CN103378078A - Lighting device and method for generating white light - Google Patents

Abstract

The invention discloses a lighting device and a method for generating white light. The light emitted by the third light-emitting element is selectively mixed with the light emitted by the first light-emitting element and the second light-emitting element to form white light with chromaticity coordinate points approximately positioned on the black body curve, wherein the color of the light emitted by the third light-emitting element is determined by the linear relation between the light-emitting wavelengths of the first light-emitting element and the second light-emitting element and the corresponding coordinate points of the color temperature of the white light. The invention can prevent the occurrence of the condition that the color of the white light has obvious deviation.

Description

Translated fromChinese

照明装置及产生白光的方法Lighting device and method for producing white light

技术领域technical field

本发明涉及一种照明装置，且特别涉及一种具有可变色温的照明装置。The present invention relates to a lighting device, and in particular to a lighting device with variable color temperature.

背景技术Background technique

随着科技的进步，使用者对于照明的需求日益增加，对照明品质的要求也逐渐提高。近年来，发光二极管(LED)已渐渐取代传统的光源，主要是由于发光二极管与传统光源相较之下，具有发光效率佳、寿命长、可靠度高以及体积小等优点，故其应用的范围非常广泛。With the advancement of science and technology, users' demand for lighting is increasing day by day, and their requirements for lighting quality are also gradually increasing. In recent years, light-emitting diodes (LEDs) have gradually replaced traditional light sources. Compared with traditional light sources, light-emitting diodes have the advantages of good luminous efficiency, long life, high reliability, and small size, so their application range very broad.

以目前产生白光的照明装置而言，其可通过产生冷白光的元件与产生暖白光的元件来进行混光，使得照明装置能依据不同的设定而发出对应的白光。As for the current lighting device that generates white light, it can mix light through components that generate cool white light and components that generate warm white light, so that the lighting device can emit corresponding white light according to different settings.

然而，在上述作法中，通过混光而形成的白光，其在CIE色度图中的色度座标点通常无法确切地落于黑体曲线(Black Body Locus，BBL)上，使得依据上述作法所形成白光的颜色有明显偏差的情形发生。However, in the above method, the chromaticity coordinate points of the white light formed by mixing light in the CIE chromaticity diagram usually cannot exactly fall on the black body curve (Black Body Locus, BBL), so that the white light formed according to the above method A situation where the color of white light deviates significantly occurs.

其次，当照明装置依据不同的设定而发出对应的白光时，其中的发光元件必须受控制为全暗或全亮，因此上述混光的操作无法较有弹性地来进行，且通过混光形成的白光颜色也可能较不均匀。Secondly, when the lighting device emits corresponding white light according to different settings, the light-emitting elements in it must be controlled to be completely dark or fully bright, so the above-mentioned operation of mixing light cannot be performed more flexibly, and the light-emitting element formed by mixing light The color of the white light may also be less uniform.

再者，为了将产生冷白光的元件与产生暖白光的元件放置于同一个灯具内，以便进行混光的操作，因此上述作法必须于同一个灯具内配置相当多数量的LED，造成制作成本增加，进而导致照明装置本身的价格昂贵，更有甚者，照明装置本身的尺寸也无法有效地缩小。Furthermore, in order to place the components that generate cool white light and the components that generate warm white light in the same lamp for light mixing operation, the above method must configure a considerable number of LEDs in the same lamp, resulting in increased production costs. , which leads to the high price of the lighting device itself, what's more, the size of the lighting device itself cannot be effectively reduced.

发明内容Contents of the invention

本发明的目的在于提供一种照明装置及产生白光的方法，藉以防止白光的颜色有明显偏差的情形发生，并解决混光的操作无法有弹性进行的问题，还避免制作成本增加。The purpose of the present invention is to provide a lighting device and a method for generating white light, so as to prevent the occurrence of obvious color deviation of white light, solve the problem that the operation of light mixing cannot be performed flexibly, and avoid the increase of production cost.

本发明内容的一实施方式是关于一种照明装置，其包含第一发光元件、第二发光元件以及第三发光元件。第一发光元件用以发出具有第一波长的光，第一波长小于约480纳米。第二发光元件用以发出具有第二波长的光，第二波长大于约570纳米。第三发光元件用以发出具有第三波长的光，而与具有第一波长的光和具有第二波长的光选择性地混合，以形成在CIE色度图中色度座标点大致位于黑体曲线上的白光。其中，具有第三波长的光的颜色由具有第一波长的光与具有第一色温的白光在CIE色度图中相应座标点的线性关系以及具有第二波长的光与具有第二色温的白光在CIE色度图中相应座标点的线性关系所决定。An embodiment of the disclosure relates to a lighting device, which includes a first light-emitting element, a second light-emitting element, and a third light-emitting element. The first light-emitting element is used for emitting light with a first wavelength, and the first wavelength is less than about 480 nanometers. The second light emitting element is used for emitting light with a second wavelength, and the second wavelength is greater than about 570 nanometers. The third light-emitting element is used to emit light with a third wavelength, and to selectively mix with light with a first wavelength and light with a second wavelength, so as to form a chromaticity coordinate point in the CIE chromaticity diagram that is approximately located on the black body curve white light on. Wherein, the color of the light with the third wavelength is determined by the linear relationship between the light with the first wavelength and the white light with the first color temperature in the corresponding coordinate points in the CIE chromaticity diagram and the light with the second wavelength and the white light with the second color temperature It is determined by the linear relationship of the corresponding coordinate points in the CIE chromaticity diagram.

本发明内容的另一实施方式是关于一种照明装置，其包含第一发光元件、第二发光元件以及第三发光元件。第一发光元件用以发出具有第一波长的光，第一波长介于约440纳米和约460纳米之间。第二发光元件用以发出具有第二波长的光，第二波长介于约580纳米和约630纳米之间。第三发光元件用以发出具有第三波长的光，以与具有第一波长的光混合而形成在CIE色度图中色度座标点大致位于黑体曲线上色温范围内具有最高色温的白光，或与具有第二波长的光混合而形成色度座标点大致位于黑体曲线上色温范围内具有最低色温的白光。Another embodiment of the present invention relates to a lighting device, which includes a first light-emitting element, a second light-emitting element, and a third light-emitting element. The first light-emitting element is used for emitting light with a first wavelength between about 440 nanometers and about 460 nanometers. The second light emitting element is used for emitting light with a second wavelength, and the second wavelength is between about 580 nm and about 630 nm. The third light-emitting element is used to emit light with a third wavelength to be mixed with light with the first wavelength to form white light with the highest color temperature in the CIE chromaticity diagram, where the chromaticity coordinate point is approximately located within the color temperature range on the blackbody curve, or Mixed with light having the second wavelength to form white light with the lowest color temperature at a chromaticity coordinate point approximately within the color temperature range on the black body curve.

