CN105892213B - A kind of two-color laser light source drive control circuit - Google Patents
A kind of two-color laser light source drive control circuit Download PDFInfo
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- CN105892213B CN105892213B CN201610504763.9A CN201610504763A CN105892213B CN 105892213 B CN105892213 B CN 105892213B CN 201610504763 A CN201610504763 A CN 201610504763A CN 105892213 B CN105892213 B CN 105892213B
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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
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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
Abstract
This application discloses a kind of two-color laser light source drive control circuit, the first control signal of control first laser light source works and the second control signal of control second laser light source works are converted to the first primary lights enable control signal and the second primary lights are enabled into control signal by control signal generation module；Simultaneously, first gating module, which enables control signal, the second primary lights according to first primary lights and enables control signal and three primary colours light, enables first object optical power signals required when control signal gates that signal is as first laser light source works all the way from least one optical power signals received, so that producing the light of corresponding bright during the unlatching of first laser light source according to first object optical power signals；Second gating module exports the second target optical power signals received to second laser light source, so that producing the light of corresponding bright during the unlatching of second laser light source according to the second target optical power signals.
Description
Technical field
The application is related to Color Laser Projection Technology field, more particularly to a kind of two-color laser light source drive control circuit.
Background technology
In current laser projection device, fluorescent wheel is mainly excited to produce the scheme of three primary colours using mono-colour laser
To realize that LASER Light Source is illuminated, but the primary lights saturation degree that mono-colour laser excites fluorescence to produce does not reach design requirement, is
Acquisition wider array of colour gamut, image color performance more horn of plenty, is currently suggested using blueness and red laser and fluorescence
Wheel produces the scheme of three primary colours.
It is that fluorescent wheel is excited by single laser using the laser projection device of mono-colour laser when being projected,
Required picture is projected out so as to produce three primary colours realization, therefore LASER Light Source needs are always on.And use two-color laser device
Laser projection device when being projected, it is necessary to according to the color of the light of output, control two-color laser device co-ordination.
At present, optical projection system in laser projection device show mainboard can by generate primary lights enable control signal come
The light of the color of display required for indicating two-color laser light source output, but how primary lights enable control signal is converted into control
The control signal of two-color laser light source works processed, also without a kind of clear and definite solution.
The content of the invention
In order to solve the above problems, the embodiment of the present application provides a kind of two-color laser light source drive control circuit, to incite somebody to action
Primary lights enable the control signal that control signal is converted to control two-color laser light source works, and two-color laser light source is lighted in control.
The embodiment of the present application provides a kind of two-color laser light source drive control circuit, including：
Control signal generation module, for enabling control signal and the second primary lights according to the first primary lights received
Enable control signal and generate the first control signal and the second control signal with the first control signal opposite in phase, it is described
First control signal controls being turned on and off for first laser light source, and second control signal controls opening for second laser light source
Open or close；
First gating module, control letter is enabled for enabling control signal, the second primary lights according to first primary lights
Number and three primary colours light enable control signal gated from least one optical power signals all the way signal as first object light
Power signal, and export to the first laser light source, so that the first laser light source is produced and described first when opening
The corresponding first laser signal of target optical power signals；
Second gating module, for receiving the second target optical power signals, and the second target optical power signals are defeated
Go out to the second laser light source, so that the second laser light source is produced and the second target optical power signals when opening
Corresponding second laser signal.
Optionally, second gating module, the second control letter for receiving the control signal generation module output
Number, and according to second control signal, by the second target optical power signals gating output to the second laser light source.
Optionally, first primary lights enable control signal and made for green glow enable control signal, second primary lights
Energy control signal is that blue light enables control signal；
The control signal generation module enables control signal, low level blue light in the green glow for receiving high level and enabled
During control signal, the first control signal, low level second control signal of high level are exported；Or
The control signal generation module is receiving low level green glow enable control signal, the blue light enable of high level
During control signal, the first control signal, low level second control signal of high level are exported.
Optionally, the control signal generation module includes：OR circuit and phase inverter；
The OR circuit, receives the green glow and enables control signal and blue light enable control signal, and export
First control signal；
The input of the phase inverter is electrically connected with the output end of the OR circuit, receives first control signal,
And export second control signal.
