liquid crystal gel, and second unit 20 can comprise and reverses (twisted) nematic liquid crystal gel.
Preferably, the voltage on unit 10 or unit 20 or two unit 10,20 is greater than 0V and be equal to or less than 60V.
By this way, provide optical module 1, wherein for example advantageously, scattering angle θ from more than or equal to 5 ° and less than 90 ° scope be the electricity variable.Also advantageously, by regulating angle of scattering to comprise twisted nematic liquid crystal such as selected cell 10,20 (perhaps both) and/or circulator 30.Further, can control intensity distributions in these angle of scatterings , θ and the scattering pattern 210 by being applied to voltage on unit 10 and 20 respectively.Therefore, in an embodiment, can arrange and make the adjustable optical element of electricity consumption 300, so that but the adjusting light that comprises the light beam 25 that has cone governor shape and/or can regulate direction to be provided, with the optimal illumination (just the intensity distributions of angle θ, and scattering pattern 210 can be regulated) of realizing changing greatly object.In another embodiment again, can arrange and use electrically tuneable optical element 300, be used to provide and comprise the light regulated with the light beam 25 that can regulate aspect ratio (for example 4: 3 or 16: 9 aspect ratios), beam shape is changed over the selection aspect ratio that is illuminated object, such as the part in doorway, (car), inlet or the like.
Therefore, in an embodiment, provide electrically tuneable optical element 300, its light that can control light beam 25 distributes and/or its shape, and can be placed on the front of light source 2.This can be by collimater 3 collimation be calibrated light source 2.Yet, be used to collimate and the electrically tuneable optical element 300 of the light that is shaped can also be placed between light source 2 and the passive light beam shaping element, perhaps in the situation of a plurality of passive light beam shaping elements, be placed between the passive forming element.With reference to figure 7, in an embodiment,, can use light source in order to obtain to have the light shape of certain distribution, such as light emitting diode, have definite shape reflector 440 (its can be with Fig. 6 a and 6b in passive light beam shaping element 3 compare) and/or 441.Therefore, adjustable optical elements 300 can be placed between passive light beam shaping element 440 and 441.Passive light beam shaping element 440,441 can also be made of several sections, and electrically tuneable optical element 300 can be placed on any position along passive light beam shaping element 440 and 441.In optical module 2, can comprise a plurality of passive light beam elements, as at the embodiment with passive light beam shaping element 440 and 441 shown in Figure 8.Notice that Figure 11 only shows light source, adjustable optical elements 300 and passive light beam shaping element 440 and 441.Other element is not shown in the figure, for example controller 304 or the like.
Further, in an embodiment, between light source 2 and adjustable component 300, only there is one or more passive light beam shaping element, as in (referring to following) shown in Figure 12 a and the 12b.
With reference to figure 8, in another scheme of the present invention, optical module 1 also comprises controller 304, and it is arranged to response regulation control signal 371 and drives at least one element that signal 375,376 is controlled in the element group that comprises electrically tuneable optical element 300 and light source 2 by at least one.Figure 9 illustrates embodiment, comprise the light source 2 of illuminating objects (not shown), and comprise and regulate the light 5 stem from light source 2 and the electrically tuneable optical element 300 of regulating light 25 is provided to object according to optical module 1 of the present invention.Controller 304 response regulation control signals 371 are by driving signal 376 control electrically tuneable optical elements 300 and/or passing through to drive signal 375 control light sources 2.Drive signal 376 and can comprise driving signal more than one, for example be used on the control module 10 and unit 20 on the driving signal of voltage.
