CN105892213A - Driving control circuit of two-color laser light source - Google Patents
Driving control circuit of two-color laser light source Download PDFInfo
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- CN105892213A CN105892213A CN201610504763.9A CN201610504763A CN105892213A CN 105892213 A CN105892213 A CN 105892213A CN 201610504763 A CN201610504763 A CN 201610504763A CN 105892213 A CN105892213 A CN 105892213A
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- control signal
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- laser 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
- G03B21/2006—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
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a driving control circuit of a two-color laser light source. The driving control circuit is used for converting a first primary light enable control signal and a second primary light enable control signal to a first control signal for controlling the working of a first laser light source and a second control signal for controlling the working of a second laser light source by a control signal generation module; meanwhile, a first selection module is used for selecting a path of signal from at least one light power signal which is received as a first target light power signal required by the first laser light source during working according to the first primary light enable control signal, the second primary light enable control signal and a third primary light enable control signal, so that the first laser light source generates light with corresponding brightness when started according to the first target light power signal; and a second selection module is used for outputting a second target light power signal which is received to the second laser light source, so that the second laser light source generates light with corresponding brightness when started according to the second target light power signal.
Description
Technical field
The application relates to Color Laser Projection Technology field, particularly relates to a kind of two-color laser light source and drives control electricity
Road.
Background technology
In current laser projection device, mono-colour laser is mainly used to excite fluorescent wheel to produce three primary colours
Scheme realize LASER Light Source illumination, but the primary lights saturation that mono-colour laser excites fluorescence to produce reaches
Less than design requirement, in order to obtain wider array of colour gamut, image color shows more horn of plenty, is currently suggested and adopts
The scheme of three primary colours is produced with blue and red laser and fluorescent wheel.
Use the laser projection device of mono-colour laser when projecting, be to excite glimmering by single laser instrument
Halo, thus produce three primary colours and realize being projected out required picture, therefore LASER Light Source needs always on.
And use the laser projection device of two-color laser device when projecting, need the color according to the light exported,
Control two-color laser device co-ordination.
At present, the display of the optical projection system in laser projection device mainboard can enable control by generating primary lights
Signal indicates the light of the color of the required display of two-color laser light source output, but how to be enabled by primary lights
Control signal is converted to control the control signal of two-color laser light source works, does not also have a kind of clear and definite solution party
Case.
Summary of the invention
In order to solve the problems referred to above, the embodiment of the present application provides a kind of two-color laser light source to drive control circuit,
The control signal of two-color laser light source works, control point is converted to control in order to primary lights to be enabled control signal
Bright two-color laser light source.
The embodiment of the present application provides a kind of two-color laser light source to drive control circuit, including:
Control signal generation module, for enabling control signal and second according to the first primary lights received
Primary lights enable control signal generate the first control signal and with described first control signal opposite in phase
Second control signal, described first control signal controls being turned on and off of the first LASER Light Source, and described second
Control signal controls being turned on and off of the second LASER Light Source；
First gating module, for enabling control signal according to described first primary lights, the second primary lights enable
Control signal and three primary colours light enable control signal and gate a road letter from least one optical power signals
Number as first object optical power signals, and export to described first LASER Light Source, in order to described first laser
Light source produces first laser signal corresponding with described first object optical power signals when opening；
Second gating module, for receiving the second target light power signal, and by described second target light power
Signal output is to described second LASER Light Source, in order to described second LASER Light Source produces when opening and described the
The second laser signal that two target light power signals are corresponding.
Optionally, described second gating module, for receiving the second of described control signal generation module output
Control signal, and according to described second control signal, by described second target light power signal gating output extremely
Described second LASER Light Source.
Optionally, described first primary lights enable control signal is that green glow enables control signal, described second base
It is that blue light enables control signal that coloured light enables control signal；
Described control signal generation module enables control signal, low level indigo plant at the green glow receiving high level
When light enables control signal, export the first control signal of high level, low level second control signal；Or
Person
Described control signal generation module is receiving low level green glow enable control signal, the indigo plant of high level
When light enables control signal, export the first control signal of high level, low level second control signal；Or
Person
Described control signal generation module enables control signal, low level indigo plant at the green glow receiving high level
When light enables control signal, export the first control signal of high level, low level second control signal；Or
Person
Described control signal generation module is receiving low level green glow enable control signal, low level indigo plant
When light enables control signal, the first control signal of output low level, the second control signal of high level.
Optionally, described control signal generation module includes: OR circuit and phase inverter；
Described OR circuit, receives described green glow and enables control signal and described blue light enable control signal,
And export described first control signal；
The input of described phase inverter electrically connects with the outfan of described OR circuit, receives described first and controls
Signal, and export described second control signal.
