CN106371273B - Mixed light source device, light-emitting control method thereof and projection system - Google Patents
Mixed light source device, light-emitting control method thereof and projection system Download PDFInfo
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- CN106371273B CN106371273B CN201510427193.3A CN201510427193A CN106371273B CN 106371273 B CN106371273 B CN 106371273B CN 201510427193 A CN201510427193 A CN 201510427193A CN 106371273 B CN106371273 B CN 106371273B
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Abstract
The invention discloses a hybrid light source device, a light-emitting control method thereof and a projection system. The mixed light source device comprises a main light source for emitting exciting light, an infrared light source for emitting infrared light, a color wheel, a controller and a light modulator. The color wheel generates three visible lights under the irradiation of the exciting light. The controller is connected with the main light source and the infrared light source and used for outputting visible light control signals, and the infrared light is controlled to emit infrared light according to the visible light control signals by controlling the on and off states of the infrared light source. The light modulator modulates the three visible lights according to the visible light image signals; and modulates the infrared light according to the visible light image signal. The mixed light source device, the light-emitting control method thereof and the projection system form visible projection images and infrared projection images on the same screen, and the invention is expanded in the display function, so that the product has higher competitiveness and covers a larger application range.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a hybrid light source device, a light-emitting control method thereof and a projection system.
Background
At present, a spatial light modulator is widely applied in the field of projection Display, the spatial light modulator generally includes an LCD (Liquid Crystal Display), an LCOS (Liquid Crystal on Silicon, also called a Silicon-based Liquid Crystal), a DMD (Digital Mirror Device, Digital micro Mirror Device, Digital Micromirror element), and the like, and a monolithic spatial light modulator projection system realizes color projection Display based on visible light switched in a time sequence, and is widely applied in the middle and low end markets due to the characteristics of simple structure, low cost, and the like. In the aspect of a light source of a projection system, a semiconductor laser excites different fluorescent powder color sections on a color wheel to form different visible light.
The infrared region above 780nm, which is invisible to the human eye, is mainly generated in night environment where there are some demands for visibility of infrared light, such as military operations, but the existing projection system has no technology for displaying infrared images.
Disclosure of Invention
According to a first aspect of the present invention, there is provided a light emission control method of a hybrid light source device, the hybrid light source device including a main light source and an infrared light source, the hybrid light source device emitting visible light when the main light source is turned on, the hybrid light source device emitting infrared light when the infrared light source is turned on.
The light emission control method includes: receiving a visible light image signal, generating a visible light control signal and an infrared light control signal according to the visible light image signal, and controlling the opening of a main light source according to the visible light control signal so that the mixed light source device emits a visible light sequence; and during the visible light sequence emitted by the mixed light source device, controlling the infrared light source to be started according to the infrared light control signal, so that the mixed light source device emits infrared light.
The visible light sequence comprises two or more visible lights; and the mixed light source device controls the infrared light source to be started according to the infrared light control signal during the emitting of at least one visible light of the visible light sequence, so that the mixed light source device emits infrared light.
The visible light comprises a first visible light, a second visible light and a third visible light; the visible light image signal comprises a first visible light image signal, a second visible light image signal and a second visible light image signal.
The mode of emitting visible light by the mixed light source device is as follows: controlling the main light source to be started according to the first visible light control signal so that the mixed light source device emits first visible light; controlling the main light source to be started according to the second visible light control signal so that the mixed light source device emits second visible light; and controlling the main light source to be started according to the third visible light control signal so that the mixed light source device emits third visible light.
The infrared light control signal comprises a second infrared light control signal generated according to a second visible light image signal, and the mode of emitting infrared light by the mixed light source device is as follows: during the emitting of the second visible light by the mixed light source device, the infrared light source is controlled to be started according to the second infrared light control signal, so that the mixed light source device emits second infrared light; and controlling the infrared light source to be switched off during the emitting of the first visible light and the third visible light by the mixed light source device.
