CN102141210A - High color rendering index and high-brightness light lighting equipment and method for realizing multi color temperature regulation - Google Patents

High color rendering index and high-brightness light lighting equipment and method for realizing multi color temperature regulation Download PDF

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CN102141210A
CN102141210A CN201019164049XA CN201019164049A CN102141210A CN 102141210 A CN102141210 A CN 102141210A CN 201019164049X A CN201019164049X A CN 201019164049XA CN 201019164049 A CN201019164049 A CN 201019164049A CN 102141210 A CN102141210 A CN 102141210A
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light
light source
rendering index
source
emergent
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许颜正
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The invention relates to high color rendering index and high-brightness light lighting equipment and a method for realizing multi color temperature regulation. The lighting equipment comprises a first light source based on optical wavelength conversion and a second light source which provides red lights and in particularly comprises a third light source which provides blue lights or cyan lights, wherein the output lights of the first, the second and the third light sources are combined to a beam of light to serve as a lighting emergent light of the lighting equipment and the first light source provides high-efficiency yellow lights. The method for realizing the regulation comprises the steps of storing the color information of the emergent light provided by the lighting equipment at each preset period as a parameter standard value related to time; sampling the color information of the current lighting emergent light and comparing with the parameter standard value; and regulating the light output power of the first, the second or the third light source by utilizing a feedback control computation circuit according to the comparison result. By utilizing the high color rendering index and high-brightness light lighting equipment and the method for realizing multi color temperature regulation, color temperature regulation of lamp lighting is realized in a wider range and high requirement for multi indexes is realized at a low cost.

Description

The method that high color rendering index (CRI) highlight illumination equipment and realization polychrome temperature thereof are regulated
Technical field the present invention relates to the control or the regulation technology of light source, relates in particular to lighting apparatus light source with the output of polychrome temperature white light and the method for the outgoing white light being carried out color adaptation thereof.
Background technology is that the semiconductor illuminating light source of representative can drive under the electrical power effect luminous (such as but not limited to visible light) with LED (light emitting diode), clean energy-conserving light source for green non-pollution, in decorative lighting, stage illumination, lighting and light source of projector, wide application has been arranged.
Utilize LED to come the scheme of synthesize white light mainly to comprise two kinds at present: one, utilize red, blue, green three-primary color LED to come synthesize white light, have the advantage of being convenient to regulate color.Its two, use blue led to come excitated fluorescent powder to produce yellow stimulated luminescence with synthesize white light, light output has high brightness or high efficiency advantage.In general, adopt the colour rendering index of the synthetic white light source of above-mentioned two kinds of schemes all not reach 80.The colour rendering index of considering incandescent lamp is 99, becomes bad restriction if come replace incandescent to be subjected to colour rendering index undoubtedly with existing LED white light source for the purpose of energy-conservation.In the special lighting occasion that requires high color rendering index (CRI) such as but not limited to museum or studio lights etc., existing LED white light source can not be competent fully in addition.
At lighting field, there is the closely-related Several Parameters of color with light.One of parameter is a colour temperature, has determined the tone of light, has for example determined that white light is inclined to one side Huang (as an incandescent lamp), still the difference of green grass or young crops (as electricity-saving lamp) partially.Usually, the colour temperature of incandescent lamp is about 3200K, and the colour temperature of fine daylight is about 6500K.Two of parameter is Duv (a colour temperature deviation).With Fig. 1 a is example, and peripheral curve has indicated optical wavelength; Middle curve is a blackbody curve.Each chromaticity coordinates is put pairing light and can be called white light on this blackbody curve, and different is that they have different-colour.Fig. 1 b be among Fig. 1 a blackbody curve the part amplify, the angled crossing straight line of each bar and blackbody curve is an isotemperature line.Isotemperature line with 6000K is an example, the colour temperature that each chromaticity coordinates is put pairing light on this straight line is 6000K, but the A point is obviously different with the color that B is ordered, and the color that light is described also depends on its chromaticity coordinates distance (being Duv) between the identical color temperature point to the blackbody curve.The Duv of light has standard code, does not launch here.All on blackbody curve, the Duv of the color that this explanation acquiescence light source will be realized is 0 to the color of object of considering white light source light output, so only uses target color temperature to make light clear, and for example the white light correspondence of 6000K is the chromaticity coordinates point of 6000K on the blackbody curve.
