CN102662301B - Light source system and related projection system - Google Patents
Light source system and related projection system Download PDFInfo
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Abstract
The embodiment of the invention discloses a light source system and a related projection system; the light source system comprises a light-emitting device; the light-emitting device comprises a light-emitting diode (LED) array, a laser source, a wavelength conversion device and a driving device; the LED array is used for generating first light; the laser source is used for generating laser; the wavelength conversion device comprises a wavelength conversion layer which is used for absorbing laser so as to generate stimulated light; the wavelength conversion device emits at least partial light of the stimulated light, or the mixed light of the at least partial light of the stimulated light and at least partial light of the laser which is not absorbed; the driving device is used for driving the wavelength conversion device, so that light spots which are formed by the laser on the wavelength conversion layer act on the wavelength conversion layer along a preset path; and the first light and the emitted light of the wavelength conversion device are combined into a light beam in the way of geometric light combination. The size and the cost can be effectively controlled while the light source system realizes higher output light flux.
Description
Technical field
The present invention relates to illumination and display technique field, particularly relate to a kind of light-source system and relevant projecting system.
Background technology
Light emitting diode (LED, Light Emitting Diode) is the semiconductor solid-state optical source that directly electricity can be converted into visible ray, and relative conventional light source has that the life-span is long, light efficiency is high, the radiationless advantage with low-power consumption.Along with the aggravation perplexing the global problem such as energy shortage, climate warming in recent years, Semiconductor LED light source is more and more universal in the application of all trades and professions, has greatly the trend replacing conventional light source.
For current technology, in normal operation, the highlight flux of single led chip (1mm × 1mm specification) is no more than 300 lumens (lm).Higher light-source system is exported for ask for something luminous flux, can be realized by LED array.But, export to the luminous flux asking light-source system to reach conventional halogen lamp (1200W-1500W), then require that the LED chip number of LED array is very huge, cause the volume of light-source system very large and some application scenario cannot be applicable to.Such as, adopt the stage lamp of LED array to export to the luminous flux reaching conventional halogen lamp (1200W-1500W), then the volume of stage lamp can accept scope far beyond user, thus cannot be applied.
In prior art, laser diode (LD, Laser Diode) has and exceeds a lot of brightness than LED, therefore adopts the light-source system of LD also can be effectively controlled reaching volume while high light flux exports.But at present in the LD of shades of colour, even the cost of the most cheap blue LD also exceeds much than the cost of LED, and green LD exceeds much than blue LD cost with the cost of red LD.And in the emergent light of existing light-source system, often belong to again green more weak and need to be improved with red color components, export so substitute LED according to LD with the luminous flux improving light-source system, then often need to adopt green and red LD that price is expensive especially, cause the cost of light-source system to increase substantially.Therefore, prior art, when making light-source system reach higher luminous flux output, effectively cannot control volume and the cost of light-source system simultaneously.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of light-source system and the relevant projecting system that while reaching higher luminous flux output, more effectively can control volume and cost.
The embodiment of the present invention provides a kind of light-source system, it is characterized in that, comprises light-emitting device, and this light-emitting device comprises:
LED array, for generation of the first light;
LASER Light Source, for generation of laser;
Wavelength converter, comprises for absorbing laser to produce the wavelength conversion layer of Stimulated Light, at least part of light of this Wavelength converter outgoing Stimulated Light, or the mixed light of at least part of light of this Stimulated Light and at least part of light of unabsorbed laser;
Drive unit, for driving Wavelength converter, the hot spot formed on wavelength conversion layer to make laser acts on this wavelength conversion layer along predefined paths;
Further, the mode that the emergent light of the first light and Wavelength converter closes light with geometry is combined into a branch of conjunction light.
The embodiment of the present invention also provides a kind of optical projection system, it is characterized in that, comprises above-mentioned light-source system.
Compared with prior art, the present invention includes following beneficial effect:
A lot of brightness is exceeded than LED because laser has, therefore the present invention adopts laser excitation wavelength conversion layer to obtain Stimulated Light, utilize the luminescence of the mixed light of this Stimulated Light or this Stimulated Light and unabsorbed laser to LED array to supplement, light-source system can be made to reach volume while higher luminous flux exports and be effectively controlled; Simultaneously, the Stimulated Light that can be obtained by more cheap ultraviolet or blue laser excitation wavelength conversion layer improves green or the red color components of light-source system, thus can avoid using expensive green LD and red LD directly to improve green and the red color components of light-source system, thus more effectively can control the cost of light-source system.