Or the infrared light control signal comprises a first infrared light control signal generated according to the first visible light image signal, a second infrared light control signal generated according to the second visible light image signal and a third infrared light control signal generated according to the third visible light image signal; the mode of emitting infrared light by the mixed light source device is as follows: during the first visible light emitting period of the mixed light source device, controlling the infrared light source to be started according to the first infrared light control signal, so that the mixed light source device emits first infrared light; during the emitting of the second visible light by the mixed light source device, the infrared light source is controlled to be started according to the second infrared light control signal, so that the mixed light source device emits second infrared light; and controlling the infrared light source to be started according to the third infrared light control signal during the emitting of the third visible light by the mixed light source device, so that the mixed light source device emits third infrared light.
The light emission control further includes: modulating the visible light emitted by the mixed light source device according to the visible light image signal, so that the modulated visible light is used for forming a visible projection image; and according to the visible light image signal, modulating the infrared light emitted by the mixed light source device, so that the modulated infrared light is used for forming an infrared projection image.
According to a second aspect of the present invention, there is provided a hybrid light source device comprising a primary light source, an infrared light source, a controller, the primary light source for emitting a visible light sequence; the infrared light source is used for emitting infrared light; or the mixed light source device comprises an excitation light source, an infrared excitation light source, a color light generating device and a controller, wherein the excitation light source is used for emitting excitation light; the infrared excitation light source is used for emitting infrared excitation light; the color light generating device is used for generating a visible light sequence under the irradiation of exciting light and generating infrared light under the irradiation of infrared exciting light emitted by the infrared light source; the controller is respectively connected with the main light source and the infrared light source and is used for receiving the visible light image signal, generating a visible light control signal and an infrared light control signal according to the visible light image signal, and controlling the main light source to be started according to the visible light control signal so that the mixed light source device emits a visible light sequence; and the infrared control circuit is also used for controlling the infrared light source to be started according to the infrared control signal during the visible light emitting period of the mixed light source device, so that the mixed light source device emits infrared light.
The main light source comprises an excitation light source for emitting excitation light and a color light generating device, the color light generating device comprises a primary color segment and an interval area, and the primary color segment generates a visible light sequence under the irradiation of the excitation light; the controller controls the main light source to be turned off and controls the infrared light source to be turned on when the color light generating device moves the spaced area onto the illumination path.
The visible light sequence comprises two or more visible lights; and the mixed light source device controls the infrared light source to be started according to the infrared light control signal during the emitting of at least one visible light of the visible light sequence, so that the mixed light source device emits infrared light.
The visible light comprises a first visible light, a second visible light and a third visible light; the visible light image signal comprises a first visible light image signal, a second visible light image signal and a second visible light image signal. The infrared light control signal comprises a second infrared light control signal generated according to a second visible light image signal, and the mode of emitting infrared light by the mixed light source device is as follows: during the period that the mixed light source device emits the second visible light, the controller controls the infrared light source to be started according to the second infrared light control signal, so that the mixed light source device emits the second infrared light; and controlling the infrared light source to be switched off during the emitting of the first visible light and the third visible light by the mixed light source device.
Or the infrared light control signal comprises a first infrared light control signal generated according to the first visible light image signal, a second infrared light control signal generated according to the second visible light image signal and a third infrared light control signal generated according to the third visible light image signal; the mode of emitting infrared light by the mixed light source device is as follows: the controller controls the infrared light source to be started according to the first infrared light control signal during the mixed light source device emits the first visible light, so that the mixed light source device emits the first infrared light; during the emitting of the second visible light by the mixed light source device, the infrared light source is controlled to be started according to the second infrared light control signal, so that the mixed light source device emits second infrared light; and controlling the infrared light source to be started according to the third infrared light control signal during the emitting of the third visible light by the mixed light source device, so that the mixed light source device emits third infrared light.
The controller enables the brightness ratio of the first infrared light, the second infrared light and the third infrared light emitted by the mixed light source device to be the same as the brightness ratio of the first visible light, the second visible light and the third visible light according to the first infrared light control signal, the second infrared light control signal and the third infrared light control signal. For example, the ratio of the first visible light to the second visible light to the third visible light is a: b: c, and the ratio of the first infrared light to the second infrared light to the third infrared light is a: b: c.
