CN105223762A - Light source output control method, system and laser projection device - Google Patents
Light source output control method, system and laser projection device Download PDFInfo
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- CN105223762A CN105223762A CN201510738951.3A CN201510738951A CN105223762A CN 105223762 A CN105223762 A CN 105223762A CN 201510738951 A CN201510738951 A CN 201510738951A CN 105223762 A CN105223762 A CN 105223762A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
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Abstract
The present invention discloses a kind of light source output control method, non-coaxial is provided with the first colour wheel and the second colour wheel, two colour wheels are respectively arranged with the first mark and the second mark, according to the first sync mark of acquisition and first group of induced signal of the second sync mark, synchronous first colour wheel and the second colour wheel; And the second induced signal is obtained from the second colour wheel output light path, according to the second induced signal subsynchronous first colour wheel and the second colour wheel again, wherein, described second induced signal is the voltage waveform signal of corresponding different colours, export three primary colours through the second colour wheel timing, the precisely synchronous of two colour wheels can be realized, eliminate the mixed color phenomenon in the second colour wheel output procedure, improve the monochromatic purity of three primary colours and brightness, high-quality lighting source can be provided.Present invention also offers the control system of corresponding above-mentioned light source output control method, and apply the laser projection device of above-mentioned control system and method.
Description
Technical field
The present invention relates to LASER Light Source technical field, particularly relate to the double-colored of a kind of light source and take turns synchronisation control means, system and laser projection device.
Background technology
The fluorescence that the LASER Light Source used in current industry is excited to produce by laser and fluorescent powder forms, usually using blue laser as exciting light light source, simultaneously also as the blue light of one of red-green-blue.Fluorescent wheel is a kind of Wavelength converter, in order to produce the other two kinds of primary lights except blue light.In a kind of implementation of prior art, blue laser is got on fluorescent wheel and green emitting phosphor and yellow fluorescent powder can be excited to produce green light and sodium yellow respectively, and the green color filter of colour wheel and Red lightscreening plate colour filter obtain green and red light after filtration, blue laser does not need colour filter, clear area directly through fluorescent wheel and filter wheel enters light path system, thus finally exports red-green-blue from filter wheel.
If blue laser does not pass according to the mode of setting the position that filter wheel is corresponding below through fluorescent wheel or after fluorescent wheel exports fluorescence, such as when fluorescent wheel starts to export green glow, filter wheel rotates to ruddiness filter area, then cannot normally export green monochromatic light, as shown in Figure 1 double-colored takes turns plane color subregion schematic diagram, solid line represents the color partition boundaries of the first colour wheel (fluorescent wheel), the color partition boundaries of represented by dotted arrows second colour wheel (filter wheel), coincidence is not completed by the partition boundaries line of known two colour wheels of diagram, but at an angle, because the color subregion on two colour wheels and order are fixed, the marginal of a kind of color does not overlap and then causes the separatrix of other two kinds of colors also not overlap, offset same angle.In colour wheel rotary course, light, through the region of angular deflection, just causes colour mixture, and forms the colour mixture phase of three time periods in a swing circle, and needing removal colour mixture only to retain monochromatic light could use as lighting source.
Known above, the generation of mixed color phenomenon be mainly due to double-colored take turns asynchronously to cause.
A kind of mode removing colour mixture in prior art is, employing coaxial configuration is taken turns to double-colored, i.e. coaxial connection, need accurately corresponding for the boundary line of the same color subregion in fluorescent powder wheel and filter wheel under this frame mode, namely the projection that on two-wheeled, same color subregion boundary line is axially gone up overlaps, but because assembly technology difficulty is high, all the time exist due to two colour wheels and the fixing of rotating shaft by processing and install the offset error caused, the mixed color phenomenon that this error causes can only ensure the purity that color exports and timing by being rejected the colour mixture period, thus cause the reduction of monochromatic brightness.
Need the output intent proposing a kind of light source, can mixed color phenomenon be eliminated and ensure each monochromatic output brightness.
Summary of the invention
The object of this invention is to provide a kind of light source output control method, system and laser projection device, solve mixed color phenomenon during light source output three primary colours.
The object of the invention is to be achieved through the following technical solutions:
A kind of light source output control method is proposed, be applied to light source to export, this light source comprises laser instrument, first colour wheel and the second colour wheel, laser instrument sends laser, irradiate described first colour wheel and produce fluorescence, laser and fluorescence are respectively by color subregion outgoing corresponding on the second colour wheel, first colour wheel and the second colour wheel have identical color subregion, and first colour wheel and the second colour wheel arrange the first sync mark, the second sync mark respectively, wherein, the first sync mark and the second sync mark are alignd with the same position of the first colour wheel and the second colour wheel respectively; This output control method comprises:
According to the first sync mark of acquisition and first group of induced signal of the second sync mark, synchronous first colour wheel and the second colour wheel;
From the second colour wheel output light path, obtain the second induced signal, and according to the second induced signal subsynchronous first colour wheel and the second colour wheel again, wherein, the second induced signal is the voltage waveform signal of corresponding different colours;
Three primary colours are exported through the second colour wheel timing.
A kind of light source output control system is proposed, comprise laser instrument, first colour wheel and the second colour wheel, be separately positioned on the first sync mark on the first colour wheel and the second sync mark on the second colour wheel, wherein, the first sync mark and the second sync mark are alignd with the same position of the first colour wheel and the second colour wheel respectively;
First sensor, and the second sensor, be respectively used to detect and obtain first group of induced signal of the first sync mark, the second sync mark;
Control module, for according to first group of synchronous first colour wheel of induced signal and the second colour wheel;
3rd sensor, for obtaining the second induced signal from the second colour wheel output light path, wherein, the second induced signal is the voltage waveform signal of corresponding different colours.
And control module is also for according to the second induced signal subsynchronous first colour wheel and the second colour wheel again.
Propose a kind of laser projection device, comprise above-mentioned light source output control system.