Accompanying drawing explanation
Fig. 1 is the side view of an embodiment of light-source system in the embodiment of the present invention;
Fig. 2 a is the side view of another embodiment of light-source system in the embodiment of the present invention;
Fig. 2 b is the front view of Fig. 2 a illustrated embodiment medium wavelength conversion equipment;
Fig. 3 is the side view of another embodiment of light-source system in the embodiment of the present invention;
Fig. 4 is the side view of another embodiment of light-source system in the embodiment of the present invention;
Fig. 5 is the side view of another embodiment of light-source system in the embodiment of the present invention;
Fig. 6 a is the side view of another embodiment of light-source system in the embodiment of the present invention;
Fig. 6 b is the schematic diagram at the back side of the light-emitting area of LED array in Fig. 6 a illustrated embodiment;
Fig. 7 is the side view of another embodiment of light-source system in the embodiment of the present invention.
Embodiment
For the purpose of quoting and know, hereafter and being described as follows of the technical term used in accompanying drawing:
Wavelength closes light, refers to the difference utilizing optical wavelength, two-beam is combined into light beam.
Geometry closes light, refers to the difference utilizing locus, two-beam is combined into light beam.
Invention thinking of the present invention comprises: exceed a lot of brightness because laser has than LED, therefore the present invention adopts the wavelength conversion layer of laser excitation wavelength conversion equipment to obtain Stimulated Light, and make at least part of light of this Stimulated Light of Wavelength converter outgoing, or the mixed light of at least part of light of this Stimulated Light and at least part of light of unabsorbed laser, and geometry is carried out in the luminescence of the emergent light of Wavelength converter and LED array close light, to supplement the luminescence of LED array, thus volume is effectively controlled while making light-source system reach higher luminous flux output.Simultaneously, the Stimulated Light that can also be obtained by more cheap blue laser excitation wavelength conversion layer improves green or the red color components of light-source system, thus avoid using expensive green LD and red LD directly to improve green and the red color components of light-source system, thus more effectively can control the cost of light source.
Below in conjunction with drawings and embodiments, the embodiment of the present invention is described in detail.
Embodiment one
Refer to Fig. 1, Fig. 1 is the side view of an embodiment of light-source system in the embodiment of the present invention.As shown in Figure 1, light-source system 100 comprises light-emitting device, and this light-emitting device comprises LED array 110, LASER Light Source 120, Wavelength converter 130 and drive unit 140.
LED array 110 comprises substrate 111 and the multiple LED chips 112 be arranged on substrate 111.Substrate 111 is preferably copper base, and LED chip can adopt welding, bonding or other connected mode is fixed on substrate 111.LED chip array can be matrix arrangement, line strip arrangement or circular concentric arrangement etc., and it can need and matching design according to the difference of application.LED chip 112 is for generation of the first light L1.
LASER Light Source 120 can be single laser diode, also can for the laser array be made up of two or more laser diode.LASER Light Source 120 is for generation of laser L2.
Wavelength converter 130 comprises for absorbing laser L2 to produce the wavelength conversion layer of Stimulated Light.Wavelength conversion layer comprises for absorbing laser L2 to produce the material for transformation of wave length of Stimulated Light.The most frequently used material for transformation of wave length is fluorescent powder, such as YAG fluorescent powder, and it can absorb blue light and the Stimulated Light of stimulated emission yellow.Material for transformation of wave length may be also the material that quantum dot, fluorescent dye etc. have wavelength conversion capability, is not limited to fluorescent powder.Wavelength converter 130 is at least part of light of outgoing Stimulated Light, or the mixed light of at least part of light of this Stimulated Light and at least part of light of unabsorbed laser; Can comprise by arranging Wavelength converter the light that the optical device such as optical filter make Wavelength converter outgoing needs, this is known technology, does not repeat herein.Further, the mode that the first light L1 that the emergent light L3 of Wavelength converter 130 and LED array 110 produce closes light with geometry is combined into a branch of conjunction light.
Drive unit 140 moves for driving Wavelength converter 130, the hot spot formed on this wavelength conversion layer to make laser L2 acts on this wavelength conversion layer along predefined paths, with the problem avoiding laser long duration of action to raise in this wavelength conversion layer temperature that the wavelength conversion layer of same position causes.Particularly, in the present embodiment, drive unit 140 rotates for driving Wavelength converter 130, and the hot spot formed on this wavelength conversion layer to make laser L2 acts on this wavelength conversion layer along predetermined circular path.Preferably, Wavelength converter 130 is in the form of annular discs, and wavelength conversion layer is in the ring-type concentric with this disk, and drive unit 140 is cylindrical motor, and drive unit 140 and Wavelength converter 130 are coaxially fixed.