本发明内容的另一实施方式是关于一种产生白光的方法，其包含在CIE色度图中依据具有第一波长的光和大致位于黑体曲线上色温范围内具有最高色温的白光的座标点匹配出第一延伸线；在CIE色度图中依据具有第二波长的光和大致位于黑体曲线上色温范围内具有最低色温的白光的座标点匹配出第二延伸线；以及依据匹配结果提供具有第三波长的光，以供与具有第一波长的光和具有第二波长的光选择性地混合形成白光，其中具有第三波长的光在该CIE色度图中的座标点大致位于第一延伸线与第二延伸线相交处。Another embodiment of the content of the present invention relates to a method of producing white light, which includes matching in the CIE chromaticity diagram according to the coordinate points of the light having the first wavelength and the white light having the highest color temperature approximately within the color temperature range on the blackbody curve Draw the first extension line; in the CIE chromaticity diagram, match the second extension line according to the coordinate points of the light with the second wavelength and the white light with the lowest color temperature in the color temperature range on the black body curve; and provide the second extension line according to the matching result. Light of three wavelengths for selective mixing with light of a first wavelength and light of a second wavelength to form white light, wherein the coordinate point of the light of the third wavelength in the CIE chromaticity diagram is located approximately on the first extension line Intersects with the second extension line.

本发明的有益效果在于，根据本发明的技术内容，应用前述照明装置及产生白光的方法，不仅可通过改变三个发光元件相对应的发光强度比率，有效地让形成的白光确切地落于黑体曲线上，避免所形成白光的颜色有明显偏差的情形发生，而且混光的操作可以较有弹性地来进行，使混光形成的白光颜色相对均匀，还可减少所需发光元件的数量，使照明装置本身的尺寸得以缩减，同时减少制作成本，降低照明装置本身的价格。The beneficial effect of the present invention is that, according to the technical content of the present invention, the application of the above-mentioned lighting device and the method for generating white light can not only effectively make the formed white light fall on the black body exactly by changing the corresponding luminous intensity ratio of the three light-emitting elements On the curve, the situation that the color of the formed white light has obvious deviation is avoided, and the operation of light mixing can be carried out more flexibly, so that the color of the white light formed by the light mixing is relatively uniform, and the number of required light-emitting elements can also be reduced, so that The size of the lighting device itself can be reduced, and at the same time, the production cost and the price of the lighting device itself can be reduced.

本发明内容旨在提供本揭示内容的简化摘要，以使阅读者对本揭示内容具备基本的理解。此发明内容并非本揭示内容的完整概述，且其用意并非在指出本发明实施例的重要/关键元件或界定本发明的范围。This Summary is intended to provide a simplified summary of the disclosure in order to provide the reader with a basic understanding of the disclosure. This summary is not an extensive overview of the disclosure and it is not intended to identify key/critical elements of the embodiments of the invention or to delineate the scope of the invention.

附图说明Description of drawings

图1为依照本发明实施例绘示一种照明装置的示意图。FIG. 1 is a schematic diagram illustrating an illuminating device according to an embodiment of the present invention.

图2为依照本发明实施例绘示一种CIE色度图及其中色度座标点匹配的情形。FIG. 2 shows a CIE chromaticity diagram and a situation where chromaticity coordinate points match according to an embodiment of the present invention.

图3为依照本发明实施例绘示一种波长及其相对强度的示意图。FIG. 3 is a schematic diagram illustrating a wavelength and its relative intensity according to an embodiment of the present invention.

图4为依照本发明另一实施例绘示一种照明装置的示意图。FIG. 4 is a schematic diagram illustrating a lighting device according to another embodiment of the present invention.

图5A至图5F为依照本发明实施例绘示发光元件的发光强度比不同的情形下白光色温的变化示意图。5A to FIG. 5F are schematic diagrams showing the variation of the color temperature of white light under different luminous intensity ratios of the light-emitting elements according to an embodiment of the present invention.

图6为依照本发明实施例绘示一种产生白光的方法的流程图。FIG. 6 is a flowchart illustrating a method for generating white light according to an embodiment of the present invention.

其中，附图标记说明如下：Wherein, the reference signs are explained as follows:

100、400：照明装置100, 400: Lighting device

110、410：第一发光元件110, 410: the first light emitting element

120、420：第二发光元件120, 420: the second light emitting element

130、430：第三发光元件130, 430: the third light emitting element

140、440：载体140, 440: carrier

200：黑体曲线200: Black body curve

450：控制元件450: Control element

S602、S604、S606：步骤S602, S604, S606: steps

具体实施方式Detailed ways

下文举实施例配合附图作详细说明，但所提供的实施例并非用以限制本发明所涵盖的范围，而结构运作的描述非用以限制其执行的顺序，任何由元件重新组合的结构，所产生具有等同功效的装置，皆为本发明所涵盖的范围。此外，附图仅以说明为目的，并未依照原尺寸作图。The following examples are described in detail with reference to the accompanying drawings, but the provided examples are not intended to limit the scope of the present invention, and the description of the structure and operation is not intended to limit the order of its execution, any structure recombined by components, The resulting devices with equivalent effects are within the scope of the present invention. In addition, the drawings are for illustration purposes only and are not drawn to original scale.

关于本文中所使用的“约”、“大约”或“大致”一般通常指数值的误差或范围于百分之二十以内，较好地是于百分之十以内，而更佳地则是于百分之五以内。文中若无明确说明，其所提及的数值皆视作为近似值，即如“约”、“大约”或“大致”所表示的误差或范围。As used herein, "about", "approximately" or "approximately" generally means that the error or range of the value is within 20%, preferably within 10%, and more preferably within five percent. If there is no explicit statement in the text, the numerical values mentioned are regarded as approximate values, that is, the error or range indicated by "about", "approximately" or "approximately".

另外，关于本文中所使用的“耦接”或“连接”，均可指二或多个元件相互直接作实体或电性接触，或是相互间接作实体或电性接触，而“耦接”还可指二或多个元件相互操作或动作。In addition, regarding the "coupling" or "connection" used in this article, both can refer to two or more elements that are in direct physical or electrical contact with each other, or indirect physical or electrical contact with each other, and "coupled" It can also mean that two or more elements interoperate or act.

