CN103424969A - Light source system - Google Patents
Light source system Download PDFInfo
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- CN103424969A CN103424969A CN2012101583427A CN201210158342A CN103424969A CN 103424969 A CN103424969 A CN 103424969A CN 2012101583427 A CN2012101583427 A CN 2012101583427A CN 201210158342 A CN201210158342 A CN 201210158342A CN 103424969 A CN103424969 A CN 103424969A
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Abstract
The invention provides a light source system which comprises a first solid-state light source, a second solid-state light source, a third solid-state light source, a light combining element, a light homogenizing element, a first plate and a first band-stop filter. The first solid-state light source, the second solid-state light source and the third solid-state light source provide a first wavelength light beam, a second wavelength light beam and a third wavelength light beam respectively. The first plate is provided with a first surface and a first fluorescent substance, the first surface is opposite to the light outlet face of the light combining element, and the first fluorescent substance is excited by the third wavelength light beam to produce a fourth wavelength light beam. The first band-stop filter allows the first wavelength light beam, the second wavelength light beam and the third wavelength light beam to pass through, and reflects the fourth wavelength light beam. According to the light source system, the intensity of specific-colored light rays can be increased, and the size of the light source system can be reduced.
Description
Technical field
The present invention relates to a kind of light-source system, particularly a kind of light-source system for projection arrangement.
Background technology
Light emitting diode (LED) has advantages of short and long service life start-up time, extensively replaces the light source of conventional high-tension mercury lamp as general projection arrangement.
Generally speaking, optical projection system provides the three primary colors light beam (red, green, blue) of different directions projection by light emitting diode, after closing the synthetic panchromatic light (white light) together of optical element, penetrate the light valve (for example DMD, LCD or LCoS) to projection arrangement.But the intensity of the green beam provided due to green LED is compared with the redness of redness or blue LED or the intensity of blue light beam, comparatively, the green brightness of the image that can cause projection arrangement to project is on the low side, causes this image to seem not nature.
Therefore, industry develops a kind of light-source system that increases green intensity.Refer to Fig. 1, light-source system 1 comprises a red light emitting diodes 11, two blue LEDs 13,15 and a ultraviolet light-emitting diodes 17.Red light emitting diodes 11 and blue LED 13 are red beam and blue light beams in order to light-source system 1 to be provided respectively.Blue LED 15 and ultraviolet light-emitting diodes 17 by two spectroscope 19a, 19b, excite a green emitting phosphor 12, to provide light-source system 1 brightness enough green beams respectively.
Because above-mentioned light-source system 1 need to have a plurality of spectroscopes, and each light emitting diode all needs to configure lens, makes the size of projection arrangement increase.If reduce the volume of projection arrangement, need the light source framework of light-source system is dwindled, its brightness also can relative reduce.And light-source system 1 green beam that provides still do not have enough intensity can with the strength matching of redness or blue light beam.
In view of this, providing a kind of intensity of the light (for example green glow) that increases particular color and the light-source system of reduction volume, is that an industry is desired most ardently the target of reaching for this reason.
Summary of the invention
A purpose of the present invention is to save the configuration space of light-source system, by the quantity that reduces solid state light emitter, can avoid the problem of the existing shared larger space of light-source system, light-source system of the present invention, except can saving occupied space, also can not reduce the brightness of the light beam (for example green beam) of particular color.
For reaching above-mentioned purpose, the invention provides a kind of light-source system, comprise: one first solid state light emitter, one second solid state light emitter, one the 3rd solid state light emitter, are closed optical element, an equal optical element, one first plate body and one first band-block filter.The first solid state light emitter is in order to provide one first wavelength light beam; The second solid state light emitter is in order to provide a second wave length light beam; The 3rd solid state light emitter is in order to provide a three-wavelength light beam; Close optical element and there is three incidence surfaces, an exiting surface, second wave length light reflection surface and a clearance layer, the configuration that intersects of second wave length light reflection surface and clearance layer, and second wave length light reflection surface and clearance layer are between three incidence surfaces and exiting surface, the second wave length light reflection surface is used for the long light beam of first wave and three-wavelength light beam and is passed through, and reflection second wave length light beam, before the first solid state light emitter, the second solid state light emitter and the 3rd solid state light emitter are arranged at respectively three incidence surfaces; Before all the optical element compartment of terrain is arranged at exiting surface; Before the first plate body compartment of terrain is arranged at exiting surface, and have first surface and one first fluorescent material relative with exiting surface, the first fluorescent material is arranged at first surface, in order to by the three-wavelength beam excitation, to be produced one the 4th wavelength light beam; The first band-block filter is arranged between exiting surface and equal optical element, uses for long light beam to the three-wavelength of first wave light beam and passes through, and reflect the 4th wavelength light beam.