Application the present embodiment, light-source system can be made to reach while higher luminous flux exports and more effectively to control volume and cost, make a concrete analysis of as follows: exceed a lot brightness because laser has than LED, therefore the present embodiment adopts laser excitation wavelength conversion layer to obtain Stimulated Light, utilize the luminescence of the mixed light of this Stimulated Light or this Stimulated Light and unabsorbed laser to LED array to supplement, light-source system can be made to reach volume while higher luminous flux exports and be effectively controlled; Simultaneously, the Stimulated Light that can be obtained by more cheap ultraviolet or blue laser excitation wavelength conversion layer improves green or the red color components of light-source system, thus can avoid using expensive green LD and red LD directly to improve green and the red color components of light-source system, thus more effectively can control the cost of light-source system.
Concrete example, the first light L1 is green glow, and laser L2 is blue light; The material for transformation of wave length of wavelength conversion layer is that absorbing laser L2 is to produce the yellow fluorescent powder of gold-tinted; And, Wavelength converter 130 also comprises optical filter (not shown), be positioned at the light emission side of material for transformation of wave length, for the green glow section part of the gold-tinted that transmission peak wavelength transition material produces, and filter out the other parts of this gold-tinted and unabsorbed blue laser, therefore Wavelength converter 130 only outgoing green glow L3, for the green color components of supplementary light-source system, thus while making light-source system reach higher luminous flux output, volume is effectively controlled.Meanwhile, because the Stimulated Light obtained by more cheap blue laser excitation wavelength conversion layer improves the green components of light-source system, thus can avoid using expensive green LD, more effectively control the cost of light-source system.
It is easily understood that produce in the example of green glow at LED array 110, Wavelength converter also may be used for other color of light composition improving light-source system.Such as, in other embodiments, above-mentioned optical filter also may be used for transmission gold-tinted, and filters out unabsorbed blue laser, thus makes all gold-tinteds of Wavelength converter 130 outgoing, to improve the yellow component of light-source system; Or optical filter also may be used for the mixed light of the part light of transmission gold-tinted and the part light of blue light, and filter out the residue light of this mixed light, thus make this part light of Wavelength converter 130 outgoing.Wavelength converter 130 also can not arrange the white light of optical filter and all gold-tinteds of outgoing and unabsorbed blue light.
It is easily understood that in other embodiments, laser L2 also can be other laser, such as ultraviolet light or black light.When using ultraviolet light or near ultraviolet excitation wavelength conversion layer to obtain Stimulated Light, preferably, a Wavelength converter outgoing Stimulated Light, enters human eye to avoid ultraviolet light or black light.
Below the example LED array producing green glow being carried out to luminous flux raising is only listed, it is easily understood that, in other embodiments, also can utilize the emergent light of Wavelength converter under laser action, luminous flux raising is carried out to the LED array producing other color of light such as blue light, ruddiness, white light.Such as, the ruddiness comprising Wavelength converter outgoing under blue laser effect of red light fluorescent powder is utilized to carry out luminous flux raising to red LED array.
Because current blue LD is the most cheap in all LD, for making structure comparatively simple, blue LD can be preferably used directly to improve the blue light ingredient of light-source system, and the emergent light of Wavelength converter is mainly used in supplementing the color of light composition being greater than blue light wavelength, therefore preferably, the region that the spectrum of Stimulated Light that wavelength conversion layer produces has at least a part to be positioned at wavelength to be greater than 460nm, such as gold-tinted or green glow.
In addition, what deserves to be explained is, LED chip 112 can be the LED directly producing the first light; Also can be the LED that can produce exciting light, and the surface of this LED cover the material for transformation of wave length that this exciting light can be converted to the first light.For example, LED chip can be the LED directly producing green glow, also can be the surperficial blue led covering green light fluorescent powder.
Further, light is closed in order to the first light L1 making the outgoing luminous energy of Wavelength converter more effectively produce with LED array 110 carries out geometry, Wavelength converter 130 and LED array 110 be arranged in parallel, and the exit positions of Wavelength converter 130 and LED array 110 should be as far as possible close.