图1为依照本发明实施例绘示一种照明装置的示意图。照明装置100包含第一发光元件110、第二发光元件120、第三发光元件130以及载体140，其中载体140承载第一发光元件110、第二发光元件120以及第三发光元件130，且第一发光元件110、第二发光元件120与第三发光元件130各自所发出的光，经混合后形成白光。需注意的是，图1所示的结构仅为方便说明而概略示意而已，并非用以限定本发明。FIG. 1 is a schematic diagram illustrating an illuminating device according to an embodiment of the present invention. Thelighting device 100 includes a firstlight emitting element 110, a secondlight emitting element 120, a thirdlight emitting element 130 and acarrier 140, wherein thecarrier 140 carries the firstlight emitting element 110, the secondlight emitting element 120 and the thirdlight emitting element 130, and the first The lights emitted by thelight emitting element 110 , the secondlight emitting element 120 and the thirdlight emitting element 130 are mixed to form white light. It should be noted that the structure shown in FIG. 1 is only schematically illustrated for convenience of description, and is not intended to limit the present invention.

第一发光元件110用以发出具有第一波长的光，其中第一波长小于约480纳米(nm)。第二发光元件120用以发出具有第二波长的光，其中第二波长大于约570纳米(nm)。第三发光元件130用以发出具有第三波长的光，而与具有第一波长的光和具有第二波长的光选择性地混合，以形成在CIE色度图(如：CIE 1931色度图)中色度座标点大致位于黑体曲线(Black Body Locus，BBL)上的白光。上述具有第三波长的光的颜色，主要是由具有第一波长的光与具有第一色温的白光在CIE色度图中相应座标点的线性关系，以及具有第二波长的光与具有第二色温的白光在CIE色度图中相应座标点的线性关系，此两者所决定。The firstlight emitting element 110 is used for emitting light with a first wavelength, wherein the first wavelength is less than about 480 nanometers (nm). The secondlight emitting element 120 is used for emitting light with a second wavelength, wherein the second wavelength is greater than about 570 nanometers (nm). The third light-emitting element 130 is used to emit light with a third wavelength, and selectively mix with light with a first wavelength and light with a second wavelength to form a CIE chromaticity diagram (such as: CIE 1931 chromaticity diagram) ) in which the chromaticity coordinate point is roughly located on the black body curve (Black Body Locus, BBL) white light. The color of the above-mentioned light with the third wavelength is mainly composed of the linear relationship between the light with the first wavelength and the white light with the first color temperature in the CIE chromaticity diagram, and the relationship between the light with the second wavelength and the white light with the second color temperature. The linear relationship between the color temperature of white light and the corresponding coordinate points in the CIE chromaticity diagram is determined by the two.

上述及下列所称色度座标点大致位于黑体曲线上的白光，主要是指白光的相应色度座标点确实位于黑体曲线上，或者其色度座标点与黑体曲线上各座标点的偏差在误差范围百分之十以内，或更佳地于百分之五以内。The white light whose chromaticity coordinate points are roughly located on the blackbody curve mentioned above and below mainly refers to that the corresponding chromaticity coordinate points of the white light are indeed located on the blackbody curve, or the deviation between the chromaticity coordinate points and the coordinate points on the blackbody curve is within the error range within ten percent, or more preferably within five percent.

在一实施例中，第一发光元件110和第二发光元件120可由发光晶粒、发光二极管(LED)芯片或其它发光元件(或发光源)来实现，而第三发光元件130则可由荧光粉覆盖发光晶粒或LED芯片的型式来实现。In one embodiment, the first light-emittingelement 110 and the second light-emittingelement 120 can be realized by light-emitting dies, light-emitting diode (LED) chips or other light-emitting elements (or light-emitting sources), while the third light-emittingelement 130 can be realized by phosphor powder It can be realized by covering the luminescent grain or LED chip.

需注意的是，上述发光元件所发出的光并不限于是以何种形式产生；换言之，上述发光元件可以是单纯的发光体或是搭配荧光材料的发光体，任何本领域的技术人员，在不脱离本发明的精神和范围内，当可设计不同的发光源或是搭配荧光材料，来实现上述发光元件及其发光后混合产生白光的效果。It should be noted that the light emitted by the above-mentioned light-emitting elements is not limited in what form; Without departing from the spirit and scope of the present invention, different light sources can be designed or matched with fluorescent materials to achieve the effect of the above-mentioned light-emitting elements and their mixing to generate white light after emitting light.

下列将以实施例来说明上述由CIE色度图中相应座标点的线性关系来决定具有第三波长的光颜色的方式。图2为依照本发明实施例绘示一种CIE色度图及其中色度座标点匹配的情形。同时参照图1和图2，具有第一波长的光(如蓝光)在色度图中位于座标点B，具有第二波长的光(如红光)在色度图中位于座标点R，具有第一色温的白光以及具有第二色温的白光在色度图中分别位于座标点W1、W2，且座标点W1、W2大致位于黑体曲线200上。其次，座标点B和座标点W1经匹配而形成第一延伸线L1，座标点R和座标点W2经匹配而形成第二延伸线L2，而具有第三波长的光(如包含蓝光波长的特定荧光)在色度图中则大致位于第一延伸线L1与第二延伸线L2的相交处(即座标点P)。因此，第三发光元件130所发出具有第三波长的光(位于座标点P)，便可与第一发光元件110所发出具有第一波长的光(位于座标点B)和第二发光元件120所发出具有第二波长的光(位于座标点R)选择性地混合形成黑体曲线200上的白光。如此一来，便可有效地让形成的白光确切地落于黑体曲线200上，避免所形成白光的颜色有明显偏差的情形发生，而且混光的操作可以较有弹性地来进行，使混光形成的白光颜色相对均匀。The following example will be used to illustrate the method of determining the color of the light with the third wavelength based on the linear relationship of the corresponding coordinate points in the CIE chromaticity diagram. FIG. 2 shows a CIE chromaticity diagram and a situation where chromaticity coordinate points match according to an embodiment of the present invention. Referring to Fig. 1 and Fig. 2 simultaneously, the light (such as blue light) with the first wavelength is located at coordinate point B in the chromaticity diagram, and the light with the second wavelength (such as red light) is located at coordinate point R in the chromaticity diagram, with The white light with the first color temperature and the white light with the second color temperature are respectively located at coordinate points W1 and W2 in the chromaticity diagram, and the coordinate points W1 and W2 are approximately located on theblackbody curve 200 . Secondly, the coordinate point B and the coordinate point W1 are matched to form the first extension line L1, the coordinate point R and the coordinate point W2 are matched to form the second extension line L2, and the light with the third wavelength (such as a specific wavelength including blue light) Fluorescence) in the chromaticity diagram is roughly located at the intersection of the first extension line L1 and the second extension line L2 (that is, the coordinate point P). Therefore, the light with the third wavelength (located at the coordinate point P) emitted by the third light-emittingelement 130 can be compared with the light with the first wavelength (located at the coordinate point B) emitted by the first light-emittingelement 110 and the second light-emittingelement 120. The emitted light having the second wavelength (at coordinate point R) is selectively mixed to form white light on theblack body curve 200 . In this way, the formed white light can be effectively made to fall exactly on theblackbody curve 200, avoiding the occurrence of obvious deviations in the color of the formed white light, and the light mixing operation can be performed more flexibly, so that the light mixing The resulting white light is relatively uniform in color.

