CN106502035A - A kind of laser source system - Google Patents
A kind of laser source system Download PDFInfo
- Publication number
- CN106502035A CN106502035A CN201611016319.9A CN201611016319A CN106502035A CN 106502035 A CN106502035 A CN 106502035A CN 201611016319 A CN201611016319 A CN 201611016319A CN 106502035 A CN106502035 A CN 106502035A
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- China
- Prior art keywords
- fluorescent powder
- laser
- region
- light
- color wheel
- Prior art date
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Classifications
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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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention relates to laser projection display field, discloses a kind of laser source system, and enough on the premise of specified fluorescent wheel substrate size, reduce the heat effect of fluorescent powder color wheel.The present invention includes driving means, light source module, beam splitter, optical concentration eyeglass, fluorescence wheel assembly, light filter and light-mixing machine；The fluorescence wheel assembly includes fluorescent powder color wheel and the drive motor for driving fluorescent powder color wheel periodic rotary；The fluorescent powder color wheel includes：The yellow fluorescent powder region for scribbling yellow fluorescent powder, the green emitting phosphor region for scribbling green emitting phosphor and blue light void region；Driving means are used for the light source module output driving current, and exciting light source module sends laser；After the laser that light source module sends is through spectrophotometric reflection, by the light-collecting lens focusing illumination on fluorescent powder color wheel；Driving means are radiated at the region of fluorescent powder color wheel according to laser, to the corresponding current value that light source module exports the region.The present invention is applied to laser writer.
Description
Technical field
The present invention relates to laser projection display field, more particularly to a kind of laser source system.
Background technology
Laser display apparatus combine semiconductor laser light resource as display light source by the use of fluorescent powder color wheel, in high power laser light
Under light source irradiation, the blue laser for exporting is beaten on fluorescent wheel different colours fluorescent material by lens focuss, produce red greenish-yellow
Three coloured light.With the increase of laser optical power, the bisque light conversion efficiency on fluorescent wheel also increases.The product of laser display at present
Fluorescent wheel is that the fluorescent material of different colours is respectively formed in the zones of different on colyliform substrate, as shown in figure 1, for example red glimmering
Guang Fen areas R, yellow fluorescent powder area Y, green emitting phosphor area G and transmission-type blue light paths area B.It is sequentially generated red, yellow, green, blue four
Coloured light, then the white light output of specific colour temperature is formed through combined optical system.
Application the method, using laser as excitation light source, can produce the projection light source of high brightness, and the program is asked
Topic is, as the power density of laser is high, when excitated fluorescent powder, fluorescent material itself can occur saturation effect and hot-quenching is gone out effect
Should, serious reduces luminous efficiency.This is primarily due to, and the R ＆ D design of the fluorescent material of Current commercial is all according to LED
Characteristics of luminescence customization, and the optical power density of LED is more much lower than the power density of laser, and fluorescent material is applied to laser therefore
On light source, the problem of urgent need to resolve is optical quenching problem, situation the about especially demand of brightness being improved constantly in consumer
Under, the luminous power of excitation light is also increasing, and the heat for therefore sending on Wavelength converter is also increasing, and then wavelength turns
The temperature more and more higher of conversion materials, this directly result in the decline of the efficiency of material for transformation of wave length, or even have impact on wavelength convert material
The long term reliability of material.How the luminous effect that laser light source power constantly lifted while greatly improve fluorescent material is solved
Rate.
Accordingly, it is desirable to provide a kind of fluorescent powder color wheel and laser driving apparatus are solving the Gao Gong of exciting light in prior art
Above technical problem existing for rate.
Content of the invention
The technical problem to be solved in the present invention is：A kind of laser source system is provided, enough in specified fluorescent wheel substrate size
On the premise of, reduce the heat effect of fluorescent powder color wheel.
For solving the above problems, the technical solution used in the present invention is：A kind of laser source system, including driving means,
Light source module, beam splitter, optical concentration eyeglass, fluorescence wheel assembly, light filter and light-mixing machine；The fluorescence wheel assembly includes fluorescence
Pink colour wheel and the drive motor for driving fluorescent powder color wheel periodic rotary；The fluorescent powder color wheel includes：Scribble yellow
The yellow fluorescent powder region of fluorescent material, the green emitting phosphor region and blue light void region that scribble green emitting phosphor；
The driving means are used for the light source module output driving current, and exciting light source module sends laser；Light source
After the laser that module sends is through spectrophotometric reflection, by the light-collecting lens focusing illumination on fluorescent powder color wheel；Described driving fills
Put the region that fluorescent powder color wheel is radiated at according to laser, to the corresponding current value that light source module exports the region.
