CN102645828A - Projecting device, light source system for displaying and control methods thereof - Google Patents
Projecting device, light source system for displaying and control methods thereof Download PDFInfo
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- CN102645828A CN102645828A CN2011103934616A CN201110393461A CN102645828A CN 102645828 A CN102645828 A CN 102645828A CN 2011103934616 A CN2011103934616 A CN 2011103934616A CN 201110393461 A CN201110393461 A CN 201110393461A CN 102645828 A CN102645828 A CN 102645828A
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Abstract
The invention provides a projecting device, a light source system for displaying and control methods thereof. The light source system for displaying comprises a light source module and a control module. The light source module comprises a plurality of laser light sources; and the control module controls a plurality of the laser light sources to be at an opening/closing state according to a light power needed by displaying, so as to enable an actual output power of the light source module to be equal to the light power needed by displaying. With the adoption of the manner, the laser light source which is at the opening state can be ensured to work under the state that the output efficiency is relatively higher, and the optimization of the output efficiency can be realized.
Description
Technical field
The present invention relates to optical technical field, particularly relate to a kind of projection arrangement, demonstration with light-source system and control method thereof.
Background technology
At present, LASER Light Source is widely used in various demonstrations field, and for example the excitation source as projection arrangement comes the excitation fluorescent material colour wheel, and then produces three primary colours light sequence.In practical application, need regulate the different demonstration demand that realizes to the Output optical power of LASER Light Source usually.
In the prior art, when the Output optical power of LASER Light Source is regulated, normally realize the adjusting of Output optical power, and then satisfy the required luminous power of different demonstration demands through the drive current of regulating LASER Light Source.
See also Fig. 1, Fig. 1 is that Output optical power and the output efficiency of LASER Light Source is respectively with the change curve of drive current.Wherein, Horizontal ordinate is represented the drive current (A) of LASER Light Source; Ordinate is normalization numerical value (%); Block curve is represented the variation relation of the output efficiency (that is, photoelectric transformation efficiency) of LASER Light Source with drive current among the figure, and dashed curve is represented the variation relation of the Output optical power of LASER Light Source with drive current.
As can be seen from Figure 1, be different from traditional led light source, the Output optical power of LASER Light Source and output efficiency are along with the reduction of drive current all reduces gradually.As shown in Figure 1; The Output optical power of LASER Light Source is adjusted to a half of specified Output optical power when hope; Need the drive current of LASER Light Source be reduced to 0.28A from the 0.43A of nominal drive current, this moment, the output efficiency of LASER Light Source can drop to 84% of the highest output efficiency.
Therefore, the method for only adjusting its Output optical power through the drive current of adjustment LASER Light Source of prior art is unfavorable for optimizing output efficiency.
To sum up, need provide a kind of projection arrangement, demonstration, be unfavorable for optimizing the technical matters of output efficiency with the type of drive that solves prior art with light-source system and control method thereof.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of projection arrangement, demonstration with light-source system and control method thereof, to optimize output efficiency.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of demonstration to use light-source system, comprising: light source module, and this light source module comprises a plurality of LASER Light Sources; Control module, this control module are used for controlling a plurality of LASER Light Sources according to the required luminous power of demonstration and are in unlatching or closed condition, so that the actual Output optical power of light source module equals to show required luminous power.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: a kind of projection arrangement that adopts above-mentioned demonstration with light-source system is provided.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: a kind of control method that shows with light-source system is provided, comprises: confirm to show required luminous power; According to showing that a plurality of LASER Light Sources in the required luminous power control light source module are in unlatching or closed condition, show required luminous power so that the actual Output optical power of light source module equals this.
The invention has the beneficial effects as follows: the situation that is different from prior art; Projection arrangement of the present invention, demonstration are in according to a plurality of LASER Light Sources in the required luminous power control of the demonstration light source module with light-source system and control method thereof opens or closed condition; Avoided relying on fully and regulated the Output optical power that drive current is regulated LASER Light Source; Make the LASER Light Source that is in opening under the state of relative greater efficiency, to work, thereby realize the optimization of light source module output efficiency.