在一实施例中，具有第三波长的光(位于座标点P)可与具有第一波长的光(位于座标点B)混合而形成具有第一色温的白光(位于座标点W1)，而具有第三波长的光(位于座标点P)可与具有第二波长的光(位于座标点R)混合而形成具有第二色温的白光(位于座标点W2)。In one embodiment, the light with the third wavelength (located at the coordinate point P) can be mixed with the light with the first wavelength (located at the coordinate point B) to form white light with the first color temperature (located at the coordinate point W1), and has The light of the third wavelength (located at the coordinate point P) can be mixed with the light of the second wavelength (located at the coordinate point R) to form white light with a second color temperature (located at the coordinate point W2).

此外，上述具有第三波长的光(位于座标点P)在CIE色度图中的座标点不位于黑体曲线200上。如此一来，便可通过调整并混合具有第一波长的光、具有第二波长的光和具有第三波长的光，来形成色度图中大致位于黑体曲线上的白光。In addition, the coordinate point of the light having the third wavelength (located at the coordinate point P) in the CIE chromaticity diagram is not located on theblack body curve 200 . In this way, by adjusting and mixing the light having the first wavelength, the light having the second wavelength and the light having the third wavelength, white light which is approximately on the blackbody curve in the chromaticity diagram can be formed.

在另一实施例中，具有第一色温的白光(位于座标点W1)可以是一色温范围内具有最高色温(如5000K)的冷白光，具有第二色温的白光(位于座标点W2)可以是色温范围内具有最低色温(如2700K)的暖白光。另外，具有第三波长的光(位于座标点P)可与具有第一波长的光或是蓝光混合而形成具有最高色温的冷白光，具有第三波长的光(位于座标点P)可与具有第二波长的光或是红光混合而形成具有最低色温的暖白光。In another embodiment, the white light with the first color temperature (located at the coordinate point W1) can be cool white light with the highest color temperature (such as 5000K) in a color temperature range, and the white light with the second color temperature (located at the coordinate point W2) can be Warm white light with the lowest color temperature (such as 2700K) in the color temperature range. In addition, the light with the third wavelength (located at the coordinate point P) can be mixed with the light with the first wavelength or blue light to form cool white light with the highest color temperature, and the light with the third wavelength (located at the coordinate point P) can be mixed with the light with the Light of the second wavelength or red light mixes to form warm white light with the lowest color temperature.

图3为依照本发明实施例绘示一种波长及其相对强度的示意图。如图1和图3所示，第一发光元件110所发出的光可以是落于蓝光波段的光，其第一波长可小于约480纳米，且较佳地可介于约440纳米和约460纳米间的波段范围内；第二发光元件120所发出的光可以是落于红光波段的光，其第二波长可大于约570纳米，且较佳地可介于约580纳米和约630纳米间的波段范围内；第三发光元件130所发出的光则可包含具有第一波长的光以及介于约480纳米至约570纳米波段范围内的光。FIG. 3 is a schematic diagram illustrating a wavelength and its relative intensity according to an embodiment of the present invention. As shown in Figures 1 and 3, the light emitted by the first light-emittingelement 110 can be light in the blue light band, and its first wavelength can be less than about 480 nanometers, and preferably can be between about 440 nanometers and about 460 nanometers The light emitted by the second light-emittingelement 120 can be in the red light band, and its second wavelength can be greater than about 570 nanometers, and preferably between about 580 nanometers and about 630 nanometers within the wavelength range; the light emitted by the thirdlight emitting element 130 may include light with the first wavelength and light within a wavelength range from about 480 nanometers to about 570 nanometers.

另一方面，当选用的第一波长和第二波长改变时，具有第一波长的光和具有第二波长的光的相应座标点也会改变，使得具有第三波长的光的相应座标点跟着改变。在一实施例中，当第一波长介于约440纳米和约460纳米之间，且第二波长介于约580纳米和约630纳米之间时，具有第三波长的光的相应座标点(X，Y)的X值可介于约0.336和约0.421之间，Y值可介于约0.3915和约0.4911之间。On the other hand, when the selected first wavelength and the second wavelength are changed, the corresponding coordinate points of the light having the first wavelength and the light having the second wavelength are also changed, so that the corresponding coordinate points of the light having the third wavelength follow Change. In one embodiment, when the first wavelength is between about 440 nm and about 460 nm, and the second wavelength is between about 580 nm and about 630 nm, the corresponding coordinate points (X, Y) can have an X value between about 0.336 and about 0.421, and a Y value between about 0.3915 and about 0.4911.

在另一实施例中，第一波长可介于约440纳米和约460纳米之间，第二波长可介于约580纳米和约630纳米之间，而具有第三波长的光的相应座标点可位于第一座标点(0.3360，0.4004)、第二座标点(0.3790，0.4911)、第三座标点(0.3770，0.3915)以及第四座标点(0.4210，0.4653)所形成的区域范围内。In another embodiment, the first wavelength can be between about 440 nanometers and about 460 nanometers, the second wavelength can be between about 580 nanometers and about 630 nanometers, and the corresponding coordinate point of the light having the third wavelength can be located at Within the area formed by the first coordinate point (0.3360, 0.4004), the second coordinate point (0.3790, 0.4911), the third coordinate point (0.3770, 0.3915) and the fourth coordinate point (0.4210, 0.4653).