Optionally, described three primary colours light enables control signal is that HONGGUANG enables control signal；Described at least one
Individual optical power signals includes green glow power signal, blue power signal, gold-tinted power signal；
It is that low level, green glow enable control signal and be that HONGGUANG that first gating module receives enables control signal
When high level, blue light enable control signal is low level, gate defeated from least one optical power signals described
Go out green glow power signal；Or
It is that low level, green glow enable control signal and be that HONGGUANG that first gating module receives enables control signal
When low level, blue light enable control signal is high level, gate defeated from least one optical power signals described
Go out blue power signal；Or
It is that high level, green glow enable control signal and be that HONGGUANG that first gating module receives enables control signal
When high level, blue light enable control signal is low level, gate defeated from least one optical power signals described
Go out gold-tinted power signal.
Optionally, described first gating module includes the first data selector；
Described first data selector receives blue power by second input in signal input part to be believed
Number, received green glow power signal by the 3rd input in signal input part, by signal input part
The 7th input receive gold-tinted power signal；
Described first data selector enables control signal according to the blue light that address strobe end inputs, green glow enables
Control signal, HONGGUANG enable control signal from input described blue power signal, described green glow power signal,
Described gold-tinted power signal selects a road signal as described first object optical power signals, and by output
End exports described first object optical power signals.
Optionally, described second target light power signal is HONGGUANG power signal；
When the second control signal that described second gating module receives is high level, HONGGUANG power signal will be by
Gating output.
Optionally, described second gating module includes the second data selector；
Described second data selector is received ground signalling by first input in signal input part, is led to
Second input crossed in signal input part receives HONGGUANG power signal；
The input that in the address input end of described second data selector, address bit is minimum and described phase inverter
Outfan electrical connection, receive described second control signal, and according to described second control signal by described red
Optical power signals selects output.
Optionally, described circuit also includes:
Circuit protection module, including the first AND circuit, the second AND circuit, the 3rd AND circuit；
The input of described first AND circuit receives blue light respectively and enables control signal, function control signal；
The outfan of described first AND circuit and first in the address input end of described first data selector
Input electrically connects；
The input of described second AND circuit receives green glow respectively and enables control signal, function control signal；
The outfan of described second AND circuit and second in the address input end of described first data selector
Input electrically connects；
The input of described 3rd AND circuit receives HONGGUANG respectively and enables control signal, function control signal；
The outfan of described 3rd AND circuit and first in the address input end of described first data selector
Input electrically connects.
Optionally, described function control signal is high level signal.
Drive control circuit according to the two-color laser light source that the embodiment of the present application provides, control signal can be passed through
First primary lights are enabled control signal by generation module and the second primary lights enable control signal and are converted to control
Make the first control signal of the first LASER Light Source work and control the second control of the second LASER Light Source work
Signal；Meanwhile, the first gating module enables control signal according to described first primary lights, the second primary lights make
Energy control signal and three primary colours light enable control signal from least one optical power signals received
Gate first object optical power signals required when a road signal works as the first LASER Light Source, so that
Produce the light of corresponding bright according to first object optical power signals when first LASER Light Source is opened；Second gating mould
The the second target light power signal received is exported to the second LASER Light Source by block, so that the second laser light
Produce the light of corresponding bright according to the second target light power signal when source is opened.Control owing to each primary colours enable
Signal is to control the primary lights such as HONGGUANG, green glow, blue light and gold-tinted according to the actual requirements according to system requirements
Sequential and brightness carry out exporting, thus realize enabling control signal and the second base according to the first primary lights
Color enables signal and generates and export the first control signal and the second control signal according to sequential, thus realizes pressing
Enable control signal and the second primary colours according to the first primary lights to enable the sequential of signal and be turned on and off first and swash
Radiant and the second LASER Light Source.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present application, institute in embodiment being described below
The accompanying drawing used is needed to briefly introduce, it should be apparent that, the accompanying drawing in describing below is only the application's
Some embodiments, from the point of view of those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is a kind of two-color laser light source configuration diagram in 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 that Fig. 3 provides for the embodiment of the present application and filter wheel structural representation；
A kind of two-color laser light source that Fig. 4 provides for the embodiment of the present application drives control circuit structural representation；
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 that Fig. 6 provides for the embodiment of the present application drives control circuit structural representation.