Embodiment of the present invention technical scheme, its technique effect had or advantage are:
The light source output control method that the embodiment of the present invention proposes, by arranging the first sync mark respectively on the first colour wheel and the second colour wheel, second sync mark, according to first group of induced signal of the above-mentioned sync mark of correspondence obtained, wherein, first group of induced signal show respectively the synchronization extent of the first sync mark under synchronization and the second sync mark, because the first sync mark and the second sync mark are alignd with the same position of the first colour wheel and the second colour wheel respectively, can synchronous first colour wheel and the second colour wheel on this basis, above-mentioned is synchronously preliminary synchronisation based on sync mark, and, the second induced signal is obtained from the second colour wheel output light path, second induced signal is the voltage waveform signal of corresponding different colours, due to the monochromatic light that laser and fluorescence are three kinds of colors, therefore the second induced signal comprises the voltage waveform of at least three kinds of different amplitudes, and owing to marking the voltage jump situation of the color intersection that rigging error causes, the i.e. colour mixture period, the actual conditions that can export according to color are subsynchronous again, by the output three primary colours monochromatic light of the second colour wheel timing, above-mentioned light source output control method can pass through two subsynchronous effective elimination mixed color phenomenons, and ensure that colour brightness and the timing of the three primary colours exported from the second colour wheel.
The invention allows for the synchronous control system of the above-mentioned synchronisation control means of a kind of correspondence, can two subsynchronous effective elimination mixed color phenomenons be passed through, and ensure that colour brightness and the timing of the three primary colours exported from the second colour wheel.
The invention allows for a kind of laser projection device, based on light source output control method and system, effectively can eliminate mixed color phenomenon, and ensure the colour brightness and the timing that export three primary colours, be beneficial to the color saturation and display quality that improve projected image.
Accompanying drawing explanation
Fig. 1 double-coloredly in prior art takes turns plane color subregion schematic diagram;
Fig. 2 be the embodiment of the present invention 1 propose there is the double-colored LASER Light Source structural representation of taking turns of non-coaxial;
Fig. 3 is a kind of colour wheel of the embodiment of the present invention 1 proposition and the corresponding relation schematic diagram of mark;
Fig. 4 is another colour wheel of the embodiment of the present invention 1 proposition and the corresponding relation schematic diagram of mark;
Fig. 5 is the light source output control method process flow diagram that the embodiment of the present invention 1 proposes;
Fig. 6 is the light source output control method decomposition process figure that the embodiment of the present invention 2 proposes;
Fig. 7 is the oscillogram of first group of induced signal in the embodiment of the present invention 2;
Fig. 8 double-coloredly in the embodiment of the present invention 2 takes turns just subsynchronous rear schematic diagram;
Fig. 9 is the pulse signal schematic diagram in the embodiment of the present invention 2;
Figure 11 is sync mark rigging error schematic diagram;
Figure 10 is the another light source output control method decomposition process figure proposed in the embodiment of the present invention 2;
Figure 12 is the embodiment of the present invention 2 second induced signal voltage waveform view;
Figure 13 is the light source output control system frame diagram that the embodiment of the present invention 3 proposes;
Figure 14 is the schematic diagram of the laser projection device that the embodiment of the present invention 4 proposes;
Figure 15 is LASER Light Source structural representation in the embodiment of the present invention 4.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing, the technical scheme that the embodiment of the present invention provides is described in detail.
Embodiment one
The present invention aims to provide a kind of light source output control method, is applied to double-colored wheel in the light source of non-coaxial design.This light source as shown in Figure 2, comprises laser instrument 0, the first colour wheel 1 and the second colour wheel 2.Wherein, laser instrument 0 sends laser, irradiates the first colour wheel 1 and produces fluorescence, and laser and fluorescence are respectively by color subregion outgoing corresponding on the second colour wheel 2.First colour wheel 1 and the second colour wheel 2 have identical color subregion, thus laser can pass color subregion corresponding to two colour wheels with the period with fluorescence.
Double-colored take turns non-coaxial positional structure exemplary relationship can be as shown in Figure 2, first colour wheel 1 and the second colour wheel 2 are connected to CD-ROM drive motor rotating shaft 12 and 22 and do periodic rotational movements to drive wheel face, wherein, the elongated central line of CD-ROM drive motor rotating shaft 12 and 22 intersects at angle, it can be acute angle, right angle or obtuse angle, in this example in vertical relation.Also namely, the rotating shaft non-coaxial of the first colour wheel 1 and the second colour wheel 2, accordingly, two colour wheel wheel face place planes neither space parallel relation, but intersects at an angle.In the illustrated example shown in fig. 2, a kind of position only giving the first colour wheel and the second colour wheel rotating shaft arranges relation, does not limit therewith.
Wherein, first colour wheel can be fluorescent wheel, fluorescent wheel has green emitting phosphor district, blue laser transmission area, yellow fluorescent powder district is (because red fluorescence powder launching efficiency is low, therefore substitute with yellow fluorescent powder, but the effect obtaining ruddiness according to its final filtration still can be described as red subregion), second colour wheel can be filter wheel, filter wheel has green color district, blue laser transmission area, red color filter district respectively with the green emitting phosphor district on fluorescent wheel, blue laser transmission area, yellow fluorescent powder district has identical angle and order distribution.Wherein red color filter district is corresponding with yellow fluorescent powder district, obtains red fluorescence, thus export red, green, blue three primary colours successively from filter wheel for filtering from yellow fluorescence.
Particularly, the first colour wheel 1 being provided with the first sync mark 11, the second colour wheel 2 is provided with the second sync mark 21, particularly, is the CD-ROM drive motor side surface laying respectively at the first colour wheel and the second colour wheel.Further, the first sync mark 11 is corresponding with the position of the second sync mark 21 on respective affiliated colour wheel.Owing to there is corresponding color subregion on the first colour wheel and the second colour wheel; usual meeting with color subregion as a reference; first sync mark 11 and the setting position of the second sync mark 12 in CD-ROM drive motor rotating shaft 12 and 22 are alignd with color subregion a certain on affiliated colour wheel, thus is convenient to comparison two and marks whether that position corresponds to each other.In one is specifically implemented, as shown in Figure 3, first sync mark 11 aligns with the border of same color subregion on affiliated colour wheel in the reference position of CD-ROM drive motor rotating shaft 22 side surface respectively in the reference position of CD-ROM drive motor rotating shaft 12 side surface and the second sync mark 21, on the reference position of setting mark and colour wheel, the boundary of a certain color aligns, the boundary of this color is the reference reference position for mark on colour wheel, particularly such as, the reference position of the first sync mark 11 and the border of the first colour wheel 1 Green subregion align, the border of the green partition in the reference position of the second sync mark 21 and the second colour wheel 2 aligns, because color in colour wheel is that subregion is connected with each other, therefore in this example, border refers to the separatrix of two kinds of colors, can be regarded as the boundary position of green partition and next color.Those skilled in the art's easy understand and derivation, the first sync mark and the second sync mark also can be positioned at the position, boundary of other any two colors, as long as any two colors on two colour wheels are same case.