Optionally, it is that feux rouges enables control signal that the three primary colours light, which enables control signal,；At least one described light work(
Rate signal includes green glow power signal, blue power signal, gold-tinted power signal；
It is that to enable control signal be high electricity for low level, green glow that feux rouges that first gating module is received, which enables control signal,
When flat, blue light enables control signal for low level, the gating output green glow power signal from least one described optical power signals；
Or
It is that to enable control signal be low electricity for low level, green glow that feux rouges that first gating module is received, which enables control signal,
When flat, blue light enables control signal for high level, the gating output blue power signal from least one described optical power signals；
Or
It is that to enable control signal be high electricity for high level, green glow that feux rouges that first gating module is received, which enables control signal,
When flat, blue light enables control signal for low level, the gating output gold-tinted power signal from least one described optical power signals.
Optionally, first gating module includes the first data selector；
First data selector receives blue power signal by second input in signal input part, passed through
The 3rd input in signal input part receives green glow power signal, received by the 7th input in signal input part
Gold-tinted power signal；
The blue light that first data selector is inputted according to address strobe end enables control signal, green glow and enables control letter
Number, feux rouges enable the blue power signal, the green glow power signal, the gold-tinted power signal of the control signal from input
Signal exports the first object luminous power letter as the first object optical power signals, and by output end all the way for middle selection
Number.
Optionally, the second target optical power signals are feux rouges power signal；
When the second control signal that second gating module is received is high level, feux rouges power signal will be strobed defeated
Go out.
Optionally, second gating module includes the second data selector；
Second data selector receives ground signalling by first input in signal input part, passes through signal
Second input in input receives feux rouges power signal；
The output of the minimum input of address bit and the phase inverter in the address input end of second data selector
End electrical connection, receives second control signal, and the feux rouges power signal is selected into defeated according to second control signal
Go out.
Optionally, the circuit also includes：
Circuit protection module, including first and gate circuit, second and gate circuit, the 3rd and gate circuit；
Described first receives blue light respectively with the input of gate circuit enables control signal, function control signal；Described
One electrically connects with the output end of gate circuit with first input in the address input end of first data selector；
Described second receives green glow respectively with the input of gate circuit enables control signal, function control signal；Described
Two electrically connect with the output end of gate circuit with second input in the address input end of first data selector；
Described 3rd receives feux rouges respectively with the input of gate circuit enables control signal, function control signal；Described
Three electrically connect with the output end of gate circuit with the 3rd input in the address input end of first data selector.
Optionally, the function control signal is high level signal.
The two-color laser light source drive control circuit provided according to the embodiment of the present application, can generate mould by control signal
First primary lights are enabled block into control signal and the second primary lights enable control signal and are converted to control first laser light source work
The first control signal and the second control signal of control second laser light source works made；Meanwhile, the first gating module according to
First primary lights enable control signal, the second primary lights enable control signal and three primary colours light enable control signal from
First object required when signal is as first laser light source works all the way is gated at least one optical power signals received
Optical power signals, so that producing the light of corresponding bright during the unlatching of first laser light source according to first object optical power signals；
Second gating module exports the second target optical power signals received to second laser light source, so that second laser light
The light of corresponding bright is produced when source is opened according to the second target optical power signals.It is basis because each primary colours enable control signal
The primary lights such as actual demand control feux rouges, green glow, blue light and gold-tinted are exported according to the sequential and brightness of system requirements
, generated according to sequential so as to realize to enable control signal and the second primary colours according to the first primary lights and enable signal and export the
One control signal and the second control signal, control signal and the second primary colours enable are enabled so as to realize according to the first primary lights
The sequential of signal is turned on and off first laser light source and second laser light source.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodiment
Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present application, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is a kind of two-color laser light source configuration diagram in the prior art；
A kind of two-color laser light source driving control system schematic diagram that Fig. 2 provides for the embodiment of the present application；
A kind of fluorescent wheel and filter wheel structural representation that Fig. 3 provides for the embodiment of the present application；
A kind of two-color laser light source drive control electrical block diagram that Fig. 4 provides for the embodiment of the present application；
A kind of signal sequence schematic diagram that Fig. 5 provides for the embodiment of the present application；
A kind of two-color laser light source drive control electrical block diagram that Fig. 6 provides for the embodiment of the present application.
Embodiment
The circuit that the embodiment of the present application is provided is applied to the projector equipment using two-color laser light source framework.Swashed using double-colored
In the projector equipment of radiant framework, two LASER Light Sources are generally comprised：Red laser light source and blue laser light source.Such as Fig. 1
It is shown, it is a kind of two-color laser light source configuration diagram in the prior art.In Fig. 1,101 be blue laser light source, and 102 be red
LASER Light Source, 103 be fluorescent wheel.105 be closing light mirror, can pass through blue laser, and by from the glimmering of the head-on reflection of fluorescent wheel 103
Light is reflected away again, and 106 be also closing light mirror, and above-mentioned closing light mirror 106 can be dichroscope, can reflect a kind of light of wavelength,
Transmit the light of another wavelength.After blue laser, fluorescence, and red laser closing light, filter wheel 104 is entered back into, passes through even light
The even light of element 107 enters ray machine lighting part.In Fig. 1 framework, the red laser that red laser light source 102 is sent not according to
Penetrate fluorescent wheel 103.
