CN106324963A - Novel transmission-type backlight source device applying wavelength conversion principle - Google Patents
Novel transmission-type backlight source device applying wavelength conversion principle Download PDFInfo
- Publication number
- CN106324963A CN106324963A CN201611007684.3A CN201611007684A CN106324963A CN 106324963 A CN106324963 A CN 106324963A CN 201611007684 A CN201611007684 A CN 201611007684A CN 106324963 A CN106324963 A CN 106324963A
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- light
- fluorescent material
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- laser
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a novel transmission-type projection light source device applying the wavelength conversion principle. An excitation light source is UV (ultraviolet) laser or short wavelength blue laser, is scattered by a laser spot diffuser and then enters a transmission-type fluorescent powder wheel through a lens. A base layer of the transmission-type fluorescent powder wheel is made of transparent inorganic glass materials and can transmit light in a visible light wave band, the surface of the transmission-type fluorescent powder wheel facing the excitation light source is coated with three-color fluorescent powder, UV and short wavelength blue light can be absorbed and respectively converted into red, green and blue light to be emitted, and the other surface of the transmission-type fluorescent powder wheel is coated with UV and short wavelength blue light reflecting coatings for preventing the UV and the short wavelength blue light from transmission. The novel transmission-type projection light source device has the advantages that danger caused by laser direct irradiation to human bodies is effectively avoided in a wavelength conversion light source with laser as an excitation source, harm of near ultraviolet blue light to human eyes is avoided, and speckle noise of display image pictures is eliminated.
Description
Technical field
The present invention relates to a kind of novel transmissive projection light supply apparatus applying wavelength convert principle, for liquid crystal, DLP,
The projection light source of LCOS etc..
Background technology
LASER Light Source starts extensively to apply in projection, flat display field at present.Owing to tricolor laser technology does not become
Ripe, generally use one-wavelength laser+other light source (LED light source or fluorescent material stimulated lighting devices).Generally use blue light
Laser (generally at 440nm 470nm) is as excitaton source, and two kinds of fluorescent material red, green, as the light source that is stimulated, are finally accomplished that
Blue laser+redness is excited light source+green and is excited the mixing light source of light source.Blue light in mixing light source is swashing of single wavelength
Light, considers for launching efficiency, the wavelength of blue light is the shortest simultaneously.Therefore the blue light ingredient in mixing light source is to human eye and people
Body health has relatively major injury.On the other hand, laser straight picks out to be penetrated, and also brings serious image frame speckle noise problem.
In typical projection light source is applied, the mode of fluorescent material wheel, typical reflective fluorescent material wheel is generally used to constitute
Structure, its principle is that LASER Light Source (blue light) is irradiated on fluorescent material wheel by two after color separation film reflects, the knot of fluorescent material wheel
Structure is disk, and disk is divided into trisection (120 ° for portion), and a copy of it is transparent window, other two parts be respectively coated red and
Green fluorescent powder, red and green fluorescent powder the partially-excited light of coating launches HONGGUANG and green glow, respectively through fluorescence after exciting
Lens before powder wheel penetrate two after assembling and enter projection imaging light path to color separation film.
After the blue light transparent window through fluorescent material wheel, through reclaiming light path after two to color separation film reflection with red, green
Light is mixed into imaging optical path.Speed that fluorescent material wheel is rotated by control, sequential control the color of final emergent light.
The subject matter of this projection structure is due to exit directions red, that green glow is different with blue light, individually designed blue light
The light path reclaimed, optical system is more complicated, similarly, since LASER Light Source has been mixed into final mixed light as blue light ingredient
In, consider that as launching efficiency the wavelength of blue light is general shorter (typically at 450nm).Therefore the blue light color laser in mixing light source
Composition has relatively major injury to human eye and health, the most inevitably brings the speckle noise of display image frame to ask
Topic.
