Source: https://patents.google.com/patent/KR101408622B1/en
Timestamp: 2019-12-07 19:24:56
Document Index: 106112558

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60', 'Application No. 60']

KR101408622B1 - Shifting spectral content in solid state light emitters by spatially separating lumiphor films - Google Patents
Shifting spectral content in solid state light emitters by spatially separating lumiphor films Download PDF
KR101408622B1
KR101408622B1 KR1020087020293A KR20087020293A KR101408622B1 KR 101408622 B1 KR101408622 B1 KR 101408622B1 KR 1020087020293 A KR1020087020293 A KR 1020087020293A KR 20087020293 A KR20087020293 A KR 20087020293A KR 101408622 B1 KR101408622 B1 KR 101408622B1
lumipheral
lumphore
KR1020087020293A
KR20080092452A (en
안토니 폴 반데벤
2006-01-20 Priority to US76045506P priority Critical
2006-01-20 Priority to US60/760,455 priority
2006-01-23 Priority to US76131006P priority
2006-01-23 Priority to US60/761,310 priority
2006-04-24 Priority to US79437906P priority
2006-04-24 Priority to US60/794,379 priority
2007-01-19 Application filed by 크리, 인코포레이티드 filed Critical 크리, 인코포레이티드
2007-01-19 Priority to PCT/US2007/001382 priority patent/WO2007084640A2/en
2008-10-15 Publication of KR20080092452A publication Critical patent/KR20080092452A/en
2014-06-17 Publication of KR101408622B1 publication Critical patent/KR101408622B1/en
An illumination device comprising at least one solid state light emitter, at least one first lumipheral, and at least one second lumiphar spaced from the first lumipheral. The solid state light emitters may be light emitting diodes. A method of manufacturing a lighting device, the method comprising: positioning at least one second lumphore for at least one solid state light emitter to be spaced apart from the first lumiphore outside of at least one first lumophore. A method of illumination comprising the steps of providing electricity to at least one solid state light emitter of such an illumination device.
Lighting device, solid state light emitter, lumipore, light emitting diode, lighting device manufacturing method.
TECHNICAL FIELD [0001] The present invention relates to a spectral content shifting method of a solid state light emitter by spatial separation of a lumi-
The present invention relates to a lighting device and more particularly to a lighting device comprising at least two solid state light emitters (e.g. light emitting diodes) and at least two light emitting materials each containing at least one light emitting material (e.g. one or more phosphors) Lt; RTI ID = 0.0 &gt; lumiphor &lt; / RTI &gt; The present invention also relates to an illumination method and a method of manufacturing the illumination apparatus.
A large proportion of electricity produced in the United States each year (estimated at 25%) is used for lighting. Therefore, there is a need to provide lighting that uses energy more efficiently. It is well known that incandescent bulbs are very inefficient energy sources, and about 90% of the electricity consumed by incandescent bulbs emits heat rather than light. Fluorescent lamps are more efficient (about 10 times) than incandescent bulbs, but they are still less efficient than solid state light emitting devices, for example light emitting diodes.
In addition, the incandescent lamp has a relatively short lifetime in comparison with the normal lifetime of the light emitting diode, that is, has a lifetime of usually about 750-1000 hours. In comparison, for example, the lifetime of a light-emitting diode can usually be measured in decades. Fluorescent lamps have a longer lifetime (eg, 10,000 to 20,000 hours) than incandescent bulbs, but provide poor color reproduction compared to incandescent bulbs. Color reproducibility is typically measured using the Color Rendering Index (CRI Ra), which is a relative measure of surface color shift when illuminated by an object on a particular lamp. Daylight has the highest CRI (100 Ra), incandescent lamps are relatively close (Ra greater than 95), fluorescent lamps are more imprecise (typically 70-80 Ra). Certain types of special lighting have very low CRI (e.g., mercury vapor, etc., or sodium has an Ra of about 40 or less).
Another problem encountered with conventional lighting fixtures is that it is necessary to periodically replace the lighting device (e.g., a light bulb, etc.). These problems are more pronounced in places where access is difficult (eg, vaulted ceilings, bridges, tall buildings, traffic tunnels) and / or where replacement costs are very high. Conventional equipment has a typical lifetime of about 20 years, which corresponds to at least about 44,000 hours of use of the light generating device (based on an average of 6 hours of use per day for 20 years). The life of a light generating device is typically very short, thus creating the need for periodic replacement.
Therefore, efforts are underway to develop methods for using solid-state light emitters, such as light-emitting diodes, in place of incandescent lamps, fluorescent lamps and other light generating devices used for a wide range of applications for these and other reasons. Further, where light emitting diodes (or other solid state light emitters) are already used, light emitting diodes having improved energy efficiency, CRI Ra, contrast, light efficiency (lm / W) and / (Or other solid state light emitters).
Light emitting diodes are semiconductor devices that convert current into light. For a range of ever-expanding applications, a wide variety of light emitting diodes are being used in an increasingly diverse range of applications.
More specifically, the light emitting diode is a semiconductor device that emits light (ultraviolet light, visible light, or infrared light) when a potential difference is applied across the p-n junction structure. There are several well known methods for making light emitting diodes and various related structures, and the present invention can employ any such device. For example, Chapter 7 of the Physics of Semiconductor Devices (2nd ed., 1981), Sze et al. 12-14 and Modern Semiconductor Device Physics (1998) Desc / Clms Page number 2 &gt; various photonic devices, including photonic devices.