As shown in Fig. 2 a kind of two-color laser light source driving control system schematic diagram provided for the embodiment of the present application.This Shen
Please be in embodiment, two-color laser light source drive control shows mainboard 201, two-color laser light source drive control circuit by optical projection system
202nd, the part of two-color laser light source module 203 etc. three is completed jointly.Wherein, two-color laser light source module 203 includes red laser
Light source 2031, blue laser light source 2032 and colour wheel module 2033.
Optical projection system shows that mainboard 201 is used for generating primary lights enable control signal and optical power signals.Primary lights make
Energy control signal generally comprises feux rouges and enables control signal, green glow enable control signal, blue light enable control signal, for indicating
Two-color laser light source module 203 generates the light of respective color.Optical power signals are by pulse width modulation
The signal of (PulseWidthModulation, PWM) value composition, red laser light source 2031 or blue laser light source 2032 can
Luminous power during determining luminous according to optical power signals, so as to influence the height of output image brightness.
Colour wheel module in the embodiment of the present application is made up of fluorescent wheel and filter wheel, and fluorescent wheel and filter wheel revolve in the same direction
Turn.As shown in figure 3, a kind of fluorescent wheel and filter wheel structural representation that are provided for the embodiment of the present application.In Fig. 3, fluorescent wheel
It is divided into green emitting phosphor area, yellow fluorescent powder area and the part of clear area three, green emitting phosphor area is used for producing green light, and yellow is glimmering
Guang Fen areas are used for producing sodium yellow, and a wherein yellow fluorescent powder area part does not produce sodium yellow, clear area without LASER Light Source irradiation
Project blue laser.Filter wheel is divided into green glow color filter regions and clear area two parts, and green glow color filter regions are used for filtering green light
Color, other color of light are reflected back, it is impossible to through green glow color filter regions, and clear area is used for projecting blue light, gold-tinted and feux rouges.
In such scheme, the output of the primary lights such as green glow, blue light and gold-tinted of whole optical projection system is by blue laser light
Source is generated by fluorescent wheel and filter wheel conversion, and feux rouges is directly produced by red laser light source, is and green glow, indigo plant
Light and gold-tinted common sparing light path, without fluorescent wheel, are directly over filter wheel transparent region and project away, this feux rouges light path is set
Meter mode can realize acquisition saturation degree highest red monochromatic light.
Specifically, blue laser light source is irradiated to the green emitting phosphor area of fluorescent wheel, excites green fluorescence wheel to send green
Light, green light exports the green monochromatic light of high-purity after the green glow color filter regions colour filter of filter wheel, i.e., in a swing circle
Interior, two-color laser light source module exports green glow in the green partition period of fluorescent wheel and filter wheel in Fig. 3；Blue laser light source is shone
Projection past when being mapped to the clear area of fluorescent wheel, then by filter wheel clear area also can transmissive, i.e., in a revolution
In phase, two-color laser light source module exports blue light in the blue partition period of fluorescent wheel and filter wheel in Fig. 3；Blue laser light source
The yellow fluorescent powder area of fluorescent wheel is irradiated to, excites yellow fluorescent powder to send sodium yellow, sodium yellow passes through the clear area of filter wheel
Directly export sodium yellow afterwards, i.e., it is double-colored in the yellow subregion period of fluorescent wheel and filter wheel in Fig. 3 in a swing circle to swash
Radiant module exports sodium yellow.Red laser light source does not irradiate fluorescent wheel, and the clear area for being directly over filter wheel is projected away,
The two-color laser light source module output red monochromatic light in the red subregion period of filter wheel in Fig. 3 i.e. in a swing circle.
In summary, in Fig. 3, green partition, blue partition and the yellow subregion of fluorescent wheel are shone by blue laser light source
Penetrate, remainder irradiates without LASER Light Source.Green partition, blue partition and the yellow subregion of filter wheel are blue laser light source
Light the period, and red subregion lights the period for red laser light source.Two-color laser light source module output green glow, blue light and
What gold-tinted was all generated by blue laser light source, therefore blue laser light source is necessary within green glow, blue light and gold-tinted the output period
Light, and red laser light source does not work.The feux rouges of two-color laser light source module output is produced by red laser light source,
Therefore the period is exported in feux rouges, red laser light source is in and lighted the period, and this period blue laser light source does not work.