The another one parameter relevant with the color of light is colour rendering index, refers to that light source output illumination is mapped to make object demonstrate the ability of its original color on the object.This parameter index has been weighed the color representation power of light.Spectrum with the white light 1 shown in the thick black solid line among Fig. 2 is example: this white light is by U.S. Pat 5,998, and 925 disclosed schemes are obtained by blue-ray LED and YAG fluorescent material; As seen the ruddiness accounting in its spectral component more than the 600nm wavelength is less.When this illumination is mapped on the cerise object (corresponding wavelength is about 650nm), object is looked seem intensely dark, not vivid.
For high brightness and the high color rendering index (CRI) of taking into account light source, industry is improved above-mentioned second kind of scheme.For example the colour rendering index of white light 1 is lower than 75 in the foregoing description, mainly be because lack red composition in the spectrum of this white light, so industry adopts the way of mixing red fluorescence powder in YAG fluorescent material to realize high color rendering index (CRI) (even can be higher than 90).With the white light 2,3 shown in fine line among Fig. 2 or the superficial solid line is example, is respectively the white-light spectrum behind the red light fluorescent powder that adds heterogeneity and content.The pairing color parameter of these white lights is shown in following table:
Colour temperature/K Colour rendering index
White light 1 6464 72.8
White light 2 4593 79.6
White light 3 2963 81.4
As seen, mixing red fluorescence powder is of value to the raising colour rendering index, but can make the light output efficiency of light source high brightness descend simultaneously, in addition drop to former efficient half or lower.
For this reason, U.S. Pat 7,213,940 have proposed the another kind of scheme of obtaining the warm tones white light, can better take into account the index demand of brightness and colour rendering.This scheme is higher than 90 by adding the colour rendering index that red-light LED improves light source, colour rendering index can being brought up to, even 95.Particularly, this scheme stipulated white light be by the blue light of a kind of LED of coming from (430~480nm) with this blue-light excited sodium yellow (555~585nm), and come from LED ruddiness (600~630nm) synthesize.As shown in Figure 3, by regulating the proportion of ruddiness in synthetic light, can realize light transition that blue light and gold-tinted synthesize white light to the blackbody curve representative.The weak point of this scheme is that its attainable white light reference color temperature is 2300K~4000K, and this light source can't be exported the above and white light of chromaticity coordinates on blackbody curve of 4000K; Especially can't be in the switching that realizes on the same light fixture having between cold, the warm white of big colour temperature span.
The summary of the invention the technical problem to be solved in the present invention is at above-mentioned the deficiencies in the prior art part, and a kind of lighting apparatus and method thereof are proposed, take into account under the prerequisite of the colour rendering of light source and brightness, realize regulating, to satisfy the conversion demand of specific occasion illuminating color than the colour temperature of large span.
For solving the problems of the technologies described above, of the present inventionly be contemplated that substantially: considering in the spectral component of cool tone white light needs more blue light or blue or green light component,, warm tones white light cold and be convenient between the two, switch in order to take into account, the present invention adopts at least two or two groups of LED, Lan Qingguang and ruddiness are provided respectively, mix mutually with blue excitation light and yellow stimulated luminescence; Obtain versicolor light by the mixed proportion of regulating various light, especially the various white lights on the blackbody curve.
As the technical scheme that realizes the present invention's design be, a kind of high color rendering index (CRI) highlight illumination equipment is provided, comprise first light source based on light wavelength conversion, this first light source comprises excitation source and is excited to produce the optical wavelength conversion material of gold-tinted; Also comprise the secondary light source that ruddiness is provided; Especially, the chromaticity coordinates of the emergent light of described first light source in the CIE1931 colorimeter system drops on by chromaticity coordinates point (0.32,0.345), (0.4,0.395), (0.465,0.42), (0.52,0.48), in polygonal scope of forming of (0.4,0.6) and (0.265,0.35) order line; Also comprise the 3rd light source that blue light or blue or green light are provided; This first, second become a branch of with the output actinic light of the 3rd light source, be used as the illumination emergent light of this lighting apparatus.
Specifically, in the such scheme, described optical wavelength conversion material comprises fluorescent material or luminescent dye or nano luminescent material.Can be YAG:Ce fluorescent material.Also can comprise YAG:Ce fluorescent material and at least a peak wavelength redness or orange-colored light material for transformation of wave length at 580nm~680nm.It is light emitting source that described first, second or the 3rd light source adopt LED or led array.Described first light source can also comprise optical filter or filter coating, limits the composition of included light from described excitation source in the emergent light of this first light source.
