CN104654052A - Illuminating equipment - Google Patents
Illuminating equipment Download PDFInfo
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- CN104654052A CN104654052A CN201310577015.XA CN201310577015A CN104654052A CN 104654052 A CN104654052 A CN 104654052A CN 201310577015 A CN201310577015 A CN 201310577015A CN 104654052 A CN104654052 A CN 104654052A
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- light
- emitting diode
- diode chip
- substrate
- light source
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/141—Beam splitting or combining systems operating by reflection only using dichroic mirrors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/10—Simultaneous recording or projection
- G03B33/12—Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors
Abstract
The invention provides illuminating equipment, and belongs to the field of optics. The equipment comprises a first light source for emitting red light and blue light; a second light source including a first light emitting diode chip and a fluorescent substance arranged on the first light emitting diode chip, wherein light rays emitted by the first light emitting diode chip can excite the fluorescent substance, so that the second light source emits green light or yellow light; and a light combining device for combining and outputting the red light and the blue light from the first light source and the green light or the yellow light from the second light source. The equipment enhances the brightness of the green light.
Description
Technical field
The present invention relates to a kind of lighting apparatus, particularly a kind of stage lighting apparatus.
Background technology
Along with the development of semiconductor solid-state optical source technology in recent years and the problem such as energy shortage, global warming in the puzzlement whole world become increasingly conspicuous, semiconductor light-emitting-diode (LED) light source is with the advantage such as its energy-saving and environmental protection, brightness and colour temperature be controlled, all trades and professions are widely used, have greatly the trend replacing conventional light source.Have reason to believe, in the near future, along with the reduction of light emitting diode (LED) cost and the raising of light efficiency rate, semiconductor light-emitting-diode (LED) light source likely replaces conventional light source comprehensively.
To shake the head pattern lamp for light of stage computer, once proposed high-power three primary colours (red (R), green (G) and blue (B)) LED light source (as shown in Figure 1).In this light supply apparatus, all synthesis colors be all by controlling red (R) respectively, the drive current of green (G) and blue (B) three-color light-emitting diode (LED) realizes the proportioning of color.This scheme adopts three-primary color LED directly luminous, because the luminescent spectrum of LED is narrow spectrum, the i.e. width of its spectrum less (full width at half maximum of the luminescent spectrum of such as green light LED is about 50nm), so the monochromatic color saturation of three-color light-emitting is higher, the requirement of stage performance to bright-colored degree can be met.
With reference to Fig. 1, in the lighting apparatus of prior art, have Light-Emitting Diode (LED) array 1,2,3 sending ruddiness, blue light and green glow respectively, described array comprises Light-Emitting Diode 6.Its isolychn converges in pattern segments 9 through Multiplexing apparatus 5, dodging device 7, lens 8 etc.
The monochromatic color saturation that in above-mentioned light source, three-primary color LED sends is very high, therefore, it is possible to meet the requirement of stage performance for bright-colored degree.But adopt red (R), that a shortcoming of green (G) and blue (B) three primary colors LED light source is that light source overall brightness exports is not high, especially the brightness of white light exports not high.
Summary of the invention
For above-mentioned defect of the prior art, applicant studies discovery, its main cause is so far, the luminous efficiency of green glow chip far below blue chip, also lower than red light chips, simultaneously, when synthesize white light, the luminance components of green glow is also not enough, thus causes light source overall brightness to export not high, and especially the brightness of white light exports not high.
For above problem, the problem to be solved in the present invention mainly improves the brightness of light source green glow, thus improves the efficiency of whole light source.
The present invention proposes a kind of lighting apparatus, comprising: the first light source, for sending Red and blue light; Secondary light source, comprise the first light-emitting diode chip for backlight unit and be arranged on the fluorescent material on described first light-emitting diode chip for backlight unit, the light that described first light-emitting diode chip for backlight unit sends can excite described fluorescent material, thus makes described secondary light source send green glow or gold-tinted; Multiplexing apparatus, it is for combining the Red and blue light from described first light source and the green glow from described secondary light source or gold-tinted and export.