It should be noted that optical projection system shows that mainboard sends feux rouges and enables control signal, green glow enable control signal, indigo plant
Light enables control signal.It, for improving system output image brightness, is not primary colours truly that gold-tinted, which is, therefore yellow
The enable control signal of light can be enabled control signal, green glow enable control signal, blue light by feux rouges and enable control signal
Combine to realize.
With reference to above description, as described in Figure 4, a kind of two-color laser light source drive control electricity provided for the embodiment of the present application
Line structure schematic diagram.
The circuit includes：
Control signal generation module 401, for enabling control signal and the second base according to the first primary lights received
Coloured light enables control signal and generates the first control signal and the second control signal with the first control signal opposite in phase,
First control signal controls being turned on and off for first laser light source, and second control signal controls second laser light source
Be turned on and off.
First gating module 402, control is enabled for enabling control signal, the second primary lights according to first primary lights
Signal and three primary colours light enable control signal and signal conduct all the way are gated from least one optical power signals received
First object optical power signals, and export to the first laser light source, so that the first laser light source is produced when opening
First laser signal corresponding with the first object optical power signals.
Second gating module 403, for receiving the second target optical power signals, and by the second target optical power signals
Output is believed to the second laser light source so that the second laser light source is produced when opening with the second target luminous power
Number corresponding second laser signal.
Optionally, second gating module 403, is additionally operable to receive that the control signal generation module 401 exports the
Two control signals, and according to second control signal, by the second target optical power signals gating output to described second
LASER Light Source.
In the embodiment of the present application, first laser light source can be blue laser light source, and second laser light source can be red
LASER Light Source.First laser light source and second laser light source are opened when receiving the control signal of high level, received
Closed during to low level control signal.Because blue laser light source and red laser light source need not be opened simultaneously, therefore, this
Apply in embodiment, the phase that the first control signal control that control signal generation module 401 is generated is controlled with the second control signal
Position is on the contrary, when i.e. described first control signal is high level, second control signal is low level；First control signal
During for low level, second control signal is high level.
It is to show that mainboard generates and sends by optical projection system to drive to two-color laser light source that each primary lights, which enable control signal,
Dynamic control circuit.In the embodiment of the present application, first primary lights enable control signal be green glow enable control signal, it is described
It is that blue light enables control signal that second primary lights, which enable control signal, and the three primary colours light enables control signal and enabled for feux rouges
Control signal.Optical projection system shows that the color for the light that mainboard can be exported as needed determines that each primary lights enable control signal
Level.
In the embodiment of the present application, each primary colours enable control signal and the work of first laser light source and second laser light source
The corresponding relation for making state can be following relation：
First, feux rouges enable control signal be low level, green glow enable control signal be high level, blue light enable control signal
During for low level, correspondence exports green glow, and now first laser light source is in opening, second laser light source and is in closing shape
State.
2nd, feux rouges enable control signal be low level, green glow enable control signal be low level, blue light enable control signal
During for high level, correspondence exports blue light, and now first laser light source is in opening, second laser light source and is in closing shape
State.
3rd, feux rouges enable control signal be high level, green glow enable control signal be high level, blue light enable control signal
During for low level, correspondence exports gold-tinted, and now first laser light source is in opening, second laser light source and is in closing shape
State.
4th, feux rouges enable control signal be high level, green glow enable control signal be low level, blue light enable control signal
During for low level, correspondence output feux rouges, now first laser light source is closed, second laser light source is in and opens shape
State.
Controlled in order that obtaining first laser light source and second laser light source and being enabled according to the first primary lights described above
Signal, the second primary lights enable control signal, the output of three primary colours enable control signal and are operated, the even first control letter
When number being high level, control first laser light source is opened, when the first control signal is low level, and control first laser light source is closed
Close；If the second control signal is high level, control second laser light source is opened, when the second control signal is low level, control
Second laser light source is closed；So, with reference to above description, in the embodiment of the present application, the control signal generation module 401 is needed
Will when the green glow for receiving high level enables control signal, low level blue light and enables control signal, the of output high level
One control signal, low level second control signal；Receive low level green glow enable control signal, high level blue light
When enabling control signal, the first control signal, low level second control signal of high level are exported；It is low level receiving
When green glow enables control signal, low level blue light and enables control signal, low level first control signal, high level are exported
Second control signal.
