CN102645828B - 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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- CN102645828B CN102645828B CN201110393461.6A CN201110393461A CN102645828B CN 102645828 B CN102645828 B CN 102645828B CN 201110393461 A CN201110393461 A CN 201110393461A CN 102645828 B CN102645828 B CN 102645828B
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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 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 carrys out excitation fluorescent material colour wheel, and then produces three primary colours light sequence.In actual applications, conventionally need to regulate to realize different demonstration demands to the Output optical power of LASER Light Source.
In prior art, when the Output optical power of LASER Light Source is regulated, normally by regulating the drive current of LASER Light Source to realize the adjusting of Output optical power, and then meet the required luminous power of different demonstration demands.
Refer to Fig. 1, Fig. 1 is that the Output optical power of LASER Light Source and output efficiency are respectively with the change curve of drive current.Wherein, horizontal ordinate represents the drive current (A) of LASER Light Source, ordinate is normalization numerical value (%), the output efficiency that in figure, block curve represents LASER Light Source (, photoelectric transformation efficiency) with the variation relation of drive current, dashed curve represents that the Output optical power of LASER Light Source is with the variation relation of 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, when hope is adjusted to the Output optical power of LASER Light Source one half of specified Output optical power, the drive current of LASER Light Source need to be reduced to 0.28A from the 0.43A of nominal drive current, now the output efficiency of LASER Light Source can drop to 84% of the highest output efficiency.
Therefore, the method for its Output optical power of only adjusting by adjusting the drive current of LASER Light Source of prior art, is unfavorable for optimizing output efficiency.
To sum up, need to provide a kind of projection arrangement, demonstration light-source system and control method thereof, to solve the type of drive of prior art, be unfavorable for optimizing the technical matters of output efficiency.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of projection arrangement, demonstration 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: a kind of demonstration light-source system is provided, comprises: light source module, and this light source module comprises a plurality of LASER Light Source; Control module, this control module is for controlling a plurality of LASER Light Source in opening or closed condition, so that the actual Output optical power of light source module equals to show required luminous power according to the required luminous power of demonstration.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: a kind of projection arrangement of light-source system for above-mentioned demonstration that adopts 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 showing with light-source system is provided, comprises: determine and show required luminous power; According to a plurality of LASER Light Source in the required luminous power control of demonstration light source module, in opening or closed condition, so that equaling this, the actual Output optical power of light source module shows required luminous power.
The invention has the beneficial effects as follows: the situation that is different from prior art, projection arrangement of the present invention, demonstration by light-source system and control method thereof according to showing that required luminous power controls a plurality of LASER Light Source in light source module in opening or closed condition, avoided relying on completely the Output optical power that regulates drive current to regulate LASER Light Source, LASER Light Source in opening can be worked under relatively high efficiency state, thereby realize the optimization of light source module output efficiency.
Accompanying drawing explanation
Fig. 1 is that the Output optical power of LASER Light Source and output efficiency are 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 the pwm signal waveform figure that the present invention shows the different duty of another preferred embodiment of using 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
Refer to 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.
Light source module 11 comprises a plurality of LASER Light Source 111.Control module 12 is connected with light source module 11, control module 12 is controlled the plurality of LASER Light Source 111 according to the required luminous power of demonstration, make the plurality of LASER Light Source 111 in opening or closed condition, so that the actual Output optical power of light source module 11 equals to show required luminous power.
In a preferred embodiment, control module 12 is carried out independent control to each LASER Light Source 111, and according to showing that required luminous power controls a part in the plurality of LASER Light Source 111 in opening, remainder is in closed condition.
Specifically, the specified Output optical power of each LASER Light Source 111 in light source module 11 is identical.Control module 12 is determined the quantity of the LASER Light Source 111 in closed condition according to following formula:
M＝int(N-P/P0)
Wherein, M is the quantity of the LASER Light Source 111 in closed condition, and N is the quantity of LASER Light Source 111 in 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 rounding operation.