As used herein, the expression "light emitting diode" is used to refer to a basic semiconductor diode structure (i.e., chip). An "LED" (e.g.) widely known and commercially sold in an electronics store typically represents a "packaged" device made of several components. Such packaged devices typically include semiconductor-based light emitting diodes such as those described in U.S. Patent Nos. 4,918,487, 5,631,190, and 5,912,477, various wire connections, and packages that surround the light emitting diodes .
As is well known, light emitting diodes generate light by exciting electrons across the bandgap between the conduction band and the valence band of the semiconductor active (light emitting) layer. The electron transition produces light with a wavelength corresponding to the bandgap. Therefore, the color (wavelength) of the light emitted by the light emitting diode depends on the semiconductor material constituting the light emitting diode active layer.
Although the development of solid state light emitters has radically changed the lighting industry in many ways, some features of solid state light emitters have yet to be fully addressed. For example, the emission spectrum of any particular light emitting diode is typically concentrated around a single wavelength (depending on the configuration and structure of the light emitting diode), which is desirable for some applications but not for other applications (e.g., Such an emission spectrum in the illumination provides a very low CRI).
Light perceived as white necessarily requires mixing of two or more colors (or wavelengths), and a single light emitting diode junction capable of generating white light has not yet been developed. A "white" light emitting diode having light emitting diode pixels formed of red light, green light and blue light emitting diodes, respectively, was prepared. Other manufactured "white" light-emitting diodes include (1) light emitting diodes that produce blue light, and (2) light emitting materials (e.g., phosphors) that are excited by light emitted from the light emitting diode to emit yellow light The blue light and the yellow light are mixed to generate light perceived as white.
Also, the blending of primary colors to create combinations of non-primary colors is generally well understood in this and other fields. In general, the 1931 CIE Chromaticity Diagram (an international standard for primary colors set in 1931) and the 1976 CIE Chromaticity Diagram (similar to the 1931 Chromaticity Diagram, but similar distances on the chromaticity diagram are improved to show perceived similar color differences) Are usefully referenced to specify the color as a weighted sum of the primary colors.
Thus, solid state light emitters may be used individually or in any combination to produce any desired perceived color (including white), and may optionally include one or more light emitting materials (e.g., phosphors or phosphors) Scintillators) and / or filters. Thus, for example, efforts have been made to replace existing light sources with solid state light emitters in order to improve energy efficiency, CRI, light efficiency (lm / W) and / or duration of use, It is not limited.
A wide variety of light emitting materials (also known as lumiphoric media or luminophoric media, for example as disclosed in U.S. Patent No. 6,600,175, the disclosure of which is herein incorporated by reference) are well known and readily available to those skilled in the art have. For example, a phosphor is a luminescent material that emits a responsive radiation (e.g., visible light) when excited by an exciting radiation source. In many cases, the response radiation has a different wavelength than the wavelength of the excitation radiation. Other examples of luminescent materials include scintillators, day glow tapes and inks that emit light in the visible light spectrum by illumination of ultraviolet light.
The luminescent material can be down-converted, i. E., Material or up-converting material that converts photons to lower energy levels (longer wavelengths), i. E. And can be classified as a material that converts light into light containing photons at a higher energy level (shorter wavelength).
Including a light emitting material in an LED device is accomplished by adding the light emitting material to a transparent plastic encapsulant material (e.g., epoxy-based or silicon-based material) as described above, for example, by a blending or coating process .
For example, U.S. Patent No. 6,963,166 (YANO '166) discloses a light emitting diode chip, a bullet-shaped transparent housing for covering the LED chip, a lead for supplying current to the LED chip, And a cup reflector for reflecting light emitted from the light emitting diode chip in a uniform direction, wherein the light emitting diode chip is encapsulated into a first resin part and further encapsulated in a second resin part, Emitting diode lamp. According to YANO '166, the first resin part fills the cup reflector with a resin material, mounts the light emitting diode on the bottom of the cup reflector, and then electrically connects the cathode and the anode to the lead wire by wires It is obtained by curing the resin. According to YANO '166, a phosphor is dispersed in the first resin part so as to be excited by the radiation (A) of the light emitting diode chip, and the excited phosphor emits fluorescence having a longer wavelength than the light (A) And a part of the light A is transmitted through the first resin part including the phosphor and consequently light (C) due to mixing of light (A) and light (B) is used as illumination do.
As described above, "white LED light" (i.e., light perceived as a color close to white or white) has been studied to potentially replace incandescent lamps. A representative example of a white LED lamp includes a package of a blue light emitting diode chip made of gallium nitride (GaN) and coated with a phosphor such as YAG. In such an LED lamp, the blue light emitting diode chip generates a radiation of about 450 nm wavelength, and the phosphor receives the radiation to generate yellow fluorescence having a wavelength peak at about 550 nm. For example, in some designs, a white light emitting diode is fabricated by forming a ceramic phosphor layer on the output surface of a blue light emitting semiconductor light emitting diode. A portion of the blue light emitted from the LED chip passes through the phosphor and a portion of the blue light emitted from the LED chip is absorbed by the phosphor to excite the phosphor and emit yellow light. A portion of the blue light emitted from the light emitting diode chip passing through the phosphor is mixed with the yellow light emitted by the phosphor. The observer perceives a mixture of blue light and yellow light as white light.
