CN1902434A - Illumination device for simulating neon or similar lighting in various colors - Google Patents
Illumination device for simulating neon or similar lighting in various colors Download PDFInfo
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- CN1902434A CN1902434A CNA2004800395797A CN200480039579A CN1902434A CN 1902434 A CN1902434 A CN 1902434A CN A2004800395797 A CNA2004800395797 A CN A2004800395797A CN 200480039579 A CN200480039579 A CN 200480039579A CN 1902434 A CN1902434 A CN 1902434A
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- light
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- lighting apparatus
- light source
- transmission medium
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
- F21V9/38—Combination of two or more photoluminescent elements of different materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
An illumination device simulates neon lighting using a light source for emitting light of a predetermined first hue and a light-transmitting medium having a predetermined density of phosphorescent dye positioned adjacent to the light source. The phosphorescent dye will absorb light emitted by the light source and emit light of a second hue. An observer of the device perceives light that is of a hue that is different from the predetermined first hue. A means for varying the intensity of the light emitted by the light source creates color changing effects in the illumination device. Light-emitting diodes (LEDs) are a suitable light source. A waveguide having both optical waveguide and light scattering properties is used to diffuse the combined light and simulate the uniform appearance of a neon tube. Alternatively, the waveguide itself can be doped with phosphorescent dye to emit light having the perceived hue.
Description
The cross reference of related application
The sequence number that the application requires on December 31st, 2003 to submit to is No.60/533,581 U.S. Provisional Application No., and be that the sequence number of submitting on June 5th, 2003 is No.10/455, the part continuity application of 639 U.S. utility application, this sequence number is No.10/455,639 U.S. utility application is that the sequence number of submitting to October 18 calendar year 2001 is No.09/982,705, the patent No. is No.6 now, 592, the part continuity application of 238 U.S. utility application, its whole disclosures are herein incorporated by reference.
Technical field
The present invention relates to a kind of lighting apparatus that utilizes light source and phosphorescent coloring to come simulate neon or similar illumination.This lighting apparatus also can comprise and is used to change the intensity of light source to produce the device of particular color variation effect.
Background technology
The neon lighting of realizing by the electric excitation of the electronics in the glass tube that is filled with the low pressure neon, for many years always in advertising, and the profile that is used for display channel type-word and building structure occupies main status.One of neon lighting is characterised in that, how all the pipe that surrounds gas on its whole length visual angle uniformly light-emitting.This feature makes neon lighting be suitable for a lot of advertisement applications, comprises hand-written works and pattern, because glass tube can be made into the profile that the artificial hand writes the bending and the distortion of works and complex pattern.Typically, the uniformly light-emitting of the neon lighting of no speck make advertisement not visually with clumsy interference.Like this, any lighting apparatus of developing for reproduction neon lighting effect also must have uniform light intensity distributions on its length and around its girth.It is also important that this lighting apparatus must have the brightness that is comparable to neon lighting at least.In addition because the technology of neon lighting is very ripe, thereby in order to squeeze into neon lighting market, the lighting apparatus that is used for competing must weight gently and have good " can operate " characteristic.Be recognized that neon lighting is broken in fact easily.Because its fragility and the more heavy amount that is mainly caused by its brace foundation structure, thereby neon lighting is packed and transportation all is expensive.And the initial operation of neon lighting, installation and/or replacing are all extremely difficult.Anyly can provide above-mentioned those neon lighting advantages of enumerating, minimize the lighting apparatus of the shortcoming of its size, weight and operability aspect simultaneously, will in lighting engineering, have remarkable development.
In light weight and the anti-spot light that breaks that is recently adopted, for example high brightness LED (LED) has been showed fine prospect but be interested in also to have dropped into a lot of people that make great efforts on this direction to those lighting apparatus to simulate neon.Yet a pair of attribute of neon lighting: uniformity and brightness have been proved to be the obstacle that is difficult to overcome, because balance having hindered the effort of simulate neon greatly to improve uniformity and brightness between distribution of light.
