CN103529631A - Double-color laser projection light source - Google Patents
Double-color laser projection light source Download PDFInfo
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- CN103529631A CN103529631A CN201310509593.XA CN201310509593A CN103529631A CN 103529631 A CN103529631 A CN 103529631A CN 201310509593 A CN201310509593 A CN 201310509593A CN 103529631 A CN103529631 A CN 103529631A
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Abstract
The invention relates to the field of projection display, in particular to a double-color laser projection light source. The double-color laser projection light source comprises two laser light sources and a fluorescent powder rotating wheel coated with fluorescent powder, wherein fluorescent powder radiates light under bombardment of one or two laser light sources; the two laser light sources are any two of a blue laser light source, a red laser light source and a green laser light source; the color of fluorescent powder radiation light is one of blue, red and green and excludes the color of the selected laser light source; light beams emitted by the two laser light sources and light radiated from the fluorescent powder are combined through a light combination system. The double-color laser projection light source has the benefits that the projector cost is reduced, the problem of speckle is solved, the projection display has good color and large color gamut, the reconstructed image is bright in color, and the luminance is higher.
Description
Technical field
The present invention relates to field of projection display, more specifically, relate to a kind of two-color laser projection light source.
Background technology
At present, laser has three kinds as light source applications in the mode of projector, and the one, directly three kinds of laser beams of RGB are incorporated in projector's light path by opticses such as optical fiber, illumination video picture device, is called RGB LASER Light Source.The second is to irradiate fluorescent powder runner by blue laser beams, on fluorescent powder runner, be coated with redness, green or also have yellow fluorescent powder, fluorescent powder stimulated radiation produces respectively redness, green or yellow light beam, and blueness is directly used laser beam after scattering is converged again.The third is laser to be mixed to use with LED light source, the green laser bombardment light-emitting phosphor that uses, and red use LED light source, or blueness is also used LED light source.The current cost of first kind of way is very high, also exists the technical matterss such as laser speckle there is no fine solution, can only be applied to very high-end occasion, such as senior movie theatre etc., this application brightness requirement is high, can reach with multiple sets of light sources very, and the applied in any combination of multiple sets of light sources also weakens speckle effect.The second way is because the radiant light color of fluorescent powder is good not, and colour gamut is very little, and the color of reproduced image is very poor, bright-coloured not.The third mode is used LED light source to realize good color by mixing, but because the brightness of LED light source is lower, the brightness of projector is restricted, and cannot realize higher brightness.
Summary of the invention
The present invention is at least one defect overcoming described in above-mentioned prior art, and the two-color laser that a kind of cost is lower, image reproducing color is good and brightness is higher projection light source is provided.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
A projection light source, comprises two LASER Light Source and fluorescent powder runner, on the predeterminable area of fluorescent powder runner, is coated with fluorescent powder, and fluorescent powder is radius under the bombardment of one or two LASER Light Source; Two LASER Light Source are wherein any two kinds of blue laser light source, red laser light source and green laser light sources, fluorescent powder radiant light color is a kind of color except electing LASER Light Source color as in blue, redness and green, and the light that the light that two LASER Light Source are sent and fluorescent powder give off is by closing spectrum integration light.
Compared with prior art, the beneficial effect of technical solution of the present invention is: do not adopt three LASER Light Source, and
Be to use the wherein LASER Light Source of two kinds of colors, reduced the cost of projector, but also solved the speckle issue that three primary colors all bring by LASER Light Source, can make projector be widely used in each occasion; And the present invention uses two LASER Light Source, avoided fluorescent powder radiant light (especially red light) color good not, the problem that colour gamut is little, under this scheme of the present invention, can realize projection display color good, and colour gamut is large, the brightly painted object of image reproducing.The projector that adopts two-color laser light source of the present invention, can provide higher brightness.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of two-color laser projection light source specific embodiment 2 of the present invention.
Fig. 2 is the schematic diagram of a kind of two-color laser projection light source specific embodiment 3 of the present invention.
Fig. 3 is the schematic diagram of a kind of two-color laser projection light source specific embodiment 4 of the present invention.
Fig. 4 is the schematic diagram of a kind of two-color laser projection light source specific embodiment 5 of the present invention.
Fig. 5 is the schematic diagram of fluorescent powder runner in the above-mentioned specific embodiment of a kind of two-color laser projection light source of the present invention.
Embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to patent of the present invention;
For better these embodiment of explanation, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing some known features and explanation thereof may to omit be understandable.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
Embodiment 1
The present invention be laser as light source applications in a kind of new mode of the mode of projector, in the present invention, use two LASER Light Source, re-use laser bombardment light-emitting phosphor, obtain three primary colors, realize in this manner LASER Light Source and be applied to projector.
