CN105549312A - Fluorescent wheel and fluorescent conversion system - Google Patents
Fluorescent wheel and fluorescent conversion system Download PDFInfo
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- CN105549312A CN105549312A CN201610103299.2A CN201610103299A CN105549312A CN 105549312 A CN105549312 A CN 105549312A CN 201610103299 A CN201610103299 A CN 201610103299A CN 105549312 A CN105549312 A CN 105549312A
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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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- 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
- G03B21/208—Homogenising, shaping of the illumination light
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Abstract
The embodiment of the invention discloses a fluorescent wheel for receiving irradiation of a laser. The fluorescent wheel comprises a fluorescent powder region and a laser diffusion region located on a reflection base plate; the fluorescent powder region is used for emitting a fluorescent light under the excitation of an incident laser and reflecting out; the laser diffusion region is used for diffusing the incident laser and reflecting out. The invention also discloses a fluorescent conversion system. The fluorescent light and the laser emitted by the fluorescent wheel along the front face of the fluorescent wheel can be collected by a same light collection device; the fluorescent conversion system is simplified; the integrated size is reduced; the fluorescent conversion system is minimized; and laser diffusion region can carry out certain dispersion spot to the laser beams.
Description
Technical field
The present invention relates to body fluorescence conversion technology field, particularly relate to a kind of fluorescent wheel and fluorescence converting system.
Background technology
At present, laser is due to high brightness, high colour gamut, the advantages such as the life-span is long are applied to light source field gradually, in the LASER Light Source of current application, general employing LASER Light Source provides the light of one or both colors in three primary colours, and the mode that the mode of LASER Light Source fluorescence excitation wheel produces the light of other colors in three primary colours is thrown light on.
In prior art, a kind of structure of fluorescent wheel 2 as shown in Figure 1, comprises mirror-surface aluminum base board 20, aluminium base excircle comprises fluorescent powder district 21, transmission area 22.Wherein fluorescent powder district 21 is provided with the fluorescent powder of at least one color, and the conversion that excites for the light source that is stimulated forms the fluorescence of respective color, and fluorescence, by aluminium base surface reflection, penetrates from fluorescent wheel 2 front.Transmission area 22 is generally clear glass, allow excitation source light beam through, penetrate from fluorescent wheel 2 back side.
Fig. 2 show in a kind of prior art apply above-mentioned Fig. 1 fluorescent wheel fluorescence converting system, this fluorescence converting system comprises: excitation source 11, be positioned at the convergent lens group 12 on excitation source 11 light direction, be positioned at convergent lens group 12 light direction and become the conjunction light unit 13(of miter angle with light direction as dichroic mirror), be positioned at the fluorescent wheel 2 closing light unit 13 light direction, lay respectively at the first collimation lens set 15 of fluorescent wheel 2 front and back, second collimation lens set 16, be positioned at and close light unit 13 side, and perpendicular to the filter wheel 17 on the light direction of excitation source 11, convergent lens 18 between filter wheel 17 and conjunction light unit 13, be positioned at the relaying loop 19 around fluorescent wheel 14.
Wherein, the relaying loop 19 shown in Fig. 2 is made up of diffusion sheet, multiple catoptron and convex lens.
Wherein, excitation source 11 is for Emission Lasers.
Wherein, fluorescent wheel 2 is the reflective fluorescent wheel shown in Fig. 1, there is mirror-surface aluminum base board, can reflect the fluorescence of fluorescent powder generation under the exciting of laser, make fluorescence from the outgoing of fluorescent wheel front, and after the collimation of the first collimation lens set 15 becomes approximately parallel light beam, incide conjunction light unit 13.The laser that the laser-transmitting district of fluorescent wheel 2 makes excitation source 11 send is from the back side outgoing of fluorescent wheel 14, and through relaying loop 19, finally incide and close light unit 13 place, carry out conjunction light output with fluorescence, light beam, through convergent lens 18, is finally incident to filter wheel 17 and carries out colour filter.