Detailed description of the invention
The circuit that the embodiment of the present application provides is applicable for use with the projector equipment of two-color laser light source framework.Use
In the projector equipment of two-color laser light source framework, generally comprise two LASER Light Sources: red laser light source and indigo plant
Color LASER Light Source.As it is shown in figure 1, be a kind of two-color laser light source configuration diagram in prior art.Fig. 1
In, 101 is blue laser light source, and 102 is red laser light source, and 103 is fluorescent wheel.105 for closing light microscopic,
Can pass through blue laser, and will reflect away from the fluorescence of fluorescent wheel 103 head-on reflection again, 106 are also
Close light microscopic, above-mentioned conjunction light microscopic 106 can be dichroic mirror, it is possible to reflect the light of a kind of wavelength, transmission another
Plant the light of wavelength.After blue laser, fluorescence, and red laser close light, enter back into filter wheel 104, logical
The even light crossing even optical element 107 enters ray machine illumination part.In the framework of Fig. 1, red laser light source 102
The red laser sent does not irradiates fluorescent wheel 103.
As in figure 2 it is shown, a kind of two-color laser light source driving control system signal provided for the embodiment of the present application
Figure.In the embodiment of the present application, two-color laser light source drives and controls by optical projection system display mainboard 201, double-colored
LASER Light Source drives three parts such as control circuit 202, two-color laser light source module 203 jointly to complete.Wherein,
Two-color laser light source module 203 includes red laser light source 2031, blue laser light source 2032 and colour wheel mould
Group 2033.
Optical projection system display mainboard 201 is used for generating primary lights and enables control signal and optical power signals.Base
Coloured light enables control signal and generally comprises HONGGUANG enable control signal, green glow enable control signal, blue light enable
Control signal, for indicating two-color laser light source module 203 to generate the light of respective color.Optical power signals is
By the signal of pulse width modulation (Pulse Width Modulation, PWM) value composition, red laser light source
2031 or blue laser light source 2032 can determine luminous power during luminescence according to optical power signals, from
And affect the height of output brightness of image.
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 are together
To rotation.As it is shown on figure 3, a kind of fluorescent wheel provided for the embodiment of the present application and filter wheel structural representation
Figure.In Fig. 3, fluorescent wheel is divided into green emitting phosphor district, yellow fluorescent powder district and bright zone three part, green
Fluorescent material district is used for producing green light, and yellow fluorescent powder district is used for producing sodium yellow, wherein yellow fluorescent powder district
A part is irradiated without LASER Light Source and is not produced sodium yellow, bright zone projection blue laser.Filter wheel is divided into green glow
Color filter regions and bright zone two parts, green glow color filter regions is used for green light is carried out colour filter, and other color of light is by instead
Being emitted back towards, it is impossible to through green glow color filter regions, bright zone is used for projecting blue light, gold-tinted and HONGGUANG.
In such scheme, the output of the primary lights such as the green glow of whole optical projection system, blue light and gold-tinted, is by indigo plant
Color LASER Light Source changes generation through fluorescent wheel and filter wheel, and HONGGUANG is directly to be produced by red laser light source
Raw, simply with green glow, blue light and gold-tinted common sparing light path, without fluorescent wheel, it is directly over colour filter
Wheel transparent region projects away, and this HONGGUANG light path design mode can realize obtaining the red monochromatic that saturation is the highest
Light.
Specifically, blue laser light source is irradiated to the green emitting phosphor district of fluorescent wheel, excites green fluorescence wheel to send out
Going out green light, green light exports highly purified green monochromatic light after the green glow color filter regions colour filter of filter wheel,
I.e. in a swing circle, two-color laser light source in the green partition period of fluorescent wheel and filter wheel in Fig. 3
Module output green glow；Blue laser light source is irradiated to the projection past during bright zone of fluorescent wheel, then through colour filter
Wheel bright zone also can transmissive, i.e. in a swing circle, fluorescent wheel and the indigo plant of filter wheel in Fig. 3
Two-color laser light source module output blue light in the color subregion period；Blue laser light source is irradiated to the yellow of fluorescent wheel
Fluorescent material district, excites yellow fluorescent powder to send sodium yellow, and sodium yellow is the most defeated behind the bright zone of filter wheel
Go out sodium yellow, i.e. double-colored in the yellow subregion period of fluorescent wheel and filter wheel in Fig. 3 in a swing circle
LASER Light Source module output sodium yellow.Red laser light source does not irradiate fluorescent wheel, is directly over the saturating of filter wheel
Area pellucida projects away, i.e. two-color laser in the red subregion period of filter wheel in Fig. 3 in a swing circle
Light source module output red monochromatic light.
In sum, in Fig. 3, the green partition of fluorescent wheel, blue partition and yellow subregion are swashed by blueness
Radiant irradiates, and remainder irradiates without LASER Light Source.The green partition of filter wheel, blue partition and Huang
Color subregion is that blue laser light source is lighted the period, and red subregion is that red laser light source lights the period.Double-colored
Green glow, blue light and the gold-tinted of LASER Light Source module output is all generated by blue laser light source, therefore green
In light, blue light and gold-tinted export the period, blue laser light source must be lighted, and red laser light source is not
Bright.The HONGGUANG of two-color laser light source module output is produced by red laser light source, therefore exports in HONGGUANG
Period, red laser light source is in be lighted the period, and this period blue laser light source does not works.