In effort at some shortcomings of neon, in this U.S. Patent No. 6 as the common transfer of introducing with reference to full text, 592,238 have described a kind of lighting apparatus, this lighting apparatus comprises the special-shaped bar (profiled rod) that is made of the material with guide properties, this material preferentially scattering enters the light of a side surface (" optical receiving surface "), so that the synthetic luminous intensity figure of being launched by this bar opposite side surface (" light emission surface ") elongates along the length of bar.Light source extends along optical receiving surface, and adjacent light receiving surface setting and be enough to produce the distance of the luminous intensity figure of elongation at interval with luminous reflective surface, the luminous intensity figure of described elongation has the countershaft that covers the whole circumference width of light emission surface along the main shaft of the length of bar and width basically.In a kind of preferred arrangements, light source is a string spot light, this string spot light is enough to make the light of each spot light emission to be mapped to the interior distance of described bar at interval, so that, thereby make that the collected light intensity figure of perception is uniform on the overall optical emitting surface along light emission surface and circumferentially around this surface formation luminous intensity figure that elongate, overlapping.
In U.S. Patent No. 6,592, described in 238 and a substantive characteristics of claimed lighting apparatus be uniformity of light and the intensity that lighting apparatus is launched.Importantly avoided simultaneously the shortcoming (for example, weight and fragility) of neon lighting, if can not obtain suitable optical uniformity and intensity, lighting apparatus will not have commerce or practical value so.This purpose mainly is used for realizing by making of " leakage " waveguide rod." leakage " waveguide is a kind of member that is also used as optical waveguide and light-scattering component.As waveguide, its trend towards preferentially guiding the light that comprises the light that enters its side surface along waveguide axially enter waveguide, and as light-scattering component, it facilitates the opposite side surfaces outgoing of light from waveguide.Thereby what visually perceive is the light figure of the elongation of sending along the light emission side surface of waveguide.
Yet, as U.S. Patent No. 6,592, described in 238 and a problem of the lighting apparatus of claimed use leaky waveguide and LED be that available visible color spectrum is subjected to the restriction of the limited practicality of led color.
Therefore, sequence number No.10/455 at common transfer and common pending trial, in 639 the U.S. Patent application, this application is introduced as reference in full at this equally, the lighting apparatus that utilizes fluorescent dye has wherein been described, therefore allow emission to only depend on the light of the color that independent use LED can't realize usually, and can significantly not increase the cost or the complexity of lighting apparatus.Specifically, lighting apparatus generally is made up of rod-shaped elements, shell and light source.In a preferred embodiment, rod-shaped elements is to have as the external curved lateral surface of light emission surface with as the waveguide of the inner lateral surfaces of optical receiving surface, be scattered in waveguide so that the light source below being arranged at optical receiving surface enters the light of waveguide, thereby penetrate from curved lateral surface with diffusion profile.Shell preferably includes the pair of sidewalls that defines open-ended passage, and this passage extends along the length of waveguide basically.Shell generally is used to hold light source and associated electrical accessories, and also is preferred for assembling and reverberation.
Although be desirably in sequence number No.10/455, can adopt various types of light sources in the lighting apparatus of describing in 639 the U.S. Patent application, optimized light source is the continuous high-intensity light emitting diode (LED) that is provided with of a string or many polyphone.Yet, owing to adopt LED to be subjected to the restriction of the limited availability of led color or color as the available color spectrum of the lighting apparatus of light source, thereby this lighting apparatus is configured to make be used to launch to have the perceived color that is different from LED self color or the light of color.Specifically, this is by with light color or color conversion system, especially extends and the intermediate light transmission medium of contiguous light source setting is attached to and realizes in the lighting apparatus along light source.This intermediate light transmission medium is preferably formed by being coated with the translucent basically acrylic acid, polyurethane or the similar material that dye by the predetermined combinations of one or more fluorescent dyes.Because the contiguous light source in the position of intermediate light transmission medium, interact so be directed to the intermediate light transmission medium and with the fluorescent dye that is wherein comprised from the light of light emitted.This light is partly absorbed by each fluorescent dye of intermediate light transmission medium, and has to penetrate from each fluorescent dye then than the light of energy color or color and go forward side by side into the optical receiving surface of waveguide.Like this, by the appropriate combination of choosing the dyestuff in the intermediate light transmission medium and the density that changes dyestuff, can produce final along the light emission surface of waveguide viewed color or color across visible spectrum.