Certainly, in another specific embodiment, also can be as shown in Figure 4, all with same color boundaries apart from identical displacement, two marks are departing from of φ angle with the border of green partition on two colour wheels respectively, equally also be the corresponding example in the position be marked on two colour wheels, now, radial line colour wheel departing from green partition border φ angle is the reference reference position of colour wheel for mark.
Also mention in aforementioned prior art, first colour wheel and the second colour wheel need each color subregion to correspond to each other when rotated, when the first colour wheel rotates to green partition, second colour wheel also will rotate to green partition (actual functional capability carries out colour filter to green), guarantee is green through the color of the light of the second colour wheel outgoing, otherwise overlap and the sequential confusion of color may be there is, normally cannot form three primary colours to export, the x ray machine part of rear end also cannot normally be resolved and modulate primary lights and normally show image.
The light source output control method of the embodiment of the present invention is described below in conjunction with Fig. 5.
As shown in Figure 5, method comprises the following steps:
Step S1: according to the first sync mark of acquisition and first group of induced signal of the second sync mark, synchronous first colour wheel and the second colour wheel;
In this method step, first group of induced signal show respectively the synchronization extent of the first sync mark under synchronization and the second sync mark, because the first sync mark and the second sync mark are alignd with the same position of the first colour wheel and the second colour wheel respectively, can synchronous first colour wheel and the second colour wheel on this basis, above-mentioned is synchronously preliminary synchronisation based on sync mark.
Step S2: obtain the second induced signal from the second colour wheel output light path, and according to the second induced signal subsynchronous first colour wheel and the second colour wheel again, wherein, the second induced signal is the voltage waveform signal of corresponding different colours;
Because final light source exports three primary colours light, therefore laser and fluorescence are the monochromatic light of three kinds of colors, obtain from the output light path of the second colour wheel during the second induced signal, therefore the second induced signal comprises the voltage waveform of at least three kinds of different amplitudes, and owing to marking the voltage jump situation of the color intersection that rigging error causes, the i.e. colour mixture period, and then the actual colour mixture situation that can export according to color is carried out subsynchronous again.
Step S3: export three primary colours through the second colour wheel timing.
By above-mentioned two subsynchronous after, improve and double-coloredly take turns synchronous degree of accuracy, eliminate mixed color phenomenon, thus can from the output three primary colours of the normal timing of the second colour wheel, and monochromatic brightness is not affected, high-quality lighting source can be provided for follow-up x ray machine part.
Embodiment two
The embodiment of the present invention two is improvement on the basis of embodiment one and refinement.
Wherein, for step S1: according to the first sync mark of acquisition and first group of induced signal of the second sync mark, synchronous first colour wheel and the second colour wheel specifically comprise as shown in Figure 6:
Step S11: in a swing circle, obtains the induced signal of corresponding first sync mark and the second sync mark respectively, is designated as first group of inductive impulse signal.
In this method embodiment, sync mark can be black thin film or black belt or carbonization mark, black has extinction effect, therefore the signal that sends of sensor is in the process of CD-ROM drive motor axis of rotation, be predominantly absorbed when running into the density bullet of above-mentioned rotating shaft side surface, the signal reflex that sensor sends then is returned thus is detected by sensor by the unmarked part in motor shaft side, therefore, when using sensor to detect the mark rotation status on the first colour wheel and the second colour wheel, the situation that the light signal sent by sensor is absorbed and reflects can sense the first sync mark and the second sync mark existence and formed low and high level formed pulse signal, thus in a swing circle, get the induced signal of corresponding first sync mark respectively, and the induced signal of corresponding second sync mark, these two induced signals are used as first group of induced signal.
Here swing circle, refers to the time that two colour wheels rotate a circle separately.During system initial start, at the uniform velocity rotate after two colour wheels accelerate to identical rotating speed simultaneously in the same way, make the first sync mark and the second sync mark geo-stationary, then in a swing circle, obtain first group of induced signal of corresponding first sync mark and the second sync mark respectively.
Step S12: the rising edge or the negative edge that compare synchronization first group of induced signal.
In the induced signal of corresponding first sync mark and the second sync mark, include the rect.p. with rising edge or negative edge of embodiment first sync mark and the second sync mark existence respectively.
In a swing circle, if the first colour wheel and the non-synchronous rotary of the second colour wheel, then the first sync mark and the second sync mark have position difference at the rising edge of synchronization or negative edge.Or, show as the first sync mark and the second sync mark has time difference through same position.
As shown in Figure 7, first colour wheel and the second colour wheel rotate a circle, the rect.p. that first sync mark is corresponding and rect.p. corresponding to the second sync mark, on synchronization, the position of pulse has difference, or the beginning and ending time of pulse has time difference on same position, show as and do not overlap at its rising edge of synchronization or negative edge.
Step S13: according to rising edge or the negative edge difference of first group of induced signal, adjust the rotating speed of the first colour wheel and the second colour wheel, makes the rising edge of the first induced signal or negative edge overlap, completes just subsynchronous.
Particularly, as shown in Figure 7, the inductive waveform corresponding according to the first sync mark in first group of induced signal and inductive waveform corresponding to the second sync mark, the time difference between two of two colour wheels marks can be obtained, the circumferential length difference S in two colour wheels between two marks can be calculated according to time difference, wherein, S=2 π nRt, n is rotating speed, and R is the radius of mark to colour wheel center, and t is the time, two colour wheels are synchronized when at the uniform velocity rotating, it is geo-stationary between two-wheeled, the rotating speed of one of them colour wheel then can be kept constant, and adjust the rotating speed of another colour wheel, shorten the circumferential length difference S between two marks, also the time difference between two marks is namely shortened, regulation time can be calculated by the computing formula of rotating speed and circumferential length, by controlling regulation time, circumferential length difference S is shortened to zero, time difference then between two marks is also zero, and then the rotating speed adjusting two colour wheels is identical at the uniform velocity rotates, thus realize the synchronous of two colour wheels.At this, only give a kind of method adjusting colour wheel rotating speed, the rotating speed of a colour wheel also can be kept constant, reduce the rotating speed of another colour wheel, calculate regulation time circumferential length difference being foreshortened to 0, again two-wheeled is driven according to same rotating speed after adjustment.
It should be noted that, in this method embodiment, first sync mark and the second sync mark Main Function are the sync bit marks as setting, the rotating speed of motor shaft and colour wheel can also be calculated according to the number of pulse signal in a swing circle of colour wheel simultaneously, play the effect detecting colour wheel rotating speed.Thus can the rotating speed of Real-time Obtaining colour wheel, the rotating speed of colour wheel is changed by the power etc. adjusting driving circuit.