Accordingly, it is low level, green glow enable control letter that the feux rouges that the first gating module 402 is received, which enables control signal,
Number it is high level, blue light when to enable control signal be low level, the first control signal of output is high level, green glow power signal
Output will be strobed, optical projection system output green glow, blue laser light source is lighted；The second control signal now exported is low electricity
Flat, red laser light source does not work；It is low level, green glow enable that the feux rouges that first gating module 402 is received, which enables control signal,
Control signal is that low level, blue light enable control signal when being high level, and the first control signal of output is high level, blue light work(
Rate signal will be strobed output, and optical projection system output blue light, blue laser light source is lighted, and the second control signal now exported is
Low level, red laser light source does not work；It is high level, green glow that the feux rouges that first gating module 402 is received, which enables control signal,
It is that high level, blue light enable control signal when being low level to enable control signal, and the first control signal of output is high level, yellow
Optical power signals will be strobed output, and optical projection system output gold-tinted, blue laser light source is lighted, the second control letter now exported
Number it is low level, red laser light source do not work.
Optionally, the output of the second target optical power signals can be controlled by the second control signal.For example, second
When the second control signal that gating module 403 is received is high level, feux rouges power signal will be strobed output, and optical projection system is defeated
Go out feux rouges, red laser light source is lighted, now the first control signal is low level, blue laser light source does not work；Second gating mould
It it is the period of optical projection system green glow, blue light and gold-tinted output, now when the second control signal that block 403 is received is low level
First control signal is high level, and ground signalling will be strobed output, and red laser light source does not work.
With reference to above description, in a kind of possible implementation, the control signal generation module 401 can include：
OR circuit and phase inverter.The OR circuit, receives the green glow and enables control signal and blue light enable control
Signal, and first control signal is exported, this first control signal is the output control letter for containing green glow, blue light and gold-tinted
Number, i.e., it is optical projection system output green glow, blue light and gold-tinted period when the first control signal is effective；The input of the phase inverter
Electrically connected with the output end of the OR circuit, receive first control signal, and export second control signal, this
Two control signals are the output control signal of feux rouges, are that green glow, blue light and gold-tinted are not exported within a color output cycle
Period be feux rouges output the period.First control signal is received by the control end of first laser light source, so as to control the
One LASER Light Source is turned on and off, and second control signal is received by the control end of second laser light source, so as to control the
Dual-laser light source is turned on and off.
Certainly, it is example above, control signal generation module 401 can also have other forms, will not be repeated here.
With reference to above description, as shown in figure 5, a kind of signal sequence schematic diagram provided for the embodiment of the present application.Fig. 5
In, in one swing circle of colour wheel, two-color laser light source module can be sequentially output green glow, blue light, gold-tinted and feux rouges, its
The order of green glow, blue light, gold-tinted and feux rouges that middle two-color laser light source module is exported is not limited only to this, can be arbitrary arrangement
Sequentially.
The brightness height of LASER Light Source output light in the case where inputting optical power signals of different sizes is also different, optical power signals
The brightness for the light that bigger LASER Light Source is sent is higher.In the embodiment of the present application, LASER Light Source can pass through the big of optical power signals
Minor adjustment system output feux rouges, green glow, blue light and the height of gold-tinted brightness.Two-color laser light source drive control circuit is accessed simultaneously
Feux rouges, green glow, the optical power control signal of blue light and gold-tinted, only need to one primary colours optical power control signal of selection defeated every time
Go out, within a color output cycle, a certain moment only correspond to a kind of primary colours light output, and optical projection system will according to a certain moment
The primary lights of output, show that mainboard sends each primary lights and enables control signal, two-color laser light source drive control by Systems Projection
Circuit enables the optical power signals of control signal selection correspondence moment output primary colours, the light work(of each primary colours output further according to each primary colours
The size of rate signal determines the brightness height of each primary colours light output such as feux rouges, green glow, blue light and gold-tinted, each primary lights luminous power
Signal can be the same or different, i.e., the output brightness of corresponding each primary lights can be the same or different.The application is real
Applying example can realize that the optical power control signal for gating needs is defeated by the first gating module 402 and the second gating module 403
Enter to first laser light source or second laser light source.
At least one described optical power signals that first gating module 402 is received can include green glow power signal, indigo plant
Optical power signals, gold-tinted power signal.
Corresponded to according to input and output above in relation, the embodiment of the present application, first gating module 402 can include
First data selector.Now first data selector is blue by second input channel reception in signal input part
Optical power signals, by the 3rd input channel reception green glow power signal in signal input part, pass through signal input part
In the 7th input channel reception gold-tinted power signal.Meanwhile, first data selector is defeated according to address strobe end
The blue light entered enables control signal, green glow and enables the blue power letter of control signal, feux rouges enable control signal from input
Number, select in the green glow power signal, the gold-tinted power signal all the way signal as the first object optical power signals,
And the first object optical power signals are exported by output end.