The very important purpose of the present invention is to provide a kind of lighting apparatus, and this device is similar to sequence number No.10/455, described in 639 the U.S. Patent application, but by using phosphorescent coloring can produce many effects.More particularly, these effects comprise: a kind of lighting apparatus that light output is provided behind power failure (power failure) for a long time is provided; A kind of lighting apparatus that replaces between two kinds of colors is provided; And provide a kind of lighting apparatus that in certain color gamut, continuously changes.
By to the explaination discussed below and to the investigation of accompanying drawing, this purpose of the present invention and other purpose and advantage will become more obviously and be more targeted.
Summary of the invention
The present invention is a kind of lighting apparatus, and this lighting apparatus has light source and the optical transmission medium that is used to launch the first predetermined color light.This optical transmission medium has the phosphorescent coloring of predetermined density.The contiguous light source setting of optical transmission medium is so that the color of the light that the observer of this equipment perceives is different from the described first predetermined color.Like this, optical transmission medium is as the color conversion system.
Preferably, this lighting apparatus also comprises the device that is used to change by the light intensity of described light emitted, so that perceived color changes along with the state of light source.The device that is used to change by the light intensity of light emitted can be a control device, and this control device control is applied to the waveform of the power signal of described light source, comprises shape, dutycycle, amplitude and the frequency of power signal waveform.The shape of power signal waveform for example can be square wave or sine wave.
According to preferred embodiment, light source is a plurality of light emitting diodes (LED).In addition, light emitting diode is arranged with the graphics mode of having elongated.
Advantageously, lighting apparatus also has the waveguide that the adjacent light transmission medium is provided with.This waveguide be have optical receiving surface and a light emission surface be shaft-like element basically.In addition, this waveguide has fiber waveguide and light scattering characteristic concurrently.Optical receiving surface receives the light of first color and the light of second color, and by the perceived light of light emission surface emission.
According to a kind of important enforcement, optical transmission medium is made of the matrix of the trnaslucent materials basically of the phosphorescent coloring that is doped with predetermined density.Then, can there be some kinds of structures.In a kind of structure, by the part of the light of light emitted by the optical transmission medium transmission and do not absorbed by described dyestuff.In another structure, walk around optical transmission medium and directly arrive waveguide by the part of the light of light emitted, and do not pass through optical transmission medium.In another structure, optical transmission medium has the first area of substantial transparent, the second area of first phosphorescent coloring that is doped with predetermined density and the 3rd zone that is doped with second phosphorescent coloring of predetermined density.Thereby the combination of the perceived only following color of this structure: first color that comes the light that passes through the first area of free described light emitted; Second color of the light of the dyestuff emission of next free second area; And the 3rd color of the light of the dyestuff in next free the 3rd zone emission.
According to another important enforcement, optical transmission medium and waveguide are combined into single element in essence.In other words, optical transmission medium self has fiber waveguide and light scattering characteristic, is used to receive the interior lights receiving surface by the described light of first color of light emitted; And be used to launch exterior light emission curved surface by the light of the perceived color of the light combination of the light of first color and second color.
Advantageously, lighting apparatus also has shell, and this shell has the pair of sidewalls that defines passage.Light source is arranged in this passage, and this sidewall has the inner surface that light is reflexed to optical transmission medium.
The foregoing invention content should in no way limit the present invention, because it only is to be intended to summarize various aspects of the present invention.To understand the present invention better by reference following detailed and accompanying drawing and claim.
Description of drawings
Fig. 1 is the block diagram according to exemplary illumination device of the present invention.
Fig. 2 is for the phosphorescence afterglow of the exemplary phosphorescent coloring curve map with respect to the time.
Fig. 3 is the block diagram according to another exemplary illumination device of the present invention.
Fig. 4 is the block diagram according to another exemplary illumination device of the present invention.
Fig. 5 is the CIE figure that follows the trail of the perceived color of the light of being launched by exemplary illumination device according to the present invention.
Fig. 6 is the perspective view according to exemplary illumination device of the present invention.
Fig. 7 is the perspective view that optionally cuts away the part in the exemplary illumination device of Fig. 6.
Fig. 8 is the lighting apparatus that is similar to Fig. 6, according to the sectional view of exemplary illumination device of the present invention.
Fig. 9 is the sectional view according to the alternative embodiment of lighting apparatus of the present invention.
Figure 10 a-10c is the sectional view according to another alternative embodiment of lighting apparatus of the present invention, illustrates the various states of operation.