A design is provided in which existing LED component packages and other electronic components are assembled into one facility. In such a design, a packaged LED is mounted on a circuit board, which is mounted on a heat sink, which is mounted on the equipment housing with the required drive electronics. In many cases, an additional optical system (secondary to the package part) is also needed.
There is a need to use solid state light emitters with a greater energy efficiency, improved CRI, improved light efficiency (lm / W) and / or longer usage duration for a wider variety of applications.
At least one first lumipore,
And at least one second lumipher spaced apart from the first lumiphar.
In some embodiments of this aspect of the present invention, there is provided a light source comprising: (1) light emitted from the at least one solid state light emitter and unconverted from the at least one first lumophore; (2) The light emitted from the light emitter is converted by the at least one first lumipore and then the light emitted from the at least one first lumphore is absorbed by the at least one first lumipore, The mixed light of excitation of the first lumphore, which is subsequently "re-emitted" by the at least one first lumphore, is surrounded by the first, second, third and fourth line segments 1931 CIE chromaticity diagram, wherein the first line segment connects the first point to the second point, the second line segment connects the third point to the third point, The third line segment connects a third point to a fourth point and the fourth line segment connects a fourth point to a first point and the first point connects to an x, y And the second point has x, y coordinates of 0.35, 0.45, the third point has x, y coordinates of 0.12, 0.22, and the fourth point has x, y coordinates of 0.20, 0.075 .
In some embodiments of this aspect of the invention, the solid state light emitter is a light emitting diode that emits light at a wavelength within the ultraviolet range or within the range of up to 525 mm in the visible range.
There is provided a method for manufacturing an illumination device comprising at least one second lumophore for at least one solid state light emitter, said light emitter being spaced apart from said first lumophore on the outside of at least one first luminifer .
Wherein the solid state light emitter is located within at least one first lumipheral, wherein the at least one first lumphore is spaced apart from at least one second lumipheral, Wherein the first lumphore is located at least partially between the light emitting diode and the second lumipheral.
And providing electricity to the at least one solid state light emitter such that the solid state light emitter emits light from the solid state light emitter through the first luminifer and then through the second luminifer, The first lumphore is spaced apart from the second lumipher. The second lumphore further comprises at least one additive selected from the group consisting of a diffuser, a scatterer, and a tint.
There are "white" LED light sources that are relatively efficient but have poor color rendering properties (e.g., Ra less than 75), which are particularly poor in red color rendering properties and also in green color rendering properties. This means that many objects, including ordinary people's complexions, foods, labels, paints, posters, signage, clothing, ornaments, plants, flowers, cars, etc., . Typically, such white LEDs have a color temperature of about 5000K, which is generally not visually convenient for general illumination, but may be desirable for commercial products or for advertising and printed matter lighting.
Some so-called "warm white" LEDs have a more suitable color temperature (typically 2700 to 3500K) and a better CRI (yellow and red phosphor mixtures have a high value of Ra = 95) More than half of the "white" LEDs.
An aspect associated with the present invention may be represented by a 1931 CIE (Commission International de l'Eclairage) chromaticity diagram or a 1976 CIE chromaticity diagram. Figure 1 shows a 1931 CIE chromaticity diagram. Figure 2 shows a 1976 chromaticity diagram. Figure 3 shows an enlargement of the 1976 chromaticity diagram to show the blackbody locus in detail. Those skilled in the art are familiar with such diagrams, and such diagrams are readily available (for example, searching the Internet for "CIE Chromaticity Diagram ").
The CIE chromaticity diagram shows the human color perception through two CIE parameters x and y (for the 1931 diagram) or u 'and v' (for the 1976 diagram). A technical description of the CIE chromaticity diagram is given in, for example, " Encyclopedia of Physical Science and Technology ", by Robert A. Meyers, 1987 edition, vol. 7, 230-231. The spectral colors are distributed around the edge of the space drawn by the contour containing all the hues perceived by the human eye. The boundary line represents the maximum saturation of the spectral colors. As described above, the 1976 CIE chromaticity diagram is similar to the 1931 diagram except that the 1976 diagram was modified to show similar color differences where similar distances on the chromaticity diagram are perceived.
In the 1931 diagram, the deviation from one point of the diagram may be expressed in coordinates, or alternatively, in MacAdam ellipses to indicate the degree of perceived color difference. For example, the locus of points specified as being 10 MacArd ellipse distances from a designated hue specified by a specific set of coordinates on the 1931 diagram is composed of tints that are perceived differently from the designated hue to the same degree The same is true for the trajectories of points specified as being as close as positive MacAdam ellipses).
Since similar distances on the 1976 diagram represent similarly perceived color differences, the deviation from a point on the 1976 diagram can be represented by the coordinates of u 'and v', for example, the distance from the point = ' 2 + Δv' 2 ) 1/2 , and the tints specified by the trajectories of the points separated by the same distance from the designated tones are composed of tones perceived differently from the designated tones to the same extent.
The chromaticity coordinates and CIE chromaticity diagrams shown in FIGS. 1 through 3 are shown in the "Fluorescent Lamp Phosphors" (The Pennsylvania State University Press 1980), all of which are incorporated herein by reference. H. Pp. 98-107 of K. H. Butler, "Luminescent Materials" (Springer-Verlag 1994), pp. Are described in detail in various books and other publications, such as pages 109-110 of G. Blasse et al.