In the such scheme, the peak wavelength of the light that described secondary light source provides is between 580nm~700nm; The peak wavelength of the light that the 3rd light source provides is between 420nm~500nm; The peak wavelength of the light that the excitation source of first light source provides is between 250nm~500nm.
In the such scheme, lighting apparatus also comprises color sensor, and described illumination emergent light is sampled, and converts the colouring information of this illumination emergent light to the signal of telecommunication and output toward the FEEDBACK CONTROL computing circuit; Described FEEDBACK CONTROL computing circuit is exported control and regulation signal more than one road or one tunnel toward the light emitting source drive circuit of described first, second or the 3rd light source, to control this first, second or the optical output power of the 3rd light source.
As the technical scheme that realizes the present invention's design still, provide a kind of method that realizes that the polychrome temperature is regulated, be used for high color rendering index (CRI) highlight illumination equipment, especially, also comprise step:
A., the illumination emergent light that makes this lighting apparatus is set is the light that closes from three road light sources; Wherein first light source comprises excitation source and is excited to produce the optical wavelength conversion material of gold-tinted, and secondary light source provides ruddiness, and the 3rd light source provides blue light or blue or green light;
B. determine the illumination emergent light that this lighting apparatus of each scheduled time slot will provide, the colouring information of this illumination emergent light is stored as parameter and standard value with time correlation with different-colour;
C. sampling is when the colouring information of front lit emergent light, converts this colouring information to the signal of telecommunication and is sent to the FEEDBACK CONTROL computing circuit and current period corresponding parameters standard value compares;
D. described FEEDBACK CONTROL computing circuit output control and regulation signal is toward the light emitting source drive circuit of described first, second or the 3rd light source, if the result of described comparison is not inconsistent, then this FEEDBACK CONTROL computing circuit changes the size of described control and regulation signal, to regulate this first, second or the optical output power of the 3rd light source, continue step c and conform to up to the result of described comparison.
In the such scheme, described optical wavelength conversion material comprises fluorescent material or luminescent dye or nano luminescent material, for example comprise YAG:Ce fluorescent material, or YAG:Ce fluorescent material and at least a peak wavelength are at the redness of 580nm~680nm or the mixture of orange-colored light material for transformation of wave length.The peak wavelength of the light that described secondary light source provides is between 580nm~700nm; The peak wavelength of the light that the 3rd light source provides is between 420nm~500nm; The peak wavelength of the light that the excitation source of first light source provides is between 250nm~500nm.Specifically, the chromaticity coordinates of the stimulated luminescence of the optical wavelength conversion material of described first light source is roughly (0.43,0.46); The dominant wavelength of the 3rd light source output light is roughly 475nm, and chromaticity coordinates is roughly (0.11,0.08); The dominant wavelength of secondary light source output light is roughly 625nm, and chromaticity coordinates is roughly (0.7,0.3).
In the such scheme, it is light emitting source that described first, second or the 3rd light source adopt LED or led array.In the steps d, the mode of the optical output power of each light source of control and regulation Signal Regulation comprises: the size of current of lighting number, control LED of control LED or the pulse width or the dutycycle of control LED drive current.Among the step a, the emergent light that described first light source provides comprises stimulated luminescence or/and the exciting light that part is not absorbed by optical wavelength conversion material.
Adopt above-mentioned each technical scheme, realized the dynamic adjustments of light color, thereby light source can satisfy different occasions and user's demand; Further, can also guarantee the stability of mixed light color, as not in time long-term passage and color drift takes place; Realized the high request of many index at lower cost.
Description of drawings 1a and 1b illustrate to influence the several parameters that light source is exported light color in the prior art with chromaticity coordinates figure;
Fig. 2 has illustrated the light output spectrum of several white light sources in the prior art;
Fig. 3 has illustrated U.S. Pat 7,213, and 940 realize the mode that polychrome temperature white lights are exported;
Fig. 4 has illustrated the present invention to realize the operation principle that the polychrome temperature is regulated;
Fig. 5 has illustrated the present invention to realize the embodiment that the polychrome temperature is regulated;
Fig. 6 has illustrated the white-light spectrum of 3200K colour temperature among Fig. 5 embodiment;
Fig. 7 has illustrated the white-light spectrum of 5600K colour temperature among Fig. 5 embodiment;
Fig. 8 has illustrated the structural principle of lighting device of the present invention.