Figure 11 is according to the sectional view of the another alternative embodiment of lighting apparatus of the present invention.
The specific embodiment
The present invention is to use the lighting apparatus that is used to simulate neon or similar illumination of light source and phosphorescent coloring, and also has the luminous intensity that is used for changing by light emitted to produce the device of particular color variation effect at this equipment.
Fig. 1 is the block diagram according to exemplary illumination device of the present invention.The device 18 that this exemplary illumination device has light source 12, optical transmission medium 14, waveguide 16 and is used to change the light intensity of being launched by light source 12.
Waveguide 16 adjacent light transmission mediums 14 are provided with, and are used to receive the light of first color and the light of second color.For various light components are mixed, and provide along the uniform luminous intensity figure of waveguide, waveguide 16 has fiber waveguide and light scattering characteristic concurrently.
Fig. 3 shows another exemplary illumination device, and it has the replacement rapport between light source 112, optical transmission medium 114 and waveguide 116.In this structure, walk around optical transmission medium 114 and directly arrive waveguide 116 by the part of the light of light source 112 emission, and by optical transmission medium 114.The observer of equipment still will perceive to have by the synthetic color of first color and second color or the light of color.
Fig. 4 shows another exemplary illumination device, and the optical transmission medium that wherein has phosphorescent coloring combines with waveguide.Like this, the exemplary illumination device of Fig. 4 has waveguide 215, and this waveguide 215 has the phosphorescent coloring of predetermined density.Waveguide 215 has fiber waveguide and light scattering characteristic concurrently, and contiguous light source 212 is provided with the light that is used for receiving first color.Can choose in the waveguide 215 phosphorescent coloring density so that phosphorescent coloring will only absorb first color light a part and launch the light of second color.Like this, the part of the light of first color will can not absorbed by phosphorescent coloring, and it is the combination of the light of the light of first color and second color that the result causes perceived color.Alternatively, can choose the phosphorescent coloring density in the waveguide 215 so that phosphorescent coloring will absorb all light of first color.Like this, perceived color will only comprise the light by second color of phosphorescent coloring emission.No matter under which kind of situation, the characteristic of waveguide 215 will provide along waveguide 215 uniform luminous intensity figures.
The structure of any exemplary illumination device described here except that above-mentioned phosphorescent coloring, can have the U.S. Patent application No.10/455 as common transfer and common pending trial, the fluorescent dye described in 639 equally.In addition, should be appreciated that described phosphorescent coloring can also comprise the combination of independent dyestuff.This specification is intended to contain all combination and the perturbations (perturbation) between fluorescent dye and the phosphorescent coloring.
With reference to the structure of the exemplary illumination device shown in figure 1,3 and 4, be used to change device 18,118,218 by the light intensity of light source 12,112,212 emissions and will cause various effects along with the perceived color that changes by the state of the light of light emitted.For example, when light source the 12,112, the 212nd, when continuous state, perceived color will be the fixed combination of first color and second color.When light source 12,112,212 then is removed or turns off, phosphorescent coloring will continue the only light of second color of emission.This specific character can be used as the useful safety device under the power failure situation, and when power failure, phosphorescent coloring will continue to launch light.In addition, this specific character can be used for producing two color systems by impulse modulation light, thereby perceived color is changed between the synthetic color and independent second color.The waveform that is applied to the power signal of light source by control can be realized more effect.For example, be similar to the power signal of sinusoidal wave form of the die-away time of phosphorescent coloring with periodic group and will cause that the intensity of light source 12,112,212 changes corresponding to power signal.To change in response to the change of the intensity of light source 12,112,212 equally by the light of phosphorescent coloring emission.Therefore, the change of the light intensity that will launch along with light of being launched by light source 12,112,212 and phosphorescent coloring by the perceived color of the light of lighting apparatus emission and changing.
The device 18,118,218 that is used to change by light source 12,112,212 light intensities of being launched is known in the present technique field, and comprises: switch mode power; Function or waveform generator; Variable resistance or dimmer switch; And simple double control switch (on-off switch).This device 18 preferably can produce pulse or other power signal waveform, comprises square wave and sine wave.Equally, this device 18,118,218 most possible control power signal waveform such as characteristics such as shape, dutycycle, amplitude and frequencies.