Light source 2 for example is the flash of light source or connects the light source of reading, and can comprise light emitting diode or diode array.In a preferred embodiment, if diode array comprises the light emitting diode with different colours, control the driving signal 75 of light source 2 so and can control the light emitting diode of light emitting diode matrix respectively, so that the light 25 that colourama 25 is provided or has adjustable color temperature.In a particular embodiment, controller 304 comprises processor 343, it is coupled to interface 340 and is used for receiving adjusting control signal 371, and selectively is coupled to input interface 342 to receive adjusting control signals 371 from user 341, for example arrives short-term storage 344 and/or arrives long term memory 310.Present optical module 1 does not for example need by the hand convertible lens, is used for regulating the light beam 25 or the required intensity (although still can randomly do like this, referring to following) of manual adjustments light that stem from light source 2.Replacing so is that controller 304 provides in more automatic mode and regulated the luminous intensity of the light beam 25 that stems from light source 2 and the possibility of beam shape.As a result, optical module 1 is more friendly for the user according to an embodiment of the invention.Replacedly or still additionally, for example produce other adjusting control signal 371, with notification controller 304 (being processor 343 in one embodiment) user's selection by the user.Can control luminous intensity (also referring to Figure 4 and 5) by regulating and distributing to the power of light source 2 and/or by the voltage that is applied on liquid crystal cells 10 and/or 20.
Described module can also comprise one or more switches or one or more sensor or one or more switch and sensor the two, wherein said switch provides and is selected from one or more functions that comprise in the following group:
Open and turn-off (switch on and off) light source 2;
Electrically regulate (electrically adjusting) electrically tuneable optical element 300, (for example the passenger is adjusted to light source and reads light characteristic (not scattering) from comfortable light characteristic (scattering));
Regulate the scattering properties of light beam 25;
Regulate the luminous intensity of light beam 25;
And wherein this sensor provides and is selected from one or more functions that comprise in the following group:
Detect once or repeatedly opening, close, lock and release of one or more;
Detection is used for one or more once or repeatedly open, close, lock the remote signal with release;
Detect driver and/or one or more passenger's existence;
Detect and drive (for example being used to provide signal 376) to stop not scattering function for the light beam 25 that points to the driver;
Detection is used to control the remote control signal (sensor that for example detects Long-distance Control provides light beam 25 from reading the signal that light characteristic (not scattering or not scattering substantially) changes to comfortable light characteristic (scattering)) as above-mentioned one or more identical function about switch.
The invention provides optical module 1 in one embodiment, it is used to provide the light with the variable scattering pattern of electricity, and it comprises:
The light source 2 of emission light 5;
Electrically tuneable optical element 300 (also being called tunable optical component), the light 5 that is used for stemming from light source 2 is adjusted to adjusting light 25; And
According to another aspect again of the present invention, a kind of computer program that operates on the controller 304 is provided, this computer program comprises such function: response regulation control signal 371, by at least one driving signal 375,376 of at least one optical module 1, control at least one element in the element group that comprises electrically tuneable optical element 300 and light source 2.This computer program can also be controlled 2 or a plurality of optical module 1.Regulating control signal 371 can be by the user, and the user who for example wants to increase or reduces the output of optical module 1 provides, but generation automatically, and for example based on the signal of sensor (not shown), detecting gate is opened.
According to another embodiment again, schematically show as Fig. 9 a and 9b, optical module 1 according to the present invention provides more than one light beam 25 (just, provide and had two or more light beams 25 that electricity can change scattering pattern), here represent with Reference numeral 25a and 25b, wherein optical module 1 preferably includes a plurality of light sources, represent with 2a and 2b, it is arranged to provide a plurality of light beams 5 (representing with 5a and 5b) and a plurality of electrically tuneable optical element 300, represent that with Reference numeral 300a and 300b it is arranged to a plurality of light beams 5 from described a plurality of light sources 2 are adjusted to a plurality of adjusting light beams (25).This optical module 1 can also comprise controller 300, be used for response regulation control signal 371, drive signal 375,376 by at least one, control at least one element in the element group that comprises one or more tunable optical component 300 and one or more light source 2.
Can use a light source and one or more beam splitter or other device well known to those skilled in the art to it will be clear to someone skilled in the art that, in order to a plurality of light beams 5 to be provided.Preferably adjust each light beam 5 (5a, 5b or the like) individually by tunable optical component 300 (300a, 300b or the like).