Description of drawings
Fig. 1 is that Output optical power and the output efficiency of LASER Light Source is respectively with the change curve of drive current;
Fig. 2 is that the present invention shows the structural representation with a preferred embodiment of light-source system;
Fig. 3 is that the present invention shows the pwm signal waveform figure with the different duty of another preferred embodiment of light-source system;
Fig. 4 is the structural representation of projection arrangement one preferred embodiment of the present invention;
Fig. 5 is that the present invention shows the process flow diagram with light-source system control method one preferred embodiment.
Embodiment
See also Fig. 2, Fig. 2 is that the present invention shows the structural representation with a preferred embodiment of light-source system.As shown in Figure 2, demonstration of the present invention mainly comprises light source module 11 and control module 12 with light-source system 10.
In a preferred embodiment, control module 12 is carried out independent control to each LASER Light Source 111, and according to showing that the part in required these a plurality of LASER Light Sources 111 of luminous power control is in opening, remainder is in closed condition.
Specifically, the specified Output optical power of each LASER Light Source 111 in the light source module 11 is identical.Control module 12 confirms to be in the quantity of the LASER Light Source 111 of closed condition according to following formula:
M＝int(N-P/P0)
Wherein, M is the quantity that is in the LASER Light Source 111 of closed condition, and N is the quantity of LASER Light Source 111 in the light source module 11, and P is for showing required luminous power, and P0 is the specified Output optical power of LASER Light Source 111, and int is a rounding operation.
For example, if comprise N=15 LASER Light Source 111 in the light source module 11, and the specified Output optical power of each LASER Light Source 111 is P0, and then the specified Output optical power of whole light source module 11 is 15 * P0.At this moment; If show required luminous power P equal light source module 11 the normal light output power 1/3rd, promptly (15 * P0)/3, then control module 12 is calculated M=int (15-P/P0)=10 to P=; Wherein int representes rounding operation, the quantity of the LASER Light Source 111 that M representes to close.Subsequently, control module 12 is selected 10 LASER Light Sources 111 from 15 LASER Light Sources 111 and is closed, and guarantees that simultaneously the actual Output optical power that is in an opening N-M=5 LASER Light Source 111 equals specified Output optical power separately.The actual Output optical power of control LASER Light Source 111 reaches separately, and the method for specified Output optical power generally is the rated current that reaches LASER Light Source 111 through the drive current that control module 12 is regulated the LASER Light Source 111 that is in opening.In addition, when LASER Light Source 111 was worked under the state of specified Output optical power, its actual output efficiency preferably was not less than 90% of the highest output efficiency, therefore made the output efficiency optimization of light source module 11.
Further; Owing in the quantity Calculation process of the LASER Light Source 111 of confirming to be in closed condition according to formula M=int (N-P/P0), may give up fraction part; Therefore cause when the LASER Light Source that is in opening 111 is all worked under the state at specified Output optical power, the actual Output optical power of light source module 11 can be slightly larger than the required luminous power of demonstration.Therefore, in a preferred embodiment, the drive current that is in the LASER Light Source 111 of opening through 12 pairs of control modules is finely tuned, so that the actual Output optical power strictness of light source module 11 equals to show required luminous power.
For example; When light source module 11 comprises N=15 LASER Light Source 111; Equal specified Output optical power half the of light source module 11 if show required luminous power, promptly P=(15 * P0)/2 o'clock, the quantity M=int (N-P/P0)=7 of the LASER Light Source 111 that need close; Therefore need make 7 LASER Light Sources 111 be in closed condition, and 8 LASER Light Sources 111 are in opening.At this moment, if 8 LASER Light Sources 111 that are in opening all work under the state of specified Output optical power, then (8 * P0) can be higher than the required luminous power of demonstration (P=7.5 * P0) to the actual Output optical power of light source module 11.At this moment; Can finely tune through drive current 8 LASER Light Sources 111 being in opening; The feasible actual Output optical power that is in each LASER Light Source 111 of opening reaches the 7.5/8=93.8% of specified Output optical power, and then makes the actual Output optical power strictness of light source module 11 equal to show required luminous power.From Fig. 1, can find out when the actual Output optical power of LASER Light Source 111 adjust to specified Output optical power 93.8% the time, its output efficiency does not obviously descend.
In a preferred embodiment, the actual output efficiency that is in the LASER Light Source 111 of opening preferably is not less than 80% of rated output separately.