The disclosed light-source system of the present invention, can reduce the configuration space of light-source system, and can reduce the quantity of solid state light emitter, to avoid the problem of the existing shared larger space of light-source system.
For above-mentioned purpose, technical characterictic and advantage can be become apparent, hereinafter with preferred embodiment, coordinate accompanying drawing to be elaborated.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of existing light-source system;
The schematic diagram of the light-source system that Fig. 2 is first embodiment of the invention;
The light-source system that Fig. 3 is the first embodiment of the present invention close the optical element schematic diagram;
The schematic diagram of the first plate body of the light-source system that Fig. 4 is the first embodiment of the present invention;
The light path schematic diagram of the light-source system that Fig. 5 is first embodiment of the invention;
The schematic diagram of the light-source system that Fig. 6 is second embodiment of the invention;
The first plate body of the light-source system that Fig. 7 A is second embodiment of the invention and the configuration schematic diagram of the second plate body;
Another of the first plate body of the light-source system that Fig. 7 B is second embodiment of the invention and the second plate body forms the aspect schematic diagram; And
The light path schematic diagram of the light-source system that Fig. 8 is second embodiment of the invention.
Wherein, description of reference numerals is as follows:
1 light-source system
11 red light emitting diodes
12 green emitting phosphors
13,15 blue LEDs
17 ultraviolet light-emitting diodes
19a, 19b spectroscope
2,2 ' light-source system
201 first light paths
202 second light paths
203 the 3rd light paths
204 the 4th light paths
205 the 5th light paths
206 the 6th light paths
21 first solid state light emitters
211 first wavelength light beams
22 second solid state light emitters
221 second wave length light beams
23 the 3rd solid state light emitters
231 three-wavelength light beams
233 the 4th wavelength light beams
235 the 5th wavelength light beams
237 the 6th wavelength light beams
24 close optical element
241 second wave length light reflection surfaces
243 clearance layer
245 first lens groups
247 second lens combination
249 the 3rd lens combination
25 equal optical elements
26, the 26 ' first plate body
261 first surfaces
263 first fluorescent materials
27 first band-block filters
28 second plate bodys
281 second surfaces
283 second fluorescent materials
29 second band-block filters
Embodiment
Refer to Fig. 2, Figure 2 shows that the schematic diagram of the light-source system of first embodiment of the invention.Light-source system 2 has one first solid state light emitter 21, one second solid state light emitter 22, one the 3rd solid state light emitter 23, and closes the equal optical element 25 of optical element 24,, one first plate body 26 and one first band-block filter 27.
The first solid state light emitter 21 is in order to provide one first wavelength light beam 211, the second solid state light emitters 22 in order to a second wave length light beam 221 to be provided, and the 3rd solid state light emitter 23 is in order to provide a three-wavelength light beam 231; The first wavelength light beam 211, second wave length light beam 221 and three-wavelength light beam 231 have respectively the wave band (or wavelength) between a given zone, and wantonly two wave bands of the first wavelength light beam 211, second wave length light beam 221 and three-wavelength light beam 231 can be fully overlapping, partly overlapping or fully not overlapping.
In the present embodiment, the first solid state light emitter 21 and the second solid state light emitter 22 can be respectively a blue light-emitting diode and a red light-emitting diode, and the 3rd solid state light emitter 23 can be a blue laser light source.In addition, the first wavelength light beam 211 and second wave length light beam 221 can be respectively blue light beam and red beam, and three-wavelength light beam 231 can be a blue laser beams.