A projection light source, comprises two LASER Light Source and fluorescent powder runner, on fluorescent powder runner, is coated with fluorescent powder, and fluorescent powder is radius under the bombardment of LASER Light Source; Two LASER Light Source are wherein any two kinds of blue laser light source, red laser light source and green laser light sources, fluorescent powder radiant light color is a kind of color except electing LASER Light Source color as in blue, redness and green, and the light that the light that two LASER Light Source are sent and fluorescent powder give off is by closing spectrum integration light.
In the present embodiment, the light beam that two LASER Light Source are sent is through closing photosystem, in closing photosystem, have or do not have roundabout, in light path, LASER Light Source is irradiated on fluorescent powder runner, laser beam makes fluorescent powder radiant light under bombardment, fluorescent powder radiant light is also through closing photosystem, and the light of final three kinds of colors is by closing spectrum integration light.Wherein, the LASER Light Source of impact fluorescence powder can be in two LASER Light Source, can also be that two LASER Light Source while impact fluorescence powder make its radiant light.
Use the laser projection of this mode, do not adopt three LASER Light Source, but use the wherein LASER Light Source of two kinds of colors, reduced the cost of projector, but also solved the speckle issue that three primary colors are all used LASER Light Source to bring, can make projector be widely used in each occasion; Also solved radiant light color good not, the problem that colour gamut is very little, under this scheme of the present invention, can realize projection display color good, and colour gamut is large, the brightly painted object of image reproducing; Adopt the projector of two-color laser light source of the present invention, higher brightness can be provided.
Embodiment 2
In order better to describe the present invention, the present embodiment is illustrated in connection with schematic diagram, is specially:
On the basis of embodiment 1, as shown in Figure 1, in the present embodiment, two LASER Light Source are respectively blue laser light source 13 and red laser light source 11.Fluorescent powder on fluorescent powder runner 14 is green emitting phosphor 141.
Further, as shown in Figure 5, fluorescent powder runner is provided with red transmission district 100, blue transmission district 200He green emitting phosphor district 300, and wherein green emitting phosphor is applied to green emitting phosphor district 300 1 sides.
In Fig. 1, green emitting phosphor district 300 is the anti-red filter of green indigo plant, the light beam that red laser light source 11 sends utilizes 100 transmissions of red transmission district to cross fluorescent powder runner 14, the light beam that blue laser light source 13 is sent utilizes 200 transmissions of blue transmission district to cross fluorescent powder runner 14, and the green emitting phosphor 141 in fluorescent powder runner 14Shang green emitting phosphor district 300 utilizes the light beam that light beam that blue laser light source 13 sends or red laser light source 11 send or utilizes blue laser light source 13 and light beam impact radiation that red laser light source 11 sends goes out green light simultaneously.
Wherein, close photosystem and comprise the saturating red filter 12 of anti-indigo plant, anti-indigo plant reveal the green red filter 15, the first catoptron 16, the second catoptron 17 and condenser group 181; Red laser light source 11, anti-blue saturating red filter 12, fluorescent powder runner 14, the anti-indigo plant red filter 15 that reveals the green is arranged in order setting; Blue laser light source 13 is arranged at anti-indigo plant red filter 15 1 sides that reveal the green.
In order to improve the utilization factor of light in communication process, in order to reduce loss, blue laser light source 13, red laser light source 11 and fluorescent powder runner 14 be front can be arranged corresponding collector lens group light beam is assembled.
In the present embodiment, in projection light source, the obtain manner of blue light beam is as follows:
Blue laser light source 13 is arranged at anti-indigo plant red filter 15 1 sides that reveal the green, the anti-indigo plant that its light beam sending is incident to after collector lens group 131 the converges red filter 15 that reveals the green, after revealing the green red filter 15 reflections, anti-indigo plant is incident on fluorescent powder runner 14, now the blue transmission district 200 of fluorescent powder runner 14 is just relative with the incident direction of light beam, make light beam just transmission cross the blue transmission district 200 of fluorescent powder runner 14, reflection through anti-blue saturating red filter 12, be incident to the first catoptron 16, after the first catoptron 16 reflections, be incident to the second catoptron 17, from the second catoptron 17 reflection, transmission is crossed collector lens group 171 and through anti-indigo plant being reflected into of red filter 15 of revealing the green, is incident upon condenser group 181 again.