In one embodiment, also comprise the second light-emitting diode chip for backlight unit, the fluorescent material that the light that described second light-emitting diode chip for backlight unit sends is directed into described secondary light source excites described fluorescent material luminous.By the setting of the second light emitting diode chip, and the setting of optics and light path, achieve the secondary excitation of fluorescent material, substantially increase the luminous efficiency of secondary light source (i.e. green-light source), compensate for deficiency of the prior art.
In one embodiment, described first light emitting diode chip and described second light-emitting diode chip for backlight unit issued light line are blue light, and described fluorescent material is gold-tinted and/or green-emitting fluorescent material.
In one embodiment, described first light-emitting diode chip for backlight unit on the end face of described Multiplexing apparatus, be furnished with described fluorescent material, the bottom surface away from described Multiplexing apparatus of described first light-emitting diode chip for backlight unit is capable of reflecting light line, the light that the described fluorescent material excited by the light from described second light-emitting diode chip for backlight unit sends through the bottom reflection of described first light emitting diode chip on described Multiplexing apparatus.Setting like this, guides to Multiplexing apparatus by fluorescent material issued light line dexterously.
In one embodiment, multiple described first light emitting diode chip package is on second substrate, multiple described second light emitting diode chip package is on first substrate, and described first light source comprises and is encapsulated into multiple red light-emitting diode chip on the 3rd substrate and multiple blue LED chip.
In one embodiment, described first substrate, described second substrate and described 3rd substrate form three articles of limits of rectangle, and described first substrate and described 3rd substrate-parallel are arranged, described Multiplexing apparatus is tabular and forms the angular bisector of described second substrate and described 3rd substrate.
In one embodiment, described Multiplexing apparatus comprises optical filter, and at least one side of described optical filter is coated with transmit green and the filter coating of reflect red and blue light.
In one embodiment, described Multiplexing apparatus comprises optical filter, described optical filter is coated with reflect blue and the first filter coating of transmit red light and green glow on the first surface towards described secondary light source, and described optical filter is coated with reflect red and the second filter coating of transmit blue and green glow on the second surface towards described first light source.
In one embodiment, the cutoff wavelength of described first filter coating is in the scope of 470nm-510nm, and the cutoff wavelength of described second filter coating is in the scope of 550nm-620nm.
In one embodiment, described Multiplexing apparatus comprises at least two optical filters, near described secondary light source optical filter on the surface of described secondary light source, be coated with reflect blue and the 3rd filter coating of transmit red light and green glow, the surface deviating from described secondary light source farthest away from the optical filter of described secondary light source is coated with reflect red and the 4th filter coating of transmit blue and green glow.
In one embodiment, described Multiplexing apparatus comprises optical filter, and at least one of described optical filter is coated with anti-reflection film on the surface.Anti-reflection film effectively can increase the light transmittance of Multiplexing apparatus.
In one embodiment, on described 3rd substrate, the number ratio of described red light-emitting diode chip and described blue LED chip is in the scope of 1/4 to 3/4.Certainly, this photochromicly can to regulate according to required.
In one embodiment, described first substrate, described second substrate and described 3rd substrate form three articles of limits of rectangle, and described first substrate is parallel with described second substrate, described Multiplexing apparatus is tabular and forms the angular bisector of described second substrate and described 3rd substrate, and described Multiplexing apparatus can reflect green light transmit red light and blue light.The optical effect of this structure is identical with embodiment recited above, this equipment structure is described flexibly.
In one embodiment, described second light-emitting diode chip for backlight unit is furnished with receipts electro-optical device, for by the collimate light of described second light-emitting diode chip for backlight unit in set dispersion angle.So can improve the utilization rate of luminous energy, reduce and dissipate.
In one embodiment, also comprise for by the dodging device of the equalizing light rays from described Multiplexing apparatus, by the lens of the light focusing after homogenising and pattern segments, described lens by described light focusing in described pattern segments.