Be respectively arranged with in above-mentioned fluorescence converting system of the prior art and carry out corresponding collimation and convergence, light path converting parts (as above-mentioned relaying loop) etc. for fluorescence and laser, complex structure, size is larger.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of fluorescent wheel and fluorescence converting system, complicated for solving existing fluorescence conversion system structure, larger-size problem.
The object of the embodiment of the present invention is achieved through the following technical solutions:
A kind of fluorescent wheel, for accepting the irradiation of laser, comprising and being positioned at fluorescent powder district on reflection substrate and laser diffusion region; Wherein: fluorescent powder district, for sending fluorescence and reflect away under the exciting of incident laser; Laser diffusion region, for spreading incident laser and reflecting away.
Preferably, laser diffusion region comprises the diffusion sheet be arranged on reflection substrate,
Diffusion sheet is formed doped with scattering particle in diffusion barrier material;
Or preferably, laser diffusion region comprises the grain coating be arranged to laser diffusion on reflection substrate;
Grain coating can spread single band scope laser, or, can spread full band range light;
Preferably, laser is blue laser, and fluorescent powder district comprises green emitting phosphor district, Ju Se fluorescent powder district and yellow fluorescent powder district; Or fluorescent powder district comprises green emitting phosphor district and Ju Se fluorescent powder district.
Preferably, laser comprises blue laser and red laser;
Fluorescent powder district comprises green emitting phosphor district, and yellow fluorescent powder district; Or fluorescent powder district comprises green emitting phosphor district.
Technical solution of the present invention embodiment at least has following beneficial effect:
In the fluorescent wheel that the embodiment of the present invention provides, because the fluorescence sent under the exciting of incident laser in incident laser and fluorescent wheel can all be reflected by fluorescent wheel, that is, fluorescent wheel can all from fluorescent wheel front outgoing fluorescence and laser, be convenient to the collection of light like this, if such fluorescent wheel is applied in fluorescence converting system, directly the fluorescence penetrated from fluorescent wheel and laser can be collected, corresponding collimation and convergence is carried out for fluorescence and laser respectively with above-mentioned prior art, the design of light path converting parts is compared, simplify the structure of fluorescence converting system, be conducive to the reduction of overall dimensions, the miniaturization of fluorescence converting system can be realized.
In addition, by arranging laser diffusion region on fluorescent wheel, can spread before to laser reflection, can spread before to laser reflection, change laser beam divergent angle degree, can degree of coherence be reduced, play certain dissipation spot effect.
And technical solution of the present invention additionally provides a kind of fluorescence converting system, for accepting the irradiation of laser and sending fluorescence, comprise excitation source, fluorescent wheel and light collecting device; Wherein:
Fluorescent wheel, for accepting the irradiation of laser that excitation source is launched, comprising and being positioned at fluorescent powder district on reflection substrate and laser diffusion region; Wherein: fluorescent powder district, for sending fluorescence and reflect away under the exciting of incident laser; Laser diffusion region, for spreading incident laser and reflecting away;
Light collecting device, for receiving mixing injection after fluorescence and laser that fluorescent wheel reflects.
Preferably, light collecting device comprises light harvesting parts and even smooth parts; Wherein:
Light harvesting parts, for collecting laser and the fluorescence of fluorescent wheel injection;
Even smooth parts, mix rear injection for the laser collected by light harvesting parts and fluorescence.
Preferably, light harvesting parts are the reflecting curved surface with light hole; Wherein, the light hole of reflecting curved surface, for through the laser being incident to fluorescent wheel.
Preferably, reflecting curved surface is ellipsoid reflecting surface;
Even smooth parts and fluorescent wheel lay respectively in two focuses of ellipsoid reflecting surface.