Below the specific embodiment, the most preferred embodiment shown in is further set forth the present invention in conjunction with the accompanying drawings.
Fig. 4 has illustrated operation principle of the present invention.When there being three light sources, for example blue-light source (with ▲ signal), red light source (with ◆ the signal) and the gold-tinted source (with ● the signal) time, make the chromaticity coordinates point of these three light sources constitute a triangle, then according to the colour mixture principle, change its synthetic ratio and can obtain triangle with interior light of pairing color a bit arbitrarily by controlling these three kinds of light intensities.If make this triangle can cover the major part of blackbody curve, as shown in the figure,, can improve the luminance efficiency of light source if make described gold-tinted come from the stimulated luminescence of fluorescent material; When the regional extent of gold-tinted chromaticity coordinates as shown by the chromaticity coordinates in a plurality of CIE1931 colorimeter systems, be respectively (0.32,0.345), (0.4,0.395), (0.465,0.42), (0.52,0.48), (0.4,0.6) and (0.265,0.35) summit when limiting, then can produce the triangle that covers blackbody curve as far as possible by the chromaticity coordinates of apolegamy ruddiness and blue light, thereby can obtain colour temperature approximately greater than the random color white light of 2560K, this white light has the colour rendering index greater than 85 simultaneously, in some colour temperature section even can reach 95, and can in greater than the scope of 2560K, realize the function that the light fixture colour temperature is regulated based on this.
Thus, the light supply apparatus that the present invention proposes as shown in Figure 8, comprise first light source based on light wavelength conversion, as the legend in the middle of being positioned at shown in, this first light source comprises excitation source and is excited to produce the optical wavelength conversion material of gold-tinted, for example has the fluorescent material or the luminescent dye of wide range stimulated luminescence characteristic.With fluorescent material is example, can adopt YAG:Ce fluorescent material; Perhaps adopt the mixture of multiple fluorescent material, for example YAG:Ce fluorescent material and at least a peak wavelength are at the mixture of the redness of 580nm~680nm or orange-colored light material for transformation of wave length (here even can select the nano luminescent material with narrow spectrum stimulated luminescence characteristic for use); Corresponding excitation source can adopt the LED or the led array of blue light-emitting or ultraviolet light.The arbitrary structures that can adopt prior art that combines of optical wavelength conversion material and excitation source such as but not limited to encapsulate fluorescent material and excitation source with reflector, repeats no more here.
As shown in Figure 8, apparatus of the present invention also comprise secondary light source that ruddiness is provided and the 3rd light source that blue light or blue or green light are provided.This first, second become a branch of with the output actinic light of the 3rd light source, be used as the illumination emergent light of this lighting source.In order to realize the white light output of big reference color temperature, the light wavelength scope that best described secondary light source provides is 580nm~700nm, the light wavelength scope that the 3rd light source provides is 420nm~500nm, and the light wavelength scope that the excitation source of first light source provides is 250nm~500nm.The emergent light of described first light source can also comprise the exciting light that part is not absorbed by fluorescent material except stimulated luminescence.But if exciting light adopts ultraviolet light, or for other consideration, can in first light source, adopt optical filter or filter coating, limit the composition of included light from excitation source in the emergent light of this first light source, such as but not limited to only allowing this first light source export yellow stimulated luminescence.
This first, second and the locus of the 3rd light source can determine flexibly according to the volume of device.For example, when described first, second adopts LED or led array to be light emitting source with the 3rd light source, each LED of first, second, third light source can be formed at staggeredly on the same substrate, constitute a led array, each the LED drive electrode in the array is connected respectively on the pairing light emitting source drive circuit of this LED; Maybe each self-corresponding LED of first, second, third light source can be formed at separately on the substrate separately, synthesize a branch of by means of the light output that divides photosynthetic look device (such as but not limited to the dichroic sheet) with first, second, third light source.Like this, can in the broad reference color temperature, realize the colour temperature transposing of light by the various combination of lighting power of first, second and the 3rd light source that set in advance.
The emergent light colour temperature can be regulated automatically or effect steady in a long-term in order to reach, apparatus of the present invention can also comprise color sensor, described illumination emergent light is sampled, convert the colouring information of this illumination emergent light to the signal of telecommunication and output toward the FEEDBACK CONTROL computing circuit; Described FEEDBACK CONTROL computing circuit is exported control and regulation signal more than one road or one tunnel toward the light emitting source drive circuit of described first, second or the 3rd light source, to control this first, second or the optical output power of the 3rd light source.