The chromaticity coordinates (i.e., color points) set in accordance with the blackbody locus are represented by Planck's equation E (?) = A (?) When E is the radiation intensity,? Is the emission wavelength, T is the color temperature of the black body, lambda -5 / (e (B / T) -1). The color coordinates in the vicinity of the blackbody locus produce pleasant white light for human observers. The 1976 CIE diagram includes a temperature listing according to the blackbody trajectory. This temperature listing shows the color path of the blackbody radiation that is raised to such temperature. When a heated object emits incandescent light, it emits red light first, then yellow light, then white, and finally blue light. This is because the wavelength associated with the peak of the radiation of the blackbody radiation is gradually decreased according to the Wien Displacement Law according to the rising temperature. Thus, illuminators that produce light on or near the blackbody locus can be described by their color temperature. In addition, the 1976 CIE diagrams show symbols A, B, C, D, and E, which refer to light generated by some standard illuminators, each identified by a corresponding A, B, C, D, and E illuminator.
CRI is a relative measure of how the color rendering of an illumination system is compared to a blackbody radiator or other specified criteria. The CRI Ra has a value of 100 when the color coordinates of the test color set illuminated by the illumination system coincide with the coordinates of the same test colors illuminated by the reference radiator.
BRIEF DESCRIPTION OF THE DRAWINGS The invention may be more fully understood from the following detailed description of the invention and the accompanying drawings.
Figure 2 shows a 1976 chromaticity diagram.
Figure 3 shows an enlargement of the 1976 chromaticity diagram to show the blackbody locus in detail.
Fig. 4 shows a first embodiment of a lighting device according to the present invention.
5 shows a second embodiment of a lighting device according to the present invention.
As described above, in one aspect, the present invention provides a lighting device comprising at least one solid state light emitter, at least one first lumphore, and at least one second lumiphar spaced from the first lumiphar . As used herein, the expression "lumporal" refers to any element that includes any light emitting element, i.e., a light emitting material in which various classes are well known and readily available to those skilled in the art.
The lighting devices according to this aspect of the invention may comprise a plurality of solid state light emitters as required.
A wide variety of solid state light emitters are well known to those skilled in the art and any of these solid state light emitters can be employed in the illumination devices according to the present invention.
As described above, at least one solid state light emitter employed in the present invention is selected from light emitting diodes. A wide variety of light emitting diodes are well known to those skilled in the art, and any of such solid state light emitting diodes can be employed in the illumination devices according to the present invention. Examples of such light emitting diodes include inorganic and organic light emitting diodes, which are variously well known in the art.
A wide variety of light emitting materials are well known to those skilled in the art, and any of these light emitting materials may be employed in the illumination devices according to the present invention.
(1) light that is emitted from the at least one solid state light emitter and is not converted from the at least one first lumphore,
(2) light emitted from the at least one first lumipore after being converted by the at least one first lumipore as light emitted from the at least one solid state light emitter (i. E., The at least one first lumi- The mixed light of the first luminescent light, which is absorbed by the phase and excites the at least one first luminescent, and is subsequently "re-emitted" by the at least one first luminescent,
Y color coordinates within the region on the 1931 CIE chromaticity diagram enclosed by first, second, third and fourth line segments, said first line segment having a first point at a second point The second line segment connects a second point to a third point, the third line segment connects a third point to a fourth point, and the fourth line segment connects a fourth point to a first point, Wherein the first point has x, y coordinates of 0.45, 0.35, the second point has x, y coordinates of 0.35, 0.45, and the third point has x, y coordinates of 0.12, 0.22 And the fourth point has x, y coordinates of 0.20 and 0.075. Also, in some embodiments, the at least one solid state light emitter may be light having any wavelength or wavelengths within the ultraviolet range or up to 525 mm in the visible range, e.g., within the ultraviolet range or within the visible range, Or less of the wavelength (s).
The one or more first lumiphors and the one or more second lumiphors may be any lumiphor known individually to those skilled in the art, as described above. For example, each of the at least one first lumipheral and the at least one second lumiphar may individually include (or essentially consist of, or constitute) a phosphor. Each of the at least one lumipore may be formed, for example, of epoxy, silicon, glass or any other suitable material (e.g., one or more phosphors in any given lumipore containing one or more binders) (E. G., Transparent, substantially transparent, or to some extent diffuse) binder made of one or more materials (e. For example, in general, the thicker the phosphor, the lower the weight percentage of the phosphor. Depending on the total thickness of the lumipore, the weight percent of the phosphor may be, for example, from about 0.1 weight percent to about 100 weight percent (e. G., A lumiore formed by applying a pure phosphor to a hot isostatic pressing procedure) ). &Lt; / RTI &gt;
A representative first embodiment of a lighting device according to the present invention is shown in Fig. 4, the first embodiment includes a light emitting diode 11, a first louvre 12, a first reflective element 13, a transparent element 14 (also referred to herein as a package element) Two lumiphors 15, and an electrode 17.
In this first embodiment, the light emitting diode 11 is mounted in the first louvre 12 located in the first reflective element 13. [ For example, the first louvre 12 may be formed by filling the cup reflector 13 with a resin material, mounting the LED chip 11 on the bottom of the cup reflector 13, (The phosphor is dispersed in the resin material so as to be excited by the light emitted from the light emitting diode chip 11) (that is, in FIG. 4 The light emitting diode 11 and the first lumophore 12 are "in" within the first reflective element such that they are between the inner surfaces of each of the first reflective elements 13 (in the orientation shown).