Further, a plurality of temperature sensors (scheming not show) can be set in showing with light-source system 10, respectively the temperature of a plurality of LASER Light Sources 111 is detected.And then, when control module 12 is closed at control LASER Light Source 111, preferentially select the LASER Light Source 111 of the highest respective numbers of temperature to close.This design can make the LASER Light Source 111 that is in opening under relatively low temperature, work, and can further improve the serviceable life that shows with light-source system 10.In the above-described embodiments, control module 12 is carried out independent control to each LASER Light Source 111, and its control mode is flexible relatively, but has increased the complexity of circuit.Therefore, in another embodiment, can a plurality of LASER Light Sources 111 of light source module 11 be divided into many groups, the LASER Light Source 111 in every group can connect through the serial or parallel connection mode, and carries out independent control by 12 pairs of every group of LASER Light Sources of control module 111.At this moment, control module 12 can be controlled that specified Output optical power is not less than and be in opening near one or more groups LASER Light Source 111 that shows required luminous power according to above-mentioned formula, and all the other group LASER Light Sources 111 are in closed condition.Further, under the situation of needs, the drive current of respectively organizing LASER Light Source 111 that is in opening is finely tuned, make the actual Output optical power of light source module 11 equal to show required luminous power.
For example, when light source module 11 comprises N=15 LASER Light Source 111, can 15 LASER Light Sources 111 be divided into three groups, the quantity of every group of LASER Light Source 111 is respectively int (15/2)=7, int (15/3)=5 and 15-7-5=3.At this moment; Equal a half of the specified Output optical power of light source module 11 if show required luminous power; Control LASER Light Source quantity is that group LASER Light Source 111 of 7 is in closed condition; Control LASER Light Source quantity simultaneously and be two groups of LASER Light Sources 111 of 5 and 3 and be in opening, simultaneously the drive current of these two groups of LASER Light Sources 111 is finely tuned, so that the actual Output optical power of light source module 11 equals to show required luminous power.
As shown in Figure 3; In another embodiment of the present invention, can control at least one LASER Light Source 111 by control module 12 generations one pulse-width signal and periodically be in the opening and closing state so that the actual Output optical power of light source module 11 equals to show required luminous power.For example; At first control module 12 is confirmed the dutycycle of pulse-width signal according to the ratio of the specified Output optical power that shows required luminous power and light source module 11; And produce pulse-width signal and send to each LASER Light Source 111 in the light source module 11, and then control each LASER Light Source 111 and periodically be in the opening and closing state with this dutycycle.Fig. 3 has shown the pulse-width signal of three kinds of different duty 10%, 50%, 90% of same duty cycle T.Wherein, when pulse-width signal was low level signal, whole LASER Light Sources 111 of light source module 11 were in closed condition, and when pulse-width signal was high level signal, whole LASER Light Sources 111 of light source module 11 were in opening.Because three kinds of pulse-width signal control LASER Light Sources 111 are in the time length difference of opening, therefore can be so that light source module 11 produces different actual Output optical power.Certainly, in other embodiments, the part that control module 12 also can only be controlled whole LASER Light Sources 111 as required periodically is in the opening and closing state, and remainder is held open or closed condition always.
It should be noted that; When control module 12 realizes the control to light source module 11 through pulse-width signal; The modulating frequency that the frequency 1/T of the pulse-width signal that control module 12 produces should combine to be used for the light-modulating cell that image shows designs; Be generally image is not glimmered when watching, usually the Frequency Design of the pulse-width signal of control module 12 is become to be used for more than two times of maximum modulating frequency of the light-modulating cell that image shows.
Compared to prior art; The demonstration of the embodiment of the invention is controlled a plurality of LASER Light Sources 111 through control module 12 according to the required luminous power of demonstration with light-source system 10 and is in unlatching or closed condition; Make LASER Light Source 111 under the state of higher relatively output efficiency, carry out work, optimized the output efficiency of light source module 11.
See also Fig. 4, Fig. 4 is the structural representation of projection arrangement one preferred embodiment of the present invention.
As shown in Figure 4, projection arrangement 20 comprises and showing with light-source system 21, shaping lens 22, colour wheel 23, colour wheel detecting module 24, relay lens 25, prism 26, light-modulating cell 27 and camera lens 28.