For example, if light source module 11 comprises N=15 LASER Light Source 111, and the specified Output optical power of each LASER Light Source 111 is P0, and the specified Output optical power of whole light source module 11 is 15 * P0.Now, if show required luminous power P equal light source module 11 normal light output power 1/3rd, i.e. P=(15 * P0)/3, control module 12 is calculated M=int (15-P/P0)=10, wherein int represents rounding operation, and M represents the quantity of the LASER Light Source 111 that need to close.Subsequently, control module 12 is selected 10 LASER Light Source 111 from 15 LASER Light Source 111 and is closed, and guarantees that the actual Output optical power in an opening N-M=5 LASER Light Source 111 equals specified Output optical power separately simultaneously.It is generally to regulate the drive current of the LASER Light Source 111 in opening to reach the rated current of LASER Light Source 111 by control module 12 that the actual Output optical power of control LASER Light Source 111 reaches the method for specified Output optical power separately.In addition,, when LASER Light Source 111 is worked under the state of specified Output optical power, its actual output efficiency is preferably not less than 90% of the highest output efficiency, therefore makes the output efficiency optimization of light source module 11.
Further, owing to may give up fraction part in the computation process of quantity of determining the LASER Light Source 111 in closed condition according to formula M=int (N-P/P0), therefore cause when the LASER Light Source 111 in opening 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 of the LASER Light Source 111 by 12 pairs of control modules in opening is finely tuned, so that the actual Output optical power of light source module 11 strictly equals to show required luminous power.
For example, when light source module 11 comprises N=15 LASER Light Source 111, if show, required luminous power equals half of specified Output optical power of light source module 11, be P=(15 * P0)/2 o'clock, the quantity M=int (N-P/P0)=7 of the LASER Light Source 111 that need to close, therefore need to make 7 LASER Light Source 111 in closed condition, and 8 LASER Light Source 111 are in opening.Now, if all work under the state at specified Output optical power in 8 LASER Light Source 111 of opening, the actual Output optical power (8 * P0) of light source module 11 can be higher than showing required luminous power (P=7.5 * P0).Now, can finely tune by the drive current of 8 LASER Light Source 111 in opening, make the actual Output optical power of each LASER Light Source 111 in opening reach the 7.5/8=93.8% of specified Output optical power, and then make the actual Output optical power of light source module 11 strictly 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% time, its output efficiency does not obviously decline.
In a preferred embodiment, the actual output efficiency of the LASER Light Source in opening 111 is preferably not less than 80% of rated output separately.
Further, can show with a plurality of temperature sensor (not shown) are set in light-source system 10, respectively the temperature of a plurality of LASER Light Source 111 is detected.And then, when control module 12 is closed in control LASER Light Source 111, preferentially select the LASER Light Source 111 of the respective numbers that temperature is the highest to close.This design can make the LASER Light Source 111 in opening work at relatively low temperature, can further improve the serviceable life showing 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 relatively flexible, but has increased the complexity of circuit.Therefore, in another embodiment, a plurality of LASER Light Source 111 of light source module 11 can be divided into many groups, the LASER Light Source 111 in every group can connect by serial or parallel connection mode, and carries out independent control by 12 pairs of every group of LASER Light Source of control module 111.Now, control module 12 can be controlled one or more groups LASER Light Source 111 that specified Output optical power was not less than and approached most the required luminous power of demonstration in opening according to above-mentioned formula, and all the other group LASER Light Source 111 are in closed condition.Further, the in the situation that of needs, the drive current of respectively organizing LASER Light Source 111 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 111,15 LASER Light Source 111 can 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.Now, if show, required luminous power equals a half of the specified Output optical power of light source module 11, that group LASER Light Source 111 that control LASER Light Source quantity is 7 is in closed condition, control LASER Light Source quantity simultaneously and be two groups of LASER Light Source 111 of 5 and 3 in opening, the drive current of these two groups of LASER Light Source 111 is finely tuned, so that the actual Output optical power of light source module 11 equals to show required luminous power simultaneously.