It should be noted that optical projection system display mainboard sends, HONGGUANG enables control signal, green glow enables control
Signal processed, blue light enable control signal.Gold-tinted is used to raising system output brightness of image, is not true
Primary colours in positive meaning, therefore the enable control signal of gold-tinted can enable control signal, green glow by HONGGUANG
Enable control signal, the combination of blue light enable control signal realizes.
In conjunction with above description, as described in Figure 4, a kind of two-color laser light source provided for the embodiment of the present application drives
Dynamic control circuit structural representation.
This circuit includes:
Control signal generation module 401, for according to receive first primary lights enable control signal and
Second primary lights enable control signal generate the first control signal and with described first control signal phase place phase
The second anti-control signal, described first control signal controls being turned on and off of the first LASER Light Source, described
Second control signal controls being turned on and off of the second LASER Light Source.
First gating module 402, for enabling control signal, the second primary lights according to described first primary lights
Enable control signal and three primary colours light enables control signal from least one optical power signals received
Middle gating one road signal is as first object optical power signals, and exports to described first LASER Light Source, in order to
Described first LASER Light Source produces first laser corresponding with described first object optical power signals when opening
Signal.
Second gating module 403, for receiving the second target light power signal, and by described second target light
Power signal output is to described second LASER Light Source, in order to described second LASER Light Source produces and institute when opening
State the second laser signal that the second target light power signal is corresponding.
Optionally, described second gating module 403, it is additionally operable to receive described control signal generation module 401
Second control signal of output, and according to described second control signal, by described second target light power signal
Gating output is to described second LASER Light Source.
In the embodiment of the present application, the first LASER Light Source can be blue laser light source, and the second LASER Light Source is permissible
For red laser light source.First LASER Light Source and the second LASER Light Source are all believed in the control receiving high level
Number time open, when receiving the control signal of high level close.Due to blue laser light source and red laser
Light source need not open simultaneously, and therefore, in the embodiment of the present application, control signal generation module 401 generates
First control signal controls the opposite in phase controlled with the second control signal, and the most described first control signal is high
During level, described second control signal is low level；When described first control signal is low level, described
Two control signals are high level.
It is to be generated and sent to two-color laser by optical projection system display mainboard that each primary lights enable control signal
Light source drives control circuit.In the embodiment of the present application, it is green glow that described first primary lights enable control signal
Enable control signal, described second primary lights enable control signal is blue light enable control signal, the described 3rd
It is that HONGGUANG enables control signal that primary lights enable control signal.Optical projection system display mainboard can be the most defeated
The color of the light gone out determines that each primary lights enable the level of control signal.
In the embodiment of the present application, each primary colours enable control signal and the first LASER Light Source and the second laser light
The corresponding relation of the duty in source can be following relation:
One, HONGGUANG enable control signal be low level, green glow enable control signal be high level, blue light enable
When control signal is low level, corresponding output green glow, now the first LASER Light Source be in opening, second
LASER Light Source is closed.
Two, HONGGUANG enable control signal be low level, green glow enable control signal be low level, blue light enable
When control signal is high level, corresponding output blue light, now the first LASER Light Source be in opening, second
LASER Light Source is closed.
Three, HONGGUANG enable control signal be high level, green glow enable control signal be high level, blue light enable
When control signal is low level, corresponding output gold-tinted, now the first LASER Light Source be in opening, second
LASER Light Source is closed.
Four, HONGGUANG enable control signal be high level, green glow enable control signal be low level, blue light enable
When control signal is low level, corresponding output HONGGUANG, now the first LASER Light Source be closed, second
LASER Light Source is in opening.
So that the first LASER Light Source and the second LASER Light Source make according to the first primary lights described above
Energy control signal, the second primary lights enable control signal, the output of three primary colours enable control signal carries out work
Making, when the even first control signal is high level, controls the first LASER Light Source and open, the first control signal is
During low level, control the first LASER Light Source and close；If the second control signal is high level, controls second and swash
Radiant is opened, and when the second control signal is low level, controls the second LASER Light Source and closes；So, in conjunction with
Above description, in the embodiment of the present application, described control signal generation module 401 needs receiving high electricity
When flat green glow enables control signal, low level blue light enables control signal, the first control of output high level
Signal processed, low level second control signal；Control signal, high electricity is enabled receiving low level green glow
When flat blue light enables control signal, the first control signal of output high level, low level second control letter
Number；When the green glow receiving high level enables the blue light enable control signal of control signal, high level, defeated
Go out the first control signal of high level, low level second control signal；Make receiving low level green glow
When energy control signal, low level blue light enable control signal, the first control signal of output low level, height
Second control signal of level.