Correspondingly, the present invention is used for the polychrome temperature control method of above-mentioned lighting source, will comprise step:
A., the illumination emergent light that makes this lighting source is set is the light that closes from three road light sources; Wherein first light source comprises excitation source and is excited to produce the fluorescent material of gold-tinted, and secondary light source provides ruddiness, and the 3rd light source provides blue light or blue or green light;
B. determine the illumination emergent light that this lighting source of each scheduled time slot will provide, the colouring information of this illumination emergent light is stored as parameter and standard value with time correlation with different-colour;
C. sampling is when the colouring information of front lit emergent light, converts this colouring information to the signal of telecommunication and is sent to the FEEDBACK CONTROL computing circuit and current period corresponding parameters standard value compares;
D. described FEEDBACK CONTROL computing circuit output control and regulation signal is toward the light emitting source drive circuit of described first, second or the 3rd light source, if the result of described comparison is not inconsistent, then this FEEDBACK CONTROL computing circuit changes the size of described control and regulation signal, to regulate this first, second or the optical output power of the 3rd light source, continue step c and conform to up to the result of described comparison.
Wherein, the mode of the optical output power of each light source of control and regulation Signal Regulation can be the number of lighting of control LED, and also can be the size of current of control LED or the pulse width or the dutycycle of control LED drive current.Specifically, can adjust series impedance with the input voltage of change LED or the size of input current by simple analog circuit; Perhaps in order to realize more control purpose and effect, use digital circuit to modulate the waveform that changes described input voltage or input current, for example by modulation control power supply switch tube, provide a pulse to make power supply close LED again for this switching tube, thereby change the optical output power of this LED with next the lighting fully of very fast speed (avoiding flicker) with its nominal current.Described modulation comprises pulsewidth modulation, frequency modulation(PFM) or parallactic angle modulation.Wherein pulsewidth modulation is to realize by the width that change offers the pulse of described power supply switch tube; The width of described pulse is then fixed in frequency modulation(PFM), and the described control to excitation source is realized in the recurrence interval that changes this pulse; Parallactic angle modulation then is to produce corresponding spike train with a string binary data (each pulse duration in this spike train is come unique definite by the bit place value of this pulse correspondence, for example lowest order was 1 unit interval, inferior low level be 2 unit interval, low once more by 4,8,16 ... unit interval, the rest may be inferred).For different illumination application requirements, can adopt corresponding modulation control mode.Because of these modulation controls are prior art, do not given an example in detail at this.According to the different choice of described modulation, the timesharing control that the light emitting source drive circuit of described first, second or the 3rd light source can be designed to come, or be designed to multichannel and control respectively.
Fig. 5 has illustrated one embodiment of the present of invention, can realize that the studio lamp that two grades of colour temperatures are regulated is an example.The chromaticity coordinates of fluorescent material stimulated luminescence is roughly (0.43,0.46); The 3rd light source, for example the dominant wavelength of blue-ray LED output light is roughly 475nm, and chromaticity coordinates is roughly (0.11,0.08); Secondary light source, for example the dominant wavelength of red-light LED output light is roughly 625nm, and chromaticity coordinates is roughly (0.7,0.3).Control the relative intensity that three light sources are exported light by the inventive method, can be implemented in the light of any some corresponding color in the delta-shaped region.In the present embodiment, preestablish the white light of two grades of colour temperatures, for example 3200K and 5600K have the luminescent spectrum as Fig. 6 and 7 respectively, and colour rendering index is respectively 95 and 85.The colouring information of these two kinds of white lights is stored in the FEEDBACK CONTROL computing circuit, can be to store in the memory of this FEEDBACK CONTROL computing circuit, also can come real-time Transmission to give this FEEDBACK CONTROL computing circuit by a central processing unit (CPU); Like this, according to the inventive method, circuit is exported versicolor control and regulation signal to corresponding LED Drive and Control Circuit according to colouring information, can realize the switching output to two kinds of white lights in good time.And the like, the present invention utilizes feedback procedure can realize the color dynamic adjustments of light according to different occasions and user's request; Perhaps, export color because of the light of three road light sources and have the different rates of decay in time, the present invention is by monitoring the dynamic stability that has guaranteed color in real time to the light source emergent light color.