In one embodiment, also comprise and be arranged on the described transmit green in pattern segments light path front and the downstream filters of reflect red and blue light, for ensureing the saturation degree of green glow according to optical path direction.
Above-mentioned technical characteristic various applicable mode can combine or substituted by the technical characteristic of equivalence, as long as can reach object of the present invention.
According to the embodiment of equipment of the present invention and improvement thereof, by the setting of the second light emitting diode chip, and the setting of optics and light path, achieve the secondary excitation of fluorescent material, substantially increase the luminous efficiency of secondary light source (i.e. green-light source), compensate for deficiency of the prior art.
In addition, lighting apparatus according to the present invention has following advantage: the first, due to the raising of green glow brightness, can significantly improve the overall brightness of system; The second, because green glow is wide spectral, when by three primary colours synthesize white light, the defeated property of company of spectrum can be improved, improve the colour rendering of light source; 3rd, although the colour rendering of light source improves, still can be obtained the green glow of high saturation by optical filter, and the colour mixture of RGB system can not be affected; 4th, according to actual needs, the height aobvious finger color gamut systems of the high saturated green glow of wide colour gamut and high-brightness white-light can be obtained.
Accompanying drawing explanation
Also with reference to accompanying drawing, the present invention is described in more detail based on being only non-limiting embodiment hereinafter.Wherein:
Fig. 1 shows lighting apparatus of the prior art;
Fig. 2 shows according to lighting apparatus of the present invention;
Fig. 3 shows the secondary light source according to lighting apparatus of the present invention;
Fig. 4 shows the transmission curve figure of the Multiplexing apparatus according to lighting apparatus of the present invention in the first embodiment, and wherein transverse axis is wavelength of light, and the longitudinal axis is light transmittance;
Fig. 5 shows the structural representation of the Multiplexing apparatus according to lighting apparatus of the present invention in the second embodiment;
Fig. 6 shows the transmission curve figure of the first filter coating of the Multiplexing apparatus according to lighting apparatus of the present invention in the second embodiment, and wherein transverse axis is wavelength of light, and the longitudinal axis is light transmittance;
Fig. 7 shows the transmission curve figure of the second filter coating of the Multiplexing apparatus according to lighting apparatus of the present invention in the second embodiment, and wherein transverse axis is wavelength of light, and the longitudinal axis is light transmittance;
Fig. 8 shows the structural representation of the Multiplexing apparatus according to lighting apparatus of the present invention in the 3rd embodiment;
Fig. 9 shows the colour gamut according to lighting apparatus of the present invention;
Figure 10 shows the spectrum comparison diagram according to lighting apparatus of the present invention;
Figure 11 shows the white-light spectrum comparison diagram according to lighting apparatus of the present invention.
In the drawings, identical component is indicated by identical Reference numeral.Accompanying drawing is not according to the scale of reality.
Detailed description of the invention
Come below with reference to accompanying drawings to introduce the present invention in detail.
Fig. 2 shows according to lighting apparatus 50 of the present invention.Lighting apparatus 50 comprises the first light source 100, for sending Red and blue light.
Lighting apparatus 50 also comprises secondary light source 200.Fig. 3 show in more detail the structure of secondary light source 200.With reference to Fig. 3, secondary light source 200 comprises the first light-emitting diode chip for backlight unit 12 and is arranged on the fluorescent material 13 of on the first light-emitting diode chip for backlight unit 12, the light 14 that first light-emitting diode chip for backlight unit 12 sends can fluorescence excitation material 13, thus makes secondary light source 200 to send green glow.This excites to be called and excites for the first time.The luminescence of the first light-emitting diode chip for backlight unit 12 can be driven by electric current.
In one embodiment, the first light emitting diode chip 12 has corresponding receives electro-optical device 30, is used for the light sent after collection first light emitting diode chip 12 fluorescence excitation material 13, and is collimated into the light of certain angle of divergence.