Accordingly, it is that low level, green glow make that the first gating module 402 receives HONGGUANG enables control signal
Can control signal be that high level, blue light enable control signal when being low level, the first control signal of output be
High level, green glow power signal will be strobed output, and optical projection system output green glow, blue laser light source is lighted；
The second control signal now exported is low level, and red laser light source does not works；First gating module 402 connects
It is that to enable control signal be that low level, blue light enable control for low level, green glow that the HONGGUANG that receives enables control signal
When signal processed is high level, the first control signal of output is high level, and blue power signal will be strobed defeated
Going out, optical projection system output blue light, blue laser light source is lighted, and the second control signal now exported is low electricity
Flat, red laser light source does not works；The HONGGUANG that first gating module 402 receives enables control signal for high electricity
It is that high level, blue light enable control signal when being low level that flat, green glow enables control signal, the first of output
Control signal is high level, and gold-tinted power signal will be strobed output, and optical projection system output gold-tinted, blueness swashs
Radiant is lighted, and the second control signal now exported is low level, and red laser light source does not works.
Optionally, the output of the second target light power signal can be controlled by the second control signal.Citing comes
Saying, when the second control signal that the second gating module 403 receives is high level, HONGGUANG power signal will be by
Gating output, optical projection system exports HONGGUANG, and red laser light source is lighted, and now the first control signal is low electricity
Flat, blue laser light source does not works；When the second control signal that second gating module 403 receives is low level,
The period exported for optical projection system green glow, blue light and gold-tinted, now the first control signal is high level, ground connection
Signal will be strobed output, and red laser light source does not works.
In conjunction with above description, in a kind of possible implementation, described control signal generation module 401 can
To include: OR circuit and phase inverter.Described OR circuit, receive described green glow enable control signal with
And described blue light enables control signal, and exporting described first control signal, this first control signal i.e. comprises
The output control signal of green glow, blue light and gold-tinted, when the i.e. first control signal is effective, is that optical projection system is defeated
Go out green glow, blue light and gold-tinted period；The input of described phase inverter is electrically connected with the outfan of described OR circuit
Connecing, receive described first control signal, and export described second control signal, this second control signal is
The output control signal of HONGGUANG, be within a color output cycle green glow, blue light and gold-tinted do not export time
Section is the HONGGUANG output period.Described first control signal is received by the control end of the first LASER Light Source, thus
Controlling being turned on and off of the first LASER Light Source, described second control signal is by the control end of the second LASER Light Source
Receive, thus control being turned on and off of the second LASER Light Source.
Certainly, being more than example, control signal generation module 401 can be to have other forms, at this not
Repeat again.
In conjunction with above description, as it is shown in figure 5, a kind of signal sequence signal provided for the embodiment of the present application
Figure.In Fig. 5, in one swing circle of colour wheel, two-color laser light source module can be sequentially output green glow,
Blue light, gold-tinted and HONGGUANG, the wherein green glow of two-color laser light source module output, blue light, gold-tinted and red
The order of light is not limited only to this, can be arbitrary arrangement order.
The brightness height that LASER Light Source exports light under the optical power signals that input varies in size is also different, light merit
The brightness of the light that the biggest LASER Light Source of rate signal sends is the highest.In the embodiment of the present application, LASER Light Source can lead to
Cross size adjustment system output HONGGUANG, green glow, blue light and the height of gold-tinted brightness of optical power signals.Double-colored
LASER Light Source drives control circuit to be concurrently accessed the optical power control signal of HONGGUANG, green glow, blue light and gold-tinted,
Have only to select a primary lights power control signal output every time, within a color output cycle, a certain
Moment only correspond to the output of a kind of primary lights, and optical projection system is according to primary lights to be exported of a certain moment, by being
System Projection Display mainboard sends each primary lights and enables control signal, and two-color laser light source drives control circuit root again
Enable control signal according to each primary colours and select the optical power signals of corresponding moment output primary colours, the light of each primary colours output
The size of power signal determines the brightness height of each primary lights outputs such as HONGGUANG, green glow, blue light and gold-tinted,
Each primary lights optical power signals can be the same or different, and the output brightness of i.e. corresponding each primary lights is permissible
Identical can also be different.The embodiment of the present application can pass through the first gating module 402 and the second gating module
The optical power control signal that 403 realize gating needs inputs to the first LASER Light Source or the second LASER Light Source.
At least one optical power signals described that first gating module 402 receives can include that green glow power is believed
Number, blue power signal, gold-tinted power signal.