In this first embodiment, the light emitting diode 11, the lumphore 12, and the first reflective element 13 are all located within the transparent element 14. The light emitting diode 11, the louvre 12, the first reflective element 13 and the transparent element 14 together are similar to conventional similar LED packages, May be a cool light 5mm LED package commercially available from Nichia under the name "NSPW500 CS ".
In the embodiment shown in Figure 4, a second lumophore 15 is additionally provided. In this embodiment, only a portion of the outer surface of the transparent element 14 is covered by the second louvre 15 so that light reflected and / or backscattered can be easily emitted from the illuminator. In general, any desired portion of the outer surface of the transparent element 14 may be covered by the second louvre 15, and in the embodiment shown in Figure 4, (I.e., in the orientation shown in Fig. 4, the virtual plane 16 (the virtual plane is defined by the first reflective element 13 &lt; RTI ID = 0.0 &gt; , The entire outer surface of the transparent element 14 located above the transparent element 14 is completely covered by the second louvre 15 and the rest of the outer surface of the transparent element 14 Is not covered by the second louvre 15 (this arrangement is slightly more than necessary to cover all of the surface area of the transparent element 14 where the light emitted by the LED chip 11 impinges Thereby covering the wide transparent element 14 area ) However, according to the present invention, instead the second lumiphors (or lumiphors) may optionally surround (or tangentially touch) any or all of the outer surface of the transparent element, as needed) .
4, the second lumophore 15 may be composed of a transparent encapsulating material composed of Dymax light cap 9617 and a YAG: CE (weight percent of 4.67%). have.
The embodiment shown in Figure 4 can be used to convert a blue LED chip to a cool white color, for example using YAG, and convert the outer surface of the package to any desired light emitting material, such as one or more phosphors, A phosphorescent phosphor such as green or red that emits a color spectrum).
The one or more second lumiphors may be applied to the substrate by any suitable method, for example by coating (e.g., by dipping, painting, spraying, electrostatically applying, etc.) (E.g., liquid molding, injection molding, transfer molding, etc.).
The light emitted by the illumination device shown in Fig. 4 is in the spectrum of x = 0.35 to 0.40 and y = 0.40 to 0.48 (such light is more comfortable for many people and / or situations) (I.e., for a device similar but not including the second lumiphore 15) is maintained or actually improved.
5 shows a second embodiment of a lighting device according to the present invention. 5, it includes a light emitting diode 11, a first lumphore 12, a first reflective element 13, a transparent element 14 and a second lumipheral 15 as in the first embodiment , A lighting device 20 comprising a second reflective element 21 (in the orientation shown in the figure) below said light emitting diode package is shown.
Although the outer surfaces of the transparent elements of the embodiments shown in Figures 4 and 5 have a substantially dome shape, it can be of any desired shape (e.g., flat or irregular) ).
In such an arrangement, the light-emitting diode excites the luminescent material contained in the first lumipheral to produce light (e.g., cool white light at about 5600 K), which is then emitted to the second lumipore Collision. A portion of the cool light is reflected back from the second lumophore and exits the package (as described above, the size of the LED is preferably much smaller than the second lumphore, Only a small amount of light is absorbed by the light emitting diode chip). For example, designs for other conventional yellow series of light have been posteriorly reflected in the chip to provide only about 14 lumens per watt, while in the yellow based series, which provides about 60 lumens per watt Light can be achieved, the point of which is that according to some embodiments according to the present invention, much of the non-converting light is captured as a result of being emitted from the package to the reflective surface.
In any of the illuminating devices according to the invention comprising the first and second embodiments described above, the at least one second lumphore may be any combination of a plurality of Of the second lumipore element. For example, the illumination device according to the present invention may comprise a plurality of second luminous means, which are physically separated from each other and located in different planes, if necessary. If desired, a plurality of second lumiphors may be provided such that each of the second lumiphors emits from the first lumophore and is positioned above the reflective element (e.g., in a plane 16 ) Above, the light emitted from the illuminator may be positioned to pass through at least one of the second lumiphors.
In some embodiments according to the present invention, the surface area of the at least one second lumipheral is at least twice as large as the surface area of the at least one solid state light emitter (or the surface area of the at least one first lumiphore) In the example, this ratio is larger (for example, 3 times, 4 times, 5 times, 6 times, 7 times, or 10 times or more).
Similarly, the illumination device according to the present invention may comprise a plurality of first luminaires positioned in any desired way, if desired.
In a representative example, a 5 mm packaged LED is employed because it can remain spaced apart from the printed circuit board and a reflective layer can be added.
The degree to which the second lumphore encompasses the first lumphore (and / or any transparent or substantially transparent element located between the first lumiphore and the second lumphore) is, for example, (I. E., From the light emitting diode chip 11 to the top surface of the first reflective element 13), in the embodiment as described above, The portion of the light from the LED package that impinges on the outer surface of the LED package, that is, the outer surface of the transparent element 14). In other words, in the embodiment including the transparent element, the inner surface portion of the transparent element dome at least colliding with the light from the LED chip is preferably covered by the second lumphore (even if the transparent element is not employed, The same considerations apply when determining the position of the second lumipheral or lumilar and their relative sizes).
In any illumination device according to the present invention, one or more air spaces may be provided at any position between the at least one first lumphore and the at least one second lumphore (either alone or in one or more transparent or substantially transparent In addition to transparent media).