图4为依照本发明另一实施例绘示一种照明装置的示意图。照明装置400包含第一发光元件410、第二发光元件420、第三发光元件430、载体440以及控制元件450，其中载体440承载第一发光元件410、第二发光元件420以及第三发光元件430，第一发光元件410、第二发光元件420与第三发光元件430依据上述图1至图3所示实施方式发出对应的光，经混合后形成所需白光。控制元件450电性连接第一发光元件410、第二发光元件420及第三发光元件430，用以控制第一发光元件410、第二发光元件420以及第三发光元件430，以改变第一发光元件410、第二发光元件420及第三发光元件430的发光强度，使得其所发出的光混合后能形成大致位于黑体曲线上的白光。同样需注意的是，图4所示的结构仅为方便说明而概略示意而已，并非用以限定本发明。FIG. 4 is a schematic diagram illustrating a lighting device according to another embodiment of the present invention. Thelighting device 400 includes a firstlight emitting element 410, a secondlight emitting element 420, a thirdlight emitting element 430, acarrier 440 and acontrol element 450, wherein thecarrier 440 carries the firstlight emitting element 410, the secondlight emitting element 420 and the thirdlight emitting element 430 The first light-emittingelement 410 , the second light-emittingelement 420 and the third light-emittingelement 430 emit corresponding lights according to the above embodiments shown in FIGS. 1 to 3 , and form the desired white light after mixing. Thecontrol element 450 is electrically connected to the firstlight emitting element 410, the secondlight emitting element 420, and the thirdlight emitting element 430, and is used to control the firstlight emitting element 410, the secondlight emitting element 420, and the thirdlight emitting element 430 to change the first light emitting element. The luminous intensity of theelement 410 , the secondlight emitting element 420 and the thirdlight emitting element 430 is such that the light emitted by them can be mixed to form white light approximately on the blackbody curve. It should also be noted that the structure shown in FIG. 4 is only schematically illustrated for convenience of description, and is not intended to limit the present invention.

实作上，控制元件450可以是三相输出的控制电路，用以分别控制各发光元件，而在型态上也可以单一控制电路、控制芯片或其它可行的驱动控制电路来实现，在此并不对其加以限制。In practice, thecontrol element 450 can be a control circuit with three-phase output to control each light-emitting element separately, and it can also be realized in a single control circuit, a control chip or other feasible drive control circuits in terms of type, and it is not used here. It is not restricted.

在一实施例中，于控制元件450控制各发光元件的情形下，第一发光元件410相对第三发光元件430的发光强度比率可介于0和约0.8之间，而第二发光元件420相对第三发光元件430的发光强度比率可介于0和约0.8之间，藉此使得第一发光元件410、第二发光元件420以及第三发光元件430所发出的光，能经适当地混合后形成大致位于黑体曲线上的白光。In one embodiment, under the condition that thecontrol element 450 controls each light emitting element, the luminous intensity ratio of the firstlight emitting element 410 relative to the thirdlight emitting element 430 may be between 0 and about 0.8, and the ratio of the light emitting intensity of the secondlight emitting element 420 relative to the thirdlight emitting element 430 may be between 0 and about 0.8. The luminous intensity ratio of the three light-emittingelements 430 can be between 0 and about 0.8, so that the light emitted by the first light-emittingelement 410, the second light-emittingelement 420, and the third light-emittingelement 430 can be properly mixed to form approximately White light lying on the black body curve.

另一方面，上述控制元件450也可进一步控制第一发光元件410、第二发光元件420与第三发光元件430三者间相对应的发光强度比率，藉以改变形成的白光在黑体曲线上的相对应座标位置，以调整照明装置400所发出的白光的色温。On the other hand, the above-mentionedcontrol element 450 can also further control the corresponding luminous intensity ratio among the first light-emittingelement 410, the second light-emittingelement 420, and the third light-emittingelement 430, so as to change the phase of the formed white light on the black-body curve. The corresponding coordinate positions are used to adjust the color temperature of the white light emitted by thelighting device 400 .

图5A至图5F为依照本发明实施例绘示发光元件的发光强度比不同的情形下白光色温的变化示意图。如图4和图5A所示，当第一波长约450纳米，第二波长约615纳米，且具有第一波长的光、具有第二波长的光与具有第三波长的光混合形成的白光的色温约5000K(位于座标点WA)时，第一发光元件410、第二发光元件420及第三发光元件430的发光强度比大约为0.18∶0∶1，亦即此时可近乎仅通过第一发光元件410与第三发光元件430所发出的光混合形成所需的冷白光。5A to FIG. 5F are schematic diagrams showing the variation of the color temperature of white light under different luminous intensity ratios of the light-emitting elements according to an embodiment of the present invention. As shown in Figure 4 and Figure 5A, when the first wavelength is about 450 nanometers, the second wavelength is about 615 nanometers, and the light with the first wavelength, the light with the second wavelength and the light with the third wavelength are mixed to form white light When the color temperature is about 5000K (located at the coordinate point WA), the luminous intensity ratio of the first light-emittingelement 410, the second light-emittingelement 420, and the third light-emittingelement 430 is about 0.18:0:1. The light emitted by thelight emitting element 410 and the thirdlight emitting element 430 are mixed to form the required cool white light.

如图4和图5B所示，当第一波长约450纳米，第二波长约615纳米，且具有第一波长的光、具有第二波长的光与具有第三波长的光混合形成的白光的色温约4500K(位于座标点WB)时，第一发光元件410、第二发光元件420及第三发光元件430的发光强度比大约为0.14∶0.04∶1。As shown in Figure 4 and Figure 5B, when the first wavelength is about 450 nanometers, the second wavelength is about 615 nanometers, and the light with the first wavelength, the light with the second wavelength and the light with the third wavelength are mixed to form white light When the color temperature is about 4500K (at the coordinate point WB), the luminous intensity ratio of the firstlight emitting element 410 , the secondlight emitting element 420 and the thirdlight emitting element 430 is about 0.14:0.04:1.

如图4和图5C所示，当第一波长约450纳米，第二波长约615纳米，且具有第一波长的光、具有第二波长的光与具有第三波长的光混合形成的白光的色温约4000K(位于座标点WC)时，第一发光元件410、第二发光元件420及第三发光元件430的发光强度比大约为0.10∶0.08∶1。As shown in Figure 4 and Figure 5C, when the first wavelength is about 450 nanometers, the second wavelength is about 615 nanometers, and the light with the first wavelength, the light with the second wavelength and the light with the third wavelength are mixed to form white light When the color temperature is about 4000K (at the coordinate point WC), the luminous intensity ratio of the firstlight emitting element 410 , the secondlight emitting element 420 and the thirdlight emitting element 430 is about 0.10:0.08:1.