According to input and output correspondence relation above, in the embodiment of the present application, described first gating module 402
The first data selector can be included.The most described first data selector is by second in signal input part
Individual input channel reception blue power signal, by the 3rd input channel reception in signal input part
Green glow power signal, by the 7th input channel reception gold-tinted power signal in signal input part.With
Time, described first data selector enables control signal according to the blue light that address strobe end inputs, green glow enables
Control signal, HONGGUANG enable control signal from input described blue power signal, described green glow power signal,
Described gold-tinted power signal selects a road signal as described first object optical power signals, and by output
End exports described first object optical power signals.
Optionally, described first data selector can be according to the address bit of address input end from low to high suitable
Sequence, receives blue light successively and enables control signal, green glow enable control signal, HONGGUANG enable control signal.When
So, it is also possible to have other connected modes, do not repeat them here.
In conjunction with description above, with the first data selector can according to the address bit of address input end from low to
High order, receives blue light successively and enables control signal, green glow enable control signal, HONGGUANG enable control letter
As a example by number, the HONGGUANG received when the first data selector address input end enable control signal be low level,
It is that high level, blue light enable control signal when being low level that green glow enables control signal, and address input end inputs
Address signal be 010, the 3rd input in signal input part is strobed, the most described first data
Selector output green glow power signal, is that system exports the green glow period, and blue laser light source is lighted, red sharp
Radiant does not works；The HONGGUANG enable control signal received when the first data selector address input end is low electricity
It is that low level, blue light enable control signal when being high level that flat, green glow enables control signal, address input end
The address signal of input is 001, and second input in signal input part is strobed, the most described first
Data selector output blue power signal, is that system exports the blue light period, and blue laser light source is lighted, red
Color LASER Light Source does not works；The HONGGUANG enable control signal received when the first data selector address input end is
High level, green glow enable control signal be high level, blue light enable control signal be low level, address input
The address signal of end input is 110, and the 7th input in signal input part is strobed, the most described the
One data selector output gold-tinted power signal, is that system exports the gold-tinted period, and blue laser light source is lighted,
Red laser light source does not works.
Certainly, being more than example, the first gating module 402 can be the most superfluous at this there to be other forms
State.
Optionally, in the embodiment of the present application, the second target light merit that described second gating module 403 receives
Rate signal can be HONGGUANG power signal.
According to input/output relation described above, described second gating module 403 can include the second data
Selector；Described second data selector receives ground connection by first input in signal input part to be believed
Number, receive HONGGUANG power signal by second input in signal input part；Described second data select
The input that in the address input end of device, address bit is minimum electrically connects with the outfan of described phase inverter, receives institute
State the second control signal, and according to described second control signal, described HONGGUANG power signal is selected output.This
Time, when described second control signal is high level, the address signal of address input end input is 1, and signal is defeated
Second input entered in end is strobed, and the most described second data selector exports described HONGGUANG power letter
Number, system exports the HONGGUANG period, and red laser light source is lighted, and blue laser light source does not works.
In the embodiment of the present application, it is also possible to include that circuit protection module, circuit protection module include first and door
Circuit, the second AND circuit, the 3rd AND circuit.
The input of described first AND circuit receives blue light respectively and enables control signal, function control signal；
The outfan of described first AND circuit and first in the address input end of described first data selector
Input electrically connects.
The input of described second AND circuit receives green glow respectively and enables control signal, function control signal；
The outfan of described second AND circuit and second in the address input end of described first data selector
Input electrically connects.
The input of described 3rd AND circuit receives HONGGUANG respectively and enables control signal, function control signal；
The outfan of described 3rd AND circuit and the 3rd in the address input end of described first data selector
Input electrically connects.
In normal operation, function control signal is high level, it is allowed to HONGGUANG, green glow, blue light and Huang
The normal output of light.When breaking down, function control signal can be pulled to low level so that it is each primary colours make
Can control signal all be pulled to low, thus close all LASER Light Sources, protect whole optical projection system to avoid damaging.
In conjunction with description above, as shown in Figure 6, a kind of two-color laser light source provided for the embodiment of the present application
Drive control circuit structural representation.
HONGGUANG enables control signal, green glow enables control signal, blue light enable control signal uses R_EN respectively,
G_EN, B_EN represent.Green glow power signal, blue power signal, gold-tinted power signal, HONGGUANG merit
Rate signal represents with G_PWM, B_PWM, Y_PWM, R_PWM respectively.
In Fig. 6, control signal generation module 601 includes OR circuit U6 and phase inverter U7.First
Gating module 602 includes that the first data selector U2, the second gating module 603 include the second data
Selector U1, circuit protection module 604 include the first AND circuit U5, the second AND circuit U4,
3rd AND circuit U3.The input of R_EN and function control signal and the 3rd AND circuit U3 connects,
The outfan of the 3rd AND circuit U3 and the 3rd the address input end A2 of the first data selector U2 are even
Connect；The input of G_EN and function control signal and the second AND circuit U4 connects, and second is electric with door
The outfan of road U4 and second address input end A1 of the first data selector U2 connect；B_EN with
And the input of function control signal and the first AND circuit U5 connects, the output of the first AND circuit U5
End is connected with first address input end A0 of the first data selector U2.Certainly, the most simply example,
Can also there is other connected mode, illustrate the most one by one at this.