Referring again to Fig. 2, lighting apparatus 50 also comprises Multiplexing apparatus 11, and it is for by the Red and blue light from described first light source 100 and combine from the green glow of described secondary light source 200 and export.
In a preferred embodiment, lighting apparatus 50 also comprises the second light-emitting diode chip for backlight unit 20.Fig. 3 shows the second light emitting diode chip 20 and how mutually to cooperate with secondary light source 200.With reference to Fig. 3, the light 15 that the second light-emitting diode chip for backlight unit 20 sends to be directed on the fluorescent material 13 of secondary light source 200 and fluorescence excitation material 13 by optical system (such as Multiplexing apparatus 11).This excites to be called and excites for the second time.
Preferably, the second light-emitting diode chip for backlight unit 20 is furnished with receipts electro-optical device, for by the collimate light of the second light-emitting diode chip for backlight unit 20 in set dispersion angle.So can improve capacity usage ratio, reduce the dissipation of light.Light after collimation through the reflection of Multiplexing apparatus 11, then focuses on the fluorescent material 13 on the first corresponding light-emitting diode chip for backlight unit 12 through the receipts electro-optical device corresponding to the first light-emitting diode chip for backlight unit 12.
Arrow in Fig. 3 shows the round of light.With reference to Fig. 3, the first light-emitting diode chip for backlight unit 12 on the end face of Multiplexing apparatus 11, be furnished with fluorescent material 13, the bottom surface away from Multiplexing apparatus 11 of the first light-emitting diode chip for backlight unit 12 is capable of reflecting light line (such as being realized by coating reflectance coating).Excited by the light 15 fluorescence excitation material 13(from the second light-emitting diode chip for backlight unit 20 i.e. second time) light that sends is reflected in Multiplexing apparatus 11(Fig. 3 not shown after arriving the bottom surface of the first light emitting diode chip 12) on.
The second time of the fluorescent material 13 caused by the second light emitting diode chip 20 excites the luminous efficiency that improve fluorescent material 13, thus improves the luminous efficiency of secondary light source 200 and the intensity of green glow.
Applicable green glow is sent in order to make secondary light source 200, in one embodiment, first light emitting diode chip 12 and the second light-emitting diode chip for backlight unit 20 issued light line are blue light, the fluorescent material 13 of described secondary light source 200 is the fluorescent material producing gold-tinted or green glow that is stimulated, such as yellow fluorescent powder, green emitting phosphor, and the second light-emitting diode chip for backlight unit 20 surface does not arrange fluorescent material.
Fig. 2 also schematically illustrates the geometric configuration of lighting device 50.With reference to Fig. 2, first light-emitting diode chip for backlight unit 12 is encapsulated on second substrate 22, second light-emitting diode chip for backlight unit 20 to be encapsulated on first substrate 23, and the first light source 100 comprises and is encapsulated into red light-emitting diode chip on the 3rd substrate 24 and blue LED chip.
The substrate of packaging LED chips can be ceramic substrate, or LED chip is directly encapsulated on metal base printed circuit board (MCPCB).
In one embodiment, on the 3rd substrate 24, the number ratio of red light-emitting diode chip and blue LED chip is in the scope of 1/4 to 3/4.Concrete number ratio can regulate according to white balance demand.The red light-emitting diode chip of the first light source 100 and the arrangement of blue LED chip can be cross arrangement, also can arrange with set pattern according to specific design demand.
In one embodiment, first substrate 23, second substrate 22 and the 3rd substrate 24 form three articles of limits of rectangle, and first substrate 23 and the 3rd substrate 24 are arranged in parallel, Multiplexing apparatus 11 is tabular and forms the angular bisector of described second substrate 22 and described 3rd substrate 24.
In the first embodiment of Multiplexing apparatus 11, Multiplexing apparatus 11 comprises optical filter, described optical filter on the surface of described secondary light source, be coated with transmit green and the filter coating of reflect red and blue light, another side is coated with anti-reflection film.As shown in Figure 4, wherein transverse axis is wavelength to its transmission curve, and the longitudinal axis is light transmittance.