At present, photopeak science and technology already allows for the problems referred to above and starts develop correlation technique and applied for patent.It is typical
Patent is " light source based on wavelength convert and secondary excitation method thereof " number of patent application 201010531498.6: the first peak value ripple
The excitation source of long exciting light (UV light), utilizes the first optical wavelength conversion material, is used for absorbing exciting light exciting and has the
The light (blue light) of two peak wavelengths；Include the second optical wavelength conversion material simultaneously, be used for absorbing this and there is the second peak wavelength
Light also excites the stimulated luminescence with the 3rd peak wavelength (HONGGUANG, green glow).The benefit of this kind of way also can be prevented effectively from original
The problem of the direct outgoing of light source.But owing to have employed the mode of secondary excitation, efficiency is necessarily greatly affected, simultaneously blue light
Being emergent light, be the excitaton source of the 3rd peak wavelength the most simultaneously, for guaranteed efficiency, the wavelength of blue light is the shortest, directly
Outgoing can produce relatively major injury to human eye, and image frame speckle noise problem still exists simultaneously.
Summary of the invention
It is desirable to provide a kind of novel transmissive projection light supply apparatus applying wavelength convert principle, solve with laser
Display light source blue light as excitaton source endangers and speckle noise problem.
The technical scheme is that a kind of novel transmissive projection light supply apparatus applying wavelength convert principle, it is special
Levy and be, including the LASER Light Source set gradually from rear to front along optical axis, laser facula diffusion sheet, transmission-type fluorescent material wheel, filter
Photosphere, battery of lens and light pipe, wherein:
Described excitation source is UV laser or short wavelength's blue laser, and wave-length coverage is 300 410nm；This excitation source warp
After crossing the scattering of laser facula diffusion sheet, take turns through lens entrance transmission-type fluorescent material；
The basic unit of this transmission-type fluorescent material wheel is transparent inorganic glass material, and basic unit is transmissive to the light of visible light wave range, thoroughly
Penetrate formula fluorescent material wheel face and be coated with red, green, blue three-color phosphor to the surface of excitation source, it is possible to absorb UV or short wavelength is blue
Light, is respectively converted into red, green, blue three coloured light outgoing by UV or short wavelength's blue light；Another topcoating UV of this transmission-type fluorescent material wheel
With short wavelength's blu-ray reflection coating, it is used for preventing UV and short wavelength's blue light from passing through.
The invention have the advantage that at laser as in the wavelength conversion type light source of excitaton source, be prevented effectively from laser direct projection people
The danger that body causes, and solve the injury for human eye of the near ultraviolet blue light, the speckle simultaneously eliminating display image frame is made an uproar
Sound.Both take into account safety, take into account again display performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the fluorescent material distribution schematic diagram of fluorescent material of the present invention wheel；
Fig. 3 is the essential structure schematic diagram of the light source that the present invention uses.
Detailed description of the invention
See Fig. 1 and 2, a kind of novel transmissive projection light supply apparatus applying wavelength convert principle of the present invention, its feature
It is, including the LASER Light Source 1 set gradually from rear to front along optical axis, laser facula diffusion sheet 2, transmission-type fluorescent material wheel 9, filter
Photosphere 6, battery of lens 7 and light pipe (Light Tunnel) 8.The basic unit of this transmission-type fluorescent material wheel 9 is transparent inorganic glass material
Material, basic unit is transmissive to the light of visible light wave range, transmission-type fluorescent material wheel 9 be coated with towards the surface of excitation source red, green,
Blue three-color phosphor, it is possible to absorb UV or short wavelength's blue light, be respectively converted into red, green, blue three coloured light outgoing；This transmission-type
Another topcoating UV of fluorescent material wheel 9 and short wavelength's blu-ray reflection coating, be used for preventing UV and short wavelength's blue light from passing through.Wherein:
1) excitation source 1 described in is UV laser or short wavelength's blue laser, and wave-length coverage is 300 410nm；This excitation source
1 after laser facula diffusion sheet 2 scatters, and takes turns 9 through lens 4 incident transmission formula fluorescent material.
2) basic unit of fluorescent material wheel 9 is transparent inorganic glass material, and basic unit can be with the light source of transmission visible light wave range, fluorescence
Powder takes turns 9 surfaces (towards LASER Light Source face) coating red, green, blue three-color phosphor, can absorb UV or short wavelength's blue light, by UV or
Short wavelength's blue light is respectively converted into red, green, blue three coloured light outgoing.Wherein:
Blue light wavelength is 460 480nm.