The light emitting material (materials) may be any desired light emitting material. As described above, those skilled in the art are familiar with a wide variety of luminescent materials and are readily available. The one or more light emitting materials may be downconverted or upconverted or may comprise a combination of the two. For example, the first luminescent may comprise one or more down converting luminescent materials.
For example, the at least one light emitting material may be selected from a phosphor, a scintillator, a dayglass tape, and an ink which emits light in a visible light spectrum by illumination with ultraviolet light or the like.
The one or more luminescent materials may be provided in any given form. For example, the light emitting element may be embedded in a resin (i.e., a polymer matrix) such as a silicon material, epoxy, or glass.
The light sources of the visible light of the illumination device of the present invention may be arranged, mounted, received in any desired manner, and mounted in any given housing or facility. Skilled artisans are familiar with a wide variety of arrangements, mounting designs, power supplies, housings, and equipment, and any such arrangements, designs, devices, housings, and equipment may be employed in connection with the present invention. The lighting devices of the present invention may be electrically connected (or selectively connected) to any given power supply, and those skilled in the art are familiar with these various types of power supplies.
For example, light emitting diodes and lumipores that can be used in the practice of the present invention are described below.
(1) United States Patent Application No. 60 / 753,138, filed on December 22, 2005, entitled " Lighting Device ", inventor Gerald H. Gregory H. Negley, attorney docket number 931_003 PRO);
(2) the name of the invention, which is hereby incorporated by reference in its entirety, on April 24, 2006, entitled " Shifting Spectral Content in LEDs by Spatially Separating Lumiphor Films " Filed U.S. Patent Application No. 60 / 794,379 (inventors: Gerald H. Nengli and Antony Paul van de Ven; attorney docket number 931_006 PRO);
(3) U.S. Patent Application No. 60 / 808,702, filed May 26, 2006, entitled "Lighting Device," the entirety of which is hereby incorporated by reference, inventors: Gerald H. Negley and Anthony Paul Attorney docket number 931_009 PRO);
(4) U.S. Provisional Patent Application Serial No. 60 / 602,301, filed May 26, 2006, entitled " Solid State Light Emitting Device and Method of Making Same " 808,925 (inventors: Gerald H. Negly and Neal Hunter, attorney docket number 931_010 PRO);
(5) U.S. Patent Application No. 60 / 802,697, filed May 23, 2006, entitled "Lighting Device and Method of Making," the entirety of which is hereby incorporated by reference, Attorney docket number 931_011 PRO);
(6) U.S. Patent Application No. 60 / 839,453, filed on August 23, 2006, entitled " LIGHTING DEVICE AND LIGHTING METHOD ", the entirety of which is hereby incorporated by reference, Vandeben and Gerald H. Negli; attorney docket number 931_034 PRO);
(7) U.S. Patent Application No. 60 / 857,305, filed on November 7, 2006, entitled " LIGHTING DEVICE AND LIGHTING METHOD ", the entirety of which is hereby incorporated by reference, Vandeben and Gerald H. NEGLE; attorney docket number 931_027 PRO);
(U.S. Patent Application Serial No. 60 / 851,230, filed October 12, 2006, entitled " LIGHTING DEVICE AND METHOD OF MAKING SAME ", the entirety of which is hereby incorporated by reference in its entirety (8) : Gerald H. H. Nuggets; docket number 931_041 PRO); And,
(U.S. Patent Application No. 60 / 839,453, filed on August 23, 2006, entitled " LIGHTING DEVICE AND LIGHTING METHOD ", the entirety of which is hereby incorporated herein by reference) Vandeben and Gerald H. Negli; attorney docket number 931_034 PRO);
A mounting structure, a design for mounting light sources of visible light, a device for supplying electricity to light sources of visible light, a housing for light sources for visible light, a light source for visible light, Representative examples of power supplies for the lighting assembly, the light sources of the visible light, and the entire lighting assembly are described below.
(1) U.S. Patent Application No. 60 / 752,753, filed on December 21, 2005, entitled "Lighting Device," the entirety of which is hereby incorporated by reference, inventors: Gerald H. Negley, Vandeben and Neil Hunter; attorney docket no. 931_002 PRO);
(2) U.S. Patent Application No. 60 / 798,446, filed on May 5, 2006, entitled "Lighting Device", the entirety of which is hereby incorporated by reference (inventor: attorney docket no 931_008 PRO);
(3) the entirety of which is hereby incorporated by reference in its entirety, and which is entitled " LIGHTING DEVICES, LIGHTING ASSEMBLIES, FIXTURES AND METHODS OF USING SAME & U.S. Patent Application No. 60 / 845,429 (inventor: Anthony Paul Vandeben; attorney docket no. 931_019 PRO);
(4), filed September 21, 2006, entitled " LIGHTING ASSEMBLIES, METHODS OF INSTALLING SAME, AND METHODS OF REPLACING LIGHTS ", the entirety of which is hereby incorporated by reference, U.S. Patent Application No. 60 / 846,222 (inventor: Anthony Paulandeven and Gerald H. Nesley; attorney docket no. 931_021 PRO);
(5) U.S. Patent Application No. 60 / 809,618, filed May 31, 2006, entitled "LIGHTING DEVICE AND METHOD OF LIGHTING," the entirety of which is hereby incorporated by reference, H. Negley, Anthony Paul Bandeen and Thomas G. Coleman; attorney docket no. 931_017 PRO); And,
(6) U.S. Patent Application Serial No. 60 / 622,301, filed November 13, 2006, entitled " LIGHTING DEVICE, ILLUMINATED ENCLOSURE AND LIGHTING METHODS ", the entirety of which is hereby incorporated by reference, 858,558 (inventor: Gerald H. Negly, attorney docket no. 931_026 PRO);
Equipment, other mounting structures, and complete lighting assemblies that may be used in the practice of the present invention are described, for example, below.