Therefore, here term " light beam 25 ", " drive signal 375 ", " drive signal 376 ", " light source 2 ", " collimater (collimator) 3 ", " light beam 5 " or the like also refers to " a plurality of light beam 25 " respectively, " a plurality of driving signal 375 ", " a plurality of driving signal 376 ", " a plurality of light source 2 ", " a plurality of collimater 3 ", " a plurality of light beam 5 " or the like perhaps refers to " at least one light beam 25 " respectively, " at least one drives signal 375 ", " at least one drives signal 376 ", " at least one light source 2 ", " at least one collimater 3 ", " at least one light beam 5 " or the like.
Fig. 9 a schematically shows the module with two light source 2a and 2b, although a plurality of light sources (for example provide and have 3 light beams 5 and 25 module subsequently) can be provided.Light beam 5 from light source 2a, 2b is selectively collimated by collimater 3, represents with Reference numeral 3a and 3b.Light beam 5a and 5b have been interrupted by electrically tuneable optical element 300 (just being respectively 300a and 300b), the feasible characteristic that can control light beam 25a and 25b.Mark 400 (Reference numeral 400a and 400b here) shows the position that in the module 1 light beam 25 is provided to the outside of module 1, and it also becomes exit portal (exist) 400.For example this can be lens, clear glass, transparent plastic or polymer lid, and it can be the transparency glass plate or the like that comprises the unit of (for example from unit 20) LC molecule.Be clear that for those skilled in the art exit portal 400 can have all types of suitable shapes, such as circular, square, oval or the like.
By this way, provide optical module 1, wherein said module 1 provides a plurality of light beams 25, and this optical module 1 preferably includes a plurality of light sources 2, and it is arranged to provide a plurality of light beams 5; With a plurality of electrically tuneable optical elements 300, it is arranged to regulate the light beam 5 from these a plurality of light sources 2.Term " a plurality of " is equivalent to " two or more ".Preferably, module provides 2-6, and preferred 2-3, more preferably 2-3 light beam 25, the characteristic of this light beam is electric variable, wherein can control intensity and scattering.
Further, described module 1 can comprise one or more sensor and/or one or more switch 350.These sensors or switch 350 may reside in above the module 1 or wherein, for example the instrument board of automobile (dashboard) is last or other is local but can also be present in.For example, the module of using in automobile 1 can comprise sensor 350, and this sensor is arranged in the door or the doorway of automobile and be arranged to opening of perception door.Sensor provides signal 371, and controller 304 can use this signal to turn on one or more lamp 2a, 2b and light beam 25a and 25b are provided, and this light beam for example can come scattering by driving signal 376 (with 375).Module 1 can also be alternatively or is additionally comprised the sensor of the remote de-locking of perception door.During driving, can scattering according to the present invention point to driver's light beam 25, make not dim eyesight of driver.Driver bystander can use other light beam, and for example the light beam of scattering is not read.
For example suppose that described module comprises switch 350,3 switches (as in Fig. 9 b, schematically showing) for example, described switch can be used to open a plurality of elements.Can open two light source 2a, 2b (for example LED) with first switch, start the scattering state (so that comfortable light and approach signal lamp (approaching light) function to be provided) of lc unit simultaneously.Selectively control like this, when starting central door key, can conducting light source 2a, 2b, the scattering state (approach signal lamp function) of lc unit is connected simultaneously.When scattering function is closed, can use other switch to distinguish turn-on and turn-off lamp 2a (by second switch) and lamp 2b (by the 3rd switch) individually, realize reading the light function.Can also use for example switch to it will be clear to someone skilled in the art that,, provide a plurality of functions of supporting by controller 304 such as touching control or the like.For example touch once: can conducting two light source 2a, 2b (for example LED), start the scattering state of lc unit simultaneously; Touch twice/twice: when scattering function does not start, difference turn-on and turn-off lamp 2a and 2b; Touch four times: all lamps turn-off.
To it will be clear to someone skilled in the art that switch for example can be soft-touch control or slide switch, a plurality of functions (referring to top) that it can be provided for multipurpose light for example are used for visiting simultaneously two light sources and visit two light sources separately.Like this, user 341 can give controller 304 with signal 371, and this controller can be visited light sources 2 by driving signal 375 respectively, and by driving signal 376 visit adjustable component 300.