In projection light source, the obtain manner of red light is as follows:
The saturating red filter 12 of anti-indigo plant is crossed in the light beam that red laser light source 11 sends transmission after collector lens group 111 converges, be incident on fluorescent powder runner 14, now the red transmission district 100 on fluorescent powder runner 14 is just relative with the incident direction of red light, make red light just transmission cross the red transmission district of fluorescent powder runner 14 and be incident to the anti-indigo plant red filter 15 that reveals the green, be incident to afterwards condenser group 181.
The obtain manner of projection light source medium green coloured light has three kinds:
(1) while utilizing separately blue laser light source 13 bombardment green emitting phosphors 141 to obtain green light, the light beam that blue laser light source 13 is sent reveals the green after the reflection of red filter 15 and is irradiated to separately on fluorescent powder runner 14 through anti-indigo plant after collector lens group 131 converges, now the green emitting phosphor district 300 of fluorescent powder runner 14 is just relative with the incident direction of light beam, thereby make the blue light beam of incident bombard the green emitting phosphor 141 in green emitting phosphor district 300, make green emitting phosphor 141 give off green light, the anti-indigo plant last condenser group 181 that arrives of red filter 15 that reveals the green is crossed in the transmission after being reflected into of green emitting phosphor district 300 self is incident upon collector lens group 142 optically focused of this green light,
(2) while utilizing separately red laser light source 11 bombardment green emitting phosphors 141 to obtain green light, the red beam that red laser light source 11 sends is irradiated on fluorescent powder runner 14 after after collector lens group 111 converges, the saturating red filter 12 of anti-indigo plant is crossed in transmission separately, now the green emitting phosphor district 300 on fluorescent powder runner 14 is just relative with the incident direction of red beam, thereby make the green emitting phosphor 141 in red beam bombardment green emitting phosphor district 300, make green emitting phosphor 141 give off green light, this green light is reflexed to after collector lens group 142 optically focused transmission by green emitting phosphor district 300 and crosses the anti-indigo plant last condenser group 181 that arrives of red filter 15 that reveals the green,
(3) when the light beam that utilizes light beam that blue laser light source 13 sends and red laser light source 11 to send is irradiated to green emitting phosphor district 300 simultaneously and obtains green light, the light beam that blue laser light source 13 is sent reveals the green after red filter 15 reflects and is incident on fluorescent powder runner 14 through anti-indigo plant, meanwhile, the light beam transmission that red laser light source 11 sends is irradiated to fluorescent powder runner 14 after crossing the saturating red filter 12 of anti-indigo plant, now the green emitting phosphor district 300 on fluorescent powder runner 14 is just relative with the direction of blue light beam and red beam two light beam incidents, make blue light beam and red beam two light beams bombard the green emitting phosphor 141 in green emitting phosphor district 300 simultaneously, make green emitting phosphor 141 give off green light, this green light is reflexed to after collector lens group 142 optically focused transmission by green emitting phosphor district 300 and crosses the anti-indigo plant last condenser group 181 that arrives of red filter 15 that reveals the green.
The green light that the light beam that the light beam that blue laser light source 13 is sent, red laser light source 11 send and green emitting phosphor give off is all passed through the anti-indigo plant red filter 15 that reveals the green, by the anti-indigo plant red filter 15 that reveals the green, at condenser group 181 places, can synthesize light beam, then arrive in projector's subsequent optical system 18.
In this embodiment, the light beam sending except blue laser light source 13 has more roundabout, and the light beam that red laser light source 11 sends and green light do not have roundabout substantially, thereby have reduced the difficulty of technique and protected light intensity and brightness.
Embodiment 3
In the present embodiment, according to light path, simplified device, cost-saving.Be specially:
As shown in Figure 2, the present embodiment comprises blue laser light source 21, red laser light source 22 and fluorescent powder runner 24, and the fluorescent powder on fluorescent powder runner 24 is green emitting phosphor 241.
Further, as shown in Figure 5, fluorescent powder runner is provided with red transmission district 100, blue transmission district 200He green emitting phosphor district 300, and wherein green emitting phosphor is applied to green emitting phosphor district 300 1 sides.
In Fig. 1, green emitting phosphor district 300 is the anti-red filter of green indigo plant, the light beam that red laser light source 22 sends utilizes 100 transmissions of red transmission district to cross fluorescent powder runner 24, the light beam that blue laser light source 21 is sent utilizes 200 transmissions of blue transmission district to cross fluorescent powder runner 24, and the green emitting phosphor 241 in fluorescent powder runner 24Shang green emitting phosphor district 300 utilizes the light beam that light beam that blue laser light source 21 sends or red laser light source 22 send or utilizes blue laser light source 21 and light beam impact radiation that red laser light source 22 sends goes out green light simultaneously.