Claims (10)

1. a high color rendering index (CRI) highlight illumination equipment comprises first light source based on light wavelength conversion, and this first light source comprises excitation source and is excited to produce the optical wavelength conversion material of gold-tinted; Also comprise the secondary light source that ruddiness is provided; It is characterized in that:
The chromaticity coordinates of the emergent light of described first light source in the CIE1931 colorimeter system drops on by chromaticity coordinates point (0.32,0.345), (0.4,0.395), (0.465,0.42), (0.52,0.48), in polygonal scope of forming of (0.4,0.6) and (0.265,0.35) order line;
Also comprise the 3rd light source that blue light or blue or green light are provided; This first, second become a branch of with the output actinic light of the 3rd light source, be used as the illumination emergent light of this lighting apparatus.
2. high color rendering index (CRI) highlight illumination equipment according to claim 1 is characterized in that:
Described optical wavelength conversion material comprises fluorescent material or luminescent dye or nano luminescent material.
3. high color rendering index (CRI) highlight illumination equipment according to claim 1 and 2 is characterized in that:
Described optical wavelength conversion material comprises YAG:Ce fluorescent material; Perhaps comprise YAG:Ce fluorescent material and at least a peak wavelength redness or orange-colored light material for transformation of wave length at 580nm~680nm.
4. high color rendering index (CRI) highlight illumination equipment according to claim 1 is characterized in that:
The peak wavelength of the light that described secondary light source provides is between 580nm~700nm; The peak wavelength of the light that the 3rd light source provides is between 420nm~500nm; The peak wavelength of the light that the excitation source of first light source provides is between 250nm~500nm.
5. high color rendering index (CRI) highlight illumination equipment according to claim 1 is characterized in that:
Described first light source also comprises optical filter or filter coating, limits the composition of included light from described excitation source in the emergent light of this first light source.
6. high color rendering index (CRI) highlight illumination equipment according to claim 1 is characterized in that:
Also comprise color sensor, described illumination emergent light is sampled, convert the colouring information of this illumination emergent light to the signal of telecommunication and output toward the FEEDBACK CONTROL computing circuit; Described FEEDBACK CONTROL computing circuit is exported control and regulation signal more than one road or one tunnel toward the light emitting source drive circuit of described first, second or the 3rd light source, to control this first, second or the optical output power of the 3rd light source.
7. a method that realizes that the polychrome temperature is regulated is used for high color rendering index (CRI) highlight illumination equipment, it is characterized in that, comprises step:
A., the illumination emergent light that makes this lighting apparatus is set is the light that closes from three road light sources; Wherein first light source comprises excitation source and is excited to produce the optical wavelength conversion material of gold-tinted, and secondary light source provides ruddiness, and the 3rd light source provides blue light or blue or green light;
B. determine the illumination emergent light that this lighting apparatus of each scheduled time slot will provide, the colouring information of this illumination emergent light is stored as parameter and standard value with time correlation with different-colour;
C. sampling is when the colouring information of front lit emergent light, converts this colouring information to the signal of telecommunication and is sent to the FEEDBACK CONTROL computing circuit and current period corresponding parameters standard value compares;
D. described FEEDBACK CONTROL computing circuit output control and regulation signal is toward the light emitting source drive circuit of described first, second or the 3rd light source, if the result of described comparison is not inconsistent, then this FEEDBACK CONTROL computing circuit changes the size of described control and regulation signal, to regulate this first, second or the optical output power of the 3rd light source, continue step c and conform to up to the result of described comparison.
8. according to the method for the described realization polychrome of claim 7 temperature adjusting, it is characterized in that:
The chromaticity coordinates of the stimulated luminescence of the optical wavelength conversion material of described first light source is roughly (0.43,0.46); The dominant wavelength of the 3rd light source output light is roughly 475nm, and chromaticity coordinates is roughly (0.11,0.08); The dominant wavelength of secondary light source output light is roughly 625nm, and chromaticity coordinates is roughly (0.7,0.3).
9. according to the method for the described realization polychrome of claim 7 temperature adjusting, it is characterized in that:
It is light emitting source that described first, second or the 3rd light source adopt LED or led array; Correspondingly, in the steps d, the mode of the optical output power of each light source of control and regulation Signal Regulation comprises: the size of current of lighting number, control LED of control LED or the pulse width or the dutycycle of control LED drive current.
10. according to the method for the described realization polychrome of claim 7 temperature adjusting, it is characterized in that:
Among the step a, the emergent light that described first light source provides comprises stimulated luminescence or/and the exciting light that part is not absorbed by optical wavelength conversion material.