As shown in Figure 3, in another embodiment of the present invention, can by control module 12 produce pulse-width signals control at least one LASER Light Source 111 periodically in opening and closing state so that the actual Output optical power of light source module 11 equals to show required luminous power.For example, first control module 12 is determined the dutycycle of pulse-width signal according to the ratio that shows the specified Output optical power of required luminous power and light source module 11, and produce the pulse-width signal with this dutycycle and send to each LASER Light Source 111 in light source module 11, and then control each LASER Light Source 111 periodically in opening and closing state.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 is low level signal, whole LASER Light Source 111 of light source module 11 are in closed condition, and when pulse-width signal is high level signal, whole LASER Light Source 111 of light source module 11 are in opening.Because three kinds of pulse-width signals are controlled LASER Light Source 111 in the time of opening length difference, therefore can be so that light source module 11 produces different actual Output optical power.Certainly, in other embodiments, control module 12 also can only be controlled a part for whole LASER Light Source 111 as required periodically in 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 by pulse-width signal, the frequency 1/T of the pulse-width signal that control module 12 produces should design in conjunction with the modulating frequency of the light-modulating cell showing for image, be generally image is not glimmered when watching, conventionally the Frequency Design of the pulse-width signal of control module 12 is become to the more than two times of maximum modulating frequency of the light-modulating cell showing for image.
Compared to prior art, the demonstration of the embodiment of the present invention is controlled a plurality of LASER Light Source 111 in open or closed condition by control module 12 according to the required luminous power of demonstration with light-source system 10, make LASER Light Source 111 under the state of relatively high output efficiency, carry out work, optimized the output efficiency of light source module 11.
Refer to 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 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 for demonstration.
Show and can adopt above-described various types of demonstration light-source system with light-source system 21, and comprise light source module 211 and control module 212.Light source module 211 comprises a plurality of LASER Light Source (not shown), and control module 212 is controlled the plurality of LASER Light Source in opening or closed condition according to the required luminous power of demonstration.The laser that LASER Light Source in opening produces carries out light path merging through suitable Multiplexing apparatus (not shown).Multiplexing apparatus can be optical fiber combiner well known in the art or close the various elements such as light microscopic.Laser after light path merges preferably incides on colour wheel 23 after shaping lens 22 or other optical element shapings.
Colour wheel 23 comprises at least two look sections.When the laser after shaping incides in the look section of a certain color, this look section can produce the light of corresponding color.For example, the laser that light source module 211 produces is blue laser or ultraviolet laser.In at least part of look section of colour wheel 23, be provided with material for transformation of wave length, for example fluorescent material or nano material.This material for transformation of wave length can convert using laser as exciting light the Stimulated Light of respective color to.Certainly, part look section can not arrange material for transformation of wave length yet, but direct transmission laser.For example, when laser is blue laser, part look section is transmit blue laser directly.
Further, these at least two the look sections on colour wheel 23 can be under the effect of motor (not shown) or other driving mechanisms be arranged in turn and periodically and show with the going out on light path of light-source system 21, and then produce 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 to be arranged at and to show going out on light path with light-source system 21 in turn and periodically.In other embodiments, colour wheel 23 can also be taked other designs, for example the 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 showing 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 colour wheel synchronizing signal.For example, colour wheel detecting module 24 can be surveyed the mark being attached in colour wheel 23 or CD-ROM drive motor rotating shaft, and after detecting this mark, produces a colour wheel synchronizing pulse at every turn, and then produces 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 the various suitable optic modulating devices such as MEMS (micro electro mechanical system) (MEMS) and liquid crystal display (LCD or LCoS).Light-modulating cell 27 further receives colour wheel synchronizing signal, and determines that according to 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 colour wheel synchronizing signal to colorama sequence, does not repeat them here.Colorama sequence after light-modulating cell 27 modulation further projects on screen through camera lens 28.