For example, Fig. 5 shows CIE figure, and its center line 50 is followed the trail of by the color according to the perception of the light of exemplary illumination device emission of the present invention that adopts blue led and red phosphorescent dyestuff.With sine-shaped power signal driving LED.The die-away time of sinusoidal wave period and phosphorescent coloring should be similar to produce observed color change effect.Blue led is launched the light of first color, by 1: 52 expression.In addition, 1: 54 expression is operated the color of time institute's perception in constant, full output (or direct current) attitude as LED.Like this, perceived color line 50 shows perceived color, and it to a succession of other purplish color transitions, becomes redness from slightly purple blueness then.
Fig. 6-8 shows the embodiment according to exemplary illumination device 310 of the present invention.Exemplary illumination device 310 is made up of light source 312, optical transmission medium 314 and waveguide 316 usually.Be used to change device, as mentioned above, will be connected to lighting apparatus 310 effectively by the light intensity of light emitted, but for convenience and not shown.
As mentioned above, optimized light source 312 is a plurality of light emitting diodes (LED) with first pre-color.Clearer and more definite this moment, the LED that utilizes in the one exemplary embodiment described here is the high strength with about color area of 465 to 470nm, blue LED.Blueness is the color of higher-energy in the spectrum, and the availability of the high strength of this color, high output LED makes it more preferred for the excitation phosphorescent coloring, the perceived color that this phosphorescent coloring is used to launch the more low-energy color of certain limit and therefore produces certain limit.As shown in the figure, LED can arrange with the pattern of elongating and form a string or many optical crosstalk, so that the simulation neon tube.For example, LED can be installed on the circuit board, with linear array or sequence basically as shown in the figure.
The optical transmission medium 314 of exemplary illumination device 310 is the intermediary element along light source 312 extends and contiguous light source 312 is provided with.As shown in the figure, optical transmission medium 314 has the optical receiving surface 320 and the light emission surface 322 that is used to emit light into waveguide 316 that is used to receive from the light of described light source 312 emissions.Like this, optical transmission medium 314 is actually a kind of color conversion system, and wherein phosphorescent coloring absorbs the light by first color of described light source 312 emissions, and launch second, the light of more low-yield color.One phosphorescent coloring density will allow a part to transmit by optical transmission medium 314 from the light of light source 312 or " leakage " and do not absorbed by dyestuff, by choosing such phosphorescent coloring density, the light of observing along the light emission surface 322 of light color conversion system will be perceived as color or the color with the light that is different from first pre-color.
Optical transmission medium 314 is preferably formed by mixing or being coated with the matrix that dyes by translucent basically acrylic acid, polyurethane or the similar material of the phosphorescent coloring of predetermined density.The preferred polyurethane that is used for this application is the polyurethane by the commodity EGA-202 by name of the IPN industrial group produce and market of the Haverhill of Massachusetts (Massachusetts).Exemplary dyestuff is by the luminous in the dark red as fire acrylic lacquer of pigment CP2-35 of the Risk Reactor produce and market of the Huntington Beach in California (Fire Red Acrylic Lacquer).Yet the replacement structure of the composition of optical transmission medium 314 and other dyestuff or dyestuff is possible, and is included in the spirit and scope of invention required for protection.
In addition, even after light source 312 stops emission, the phosphorescent coloring of optical transmission medium 314 also will continue the more low-energy light of the some quantity of emission.Like this, if there is power failure, lighting apparatus 310 will continue to provide some illuminations by the phosphorescent coloring (useful safety device) of intermediate light transmission medium 314.
Waveguide 316 is the elements that are shaft-like basically, preferably has the exterior curved surface 324 as light emission surface, and the inner surface 326 that is used as optical receiving surface.The light of optical transmission medium 314 input waveguides 316 below being arranged on optical receiving surface 324 is in waveguide 316 inscatterings, thus with diffusion profile from exterior curved surface 324 outgoing.This exterior curved surface 324 helps to simulate the outward appearance of neon tube.