Further, in the present embodiment, the light-emitting device of light-source system 100 can also comprise control device (not shown), for controlling open and close and/or the luminous intensity of LASER Light Source 120, thus make Wavelength converter can selectably provide emergent light L3, or varying strength or different colours emergent light L3 are provided as required, such light-source system more can adapt to different application scenarios.
The present embodiment is that the geometry realizing the emergent light L3 of the first light L1 and Wavelength converter with the simplest structure closes light, below by adopting other structure to realize, embodiment that this geometry closes light is described in detail.
Embodiment two
Refer to the side view that Fig. 2 a and Fig. 2 b, Fig. 2 a is another embodiment of light-source system in the embodiment of the present invention; Fig. 2 b is the front view of Fig. 2 a illustrated embodiment medium wavelength conversion equipment.As shown in Figure 2, the light-emitting device of light-source system 200 comprises LED array 210, LASER Light Source 220, Wavelength converter 230 and drive unit 240.LED array 210 comprises substrate 211 and multiple LED chip 212.
The present embodiment and difference part embodiment illustrated in fig. 1 comprise:
(1) LED array 210 also comprises light hole 214, Wavelength converter 230 is located at the side, the back side of the light-emitting area of LED array 210, the emergent light L3 of Wavelength converter be incident in the light-emitting area of this LED array the back side and through this light hole 214 to be combined into a branch of conjunction light with the first light L1.
(2) LED array 210 also comprises multiple collimation lenses 213 corresponding with multiple LED chip 212 respectively, collimates for the first light produced LED chip, thus reduces the dispersion angle of light-source system emergent light.Light-source system 200 also comprises another collimation lens 250, for collimating the emergent light of Wavelength converter 230, is incident to light hole 214 as far as possible to make the emergent light of Wavelength converter.For reducing light-source system volume, light hole 214 should be little as far as possible, if can allow the emergent light of collimation lens 250 through.
(3) wavelength conversion layer 231 of Wavelength converter 230 comprises the first subregion 231a and the second subregion 231b, and two subregions distribute along the circumference of Wavelength converter.First subregion is provided with material for transformation of wave length, and the second subregion is provided with scattering material.Under the driving of drive unit 240, the first subregion 231a and the second subregion 231b sequentially enters the irradiation area of laser.When the first subregion 231a enters the irradiation area of laser L2, at least part of light of Wavelength converter outgoing Stimulated Light, or the mixed light of at least part of light of this Stimulated Light and at least part of light of unabsorbed laser; When the second subregion 231b enters the irradiation area of laser, at least part of light of this laser of Wavelength converter outgoing.
Embodiment three
Refer to Fig. 3, Fig. 3 is the side view of another embodiment of light-source system in the embodiment of the present invention.As shown in Figure 3, the light-emitting device of light-source system 300 comprises LED array 310, LASER Light Source 320, Wavelength converter 330, drive unit 340 and collimation lens 350.LED array 310 comprises substrate 311, multiple LED chip 312 and collimation lens 313.
The difference part of the present embodiment and Fig. 2 a illustrated embodiment comprises:
The LED array of light-source system 300 does not comprise light hole, but the light-emitting device of light-source system 300 also comprises reflection unit 360, be positioned at the side of the light-emitting area of LED array, the emergent light L3 of Wavelength converter 330 is incident in this reflection unit through collimation lens 350, and by the reflection of this reflection unit to be combined into a branch of conjunction light with the first light L1.For reducing light-source system volume, reflection unit 360 should be little as far as possible, if can allow the emergent light of collimation lens 350 through.Reflection unit 360 can be catoptron, prism or optical filter or other, every optical device that can change the emergent light light path of Wavelength converter 330, does not enumerate herein.
Preferably, Wavelength converter 330 is arranged with LED array 310 is mutually vertical, and all has the angle of 45 degree with reflection unit 360.
Embodiment four
Refer to Fig. 4, Fig. 4 is the side view of another embodiment of light-source system in the embodiment of the present invention.As shown in Figure 4, the light-emitting device of light-source system 400 comprises LED array 410, LASER Light Source 420, Wavelength converter 430, drive unit 440 and collimation lens 450.LED array 410 comprises substrate 411, multiple LED chip 412, multiple collimation lens 413 and light hole 414.