Show and to adopt above-described various types of demonstration to use light-source system, and comprise light source module 211 and control module 212 with light-source system 21.Light source module 211 comprises a plurality of LASER Light Sources (not shown), and control module 212 is opened or closed condition according to showing that required these a plurality of LASER Light Sources of luminous power control are in.The laser that is in the LASER Light Source generation of opening carries out light path through suitable Multiplexing apparatus (not shown) and merges.Multiplexing apparatus can be optical fiber combiner well known in the art or close various elements such as light microscopic.Laser after light path merges preferably incides on the colour wheel 23 after shaping lens 22 or other optical element shapings.
Further, at least two look sections of this on the colour wheel 23 can be taken turns and periodically be arranged to show with the going out on the light path of light-source system 21 under the effect of motor (not shown) or other driving mechanisms, and then produced periodic colorama sequence.In the present embodiment, colour wheel 23 can be around a rotating shaft periodic rotary, and then makes of all kinds section of colour wheel 23 be arranged in turn and periodically to show going out on the light path with light-source system 21.In other embodiments, colour wheel 23 can also be taked other designs, for example disclosed rotary drum of Chinese patent CN200910105822.5 and moving belt.
Of all kinds section at colour wheel 23 is arranged in the process that goes out light path that shows with light-source system 21 in turn and periodically, and the position of 24 pairs of colour wheels 23 of colour wheel detecting module is surveyed, and produces the colour wheel synchronizing signal.For example, colour wheel detecting module 24 can be surveyed the mark that is attached in colour wheel 23 or the CD-ROM drive motor rotating shaft, and after detecting this mark, produces a colour wheel synchronizing pulse at every turn, and then produces the colour wheel synchronizing signal.
The colorama sequence that colour wheel 23 produces incides light-modulating cell 27 via relay lens 25 and prism 26.Light-modulating cell 27 can be MEMS (MEMS) and LCD various suitable optic modulating devices such as (LCD or LCoS).Light-modulating cell 27 further receives the colour wheel synchronizing signal, and confirms that according to the colour wheel synchronizing signal colorama sequence reaches the time of light-modulating cell 27, and carries out corresponding modulation.Light-modulating cell 27 is modulated to general knowledge known in this field according to the colour wheel synchronizing signal to the colorama sequence, repeats no more at this.Colorama sequence after light-modulating cell 27 modulation further projects on the screen through camera lens 28.
In a preferred embodiment, control module 22 further receives the colour wheel synchronizing signal, and adjustment shows required luminous power according to the colour wheel synchronizing signal, to satisfy different demonstration demands.
For example, in the white light enhanced scheme, colour wheel 23 also further is provided with white light and strengthens the look section except being provided with outside photochromic section of at least one primary colours (for example, red light color section, blue light color section or green light color section), to produce white light or gold-tinted.Wherein, white light or gold-tinted are used to strengthen the brightness that white light shows.In order to satisfy different demonstration demands, present embodiment is designed multiple mode of operation, comprises at least two kinds in normal mode, film mode and the document mode.Wherein, normal mode requires photochromic section of primary colours and white light to strengthen the identical or maintenance predetermined difference of brightness of the light that the look section produces.It is relatively low that film mode then requires white light to strengthen the brightness of the light that the look section produces, and require the brightness of light of photochromic section generation of primary colours higher relatively, to realize higher color saturation.It is higher relatively that document mode then requires white light to strengthen the brightness of the light that the look section produces, and require the brightness of light of photochromic section generation of primary colours relatively low, to realize the document display effect of higher brightness.
Therefore; In the present embodiment; Under film mode, control module 22 confirms that according to the colour wheel synchronizing signal white light strengthens the look section and gets into and leave the time that goes out light path that shows with light-source system 21, and white light strengthen the look section be in demonstration with light-source system 21 go out on the light path time will show that the relative normal mode of required luminous power reduces; For example be reduced to 1/2 of normal mode; Make the actual Output optical power of light source module 211 reduce, reduce the brightness that white light strengthens the light of look section generation thus, improve color saturation.In addition; Control module 22 also confirms that according to the colour wheel synchronizing signal primary colours get into and leave the time that goes out light path that shows with light-source system 21 for photochromic section; And photochromic section of primary colours be in show with light-source system 21 go out on the light path time will show that the relative normal mode of required luminous power improves, for example bring up to normal mode 1.2 times, make the actual Output optical power rising of light source module 211; Improve the brightness of the light of photochromic section generation of primary colours thus, improve color saturation.Further, can white light be strengthened the electric energy that the look section saves like this and leave photochromic section of primary colours for, and then change under the little situation, realize film mode high-performance demonstration down in general power.Certainly, those skilled in the art only can expect fully that the required luminous power of demonstration that white light is strengthened photochromic section of the required luminous power of demonstration or the primary colours of look section regulates.