In a preferred embodiment, control module 22 further receives colour wheel synchronizing signal, and adjustment shows required luminous power according to colour wheel synchronizing signal, to meet different demonstration demands.
For example, in white light enhanced scheme, colour wheel 23 for example,, except arranging outside photochromic section of at least one primary colours (, red light color section, blue light color section or green light color section), also further arranges white light and strengthens look section, to produce white light or gold-tinted.Wherein, the brightness that white light or gold-tinted show for strengthening white light.In order to meet different demonstration demands, the present embodiment is designed multiple-working mode, comprises at least two kinds in normal mode, film mode and document mode.Wherein, normal mode requires photochromic section of primary colours and white light to strengthen the identical or maintenance predetermined difference of the brightness of the light that look section produces.It is relatively low that film mode requires white light to strengthen the brightness of the light that look section produces, and require the brightness of light of photochromic section of generation of primary colours relatively high, to realize higher color saturation.It is relatively high that document mode requires white light to strengthen the brightness of the light that look section produces, and require the brightness of light of photochromic section of 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 determines that according to colour wheel synchronizing signal white light strengthens look section and enters and leave the time that goes out light path showing with light-source system 21, and white light strengthen look section in show with light-source system 21 go out on light path time the relative normal mode of the required luminous power of demonstration is reduced, for example be reduced to 1/2 of normal mode, the actual Output optical power of light source module 211 is reduced, reduce thus the brightness that white light strengthens the light of look section generation, improve color saturation.In addition, control module 22 also determines that according to colour wheel synchronizing signal photochromic section of primary colours enter and leave the time that goes out light path showing with light-source system 21, and photochromic section of primary colours in show with light-source system 21 go out on light path time the relative normal mode of the required luminous power of demonstration is improved, for example bring up to normal mode 1.2 times, the actual Output optical power of light source module 211 is raise, improve thus the brightness of the light of photochromic section of generation of primary colours, improve color saturation.Further, white light can be strengthened like this to the electric energy that look section saves and leave photochromic section of primary colours for, and then change little in the situation that in general power, the high-performance realizing under film mode shows.Certainly, those skilled in the art only can expect that the required luminous power of demonstration that white light is strengthened to photochromic section of the required luminous power of demonstration of look section or primary colours regulates completely.
Under document mode, control module 22 determines that according to colour wheel synchronizing signal white light strengthens look section and enters and leave the time that goes out light path showing with light-source system 21, and white light strengthen look section in show with light-source system 21 go out on light path time the relative normal mode of the required luminous power of demonstration is improved, for example bring up to 1.5 times of normal modes, the actual Output optical power of light source module 211 is improved, the brightness that improves thus the light of white light enhancing look section generation, improves document display effect.In addition, control module 22 also determines that according to colour wheel synchronizing signal photochromic section of primary colours enter and leave the time that goes out light path showing with light-source system 21, and photochromic section of primary colours in show with light-source system 21 go out on light path time the relative normal mode of the required luminous power of demonstration is reduced, for example be reduced to 1/2 of normal mode, the actual Output optical power of light source module 211 is reduced, reduce thus the brightness of the light of photochromic section of generation of primary colours.Further, photochromic section of electric energy saving of primary colours can be left like this for to white light and strengthen look section, and then change little in the situation that in general power, realize the high-performance under document mode and shown.Certainly, those skilled in the art only can expect that the required luminous power of demonstration that white light is strengthened to photochromic section of the required luminous power of demonstration of look section or primary colours regulates completely.
In another embodiment, once of all kinds section of colour wheel 23 determine after, the duration of the colorama of the different colours of of all kinds section of generation has just been determined.Now, control module 22 according to not homochromy section of colour wheel synchronizing signal adjustment be arranged at light source module 211 go out on light path time the required luminous power of demonstration, the brightness of colorama of the different colours of of all kinds section of generation can be adjusted, and then the color of mixed light can be adjusted.