According to a third aspect of the present invention, there is provided a projection system comprising the hybrid light source device of any one of the above, further comprising a light modulator connected to the controller; the light modulator is used for modulating the visible light emitted by the mixed light source device according to the visible light image signal, so that the modulated visible light is used for forming a visible projection image; and the infrared light source device is also used for modulating the infrared light emitted by the mixed light source device according to the visible light image signal, so that the modulated infrared light is used for forming an infrared projection image.
The mixed light source device, the light emitting control method thereof and the projection system can alternately emit at least one visible light and infrared light of three visible lights, so that the visible light can be used for forming a visible projection image, and the infrared light is used for forming an infrared projection image.
Drawings
FIG. 1 is a schematic view of a projection system according to a first embodiment;
fig. 2 is a schematic structural diagram of a color wheel according to a first embodiment;
FIG. 3 is a schematic diagram illustrating the connection between the controller and the DMD according to the first embodiment;
FIG. 4 is a timing diagram of light emission according to the first embodiment;
FIG. 5 is a schematic diagram illustrating the connection between the controller and the DMD according to the second embodiment;
fig. 6 is a timing diagram of light emission according to the second embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
The prior art projection systems are directed to visible light in the 380nm-780nm wavelength band, which is recognizable to the human eye, and to infrared light regions above 780nm wavelength, which are invisible to the human eye, which are mainly generated in night environments where there are some demands for visibility of infrared light, such as in military operations. In order to expand the application field of projection display, the projection system can be applied to night simulation, so that the function of infrared display needs to be added on the basis of the existing projection system. From the perspective of a projection system, the invention provides a novel mixed light source device, a light-emitting control method thereof and a projection system using the same, wherein the novel mixed light source device has an infrared display function and requires an infrared light source, namely a mixed light source is adopted, and the key problem lies in the processing of image signals and the synchronous matching with the light source, namely a control device of the projection system is a key part.
The first embodiment is as follows:
as shown in fig. 1, the projection system of this embodiment includes a main light source 301, a first collecting lens 302, a color wheel 303, a second collecting lens 304, a square rod 305, a relay system 306, an infrared light source 307, a dichroic sheet 308, a tir (total internal reflection) prism 309, a DMD (Digital micromirror Device)310, a controller 311, and a projection lens 312.
The main light source 301, the first collecting lens 302, the color wheel 303, the infrared light source 307, and the controller 311 together form a hybrid light source device of the system.
The main light source 301 is a 445nm blue laser for emitting blue laser as excitation light, 307 is an 800nm IR (infrared) laser, and the blue laser emitted from the main light source 301 is collected by a collecting lens 302 and then incident on a color wheel 303.
The color wheel 303, which is a color light generating device of the hybrid light source device, has a structure as shown in fig. 2, and includes a red color segment region 001, a green color segment region 002, and a blue color segment region 003. When the projection system is in a working state, the color wheel 303 is driven by the driving device to rotate around the rotating shaft, and the light spot trajectory projected by the exciting light on the color wheel 303 forms a circular path. The light wavelength conversion material (phosphor) in the region where the light spot is located converts the excitation light into the stimulated light corresponding to the light wavelength conversion material, and the stimulated light of each color forms a color light sequence with a periodic time sequence, which is emitted from the color wheel 303. The time sequence RGB light emitted from the color wheel enters the square bar 305 after being collected by the collecting lens 304, and is converged by the light relay system 306 to the dichroic plate 308 after being homogenized by the square bar 305.
The blue segment region 003 can be coated with scattering powder to make the blue excitation light emit after partial coherence elimination.
The three-section color wheel 303 may also include a phosphor wheel and a corresponding filter wheel, the phosphor wheel is divided into three RGB sections, the blue light color section is a scattering powder section, and the red light filter section of the filter wheel corresponds to the red phosphor section for filtering out short wavelength parts in red fluorescence and unabsorbed blue light; the green light filter section corresponds to the green fluorescent powder section and is used for filtering the long wavelength part in the green fluorescent light and the unabsorbed blue light; the scattering powder section is used for scattering and decoherence of blue laser.