Preferably, also comprise filter wheel, fluorescent wheel and filter wheel are coaxially arranged;
Filter wheel, comprises fluorescence filter area and laser-transmitting district; Wherein, fluorescence filter area is used for filtering to the fluorescence of light collecting device injection; Laser-transmitting district is used for the laser through light collecting device injection.
Technical solution of the present invention embodiment at least has following beneficial effect:
In the fluorescence converting system that the embodiment of the present invention provides, comprise excitation source, fluorescent wheel and light collecting device, wherein, the laser that excitation source is launched is incident to fluorescent wheel, in the incident laser received due to fluorescent wheel and fluorescent wheel, the fluorescence that sends under the exciting of incident laser is all reflected, that is, fluorescent wheel can all from fluorescent wheel front outgoing fluorescence and laser, same light collecting device is utilized just can directly to collect the fluorescence penetrated from fluorescent wheel and laser like this, corresponding collimation and convergence is carried out for fluorescence and laser respectively with above-mentioned prior art, the design of light path converting parts is compared, simplify the structure of fluorescence converting system, be conducive to the reduction of overall dimensions, the miniaturization of fluorescence converting system can be realized.
In addition, by arranging laser diffusion region on fluorescent wheel, can spread before to laser reflection, changing laser beam divergent angle degree, can degree of coherence be reduced, play certain dissipation spot effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of fluorescent wheel in prior art;
Fig. 2 is the structural representation of a kind of fluorescence converting system in prior art;
The planar structure schematic diagram of a kind of fluorescent wheel that Fig. 3 A provides for the embodiment of the present invention;
The cross-sectional view of a kind of fluorescent wheel that Fig. 3 B position embodiment of the present invention provides;
One of structural representation of a kind of fluorescence converting system that Fig. 4 provides for the embodiment of the present invention;
The structural representation two of a kind of fluorescence converting system that Fig. 5 provides for the embodiment of the present invention;
The structural representation three of a kind of fluorescence converting system that Fig. 6 provides for the embodiment of the present invention;
The schematic top plan view of a kind of filter wheel that Fig. 7 provides for the embodiment of the present invention;
Schematic top plan view when a kind of fluorescent wheel that Fig. 8 provides for the embodiment of the present invention and filter wheel are coaxially arranged;
Schematic top plan view when the another kind of fluorescent wheel that Fig. 9 provides for the embodiment of the present invention and filter wheel are coaxially arranged.
Embodiment
In order to solve the complex structure of existing fluorescence converting system, larger-size problem, realizes the miniaturization of fluorescence converting system, embodiments provides a kind of fluorescent wheel, for accepting the irradiation of laser, comprising and being positioned at fluorescent powder district on reflection substrate and laser diffusion region; Wherein: fluorescent powder district, for sending fluorescence and reflect away under the exciting of incident laser; Laser diffusion region, for spreading incident laser and reflecting away.Based on same inventive concept, the embodiment of the present invention additionally provides a kind of fluorescence converting system, for accepting the irradiation of laser and sending fluorescence, comprises excitation source, fluorescent wheel and light collecting device; Wherein: fluorescent wheel, for accepting the irradiation of laser that excitation source is launched, comprising and being positioned at fluorescent powder district on reflection substrate and laser diffusion region; Wherein: fluorescent powder district, for sending fluorescence and reflect away under the exciting of incident laser; Laser diffusion region, for spreading incident laser and reflecting away; Light collecting device, for receiving mixing injection after fluorescence and laser that fluorescent wheel reflects.The fluorescent wheel that the embodiment of the present invention provides and fluorescence converting system, achieve the miniaturization of fluorescence converting system.
Below in conjunction with drawings and Examples, a kind of fluorescent wheel provided by the invention and fluorescence converting system are illustrated in greater detail.