Wherein, close photosystem and comprise anti-blue filter 23 and the condenser group 251 of being popular in; Blue laser light source 21, be instead popular in blue filter 23, fluorescent powder runner 24, close optical lens group 251 and be arranged in order setting; Red laser light source 22 is arranged at anti-blue filter 23 1 sides that are popular in.
In order to improve the utilization factor of light in communication process, in order to reduce loss, blue laser light source 21, red laser light source 22 and fluorescent powder runner 24 be front can be arranged corresponding collector lens group light beam is assembled.
In the present embodiment, in projection light source, the obtain manner of blue light beam is as follows:
The light beam that blue laser light source 21 is sent transmission after collector lens group 211 converges is excessively counter to be popular in blue filter 23 and to arrive fluorescent powder runners 24, now the blue transmission district 200 of fluorescent powder runner 24 is just relative with the incident direction of blue light beam, make blue light beam blue transmission district 200 transmission that just fluorescent powder runner 24 is crossed in transmission cross collector lens group 242, be then incident to condenser group 251.
In projection light source, the obtain manner of red light is as follows:
The light beam that red laser light source 21 sends arrives fluorescent powder runner 24 through the anti-reflection that is popular in blue filter 23 after collector lens group 221 converges, now the red transmission district 200 of fluorescent powder runner 24 is just relative with the incident direction of red beam, make red beam red transmission district 100 transmission that just fluorescent powder runner 24 is crossed in transmission cross collector lens group 242, be incident to afterwards condenser group 251.
The obtain manner of projection light source medium green coloured light has three kinds:
(1) while utilizing separately blue laser light source 21 bombardment green emitting phosphors 241 to obtain green light, the light beam that blue laser light source 21 is sent transmission after collector lens group 211 converges is excessively counter to be irradiated to separately on fluorescent powder runner 24 after being popular in blue filter 23, now the green emitting phosphor district 300 of fluorescent powder runner 24 is just relative with the incident direction of blue light beam, thereby make the blue light beam of incident bombard the green emitting phosphor 241 in green emitting phosphor district 300, make green emitting phosphor 241 give off green light, this green light is incident to condenser group 251 after being reflected into of green emitting phosphor district 300 self is incident upon collector lens group 242 optically focused,
(2) while utilizing separately red laser light source 22 bombardment green emitting phosphors 241 to obtain green light, the light beam that red laser light source 22 sends is irradiated to separately on fluorescent powder runner 24 through counter being popular in after blue filter 23 reflects after collector lens group 221 converges, now the green emitting phosphor district 300 of fluorescent powder runner 24 is just relative with the incident direction of red beam, thereby make the red beam of incident bombard the green emitting phosphor 241 in green emitting phosphor district 300, make green emitting phosphor 241 give off green light, this green light is incident to condenser group 251 after being reflected into of green emitting phosphor district 300 self is incident upon collector lens group 242 optically focused,
(3) when the light beam that utilizes light beam that blue laser light source 21 sends and red laser light source 22 to send is irradiated to green emitting phosphor district 300 simultaneously and obtains green light, light beam transmission that blue laser light source 21 is sent is excessively counter to be incident on fluorescent powder runner 24 after being popular in blue filter 23, meanwhile, the light beam that red laser light source 22 sends is incident on fluorescent powder runner 24 through counter being popular in after blue filter 23 reflects, now the green emitting phosphor district 300 on fluorescent powder runner 24 is just relative with the direction of blue light beam and red beam two light beam incidents, make two light beams bombard the green emitting phosphor 241 in green emitting phosphor district 300 simultaneously, make green emitting phosphor 241 give off green light, this green light is reflexed to the rear arrival condenser of collector lens group 242 group 251 by green emitting phosphor district 300.
The green light that the light beam 22 that the light beam that blue laser light source 21 is sent, red laser light source send and green emitting phosphor give off is synthetic light beam at optically focused group 251 places, and this light beam will arrive in projector's subsequent optical system 25.
In this embodiment, structure element very simple and that use is fewer, green emitting phosphor 241 radiation only along the identical direction outgoing of incident exciting light.Because light beam that now blue laser light source 21 is sent is without walking roundabout light path, light path is simply a lot.The light beam that the light beam that blue laser light source 21 is sent and red laser light source 22 send will converge through collector lens group before inciding fluorescent powder runner 24, so that there is more luminous energy to converge on green emitting phosphor 241, to improve optical energy utilization efficiency, make image reproducing color better more bright-coloured.
Embodiment 4
As shown in Figure 3, being specially in the present embodiment:
The present embodiment comprises blue laser light source 31, red laser light source 32 and fluorescent powder runner 33, and the fluorescent powder on fluorescent powder runner 33 is green emitting phosphor 331.