The dichroic sheet 308 has the characteristics of reflecting visible light (400nm-750nm waveband) and transmitting infrared light (more than 750 nm), so that RGB visible light and IR light are combined at the dichroic sheet 308, the combined light beam reaches the TIR prism 309 and reaches the DMD310 after being reflected, the DMD310 modulates the incident light under the control of the controller 311, and the modulated light is reflected and transmitted by the TIR prism 309 and finally imaged by the lens 312.
The infrared light source 307 is used to emit infrared light. Specifically, the infrared light source 307 may be an infrared laser light source to emit infrared laser light; or an infrared LED, for emitting infrared light.
The principle of the controller 311 for light emission and imaging of the present system is described in detail below.
As shown in fig. 3, the controller 311 has a DVI (Digital Visual Interface) input terminal, i.e., a Digital video Interface 401, the Digital video Interface 401 inputs RGB image signals, which include an R image signal for modulating red light, a G image signal for modulating green light, and a B image signal for modulating blue light, wherein the DMD310 modulates infrared light according to the G image signal. The controller 311 further includes a DDP (Distributed Data Processor) 403, the image signal is input to the DDP 403 via the digital video interface 401, the DDP 403 outputs a time-sequential R-G-B signal to the DMD on the one hand, so that the DMD310 flips according to the set segmentation angle, on the other hand, the DDP 403 is respectively connected to the main light source 301 and the infrared light source 307, the DDP 403 generates an R control signal according to the R image signal, a G control signal according to the G image signal, a B control signal according to the B image signal, and a second IR control signal according to the G image signal; thereby controlling the on and off states of the main light source 301 and the infrared light source 307 and ensuring that the light emitting time sequences of the two light sources are synchronous with the signal transmission time sequence of the DMD 310.
As shown in fig. 4, the DMD modulation timing is synchronized with the color wheel timing at controller 311. During the period that the digital video interface 401 inputs the R image signal, that is, during the period that the main light source 301 receives the R control signal and the DMD310 receives the R image signal, the main light source 301 is turned on to emit the excitation light and the infrared light source 307 is turned off, the rotation of the color wheel 303 causes the excitation light to just irradiate the red light segment area 001, so that the red visible light is emitted from the color wheel 303, and the DMD modulates the red light according to the R image signal; thereupon, during the period when the main light source 301 receives the G control signal and the DMD310 receives the G image signal, the main light source 301 remains on to emit excitation light, the rotation of the color wheel 303 causes the excitation light to just irradiate the green color segment region 002, thereby emitting green visible light from the color wheel 303, and the DMD modulates the green light according to the G image signal, and at the same time, the infrared light source 302 receives the second IR control signal, thereby turning on and emitting infrared light, the DMD modulates the infrared light according to the G image signal; thereupon, during the period when the main light source 301 receives the B control signal and the DMD310 receives the B image signal, the main light source 301 remains on to emit excitation light and the infrared light source 307 is off, the rotation of the color wheel 303 causes the excitation light to just illuminate the blue color segment region 003, thereby emitting blue visible light from the color wheel 303, and the DMD modulates blue light according to the B image signal.
In the present invention, the excitation light emitted by the main light source 301 is not utilized by the color wheel and/or DMD, i.e., the main light source 301 is considered to be turned off, and the utilized period thereof is turned on; the same is true for infrared light sources. Therefore, it is well within the ability of those skilled in the art to block the infrared light source 307 during the input of the R image signal and the B image signal at the digital video interface 401 so that the infrared thereof is not utilized, in the same sense that the infrared light source 307 is turned off.
By the control method, the excitation light irradiates the color wheel 303 so that the color wheel 303 generates and emits red, green and blue light sequences, and the infrared light source 307 is controlled to emit infrared light during the green light generation period, the infrared light and the red, green and blue light sequences are exactly corresponding in time sequence, and the infrared light and the red, green and blue light are physically combined to form an R- (G + IR) -B light sequence. I.e. the IR light is combined into the G light segment, i.e. the final emergent image is an RGB visible light image and an IR light image with G signal.
The DMD310 modulates red light, green light, and blue light in the RGB light sequence, respectively, so that the red, green, and blue light sequence projected onto the screen by the projection lens forms an image visible to naked eyes, and the RGB light sequence is continuously generated, so that the change of the image generates a dynamic effect.