Embodiment one
As shown in Figure 3A, the embodiment of the present invention provides a kind of fluorescent wheel 2, for accepting the irradiation of laser, comprising and being positioned at fluorescent powder district 21 on reflection substrate 20 and laser diffusion region 22; Wherein: fluorescent powder district 21, for sending fluorescence and reflect away under the exciting of incident laser; Laser diffusion region 22, for spreading incident laser and reflecting away;
Wherein, reflection substrate refers to the substrate with reflecting surface, can to laser and fluorescence, and the light namely in full band range all reflects, particularly, and the mirror-surface aluminum base board that can be formed for time processing, or, substrate material adds metal-coated membrane.
Wherein, the fluorescence that fluorescent powder district 21 produces is dispersed to all directions, and the fluorescence of the surface divergence of relative reflection substrate is reflected, then all fluorescence is along the exiting angle range of about 180 degree from the outgoing of fluorescent wheel light emission side.
Laser diffusion region 22 comprises the diffusion sheet be arranged on reflection substrate, diffusion sheet is for be formed doped with scattering particle in diffusion barrier material, thus laser before inciding the reflection substrate surface of fluorescent wheel also through the diffusion of diffusion sheet, and again through diffusion after reflection substrate surface reflection, various dispersion angle can be formed to laser beam, reduce the degree of coherence of laser beam, there is certain dissipation spot effect.
And laser diffusion region 22 can also be arranged at the grain coating to laser diffusion on reflection substrate 20.This grain coating both can be the grain coating laser of specific wavelength to diffusion, also can be grain coating all band to diffusion, can also be the grain coating a certain scope wave band to diffusion.
In enforcement, above-mentioned grain coating can be, but not limited to be barium sulfate particle coating.Barium sulfate particle coating can have higher diffusion to the laser of a certain scope wave band.
As shown in Figure 3 B, the diffusion sheet of laser diffusion region 22 or granule proliferation coating 22 ' are arranged on reflection substrate 20, and laser beam reenters the surface being mapped to reflection substrate 20 after the diffusion of diffusion sheet or granule proliferation coating 22 '.
Fluorescent powder district 21 comprises in phosphor powder layer 21 ', Fig. 3 B a kind of situation that illustrate only phosphor powder layer coating, and phosphor powder layer only can be coated in the outer circumferential area of reflection substrate, also can be sector region.
In implementing one, incident laser can be monochromatic (as blueness) laser, excites multicolor fluorescence by this one-wavelength laser; Incident laser also can be double-colored (as red and blue) laser, excites multicolor fluorescence by this two-color laser.Accordingly, according to the color of incident laser, need to arrange accordingly fluorescent wheel.
If laser is blue laser; Fluorescent powder district comprises green emitting phosphor district, Ju Se fluorescent powder district and yellow fluorescent powder district; Or fluorescent powder district comprises green emitting phosphor district and Ju Se fluorescent powder district.
If laser comprises blue laser and red laser; Fluorescent powder district comprises green emitting phosphor district, and yellow fluorescent powder district; Or fluorescent powder district comprises green emitting phosphor district.
Preferably, reflection substrate is mirror-surface aluminum base board, or is coated with the substrate of aluminium film.Such reflection substrate all has high retroaction to the light of each wavelength.
In the embodiment of the present invention, because the fluorescence sent under the exciting of incident laser in incident laser and fluorescent wheel can all be reflected by fluorescent wheel, that is, fluorescent wheel can all from fluorescent wheel front outgoing fluorescence and laser, be convenient to the collection of light like this, if such fluorescent wheel is applied in fluorescence converting system, directly the fluorescence penetrated from fluorescent wheel and laser can be collected, corresponding collimation and convergence is carried out for fluorescence and laser respectively with above-mentioned prior art, the design of light path converting parts is compared, simplify the structure of fluorescence converting system, be conducive to the reduction of overall dimensions, the miniaturization of fluorescence converting system can be realized.