Shell 328 preferably includes pair of sidewalls 330,332, and this oppose side wall 330,332 limits the open-ended passage that extends along the length of waveguide 316 basically.Shell 328 plays the effect of holding light source 312 and associated electrical accessories (for example, circuit board) usually.In addition, sidewall 330,332 can have inner surface, and this inner surface has the aggregation surface that is used for light is assembled and reflexed to described optical transmission medium 314.In Fig. 8 in the one exemplary embodiment shown in best, the passage that is limited by shell 328 is filled with white and pours into compound 338 with the reverberation that makes progress towards waveguide 316 on light source 312 lower parts ground.The part of the volume of open-ended passage also is filled with translucent perfusion compound 336, the position that this perfusion compound 336 partly encapsulates this light source 312 and keeps light source 312 with respect to shell 328.When adopting this translucent perfusion compound 336 in the lighting apparatus constructed according to the invention 310, perfusion compound 336 should have in essence the refractive index with the index matched of light source 312, to minimize the Fresnel loss of section.
In the embodiment of the replacement shown in Fig. 9, the coating 414 that contains phosphorescent coloring is applied to the inner surface 426 of waveguide 416.Like among the embodiment of (but not shown), the coating that contains phosphorescent coloring can be applied to the exterior curved surface 424 of waveguide 416 another kind of.In the embodiment of another similar (but not shown), waveguide 416 self may be doped with described phosphorescent coloring.In described all embodiment, will be perceived as the color or the color of light by the light of this equipment emission with first color that is different from light source 412.
Figure 10 a-10c show have light source 512, the embodiment of another replacement of optical transmission medium 514 and waveguide 516, wherein walk around optical transmission medium 514 and directly arrive waveguide 516 by the part of the light of light source 512 emissions.Figure 10 a shows original state, and wherein light source 512 at first is opened, and the phosphorescent coloring in the optical transmission medium 514 is " absorb color (charging) ", and is walked around optical transmission medium 514 and directly arrived waveguide 516 by the part of the light of light source 512 emissions.To be perceived as by the light of this equipment emission and to have the color similar to first color of light source.Figure 10 b shows a state, and wherein the phosphorescent coloring in light source 512 and the optical transmission medium 514 all emits light into waveguide 516.To be perceived as by the light of this equipment emission and to have by first color of light source and the synthetic color of second color of phosphorescent coloring.Figure 10 c shows a state, and wherein light source 512 is switched off just, and phosphorescent coloring continues the light of emission or " emitting " second color.Like this, by changing, will be perceived as the synthetic color of intensity that has by second color of first color of light source and phosphorescent coloring by the light of this equipment emission by the light intensity of light source 512 emissions and along with phosphorescent coloring absorbs and emits light and to it regularly.
Figure 11 show have light source 612, the another alternative embodiment of optical transmission medium 614 and waveguide 616, wherein optical transmission medium 614 has the first area 640 of substantial transparent, the second area 642 of first phosphorescent coloring that is doped with predetermined density and the 3rd zone 644 that is doped with second phosphorescent coloring of predetermined density.
Can realize several effects with such structure.The first, with long-life (promptly emission) slowly red emission phosphorescent coloring doping second area 642 and with short-life (promptly more fasting ejection) red emission phosphorescent coloring mix the 3rd zone 644 will strengthen institute's perception light red characteristic and with its expansion.Second, with red emission phosphorescent coloring doping second area 642, with mix the 3rd zone 644 and adopt blue led of green or yellow emission phosphorescent coloring, in fact will produce redness, green, blueness or redness, yellow, the blue system of permission aware colors (comprising white) in a big way.
Can make other modification and without departing from the spirit and scope of the present invention, this will be conspicuous for a person skilled in the art to embodiment described herein.
Claims (25)
1. lighting apparatus, it comprises:
Light source is used to launch the light of the first predetermined color; And
Optical transmission medium has the phosphorescent coloring of predetermined density, and the contiguous described light source setting of described optical transmission medium is so that the observer of described equipment perceives the light that is different from described predetermined first color.
2. lighting apparatus as claimed in claim 1 further comprises the device that is used to change by the light intensity of described light emitted, so that the color of institute's perception changes along with the state of light source.
3. lighting apparatus as claimed in claim 2, the wherein said device that is used to change by the light intensity of light emitted is a control device, this control device control is applied to the waveform of the power signal of described light source, comprises shape, dutycycle, amplitude and the frequency of power signal waveform.
4. lighting apparatus as claimed in claim 3, the described waveform that wherein is applied to the power signal of described light source is selected from square wave and the sinusoidal wave group of forming.