Through the synchro control of above-mentioned steps, for two sync marks of same position on corresponding two colour wheels, the pulse signal rising edge being adjusted to two sync marks shown in Fig. 8 corresponding aligns, two sync marks namely completed synchronous.Due to the corresponding relation in sync mark and colour wheel, also just complete the preliminary synchronisation of two colour wheels.Two colour wheels has corresponding color subregion, and the order of color subregion is fixed, when colour wheel realizes basic synchronization, namely the same color subregion of two colour wheels is also corresponding all the time in rotary course, achieve matching relationship, when such as the first colour wheel rotates to green partition, so the second colour wheel also rotates to green partition just, thus achieves the output of green glow.Double-colored take turns synchronous basic goal be also make light at one time in section successively by same color subregion on two colour wheels, thus ensure the timing of each color in the three primary colours exported eventually through the second colour wheel.
But due to rigging error reason, may not have complete matching with the same position on two colour wheels as first sync mark of sync bit of setting and the second sync mark, same position is here interpreted as default reference reference position.The position of departing from green partition border φ angle in the border of such as Fig. 3 Green subregion or Fig. 4 can not be absolute alignment, the deviation of millimeter or more subsection rank may be there is, as shown in Figure 9, being marked at theoretic setting reference position is at green partition border GL line, but may exist during practical set and depart from the deviation that former reference position GL is φ 1 angle, namely the mark after assembling does not overlap with theory setting position completely, so two colour wheels same color reference position also just and unrealized definitely synchronous, then through the light of two colour wheel outgoing when rotating past in this deviation time section will still by two colour wheels in different color subregion, although this overlapping region is very little, but still can form the mixed light of different colours.This deviation not only has influence on a kind of color generation colour mixture simultaneously, because each color subregion is fixed and corresponds to each other, the dislocation in other words of this overlap can be extended in two kinds of colors below, other two kinds of colors are caused also colour mixture to occur, therefore once there be error, for three primary colours, within a cycle, have the colour mixture phase of 3 periods.
For eliminating the mixed color phenomenon that this error is brought, also need to perform step S2: from the second colour wheel output light path, obtain the second induced signal, and according to the second induced signal subsynchronous first colour wheel and the second colour wheel again.Particularly, as shown in Figure 10, step S2 comprises the following steps:
S21: obtain the second induced signal from described second colour wheel output light path;
From aforementioned, owing to there is rigging error as shown in figure 11, when arranging mark, first sync mark is apart from can not complete matching with reference to reference position and the second sync mark and the second colour wheel reference reference position with the first colour wheel, although so just cause the pulse signal of the sync bit of setting mark to be synchronized, the reference reference position of two colour wheels does not overlap completely at synchronization.As shown in Figure 9, the error of t1 time variable is there is in the first sync mark rising edge signal distance first colour wheel with reference to reference position, the error of t2 time variable is there is in the second sync mark rising edge signal distance second colour wheel with reference to reference position, wherein, t1, t2 are all more than or equal to 0, if the distance of the first sync mark distance first colour wheel reference reference position is zero, i.e. alignment just, so t1=0.Suppose t2>t1, in first group of induced signal after so first subsynchronous, between the first colour wheel and the second colour wheel, still there is the error of t2-t1 time variable.This error causes the superposition of color, form colour mixture look section, therefore consider from the actual output of color, reference the reference position of the first colour wheel and the second colour wheel will be in alignment with each other being adjusted to the synchronization in colour wheel rotary course, realize the first colour wheel and the second colour wheel precisely not synchronously.
Second colour wheel exports the light of three kinds of colors, by obtaining the light signal in this position light path, utilizes sensor to can be obtained up to the voltage waveform of few three kinds of different amplitudes, and owing to marking the voltage jump situation of the color intersection that rigging error causes.
Particularly, obtain the second induced signal oscillogram as shown in figure 12, this error in the second induced signal with voltage differences change Novel presentation out, because the second induced signal is a voltage waveform signal, different colors has different brightness, different brightness can be converted to different magnitudes of voltage by sensor, thus the different colours in the corresponding three primary colours of different voltage magnitude, because the voltage magnitude of the output of random color is determined, then between any two kinds of colors, voltage magnitude is saltus step, and color mixture shows as change in voltage unusual part between two kinds of colors.
S22: the magnitude of voltage bound-time threshold value obtaining described second induced signal;
As shown in Figure 12, determine the time variable t2-t1 of two kinds of color voltage magnitude saltus step unusual parts, this saltus step unusual part is magnitude of voltage bound-time threshold value, and when this time threshold is 0, two colour wheels realize accurate synchronous rotary.In a swing circle, there are three identical like this time periods, i.e. the colour mixture phase.
S23: adjust the rotating speed of the first colour wheel and the second colour wheel until magnitude of voltage bound-time threshold value is 0 with subsynchronous described first colour wheel and the second colour wheel again.
To the method for adjustment of the first colour wheel and the second colour wheel in the similar first synchronizing process of concrete method of adjustment, namely the time residual quantity t2-t1 shown in Figure 12 is obtained, and the rotating speed of current colour wheel is known by measurement markers pulse number, learn according to aforesaid computing formula, reach two colour wheels need process circumferential length S with reference to reference position alignment, afterwards, with the first colour wheel for benchmark, adjust the rotating speed of the second colour wheel, or, with the second colour wheel for benchmark, adjust the rotating speed of the first colour wheel, after circumferential length difference between two colour wheels or time difference are contracted to 0, adjust two synchronized rotations of colour wheel, magnitude of voltage bound-time threshold value is made to be 0, thus achieve the double-colored precise synchronization rotation taken turns, eliminate two kinds of color voltage magnitude saltus step unusual parts, thus eliminate two colour wheels mark because of rigging error cause asynchronous.The asynchronous of indication is reflected with the purity of the color of two colour wheels outputs herein.