In addition, by arranging laser diffusion region on fluorescent wheel, can spread before to laser reflection, thus change the dispersion angle of laser, reduce degree of coherence, the dissipation spot effect of laser can be improved.And, compared to arranging, scattering is carried out with dissipation spot to laser to the scattering coating granule of laser organizator scattering, in embodiment of the present invention scheme, by adopting diffusion sheet or granule proliferation coating, greatly can reduce the light losing that laser causes owing to producing volume scattering in scattering coating, thus cause the problem that outgoing beam brightness reduces greatly, such as, the grain coating of condition of equivalent thickness, the laser beam brightness producing volume scattering can reduce more than at least 40%, although therefore carried out dissipation spot to laser, but to sacrifice premised on laser beam brightness, and embodiment of the present invention scheme, can take into account while laser beam dissipation spot, reduce the luminance loss to laser, there is higher actual application value.
Embodiment two
The embodiment of the present invention provides a kind of fluorescence converting system, as shown in Figure 4, comprises excitation source 3, fluorescent wheel 2 and light collecting device 4; Wherein:
Fluorescent wheel 2, for accepting the irradiation of laser that excitation source is launched, comprising and being positioned at fluorescent powder district 21 on reflection substrate 20 and laser diffusion region 22; Wherein: fluorescent powder district, for sending fluorescence and reflect away under the exciting of incident laser; Laser diffusion region, for spreading incident laser and reflecting away; Fluorescent wheel 2 in the embodiment of the present invention can adopt the fluorescent wheel of example shown in embodiment one.
Light collecting device 4, for receiving mixing injection after fluorescence and laser that fluorescent wheel 2 reflects.
In the embodiment of the present invention, fluorescence converting system comprises excitation source, fluorescent wheel and light collecting device, wherein, the laser that excitation source is launched is incident to fluorescent wheel, in the incident laser received due to fluorescent wheel and fluorescent wheel, the fluorescence that sends under the exciting of incident laser is all reflected, that is, fluorescent wheel can all from fluorescent wheel front outgoing fluorescence and laser, same light collecting device is utilized just can directly the fluorescence penetrated from fluorescent wheel and laser to be collected like this, corresponding collimation and convergence is carried out for fluorescence and laser respectively with above-mentioned prior art, the design of light path converting parts is compared, simplify the structure of fluorescence converting system, be conducive to the reduction of overall dimensions, the miniaturization of fluorescence converting system can be realized.In addition, by arranging laser diffusion region on fluorescent wheel, thus changing the dispersion angle of laser, reducing degree of coherence, the dissipation spot effect of laser can be improved.And, compared to arranging, scattering is carried out with dissipation spot to laser to the scattering coating granule of laser organizator scattering, in embodiment of the present invention scheme, by adopting diffusion sheet or granule proliferation coating, greatly can reduce the light losing that laser causes owing to producing volume scattering in scattering coating, thus cause the problem that outgoing beam brightness reduces greatly, such as, the grain coating of condition of equivalent thickness, the laser beam brightness producing volume scattering can reduce more than at least 40%, although therefore carried out dissipation spot to laser, but to sacrifice premised on laser beam brightness, and embodiment of the present invention scheme, can take into account while laser beam dissipation spot, reduce the luminance loss to laser, there is higher actual application value.
Preferably, as shown in Figure 4, light collecting device 4 comprises light harvesting parts 41 and even smooth parts 42; Wherein:
Light harvesting parts 41, for collecting laser and the fluorescence of fluorescent wheel injection;
Even smooth parts 42, mix rear injection for the laser collected by light harvesting parts and fluorescence.
Preferably, as shown in Figure 5, light harvesting parts 41 are for having the reflecting curved surface of light hole 41a; Wherein, the light hole of reflecting curved surface, for through the laser being incident to fluorescent wheel.
In the light collecting device 4 of the present embodiment, reflecting curved surface can play converging action to the light of all angles, and then can improve the efficiency of collecting light.Further, the laser being incident to fluorescent wheel can be directly incident by the light hole on reflecting curved surface, and without the need to other light path converting parts, the volume that takes up room is little, further simplify the structure of fluorescence converting system, is beneficial to the miniaturization of fluorescence converting system.