Since the R- (G + IR) -B light sequence is generated continuously, the infrared light itself also forms an infrared light sequence, the DMD310 modulates each segment of infrared light in the infrared light sequence to project the modulated infrared light through the projection lens onto the screen to form an infrared image, the infrared image is continuously changed to generate a dynamic effect, and the infrared image is displayed in the form of an infrared image for the green light image obtained by individually modulating the green light image. The user only needs to wear Night Vision Glasses (NVG) to see the IR light image. The DMD control device is synchronized with the color wheel and simultaneously with the IR light source to achieve the coordinated switching off of the IR light source 307 and the primary light source 301.
Certainly, the present embodiment is not limited to this, and one or two of the IR light and the R, G, B light may be emitted simultaneously according to specific situations, and the visible light color wheel is not limited to the RGB three-segment color wheel either, and may be an RGBY (red, green, blue, yellow) four-segment color wheel or an RGBYW (red, green, blue, yellow, white) five-segment color wheel; in the aspect of the color wheel structure, the manner provided by the present embodiment is a transmissive color wheel, and in specific implementation, the color wheel is not limited to a transmissive color wheel, and may also be a reflective color wheel.
In the embodiment, timing IR light is added outside RGB visible light, and RGB image signals are input through the DVI, so that the projector can project RGB visible light images and IR light images which are not interfered with each other and are independent of each other at the same time, night vision becomes possible by wearing night vision glasses, namely the IR images projected by the projector can be watched, the application of the projector in a night vision environment is expanded, and the projector can be applied to various special occasions, such as a training simulator for training pilots. Meanwhile, the display function of the projection system is added, so that the product is more competitive.
In other embodiments of the present invention, Lcos (Liquid Crystal On Silicon, also called Silicon-based Liquid Crystal or single Crystal Silicon reflective Liquid Crystal) can be used to replace DMD, so as to realize the same function as DMD.
Example two:
in the first embodiment, the IR light is turned on in the RGB three segments of the color wheel, so that the DMD outputs a time-sequential RGB visible light image and a time-sequential IR light image with RGB signals, and the control part of the principle is as shown in fig. 5, the digital video interface 401 inputs the RGB image signals, and the RGB image signals are transmitted to the DMD310 through the DDP 403, and the DDP 403 is connected to the main light source 301 and the infrared light source 307. At the same time as the RGB visible light is output, the light emitting device also outputs IR1, IR2, and IR3 infrared light corresponding to R, G, B light.
That is, the DDP 403 generates an R control signal from the R image signal, a G control signal from the G image signal, and a B control signal from the B image signal, and also generates a first IR control signal from the R image signal, a second IR control signal from the G image signal, and a third IR control signal from the R image signal.
During the period that the main light source 301 receives the R control signal and the DMD310 receives the R image signal, the main light source 301 is kept on to emit excitation light, the rotation of the color wheel 303 causes the excitation light to just irradiate the red color segment region 002, so that red visible light is emitted from the color wheel 303, and the DMD modulates the red light according to the R image signal, meanwhile, the infrared light source 302 receives the first IR control signal, so that infrared light is turned on and emitted, and the DMD modulates the infrared light according to the R image signal;
during the period that the main light source 301 receives the G control signal and the DMD310 receives the G image signal, the main light source 301 is kept on to emit excitation light, the rotation of the color wheel 303 causes the excitation light to just irradiate the green color segment region 002, so that green visible light is emitted from the color wheel 303, and the DMD modulates green light according to the G image signal, meanwhile, the infrared light source 302 receives a second IR control signal, so that infrared light is turned on and emitted, and the DMD modulates infrared light according to the G image signal;
during the period that the main light source 301 receives the B control signal and the DMD310 receives the B image signal, the main light source 301 is kept on to emit excitation light, the rotation of the color wheel 303 causes the excitation light to just irradiate the blue light segment region 002, so that blue visible light is emitted from the color wheel 303, and the DMD modulates the blue light according to the B image signal, meanwhile, the infrared light source 302 receives a third IR control signal, so that infrared light is turned on and emitted, and the DMD modulates the infrared light according to the B image signal;
for example, if a pixel RGB signal value is (50, 40, 30), the luminance of each pixel is Y50 a/255+ 40B/255 +30 c/255, wherein a, B, c represents the luminance of each segment R, G, B, c, since the IR light emission is controlled by using the same signal value (50, 40, 30), in order to ensure that the pixel luminance is not distorted, the luminance value of the infrared light is adjusted to Y' 50 d/255+40 e/255+30 f/255, wherein the IR light is divided into a first infrared light 1, a second infrared light 2, a third infrared light 382, a third infrared light 389 d/255 f/255, the luminance value of each segment R, d
The infrared light source 414 may also emit infrared excitation light, and correspondingly, the infrared segment 005 of the color wheel 408 is coated with a material that generates infrared light upon receiving illumination from the infrared excitation light.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. It will be apparent to those skilled in the art that a number of simple derivations or substitutions can be made without departing from the inventive concept.