Above-mentioned, first colour wheel and the second colour wheel first by just subsynchronous realize sync bit that two colour wheels set mark between synchronous, eliminate because the priority time sequence difference under same rotational speed in two colour wheel sync bit mark life periods, both rising edge of a pulses (or negative edge) overlap and represent that the mark of dichromatism wheel is synchronous, electric voltage exception situation of change is obtained by the change in voltage situation of the light in the light path to the second colour wheel outgoing, the i.e. colour mixture time period, thus eliminate setting sync bit mark and the rigging error with reference to reference position by secondary synchro control, reach double-colored take turns precisely synchronous, eliminate colour mixture, compare and existingly coaxially double-coloredly take turns synchronisation control means, the double-colored synchronisation control means of taking turns that the non-coaxial that the embodiment of the present invention provides is arranged, can according to the sync bit mark of setting, namely the induced signal being positioned at the second sync mark of the first sync mark of the first colour wheel and the second colour wheel corresponding carries out first synchro control, rigging error for mark also also can be eliminated with reference to the change of colour mixture time by again adjusting double-colored rotating speed of taking turns, thus be different from the identical all the time and situation that error exists all the time of coaxial double-colored wheel speed in prior art, the dirigibility of synchronisation control means provided by the invention is strong, can realize accurately double-colored take turns synchronous.And, owing to rejecting the color mixture between two kinds of colors without the need to the double-colored mode of taking turns the artificial adjustment of employing in scheme of the coaxial connection of picture, can improve and export monochromatic brightness, also improve the purity of the color that colour wheel exports, and the color saturation of system output image.Simultaneously relative to the mode of artificial adjustment, the synchronisation control means of the embodiment of the present invention not only saves cost of labor, and the color-match error caused because different people in manual shift mode is different to Color-sensitive degree can be eliminated, substantially increase double-colored precision of taking turns color-match.
And, when the reference reference position on colour wheel is positioned at color boundaries, the reference position of the first sync mark and the second sync mark also respectively with corresponding belonging to the same color boundaries of colour wheel align, thus according to the induced signal that sensor obtains, not only can weigh the synchronous degree of two marks, the rising edge (when effective impulse is high level pulse) of its pulse or negative edge (when effective impulse is low level pulse) also represent the initial time of the color of this reference original position, can by judging that the startup color of system is known in the arriving of pulse signal, because each color subregion and order are fixed on colour wheel, thus also can know the color sequential of system.Such as, when the green partition border of the first colour wheel, such as that the border adjacent with red subregion is as during with reference to reference position, the reference position of the first sync mark corresponds to green partition border, accordingly, the green partition border that the reference position of the second sync mark corresponds to the second colour wheel aligns, when sensor detects the pulse induction signal of the first sync mark and the second sync mark, known, the rising edge of induced signal pulse or negative edge represent the beginning of green color, and the order of three primary colours is green, blue, red such output order.When practical application, can by will the set-up mode that aligns with color boundaries of mark, be reached through induced indicia wheel speed of simultaneously checking colors and measure, synchronous compare, and judge color initial time and multiple action sequentially.Thus, when double-colored take turns reach synchronous time, also just reach normal timing and export the object of three primary colours.
Embodiment three
Based on above-mentioned light source output control method, the embodiment of the present invention also proposes a kind of light source output control system, as shown in figure 13, comprises the first colour wheel 21, first colour wheel 21 and comprises the first sync mark (not shown); Second colour wheel 22, second colour wheel 22 comprises the second sync mark (not shown), wherein the first sync mark is corresponding with the position of the second sync mark on corresponding affiliated colour wheel, and this system also comprises first sensor 23, second sensor 24, the 3rd sensor 25 and control module 26.
Wherein, first sensor 23, for detecting and obtaining the induced signal of the first sync mark of the first colour wheel, is infrared sensor or optical sensor; Second sensor 24, for detecting and obtaining the induced signal of the second sync mark of the second colour wheel, is infrared sensor or optical sensor; Wherein, the induced signal of the first sync mark and the induced signal of the second sync mark are designated as first group of induced signal.
Control module 26, for comparing rising edge or the negative edge of synchronization first group of induced signal; And according to the rising edge of first group of induced signal or the difference of negative edge, it is just subsynchronous that the rotating speed adjusting the first colour wheel 21 and the second colour wheel 22 makes the rising edge of first group of induced signal or negative edge overlap.
3rd sensor 25, for detecting and obtaining the second induced signal, this second induced signal is a voltage waveform signal, the magnitude of voltage that different colours is corresponding different; 3rd sensor 25 is photosensitive sensors or luminance sensor, is placed in the output light path of the second colour wheel 22; In specifically implementing one, the first colour wheel is fluorescent wheel, and the second colour wheel is filter wheel, and the 3rd sensor is placed in the output light path of filter wheel, obtains the light signal of the output primary lights after filter wheel colour filter.Control module 26 also for obtaining the magnitude of voltage bound-time threshold value in the second induced signal, and adjusts the rotating speed of the first colour wheel and the second colour wheel until magnitude of voltage bound-time threshold value is 0.
Particularly, refer again to double-colored positional structure schematic diagram of taking turns in Fig. 2, the first colour wheel 1, second colour wheel 2 wherein in Fig. 2 is equivalent to the first colour wheel 21 in the embodiment of the present invention and the first sync mark 11 in the second colour wheel 22, Fig. 2 and the second sync mark 21 respectively and is equivalent to the first sync mark in the embodiment of the present invention and the second sync mark.
First sync mark and the second sync mark are the sync bit mark preset, be separately positioned on the CD-ROM drive motor side surface of the first colour wheel 21 and the second colour wheel 22, mark can be black belt or black thin film or carbonization mark, utilize the principle of black light-absorbing, the situation that the light sent by sensor is absorbed and reflects knows the rotational case of the first sync mark and the second sync mark, reflects the rotational case of the first colour wheel and the second colour wheel.In position, the first sync mark and the second sync mark all with separately belonging to colour wheel aligns with reference to reference position, can situation as shown in Figure 3 or Figure 4, do not repeat them here.
In a particular embodiment, 3rd sensor 25 is photosensitive sensors, luminance signal can be converted to voltage signal, this voltage signal is the second induced signal, situation by the output light after the second colour wheel can be embodied in the form of a voltage intuitively, different colors has different brightness, thus the second induced signal exports the waveform signal of different voltage magnitude.If when there is colour mixture or color addition situation, the ANOMALOUS VARIATIONS time period will occur voltage magnitude, this is because the luminance signal superposition of the light of different colours converts different voltage signals to.
The method of work of above-mentioned light source output control system, describe in detail in light source output control method in above-described embodiment one and embodiment two, the light source output control system of the application embodiment of the present invention, its course of work also can bring the beneficial effect as described in embodiment one and embodiment two, all repeats no more herein.
Embodiment four
The embodiment of the present invention also proposes a kind of laser projection device, and this laser projection device includes LASER Light Source and above-mentioned light source output control system.
As shown in figure 14, be the schematic diagram of the laser projection device that the present embodiment proposes, this laser projection device comprises LASER Light Source 1, ray machine 2, camera lens 3 and projection screen 4.