In enforcement, reflecting curved surface can be, but not limited to as ellipsoid reflecting surface; Even smooth parts 42 and fluorescent wheel 42 lay respectively in two focuses of ellipsoid reflecting surface.
The feature of ellipsoid reflecting surface is: the light that any one focus sends or the light by this focus, all can gather to another focus after ellipsoid reflective surface, in the present embodiment, utilize this feature, fluorescent wheel and even smooth parts lay respectively in two focuses of ellipsoid reflecting surface, make fluorescence or the laser of the fluorescent wheel outgoing being arranged in a focus, through this ellipsoid reflective surface post-concentration to another focus, i.e. even smooth parts place, substantially increases the efficiency of collecting light.
Consider that fluorescence is 180 degree and disperses, in order to better collect the light of all angles sent from fluorescent wheel surface, preferably, reflecting curved surface is semielliptical reflecting surface.
Preferably, even smooth parts can be, but not limited to as light cone or optical wand, the housing that can be spliced to form for solid glass body or side wall glass.
In enforcement, if even smooth parts are light cone, the light inlet of light cone is less than the light-emitting window of light cone.
As shown in Figure 5, the light inlet of light cone is less than the light-emitting window of light cone, and according to optical extend invariance principle, the light beam penetrated from the light-emitting window of light cone can also by compression dispersion angle.
In enforcement, the embodiment that fluorescent wheel is relevant see embodiment one, can repeat no more herein.
Embodiment three
The fluorescence converting system that the present embodiment provides, as shown in Figure 6, except excitation source 3, fluorescent wheel 2 and light collecting device 4, fluorescence converting system also comprises filter wheel 5;
Filter wheel 5, as shown in Figure 7, comprises fluorescence filter area 51 and laser-transmitting district 52; Wherein fluorescence filter area is used for filtering to the fluorescence of light collecting device injection; Laser-transmitting district is used for the laser through light collecting device injection.
In the present embodiment, the fluorescence of colour wheel and laser after filtration, the i.e. final light source needed.
In enforcement, as shown in Figure 5, fluorescent wheel 2 and filter wheel 5 can coaxially be arranged.Like this, can control fluorescent wheel and filter wheel, control mode is simple simultaneously, and the light being simultaneously also convenient to collect from light collecting device 4 enters filter wheel 5 with light path short as far as possible and carries out colour filter.
In enforcement, the circumferential area of filter wheel can be greater than the circumferential area of fluorescent wheel.All can receive the light beam with certain dispersion angle from light collecting device outgoing like this.
Below respectively for one-wavelength laser and two-color laser fluorescence excitation, the fluorescent wheel provide the embodiment of the present invention and fluorescence converting system illustrate in further detail.
Embodiment four
In the present embodiment, laser is blue laser light source, based on the fluorescence converting system shown in Fig. 6, comprise excitation source 3, be positioned at the fluorescent wheel 2 of the light emission side of excitation source 3, be positioned at the light collecting device 4 of the light emission side of fluorescent wheel 2, and be positioned at the filter wheel 5 of light emission side of light collecting device 4.
Wherein, light collecting device 4 comprises light harvesting parts 41 and even smooth parts 42.Light harvesting parts 41 are for having the semielliptical reflecting surface of light hole, and even smooth parts 42 are for having the light cone of light inlet and light-emitting window; The light inlet of light cone and fluorescent wheel lay respectively in two focuses of semielliptical reflecting surface; Further, the light inlet of light cone is less than the light-emitting window of light cone.