Further, as shown in Figure 5, fluorescent powder runner is provided with red transmission district 100, blue transmission district 200He green emitting phosphor district 300, and wherein green emitting phosphor is applied to green emitting phosphor district 300 1 sides.
In Fig. 3, green emitting phosphor district 300 is the anti-red filter of green indigo plant, thereby the light beam that blue laser light source 31 is sent is crossed fluorescent powder runner 33 by 200 transmissions of blue transmission district, the green emitting phosphor 331 in fluorescent powder runner 33Shang green emitting phosphor district 300 utilizes the light beam impact radiation that blue laser light source 31 is sent to go out green light.
Wherein, close photosystem and comprise anti-green filter 34, anti-blue saturating red filter 37, the 3rd catoptron 35, the 4th catoptron 36 and the condenser group 381 of being popular in of anti-indigo plant; Described blue laser light source 31 is oppositely arranged with red laser light source 32.
In order to improve the utilization factor of light in communication process, in order to reduce loss, the front convergence of carrying out light beam that corresponding collector lens group can be set of blue laser light source 31, red laser light source 32 and fluorescent powder runner 33.
In the present embodiment, in projection light source, the obtain manner of blue light beam is as follows:
The light beam that blue laser light source 31 is sent is popular in 34 reflections of green filter through anti-indigo plant is counter after collector lens group 311 converges, arrive green emitting phosphor runner 33, now the blue transmission district 200 of fluorescent powder runner 33 is just relative with the incident direction of light beam, make light beam just transmission cross the blue transmission district 200 of fluorescent powder runner 33, afterwards light beam successively through the 3rd catoptron 35, the 4th catoptron 36, anti-blue saturating red filter 37, anti-indigo plant is counter is incident to condenser group 381 after being popular in green filter 34 reflections.
In projection light source, the obtain manner of red light is as follows:
The light beam that red laser light source 32 sends passes through successively the saturating red filter 37 of anti-indigo plant, collector lens group 371 after collector lens group 321 converges, and is popular in green filter 34 and reflexes to condenser group 381 by anti-indigo plant is counter.
The obtain manner of projection light source medium green coloured light is as follows:
Utilize blue laser light source 31 bombardment green emitting phosphors 331 to obtain green light, the light beam that blue laser light source 31 is sent is popular in 34 reflections of green filter through anti-indigo plant is counter after collector lens group 311 converges, arrive green emitting phosphor runner 33, now the green emitting phosphor district 300 of fluorescent powder runner 33 is just relative with the incident direction of light beam, thereby make the light beam of incident bombard the green emitting phosphor 331 in green emitting phosphor district 300, make green emitting phosphor 331 give off green light.The transmission after the reflection in green emitting phosphor district 300 self of this green light crosses that collector lens group 332, anti-indigo plant are counter is popular in green filter 34, arrives afterwards condenser group 381.
The green light that the light beam that the light beam that blue laser light source 31 is sent, red laser light source 32 send and green emitting phosphor give off goes out synthetic light beam in condenser group 381 after being popular in green filter 34 by anti-indigo plant is counter, then arrives in projector's subsequent optical system 38.
Known in Fig. 3, the light beam that red laser light source 32 sends need not pass fluorescent powder runner 33, after directly converging, through anti-red anti-indigo plant, reveals the green after filter 34 and enters projector's light inlet, and light path is simple.
Embodiment 5
The present embodiment, for replacing the structure of embodiment 2, can reach effect required for the present invention equally.Be specially:
As shown in Figure 4, the present embodiment comprises blue laser light source 41, red laser light source 42 and fluorescent powder runner 45, and the fluorescent powder on fluorescent powder runner 45 is green emitting phosphor 451.
Further, as shown in Figure 5, fluorescent powder runner is provided with red transmission district 100, blue transmission district 200He green emitting phosphor district 300, and wherein green emitting phosphor is applied to green emitting phosphor district 300 1 sides.
In Fig. 4, green emitting phosphor district 300 is the anti-red filter of green indigo plant, thereby the light beam that blue laser light source 41 is sent is crossed fluorescent powder runner 45 by 200 transmissions of blue transmission district, thereby the light beam that red laser light source 42 sends is crossed fluorescent powder runner 45 by 100 transmissions of red transmission district, the green emitting phosphor 451 in fluorescent powder runner 45Shang green emitting phosphor district 300 utilizes the light beam that light beam that blue laser light source 41 sends or red laser light source 42 send or utilizes blue laser light source 41 and light beam impact radiation that red laser light source 42 sends goes out green light simultaneously.