Wherein, adopt the double-colored LASER Light Source 1 of taking turns synchronous control system described in embodiment three, three primary colours light can be exported in timing ground, three primary colours light enters ray machine 2 part by optical wand (not shown), except optical wand structure, ray machine 2 part also comprises light path converting device and dmd chip (all not shown in figure).Through the modulation of dmd chip, three primary colours light arrives camera lens 3 through refraction repeatedly, convergence again.
Projector equipment in the present embodiment four is ultrashort out-of-focus projection equipment, and be applicable to family or portable use, therefore camera lens 3 is ultrashort out-of-focus projection camera lens, and the feature of ultrashort out-of-focus projection camera lens than under can still project high-quality image in low projection.Light arrives camera lens 3 after DMD modulation, by one group of optical mirror slip in camera lens, comprises multi-disc convex lens, concavees lens, non-spherical lens etc., finally projects on projection screen 4 and form projected image.
Wherein, as shown in figure 15, LASER Light Source 1 specifically comprises laser instrument 11, first colour wheel 15 and the second colour wheel 16; In embodiments of the present invention, laser instrument is blue laser, sends blue laser, and as the exciting light source of fluorescence.Wherein, the first colour wheel is fluorescent powder wheel, and the second colour wheel is filter wheel.Filter wheel 16 generally includes the first primary colours colour filter subregion, the second primary colours colour filter subregion and three primary colours colour filter subregion, in concrete enforcement, for laser part, because purity is higher, filter wheel may correspond to and arranges transparent region and carry out transmission to laser, for fluorescence, because the purity relative laser of fluorescence is lower, need to carry out colour filter by the color filter of corresponding color, enter once to improve the purity of color; Fluorescent powder wheel 15 comprises phosphor region and transmission area, wherein transmission area is generally clear glass, for rotating to transmission laser during this position when fluorescent wheel, phosphor region comprises green and yellow fluorescent powder district (not shown), excites generation green fluorescence and yellow fluorescence for receiving blue laser irradiation.Wherein, green fluorescence district, blue light transmission area, yellow fluorescence district is corresponding with the green color subregion on filter wheel, clear area, red color filter subregion respectively.In embodiments of the present invention, fluorescent wheel 15 and filter wheel 16 design for non-coaxial, and from diagram, the plane that two colour wheels rotate place is separately mutually perpendicular, but the present embodiment only gives a kind of non-coaxial concrete mode, does not limit therewith.
In the present embodiment, fluorescent wheel 15 is reflective fluorescent wheel, blue laser is after the transmissive region of fluorescent wheel 15, also can through being arranged at the relay lens group at the fluorescent wheel back side, the first eyeglass 12, second eyeglass 13 as shown in Figure 11, the 3rd eyeglass 14, these optical mirror slips comprise the optical mirror slips such as plane mirror, convex lens or diffusion sheet, form blue laser loop and are back to fluorescent wheel front, be incident to and close light microscopic sheet 17, carry out conjunction light with the fluorescence of being excited.
After three primary colours actinic light, more successively by filter wheel 16, particularly, successively by the position subregion of corresponding color in filter wheel, form the three primary colours light output of timing, arrive and be positioned at LASER Light Source x ray machine part below, illumination is provided.
Except making the subregion of two colour wheel corresponding color consistent, on such as fluorescent wheel 15, the center of circle angle in green fluorescence district is 108 degree, on so corresponding filter wheel, the center of circle angle of green color subregion arranges and is also 108 degree, also needs two colour wheel synchronous rotaries simultaneously, keeps geo-stationary.
For realizing fluorescent powder wheel and filter wheel can synchronous rotary, the method and system that the embodiment of the present invention takes above-described embodiment one, two to propose realizes: as shown in Figure 2, filter wheel 16 in corresponding Figure 15 of fluorescent powder wheel the 15, second colour wheel 2 in the corresponding Figure 15 of first colour wheel 1; Fluorescent powder wheel and filter wheel arrange the first sync mark and the second sync mark respectively, and two positions be marked on two colour wheels are identical.
First sensor is placed in fluorescent powder wheel around, for detecting and obtaining the induced signal of the first sync mark, is infrared sensor or optical sensor; Second sensor is placed in around filter wheel, for detecting and obtaining the induced signal of the second sync mark, is infrared sensor or optical sensor; Wherein, the induced signal of the first sync mark and the induced signal of the second sync mark are designated as first group of induced signal; The control module of laser equipment compares rising edge or the negative edge of synchronization first group of induced signal; And according to the rising edge of first group of induced signal or the difference of negative edge, subsynchronous at the beginning of adjustment fluorescent powder wheel and the rotating speed of filter wheel make the rising edge of first group of induced signal or negative edge overlap; 3rd sensor is placed in the light emission side of filter wheel, for photosensitive sensors or luminance sensor, for detecting and obtaining the second induced signal, this second induced signal is the luminance detection signal that filter wheel exports light, be a voltage waveform signal, the magnitude of voltage that different colours is corresponding different; The control module of laser projection device obtains the abnormal time section of the magnitude of voltage saltus step of the second induced signal, and the rotating speed of adjustment fluorescent powder wheel and filter wheel, until it is 0 that magnitude of voltage saltus step abnormal time section is eliminated, completes the accurate synchro control of fluorescent powder wheel and filter wheel.
First sync mark and the preferred black belt of the second sync mark or black thin film or carbonization mark, attach or be sprayed at the side surface of the CD-ROM drive motor driving fluorescent powder wheel and filter wheel.
Above fluorescent powder wheel and filter wheel by twice synchronizing process realize precisely synchronously after, the three primary colours light non-mixed color time period exported by filter wheel can be made, thus improve monochromatic brightness and the purity of output, and then improve the color saturation of color, simultaneously, ensure that the timing of three primary colours, thus high-quality lighting source can be provided for ray machine 2 part, improve color representation power and the display quality of projected image.
It should be noted that, in embodiments of the present invention, LASER Light Source is the course of work that the fluorescence producing two kinds of colors for blue monochromatic laser excitation two kinds of fluorescent powder is illustrated light source, also can be two-color laser light source, wherein a kind of LASER Light Source excites one or both fluorescent powder jointly to form three primary colours light.The output control procedure of its light source is similar to the above embodiments, and those skilled in the art's easy understand and derivation, do not repeat them here.