Usually, in this embodiment and its deformation program, module 1 comprises light source 2, and it is arranged to produce two or light beam 5; Two or more optional collimaters 3, it is arranged to collimate described two or more light beams 5; Two or more electrically tuneable optical elements 300, two or more light beams 5 that it is arranged to regulate from described two or more light sources 2 provide two or more light beams with electric transformable scattering pattern 25 thus.This module comprises that also one or more switches or one or more sensor 350 or individual switch and sensor 350 boths comprise that wherein switch provides and is selected from one or more function that comprises in the following group:
Turn-on and turn-off light source 2, preferred each (for example the passenger only turns on and off his light source, such as being used to read map) of two or more light sources of turn-on and turn-off individually;
While two or more light sources of turn-on and turn-off (for example connecting all light sources 2 simultaneously);
Electrically regulate two or more electrically tuneable optical elements 300, preferably each switch of two or more switches (being variable switch) is regulated one of two or more electrically tuneable optical elements 300 (for example, the passenger is adjusted to light source and reads light characteristic (not scattering) from comfortable light characteristic (scattering)) separately;
Regulate the scattering properties of two or more light beams 25;
Regulate the luminous intensity of two or more light beams 25;
And wherein sensor provides and is selected from one or more function that comprises in the following group:
Detect once or repeatedly opening, close, lock and release of one or more;
Detection about one or more once or repeatedly open, close, lock the remote signal with release;
Detect driver and/or one or more passengers' existence;
Detect and drive (for example being used to stop) about pointing to the not scattering function of driver's light beam;
Detection is used to control the remote control signal (sensor of for example perception Long-distance Control provides from light beam 25 from reading the signal that light characteristic (not scattering or not scattering substantially) changes to comfortable light characteristic (scattering)) as above-mentioned one or more identical function about switch.
Thus, optical module 1 according to the present invention can also comprise one or more switches or one or more sensor 350 or switch and sensor 350 both, wherein said one or more switches 350 provide and are selected from one or more functions that comprise in the following group: one or more function in the group of the one or more light sources 2 of turn-on and turn-off; One or more light sources 2 of turn-on and turn-off (if having a plurality of light sources) simultaneously selectively; Electrically regulate one or more electrically tuneable optical elements 300; Regulate the scattering properties of one or more light beams 25; Regulate the luminous intensity of one or more light beams 25; And wherein said one or more sensor 350 provides and is selected from one or more function that comprises in the following group: detect one or more opening and/or closing; Detection is used to open and/or close one or more remote signal; Detect driver and/or one or more passengers' existence; Detect and move (for example driving); Detection is used to control as described the remote control signal about one or more functions of switch 350.
Usually, this module 1 can be arranged in an automobile inner top and divide, wherein light beam points to pilot set and one or more passenger seat respectively; Perhaps be arranged on another automobile inner top, wherein light beam points to back seat respectively.To what those skilled in the art know that be, module 1 can comprise plural light source 2, for example want to be arranged in wherein the module in the automobile that three people sit into a row, such as some automobiles such situation is arranged, perhaps it can be in the situation of the back seat of automobile, perhaps for example wants to be arranged in the module in the aircraft on row's seat.If module plans to be arranged in the automobile with the light beam that points to the driver, at least one optical module 300 that is preferably used for controlling the light beam 25 that points to the driver can distribute by the anisotropic light that provides when driving.
Therefore, the optional polarization rotator 30 of described first and second unit 10,20 of preferred arrangements and at least one optical element 300 makes optical module 1 to provide and has photodistributed at least one light beam 25 of anisotropy.
Here term " controller " can comprise the controller of conducting/stopcock, variable power switch or picture computer, and sort controller comprises processor and for example has the one or more sensors that are selected from above-mentioned function.
In a particular embodiment, optical module 1 can provide scattering pattern with the photodistributed light beam 25 of anisotropy (perhaps using under module 1 provides more than one light beam 25 situations, this optical module provides the scattering pattern more than one light beam 25).
Here, optical module can also be called (be used to throw light on an object) lighting device.