Wherein, close photosystem and comprise anti-blue filter 44, anti-green filter 43, the 5th catoptron 46, the 6th catoptron 47, the 7th catoptron 48, the condenser group 491 of being popular in of anti-indigo plant of being popular in; Blue laser light source 41 setting adjacent with red laser light source 42.
In order to improve the utilization factor of light in communication process, in order to reduce loss, blue laser light source 41, red laser light source 42 and fluorescent powder runner 45 be front can be arranged corresponding collector lens group light beam is assembled.
In the present embodiment, in projection light source, the obtain manner of blue light beam is as follows:
The light beam that blue laser light source 41 is sent transmission after collector lens group 411 converges is excessively counter is popular in blue filter 44, through anti-indigo plant is counter, be popular in transmission collector lens group 452 after 43 reflections of green filter, arrive fluorescent powder runner 45, now the blue transmission district 200 of fluorescent powder runner 45 is just relative with the incident direction of light beam, make light beam just transmission cross the blue transmission district 200 of fluorescent powder runner 45, light beam is popular in green filter 43 reflections through the 5th catoptron 46, the 6th catoptron 47, the 7th catoptron 48, anti-indigo plant are counter successively afterwards, and is incident to condenser group 491.
In projection light source, the obtain manner of red light is as follows:
The light beam that red laser light source 42 sends transmission after collector lens group 421 converges is excessively counter is popular in blue filter 44, through anti-indigo plant is counter, be popular in transmission collector lens group 452 after 43 reflections of green filter, arrive fluorescent powder runner 45, now the red transmission district 100 of fluorescent powder runner 45 is just relative with the incident direction of light beam, make light beam just transmission cross the red transmission district 100 of fluorescent powder runner 45, light beam is popular in green filter 43 reflections through the 5th catoptron 46, the 6th catoptron 47, the 7th catoptron 48, anti-indigo plant are counter successively afterwards, and is incident to condenser group 491.
The obtain manner of projection light source medium green coloured light has three kinds:
(1) while utilizing separately blue laser light source 41 bombardment green emitting phosphors 451 to obtain green light, the light beam that blue laser light source 41 is sent transmission after collector lens group 411 converges is excessively counter is popular in blue filter 44, through anti-indigo plant is counter, be popular in transmission collector lens group 452 after 43 reflections of green filter, arrive fluorescent powder runner 45; Now the green emitting phosphor district 300 of fluorescent powder runner 45 is just relative with the incident direction of blue light beam, thereby makes the light beam of incident bombard the green emitting phosphor 451 in green emitting phosphor district 300, makes green emitting phosphor 451 give off green light.The transmission after being reflected into of green emitting phosphor district 300 self is incident upon collector lens group 452 optically focused of this green light crosses that anti-indigo plant is counter is popular in green filter 43, arrives condenser group 491.
(2) while utilizing separately red laser light source 42 bombardment green emitting phosphors 451 to obtain green light, the light beam that red laser light source 42 sends transmission after collector lens group 421 converges is excessively counter is popular in blue filter 44, through anti-indigo plant is counter, be popular in transmission collector lens group 452 after 43 reflections of green filter, arrive fluorescent powder runner 45; Now the green emitting phosphor district 300 of fluorescent powder runner 45 is just relative with the incident direction of red beam, thereby make the light beam of incident bombard the green emitting phosphor 451 in green emitting phosphor district 300, make green emitting phosphor 451 give off green light, the transmission after being reflected into of green emitting phosphor district 300 self is incident upon collector lens group 452 optically focused of this green light crosses that anti-indigo plant is counter is popular in green filter 43, arrives condenser group 491.
(3) when the light beam that utilizes light beam that blue laser light source 41 sends and red laser light source 42 to send is irradiated to green emitting phosphor district 300 simultaneously and obtains green light, all after collector lens group 421 converges, transmission is excessively counter is popular in blue filter 44 for the light beam that the light beam that blue laser light source 41 is sent and red laser light source 42 send, through anti-indigo plant is counter, be popular in transmission collector lens group 452 after 43 reflections of green filter, arrive fluorescent powder runner 45; Now, the green emitting phosphor district 300 of fluorescent powder runner 45 is just relative with the incident direction of blue light beam and red beam two light beams, thereby make two light beams of incident bombard the green emitting phosphor 451 in green emitting phosphor districts 300, make green emitting phosphor 451 give off green light.The transmission after being reflected into of green emitting phosphor district 300 self is incident upon collector lens group 452 optically focused of this green light crosses that anti-indigo plant is counter is popular in green filter 43, arrives condenser group 491.
The green light that the light beam 42 that the light beam that blue laser light source 41 is sent, red laser light source send and green emitting phosphor give off by anti-indigo plant counter be popular in green filter 43 at condenser group 491 places synthetic light beam, then arrive in projector's subsequent optical system 49.