如图4和图5D所示，当第一波长约450纳米，第二波长约615纳米，且具有第一波长的光、具有第二波长的光与具有第三波长的光混合形成的白光的色温约3500K(位于座标点WD)时，第一发光元件410、第二发光元件420及第三发光元件430的发光强度比大约为0.07∶0.14∶1。As shown in Figure 4 and Figure 5D, when the first wavelength is about 450 nanometers, the second wavelength is about 615 nanometers, and the light with the first wavelength, the light with the second wavelength and the light with the third wavelength are mixed to form white light When the color temperature is about 3500K (at the coordinate point WD), the luminous intensity ratio of the firstlight emitting element 410 , the secondlight emitting element 420 and the thirdlight emitting element 430 is about 0.07:0.14:1.

如图4和图5E所示，当第一波长约450纳米，第二波长约615纳米，且具有第一波长的光、具有第二波长的光与具有第三波长的光混合形成的白光的色温约3000K(位于座标点WE)时，第一发光元件410、第二发光元件420及第三发光元件430的发光强度比大约为0.03∶0.23∶1。As shown in Figure 4 and Figure 5E, when the first wavelength is about 450 nanometers, the second wavelength is about 615 nanometers, and the light with the first wavelength, the light with the second wavelength and the light with the third wavelength are mixed to form white light When the color temperature is about 3000K (at the coordinate point WE), the luminous intensity ratio of the first light-emittingelement 410 , the second light-emittingelement 420 and the third light-emittingelement 430 is about 0.03:0.23:1.

如图4和图5F所示，当第一波长约450纳米，第二波长约615纳米，且具有第一波长的光、具有第二波长的光与具有第三波长的光混合形成的白光的色温约2700K(位于座标点WF)时，第一发光元件410、第二发光元件420及第三发光元件430的发光强度比大约为0.01∶0.31∶1，亦即此时可近乎仅通过第二发光元件420与第三发光元件430所发出的光混合形成所需的暖白光。As shown in Figure 4 and Figure 5F, when the first wavelength is about 450 nanometers, the second wavelength is about 615 nanometers, and the light with the first wavelength, the light with the second wavelength and the light with the third wavelength are mixed to form white light When the color temperature is about 2700K (located at the coordinate point WF), the luminous intensity ratio of the first light-emittingelement 410, the second light-emittingelement 420, and the third light-emittingelement 430 is about 0.01:0.31:1. The light emitted by thelight emitting element 420 and the thirdlight emitting element 430 are mixed to form the required warm white light.

由上可知，通过改变第一发光元件410、第二发光元件420与第三发光元件430三者间相对应的发光强度比率，便可有效地让形成的白光确切地落于黑体曲线上，避免所形成白光的颜色有明显偏差的情形发生，而且混光的操作可以较有弹性地来进行，使混光形成的白光颜色相对均匀，更可减少所需发光元件的数量，使照明装置本身的尺寸得以缩减，同时减少制作成本，降低照明装置本身的价格。It can be seen from the above that by changing the ratio of the corresponding luminous intensity among the first light-emittingelement 410, the second light-emittingelement 420 and the third light-emittingelement 430, the formed white light can be effectively made to fall exactly on the black-body curve, avoiding The color of the formed white light has obvious deviation, and the light mixing operation can be carried out more flexibly, so that the color of the white light formed by the mixed light is relatively uniform, and the number of required light-emitting elements can be reduced, so that the lighting device itself The size is reduced, and at the same time the production cost is reduced, reducing the price of the lighting device itself.

需注意的是，上述实施例虽仅揭示三个发光元件以及对三个发光元件的发光强度进行调整，然其仅是例示以方便说明而已，并非用以限定本发明，换言之，任何本领域的技术人员均可依据实际需求，适当地选用一个或多个第一发光元件、第二发光元件或第三发光元件，藉其发光混合形成所需的白光。It should be noted that although the above-mentioned embodiment only discloses three light-emitting elements and the adjustment of the luminous intensity of the three light-emitting elements, it is only an example for convenience of description, and is not intended to limit the present invention. In other words, any person in the field According to actual needs, technicians can properly select one or more first light-emitting elements, second light-emitting elements or third light-emitting elements, and form the desired white light by emitting light and mixing.

此外，前述发光元件于制作时，可通过一般公知的基板(如：ZnSe、Al₂O₃、ZnS、GaP基板)、发光层(如：ZnSe、GaN、ZnS、GaP发光层)或荧光材料(如：YAG、SrGa₂S₄、SrS材料)，并利用有机金属化学气相外延(MOCVD)、液相外延(LPE)或汽相外延(VPE)等方法来完成，但制作材料及方式并不以上述为限。In addition, the above-mentioned light-emitting element can be fabricated through generally known substrates (such as: ZnSe, Al₂ O₃ , ZnS, GaP substrates), light-emitting layers (such as: ZnSe, GaN, ZnS, GaP light-emitting layers) or fluorescent materials ( Such as: YAG, SrGa₂ S₄ , SrS materials), and use metalorganic chemical vapor phase epitaxy (MOCVD), liquid phase epitaxy (LPE) or vapor phase epitaxy (VPE) to complete, but the production materials and methods are not based on The above is limited.

图6为依照本发明实施例绘示一种产生白光的方法的流程图。同时参照图2和图6，首先在CIE色度图中依据具有第一波长的光和大致位于黑体曲线200上色温范围内具有最高色温的白光的座标点(如座标点B和W1)匹配出第一延伸线L1(步骤S602)。其次，在CIE色度图中依据具有第二波长的光和大致位于黑体曲线200上色温范围内具有最低色温的白光的座标点(如座标点R和W2)匹配出第二延伸线L2(步骤S604)。接着，依据上述匹配结果提供具有第三波长的光(步骤S606)，以供与具有第一波长的光和具有第二波长的光选择性地混合形成色度座标大致位于黑体曲线200上的白光，其中具有第三波长的光在CIE色度图中的座标点大致位于第一延伸线L1与第二延伸线L2相交处(如座标点P)。在一实施例中，上述第一波长可介于约440纳米和约460纳米之间，第二波长可介于约580纳米和约630纳米之间。FIG. 6 is a flowchart illustrating a method for generating white light according to an embodiment of the present invention. Referring to Fig. 2 and Fig. 6 at the same time, first in the CIE chromaticity diagram, the coordinate points (such as coordinate points B and W1) of the light having the first wavelength and the white light having the highest color temperature within the color temperature range on theblackbody curve 200 are matched. The first extension line L1 (step S602). Secondly, in the CIE chromaticity diagram, the second extension line L2 is matched according to the coordinate points (such as coordinate points R and W2) of the light with the second wavelength and the white light with the lowest color temperature in the color temperature range on the blackbody curve 200 (step S604). Next, according to the above-mentioned matching result, light with a third wavelength is provided (step S606), for selectively mixing with light with the first wavelength and light with the second wavelength to form white light whose chromaticity coordinates are roughly located on theblackbody curve 200 , wherein the coordinate point of the light having the third wavelength in the CIE chromaticity diagram is approximately located at the intersection of the first extension line L1 and the second extension line L2 (such as coordinate point P). In one embodiment, the above-mentioned first wavelength may be between about 440 nm and about 460 nm, and the second wavelength may be between about 580 nm and about 630 nm.