5. lighting apparatus as claimed in claim 1, wherein said light source are a plurality of light emitting diodes (LED).
6. lighting apparatus as claimed in claim 5, further comprise the waveguide that contiguous described optical transmission medium is provided with, described waveguide has optical receiving surface and light emission surface, described waveguide has fiber waveguide and light scattering characteristic concurrently, the described light of described thus first color and the light of described second color are received by described optical receiving surface, and launch the light of described perception thus from described light emission surface.
7. lighting apparatus as claimed in claim 6, wherein said optical transmission medium is made of the matrix of the trnaslucent materials basically of the phosphorescent coloring that is doped with described predetermined density.
8. lighting apparatus as claimed in claim 7, wherein by the part of the light of light emitted by described optical transmission medium transmission and do not absorbed by described dyestuff.
9. lighting apparatus as claimed in claim 7 is wherein walked around optical transmission medium and is directly arrived described waveguide by the part of the light of light emitted, and by described optical transmission medium.
10. lighting apparatus as claimed in claim 6, wherein said optical transmission medium is made of the matrix of trnaslucent materials basically, this basically trnaslucent materials have the first area of substantial transparent, the second area of first phosphorescent coloring that is doped with described predetermined density and the 3rd zone that is doped with second phosphorescent coloring of predetermined density so that the combination of the only following color of described perception:
Described first color from the light of the described light emitted by described first area;
Described second color of the light of the described dyestuff emission of next free described second area; And
The 3rd color of the light of the described dyestuff emission in next free described the 3rd zone.
11. lighting apparatus as claimed in claim 5, wherein said optical transmission medium also comprises:
Fiber waveguide and light scattering characteristic;
The interior lights receiving surface is used to receive the described light by described first color of described light emitted; And
Exterior light emission curved surface is used to launch the light by the color of described photosynthetic described perception of the described light of described first color and described second color.
12. lighting apparatus as claimed in claim 1 further comprises the shell with the pair of sidewalls that defines passage, described sidewall has inner surface, and described light source is arranged in the described passage, and described inner surface reflexes to described optical transmission medium with light.
13. a lighting apparatus, it comprises:
A plurality of light emitting diodes, the light of first color that emission is predetermined; And
Light color conversion system comprises:
Optical receiving surface, contiguous described light emitting diode setting;
Light emission surface; And
Phosphorescent coloring, after the light that absorbs from described light emitting diode, the light of emission pre-color, wherein the perceived color of light of observing along the light emission surface of described light color conversion system is different from the first predetermined color by the light of described light emitting diode emission.
14. the lighting apparatus described in claim 13, also comprise have predetermined length and have optical receiving surface and light emission surface be shaft-like element basically, described rod-shaped elements is made of the material that has fiber waveguide and light scattering characteristic concurrently, and the light emission surface setting of the contiguous described light color conversion system of the optical receiving surface of described rod-shaped elements.
15. the lighting apparatus described in claim 14 further comprises shell, this shell extends along the predetermined length of described rod-shaped elements basically, and holds described a plurality of light emitting diode and associated electrical accessories.
16. the lighting apparatus described in claim 15, wherein said shell generally includes the pair of sidewalls that defines open-ended passage, and described a plurality of light emitting diodes are received and are contained in the described open-ended passage.
17. the lighting apparatus described in claim 13 further comprises the device that is used to change by the light intensity of described a plurality of light emitting diode emissions.
18. the lighting apparatus described in claim 17, the wherein said device that is used to change by the light intensity of described a plurality of light emitting diodes emissions is the device that is used to control the waveform of the power signal that is applied to described light emitting diode.
19. a lighting apparatus, it comprises:
Light source, the light of first color that emission is predetermined;
Basically be shaft-like element, have predetermined length, and contiguous described light source setting, described element is made of the material that has fiber waveguide and light scattering characteristic concurrently, thereby makes preferential length scattered light along described rod-shaped elements; And
Optical transmission medium, usually the matrix by light transmitting material and phosphorescent coloring constitutes, described optical transmission medium comprises the optical receiving surface and the light emission surface that is used for light is emitted to described rod-shaped elements that is used to receive from the light of described light emitted, described phosphorescent coloring is launched the light of second color after the light that absorbs from described light source, wherein have uniform basically intensity by the light of the gathering of the last emission of described rod-shaped elements along the length of described rod-shaped elements.