To sum up, the laser projection device that the embodiment of the present invention proposes, non-coaxially be provided with the first colour wheel and fluorescent wheel and the second colour wheel and filter wheel, position corresponding on fluorescent wheel and filter wheel is provided as the first sync mark and second sync mark of sync bit respectively, first sensor and the second sensor is used to obtain the induced signal of a swing circle internal induction first sync mark and the induced signal of induction the second sync mark respectively, compare rising edge or the negative edge of the first sync mark and the second sync mark in two induced signals, obtain the rising edge of two induced signals or the position difference when synchronization of negative edge, adjustment drives the rotating speed of the CD-ROM drive motor of fluorescent wheel and filter wheel, realize the elimination position difference of two induced signals, also the first subsynchronous of non-coaxial first colour wheel and each self-corresponding first sync mark of the second colour wheel and the second sync mark is just achieved, because the reference reference position of the first sync mark and the second sync mark and the first affiliated colour wheel and the second colour wheel can exist some errors when assembling, cause after timely two marks are synchronized, because rigging error does not make the reference reference position complete matching of two colour wheels, thus there is tandem in time, the colour mixture time period will be there is from the light that filter wheel exports.Therefore by arranging the 3rd sensor in the output light path of filter wheel, get the second induced signal, second induced signal is voltage signal, the voltage that different colours light is corresponding different, there is saltus step in voltage magnitude corresponding to two kinds of color of light, and the electric voltage exception existed during two kinds of color of light signal saltus steps corresponds to the time period that colour mixture occurs between different colours, reference is changed to the colour mixture time period, rotating speed again by adjusting two colour wheels eliminates the electric voltage exception that voltage jump exists, achieve the accurate synchronous rotary of two colour wheels, finally eliminate the colour mixture period, ensure that the purity that three primary colours export and timing, monochromatic output brightness can be ensured simultaneously, be beneficial to the color saturation and display quality that improve laser projection image.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (14)
1. a light source output control method, described light source comprises laser instrument, first colour wheel and the second colour wheel, described laser instrument sends laser, irradiate described first colour wheel and produce fluorescence, described laser and fluorescence are respectively by color subregion outgoing corresponding on described second colour wheel, and described first colour wheel and the second colour wheel have identical color subregion, it is characterized in that
Described first colour wheel and the second colour wheel arrange the first sync mark, the second sync mark respectively, and wherein, described first sync mark and the second sync mark are alignd with the same position of described first colour wheel and the second colour wheel respectively;
Described output control method comprises:
According to described first sync mark of acquisition and first group of induced signal of the second sync mark, synchronously described first colour wheel and the second colour wheel;
From described second colour wheel output light path, obtain the second induced signal, and according to the second induced signal subsynchronous described first colour wheel and the second colour wheel again, wherein, described second induced signal is the voltage waveform signal of corresponding different colours;
Three primary colours are exported through the second colour wheel timing.
2. light source light source output control method according to claim 1, described according to described first sync mark of acquisition and first group of induced signal of the second sync mark, synchronously described first colour wheel and the second colour wheel specifically comprise:
In a swing circle, obtain the induced signal of corresponding described first sync mark and described second sync mark respectively, be designated as first group of inductive impulse signal;
Compare rising edge or the negative edge difference of synchronization first group of inductive impulse signal;
The rotating speed adjusting described first colour wheel and the second colour wheel makes the rising edge of described first group of inductive impulse signal or negative edge overlap with synchronously described first colour wheel and the second colour wheel.
3. light source output control method according to claim 1 and 2, is characterized in that, describedly from described second colour wheel output light path, obtains the second induced signal, and according to the second induced signal more subsynchronous described first colour wheel and the second colour wheel specifically comprise:
The second induced signal is obtained from described second colour wheel output light path,
Obtain the magnitude of voltage bound-time threshold value of described second induced signal,
Adjust the rotating speed of described first colour wheel and the second colour wheel until described magnitude of voltage bound-time threshold value is 0 with subsynchronous described first colour wheel and the second colour wheel again.
4. light source output control method according to claim 1, is characterized in that,
Described first sync mark and the second sync mark lay respectively at the CD-ROM drive motor rotating shaft side surface of described first colour wheel and the second colour wheel.
5. the light source output control method according to claim 1 or 4, is characterized in that,
The color partition boundaries that described first sync mark and the second sync mark reference position are identical with on described first colour wheel and the second colour wheel respectively aligns.
6. light source output control method according to claim 3, is characterized in that, adjusts the rotating speed of described first colour wheel and the second colour wheel until described magnitude of voltage bound-time threshold value is 0, specifically comprises:
Determine that the circumferential length between the first sync mark and the second sync mark is poor according to described magnitude of voltage bound-time threshold value;
With the first colour wheel or the second colour wheel for benchmark, adjust the rotating speed of the second colour wheel or the first colour wheel, be contracted to zero to make the circumferential length between described first sync mark and the second sync mark;
Adjust the second colour wheel or the first colour wheel at the uniform velocity rotates with identical speed with the first colour wheel or the second colour wheel.
7. a light source output control system, comprise laser instrument, first colour wheel and the second colour wheel, described laser instrument sends laser, irradiate described first colour wheel and produce fluorescence, described laser and fluorescence are respectively by color subregion outgoing corresponding on described second colour wheel, and described first colour wheel and the second colour wheel have identical color subregion, it is characterized in that, also comprise:
Be separately positioned on the first sync mark on the first colour wheel and the second sync mark on the second colour wheel, wherein, described first sync mark and the second sync mark are alignd with the same position of described first colour wheel and the second colour wheel respectively;
First sensor, and the second sensor, be respectively used to detect and obtain first group of induced signal of described first sync mark, the second sync mark;
Control module, for according to described first group of induced signal synchronously described first colour wheel and the second colour wheel;
3rd sensor, for obtaining the second induced signal from described second colour wheel output light path, wherein, described second induced signal is the voltage waveform signal of corresponding different colours;
And described control module is also for according to the second induced signal subsynchronous described first colour wheel and the second colour wheel again.
8. light source output control system according to claim 7, is characterized in that, described control module also comprises adjustment unit, described control module specifically for,
Compare rising edge or the negative edge difference of first group of inductive impulse signal described in synchronization;
The rotating speed of described adjustment unit described first colour wheel of adjustment and the second colour wheel makes the rising edge of described first group of inductive impulse signal or negative edge overlap with synchronously described first colour wheel and the second colour wheel.
9. light source output control system according to claim 8, is characterized in that, described control module also specifically for, obtain the magnitude of voltage bound-time threshold value of described second induced signal,
Described adjustment unit is also for adjusting the rotating speed of described first colour wheel and the second colour wheel until described magnitude of voltage bound-time threshold value is 0 with subsynchronous described first colour wheel and the second colour wheel again.