Refer to Fig. 3, Figure 3 shows that the schematic diagram that closes optical element of the light-source system of first embodiment of the invention.Close optical element 24 and there is three incidence surfaces, an exiting surface, a second wave length light reflection surface 241 and a clearance layer 243, the configuration that intersects of second wave length light reflection surface 241 and clearance layer 243, and second wave length light reflection surface 241 and clearance layer 243 are between three incidence surfaces and exiting surface, form an X-type structure, fit and can separate four light path zones by closing optical element 24.In the present embodiment, closing optical element 24 is a prism group (X-Cube), so in other, implements, in aspect, also can adopt a cross lens set (X-Plate).
Please consult Fig. 2, three incidence surfaces and exiting surface be corresponding four light path zones of closing optical element 24 respectively again, and before the first solid state light emitter 21, the second solid state light emitter 22 and the 3rd solid state light emitter 23 be arranged at respectively three incidence surfaces; Close optical element 24 in order to the light course of (or definition) first wavelength light beam 211, second wave length light beam 221 and second wave length light beam 231 to be provided.
Second wave length light reflection surface 241 can be an optical coating, has the characteristic that can make 221 reflections of second wave length light beam, but can pass through for the first wavelength light beam 211 and three-wavelength light beam 231.
Please continue to consult Fig. 2, before all optical element 25 compartment of terrains are arranged at exiting surface, in order to uniform beam.In the first embodiment, all optical element 25 is a light harvesting post (integration rod), so in other, implement in aspect, those of ordinary skills also can spread to other aspects of equal optical element easily, for example an array lens (lens array), a fly lens (fly lens) or a photoconductive tube (light tunnel).
The first plate body 26 is before also compartment of terrain is arranged at exiting surface.Refer to Fig. 4, Figure 4 shows that the schematic diagram of the first plate body 26 of the first embodiment, and Fig. 2 is consulted in cooperation.The first plate body 26 has first surface 261 and one first fluorescent material 263, the first fluorescent materials 263 relative with the exiting surface that closes optical element 24 and is arranged at first surface 261.Whereby, the three-wavelength light beam 231 that the 3rd solid state light emitter 23 provides just can excite the first fluorescent material 263 of the first surface 261 that is positioned at the first plate body 26, and produce one the 4th wavelength light beam 233 after being reflected by clearance layer 243.First surface 261 can be a minute surface, in order to reflect the 4th wavelength light beam 233.In the present embodiment, the first fluorescent material 263 can be a green emitting phosphor.
Please consult Fig. 2, the first band-block filter 27 is arranged between the exiting surface and equal optical element 25 that closes optical element 24 again, and the first band-block filter 27 use are passed through for the long light beam 211 of first wave to three-wavelength light beam 231, and reflect the 4th wavelength light beam 233.The first band-block filter 27 also can be the coating with the optical filtering composition, can be directly coated, be arranged on exiting surface, to reach the effect of optical filtering.
Two incidence surfaces and the exiting surface that close optical element 24 separately can be provided with respectively a first lens group 245, one second lens combination 247 and one the 3rd lens combination 249.First lens group 245 is arranged at the first solid state light emitter 21 and closes between optical element 24, in order to control the light path of the first wavelength light beam 211.The second lens combination 247 is arranged at the second solid state light emitter 22 and closes between optical element 24, in order to control the light path of second wave length light beam 221.The 3rd lens combination 249 is arranged between equal optical element 25 and the first band-block filter 27, in order to control the light path of the first wavelength light beam 211 to the 4th wavelength light beam 233.
In detail, the first wavelength light beam 211 can, by 245 refractions of first lens group, then be injected and close optical element 24 with a special angle; Second wave length light beam 221 can, by the second lens combination 247 refractions, then be injected and close optical element 24 with a special angle; After the first wavelength light beam 211 and second wave length light beam 221 leave and close optical element 24, can be by the 3rd lens combination 249 refractions, then inject equal optical element 25 with a special angle, and after three-wavelength light beam 231 leaves and closes optical element 24, can, by the 3rd lens combination 249 refractions, then with a special angle, be incident upon the first plate body 26.In addition, the 4th wavelength light beam 233 also can, by the 3rd lens combination 249 refractions, then be incident upon the first band-block filter 27 and equal optical element 25 with a special angle.