Optionally, first data selector can according to address input end address bit order from low to high, according to
Secondary reception blue light enables control signal, green glow and enables control signal, feux rouges enable control signal.It is, of course, also possible to there is other companies
Mode is connect, be will not be repeated here.
With reference to description above, with the first data selector can according to address input end address bit from low to high suitable
Sequence, successively exemplified by reception blue light enable control signal, green glow enable control signal, feux rouges enable control signal, when the first data
It is that to enable control signal be high level, indigo plant for low level, green glow that feux rouges that selector address input end is received, which enables control signal,
Light enables control signal when being low level, and the address signal of address input end input is 010, and the 3rd in signal input part is defeated
Enter end to be strobed, now the first data selector output green glow power signal, be system output green glow period, blue laser
Light source igniting, red laser light source does not work；When the feux rouges that the first data selector address input end is received enables control signal
For low level, green glow enable control signal be low level, blue light enable control signal be high level when, address input end input
Address signal is 001, and second in signal input part input is strobed, now the first data selector output blue light
Power signal, is the system output blue light period, and blue laser light source is lighted, and red laser light source does not work；When the selection of the first data
It is that to enable control signal be that high level, blue light make for high level, green glow that feux rouges that device address input end is received, which enables control signal,
Energy control signal is low level, and the address signal of address input end input is the 7th input quilt in 110, signal input part
Gating, now the first data selector output gold-tinted power signal, is system output gold-tinted period, blue laser light source point
Bright, red laser light source does not work.
Certainly, it is example above, the first gating module 402 can also have other forms, will not be repeated here.
Optionally, in the embodiment of the present application, the second target optical power signals that second gating module 403 is received can
Think feux rouges power signal.
According to input/output relation described above, second gating module 403 can include the second data selector；
Second data selector receives ground signalling, by signal input part by first input in signal input part
Second input receive feux rouges power signal；Minimum defeated of address bit in the address input end of second data selector
Enter end to electrically connect with the output end of the phase inverter, receive second control signal, and will according to second control signal
The feux rouges power signal selection output.Now, when second control signal is high level, the address of address input end input
Signal is 1, and second in signal input part input is strobed, and now second data selector exports the feux rouges work(
Rate signal, system output feux rouges period, red laser light source is lighted, and blue laser light source does not work.
In the embodiment of the present application, circuit protection module can also be included, circuit protection module includes first and gate circuit, the
Two with gate circuit, the 3rd and gate circuit.
Described first receives blue light respectively with the input of gate circuit enables control signal, function control signal；Described
One electrically connects with the output end of gate circuit with first input in the address input end of first data selector.
Described second receives green glow respectively with the input of gate circuit enables control signal, function control signal；Described
Two electrically connect with the output end of gate circuit with second input in the address input end of first data selector.
Described 3rd receives feux rouges respectively with the input of gate circuit enables control signal, function control signal；Described
Three electrically connect with the output end of gate circuit with the 3rd input in the address input end of first data selector.
In normal operation, function control signal is high level, it is allowed to feux rouges, green glow, blue light and gold-tinted it is normal
Output.When breaking down, function control signal can be pulled to low level, its each primary colours is enabled control signal and be all pulled to
It is low, so as to close all LASER Light Sources, protect whole optical projection system to avoid damaging.
With reference to description above, as shown in fig. 6, a kind of two-color laser light source drive control provided for the embodiment of the present application
Electrical block diagram.
Feux rouges enables control signal, green glow and enables control signal, blue light enable control signal respectively with R_EN, G_EN, B_
EN is represented.Green glow power signal, blue power signal, gold-tinted power signal, feux rouges power signal use G_PWM, B_ respectively
PWM, Y_PWM, R_PWM are represented.
In Fig. 6, control signal generation module 601 includes OR circuit U6 and phase inverter U7.First gating module 602
Include the first data selector U2, the second gating module 603 includes the second data selector U1, circuit protection module 604
Include first and gate circuit U5, second and gate circuit U4, the 3rd and gate circuit U3.R_EN and function control signal and the 3rd
It is connected with gate circuit U3 input, the 3rd is defeated with gate circuit U3 output end and the first data selector U2 the 3rd address
Enter to hold A2 to connect；G_EN and function control signal are connected with second with gate circuit U4 input, and second with gate circuit U4's
Output end is connected with the first data selector U2 second address input end A1；B_EN and function control signal and first with
Gate circuit U5 input connection, first inputs with gate circuit U5 output end with the first data selector U2 first address
Hold A0 connections.Certainly, simply example herein, can also have other connected modes, no longer illustrate one by one herein.