In the present invention, above-mentioned each example all adopts double laser light source, from cost angle, the cost of manufacture of LASER Light Source is still higher at present, so only adopt double laser light source, in the situation that guaranteeing brightness with bright-colored degree, reach the object that reduces costs and be generally applicable to various occasions.In specific embodiment 2,3,4,5, fluorescent powder runner is the fluorescent powder runner that scribbles green emitting phosphor, and green emitting phosphor is when radiation green light, and in luminescence process, fluorescent powder runner can generate heat.Fluorescent powder runner rotates and also plays thermolysis, to reach protective device, makes device lifetime longer.
In the scheme that Fig. 1, Fig. 3, Fig. 4 show, in the roundabout light path of turning back, can use relay lens group or light-radiating lens group, to reduce the optical energy loss in transmittance process, and light beam be done to homogenising and process, repeat no more here.
In the various embodiments described above, fluorescent powder runner is provided with red transmission district 100, blue transmission district 200He green emitting phosphor district 300.More, in order more to make color enrich and to be easier to imaging, can again on fluorescent powder runner Yi Ge yellow fluorescent powder district be set, yellow fluorescent powder scribbles yellow fluorescent powder in district more.Bombardment by laser produces sodium yellow, this sodium yellow is incident in condenser group with the propagation light path identical with green light, the synthetic light beam of green light that the light beam that this sodium yellow and blue laser light source are sent, the light beam that red laser light source sends and green emitting phosphor give off, the light beam obtaining by four kinds of actinic lights can access more colourful image.
In accompanying drawing, describe position relationship only for exemplary illustration, can not be interpreted as the restriction to this patent.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For a person skilled in the art, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in the protection domain of the claims in the present invention.
Claims (9)
1. a two-color laser projection light source, is characterized in that: comprise two LASER Light Source and fluorescent powder runner, on fluorescent powder runner, be coated with fluorescent powder, fluorescent powder is radius under the bombardment of one or two LASER Light Source; Two LASER Light Source are wherein any two kinds of blue laser light source, red laser light source and green laser light sources, fluorescent powder radiant light color is a kind of color except electing LASER Light Source color as in blue, redness and green, and the light that the light beam that two LASER Light Source are sent and fluorescent powder give off is by closing spectrum integration light.
2. two-color laser projection light source according to claim 1, is characterized in that, described two LASER Light Source are respectively blue laser light source and red laser light source, and fluorescent powder is green emitting phosphor.
3. two-color laser projection light source according to claim 2, it is characterized in that, described fluorescent powder runner is provided with the blue transmission district of the light beam that green emitting phosphor district and transmissive blue laser light source send, the red transmission district of light beam that transmissive red laser light source sends, and green emitting phosphor is coated on green emitting phosphor district one side; Green emitting phosphor in green emitting phosphor district utilizes the light beam that light beam that blue laser light source sends or red laser light source send or utilizes the light beam impact radiation that blue laser light source and red laser light source send to go out green light simultaneously, and the green light that the light beam that the light beam that blue laser light source is sent, red laser light source send and green emitting phosphor give off is by closing spectrum integration light.
4. two-color laser projection light source according to claim 3, it is characterized in that, green emitting phosphor district on described fluorescent powder runner is the anti-red filter of green indigo plant, described in close photosystem and comprise the saturating red filter of anti-indigo plant, anti-indigo plant reveal the green red filter, the first catoptron, the second catoptron and condenser group; Reveal the green red filter, condenser group of described red laser light source, anti-blue saturating red filter, fluorescent powder runner, anti-indigo plant is arranged in order setting, and blue laser light source is arranged at anti-indigo plant red filter one side that reveals the green; Then the light beam that red laser light source sends the successively anti-blue saturating red filter of transmission, the red transmission district of fluorescent powder runner, the anti-indigo plant red filter that reveals the green is incident to condenser group; Then the light beam that blue laser light source is sent is incident to condenser group through the anti-indigo plant blue transmission district of red filter, fluorescent powder runner, anti-blue saturating red filter, the first catoptron, the second catoptron, the anti-indigo plant red filter that reveals the green that reveals the green successively; The green emitting phosphor applying on fluorescent powder runner utilizes the light beam that light beam that blue laser light source sends or red laser light source send or utilizes the light beam impact radiation that blue laser light source and red laser light source send to go out green light simultaneously, the anti-indigo plant of this green light transmission reveals the green after red filter and is incident to condenser group, the green light of the light beam that the light beam that blue laser light source is sent, red laser light source send and green emitting phosphor radiation by anti-indigo plant reveal the green red filter at condenser group place synthetic light beam.