In a first embodiment, Red and blue light from the first light source 100 is reflected towards dodging device 7 by the optical filter of Multiplexing apparatus 11, the first light-emitting diode chip for backlight unit 12 in secondary light source 200 sends blue light, fluorescent material 13 is green emitting phosphor, then this blue-light excited green emitting phosphor sends green glow, and reflexed to secondary light source 200 from the blue light of the second light-emitting diode chip for backlight unit 20 by the optical filter of Multiplexing apparatus 11, and cause second time to excite to the fluorescent material 13 in secondary light source 200, secondary light source 200 entirety is made again to send green glow, the optical filter of this twice green light Multiplexing apparatus 11, project simultaneously to dodging device 7 with the Red and blue light from the first light source 100.This fluorescent material 13 can be also yellow fluorescent powder, thus the generation gold-tinted that is stimulated.Gold-tinted reaches the optical filter of Multiplexing apparatus 11, the green light transmission separated, and the ruddiness separated is reflected.
Fig. 5 shows the structural representation of the Multiplexing apparatus 11 according to lighting apparatus 50 of the present invention in the second embodiment.In a second embodiment, Multiplexing apparatus 11 comprises optical filter, described optical filter is coated with reflect blue and the first filter coating 25 of transmit red light and green glow on the first surface, and described optical filter is coated with reflect red and the second filter coating 26 of transmit blue and green glow on a second surface.As shown in the figure, first surface can be towards the surface of secondary light source 200, and second surface can be towards the surface of the first light source 100.
Fig. 6 shows the transmission curve 16 of the first filter coating 25 of the Multiplexing apparatus 11 according to lighting apparatus 50 of the present invention in the second embodiment.Wherein transverse axis is wavelength, and the longitudinal axis is light transmittance.Preferably, the cutoff wavelength of the first filter coating 25 is in the scope of 470nm-510nm; Fig. 7 shows the transmission curve 17 of the second filter coating 26 of the Multiplexing apparatus 11 according to lighting apparatus 50 of the present invention in the second embodiment.Wherein transverse axis is wavelength, and the longitudinal axis is light transmittance.Preferably, the cutoff wavelength of the second filter coating is in the scope of 550nm-620nm.
In a second embodiment, blue light from the first light source 100 is reflected towards dodging device 7 by the first filter coating 25 of the optical filter of Multiplexing apparatus 11, ruddiness from the first light source 100 is reflected towards dodging device 7 by the second filter coating 26 of the optical filter of Multiplexing apparatus 11, fluorescent material 13 is green emitting phosphor, the blue-light excited fluorescent material 13 that the first light-emitting diode chip for backlight unit 12 in secondary light source 200 sends is to send green light, and reflexed to secondary light source 200 from the blue light of the second light-emitting diode chip for backlight unit 20 by the first filter coating 25 of the optical filter of Multiplexing apparatus 11, and cause second time to excite to the fluorescent material 13 in secondary light source 200, secondary light source 200 entirety is made to send twice green glow, first filter coating 25 and the second filter coating 26 of the optical filter of this twice green light Multiplexing apparatus 11, project simultaneously to dodging device 7 with the Red and blue light from the first light source 100.Equally, fluorescent material 13 also can be yellow fluorescent powder, and by blue-light excited generation gold-tinted, it is through the first filter coating 25, and separates green light second filter coating 26 on the second filter coating 26, and the ruddiness separated is reflected and through the first filter coating 25 outgoing.
Fig. 8 shows the structural representation of the Multiplexing apparatus 11 according to lighting apparatus 50 of the present invention in the 3rd embodiment.With reference to Fig. 8, in the third embodiment, Multiplexing apparatus 11 comprises two optical filters 111,112, near secondary light source 200 optical filter 111 on the surface of secondary light source 200, be coated with reflect blue and the 3rd filter coating 27 of transmit red light and green glow, the surface farthest away from the secondary light source dorsad 200 of the optical filter 112 of secondary light source 200 is coated with reflect red and the 4th filter coating 28 of transmit blue and green glow.Preferably, anti-reflection film 29 can be plated on the surface at remaining optical filter, to increase light transmittance.