The difference part of the present embodiment and Fig. 2 a illustrated embodiment comprises:
Wavelength converter 430 is set to reflective; The light-emitting device of light-source system 400 also comprises light path discriminating device 470, and for guiding laser L2 to be incident to Wavelength converter, and at least part of light outgoing of guide wavelength conversion equipment emergent light L3 is to be combined into a branch of conjunction light with the first light L1.In the present embodiment, light path discriminating device 470 is specially reflects laser and the light splitting optical filter of Stimulated Light in transmission peak wavelength conversion equipment emergent light.Laser L2 is incident to Wavelength converter 430 through collimation lens 450 after light splitting optical filter 470 reflects, the emergent light L3 of Wavelength converter 430 to light splitting optical filter 470, closes light from light hole 414 outgoing and the first light L1 geometry through collimation lens 450 outgoing after light splitting filter transmission.
The present embodiment adopts reflective Wavelength converter 430, and relative the various embodiments described above have the more compact advantage of structure.
Embodiment five
Refer to Fig. 5, Fig. 5 is the side view of another embodiment of light-source system in the embodiment of the present invention.As shown in Figure 5, the light-emitting device of light-source system 500 comprises LED array 510, LASER Light Source 520, Wavelength converter 530, drive unit 540, collimation lens 550 and light path discriminating device 570.LED array 510 comprises substrate 511, multiple LED chip 512, multiple collimation lens 513 and light hole 514.
The present embodiment and difference part embodiment illustrated in fig. 4 comprise:
Light path discriminating device 570 is specially the cambered surface reflection unit of the reflecting surface comprising light hole and light hole outside.Laser L2 is incident on Wavelength converter 530 through light hole, the major part of the emergent light L3 of Wavelength converter 530 is by the reflective surface of cambered surface reflection unit, collect the emergent light of collimation for light-source system through collimation lens 550 again, fraction leaks from light hole.The present embodiment cambered surface reflection unit 570 substitutes light splitting optical filter, has lower-cost advantage.
Preferably, cambered surface reflection unit 570 is a part for semielliptical shape or semielliptical shape, and the entrance positions of Wavelength converter 530 is arranged at a focus of this ellipsoid, thus most of light of Wavelength converter 530 outgoing through the reflective surface of cambered surface reflection unit to another focus of this ellipsoid; Or, cambered surface reflection unit 760 is in semisphere or a hemispheric part, and the entrance positions of Wavelength converter 530 is arranged at this spherical centre of sphere close a bit, thus most of light of Wavelength converter 530 outgoing is through reflective surface another point extremely with this about centre of sphere symmetry of cambered surface reflection unit, so that carry out light collection.
Embodiment six
Refer to the side view that Fig. 6 a and Fig. 6 b, Fig. 6 a is another embodiment of light-source system in the embodiment of the present invention; Fig. 6 b is the schematic diagram at the back side of the light-emitting area of LED array in Fig. 6 a illustrated embodiment.As shown in Figure 6 a, the light-emitting device of light-source system 600 comprises LED array 610, LASER Light Source 620, Wavelength converter 630, drive unit 640, collimation lens 650 and light path discriminating device 670.LED array 610 comprises substrate 611, multiple LED chip 612, multiple collimation lens 613 and light hole 614.
The present embodiment and difference part embodiment illustrated in fig. 4 comprise:
(1) light-emitting device also comprises collimation lens 680, catoptron 690, and collimation lens 680 is for being collimated to catoptron 690 to the laser of LASER Light Source 620 outgoing, and this laser reflexes to light path discriminating device 670 through catoptron 690.
(2) light-source system 600 comprises three color of light passages, and one of them color of light passage comprises above-mentioned light-emitting device.Another two color of light passages comprise the light source for generation of second, third light being different from the first light respectively, this light source can comprise LED, LD or use LED or LD excitation wavelength transition material to produce the luminescent device of Stimulated Light, is specially red LED array 6110 and blue LED arrays 6120 in the present embodiment.Light-source system also comprises in criss-cross wavelength optics, this wavelength optics specifically comprises two dichroic sheets 6130 and 6140, and the mode that this wavelength optics is used for each bundle light from each color of light passage closes light with wavelength is combined into a branch of conjunction light.
(3) light-source system 600 also comprises fly's-eye lens 6150 and condenser lens 6160, fly's-eye lens 6150 is for carrying out shaping and Homogenization Treatments to the emergent light of wavelength optics, and condenser lens 6160 is for collecting the emergent light of fly's-eye lens 6150 and focusing on.