Green wavelength is 530 570nm.
Red light wavelength is 620 640nm.
Fluorescent material can be made with quanta point material.The feature of quanta point material is to absorb the light emission of shorter wavelength
The light of longer wavelength.The wavelength of emergent light is controlled by the particle diameter of quantum dot, it is possible to be accurately obtained required wavelength, and
There is narrower half-wave width.
4) it is coated with fluorescent material on fluorescent material wheel 9, and is coated with UV and the painting of short wavelength's blu-ray reflection at back (light source exit facet)
Layer, is possible to prevent UV and short wavelength's blue light to pass through.The coating method of fluorescent material includes, be not limited to following two mode:
A) surface of fluorescent material wheel 9 coated by the fluorescent material of three kinds of Feature Conversion wavelength after uniformly mixing.
B) the fluorescent material uniform intervals of three kinds of Feature Conversion wavelength is coated on fluorescent material and takes turns 9 surfaces, is divided into by disk third
Point, the corresponding 120 ° of central angles of every equal portions.As shown in Figure 2.
5) from projection fluorescent material take turns 9 phosphor powder layer outgoing red, green, blue trichroism light transmission fluorescent material wheel basic unit after through filter
Photosphere 6 outgoing is to projection imaging light path.The effect of filter layer 6 is by excitation source 1(ultraviolet light or short wavelength's blue light) it is blocked in
Outside final emergent light so that user avoids the injury that laser, short wavelength's blue light cause.
6) emergent light of filter layer 6 enters light pipe 8 after battery of lens 7, comprises the light of red, green, blue three primary colours.If
Fluorescent material wheel 9 have employed quanta point material, and the half-wave width of the light of the red, green, blue three primary colours of the white light of outgoing can be at below 40nm.
It is applied to Projection Display and will obtain higher gamut range (> 100%NTSC).
Seeing Fig. 3, the basic structure of the Novel projection light supply apparatus foundation of present invention application wavelength convert principle is the most special
Levy as follows:
1) excitation source 1: for UV laser or short wavelength's blue laser, wave-length coverage is 300 410nm.
2) wavelength conversion layer A: be equivalent to the transmission fluorescent material in above-described embodiment and take turns the fluorescent material (layer) on 9 surfaces, mainly
Effect is to absorb UV or short wavelength's blue light, and UV or short wavelength's blue light are converted to red, green, blue three coloured light outgoing.Wherein:
Blue light wavelength is 460 480nm.
Green wavelength is 530 570nm.
Red light wavelength is 620 640nm.
Wavelength conversion layer A can make with quanta point material, and the feature of quanta point material can absorb shorter wavelength
The light of light emission longer wavelength.The wavelength of emergent light is controlled by the particle diameter of quantum dot, it is possible to be accurately obtained required ripple
Long, and have narrower half-wave width.
3) effect of filter layer 6 is the light of the most fully reflective UV wave band (300 410nm), the most wholly transmissive
The light of visible light wave range (440 650nm).It addition, excitation source (ultraviolet light or short wavelength's blue light) is blocked in by filter layer 6
Outside whole emergent light so that user avoids the injury that laser, short wavelength's blue light cause.
4) emergent light of filter layer 6 is white light, comprises the light of red, green, blue three primary colours.If wavelength conversion layer A have employed
Quanta point material, the half-wave width of the light of the red, green, blue three primary colours of the white light of outgoing can be at below 40nm.It is applied to liquid crystal display
Or Projection Display will obtain higher gamut range (> 100%NTSC).