In the third embodiment, blue light from the first light source 100 is reflected towards dodging device 7 by the 3rd filter coating 27 of the optical filter 111 of Multiplexing apparatus 11, ruddiness from the first light source 100 is reflected towards dodging device 7 by the 4th filter coating 28 of the optical filter 112 of Multiplexing apparatus 11, the blue-light excited fluorescent material 13 that the first light-emitting diode chip for backlight unit 12 in secondary light source 200 sends is to send the light of yellow or green, and reflexed to secondary light source 200 from the blue light of the second light-emitting diode chip for backlight unit 20 by the 3rd filter coating 27 of the optical filter 111 of Multiplexing apparatus 11, and cause second time to excite to the fluorescent material 13 in secondary light source 200, secondary light source 200 entirety is made to send green light, this green light is through the optical filter 111 of Multiplexing apparatus 11 and optical filter 112, project simultaneously to dodging device 7 with the Red and blue light from the first light source 100.
In the above-described embodiments, there is between two optical filters the air gap within scope that width is positioned at 0.1mm-5mm.Certainly, these two optical filters also can be pasted by optical cement and have air gap together and not, its cemented surface not plated film.
In the unshowned embodiment of another accompanying drawing, lighting apparatus 50 also can have different optics geometrical constructions.Wherein, above-mentioned first substrate, second substrate and the 3rd substrate form three articles of limits of rectangle, and first substrate is parallel with described second substrate, simultaneously Multiplexing apparatus 11 forms the angular bisector of second substrate and the 3rd substrate in tabular, and Multiplexing apparatus 11 can reflect green light transmit red light and blue light simultaneously.By the first light source 100 in Fig. 2 and secondary light source 200 switch, the optical property of corresponding change Multiplexing apparatus 11 simultaneously.Layout like this, the optical effect of lighting apparatus 50 is constant, can promote the luminous efficiency of secondary light source and the saturation degree of green glow equally.
Referring again to Fig. 2, lighting apparatus 50 according to the present invention also comprises for by the dodging device 7 of the equalizing light rays from Multiplexing apparatus 11, by the lens 8 of the light focusing after homogenising and pattern segments 9, lens 8 focus light rays in pattern segments 9.
With reference to Fig. 9, when the bandwidth ratio of Multiplexing apparatus 11 is wider, the color saturation of green glow is not high, and color is not bright-coloured, and in addition, its colour gamut is also smaller, particularly the performance of blue green light.Therefore, in a preferred embodiment, when showing saturated green glow or blue green light, lighting apparatus 50 also comprises and is arranged on the transmit green in pattern segments 9 downstream and the downstream filters 10 of reflect red and blue light, for ensureing the saturation degree of green glow according to optical path direction.Preferably, the short-wave band cutoff wavelength of downstream filters 10 can be near 500nm, and long-wave band cutoff wavelength can be near 550nm.
The spectral transmittance of downstream filters 10 also can be as shown in Figure 4.With reference to Fig. 4, its bandwidth is narrower, and to ensure the saturation degree through green glow, its short-wave band part cutoff wavelength is positioned at about 500nm, and the cutoff wavelength of long optical band is positioned at about 550nm.When needing the white light of high brightness, can downstream filters 10 be rotated to outside light path, the white light of high brightness can be obtained like this.
Lighting apparatus 50 according to the present invention has following advantage: the first, due to the raising of green glow brightness, can significantly improve the overall brightness of system; The second, because green glow is wide spectral, when by three primary colours synthesize white light, the defeated property of company of spectrum can be improved, improve the colour rendering of light source; 3rd, although the colour rendering of light source improves, still can be obtained the green glow of high saturation by optical filter, and the colour mixture of RGB system can not be affected; 4th, according to actual needs, the height aobvious finger color gamut systems of the high saturated green glow of wide colour gamut and high-brightness white-light can be obtained.