Under document mode; Control module 22 confirms that according to the colour wheel synchronizing signal white light strengthens the look section and gets into and leave the time that goes out light path that shows with light-source system 21; And white light strengthen the look section be in show with light-source system 21 go out on the light path time will show that the relative normal mode of required luminous power improves; For example bring up to 1.5 times of normal modes; Make the actual Output optical power of light source module 211 improve, improve the brightness that white light strengthens the light of look section generation thus, improve the document display effect.In addition; Control module 22 also confirms that according to the colour wheel synchronizing signal primary colours get into and leave the time that goes out light path that shows with light-source system 21 for photochromic section; And photochromic section of primary colours be in show with light-source system 21 go out on the light path time will show that the relative normal mode of required luminous power reduces; For example be reduced to 1/2 of normal mode, make the actual Output optical power of light source module 211 reduce, reduce the brightness of the light of photochromic section generation of primary colours thus.Further, can leave photochromic section electric energy that saves of primary colours for white light like this and strengthen the look section, and then change under the little situation, realize that the high-performance under the document mode shows in general power.Certainly, those skilled in the art only can expect fully that the required luminous power of demonstration that white light is strengthened photochromic section of the required luminous power of demonstration or the primary colours of look section regulates.
In another embodiment, in case of all kinds section of colour wheel 23 confirm after, the duration of the colorama of the different colours of of all kinds section generation has just been confirmed.At this moment; Control module 22 according to not homochromy section of colour wheel synchronizing signal adjustment be arranged at light source module 211 go out on the light path time the required luminous power of demonstration; The brightness of colorama of the different colours of of all kinds section generation can be adjusted, and then the color of mixed light can be adjusted.
Adjustment shows that the mode of required luminous power can have multiple to control module 22 according to the colour wheel synchronizing signal.For example; Comprise at colour wheel 23 under the situation of red, green and blue; Can preset one in the control module 22 and show required luminous power P0; When control module 22 according to the colour wheel synchronizing signal confirm red color segment be arranged at light source module 211 go out on the light path time, the required luminous power of demonstration that the required luminous power P0 conduct of the demonstration that control module 22 will preset is corresponding with red color segment; When control module 22 according to the colour wheel synchronizing signal confirm green segment be arranged at light source module 211 go out on the light path time, control module 22 increases by the first predetermined difference value Δ p1 and obtains the required luminous power P1 of the demonstration corresponding with green segment on the required luminous power P0 of the demonstration of presetting; When control module 22 according to the colour wheel synchronizing signal confirm blue be arranged at light source module 211 go out on the light path time, control module 22 reduces by the first predetermined difference value Δ p2 and obtains the required luminous power P2 of the demonstration corresponding with blue on the required luminous power P0 of the demonstration of presetting.Below be directly to calculate according to the colour wheel synchronizing signal to obtain to show required luminous power for example; It is understandable that; Also can preset one comprise look section and the corresponding relation that shows required luminous power mapping table, and obtain to show required luminous power according to the look segment search mapping table of confirming through the colour wheel synchronizing signal.
In addition, need to prove that above embodiment has only enumerated according to colour wheel synchronizing signal adjustment and shown required luminous power, in fact, control module 22 also can be according to the colour wheel synchronizing signal, and shows required luminous power according to other signal adjustment.For example, control module 22 can show required luminous power according to the luminance signal adjustment, and to adapt to the different brightness demands of different application scene, this adjustment mode is particularly useful under the application scenarios of monochromatic segment color wheel.
See also Fig. 5, Fig. 5 is that the present invention shows the process flow diagram with light-source system control method one preferred embodiment.The present invention also provides a kind of control method that shows with light-source system, and control method comprises the steps:
S1: confirm to show required luminous power.