10. light source output control system according to claim 7, is characterized in that,
Described first sync mark and the second sync mark lay respectively at the CD-ROM drive motor rotating shaft side surface of described first colour wheel and the second colour wheel.
11. light source output control systems according to claim 7 or 10, is characterized in that,
The color partition boundaries that described first sync mark and the second sync mark reference position are identical with on described first colour wheel and the second colour wheel respectively aligns.
12. light source output control systems according to claim 7, is characterized in that, described first sensor and the second sensor are infrared sensor or photosensitive sensors.
13. light source output control systems according to claim 7, is characterized in that, described second sensor is photosensitive sensors or luminance sensor.
14. 1 kinds of laser projection device, comprise LASER Light Source, it is characterized in that, described LASER Light Source comprises the light source output control system as described in any one of claim 7-13 claim.
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| CN201510738951.3A CN105223762B (en) | 2015-11-04 | 2015-11-04 | Light source output control method, system and laser projection device |
| US15/202,797 US9832433B2 (en) | 2015-11-04 | 2016-07-06 | Laser light source, method for controlling dual color wheels of light source, and laser projection device |
| US15/803,126 US10006610B2 (en) | 2015-11-04 | 2017-11-03 | Laser light source, method for controlling dual color wheels of light source, and laser projection device |
| US15/942,069 US10234108B2 (en) | 2015-11-04 | 2018-03-30 | Laser light source, method for controlling dual color wheels of light source, and laser projection device |
| US15/941,889 US10260709B2 (en) | 2015-11-04 | 2018-03-30 | Laser light source, method for controlling dual color wheels of light source, and laser projection device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573036A (en) * | 2016-01-11 | 2016-05-11 | 四川长虹电器股份有限公司 | Digital light processing (DLP) display system and display control method of laser light source |
| CN107065412A (en) * | 2017-04-05 | 2017-08-18 | 苏州佳世达光电有限公司 | Projection arrangement and its control method |
| CN107632485A (en) * | 2016-07-19 | 2018-01-26 | 深圳市光峰光电技术有限公司 | Colour wheel module, light-emitting device and optical projection system |
| 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 |
| CN107831631A (en) * | 2016-09-16 | 2018-03-23 | 卡西欧计算机株式会社 | Light supply apparatus and projection arrangement |
| WO2018072636A1 (en) * | 2016-10-20 | 2018-04-26 | 深圳市光峰光电技术有限公司 | Projection system |
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| CN115248524A (en) * | 2021-04-26 | 2022-10-28 | 中强光电股份有限公司 | Illumination system and projection device |
| WO2024045802A1 (en) * | 2022-09-02 | 2024-03-07 | 青岛海信激光显示股份有限公司 | Projection device and drive method for light source thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967636A (en) * | 1998-08-19 | 1999-10-19 | In Focus Systems, Inc. | Color wheel synchronization apparatus and method |
| US6474818B1 (en) * | 2000-07-28 | 2002-11-05 | Infocus Corporation | Mirror and aperture based color phase detector for use in a multimedia projection system |
| US20050225731A1 (en) * | 2004-04-07 | 2005-10-13 | Nec Viewtechnology, Ltd. | Single-plate color projector and synchronization adjusting method therefor |
| US20070139617A1 (en) * | 2005-12-21 | 2007-06-21 | International Business Machines Corporation | Lumen optimized stereo projector using a plurality of polarizing filters |
| CN1988675A (en) * | 2005-12-21 | 2007-06-27 | 国际商业机器公司 | Method and device to synchronize stereographic hardware to sequential color rendering apparatus |
| CN102520569A (en) * | 2011-12-02 | 2012-06-27 | 深圳市光峰光电技术有限公司 | Light source device and projection device using same |
| CN102645825A (en) * | 2011-11-03 | 2012-08-22 | 深圳市光峰光电技术有限公司 | Projecting device, light source system and color wheel assembly |
| CN102854592A (en) * | 2011-07-27 | 2013-01-02 | 深圳市绎立锐光科技开发有限公司 | Color wheel synchronizing signal acquisition device and method, color wheel detection unit and method, and projection apparatus |
| CN203745789U (en) * | 2014-01-03 | 2014-07-30 | 深圳市亿思达显示科技有限公司 | Light source system |
-
2015
- 2015-11-04 CN CN201510738951.3A patent/CN105223762B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967636A (en) * | 1998-08-19 | 1999-10-19 | In Focus Systems, Inc. | Color wheel synchronization apparatus and method |
| US6474818B1 (en) * | 2000-07-28 | 2002-11-05 | Infocus Corporation | Mirror and aperture based color phase detector for use in a multimedia projection system |
| US20050225731A1 (en) * | 2004-04-07 | 2005-10-13 | Nec Viewtechnology, Ltd. | Single-plate color projector and synchronization adjusting method therefor |
| US20070139617A1 (en) * | 2005-12-21 | 2007-06-21 | International Business Machines Corporation | Lumen optimized stereo projector using a plurality of polarizing filters |
| CN1988675A (en) * | 2005-12-21 | 2007-06-27 | 国际商业机器公司 | Method and device to synchronize stereographic hardware to sequential color rendering apparatus |
| CN102854592A (en) * | 2011-07-27 | 2013-01-02 | 深圳市绎立锐光科技开发有限公司 | Color wheel synchronizing signal acquisition device and method, color wheel detection unit and method, and projection apparatus |
| CN102645825A (en) * | 2011-11-03 | 2012-08-22 | 深圳市光峰光电技术有限公司 | Projecting device, light source system and color wheel assembly |
| CN102520569A (en) * | 2011-12-02 | 2012-06-27 | 深圳市光峰光电技术有限公司 | Light source device and projection device using same |
| CN203745789U (en) * | 2014-01-03 | 2014-07-30 | 深圳市亿思达显示科技有限公司 | Light source system |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573036B (en) * | 2016-01-11 | 2018-03-23 | 四川长虹电器股份有限公司 | A kind of LASER Light Source DLP display systems and display control method |
| CN105573036A (en) * | 2016-01-11 | 2016-05-11 | 四川长虹电器股份有限公司 | Digital light processing (DLP) display system and display control method of laser light source |
| CN107632485A (en) * | 2016-07-19 | 2018-01-26 | 深圳市光峰光电技术有限公司 | Colour wheel module, light-emitting device and optical projection system |
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