Figure 10 shows the spectrum comparison diagram according to lighting apparatus 50 of the present invention.Wherein transverse axis is wavelength, and the longitudinal axis is power.Therefrom can find out the beneficial effect that preferred embodiment of setting up downstream filters 10 of the present invention is brought.
Figure 11 shows the white-light spectrum comparison diagram according to lighting apparatus 50 of the present invention.Wherein transverse axis is wavelength, and the longitudinal axis is power.Can see according to the beneficial effect set up the second light-emitting diode chip for backlight unit and bring with the preferred embodiment of the secondary excitation of carrying out fluorescent material of the present invention.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, various improvement can be carried out to it and parts wherein can be replaced with equivalent.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (16)
1. a lighting apparatus (50), comprising:
First light source (100), for sending Red and blue light;
Secondary light source (200), comprise the first light-emitting diode chip for backlight unit (12) and be arranged on the fluorescent material (13) of (12) on described first light-emitting diode chip for backlight unit, the light that described first light-emitting diode chip for backlight unit (12) sends can excite described fluorescent material (13), thus makes described secondary light source (200) send green glow or gold-tinted;
Multiplexing apparatus (11), it is for combining the Red and blue light from described first light source (100) and the green glow from described secondary light source (200) or gold-tinted and export.
2. lighting apparatus according to claim 1 (50), it is characterized in that, also comprise the second light-emitting diode chip for backlight unit (20), the fluorescent material (13) that the light (15) that described second light-emitting diode chip for backlight unit (20) sends is directed into described secondary light source (200) is gone up and excites described fluorescent material (13) luminous.
3. lighting apparatus according to claim 2 (50), it is characterized in that, described first light emitting diode chip (12) and described second light-emitting diode chip for backlight unit (20) issued light line are blue light, and described fluorescent material (13) is gold-tinted and/or green-emitting fluorescent material.
4. lighting apparatus according to claim 2 (50), it is characterized in that, described first light-emitting diode chip for backlight unit (12) on the end face of described Multiplexing apparatus (11), be furnished with described fluorescent material (13), the bottom surface away from described Multiplexing apparatus (11) of described first light-emitting diode chip for backlight unit (12) is capable of reflecting light line, the light that the described fluorescent material (13) excited by the light (15) from described second light-emitting diode chip for backlight unit (20) sends through the bottom reflection of described first light emitting diode chip (12) on described Multiplexing apparatus (11).
5. the lighting apparatus (50) according to any one of claim 2 to 4, it is characterized in that, multiple described first light-emitting diode chip for backlight unit (12) is encapsulated on second substrate (22), multiple described second light-emitting diode chip for backlight unit (20) is encapsulated into (23) on first substrate, and described first light source (100) comprises and is encapsulated into multiple red light-emitting diode chip on the 3rd substrate (24) and multiple blue LED chip.
6. lighting apparatus according to claim 5 (50), it is characterized in that, described first substrate (23), described second substrate (22) and described 3rd substrate (24) form three articles of limits of rectangle, and described first substrate (23) and described 3rd substrate (24) are arranged in parallel, described Multiplexing apparatus (11) is in tabular and form the angular bisector of described second substrate (22) and described 3rd substrate (24).
7. lighting apparatus according to claim 6 (50), is characterized in that, described Multiplexing apparatus comprises optical filter, and at least one side of described optical filter is coated with transmit green and the filter coating of reflect red and blue light.
8. lighting apparatus according to claim 6 (50), it is characterized in that, described Multiplexing apparatus (11) comprises optical filter, described optical filter is coated with reflect blue and first filter coating (25) of transmit red light and green glow on the first surface towards described secondary light source (200), and described optical filter is coated with reflect red and second filter coating (26) of transmit blue and green glow on the second surface towards described first light source (100).