20. the lighting apparatus described in claim 19, wherein said light source are a plurality of light emitting diodes.
21. the lighting apparatus described in claim 19 further comprises shell, this shell extends by the predetermined length of described rod-shaped elements basically, and holds described light source and associated electrical accessories.
22. the lighting apparatus described in claim 21, wherein said shell generally includes the pair of sidewalls that defines open-ended passage, and described light source is received and is contained in the described open-ended passage.
23. the lighting apparatus described in claim 22, wherein said sidewall also has inner surface, and this inner surface has the light aggregation surface, and described smooth aggregation surface is with the light gathering and reflex to described optical transmission medium.
24. the lighting apparatus described in claim 19 further comprises the device that is used to change by the light intensity of described light emitted.
25. the lighting apparatus described in claim 24, the wherein said device that is used to change by the light intensity of described light emitted is the device that is used to control the waveform of the power signal that is applied to described light source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53358103P | 2003-12-31 | 2003-12-31 | |
| US60/533,581 | 2003-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1902434A true CN1902434A (en) | 2007-01-24 |
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ID=34748920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800395797A Pending CN1902434A (en) | 2003-12-31 | 2004-12-29 | Illumination device for simulating neon or similar lighting in various colors |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1706665A4 (en) |
| CN (1) | CN1902434A (en) |
| WO (1) | WO2005065356A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105765298A (en) * | 2013-07-15 | 2016-07-13 | L·E·S·S·有限责任公司 | Coherent light waveguide illumination system with speckle noise reducer |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7914197B2 (en) | 2005-12-27 | 2011-03-29 | Showa Denko K.K. | Light guide member, flat light source device, and display device |
| WO2008013304A1 (en) * | 2006-07-28 | 2008-01-31 | Fujifilm Corporation | Surface area illumination device |
| CN101680992B (en) | 2007-06-04 | 2016-10-19 | 皇家飞利浦电子股份有限公司 | The illuminator of Color tunable, lamp and luminaire |
| US7618157B1 (en) * | 2008-06-25 | 2009-11-17 | Osram Sylvania Inc. | Tubular blue LED lamp with remote phosphor |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2560117A (en) * | 1947-01-31 | 1951-07-10 | Robert W Mallary | Sign |
| DE828629C (en) * | 1949-04-28 | 1952-01-21 | Dr Alexander Ringleb | Illuminated sign |
| US5810463A (en) * | 1994-11-28 | 1998-09-22 | Nikon Corporation | Illumination device |
| US6412971B1 (en) * | 1998-01-02 | 2002-07-02 | General Electric Company | Light source including an array of light emitting semiconductor devices and control method |
| US6139174A (en) * | 1998-08-25 | 2000-10-31 | Hewlett-Packard Company | Light source assembly for scanning devices utilizing light emitting diodes |
| US6350041B1 (en) * | 1999-12-03 | 2002-02-26 | Cree Lighting Company | High output radial dispersing lamp using a solid state light source |
| WO2002013490A2 (en) * | 2000-08-07 | 2002-02-14 | Color Kinetics Incorporated | Automatic configuration systems and methods for lighting and other applications |
| DE10109850A1 (en) * | 2001-03-01 | 2002-09-05 | Wavelight Laser Technologie Ag | Device for generating white light |
| US6784603B2 (en) * | 2001-07-20 | 2004-08-31 | Teledyne Lighting And Display Products, Inc. | Fluorescent lighting apparatus |
-
2004
- 2004-12-29 CN CNA2004800395797A patent/CN1902434A/en active Pending
- 2004-12-29 WO PCT/US2004/043867 patent/WO2005065356A2/en active Application Filing
- 2004-12-29 EP EP04815860A patent/EP1706665A4/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105765298A (en) * | 2013-07-15 | 2016-07-13 | L·E·S·S·有限责任公司 | Coherent light waveguide illumination system with speckle noise reducer |
| CN105765298B (en) * | 2013-07-15 | 2019-07-16 | L·E·S·S·有限责任公司 | Coherent light waveguide illumination system with speckle noise damper |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005065356A2 (en) | 2005-07-21 |
| EP1706665A2 (en) | 2006-10-04 |
| EP1706665A4 (en) | 2007-03-21 |
| WO2005065356A3 (en) | 2006-01-05 |
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