5. two-color laser projection light source according to claim 3, it is characterized in that, green emitting phosphor district on described fluorescent powder runner is the anti-red filter of green indigo plant, the described photosystem that closes comprises anti-blue filter and the condenser group of being popular in, and described blue laser light source, the anti-blue filter, fluorescent powder runner, condenser group of being popular in are arranged in order setting; Red laser light source is arranged at anti-blue filter one side that is popular in; The light beam that blue laser light source is sent is popular in the blue transmission district of blue filter, fluorescent powder runner and is incident to condenser group through counter successively, and the light beam that red laser light source sends is popular in the red transmission district of blue filter, fluorescent powder runner and is incident to condenser group through counter successively; The green emitting phosphor applying on fluorescent powder runner utilizes the light beam that light beam that blue laser light source sends or red laser light source send or utilizes the light beam impact radiation that blue laser light source and red laser light source send to go out green light simultaneously, and this green light is incident to condenser group; The green light of the light beam that the light beam that blue laser light source is sent, red laser light source send and green emitting phosphor radiation can be synthesized light beam at condenser group place.
6. two-color laser projection light source according to claim 3, it is characterized in that, green emitting phosphor district on described fluorescent powder runner is anti-green blue filter, described in close photosystem and comprise anti-green filter, anti-blue saturating red filter, the 3rd catoptron, the 4th catoptron and the condenser group of being popular in of anti-indigo plant; Described blue laser light source and red laser light source are oppositely arranged; The light beam that blue laser light source is sent successively through the anti-blue transmission district that is popular in green filter, fluorescent powder runner of anti-indigo plant, the 3rd catoptron, the 4th catoptron, anti-blue saturating red filter, anti-indigo plant is counter is incident to condenser group after being popular in green filter; The light beam transmission that red laser light source sends is crossed the saturating red filter of anti-indigo plant and is popular in green filter and reflexes to condenser group by anti-indigo plant is counter; The green emitting phosphor applying on fluorescent powder runner utilizes the light beam impact radiation that blue laser light source is sent to go out green light, and this green light transmission crosses that anti-indigo plant is counter to be popular in green filter and to arrive condenser group; The green light of the light beam that the light beam that blue laser light source is sent, red laser light source send and green emitting phosphor radiation is popular in green filter and can synthesizes light beam at condenser group place by anti-indigo plant is counter.
7. two-color laser projection light source according to claim 3, it is characterized in that, green emitting phosphor district on described fluorescent powder runner is the anti-red filter of green indigo plant, described in close photosystem comprise be instead popular in blue filter, anti-indigo plant is counter is popular in green filter, the 5th catoptron, the 6th catoptron, the 7th catoptron and closes optical lens group; The adjacent setting of blue laser light source and red laser light source; The light beam that blue laser light source is sent through being instead popular in blue filter, anti-blue anti-blue transmission district, the 5th catoptron, the 6th catoptron, the 7th catoptron, the anti-indigo plant that is popular in green filter, fluorescent powder runner is counter is incident to condenser group after being popular in green filter, the light beam that red laser light source sends through being instead popular in blue filter, anti-blue anti-red transmission district, the 5th catoptron, the 6th catoptron, the 7th catoptron, the anti-indigo plant that is popular in green filter, fluorescent powder runner is counter is incident to condenser group after being popular in green filter; The green emitting phosphor applying on fluorescent powder runner utilizes the light beam that light beam that blue laser light source sends or red laser light source send or utilizes the light beam impact radiation that blue laser light source and red laser light source send to go out green light simultaneously, and this green light transmission crosses that anti-indigo plant is counter to be popular in green filter and to arrive condenser group; The green light of the light beam that the light beam that blue laser light source is sent, red laser light source send and fluorescent powder radiation can be synthesized light beam by the anti-red indigo plant filter that reveals the green at condenser group place.
8. according to the two-color laser projection light source described in claim 2-7 any one, it is characterized in that, on described fluorescent powder runner, be also provided with the yellow fluorescent powder district that scribbles yellow fluorescent powder, yellow fluorescent powder in yellow fluorescent powder district gives off sodium yellow under the bombardment of arbitrary or the light beam that two LASER Light Source are sent, and with the light path identical with green light, be incident to condenser group, the synthetic light beam of green light of the light beam that the light beam that this sodium yellow and blue laser light source are sent, red laser light source send and green emitting phosphor radiation.
9. according to the two-color laser projection light source described in claim 2-7 any one, it is characterized in that, before described blue laser light source, red laser light source and fluorescent powder runner, be provided with collector lens.
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Application publication date: 20140122 |