The light path of advancing for describing light in detail is please consulted Fig. 2 and Fig. 5, the light path schematic diagram of the light-source system that Fig. 5 is first embodiment of the invention simultaneously.The first wavelength light beam 211 (blue light beam) that the first solid state light emitter 21 provides, through the first light path 201, by closing optical element 24, then enters equal optical element 25; The second wave length light beam 221 (red beam) that the second solid state light emitter 22 provides, through 241 reflections of second wave length reflecting surface, enters equal optical element 25 along the second light path 202; The three-wavelength light beam 231 (blue laser beams) that the 3rd solid state light emitter 23 provides, after clearance layer 243 reflections, penetrates and closes optical element 24 along the 3rd light path 203.
When three-wavelength light beam 231 is incident upon the first fluorescent material 263 on the first plate body 26, can convert the 4th wavelength light beam 233 to the first fluorescent material 263 effects.Because the first fluorescent material 263 is a green emitting phosphor, it is green beam that three-wavelength light beam 231 excites the 4th wavelength light beam 233 of the first fluorescent material 263 rear generations.The 4th wavelength light beam 233 reflexes to the first band-block filter 27, the first band-block filters 27 along the 4th light path 204 and reflects the 4th wavelength light beam 233 again, makes the 4th wavelength light beam 233 enter equal optical element 25.
From the above, the light beam that enters equal optical element 25 will have the first wavelength light beam 211 (blue light beam), second wave length light beam 221 (red beam) and the 4th wavelength light beam 233 (green beam).The first wavelength light beam 211 and second wave length light beam 221 are provided by light emitting diode, therefore brightness is enough.And the 4th wavelength light beam 233 is to be produced by the first fluorescent material 263, therefore brightness is also enough.In other words, the brightness of each color beam that all optical element 25 is exported is all sufficient, and it is on the low side that the image that therefore last projection arrangement projects does not have the brightness of particular color (for example green).
Being more than the explanation of the light-source system of first embodiment of the invention, is then the explanation of the light-source system of other embodiment of the present invention.
Please consult Fig. 6 and Fig. 8, Fig. 6 and Figure 8 shows that two schematic diagram of the light-source system of second embodiment of the invention simultaneously.The difference of the light-source system 2 of the light-source system 2 ' of the second embodiment and the first embodiment is, light-source system 2 ' more comprises one second plate body 28 and one second band-block filter 29, and the 3rd solid state light emitter 23 is separately in order to provide one the 5th wavelength light beam 235.The 5th light path 205 of the 5th wavelength light beam 235 is different from the 3rd light path 203 of three-wavelength light beam 231, and the 5th wavelength light beam 235 also can be a blue laser beams.
Before the second plate body 28 compartment of terrains are arranged at the exiting surface that closes optical element 24.Refer to Fig. 7 A, Fig. 7 A is depicted as the first plate body 26 of light-source system of the second embodiment and the arrangement schematic diagram of the second plate body 28, the second plate body 28 has second surface 281 and one second fluorescent material 283 relative with exiting surface, and the second fluorescent material 283 is arranged on second surface 281.
Refer to Fig. 7 B, Fig. 7 B is depicted as the different composition aspect schematic diagram of the first plate body 26 and the second plate body 28 of the light-source system of the second embodiment of the present invention.The first plate body 26 and the second plate body 28 can be combined into plate body 26 ', the first fluorescent material 263 and the second fluorescent material 283 that area is larger and be arranged at respectively on the surface 261 ' of plate body 26 '.
Please consult Fig. 6 and Fig. 8, three-wavelength light beam 231 can excite the first fluorescent material 263 that is positioned at the first plate body 26, and produces one the 4th wavelength light beam 233 again; The 5th wavelength light beam 235 can excite the second fluorescent material 283 that is positioned at the second plate body 28, and produces one the 6th wavelength light beam 237.