需注意的是，上述所提及的步骤，除特别叙明其顺序者外，均可依实际需要调整其前后顺序，甚至可同时或部分同时执行，图6所示的流程图仅为一实施例，并非用以限定本发明；换言之，步骤S602和步骤S604可同时或以与上述相反的次序进行，在此不以图6所示为限。It should be noted that the steps mentioned above can be adjusted according to actual needs, and can even be executed at the same time or partially at the same time, unless the order is specifically stated. The flow chart shown in Figure 6 is only an implementation For example, it is not intended to limit the present invention; in other words, step S602 and step S604 can be performed at the same time or in the reverse order to the above, which is not limited to what is shown in FIG. 6 .

在一实施例中，上述产生白光的方法可还包含调整并混合具有第一波长的光(如对应座标点B)、具有第二波长的光(如对应座标点R)和具有第三波长的光(如对应座标点P)，藉以形成色度座标大致位于黑体曲线200上的白光，其中具有第一波长的光相对具有第三波长的光的强度比率可介于0和约0.8之间，具有第二波长的光相对具有第三波长的光的强度比率可介于0和约0.8之间，藉此使得具有第一波长的光、具有第二波长的光与具有第三波长的光，能经适当地混合后形成大致位于黑体曲线上的白光。In one embodiment, the above-mentioned method for generating white light may further include adjusting and mixing light having a first wavelength (such as corresponding to coordinate point B), light having a second wavelength (such as corresponding to coordinate point R) and light having a third wavelength light (such as corresponding to the coordinate point P), thereby forming white light whose chromaticity coordinates lie approximately on theblack body curve 200, wherein the ratio of the intensity of the light having the first wavelength to the light having the third wavelength may be between 0 and about 0.8, The ratio of the intensity of the light having the second wavelength to the light having the third wavelength may be between 0 and about 0.8, whereby the light having the first wavelength, the light having the second wavelength, and the light having the third wavelength, can Properly mixed to form white light approximately on the black body curve.

在另一实施例中，上述产生白光的方法可还包含混合具有第一波长的光(如对应座标点B)和具有第三波长的光(如对应座标点P)，以形成大致位于黑体曲线上具有最高色温的白光(如对应座标点W1)。其次，上述产生白光的方法可还包含混合具有第二波长的光(如对应座标点R)和具有第三波长的光(如对应座标点P)，以形成大致位于黑体曲线上具有最低色温的白光(如对应座标点W2)。In another embodiment, the above-mentioned method for generating white light may further include mixing light having a first wavelength (such as corresponding to coordinate point B) and light having a third wavelength (such as corresponding to coordinate point P) to form a curve approximately located on the black body curve White light with the highest color temperature on the top (such as corresponding to the coordinate point W1). Secondly, the above-mentioned method for producing white light may further include mixing the light having the second wavelength (such as corresponding to the coordinate point R) and the light having the third wavelength (such as corresponding to the coordinate point P) to form a light having the lowest color temperature approximately on the blackbody curve. White light (such as corresponding to coordinate point W2).

在次一实施例中，具有第三波长的光的相应座标点(X，Y)的X值可介于约0.336和约0.421之间，Y值可介于约0.3915和约0.4911之间。另，具有第三波长的光的相应座标点(如对应座标点P)亦可位于第一座标点(0.3360，0.4004)、第二座标点(0.3790，0.4911)、第三座标点(0.3770，0.3915)以及第四座标点(0.4210，0.4653)所形成的区域范围内。In a second embodiment, the X value of the corresponding coordinate point (X, Y) of the light having the third wavelength may be between about 0.336 and about 0.421, and the Y value may be between about 0.3915 and about 0.4911. In addition, the corresponding coordinate points (such as the corresponding coordinate point P) of the light with the third wavelength can also be located at the first coordinate point (0.3360, 0.4004), the second coordinate point (0.3790, 0.4911), the third coordinate point (0.3770, 0.3915 ) and the area formed by the fourth coordinate point (0.4210, 0.4653).

由上述本发明的实施例可知，应用前述照明装置及产生白光的方法，不仅可通过改变三个发光元件相对应的发光强度比率，有效地让形成的白光确切地落于黑体曲线上，避免所形成白光的颜色有明显偏差的情形发生，而且混光的操作可以较有弹性地来进行，使混光形成的白光颜色相对均匀，还可减少所需发光元件的数量，使照明装置本身的尺寸得以缩减，同时减少制作成本，降低照明装置本身的价格。From the above-mentioned embodiments of the present invention, it can be known that by using the above-mentioned lighting device and the method for generating white light, not only can the corresponding luminous intensity ratios of the three light-emitting elements be changed, but the formed white light can be effectively made to fall exactly on the black-body curve, avoiding all kinds of problems. The color of the formed white light has obvious deviations, and the light mixing operation can be carried out more flexibly, so that the color of the white light formed by the mixed light is relatively uniform, and the number of required light-emitting elements can also be reduced, so that the size of the lighting device itself can be reduced. It can be reduced, and at the same time, the production cost is reduced, and the price of the lighting device itself is lowered.

虽然本发明已以实施方式揭示如上，然其并非用以限定本发明，任何本领域的技术人员，在不脱离本发明的精神和范围内，当可作各种的更动与润饰，因此本发明的保护范围当视权利要求所界定者为准。Although the present invention has been disclosed as above in terms of implementation, it is not intended to limit the present invention. Any person skilled in the art may make various modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection of the invention should be defined by the claims.

Claims (27)

1. lighting device comprises:

One first light-emitting component, this first light-emitting component is in order to send the light with one first wavelength, and this first wavelength is less than about 480 nanometers;

One second light-emitting component, this second light-emitting component is in order to send the light with a second wave length, and this second wave length is greater than about 570 nanometers; And

One the 3rd light-emitting component, the 3rd light-emitting component is in order to send the light with a three-wavelength, and mix with the light with this first wavelength and light selecting performance ground with this second wave length, roughly be positioned at white light on the blackbody curve to be formed on chromaticity coordinates point in the XYZ chromaticity diagram;

The color that wherein has the light of this three-wavelength is determined by linear relationship and the light with this second wave length and the linear relationship with white light respective seat punctuate in this XYZ chromaticity diagram of one second colour temperature of the light with this first wavelength with the white light respective seat punctuate in this XYZ chromaticity diagram with one first colour temperature.