B_PWM, G_PWM, Y_PWM respectively with second input in the first data selector U2 signal input part,
3rd input, the 7th input connection.First data selector U2 selection output end D connects with blue laser light source
Connect, for blue laser light source Output optical power signal.
The input of B_EN, G_EN also with OR circuit U6 is connected, and OR circuit U6 output end is with phase inverter U7's
Input is connected.Phase inverter U7 output end output for the second control signal, for controlling red laser light source to open or closing
Close.OR circuit U6 output end is also connected with blue laser light source, for exporting the first control signal to blue laser light source,
So as to control sapphirine LASER Light Source to be turned on and off.Phase inverter U7 is output as the second control signal, is selected with the second data
Device U1 minimum address input end SEL is connected, and the second control signal can control the second data selector in high level
U1 selection outputs feux rouges power signal R_PWM can control the second data selector U1 to red laser light source, in low level
Selection 0 optical power signals of output are input to red laser light source, also can control lighting for red laser light source.Second data are selected
Device U1 output terminals A is connected with red laser light source, for red laser light source Output optical power signal.R_PWM and second
Second input B1 connection in data selector U1 signal input parts, 0 optical power signals (or ground signalling) and second
First input B0 connection in data selector U1 signal input parts.When the second data selector U1 minimum address is defeated
Enter to hold SEL for it is high when, the second data selector U1 output terminals A selection input B1 input, i.e., feux rouges R_PWM power signals are defeated
Enter to red laser light source, light red laser light source；The in ground signalling and the second data selector U1 signal input parts
One input B0 connection, when the second data selector U1 minimum address input end SEL is low, the second data selector
U1 output terminals A selection input B0 input, then 0 optical power signals be input to red laser light source, red laser light source not by
Light.
When R_EN, G_EN, B_EN high level effectively, it is high level when feux rouges enables control signal R_EN, and green glow is enabled
When control signal G_EN and blue light enable control signal B_EN all for low level, the first of the generation of control signal generation module 601
Control signal is that low level, the second control signal are high level, the second gating module 603 gating R_PWM.Now blue laser light
Source is closed, and red laser light source is opened, and the brightness for lighting second laser light source is produced according to R_PWM size.
It is low level when feux rouges enables control signal R_EN, it is high level that green glow, which enables control signal G_EN, and blue light is enabled
When control signal B_EN is low level, the first control signal that control signal generation module 601 is generated is high level, the second control
Signal is low level, the first gating module 603 gating G_PWM.Now red laser light source is closed, and blue laser light source is opened,
And the brightness for lighting first laser light source is produced according to G_PWM size.
It is low level when feux rouges enables control signal R_EN, it is also low level that green glow, which enables control signal G_EN, and blue light
When enabling control signal B_EN for high level, the first control signal that control signal generation module 601 is generated is high level, second
Control signal is low level, the first gating module 603 gating B_PWM.Now red laser light source is closed, and blue laser light source is opened
Open, and the brightness for lighting first laser light source is produced according to B_PWM size.
It is high level when feux rouges enables control signal R_EN, it is also high level that green glow, which enables control signal G_EN, and blue light
When enabling control signal B_EN for low level, the first control signal that control signal generation module 601 is generated is high level, second
Control signal is low level, the first gating module 603 gating Y_PWM.Now red laser light source is closed, and blue laser light source is opened
Open, and the brightness for lighting first laser light source is produced according to Y_PWM size.
Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the application scope.
Obviously, those skilled in the art can carry out the model of various changes and modification without departing from the application to the application
Enclose.So, if these modifications and variations of the application belong within the scope of the application claim, then the application is also intended to
Including these changes and modification.
Claims (10)
1. a kind of two-color laser light source drive control circuit, it is characterised in that including：
Control signal generation module, for enabling control signal and the second primary lights enable according to the first primary lights received
Control signal generates the first control signal and the second control signal with the first control signal opposite in phase, described first
Control signal control first laser light source is turned on and off, the unlatching of the second control signal control second laser light source or
Close；
First gating module, for according to first primary lights enable control signal, the second primary lights enable control signal with
And three primary colours light enable control signal gated from least one optical power signals received all the way signal as the first mesh
Mark optical power signals, and export to the first laser light source, so as to the first laser light source produced when opening with it is described
The corresponding first laser signal of first object optical power signals；
Second gating module, for receive the second target optical power signals, and by the second target optical power signals export to
The second laser light source, so as to the second laser light source, when opening, generation is corresponding with the second target optical power signals
Second laser signal.