For ease of understanding the present embodiment, illustrate the principle of work of the present embodiment light-source system below:
Concrete example, LED array 610 produces green glow, and LASER Light Source 620 produces blue light, and this blue light reflects through light path discriminating device 670 and converges to Wavelength converter through lens 650.Wavelength converter 630 comprises for absorbing blue light and producing yellow fluorescent powder and the optical filter of gold-tinted, and after this yellow fluorescent powder absorbs blue light, the gold-tinted of outgoing is filtered into green glow by this optical filter, therefore Wavelength converter outgoing green glow and unabsorbed blue light.Green light transmission light path discriminating device 670 in the emergent light of Wavelength converter 630 also passes light hole 614, and it is a branch of green glow that the green glow geometry produced with LED array 610 closes light, as the emergent light of the color of light passage at light-emitting device place.Two other color of light passage is outgoing ruddiness and blue light respectively, to three passages, the ruddiness of outgoing, green glow and blue light wavelength close light to the wavelength optics be made up of dichroic sheet 6130 and 6140 is respectively a branch of white light, this white light after fly's-eye lens 6150 shaping and Homogenization Treatments, then is converged to a bit by condenser lens 6160.
Light-source system also can comprise the color of light passage of more than two or four.It is easily understood that, above-mentioned light-emitting device also can be applied in two or more color of light passage, such as in the color of light passage at red LED array 6110 place, also can add a light-emitting device, this light-emitting device can utilize laser excitation wavelength conversion equipment with outgoing ruddiness.
In addition, preferably, as shown in Figure 6 b, light hole 614 outside at the back side of the light-emitting area of LED array 610 is provided with heat pipe 6100, relative to arranging for radiating fin, this structure can reduce the length of light-source system, and is conducive to leaving the enough spaces of Wavelength converter 630 for.
There are the following problems for Fig. 6 a illustrated embodiment, if Wavelength converter 630 ejecting white light, the redness of this white light and blue portion can not as the emergent lights of light-source system using being filtered out by wavelength optics.For this reason, the invention provides embodiment illustrated in fig. 7.
Embodiment seven
Refer to Fig. 7, Fig. 7 is the side view of another embodiment of light-source system in the embodiment of the present invention.As shown in Figure 7, light-source system 700 comprises three color of light passages, and the light-emitting device of a color of light passage comprises LED array 710, LASER Light Source 720, Wavelength converter 730, drive unit 740, collimation lens 750 and 780, catoptron 790a and 790b; Another two color of light passages comprise LED array 7110 and 7120 respectively.Light-source system also comprises fly's-eye lens 7150 and condenser lens 7160.For ease of describing, below the color of light passage at light-emitting device place is called the first color of light passage, the color of light passage at LED array 7110 and 7120 place is called second, third color of light passage.
The difference part of the present embodiment and Fig. 6 a illustrated embodiment comprises:
(1) Wavelength converter adopts transmission-type, the laser that LASER Light Source 720 produces reflexes to Wavelength converter 730 through catoptron 790a and 790b successively, the emergent light of Wavelength converter after collimation lens 750 collimation through the light hole of LED array 710.
(2) light-source system 700 comprises in criss-cross light-integrating subassembly, and this light-integrating subassembly comprises the guide portion 7140 being positioned at its center and closes light portion 7130 with the wavelength being positioned at guide portion 7140 outside, and this light-integrating subassembly instead of the wavelength optics in Fig. 6 a.Wavelength closes light portion 7130 and merges into first via light for the mode of closing light with wavelength to the emergent light of the LED array 710 in light-emitting device and the part emergent light of second, third color of light passage; Guide portion 7140 is for merging into the emergent light of light-source system in the mode that geometry closes light by the emergent light of the Wavelength converter 730 in light-emitting device and first via light, and the residue emergent light outgoing hindering second, third color of light passage is the emergent light of light-source system.
Particularly, in the present embodiment, light-integrating subassembly comprises the dichroic sheet of band light hole 7140, and this dichroic sheet comprises this light hole 7140 and is positioned at the filter area 7130 of this light hole outside, namely the guide portion of light-integrating subassembly is this light hole, and it is this filter area that wavelength closes light portion.