B_PWM, G_PWM, Y_PWM respectively with in the signal input part of the first data selector U2
Second input, the 3rd input, the 7th input connect.First data selector U2's
Outfan D is selected to be connected with blue laser light source, for blue laser light source Output optical power signal.
B_EN, G_EN also input with OR circuit U6 is connected, and the outfan of OR circuit U6 is
It is connected with the input of phase inverter U7.The outfan output of phase inverter U7 for the second control signal, use
It is turned on and off in controlling red laser light source.The outfan of OR circuit U6 is also with blue laser light source even
Connect, for exporting the first control signal to blue laser light source, thus control sapphirine LASER Light Source open or
Close.Phase inverter U7 is output as the second control signal, with the minimum ground of the second data selector U1
Location input SEL is connected, and the second control signal can control the second data selector U1 when high level
Select output HONGGUANG power signal R_PWM to red laser light source, the second number can be controlled when low level
Select output 0 optical power signals to be input to red laser light source according to selector U1, also can control red laser
Lighting of light source.The output terminals A of the second data selector U1 is connected with red laser light source, for red
Color LASER Light Source Output optical power signal.In R_PWM and the second data selector U1 signal input part
Second input B1 connects, 0 optical power signals (or claiming ground signalling) and the second data selector U1
First input B0 in signal input part connects.Minimum address as the second data selector U1
When input SEL is high, the output terminals A of the second data selector U1 selects input B1 input, i.e.
HONGGUANG R_PWM power signal is input to red laser light source, lights red laser light source；Ground signalling with
First input B0 in second data selector U1 signal input part connects, when the second data select
When the minimum address input end SEL of device U1 is low, the output terminals A of the second data selector U1 selects
Input B0 inputs, then 0 optical power signals is input to red laser light source, and red laser light source is not by point
Bright.
During R_EN, G_EN, B_EN high level effectively, be high electric when HONGGUANG enables control signal R_EN
Flat, and when green glow enable control signal G_EN and blue light enable control signal B_EN are all low level, control
The first control signal that signal generation module 601 processed generates be low level, the second control signal be high level,
Second gating module 603 gates R_PWM.Now blue laser light source is closed, and red laser light source is opened,
And the brightness of the second LASER Light Source is lighted according to the size generation of R_PWM.
Being low level when HONGGUANG enables control signal R_EN, it is high level that green glow enables control signal G_EN,
When blue light enable control signal B_EN is low level, the first control that control signal generation module 601 generates
Signal be high level, the second control signal be low level, the first gating module 602 gates G_PWM.This
Time red laser light source close, blue laser light source is opened, and produces according to the size of G_PWM and light the
The brightness of one LASER Light Source.
Being low level when HONGGUANG enables control signal R_EN, it is also low electricity that green glow enables control signal G_EN
Flat, and blue light enables control signal B_EN when being high level, control signal generation module 601 generate the
One control signal be high level, the second control signal be low level, the first gating module 602 gates
B_PWM.Now red laser light source is closed, and blue laser light source is opened, and big according to B_PWM
The brightness of the first LASER Light Source is lighted in little generation.
Being high level when HONGGUANG enables control signal R_EN, it is also high electricity that green glow enables control signal G_EN
Flat, and blue light enables control signal B_EN when being low level, control signal generation module 601 generate the
One control signal be high level, the second control signal be low level, the first gating module 602 gates
Y_PWM.Now red laser light source is closed, and blue laser light source is opened, and big according to Y_PWM
The brightness of the first LASER Light Source is lighted in little generation.
Although having been described for the preferred embodiment of the application, but those skilled in the art once knowing base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the application scope.
Obviously, those skilled in the art can carry out various change and modification without deviating from this Shen to the application
Scope please.So, if the application these amendment and modification belong to the application claim scope it
In, then the application is also intended to comprise these change and modification.
Claims (10)
1. a two-color laser light source drives control circuit, it is characterised in that including:
Control signal generation module, for enabling control signal and second according to the first primary lights received
Primary lights enable control signal generate the first control signal and with described first control signal opposite in phase
Second control signal, described first control signal controls being turned on and off of the first LASER Light Source, and described second
Control signal controls being turned on and off of the second LASER Light Source；
First gating module, for enabling control signal according to described first primary lights, the second primary lights enable
Control signal and three primary colours light enable control signal and select from least one optical power signals received
A logical road signal is as first object optical power signals, and exports to described first LASER Light Source, in order to described
First LASER Light Source produces first laser signal corresponding with described first object optical power signals when opening；
Second gating module, for receiving the second target light power signal, and by described second target light power
Signal output is to described second LASER Light Source, in order to described second LASER Light Source produces when opening and described the
The second laser signal that two target light power signals are corresponding.