CN201019164049XA 2010-02-01 2010-02-01 High color rendering index and high-brightness light lighting equipment and method for realizing multi color temperature regulation Pending CN102141210A (en)

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TWI475175B (en) * 2011-08-15 2015-03-01 Appotronics Corp Ltd Multi - color light - emitting device
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CN105068361A (en) * 2015-09-10 2015-11-18 上海傲蕊光电科技有限公司 Multi-color LED light source device and image system
CN103249205B (en) * 2012-02-09 2016-11-30 上海技磐光电科技有限公司 Led lamp
CN106604471A (en) * 2016-12-31 2017-04-26 复旦大学 Method for carrying out segmented color temperature adjustment by using multiple full-spectrum white light sources
CN108180416A (en) * 2017-12-28 2018-06-19 广州市轩士佳电子科技有限公司 One kind absorbs chromaticity coordinates and exports corresponding chromaticity coordinates height automatically shows finger light-source system
CN108302335A (en) * 2016-08-29 2018-07-20 欧普照明股份有限公司 A kind of lighting device and the lamps and lanterns including the lighting device
WO2021072679A1 (en) * 2019-10-16 2021-04-22 肖高利 Control method for adaptively adjusting brightness, chromaticity, and color temperature of light source
WO2021072678A1 (en) * 2019-10-16 2021-04-22 肖高利 Lamp source for improving color rendering index and method for changing color temperature
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TWI475175B (en) * 2011-08-15 2015-03-01 Appotronics Corp Ltd Multi - color light - emitting device
CN104991410B (en) * 2011-12-08 2017-05-17 深圳市光峰光电技术有限公司 Light source system and projection device
CN102645830B (en) * 2011-12-08 2015-07-29 深圳市光峰光电技术有限公司 Light-source system and projection arrangement
CN102645830A (en) * 2011-12-08 2012-08-22 深圳市光峰光电技术有限公司 Light source system and projector
CN102720954B (en) * 2012-01-14 2014-08-27 深圳市光峰光电技术有限公司 Light emitting device and light emitting system
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CN103249206A (en) * 2012-02-09 2013-08-14 上海技磐光电科技有限公司 LED lamp
CN103249205A (en) * 2012-02-09 2013-08-14 上海技磐光电科技有限公司 Led lamp
CN103249205B (en) * 2012-02-09 2016-11-30 上海技磐光电科技有限公司 Led lamp
CN103453446A (en) * 2012-06-05 2013-12-18 泷汉科技股份有限公司 Method for simulating natural light spectrum and device obtained thereby
CN102734671A (en) * 2012-06-20 2012-10-17 上海大学 High intelligence indoor white light LED (Light-Emitting Diode) lamp
WO2014023067A1 (en) * 2012-08-05 2014-02-13 深圳市绎立锐光科技开发有限公司 Light-emitting device and related projection system
CN104421711A (en) * 2013-08-30 2015-03-18 Lg伊诺特有限公司 Lighting device
CN104421711B (en) * 2013-08-30 2019-07-12 Lg伊诺特有限公司 Lighting device
CN105068361A (en) * 2015-09-10 2015-11-18 上海傲蕊光电科技有限公司 Multi-color LED light source device and image system
CN108302335A (en) * 2016-08-29 2018-07-20 欧普照明股份有限公司 A kind of lighting device and the lamps and lanterns including the lighting device
CN108302335B (en) * 2016-08-29 2020-02-21 欧普照明股份有限公司 Lighting device and lamp comprising same
CN106604471A (en) * 2016-12-31 2017-04-26 复旦大学 Method for carrying out segmented color temperature adjustment by using multiple full-spectrum white light sources
CN108180416A (en) * 2017-12-28 2018-06-19 广州市轩士佳电子科技有限公司 One kind absorbs chromaticity coordinates and exports corresponding chromaticity coordinates height automatically shows finger light-source system
WO2021072679A1 (en) * 2019-10-16 2021-04-22 肖高利 Control method for adaptively adjusting brightness, chromaticity, and color temperature of light source
WO2021072678A1 (en) * 2019-10-16 2021-04-22 肖高利 Lamp source for improving color rendering index and method for changing color temperature
US11369014B2 (en) 2020-07-14 2022-06-21 Coretronic Corporation Light beam generating device, projection device, and light beam generating method

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Application publication date: 20110803