For ease of understanding the present embodiment, illustrate the principle of work of the present embodiment light-source system below:
Concrete example, LED array 710 produces green glow, LASER Light Source 720 produces blue light, Wavelength converter 730 comprises for absorbing blue light and producing the yellow fluorescent powder of gold-tinted, the white light that Wavelength converter outgoing is made up of gold-tinted and unabsorbed blue light, this white light is through the light hole of LED array 710.The ruddiness of outgoing and most of light of blue light are first via white light through the filter area 7130 wavelength conjunction light of light-integrating subassembly respectively for the green glow of LED array 710 outgoing, LED array 7110 and 7120.The white light of Wavelength converter 730 outgoing, through after the light hole of LED array 710, through the light hole 7140 of light-integrating subassembly, to merge into the emergent light of light-source system with first via white light in the mode that geometry closes light.The LED array 7110 and 7120 respectively ruddiness of outgoing and the fraction light of blue light leaks through the light hole 7140 of light-integrating subassembly and can not outgoing be the emergent light of light-source system.
Relative to Fig. 6 a illustrated embodiment, the present embodiment makes the white light of Wavelength converter outgoing outgoing be the emergent light of light-source system by light-integrating subassembly, and does not have part light and be filtered, and therefore has the advantage that the larger brightness of luminous flux is higher.
In other embodiments, light-integrating subassembly also can comprise the dichroic sheet of band reflection unit, this dichroic sheet comprises this reflection unit and is positioned at the filter area of this reflection unit outside, and namely the guide portion of light-integrating subassembly is this reflection unit, and it is this filter area that wavelength closes light portion.This is the alternative embodiment embodiment illustrated in fig. 7 that those skilled in the art can realize, and is not described further herein.
It is worth mentioning that, the non-essential obstruction second of guide portion 7140, the residue emergent light outgoing of the 3rd color of light passage is the emergent light of light-source system, such as, when guide portion 7140 is polaroid, can by the emergent light of Wavelength converter and second, the residue emergent light of the 3rd color of light passage is set to polarized light, now guide portion 7140 can the emergent light and second of guide wavelength conversion equipment, the mode that the residue emergent light of the 3rd color of light passage closes light with polarization merges into the second road light, this the second road light and first via light merge into the emergent light of light-source system in the mode that geometry closes light.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
The embodiment of the present invention also provides a kind of optical projection system, comprises light-source system, and this light-source system can have the structure and fuction in the various embodiments described above.This optical projection system can adopt various shadow casting technique, such as liquid crystal display (LCD, Liquid Crystal Display) shadow casting technique, digital light path processor (DLP, Digital Light Processor) shadow casting technique.In addition, above-mentioned light-source system also can be applied to illuminator, such as stage lighting illumination.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (14)
1. a light-source system, is characterized in that, comprises light-emitting device, and this light-emitting device comprises:
LED array, for generation of the first light;
LASER Light Source, for generation of laser;
Wavelength converter, comprise for absorbing described laser to produce the wavelength conversion layer of Stimulated Light, at least part of light of Stimulated Light described in this Wavelength converter outgoing, or the mixed light of at least part of light of at least part of light of this Stimulated Light and unabsorbed described laser;
Further, the mode that the emergent light of the first light and described Wavelength converter closes light with geometry is combined into a branch of conjunction light;
Described light-emitting device also comprises control device, for controlling open and close and/or the luminous intensity of described LASER Light Source.
2. light-source system according to claim 1, it is characterized in that, this light-source system also comprises: drive unit, and for driving described Wavelength converter, the hot spot formed on described wavelength conversion layer to make described laser acts on this wavelength conversion layer along predefined paths.
3. light-source system according to claim 1, is characterized in that: described LED array comprises light hole, the emergent light of described Wavelength converter be incident in the light-emitting area of this LED array the back side and through this light hole to be combined into a branch of conjunction light with the first light.
4. light-source system according to claim 3, is characterized in that: the described light hole outside at the back side of the light-emitting area of described LED array is provided with heat pipe.
5. light-source system according to claim 1, it is characterized in that: described light-emitting device also comprises reflection unit, be positioned at the side of the light-emitting area of LED array, the emergent light of described Wavelength converter reflects through this reflection unit to be combined into a branch of conjunction light with the first light.
6. light-source system according to claim 1, is characterized in that: described Wavelength converter is set to reflective; Described light-emitting device also comprises light path discriminating device, for guiding described laser to be incident to described Wavelength converter, and guides at least part of light outgoing of described Wavelength converter emergent light to be combined into a branch of conjunction light with the first light.