To what those skilled in the art know that be, phrase " optical module that comprises controller " or " optical module that comprises switch or sensor ", perhaps " optical element that comprises the unit that is used to apply voltage " do not comprise such embodiment, its middle controller 304, switch or sensor 350, and/or voltage cell 40 is far from light source (with adjustable component 300).For example, the module 1 that comprises light source 2 and adjustable component is arranged in the car on the top, and switch or sensor 350 are placed on the instrument board or the like.A controller 304 can be controlled a plurality of modules 1, and just it is by signal 375 and a plurality of locational adjustable component 300 control examples such as a plurality of lamp 2 that are arranged in automobile or aircraft etc.
According to another aspect, the present invention also provides electrically tuneable optical element 300, is used for the light beam 5 from light source 2 is adjusted to adjusting light beam 25, and this optical element 300 comprises:
1. the first module 10 that has first gel with liquid crystal structure 11;
2. Ren Xuan (optional) polarization rotator 30;
3. second unit 20 that has second gel with liquid crystal structure 21; And
4. be used at least one of first and second unit 10,20, applying the unit 40 of voltage.
With one or more light sources 2, and optional one or more passive light beam shaping elements together, and electrically tuneable optical element 300 can consequently obtain required scattering properties in order to regulate light beam 5.
By using a kind of mixture can obtain to be used for gel with liquid crystal structure of the present invention, this mixture comprises 4% active LC molecule C6M among the BL006 that obtains from Merck (Darmstadt).This mixture has 0.5% light initiator Irgacure 651 (Ciba Geigy).This mixture is incorporated in the unit on (ITO) transparency electrode that has tin indium oxide and single shaft friction PI surface.After introducing uniaxial orientation, at room temperature, use comfortable 1mW/cm
2, the UV light that has the TL lamp of emission maximum during 365nm causes polymerization.
Should be noted in the discussion above that the above embodiments are descriptive, rather than limitation of the present invention, those skilled in the art will design a lot of alternative embodiments when not breaking away from the scope of subsidiary claim.In the claims, be placed on Reference numeral in the bracket and will do not constitute restriction claim.Use verb " comprise " with and distortion do not get rid of element or the step that exists except claim is described.Article " " before the element or " one " do not get rid of and have a plurality of such elements.The present invention can realize by means of the hardware that comprises several independent components with by means of suitable programmable calculator.In enumerating the equipment claim of several means, these devices several can be specially the hardware of one and identical entry.The fact only is that some method of explaining in different mutually dependent claims is not represented, can not use the combination of these methods valuably.
Claims (17)
1. an optical module (1), it is arranged to produce the light beam (25) with electric variable scattering pattern, comprising:
A. light source (2), it is arranged to provide light beam (5); And
B. electric adjustable optical element (300), the light beam (5) that it is arranged to regulate from light source (2) comprising:
1) has the first module (10) of first gel with liquid crystal structure (11);
2) Ren Xuan polarization rotator (30);
3) has Unit second (20) of second gel with liquid crystal structure (21); With
4) at least one that is used in Unit first and second (10,20) applies the unit (40) of voltage.
2. according to the optical module (1) of claim 1, wherein Unit first and second (10,20) and optional polarization rotator (30) are used for light beam (5) is modified to through layout and have the photodistributed light beam of anisotropy (25).
3. according to the optical module (1) of one of aforementioned claim, wherein first and second gel with liquid crystal structure (11,21) are the anisotropic liquid crystal gels.
4. according to the optical module (1) of one of aforementioned claim, wherein said first and second gel with liquid crystal structure (11,21) comprise the liquid crystal that is selected from by in the group that constitutes to row, twisted nematic, smectic and cholesteryl liquid crystal respectively.
5. according to the optical module (1) of one of aforementioned claim, wherein said first and second gel with liquid crystal structure (11,21) comprise respectively be selected from by just have or group that the gel with liquid crystal structure of negative dielectric anisotropic constitutes in the uniaxial orientation gel with liquid crystal structure.
6. according to the optical module (1) of one of aforementioned claim, wherein said first or second or two kind of gel with liquid crystal structure (11,21) comprise the nematic liquid crystal gel.