2. circuit as claimed in claim 1, it is characterised in that described second gating module, is used for connecing
Receive the second control signal of described control signal generation module output, and according to described second control signal, will
Described second target light power signal gating output is to described second LASER Light Source.
3. circuit as claimed in claim 1 or 2, it is characterised in that described first primary lights enable control
Signal processed is that green glow enables control signal, described second primary lights enable control signal is that blue light enables control letter
Number；
Described control signal generation module enables control signal, low level indigo plant at the green glow receiving high level
When light enables control signal, export the first control signal of high level, low level second control signal；Or
Person
Described control signal generation module is receiving low level green glow enable control signal, the indigo plant of high level
When light enables control signal, export the first control signal of high level, low level second control signal；Or
Person
Described control signal generation module enables control signal, low level indigo plant at the green glow receiving high level
When light enables control signal, export the first control signal of high level, low level second control signal；Or
Person
Described control signal generation module is receiving low level green glow enable control signal, low level indigo plant
When light enables control signal, the first control signal of output low level, the second control signal of high level.
4. circuit as claimed in claim 3, it is characterised in that described control signal generation module includes:
OR circuit and phase inverter；
Described OR circuit, receives described green glow and enables control signal and described blue light enable control signal,
And export described first control signal；
The input of described phase inverter electrically connects with the outfan of described OR circuit, receives described first and controls
Signal, and export described second control signal.
5. circuit as claimed in claim 4, it is characterised in that described three primary colours light enables and controls letter
Number for HONGGUANG enable control signal；At least one optical power signals described includes green glow power signal, blue light merit
Rate signal, gold-tinted power signal；
It is that low level, green glow enable control signal and be that HONGGUANG that first gating module receives enables control signal
When high level, blue light enable control signal is low level, gate defeated from least one optical power signals described
Go out green glow power signal；Or
It is that low level, green glow enable control signal and be that HONGGUANG that first gating module receives enables control signal
When low level, blue light enable control signal is high level, gate defeated from least one optical power signals described
Go out blue power signal；Or
It is that high level, green glow enable control signal and be that HONGGUANG that first gating module receives enables control signal
When high level, blue light enable control signal is low level, gate defeated from least one optical power signals described
Go out gold-tinted power signal.
6. circuit as claimed in claim 5, it is characterised in that described first gating module includes first
Data selector；
Described first data selector receives blue power by second input in signal input part to be believed
Number, received green glow power signal by the 3rd input in signal input part, by signal input part
The 7th input receive gold-tinted power signal；
Described first data selector enables control signal according to the blue light that address strobe end inputs, green glow enables
Control signal, HONGGUANG enable control signal from input described blue power signal, described green glow power signal,
Described gold-tinted power signal selects a road signal as described first object optical power signals, and by output
End exports described first object optical power signals.
7. circuit as claimed in claim 6, it is characterised in that described second target light power signal is
HONGGUANG power signal；
When the second control signal that described second gating module receives is high level, HONGGUANG power signal will be by
Gating output.
8. circuit as claimed in claim 7, it is characterised in that
Described second gating module includes the second data selector；
Described second data selector is received ground signalling by first input in signal input part, is led to
Second input crossed in signal input part receives HONGGUANG power signal；
The input that in the address input end of described second data selector, address bit is minimum and described phase inverter
Outfan electrical connection, receive described second control signal, and according to described second control signal by described red
Optical power signals selects output.
9. circuit as claimed in claim 6, it is characterised in that described circuit also includes:
Circuit protection module, including the first AND circuit, the second AND circuit, the 3rd AND circuit；
The input of described first AND circuit receives blue light respectively and enables control signal, function control signal；
The outfan of described first AND circuit and first in the address input end of described first data selector
Input electrically connects；
The input of described second AND circuit receives green glow respectively and enables control signal, function control signal；
The outfan of described second AND circuit and second in the address input end of described first data selector
Input electrically connects；
The input of described 3rd AND circuit receives HONGGUANG respectively and enables control signal, function control signal；
The outfan of described 3rd AND circuit and first in the address input end of described first data selector
Input electrically connects.
10. circuit as claimed in claim 9, it is characterised in that described function control signal is high level
Signal.
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| CN201610504763.9A CN105892213B (en) | 2016-06-30 | 2016-06-30 | A kind of two-color laser light source drive control circuit |
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