Claims (8)
1. The light-emitting control method of the mixed light source device is characterized in that the mixed light source device comprises a main light source and an infrared light source, the mixed light source device emits visible light when the main light source is started, and the mixed light source device emits infrared light when the infrared light source is started;
the method comprises the following steps:
receiving a visible light image signal, generating a visible light control signal and an infrared light control signal according to the visible light image signal, and controlling the main light source to be turned on according to the visible light control signal so that the mixed light source device emits a visible light sequence;
during the visible light emitting sequence of the mixed light source device, controlling the infrared light source to be started according to the infrared light control signal, so that the mixed light source device emits infrared light;
the visible light comprises first visible light, second visible light and third visible light; the visible light image signal comprises a first visible light image signal, a second visible light image signal and a third visible light image signal,
the mode of emitting visible light by the mixed light source device is as follows: generating a first visible light control signal according to the first visible light image signal to control the main light source to be turned on, so that the mixed light source device emits first visible light; generating a second visible light control signal according to the second visible light image signal to control the main light source to be turned on, so that the mixed light source device emits second visible light; generating a third visible light control signal according to the third visible light image signal to control the main light source to be turned on, so that the mixed light source device emits third visible light;
the infrared light control signal comprises a second infrared light control signal generated according to the second visible light image signal, and the mode of emitting infrared light by the mixed light source device is as follows: during the period that the mixed light source device emits second visible light, controlling the infrared light source to be started according to the second infrared light control signal, so that the mixed light source device emits second infrared light; controlling the infrared light source to be turned off during the first visible light and the third visible light emitted by the mixed light source device;
or the infrared light control signal comprises a first infrared light control signal generated according to the first visible light image signal, a second infrared light control signal generated according to the second visible light image signal, and a third infrared light control signal generated according to the third visible light image signal; the mode of emitting infrared light by the mixed light source device is as follows: controlling the infrared light source to be started according to the first infrared light control signal during the first visible light emitting period of the mixed light source device, so that the mixed light source device emits first infrared light; during the period that the mixed light source device emits second visible light, controlling the infrared light source to be started according to the second infrared light control signal, so that the mixed light source device emits second infrared light; and controlling the infrared light source to be started according to the third infrared light control signal during the emitting of the third visible light by the mixed light source device, so that the mixed light source device emits third infrared light.
2. The method of claim 1, wherein the visible light sequence comprises two or more visible lights;
and the mixed light source device controls the infrared light source to be started according to the infrared light control signal during the period of emitting at least one visible light of the visible light sequence, so that the mixed light source device emits infrared light.
3. The method of any of claims 1-2, further comprising:
according to the visible light image signal, the visible light emitted by the mixed light source device is modulated, so that the modulated visible light is used for forming a visible projection image;
and modulating the infrared light emitted by the mixed light source device according to the visible light image signal, so that the modulated infrared light is used for forming an infrared projection image.