(5) U.S. Patent Application No. 60 / 809,618, filed May 31, 2006, entitled "LIGHTING DEVICE AND METHOD OF LIGHTING," the entirety of which is hereby incorporated by reference, H. Negley, Anthony Paul Bandeen and Thomas J. Kollemen, attorney docket no. 931_017 PRO);
(Inventor: Paul Kenneth, filed on November 14, 2006, entitled " LIGHT ENGINE ASSEMBLIES ", the entirety of which is hereby incorporated by reference in its entirety, Pickard) and Gary David Trott (attorney docket number 931_036 PRO);
(7) U.S. Patent Application No. 60 / 859,013, filed November 14, 2006, entitled " LIGHTING ASSEMBLIES AND COMPONENTS FOR LIGHTING ASSEMBLIES ", the entirety of which is hereby incorporated by reference (Inventors: Gary David Trotter and Paul Kenneth Picard; attorney docket number 931_037 PRO); And,
(8) Description of the invention, the entirety of which is hereby incorporated by reference, is incorporated herein by reference in its entirety as &lt; RTI ID = 0.0 &gt; "LIGHTING DEVICES AND / OR TRIM ELEMENTS IN LIGHTING & &Quot; DEVICE HOUSINGS "filed October 23, 2006 (inventors: Gary David Trotter and Paul Kenneth Picard; attorney docket number 931_038 PRO);
In addition, any desired circuit can be employed to supply energy to the lighting devices according to the present invention. Representative examples of circuits that may be used to practice the present invention are described below.
(1) U.S. Patent Application No. 60 / 809,959, filed June 1, 2006, entitled "Lighting Device With Cooling," the entirety of which is hereby incorporated by reference. Colleman, Gerald H. Negley and Anthony Paul Bandeen; attorney docket number 931_007 PRO);
(2) U.S. Patent Application No. 60 / 809,595, filed May 31, 2006, entitled "LIGHTING DEVICE AND METHOD OF LIGHTING," the entirety of which is hereby incorporated by reference, Attorney docket number 931_018 PRO); And,
(BOOST / FLYBACK POWER SUPPLY TOPOLOGY WITH LOW SIDE MOSFET CURRENT CONTROL WITH LOW SIDE MOSSET CURRENT CONTROL) ", which is hereby incorporated herein by reference in its entirety, U.S. Patent Application No. 60 / 844,325 (inventor: Peter Jay Myers; attorney docket number 931_020 PRO);
The devices according to the invention may further comprise one or more cooling devices with a long lifetime (e.g. a fan with a very long lifetime). Such long-lived cooling device (s) may include piezoelectrics or magnetorestrictive materials (e.g., MR, GMR, and / or HMR materials) that move air, such as a "Chinese fan" . &Lt; / RTI &gt; In cooling the devices according to the present invention, sufficient air is typically required to break the boundary layer in order to cause a temperature drop of 10 to 15 占 폚. Thus, in such a case, a strong "breeze" or high flow rate (high CFM) is not normally required (thus eliminating the need for a conventional fan).
The apparatus according to the present invention may further include a secondary optical system for further changing the projection properties of the emitted light. Such a secondary optical system is well known to those skilled in the art, and therefore need not be described here in detail, and any secondary optical system can be employed if necessary.
The apparatus according to the present invention may further include a sensor or a charging device, a camera or the like. For example, those skilled in the art will appreciate that devices that detect one or more occurrences (e.g., movement detectors that detect movement of an object or a human), and those that trigger light illumination or operate a security camera, etc. in response to such detection So that they can be easily obtained. As a representative example, an apparatus according to the present invention may include a lighting device and a moving sensor according to the present invention, and (1) when the moving sensor detects movement when the light is illuminated, a security camera is activated, (2) when the movement sensor senses movement, the light is illuminated to illuminate an area in the vicinity of the detected movement position, and the security camera is activated to move the detected movement position Or to record visual data around it.
Any two or more structural components of the lighting devices described herein may be integrated. Any of the structural components of the lighting devices described herein may be provided in two or more parts (which may be retained together if necessary).
At least one first lumipore, and
And at least one second lumiphar spaced apart from the first lumiphar,
Wherein the first lumiphar body is on a first side of a first plane, the second lumiphar body is on a second side of the first plane,
The second lumipheral is curved,
Wherein at least a portion of the first lumipheral is between the solid state light emitter and a second lumipheral.
The illumination device of claim 1, further comprising a first reflective element, wherein the solid state light emitter and the first lumphore are within the first reflective element.
3. The lighting apparatus according to claim 1 or 2, further comprising at least one package element, wherein the package element completely surrounds the at least one solid state light emitter and the at least one first lumipore.
4. The illumination device of claim 3, wherein the package element is transparent.
3. The lighting apparatus according to claim 1 or 2, wherein at least one air region is between the first lumipore and the second lumipheral.