Further, when laser exposes to certain region of fluorescent powder color wheel, the driving means are defeated to light source module
The current value for going out is less than or equal to the corresponding normalized current in the region.Wherein, fluorescent material can be obtained most equal to the normalized current
Good light efficiency, can further reduce fluorescent material heating less than the normalized current.
Further, the yellow fluorescent powder region, green emitting phosphor region include phosphor powder layer and reflective substrate, engrave
Dummy section includes transmissive substrate.
Further, the two-sided of reflective substrate is coated with metallic reflective coating, such as golden film, silverskin, aluminium film etc..
Specifically, the electric current of the driving means output is direct current or pulsed drive.
The invention has the beneficial effects as follows：In the present invention, when laser exposes to the fluorescent powder color wheel of zones of different, using little
In the corresponding normalized current for being equal to the region, optimal current value during maximum light efficiency output light flux is realized, such that it is able to effective
Three primary colours light maximum output luminous flux is improve while laser beam irradiation is effectively reduced in fluorescent powder color wheel temperature, thus can be
Reduce the heat effect of fluorescent powder color wheel on the premise of not increasing the board size of fluorescent powder color wheel, extend the service life of fluorescent material,
Reduce the production cost of fluorescent powder color wheel.
Description of the drawings
Fig. 1 is the structural representation of prior art fluorescent powder color wheel；
When Fig. 2 is fluorescent powder color wheel cycle movement in embodiment, yellow and green emitting phosphor are in different optical power densities
Excitation source irradiation under normalization brightness curve figure；
Fig. 3 is the light path schematic diagram of embodiment.
Number in figure：101 is driving means, and 102 is laser light source module, and 103 is beam splitter, and 104 is optical concentration mirror
Piece, 105 is fluorescent powder color wheel, and 106 is drive motor, and 107 is light filter, and 108 is light-mixing machine.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described further with regard to technical scheme.
As shown in figure 3, the present invention includes driving means 101, laser light source module 102, beam splitter 103, optical concentration mirror
Piece 104, fluorescent powder color wheel 105, drive motor 106, light filter 107 and light-mixing machine 108.The light filter 107 is used for light splitting
The light that device 103 is transmitted carries out optical filtering adjustment；The light-mixing machine 108 is used for for the light after the adjustment that filters being mixed into white light；
The driving means 101 send laser by current excitation LASER Light Source module 102, and laser reflects specific through beam splitter 103
Wavelength blue light, specific wavelength blue light through 104 focusing illumination of optical concentration eyeglass on fluorescent powder color wheel 105, in fluorescent powder color wheel
The hot spot of fixed size is formed on 105；Drive motor 106 is used for driving fluorescent powder color wheel 105 periodically to rotate；Fluorescence pink colour
Wheel 105 includes：The yellow fluorescent powder region for scribbling yellow fluorescent powder, the green emitting phosphor region for scribbling green emitting phosphor and blue light
Void region.
When blue laser is radiated in the yellow of fluorescent powder color wheel 105 and green emitting phosphor region, fluorescent material is stimulated,
The gold-tinted and green glow of certain bandwidth is given off, through the metal aluminium material reflection of the reflective substrate of fluorescent powder color wheel 105, is passed through again
Cross beam splitter 103 and realize transmission, red, yellow, and green light, 108 outgoing of last light-mixing machine is exported through light filter 107；Meanwhile, work as blue light
When laser is radiated at the void region of fluorescent powder color wheel 105, blue light is transmitted through specific blue light paths (not shown) and propagates, light splitting
Device 103 reflects, 107 transmission of light filter, finally enters 108 outgoing of light-mixing machine.Thus the system of embodiment is eventually through light-mixing machine
108 are output as red greenish-yellow blue four coloured light.
When Fig. 2 show 105 cycle movement of fluorescent powder color wheel, yellow and green emitting phosphor are in different optical power densities
Normalization brightness curve figure under excitation source irradiation.It is yttrium aluminium garnet fluorescent powder as shown in Figure 2, mainly includes in difference
The long YAG blooms of cardiac wave and the green powder of YAG, shown in figure for fluorescent material brightness and efficiency with the change of the driving current of excitation source
Reduce greatly, especially when the optical power density of excitation source increases to some specific threshold, the brightness of fluorescence radiation is in
The decline of avalanche type.Aforementioned optical power density refers to that exciting light incides the maximum luminous power inside the hot spot on fluorescent powder color wheel surface
Density.The generation of above phenomenon is constantly strengthened due to the brightness with exciting light, and the temperature of fluorescent material gradually rises, while companion
As efficiency constantly declines, and the decline of efficiency further increases the heat produced when fluorescent material itself lights, and forms one
The vicious cycle of positive feedback；When fluorescent material temperature is high arrives some threshold temperature, this vicious cycle forms snowslide effect
Should, ultimately result in the violent decline of fluorescence radiation brightness.