Claims (4)
1. the novel transmissive projection light supply apparatus applying wavelength convert principle, it is characterised in that include along optical axis from rear
To the LASER Light Source 1 front set gradually, laser facula diffusion sheet 2, transmission-type fluorescent material wheel 9, filter layer 6, battery of lens 7 and leaded light
Pipe 8, wherein:
Described excitation source 1 is UV laser or short wavelength's blue laser, and wave-length coverage is 300 410nm；This excitation source 1
After laser facula diffusion sheet 2 scatters, take turns 9 through lens 4 incident transmission formula fluorescent material；
The basic unit of this transmission-type fluorescent material wheel 9 is transparent inorganic glass material, and basic unit is transmissive to the light of visible light wave range, thoroughly
Penetrate the formula fluorescent material wheel 9 coating quantum dot red, green, blue three primary colours light-converting material in surface towards excitation source, it is possible to absorb UV
Light or short wavelength's blue light, be respectively converted into red, green, blue three coloured light outgoing；Another topcoating UV of this transmission-type fluorescent material wheel 9
Or short wavelength's blu-ray reflection coating, it is used for preventing UV or short wavelength's blue light from passing through.
The novel transmissive projection light supply apparatus of application wavelength convert principle the most according to claim 1, it is characterised in that
Described transmission-type fluorescent material is taken turns the fluorescent material quanta point material on 9 surfaces and is made, and the peak wavelength of emergent light is by quantum dot
Particle diameter controls, it is possible to is accurately obtained required wavelength, and has narrower half-wave width.
The novel transmissive projection light supply apparatus of application wavelength convert principle the most according to claim 1, it is characterised in that
The coating method of the fluorescent material that 3 surfaces taken turns by described transmission-type fluorescent material includes, be not limited to following two mode:
A) fluorescent material wheel surface coated by the fluorescent material of three kinds of Feature Conversion wavelength after uniformly mixing；Or:
B) the fluorescent material uniform intervals of three kinds of Feature Conversion wavelength is coated on fluorescent material and takes turns 9 surfaces, disk is divided into three equal parts, often
The corresponding 120 ° of central angles of equal portions.
The novel transmissive projection light supply apparatus of application wavelength convert principle the most according to claim 1, it is characterised in that
The effect of described filter layer 6 is the ultraviolet light sent by excitation source 1 or short wavelength's blue light be blocked in final emergent light it
Outward so that user avoids the injury that laser, short wavelength's blue light cause, and eliminates the speckle noise of display image frame simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007684.3A CN106324963A (en) | 2016-11-16 | 2016-11-16 | Novel transmission-type backlight source device applying wavelength conversion principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007684.3A CN106324963A (en) | 2016-11-16 | 2016-11-16 | Novel transmission-type backlight source device applying wavelength conversion principle |
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| CN106324963A true CN106324963A (en) | 2017-01-11 |
Family
ID=57817576
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| CN201611007684.3A Pending CN106324963A (en) | 2016-11-16 | 2016-11-16 | Novel transmission-type backlight source device applying wavelength conversion principle |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908995A (en) * | 2017-03-29 | 2017-06-30 | 深圳市国显科技有限公司 | A kind of field sequence LCD device and projecting apparatus of use quanta point material |
| CN106918544A (en) * | 2017-03-29 | 2017-07-04 | 中国科学院苏州生物医学工程技术研究所 | A kind of flow cytometer showed instrument system based on fluorescence excitation light source |