S2: according to showing that a plurality of LASER Light Sources in the required luminous power control light source module are in unlatching or closed condition, so that the actual Output optical power of light source module equals to show required luminous power.
As indicated above, in step S1, can show required luminous power according to the adjustment of colour wheel synchronizing signal, to satisfy different demonstration demands.
As indicated above, in the embodiment of step S2, according to showing that a part of LASER Light Source in the required luminous power control light source module is in closed condition, remainder is in opening.Wherein, when the specified Output optical power of each LASER Light Source is identical, can confirm to be in the quantity of the LASER Light Source of closed condition through following formula:
M＝int(N-P/P0)
Wherein, M is the quantity that is in the LASER Light Source of closed condition, and N is the quantity of LASER Light Source in the light source module, and P is for showing required luminous power, and P0 is the specified Output optical power of LASER Light Source, and int is a rounding operation.
Further, the actual Output optical power of LASER Light Source that control is in opening equals specified Output optical power separately, and its actual output efficiency preferably is not less than 90% of the highest output efficiency.Perhaps, can carry out trim process, so that LASER Light Source is worked down at the state of greater efficiency relatively to the drive current of the LASER Light Source that is in opening.Wherein, when the drive current of the LASER Light Source that is in opening was finely tuned, the actual output efficiency of control LASER Light Source was not less than 80% of separately the highest output efficiency.In addition, in a preferred embodiment, when closing LASER Light Source, preferentially select the LASER Light Source of the highest respective numbers of temperature to close.
As indicated above, in another embodiment of step S2,, periodically be in the opening and closing state to control at least one LASER Light Source according to showing that required luminous power produces a pulse-width signal.
In sum; The present invention is in opening through a part of controlling a plurality of LASER Light Sources according to the required luminous power of demonstration; Remainder is in closed condition; Or control at least that the part LASER Light Source periodically is in the opening and closing state, can be so that be in of the state work of the LASER Light Source of opening in higher relatively output efficiency, thereby realize the output efficiency optimization of light source module.In addition, on the above-mentioned basis of the present invention, further adjust the required luminous power of demonstration, and then satisfy different demonstration demands according to the colour wheel synchronizing signal.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (16)
1. light-source system is used in a demonstration, it is characterized in that said demonstration comprises with light-source system:
Light source module, said light source module comprises a plurality of LASER Light Sources;
Control module, said control module are used for controlling said a plurality of LASER Light Source according to the required luminous power of demonstration and are in unlatching or closed condition, so that the actual Output optical power of said light source module equals the required luminous power of said demonstration.
2. light-source system is used in demonstration according to claim 1, it is characterized in that, said control module also is used to obtain the colour wheel synchronizing signal, adjusts the required luminous power of said demonstration according to said colour wheel synchronizing signal.
3. light-source system is used in demonstration according to claim 2, it is characterized in that, the part that said control module is controlled in said a plurality of LASER Light Source according to the required luminous power of said demonstration is in opening, and remainder is in closed condition.
4. light-source system is used in demonstration according to claim 3, it is characterized in that, the actual output efficiency that is in the LASER Light Source of said opening is not less than 90% of separately the highest output efficiency.
5. light-source system is used in demonstration according to claim 3, it is characterized in that, the specified Output optical power of each said LASER Light Source is identical, and said control module confirms to be in the quantity of the LASER Light Source of said closed condition through following formula:
M＝int(N-P/P0)，
Wherein, M is the quantity that is in the LASER Light Source of said closed condition, and N is the quantity of the LASER Light Source in the said light source module, and P is the required luminous power of said demonstration, and P0 is the specified Output optical power of said LASER Light Source, and int is a rounding operation.
6. light-source system is used in demonstration according to claim 3; It is characterized in that; Said control module is further finely tuned the drive current of the LASER Light Source that is in said opening, and the actual output efficiency that wherein is in the LASER Light Source of said opening is not less than 80% of separately the highest output efficiency.
7. light-source system is used in demonstration according to claim 2, it is characterized in that, said a plurality of LASER Light Sources are divided into many groups, and said control module is carried out independent control to every group of LASER Light Source.