7. according to the optical module (1) of one of aforementioned claim, wherein said first or second or two kind of gel with liquid crystal structure (11,21) comprise the twisted nematic liquid crystal gel.
8. according to the optical module (1) of one of aforementioned claim, it is by greater than 0V and be equal to or less than the rms voltage operation of 60V.
9. according to the optical module (1) of one of aforementioned claim, wherein scattering pattern has scatteringangle, this scatteringangle from more than or equal to 5 ° and less than 90 ° scope electrically change.
10. according to the optical module (1) of one of aforementioned claim, wherein polarization rotator (30) is selected from the group that is made of λ/2 plates and (surpassing) twisted nematic liquid crystal cell.
11. optical module (1) according to one of aforementioned claim, also comprise controller (304), it is arranged to response regulation control signal (371), drive signal (375,376) by at least one, control at least one element in the element group that comprises electrically tuneable optical element (300) and light source (2).
12. according to the optical module (1) of one of aforementioned claim, wherein light source (2) is selected from one or more in the group that is made of Halogen lamp LED, xenon lamp, LED and fluorescent lamp.
13. according to the optical module (1) of one of aforementioned claim, wherein this module provides a plurality of light beams (25), optical module (1) preferably includes:
A. many light sources (2), it is arranged to provide a plurality of light beams (5); And
B. many electrically tuneable optical elements (300), it is arranged to the light beam (5) from described a plurality of light sources (2) is adjusted to a plurality of adjusting light beams (25).
14. at the computer programmed product of going up operation according to the controller (11) of claim 11, this computer programmed product comprises following function: response regulation control signal (371), drive at least one element in the element group that signal (375,376) control comprises electrically tuneable optical element (300) and light source (2) by at least one of at least one optical module (1).
15. an electrically tuneable optical element (300) is used for the light beam (5) from light source (2) is adjusted to adjusting light beam (25), this electrically tuneable optical element (300) comprising:
1) has the first module (10) of first gel with liquid crystal structure (11);
2) Ren Xuan polarization rotator (30);
3) has Unit second (20) of second gel with liquid crystal structure (21); With
4) at least one that is used in Unit first and second (10,20) applies the unit (40) of voltage.
16. according to the optical module (1) of one of claim 1-13 purposes, preferably as auto lamp in the multipurpose as multi-purpose light.
17. according to the purposes of claim 16, wherein the use of optical module is to be selected from the group that is made of reading lamp (102), dressing lamp (101) and step lamp (103).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05106246.1 | 2005-07-08 | ||
| EP05106246 | 2005-07-08 | ||
| EP05108295.6 | 2005-09-09 | ||
| EP06100659.9 | 2006-01-20 |
Publications (1)
| Publication Number | Publication Date |
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| CN101218469A true CN101218469A (en) | 2008-07-09 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800249925A Pending CN101218469A (en) | 2005-07-08 | 2006-07-04 | A light module for producing light with a scattering pattern that is electrically variable and use thereof as multiple purpose light |
| CNA2006800248814A Pending CN101218467A (en) | 2005-07-08 | 2006-07-04 | A light module for producing light with a scattering pattern that is electrically variable and use thereof as multiple purpose light |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800248814A Pending CN101218467A (en) | 2005-07-08 | 2006-07-04 | A light module for producing light with a scattering pattern that is electrically variable and use thereof as multiple purpose light |
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| CN (2) | CN101218469A (en) |
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| CN106211811A (en) * | 2014-02-14 | 2016-12-07 | 齐德公司 | There is the electric portable lamp of wireless communication system |
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| CN108983530A (en) * | 2018-07-25 | 2018-12-11 | 京东方科技集团股份有限公司 | Light adjusting device and lighting apparatus |
| CN110332499A (en) * | 2018-03-29 | 2019-10-15 | 法雷奥照明公司 | Luminous intensity signal with liquid crystal display |
| CN112147808A (en) * | 2020-10-23 | 2020-12-29 | 京东方科技集团股份有限公司 | Intelligent glass, preparation method and display device |
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