9. lighting apparatus according to claim 8 (50), it is characterized in that, the cutoff wavelength of described first filter coating (25) is in the scope of 470nm-510nm, and the cutoff wavelength of described second filter coating (26) is in the scope of 550nm-620nm.
10. lighting apparatus according to claim 6, it is characterized in that, described Multiplexing apparatus (11) comprises at least two optical filters, near described secondary light source (200) optical filter (111) on the surface of described secondary light source (200), be coated with reflect blue and the 3rd filter coating (27) of transmit red light and green glow, the surface deviating from described secondary light source (200) farthest away from the optical filter (112) of described secondary light source (200) is coated with reflect red and the 4th filter coating (28) of transmit blue and green glow.
11. lighting apparatus according to claim 5, is characterized in that, described Multiplexing apparatus (11) comprises optical filter, and at least one of described optical filter is coated with anti-reflection film on the surface.
12. lighting apparatus according to claim 5, is characterized in that, on described 3rd substrate (24), the number ratio of described red light-emitting diode chip and described blue LED chip is in the scope of 1/4 to 3/4.
13. lighting apparatus according to claim 5, it is characterized in that, described first substrate (23), described second substrate and described 3rd substrate form three articles of limits of rectangle, and described first substrate (23) is parallel with described second substrate, described Multiplexing apparatus (11) is in tabular and form the angular bisector of described second substrate and described 3rd substrate, and described Multiplexing apparatus (11) can reflect green light transmit red light and blue light.
14. lighting apparatus according to claim 5, it is characterized in that, described second light-emitting diode chip for backlight unit (20) is furnished with receipts electro-optical device, for by the collimate light of described second light-emitting diode chip for backlight unit (20) in set dispersion angle.
15. lighting apparatus according to any one of claim 1 to 4, it is characterized in that, also comprise for will from the dodging device (7) of the equalizing light rays of described Multiplexing apparatus (11), by the lens (8) of the light focusing after homogenising and pattern segments (9), described lens (8) by described light focusing in described pattern segments (9).
16. lighting apparatus according to claim 15, it is characterized in that, also comprise and be arranged on the transmit green in described pattern segments (9) light path front and the downstream filters (10) of reflect red and blue light, for ensureing the saturation degree of green glow according to optical path direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310577015.XA CN104654052A (en) | 2013-11-18 | 2013-11-18 | Illuminating equipment |
| PCT/CN2014/090408 WO2015070719A1 (en) | 2013-11-18 | 2014-11-06 | Illumination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310577015.XA CN104654052A (en) | 2013-11-18 | 2013-11-18 | Illuminating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104654052A true CN104654052A (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310577015.XA Pending CN104654052A (en) | 2013-11-18 | 2013-11-18 | Illuminating equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104654052A (en) |
| WO (1) | WO2015070719A1 (en) |
Cited By (5)
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| WO2017092668A1 (en) * | 2015-12-01 | 2017-06-08 | 深圳市光峰光电技术有限公司 | Illumination system |
| CN108019634A (en) * | 2017-10-25 | 2018-05-11 | 广州市欧玛灯光设备有限公司 | A kind of white light LED lamp means of illumination and LED light device |
| WO2020019713A1 (en) * | 2018-07-25 | 2020-01-30 | 深圳市绎立锐光科技开发有限公司 | Led lighting device |
| WO2020114199A1 (en) * | 2018-12-04 | 2020-06-11 | 深圳市绎立锐光科技开发有限公司 | Illumination light source and vehicle lamp |
| WO2021249511A1 (en) * | 2020-06-12 | 2021-12-16 | 深圳光峰科技股份有限公司 | Projection display system |
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| CN116154599B (en) * | 2023-04-23 | 2023-12-29 | 中国工程物理研究院激光聚变研究中心 | Compact spectrum synthesizer |
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| WO2015070719A1 (en) | 2015-05-21 |
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Application publication date: 20150527 |