8. light-source system is used in demonstration according to claim 2, it is characterized in that, said control module produces a pulse-width signal according to the required luminous power of said demonstration, periodically is in the opening and closing state to control at least one said LASER Light Source.
9. a projection arrangement is characterized in that, said projection arrangement comprises that any described demonstration of claim 2-8 uses light-source system.
10. projection arrangement according to claim 9 is characterized in that, said projection arrangement further comprises colour wheel and colour wheel detecting module, and said colour wheel detecting module is surveyed the position of said colour wheel, and produces said colour wheel synchronizing signal.
11. projection arrangement according to claim 10; It is characterized in that; Said colour wheel comprises that white light strengthens photochromic section of look section and primary colours; Said control module confirms that according to said colour wheel synchronizing signal said white light strengthens look section and photochromic period that goes out light path that gets into and leave said demonstration with light-source system separately of said primary colours; The mode of operation of said projection arrangement comprises at least two kinds in normal mode, document mode and the film mode; Wherein under said document mode; Said control module said white light strengthen the look section be in said demonstration with light-source system go out on the light path time said relatively normal mode improve the required luminous power of said demonstration, strengthen the brightness of the light of look section generation to improve said white light, and/or said control module photochromic section of said primary colours be in said demonstration with light-source system go out on the light path time said relatively normal mode reduce the required luminous power of said demonstration; Brightness with the light that reduces photochromic section generation of said primary colours; Under said film mode, said control module said white light strengthen the look section be in said demonstration with light-source system go out on the light path time said relatively normal mode reduce the required luminous power of said demonstration, to reduce the brightness that said white light strengthens the light of look section generation; And/or said control module photochromic section of said primary colours be in said demonstration with light-source system go out on the light path time said relatively normal mode improve the required luminous power of said demonstration, with the brightness of the light that improves photochromic section generation of said primary colours.
12. one kind shows the control method with light-source system, it is characterized in that said control method:
Confirm to show required luminous power;
A plurality of LASER Light Sources according in the required luminous power control of the said demonstration light source module are in unlatching or closed condition, so that the actual Output optical power of said light source module equals the required luminous power of said demonstration.
13. control method according to claim 12 is characterized in that, said being in according to a plurality of LASER Light Sources in the required luminous power of the said demonstration control light source module opened or the step of closed condition comprises:
A part of controlling in said a plurality of LASER Light Source according to the required luminous power of said demonstration is in opening, and remainder is in closed condition.
14. control method according to claim 12 is characterized in that, said being in according to a plurality of LASER Light Sources in the required luminous power of the said demonstration control light source module opened or the step of closed condition comprises:
Produce a pulse-width signal according to the required luminous power of said demonstration, periodically be in the opening and closing state to control said a plurality of LASER Light Source.
15. control method according to claim 12 is characterized in that, the step of the required luminous power of said definite demonstration comprises:
Obtain the colour wheel synchronizing signal, adjust the required luminous power of said demonstration according to this colour wheel synchronizing signal.
16. control method according to claim 15 is characterized in that, the said method of adjusting the required luminous power of said demonstration according to the colour wheel synchronizing signal comprises:
Confirm that according to said colour wheel synchronizing signal the white light on the colour wheel strengthens look section and photochromic period that goes out light path that gets into and leave said demonstration with light-source system separately of primary colours; Said demonstration comprises at least two kinds in normal mode, document mode and the film mode with the mode of operation of light-source system; Under document mode; Said white light strengthen the look section be in said demonstration with light-source system go out on the light path time relative normal mode improve the required luminous power of said demonstration; Strengthen the brightness of the light that the look section produces to improve said white light; And/or photochromic section of said primary colours be in said demonstration with light-source system go out on the light path time said relatively normal mode reduce the required luminous power of said demonstration; Brightness with the light that reduces photochromic section generation of said primary colours; Under film mode, said white light strengthen the look section be in said demonstration with light-source system go out on the light path time said relatively normal mode reduce the required luminous power of said demonstration, to reduce the brightness that said white light strengthens the light of look section generation; And/or photochromic section of said primary colours be in said demonstration with light-source system go out on the light path time said relatively normal mode improve the required luminous power of said demonstration, with the brightness of the light that improves photochromic section generation of said primary colours.
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