2. circuit as claimed in claim 1, it is characterised in that second gating module, for receiving the control signal
Second control signal of generation module output, and according to second control signal, the second target optical power signals are selected
It is logical to export to the second laser light source.
3. circuit as claimed in claim 1 or 2, it is characterised in that first primary lights enable control signal to be made for green glow
It is that blue light enables control signal that energy control signal, second primary lights, which enable control signal,；
The control signal generation module enables control signal, low level blue light in the green glow for receiving high level and enables control
During signal, the first control signal, low level second control signal of high level are exported；Or
Low level green glow enables control signal to the control signal generation module, the blue light of high level enables control receiving
During signal, the first control signal, low level second control signal of high level are exported.
4. circuit as claimed in claim 3, it is characterised in that the control signal generation module includes：OR circuit and
Phase inverter；
The OR circuit, receives the green glow and enables control signal and blue light enable control signal, and export described
First control signal；
The input of the phase inverter is electrically connected with the output end of the OR circuit, receives first control signal, and defeated
Go out second control signal.
5. circuit as claimed in claim 4, it is characterised in that it is that feux rouges enables control that the three primary colours light, which enables control signal,
Signal processed；At least one described optical power signals include green glow power signal, blue power signal, gold-tinted power signal；
It is that to enable control signal be high level, indigo plant for low level, green glow that feux rouges that first gating module is received, which enables control signal,
When light enables control signal for low level, the gating output green glow power signal from least one described optical power signals；Or
It is that to enable control signal be low level, indigo plant for low level, green glow that feux rouges that first gating module is received, which enables control signal,
When light enables control signal for high level, the gating output blue power signal from least one described optical power signals；Or
It is that to enable control signal be high level, indigo plant for high level, green glow that feux rouges that first gating module is received, which enables control signal,
When light enables control signal for low level, the gating output gold-tinted power signal from least one described optical power signals.
6. circuit as claimed in claim 5, it is characterised in that first gating module includes the first data selector；
First data selector receives blue power signal by second input in signal input part, passes through signal
The 3rd input in input receives green glow power signal, receives gold-tinted by the 7th input in signal input part
Power signal；
The blue light that first data selector is inputted according to address strobe end enable control signal, green glow enable control signal,
Feux rouges enables control signal from the blue power signal, the green glow power signal, the gold-tinted power signal of input
Signal exports the first object luminous power letter as the first object optical power signals, and by output end all the way for selection
Number.
7. circuit as claimed in claim 6, it is characterised in that the second target optical power signals are feux rouges power signal；
When the second control signal that second gating module is received is high level, feux rouges power signal will be strobed output.
8. circuit as claimed in claim 7, it is characterised in that
Second gating module includes the second data selector；
Second data selector receives ground signalling by first input in signal input part, inputted by signal
Second input in end receives feux rouges power signal；
The output end electricity of the minimum input of address bit and the phase inverter in the address input end of second data selector
Connection, receives second control signal, and the feux rouges power signal is selected into output according to second control signal.
9. circuit as claimed in claim 6, it is characterised in that the circuit also includes：
Circuit protection module, including first and gate circuit, second and gate circuit, the 3rd and gate circuit；
Described first receives blue light respectively with the input of gate circuit enables control signal, function control signal；Described first with
The output end of gate circuit is electrically connected with first input in the address input end of first data selector；
Described second receives green glow respectively with the input of gate circuit enables control signal, function control signal；Described second with
The output end of gate circuit is electrically connected with second input in the address input end of first data selector；
Described 3rd receives feux rouges respectively with the input of gate circuit enables control signal, function control signal；Described 3rd with
The output end of gate circuit is electrically connected with the 3rd input in the address input end of first data selector.
10. circuit as claimed in claim 9, it is characterised in that the function control signal is high level signal.
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| CN106154720B (en) * | 2016-06-30 | 2017-11-17 | 海信集团有限公司 | A kind of projection light source wwhite balance control circuit |
| CN106658912B (en) * | 2016-12-21 | 2019-04-30 | 青岛海信电器股份有限公司 | Power driving circuit for laser dual-color light source in projection display apparatus |
| CN107797372A (en) * | 2017-11-17 | 2018-03-13 | 四川长虹电器股份有限公司 | A kind of two-color laser light source optical automotive engine system |
| CN108681196A (en) * | 2018-02-11 | 2018-10-19 | 中航国画（上海）激光显示科技有限公司 | A kind of light supply apparatus and projection device |
| CN110703553B (en) * | 2018-07-09 | 2022-05-10 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN109167241B (en) * | 2018-09-18 | 2019-12-06 | 深圳市杰普特光电股份有限公司 | control circuit of laser |
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