Fig. 2 by analysis, we can obtain YAG yellow fluorescent powders, YAG green emitting phosphors, the laser in maximum light efficiency
The corresponding optical power density value of light source, when the optical power density value of the blue light of LASER Light Source module generation exceedes this optical power density
During value, the output of fluorescent material light efficiency reduces.Due to facula area size of the laser projections on fluorescent powder color wheel 105 identical,
Big small light spot is specified to encourage light source power to determine so different laser optical power density values can be radiated on fluorescent wheel by change
Fixed, adjust when constant voltage output can further pass through regulation excitation light source output electric current again, i.e. the difference of fluorescent powder color wheel 105
The current value of the corresponding laser light source module 102 in region is different, can achieve to expose to different laser light work(on fluorescent powder color wheel 105
Rate density value regulation.
The rotating speed for assuming fluorescent powder color wheel is ω, and fluorescent powder color wheel has three areas of blue light that green, yellow plus hollow out is directed through
Domain constitutes, and the angle in each region is respectively φG、φY、φB, then time of laser beam irradiation same laser spots on phosphor powder layer
Interval t is can be calculated by formula below：T=1/ ω, then swash when laser beam irradiation is green on phosphor powder layer, yellow, blue
The time of luminous point is divided into tG、tY、tB, have tG=(1/ ω) * φG/360、tY=(1/ ω) * φY/360、tB=(1/ ω) * φB/
360.The then driving current input value of laser light source module and persistently the current value time is corresponding with fluorescent powder color wheel color.When
When the laser that laser light source module sends is radiated on yellow fluorescent powder colour wheel, light source module input current is IY, the electric current holds
The continuous time is tY=(1/ ω) * φY/360；When the laser that light source module sends is radiated on green emitting phosphor colour wheel, light source die
Group input current is IG, the current duration is tG=(1/ ω) * φG/360；When the laser that light source module sends be radiated at glimmering
Light pink colour wheel void region, laser are not interacted with fluorescent material, are directed through fluorescent wheel, anti-with fluorescent wheel by blue light paths
The red greenish-yellow light that penetrates is mixed to form picture white light systems.During through 105 void region of fluorescent powder color wheel, light source module input current
For IB, the current duration is tB=(1/ ω) * φB/360.
In summary, due to being coated with the phosphor powder layer of predetermined width and thickness, and fluorescence pink colour on fluorescent powder color wheel 105
The axle center cycle around fluorescent powder color wheel 105 is rotated under the driving of drive motor by wheel 105, by adjusting laser light source module
The current value of 102 driving currents, obtains the output of yellow-green fluorescence powder maximum lumen, and the present invention can not increase fluorescent powder color wheel
High power laser light source module 102 is realized on the premise of 105 sizes as excitation light source activation phosphor technologies, and the technology is effective
Reduce the heat effect of fluorescent powder color wheel 105, extend the service life of fluorescent material, while the production cost of reduction fluorescent material wheel,
Can achieve the maximum lumen output under the excitation light source.
The ultimate principle and main feature of the present invention is the foregoing described, the description of description simply illustrates the original of the present invention
Reason, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements
Both fall within scope of the claimed invention.
Claims (5)
1. a kind of laser source system, it is characterised in that including driving means, light source module, beam splitter, optical concentration eyeglass,
Fluorescence wheel assembly, light filter and light-mixing machine；The fluorescence wheel assembly includes fluorescent powder color wheel and is used for driving fluorescent powder color wheel
The drive motor of periodic rotary；The fluorescent powder color wheel includes：Scribble yellow fluorescent powder yellow fluorescent powder region, scribble green
The green emitting phosphor region and blue light void region of color fluorescent material；
The driving means are used for the light source module output driving current, and exciting light source module sends laser；Light source module
After the laser for sending is through spectrophotometric reflection, by the light-collecting lens focusing illumination on fluorescent powder color wheel；The driving means
According to the region that laser is radiated at fluorescent powder color wheel, to the corresponding current value that light source module exports the region.