| CN107272186A (en) * | 2017-06-27 | 2017-10-20 | 湖北久之洋信息科技有限公司 | A kind of projector stationary type fluorescent powder wheel system |
| CN107656414A (en) * | 2017-11-16 | 2018-02-02 | 四川长虹电器股份有限公司 | A kind of micro- projecting optical engine system of transmission-type single shaft two-wheel laser |
| CN108666405A (en) * | 2017-03-27 | 2018-10-16 | 广州市新晶瓷材料科技有限公司 | A kind of laser white light devices and its implementation |
| CN108730922A (en) * | 2017-04-14 | 2018-11-02 | 广州市新晶瓷材料科技有限公司 | A kind of generating device of laser and its implementation |
| WO2018214593A1 (en) * | 2017-05-24 | 2018-11-29 | 深圳市光峰光电技术有限公司 | Wavelength conversion device |
| CN109282246A (en) * | 2018-11-01 | 2019-01-29 | 苏州晶清光电科技有限公司 | A kind of Wavelength converter, light source module group and headlamp |
| CN109860408A (en) * | 2019-03-01 | 2019-06-07 | 苏州深光光电科技有限公司 | Luminescence generated by light glass display system and its display methods |
| CN109889801A (en) * | 2017-12-06 | 2019-06-14 | 深圳光峰科技股份有限公司 | Projection device and method for displaying projection |
| CN110190174A (en) * | 2019-06-01 | 2019-08-30 | 英锐科技(深圳)有限公司 | A kind of blue violet light LED fluorescent film |
| CN110204218A (en) * | 2019-05-15 | 2019-09-06 | 苏州深光光电科技有限公司 | Luminescence generated by light surface layer body |
| CN111033366A (en) * | 2017-08-17 | 2020-04-17 | 索尼公司 | Light source device and projection display device |
| CN111936786A (en) * | 2018-04-12 | 2020-11-13 | 松下知识产权经营株式会社 | Lighting device |
| CN114413194A (en) * | 2022-01-27 | 2022-04-29 | 上海度淳科技有限公司 | Light-emitting component with strong smoke penetration and firefighter lighting lamp |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666405A (en) * | 2017-03-27 | 2018-10-16 | 广州市新晶瓷材料科技有限公司 | A kind of laser white light devices and its implementation |
| CN106908995A (en) * | 2017-03-29 | 2017-06-30 | 深圳市国显科技有限公司 | A kind of field sequence LCD device and projecting apparatus of use quanta point material |
| CN106918544A (en) * | 2017-03-29 | 2017-07-04 | 中国科学院苏州生物医学工程技术研究所 | A kind of flow cytometer showed instrument system based on fluorescence excitation light source |
| CN108730922B (en) * | 2017-04-14 | 2024-03-19 | 广东中晶激光照明技术有限公司 | Laser generating device and implementation method thereof |
| CN108730922A (en) * | 2017-04-14 | 2018-11-02 | 广州市新晶瓷材料科技有限公司 | A kind of generating device of laser and its implementation |
| WO2018214593A1 (en) * | 2017-05-24 | 2018-11-29 | 深圳市光峰光电技术有限公司 | Wavelength conversion device |
| CN107272186A (en) * | 2017-06-27 | 2017-10-20 | 湖北久之洋信息科技有限公司 | A kind of projector stationary type fluorescent powder wheel system |
| CN107272186B (en) * | 2017-06-27 | 2020-07-28 | 湖北久之洋信息科技有限公司 | Fixed fluorescent powder wheel system for projector |
| CN111033366A (en) * | 2017-08-17 | 2020-04-17 | 索尼公司 | Light source device and projection display device |
| CN107656414A (en) * | 2017-11-16 | 2018-02-02 | 四川长虹电器股份有限公司 | A kind of micro- projecting optical engine system of transmission-type single shaft two-wheel laser |
| CN109889801A (en) * | 2017-12-06 | 2019-06-14 | 深圳光峰科技股份有限公司 | Projection device and method for displaying projection |
| CN111936786A (en) * | 2018-04-12 | 2020-11-13 | 松下知识产权经营株式会社 | Lighting device |
| CN109282246A (en) * | 2018-11-01 | 2019-01-29 | 苏州晶清光电科技有限公司 | A kind of Wavelength converter, light source module group and headlamp |
| CN109860408A (en) * | 2019-03-01 | 2019-06-07 | 苏州深光光电科技有限公司 | Luminescence generated by light glass display system and its display methods |
| CN110204218A (en) * | 2019-05-15 | 2019-09-06 | 苏州深光光电科技有限公司 | Luminescence generated by light surface layer body |
| CN110204218B (en) * | 2019-05-15 | 2022-06-10 | 苏州科光光电科技有限公司 | Photoinduced luminous surface layer body |
| CN110190174A (en) * | 2019-06-01 | 2019-08-30 | 英锐科技(深圳)有限公司 | A kind of blue violet light LED fluorescent film |
| CN114413194A (en) * | 2022-01-27 | 2022-04-29 | 上海度淳科技有限公司 | Light-emitting component with strong smoke penetration and firefighter lighting lamp |
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Application publication date: 20170111 |