7. light-source system according to claim 1, is characterized in that: this light-source system comprises at least two color of light passages and wavelength optics; At least one optical channel in described at least two color of light passages comprises described light-emitting device, and at least one optical channel comprises the light source for generation of the second light; The mode that described wavelength optics is used for each bundle light from described at least two color of light passages closes light with wavelength is combined into a branch of conjunction light.
8. light-source system according to claim 1, is characterized in that: this light-source system comprises the first color of light passage, the second color of light passage and light-integrating subassembly; First color of light passage comprises described light-emitting device, and the second color of light passage comprises the light source for generation of the second light;
Described light-integrating subassembly comprises wavelength and closes light portion and guide portion, and this wavelength closes light portion and is used for merging into first via light to the mode that the emergent light of the LED array in described light-emitting device and part second light of the second color of light passage close light with wavelength; This guide portion is used for the emergent light emergent light of the Wavelength converter in described light-emitting device and described first via light being merged into light-source system in the mode that geometry closes light.
9. light-source system according to claim 8, is characterized in that: described guide portion is also for hindering residue second beam projecting of the second color of light passage to be the emergent light of light-source system.
10. light-source system according to claim 9, it is characterized in that: described light-integrating subassembly comprises the dichroic sheet of band light hole, this dichroic sheet comprises this light hole and is positioned at the filter area of this light hole outside, and described guide portion is this light hole, and it is this filter area that described wavelength closes light portion.
11. light-source systems according to claim 9, it is characterized in that: described light-integrating subassembly comprises the dichroic sheet of band reflection unit, this dichroic sheet comprises this reflection unit and is positioned at the filter area of this reflection unit outside, described guide portion is this reflection unit, and it is this filter area that described wavelength closes light portion.
12. light-source systems according to any one of claim 1 to 11, is characterized in that: described laser is blue light or ultraviolet light, the region that the spectrum of described Stimulated Light has at least a part to be positioned at wavelength to be greater than 460nm.
13. light-source systems according to claim 12, is characterized in that: described laser is blue light, and described Stimulated Light is gold-tinted or green glow.
14. 1 kinds of optical projection systems, is characterized in that, comprise the light-source system according to any one of claim 1 to 13.
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| CN201210123211.5A CN102662301B (en) | 2012-03-11 | 2012-04-24 | Light source system and related projection system |
| CN201510251472.9A CN104865783B (en) | 2012-04-24 | 2012-04-24 | Light source system and related projection system |
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| CN201210062037.8 | 2012-03-11 | ||
| CN2012100620378 | 2012-03-11 | ||
| CN201210062037 | 2012-03-11 | ||
| CN201210123211.5A CN102662301B (en) | 2012-03-11 | 2012-04-24 | Light source system and related projection system |
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| CN104020633B (en) * | 2013-02-28 | 2015-12-09 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and relevant projecting system |
| CN103399453A (en) * | 2013-08-23 | 2013-11-20 | 中国华录集团有限公司 | Light source device of projector, capable of enhancing brightness |
| CN106162116B (en) * | 2015-04-09 | 2018-03-20 | 深圳市光峰光电技术有限公司 | Projection display system and its control method |
| DE102015106312A1 (en) * | 2015-04-24 | 2016-10-27 | Osram Gmbh | Lighting device with semiconductor primary light sources and at least one phosphor body |
| CN106371272B (en) * | 2015-07-20 | 2019-04-23 | 深圳光峰科技股份有限公司 | The control system of light combination and projector |
| CN205350946U (en) * | 2015-12-16 | 2016-06-29 | 深圳市绎立锐光科技开发有限公司 | Light source system and lighting system |
| CN107228301B (en) * | 2017-06-08 | 2021-05-07 | 广州市浩洋电子股份有限公司 | Stage lamp optical system containing light beam and pattern effect and light projection device |
| CN109143744B (en) * | 2017-06-15 | 2021-06-29 | 深圳光峰科技股份有限公司 | Light source system and projection system using same |
| US10837619B2 (en) | 2018-03-20 | 2020-11-17 | Ledengin, Inc. | Optical system for multi-emitter LED-based lighting devices |
| CN110748805B (en) * | 2018-07-24 | 2023-08-11 | 深圳市绎立锐光科技开发有限公司 | Lighting source system |
| CN110906268A (en) * | 2018-09-14 | 2020-03-24 | 深圳市绎立锐光科技开发有限公司 | Car light |
| JP7314778B2 (en) * | 2019-11-25 | 2023-07-26 | セイコーエプソン株式会社 | Light source device and projector |
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