2. a kind of laser source system according to claim 1, it is characterised in that when laser exposes to fluorescent powder color wheel
During certain region, the driving means are less than or equal to the corresponding normalized current in the region to the current value that light source module is exported.
3. a kind of laser source system according to claim 2, it is characterised in that the yellow fluorescent powder region, green
Phosphor area includes that phosphor powder layer and reflective substrate, void region include transmissive substrate.
4. a kind of laser source system according to claim 3, it is characterised in that the two-sided of reflective substrate is coated with metal
Reflectance coating.
5. a kind of laser source system according to claim 1, it is characterised in that the electric current of the driving means output is
Direct current or pulsed drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016319.9A CN106502035A (en) | 2016-11-18 | 2016-11-18 | A kind of laser source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016319.9A CN106502035A (en) | 2016-11-18 | 2016-11-18 | A kind of laser source system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106502035A true CN106502035A (en) | 2017-03-15 |
Family
ID=58324967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611016319.9A Pending CN106502035A (en) | 2016-11-18 | 2016-11-18 | A kind of laser source system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106502035A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037679A (en) * | 2017-04-28 | 2017-08-11 | 苏州佳世达光电有限公司 | A kind of projection arrangement |
| CN108931878A (en) * | 2017-05-26 | 2018-12-04 | 深圳市光峰光电技术有限公司 | Light-source system and display equipment |
| CN108957921A (en) * | 2017-05-17 | 2018-12-07 | 深圳市光峰光电技术有限公司 | Excitating light strength control system and optical projection system |
| CN112816446A (en) * | 2020-12-24 | 2021-05-18 | 四川长虹电器股份有限公司 | Method for detecting powder decay of fluorescent wheel based on fluorescence spectrum |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207668A (en) * | 2010-03-31 | 2011-10-05 | 卡西欧计算机株式会社 | Light source unit and projector |
| US20130077055A1 (en) * | 2011-09-22 | 2013-03-28 | Delta Electronics, Inc. | Phosphor device and illumination system and projection apparatus with the same |
| CN103091953A (en) * | 2011-10-31 | 2013-05-08 | 台达电子工业股份有限公司 | Light emitting module and display device |
| CN104298059A (en) * | 2014-10-20 | 2015-01-21 | 海信集团有限公司 | Laser light source and projection display device |
| CN105785700A (en) * | 2016-01-14 | 2016-07-20 | 四川长虹电器股份有限公司 | Laser display system |
-
2016
- 2016-11-18 CN CN201611016319.9A patent/CN106502035A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207668A (en) * | 2010-03-31 | 2011-10-05 | 卡西欧计算机株式会社 | Light source unit and projector |
| US20130077055A1 (en) * | 2011-09-22 | 2013-03-28 | Delta Electronics, Inc. | Phosphor device and illumination system and projection apparatus with the same |
| CN103091953A (en) * | 2011-10-31 | 2013-05-08 | 台达电子工业股份有限公司 | Light emitting module and display device |
| CN104298059A (en) * | 2014-10-20 | 2015-01-21 | 海信集团有限公司 | Laser light source and projection display device |
| CN105785700A (en) * | 2016-01-14 | 2016-07-20 | 四川长虹电器股份有限公司 | Laser display system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037679A (en) * | 2017-04-28 | 2017-08-11 | 苏州佳世达光电有限公司 | A kind of projection arrangement |
| CN107037679B (en) * | 2017-04-28 | 2019-08-30 | 苏州佳世达光电有限公司 | A kind of projection arrangement |
| CN108957921A (en) * | 2017-05-17 | 2018-12-07 | 深圳市光峰光电技术有限公司 | Excitating light strength control system and optical projection system |
| CN108957921B (en) * | 2017-05-17 | 2021-05-04 | 深圳光峰科技股份有限公司 | Excitation light intensity control system and projection system |
| CN108931878A (en) * | 2017-05-26 | 2018-12-04 | 深圳市光峰光电技术有限公司 | Light-source system and display equipment |
| CN112816446A (en) * | 2020-12-24 | 2021-05-18 | 四川长虹电器股份有限公司 | Method for detecting powder decay of fluorescent wheel based on fluorescence spectrum |
| CN112816446B (en) * | 2020-12-24 | 2022-02-01 | 四川长虹电器股份有限公司 | Method for detecting powder decay of fluorescent wheel based on fluorescence spectrum |
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Application publication date: 20170315 |
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