2. lighting device as claimed in claim 1, the light that wherein has this first wavelength forms one first line stretcher with the corresponding coordinate points in this XYZ chromaticity diagram of the white light with this first colour temperature through coupling, light with this second wave length forms one second line stretcher with the corresponding coordinate points in this XYZ chromaticity diagram of the white light with this second colour temperature through coupling, and the coordinate points of light in this XYZ chromaticity diagram with this three-wavelength roughly is positioned at this first line stretcher and this second line stretcher intersection.

3. lighting device as claimed in claim 1 wherein has the light of this three-wavelength in order to form the white light that has high color temperature on corresponding this blackbody curve in the colour temperature scope with a blue light.

4. lighting device as claimed in claim 1 wherein has the light of this three-wavelength in order to form the white light that has lowest color temperature in the colour temperature scope on corresponding this blackbody curve with ruddiness mixing.

5. lighting device as claimed in claim 1, wherein have the light of this three-wavelength in order to mix with the light with this first wavelength and to form the white light with this first colour temperature, the light with this three-wavelength forms the white light with this second colour temperature in order to mix with the light with this second wave length.

6. lighting device as claimed in claim 1, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength is not positioned on this blackbody curve.

7. lighting device as claimed in claim 1 wherein has the X value of the coordinate points (X, Y) of light in this XYZ chromaticity diagram of this three-wavelength between about 0.336 and about 0.421, and Y value is between about 0.3915 and about 0.4911.

8. lighting device as claimed in claim 1, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength is positioned at a First punctuate (0.3360,0.4004), one second coordinate points (0.3790,0.4911), one the 3rd coordinate points (0.3770,0.3915) and the formed regional extent of all the people present's punctuate (0.4210,0.4653) in.

9. lighting device as claimed in claim 1 also comprises:

One control element is in order to control this first light-emitting component, this second light-emitting component and the 3rd light-emitting component, to change the luminous intensity of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component.

10. lighting device as claimed in claim 9, wherein the luminous intensity ratio of relative the 3rd light-emitting component of this first light-emitting component is between 0 and about 0.8, and the luminous intensity ratio of relative the 3rd light-emitting component of this second light-emitting component is between 0 and about 0.8.

11. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 5000K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.18: 0: 1.

12. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 4500K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.14: 0.04: 1.

13. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 4000K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.10: 0.08: 1.

14. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 3500K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.07: 0.14: 1.

15. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 3000K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.03: 0.23: 1.

16. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 2700K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.01: 0.31: 1.

17. a lighting device comprises:

One first light-emitting component, this first light-emitting component is in order to send the light with one first wavelength, and this first wavelength is between about 440 nanometers and about 460 nanometers;

One second light-emitting component, this second light-emitting component is in order to send the light with a second wave length, and this second wave length is between about 580 nanometers and about 630 nanometers; And

One the 3rd light-emitting component, the 3rd light-emitting component is in order to send the light with a three-wavelength, be formed in the XYZ chromaticity diagram chromaticity coordinates point to mix with the light with this first wavelength and be positioned at roughly that a colour temperature scope has the white light that high color temperature is arranged on the blackbody curve, or mix with the light with this second wave length and form chromaticity coordinates point and be positioned at roughly that this reference color temperature has the white light that a lowest color temperature is arranged on this blackbody curve.

18. lighting device as claimed in claim 17 wherein has the X value of the coordinate points (X, Y) of light in this XYZ chromaticity diagram of this three-wavelength between about 0.336 and about 0.421, Y value is between about 0.3915 and about 0.4911.

19. lighting device as claimed in claim 17, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength is positioned at a First punctuate (0.3360,0.4004), one second coordinate points (0.3790,0.4911), one the 3rd coordinate points (0.3770,0.3915) and the formed regional extent of all the people present's punctuate (0.4210,0.4653) in.

20. lighting device as claimed in claim 17 also comprises:

One control element, in order to control this first light-emitting component, this second light-emitting component and the 3rd light-emitting component, wherein the luminous intensity ratio of relative the 3rd light-emitting component of this first light-emitting component is between 0 and about 0.8, and the luminous intensity ratio of relative the 3rd light-emitting component of this second light-emitting component is between 0 and about 0.8.

21. a method that produces white light comprises step:

In an XYZ chromaticity diagram, match one first line stretcher according to the coordinate points that has the light of one first wavelength and the colour temperature scope on the blackbody curve of roughly being positioned at has a white light of high color temperature;

In this XYZ chromaticity diagram, match one second line stretcher according to having the light of a second wave length and roughly being positioned at the coordinate points that this reference color temperature on this blackbody curve has the white light of a lowest color temperature; And

Light with a three-wavelength is provided according to matching result, form white light for mixing with the light selecting performance ground with this second wave length with the light with this first wavelength, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength roughly is positioned at this first line stretcher and this second line stretcher intersection.

22. the method for generation white light as claimed in claim 21 also comprises step:

Adjust and mix light with this first wavelength, have the light of this second wave length and have the light of this three-wavelength, wherein have light intensity ratio that the light of this first wavelength has this three-wavelength relatively between 0 and about 0.8, the light with this second wave length has the light intensity ratio of this three-wavelength relatively between 0 and about 0.8.

23. the method for generation white light as claimed in claim 21 also comprises step:

Mix the light with this first wavelength and the light with this three-wavelength, roughly be positioned at the white light that has this high color temperature on this blackbody curve to form.

24. the method for generation white light as claimed in claim 21 also comprises step:

Mix the light with this second wave length and the light with this three-wavelength, roughly be positioned at the white light that has this lowest color temperature on this blackbody curve to form.

25. the method for generation white light as claimed in claim 21, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength is positioned at a First punctuate (0.3360,0.4004), one second coordinate points (0.3790,0.4911), one the 3rd coordinate points (0.3770,0.3915) and the formed regional extent of all the people present's punctuate (0.4210,0.4653) in.

26. the method for generation white light as claimed in claim 21 wherein has the X value of the coordinate points (X, Y) of light in this XYZ chromaticity diagram of this three-wavelength between about 0.336 and about 0.421, Y value is between about 0.3915 and about 0.4911.

27. the method for generation white light as claimed in claim 21, wherein this first wavelength is between about 440 nanometers and about 460 nanometers, and this second wave length is between about 580 nanometers and about 630 nanometers.

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