According to colour wheel synchronizing signal, adjustment shows that the mode of required luminous power can have multiple to control module 22.For example, in the situation that colour wheel 23 comprises red, green and blue look section, can be preset in control module 22 one show required luminous power P0, when control module 22 according to colour wheel synchronizing signal determine red color segment be arranged at light source module 211 go out on light path time, control module 22 is using the required luminous power P0 of preset demonstration as the required luminous power of the demonstration corresponding with red color segment; When control module 22 according to colour wheel synchronizing signal determine green segment be arranged at light source module 211 go out on 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 preset demonstration; When control module 22 according to colour wheel synchronizing signal determine blue section be arranged at light source module 211 go out on light path time, control module 22 reduces the required luminous power P2 of demonstration that the first predetermined difference value Δ p2 obtains and blue section is corresponding on the required luminous power P0 of preset demonstration.Below be according to colour wheel synchronizing signal, directly to calculate to obtain to show required luminous power for example, be understandable that, also can preset one comprise look section and the mapping table that shows the corresponding relation of required luminous power, and according to obtaining and show required luminous power by the definite look segment search mapping table of colour wheel synchronizing signal.
In addition, it should be noted that, above embodiment has only enumerated the adjustment according to colour wheel synchronizing signal and has shown required luminous power, and in fact, control module 22 also can be according to 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 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.
Refer to 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 showing with light-source system, and control method comprises the steps:
S1: determine and show required luminous power.
S2: according to showing that required luminous power controls a plurality of LASER Light Source in light source module in opening or closed condition, so that the actual Output optical power of light source module equals to show required luminous power.
As described above, in step S1, can show required luminous power according to the adjustment of colour wheel synchronizing signal, to meet different demonstration demands.
As described above, in an embodiment of step S2, according to a part of LASER Light Source in the required luminous power control of demonstration light source module, in closed condition, remainder is in opening.Wherein, when the specified Output optical power of each LASER Light Source is identical, can determine by following formula the quantity of the LASER Light Source in closed condition:
M＝int(N-P/P0)
Wherein, M is the quantity of the LASER Light Source in closed condition, and N is the quantity of LASER Light Source in light source module, and P is the required luminous power of demonstration, the specified Output optical power that P0 is LASER Light Source, and int is rounding operation.
Further, the actual Output optical power of controlling the LASER Light Source in opening equals specified Output optical power separately, and its actual output efficiency is preferably not less than 90% of the highest output efficiency.Or, can carry out trim process to the drive current of the LASER Light Source in opening, so that LASER Light Source is worked under relatively high efficiency state.Wherein, when the drive current of the LASER Light Source in opening is finely tuned, the actual output efficiency of controlling LASER Light Source is not less than 80% of the highest output efficiency separately.In addition, in a preferred embodiment, when closing LASER Light Source, preferentially select the LASER Light Source of the respective numbers that temperature is the highest to close.
As described above, in another embodiment of step S2, according to showing that required luminous power produces a pulse-width signal, to control at least one LASER Light Source periodically in opening and closing state.
In sum, the present invention is by according to showing that a part that required luminous power is controlled a plurality of LASER Light Source is in opening, remainder is in closed condition, or control at least part of LASER Light Source periodically in opening and closing state, can be so that the LASER Light Source in opening, in the state work of relatively high output efficiency, thereby realizes the output efficiency optimization of light source module.In addition,, on the above-mentioned basis of the present invention, further according to colour wheel synchronizing signal, adjust and show required luminous power, and then meet different demonstration demands.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (13)
1. a demonstration light-source system, is characterized in that, described demonstration comprises with light-source system:
Light source module, described light source module comprises a plurality of LASER Light Source;
Control module, described control module is for according to showing that required luminous power selects M LASER Light Source at the most to close from described a plurality of LASER Light Source, and all the other LASER Light Source are in opening, described M=int (N-P/P0),
Wherein, M is the quantity of the LASER Light Source in described closed condition, and N is the quantity of the LASER Light Source in described light source module, and P is the required luminous power of described demonstration, the specified Output optical power that P0 is described LASER Light Source, and int is rounding operation;
When described control module is also greater than the required luminous power of described demonstration for the actual Output optical power at described light source module, further the drive current of the LASER Light Source in described opening is finely tuned, so that the actual Output optical power of described light source module equals the required luminous power of described demonstration.