In the second embodiment, the second fluorescent material 263 can be a red fluorescence powder, therefore the 6th wavelength light beam 237 is a red beam.In addition, the red beam that the long light beam 237 of second wave length light beam 221 and the 6th light is different-waveband, and the wave band of second wave length light beam 221 is positioned at the wave band of the long light beam 237 of the 6th light.
The second band-block filter 29 is arranged between exiting surface and equal optical element 25.Now, the first band-block filter 27 can be arranged on exiting surface, and before the second band-block filter 29 can be arranged at the first band-block filter 27, and there is an angle between the second band-block filter 29 and the first band-block filter 27.The second band-block filter 29 can be used for the first wavelength light beam 211 to the 5th wavelength light beam 235 and pass through, and reflects the 6th wavelength light beam 237.
Then will illustrate further the light path that in light-source system 2 ', each light is advanced.The first light path 201 is identical with the light path of closing optical element 24 of aforesaid the first embodiment to the 4th light path 204, does not repeat them here.And the 5th wavelength light beam 235 (blue laser beams) of the 3rd solid state light emitter 23 enters through the 5th light path 205 and closes optical element 24, then, by after clearance layer 243 reflections, along the 5th light path 205, penetrate and close optical element 24.
Ejaculation is closed the 5th wavelength light beam 235 of optical element 24 and is then injected the second fluorescent material 283 on the second plate body 28, to produce the 6th wavelength light beam 237 (red beam).The 6th wavelength light beam 237 then advances to the second band-block filter 29 along the 6th light path 206.
After the 6th wavelength light beam 237 arrives the second band-block filter 29, the part light of the 6th wavelength light beam 237 (the namely wave band light identical with second wave length light beam 221) can be through the second band-block filter 29, and all the other light (the namely different light of wave band and second wave length light beam 221) can, by the second band-block filter 29 reflections, then enter equal optical element 25.
Should be noted that, the angle of the first band-block filter 27 and the second band-block filter 29, need arrange with the first plate body 26, the second plate body 28 and 25 collocation of equal optical element, make the 4th wavelength light beam 233 and the 6th wavelength light beam 237 can be respectively be reflected by the first band-block filter 27 and the second band-block filter 29 and enter equal optical element 25.
Because the 6th wavelength light beam 237 (red beam) is to be produced by the second fluorescent material 263, thus the light intensity abundance can mix with second wave length light beam 221 (red beam), with the brightness of the red beam of strengthening 25 outputs of equal optical element.
In sum, the disclosed light-source system of the present invention, can reduce the configuration space of light-source system, and can reduce the quantity of solid state light emitter, to avoid the problem of the existing shared larger space of light-source system.In addition, light-source system of the present invention, except can saving occupied space, also can increase the brightness of the light beam (for example green or red beam) of particular color.
The above embodiments only are used for exemplifying enforcement aspect of the present invention, and explain technical characterictic of the present invention, not are used for limiting protection category of the present invention.Any those of ordinary skills can unlabored change or the arrangement of isotropism all belong to the scope that the present invention advocates, protection scope of the present invention should be as the criterion with the claim scope.
Claims (12)
1. a light-source system, is characterized in that, comprises:
One first solid state light emitter, in order to provide one first wavelength light beam;
One second solid state light emitter, in order to provide a second wave length light beam;
One the 3rd solid state light emitter, in order to provide a three-wavelength light beam;
One closes optical element, there is three incidence surfaces, an exiting surface, a second wave length light reflection surface and a clearance layer, the configuration that intersects of this second wave length light reflection surface and this clearance layer, and this second wave length light reflection surface and this clearance layer are between this three incidence surface and this exiting surface, this second wave length light reflection surface is used for this first wavelength light beam and this three-wavelength light beam and is passed through, and reflect this second wave length light beam, before this first solid state light emitter, this second solid state light emitter and the 3rd solid state light emitter are arranged at respectively this three incidence surface;
One equal optical element, before compartment of terrain is arranged at this exiting surface;
One first plate body, before compartment of terrain is arranged at this exiting surface, and have first surface and one first fluorescent material relative with this exiting surface, this first fluorescent material is arranged at this first surface, in order to by this three-wavelength beam excitation, to be produced one the 4th wavelength light beam; And
One first band-block filter, be arranged between this exiting surface and this equal optical element, uses for this first wavelength light beam to this three-wavelength light beam and pass through, and reflect the 4th wavelength light beam.