4. A hybrid light source device is characterized in that,
the infrared light source is used for emitting a visible light sequence; the infrared light source is used for emitting infrared light;
or the mixed light source device comprises an excitation light source, an infrared excitation light source, a color light generating device and a controller, wherein the excitation light source is used for emitting excitation light; the infrared excitation light source is used for emitting infrared excitation light; the color light generating device is used for generating a visible light sequence under the irradiation of the exciting light and generating infrared light under the irradiation of infrared exciting light emitted by an infrared light source;
the controller is respectively connected with the main light source and the infrared light source and is used for receiving visible light image signals, generating visible light control signals and infrared light control signals according to the visible light image signals, and controlling the main light source to be started according to the visible light control signals so that the mixed light source device emits visible light sequences; the infrared light source is controlled to be started according to the infrared light control signal during the visible light emitting period of the mixed light source device, so that the mixed light source device emits infrared light;
the visible light comprises first visible light, second visible light and third visible light; the visible light image signals comprise a first visible light image signal, a second visible light image signal and a third visible light image signal;
the infrared light control signal comprises a second infrared light control signal generated according to the second visible light image signal, and the mode of emitting infrared light by the mixed light source device is as follows: during the period that the mixed light source device emits second visible light, the controller controls the infrared light source to be started according to the second infrared light control signal, so that the mixed light source device emits second infrared light; controlling the infrared light source to be turned off during the first visible light and the third visible light emitted by the mixed light source device;
or the infrared light control signal comprises a first infrared light control signal generated according to the first visible light image signal, a second infrared light control signal generated according to the second visible light image signal, and a third infrared light control signal generated according to the third visible light image signal; the mode of emitting infrared light by the mixed light source device is as follows: the controller controls the infrared light source to be started according to the first infrared light control signal during the mixed light source device emits first visible light, so that the mixed light source device emits first infrared light; during the period that the mixed light source device emits second visible light, controlling the infrared light source to be started according to the second infrared light control signal, so that the mixed light source device emits second infrared light; and controlling the infrared light source to be started according to the third infrared light control signal during the emitting of the third visible light by the mixed light source device, so that the mixed light source device emits third infrared light.
5. The apparatus according to claim 4, wherein the primary light source comprises an excitation light source for emitting excitation light and a color light generating means comprising primary color segments and spaced regions, the primary color segments producing a visible light sequence upon illumination by the excitation light; when the color light generating device moves the interval area to the illumination path, the controller controls the main light source to be turned off and controls the infrared light source to be turned on.
6. The apparatus of claim 4, wherein the visible light sequence comprises two or more visible lights;
and the mixed light source device controls the infrared light source to be started according to the infrared light control signal during the period of emitting at least one visible light of the visible light sequence, so that the mixed light source device emits infrared light.
7. The apparatus of claim 4, wherein the controller causes the first infrared light, the second infrared light, and the third infrared light emitted from the hybrid light source apparatus to have the same brightness ratio as the first visible light, the second visible light, and the third visible light according to the first infrared light control signal, the second infrared light control signal, and the third infrared light control signal.
8. A projection system comprising the hybrid light source device of any one of claims 4-7, further comprising a light modulator connected to the controller;
the light modulator is used for modulating the visible light emitted by the mixed light source device according to the visible light image signal, so that the modulated visible light is used for forming a visible projection image;
and the infrared light source device is also used for modulating the infrared light emitted by the mixed light source device according to the visible light image signal, so that the modulated infrared light is used for forming an infrared projection image.
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| CN201510427193.3A CN106371273B (en) | 2015-07-20 | 2015-07-20 | Mixed light source device, light-emitting control method thereof and projection system |
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| CN201510427193.3A CN106371273B (en) | 2015-07-20 | 2015-07-20 | Mixed light source device, light-emitting control method thereof and projection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109426052B (en) * | 2017-08-24 | 2021-04-06 | 深圳光峰科技股份有限公司 | Projection system |
| CN109976076B (en) * | 2017-12-28 | 2021-07-23 | 深圳光峰科技股份有限公司 | Wavelength conversion device, light source device and projection equipment |
| JP7218106B2 (en) * | 2018-06-22 | 2023-02-06 | 株式会社Ｊｖｃケンウッド | Video display device |
| CN113281951A (en) * | 2020-02-19 | 2021-08-20 | 深圳光峰科技股份有限公司 | Projection equipment, projection system and projection method |
| CN114157845B (en) * | 2020-09-08 | 2023-09-26 | 青岛海信激光显示股份有限公司 | projection system |
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