3. The system of claim 1 or 2 further comprising a first reflective element and a second reflective element, wherein the solid state light emitter and the first lumphore are within the first reflective element, And a portion between the first luminescent and the second reflective element.
3. A lighting apparatus according to claim 1 or 2, wherein the surface area of the second lumipheral is at least twice the surface area of the first lumipheral.
(2) mixed light of light emitted from the at least one first lumphore after being converted by the at least one first lumipore as light emitted from the at least one solid state light emitter,
Having x, y chromatic coordinates within an area on a 1931 CIE chromaticity diagram surrounded by first, second, third and fourth line segments, said first line segment connecting a first point to a second point , The second line segment connects a second point to a third point, the third line segment connects a third point to a fourth point, and the fourth line segment connects a fourth point to a first point Wherein the first point has x, y coordinates of 0.45, 0.35, the second point has x, y coordinates of 0.35, 0.45, the third point has x, y coordinates of 0.12, 0.22, And the fourth point has an x, y coordinate of 0.20, 0.075.
3. The lighting apparatus according to claim 1 or 2, wherein the solid state light emitter emits light of a wavelength within a range of ultraviolet light or within a range up to 525 mm in a visible light range.
3. A lighting device according to claim 1 or 2, wherein the first lumphore comprises at least one binder in which at least one phosphor is dispersed, the binder being selected from the group consisting of epoxy, .
3. The lighting apparatus according to claim 1 or 2, wherein the second lumiphore further comprises at least one additive selected from the group consisting of a diffuser, a scatterer, and a tint.
3. The phosphor according to claim 1 or 2, wherein the first lumphore comprises a first phosphor material, the second lumiphar comprises a second phosphor material, the first phosphor material and the second phosphor material comprise The same, lighting device.
A method of manufacturing an illumination device,
Positioning at least one second lumophore relative to at least one first lumipore and at least one solid light emitter such that there is a portion of the first lumiphor between the solid state light emitter and the second lumiphar, The second lumipheral is spaced apart from the first lumipheral, the second lumipheral is curved, the first lumiphar body is on the first side of the first plane, Is on the second side of the lighting device.
14. The method of claim 13, wherein the step of locating the at least one second lumphore with respect to the at least one first lumipore and the at least one solid state light emitter further comprises positioning the second lumphore in a packaging Lt; RTI ID = 0.0 &gt; emitter. &Lt; / RTI &gt;
And providing electricity to the at least one solid state light emitter, wherein the solid state light emitter is in at least one first lumophore, the at least one first lumphore is spaced from at least one second lumiphore, Wherein the first lumiphar comprises at least one binder in which at least one phosphor is dispersed, the first lumphore at least partially between the solid state light emitter and the second lumipheral, Wherein the one lumipheral is on a first side of the first plane and the second lumipheral is on a second side of the first plane and the second lumpholar is curved.
Comprising at least a first lumipore and a second lumipore,
Wherein the second lumophore comprises at least one light emitting material and at least one binder, the second lumophore is spaced from the first lumophore, the first lumophore is in direct contact with the solid state light emitter, Wherein at least a portion of the first lumipheral is positioned between the solid state light emitter and the second lumiphar, the solid state light emitter is within the first lumiphore, And the second lumipheral is on the second side of the first plane, and the second lumiphar is curved.
Disposing a solid state light emitter, a first lumipore, and a second lumphore relative to each other such that the second lumphore is spaced from the first lumphore,
Wherein the solid state light emitter is in the first lumipheral, the first lumiphar body is on a first side of a first plane, the second lumiphar body is on a second side of the first plane, Wherein the lumped element is curved.
Providing electricity to at least one solid state light emitter,
Wherein the solid state light emitter is in a first lumipheral, the first lumipheral is spaced from a second lumipheral, the first lumiphar body is on a first side of a first plane, And the second lumphore is curved at a second side of the first plane.
Wherein the second lumophore comprises at least one light emitting material and at least one binder, the second lumphore is spaced from the first lumiphore, at least a portion of the first lumipheral is coupled to the solid state light emitter Wherein the first lumipheral is located on a first side of a first plane and the second lumiphar is on a second side of the first plane, Curved,
Wherein when the solid state light emitter is illuminated, at least some light emitted from the solid state light emitter is mixed with at least some light emitted from the second lumiphore.
A lighting device comprising at least a first lumipheral and a second lumiphar,
Wherein the first solid state light emitter is in the first lumipore,
Wherein the second lumphore is curved.
KR1020087020293A 2006-01-20 2007-01-19 Shifting spectral content in solid state light emitters by spatially separating lumiphor films KR101408622B1 (en)
US76045506P true 2006-01-20 2006-01-20
US60/760,455 2006-01-20
US76131006P true 2006-01-23 2006-01-23
US60/761,310 2006-01-23
US79437906P true 2006-04-24 2006-04-24
US60/794,379 2006-04-24
PCT/US2007/001382 WO2007084640A2 (en) 2006-01-20 2007-01-19 Shifting spectral content in solid state light emitters by spatially separating lumiphor films
KR20080092452A KR20080092452A (en) 2008-10-15
KR101408622B1 true KR101408622B1 (en) 2014-06-17
ID=38288248
KR1020087020293A KR101408622B1 (en) 2006-01-20 2007-01-19 Shifting spectral content in solid state light emitters by spatially separating lumiphor films
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TW (1) TWI491062B (en)
WO (1) WO2007084640A2 (en)
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