2. light-source system as claimed in claim 1, wherein also, in order to one the 5th wavelength light beam to be provided, a light path of the 5th wavelength light beam is different from a light path of this three-wavelength light beam for the 3rd solid state light emitter.
3. light-source system as claimed in claim 2, also comprise one second plate body and one second band-block filter, before this second plate body compartment of terrain is arranged at this exiting surface, and there is second surface and one second fluorescent material relative with this exiting surface, this second fluorescent material is arranged on this second surface, produces one the 6th wavelength light beam in order to be excited by the 5th wavelength light beam; This second band-block filter is arranged between this exiting surface and this equal optical element, and and this first band-block filter between there is an angle, use for this first wavelength light beam to the 5th wavelength light beam and pass through, and reflect the 6th wavelength light beam.
4. light-source system as claimed in claim 3, wherein this second fluorescent material is a red fluorescence powder.
5. light-source system as claimed in claim 4, the red beam that wherein this second wave length light beam and the long light beam of the 6th light are different-waveband.
6. light-source system as described as any one in claim 3 to 5, wherein this first band-block filter is arranged on this exiting surface, and before this second band-block filter compartment of terrain is arranged at this first band-block filter.
7. light-source system as described as any one in claim 1 to 5, wherein this wall is an air layer.
8. light-source system as described as any one in claim 1 to 5, wherein this to close optical element be a prism group.
9. light-source system as described as any one in claim 1 to 5, also comprise a first lens group, one second lens combination and one the 3rd lens combination, this first lens group is arranged at this first solid state light emitter and this closes between optical element, this second lens combination is arranged at this second solid state light emitter and this closes between optical element, and the 3rd lens combination is arranged between this equal optical element and this first band-block filter.
10. light-source system as described as any one in claim 1 to 5, wherein this first solid state light emitter and this second solid state light emitter are a LED source, the 3rd solid state light emitter is a LASER Light Source.
11. light-source system as claimed in claim 10, wherein this first wavelength light beam and this second wave length light beam are respectively blue light beam and red beam, and this three-wavelength light beam is a blue laser beams.
12. light-source system as described as any one in claim 1 to 5, wherein this first fluorescent material is a green emitting phosphor, and the 4th wavelength light beam is a green beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158342.7A CN103424969B (en) | 2012-05-21 | 2012-05-21 | Light-source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158342.7A CN103424969B (en) | 2012-05-21 | 2012-05-21 | Light-source system |
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| Publication Number | Publication Date |
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| CN103424969A true CN103424969A (en) | 2013-12-04 |
| CN103424969B CN103424969B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210158342.7A Active CN103424969B (en) | 2012-05-21 | 2012-05-21 | Light-source system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105404012A (en) * | 2015-12-25 | 2016-03-16 | 刘飞 | Double-machine high-luminous efficiency stereo projection system |
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| JP2011128522A (en) * | 2009-12-21 | 2011-06-30 | Casio Computer Co Ltd | Light source unit and projector |
| CN202583682U (en) * | 2012-04-20 | 2012-12-05 | 杭州研明光电技术有限公司 | Compact liquid-crystal projecting-light-engine system adopting mixing light source |
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| CN1273641A (en) * | 1998-06-05 | 2000-11-15 | 精工爱普生股份株式会社 | Light source and display device |
| US6516217B1 (en) * | 1999-07-09 | 2003-02-04 | Fuji Photo Film Co., Ltd. | Fluorescence diagnosis system |
| CN1875217A (en) * | 2003-12-15 | 2006-12-06 | 索尼株式会社 | Lighting system and back-light device using this lighting system |
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| JP2011128522A (en) * | 2009-12-21 | 2011-06-30 | Casio Computer Co Ltd | Light source unit and projector |
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| CN105404012A (en) * | 2015-12-25 | 2016-03-16 | 刘飞 | Double-machine high-luminous efficiency stereo projection system |
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