2. demonstration light-source system according to claim 1, is characterized in that, described control module also, for obtaining colour wheel synchronizing signal, is adjusted the required luminous power of described demonstration according to described colour wheel synchronizing signal.
3. demonstration light-source system according to claim 1, it is characterized in that, when described control module, selecting M LASER Light Source from described a plurality of LASER Light Source closes, all the other LASER Light Source are when opening, the actual Output optical power of the described LASER Light Source in opening equals specified Output optical power separately, and while working under the state of described LASER Light Source at specified Output optical power, the actual output efficiency of described LASER Light Source is not less than 90% of the highest output efficiency separately.
4. demonstration light-source system according to claim 1, it is characterized in that, when described control module is finely tuned the drive current of the LASER Light Source in opening, the actual output efficiency of the LASER Light Source in described opening after fine setting is not less than 80% of the highest output efficiency separately.
5. demonstration light-source system according to claim 2, is characterized in that, described a plurality of LASER Light Source are divided into many groups, and described control module is carried out independent control to every group of LASER Light Source.
6. demonstration light-source system according to claim 2, is characterized in that, described control module produces a pulse-width signal according to the required luminous power of described demonstration, to control at least one described LASER Light Source periodically in opening and closing state.
7. a projection arrangement, is characterized in that, described projection arrangement comprises the demonstration light-source system described in claim 2-6 any one.
8. projection arrangement according to claim 7, is characterized in that, described projection arrangement further comprises colour wheel and colour wheel detecting module, and described colour wheel detecting module is surveyed the position of described colour wheel, and produces described colour wheel synchronizing signal.
9. projection arrangement according to claim 8, it is characterized in that, described colour wheel comprises that white light strengthens photochromic section of look section and primary colours, described control module determines that according to described colour wheel synchronizing signal described white light strengthens photochromic section of look section and described primary colours and enters separately and leave described demonstration with the time that goes out light path of light-source system, the mode of operation of described projection arrangement comprises normal mode, in document mode and film mode at least two kinds, wherein under described document mode, described control module described white light strengthen look section in described demonstration with light-source system go out on light path time relatively described normal mode improve the required luminous power of described demonstration, to improve described white light, strengthen the brightness of the light of look section generation, and/or described control module photochromic section of described primary colours in described demonstration with light-source system go out on light path time relatively described normal mode reduce the required luminous power of described demonstration, to reduce the brightness of the light of photochromic section of generation of described primary colours, under described film mode, described control module described white light strengthen look section in described demonstration with light-source system go out on light path time relatively described normal mode reduce the required luminous power of described demonstration, to reduce described white light, strengthen the brightness of the light of look section generation, and/or described control module photochromic section of described primary colours in described demonstration with light-source system go out on light path time relatively described normal mode improve the required luminous power of described demonstration, to improve the brightness of the light of photochromic section of generation of described primary colours.
10. show the control method with light-source system, it is characterized in that described control method:
Determine and show required luminous power;
According to the required luminous power of described demonstration, from comprise the light source module of a plurality of LASER Light Source, select M LASER Light Source to close, all the other LASER Light Source are in opening, described M=int (N-P/P0),
Wherein, M is the quantity of the LASER Light Source in described closed condition, and N is the quantity of the LASER Light Source in described light source module, and P is the required luminous power of described demonstration, the specified Output optical power that P0 is described LASER Light Source, and int is rounding operation;
When the actual Output optical power of described light source module is greater than the required luminous power of described demonstration, further the drive current of the LASER Light Source in described opening is finely tuned, so that the actual Output optical power of described light source module equals the required luminous power of described demonstration.
11. control methods according to claim 10, is characterized in that, describedly according to the required luminous power of described demonstration, from comprise the light source module of a plurality of LASER Light Source, select M LASER Light Source to close, and the step of all the other LASER Light Source in opening comprises:
According to the required luminous power of described demonstration, produce a pulse-width signal, to control described a plurality of LASER Light Source periodically in opening and closing state, and in each cycle, the LASER Light Source quantity in closed condition is M.
12. control methods according to claim 11, is characterized in that, the step of the required luminous power of described definite demonstration comprises:
Obtain colour wheel synchronizing signal, according to this colour wheel synchronizing signal, adjust the required luminous power of described demonstration.
13. control methods according to claim 12, is characterized in that, the described method of adjusting the required luminous power of described demonstration according to colour wheel synchronizing signal comprises:
According to described colour wheel synchronizing signal, determine that white light on colour wheel strengthens photochromic section of look section and primary colours and enters separately and leave described demonstration with the time that goes out light path of light-source system, described demonstration comprises normal mode by the mode of operation of light-source system, in document mode and film mode at least two kinds, under document mode, described white light strengthen look section in described demonstration with light-source system go out on light path time relative normal mode improve the required luminous power of described demonstration, to improve described white light, strengthen the brightness of the light of look section generation, and/or photochromic section of described primary colours in described demonstration with light-source system go out on light path time relatively described normal mode reduce the required luminous power of described demonstration, to reduce the brightness of the light of photochromic section of generation of described primary colours, under film mode, described white light strengthen look section in described demonstration with light-source system go out on light path time relatively described normal mode reduce the required luminous power of described demonstration, to reduce described white light, strengthen the brightness of the light of look section generation, and/or photochromic section of described primary colours in described demonstration with light-source system go out on light path time relatively described normal mode improve the required luminous power of described demonstration, to improve the brightness of the light of photochromic section of generation of described primary colours.
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| CN107664905A (en) * | 2016-07-29 | 2018-02-06 | 深圳市光峰光电技术有限公司 | The method of projection arrangement, light-source system and its control electric current |
| CN108990224B (en) * | 2017-06-02 | 2021-05-04 | 深圳市绎立锐光科技开发有限公司 | Laser optical fiber lighting system, indoor lighting system and outdoor lighting system |
| CN113741132B (en) | 2017-07-06 | 2024-02-02 | 深圳光峰科技股份有限公司 | Projector control system and control method |
| CN109960097B (en) * | 2017-12-22 | 2021-08-31 | 成都理想境界科技有限公司 | Monochromatic laser light source, color laser light source and laser projection equipment |
| CN110068982B (en) | 2018-01-23 | 2021-09-21 | 深圳光峰科技股份有限公司 | Projection device and color gamut adjusting method |
| WO2019174436A1 (en) | 2018-03-12 | 2019-09-19 | Oppo广东移动通信有限公司 | Control method, control device, depth camera and electronic device |
| CN108227361B (en) * | 2018-03-12 | 2020-05-26 | Oppo广东移动通信有限公司 | Control method, control device, depth camera and electronic device |
| CN108333860B (en) * | 2018-03-12 | 2020-01-10 | Oppo广东移动通信有限公司 | Control method, control device, depth camera and electronic device |
| CN109300429A (en) * | 2018-12-07 | 2019-02-01 | 四川长虹电器股份有限公司 | Laser Control System for laser display |
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Effective date of registration: 20180119 Address after: 101399 No. 25, Shunyi District Shun Road, Beijing City, 5 Patentee after: Zhongying Guangfeng Laser Theater Technology (Beijing) Co., Ltd. Address before: 518000, Guangdong, Nanshan District Shenzhen science and Technology Park, South Road, twelve square building, third floor Patentee before: Shenzhen Appotronics Co., Ltd. |