Wherein, fluorescent wheel 2 comprises and is positioned at fluorescent powder district in mirror-surface aluminum base board and laser diffusion region, and is evenly distributed on excircle; Laser diffusion region, exemplified by embodiment one, can be diffusion sheet or the grain coating to laser diffusion.Filter wheel 5, comprises fluorescence filter area and laser-transmitting district, and is evenly distributed on excircle.The vertical view to fluorescent wheel and filter wheel as shown in Figure 8: fluorescent powder district comprises green emitting phosphor district 21a, Ju Se fluorescent powder district 21b and yellow fluorescent powder district 21c; Fluorescence filter area comprises green color filter 51a, Red lightscreening plate 51b and yellow filter 51c; Wherein, fluorescent wheel and filter wheel are coaxially arranged, corresponding: green emitting phosphor district 21a is corresponding with green color filter 51a to be arranged; Ju Se fluorescent powder district 21b is corresponding with Red lightscreening plate 51b to be arranged; Yellow fluorescent powder district 21c is corresponding with yellow filter 51c to be arranged; Laser diffusion region 22 is corresponding with laser-transmitting district 52 to be arranged.
Wherein, yellow filter and laser-transmitting district can be clear glass.
Based on above fluorescence converting system, excitation source Emission Lasers is also irradiated on fluorescent wheel, fluorescent wheel and filter wheel synchronous rotary, along with the rotation of fluorescent wheel, incident laser in a period of time internal radiation to fluorescent powder district, excitated fluorescent powder produces fluorescence (comprising green, tangerine look, yellow fluorescence) and reflects away, and a period of time internal radiation is to laser diffusion region again, is spread and reflect away by laser diffusion region.Semielliptical reflecting surface receives the fluorescence of fluorescent wheel injection and laser back reflection to the light inlet of light cone, light cone by after mixing from the fluorescence of semielliptical reflective surface and laser from the light-emitting window injection of light cone to filter wheel.In filter wheel, green color filter filters and obtains green glow, and Red lightscreening plate filters and obtains ruddiness from tangerine look fluorescence, and yellow filter filters and obtains gold-tinted, and laser-transmitting district is through blue light.Thus, from filter wheel injection is green glow, ruddiness, blue light and gold-tinted four primary, is conducive to improving colour gamut.
Embodiment five
In the present embodiment, laser comprises blue laser and red laser; On the basis of the fluorescence converting system of embodiment four, fluorescent wheel and filter wheel are improved, the vertical view to fluorescent wheel and filter wheel as shown in Figure 9: fluorescent powder district comprises green emitting phosphor district 21a, and yellow fluorescent powder district 21c; Fluorescence filter area comprises green color filter 51a and yellow filter 51c; Fluorescent wheel and filter wheel are coaxially arranged, corresponding: green emitting phosphor district 21a is corresponding with green color filter 51a to be arranged; Yellow fluorescent powder district 21c is corresponding with yellow filter 51c to be arranged; Laser diffusion region 22 is corresponding with laser-transmitting district 52 to be arranged.
In the present embodiment, suitably can increase the section of laser diffusion region, and the section in laser-transmitting district.Further, in laser diffusion region, the different grain coating for blue laser and red laser can be set respectively, also can same grain coating be only set.The setting of laser diffusion region, when this two-color laser, for the coherence reducing laser, the dissipation spot eliminating laser is particularly evident.
Based on above fluorescence converting system, the synchronous rotary of fluorescent wheel and filter wheel, when fluorescent wheel rotates within the scope of fluorescent powder section and blue laser diffusion region, incident blue laser, when fluorescent wheel rotates to red laser diffusion region, incident red laser.Finally, from filter wheel injection is also green glow, ruddiness, blue light and gold-tinted four primary, is conducive to improving colour gamut.
It should be noted that, in embodiment four and embodiment five, also can not yellow fluorescent powder be set, only exports green, redness and blue three primary colours.
To sum up, in one or more embodiment, it is no matter the fluorescence converting system of monochromatic laser light source, or the fluorescence converting system of two-color laser light source, the laser that excitation source is launched is incident to fluorescent wheel, in the incident laser received due to fluorescent wheel and fluorescent wheel, the fluorescence that sends under the exciting of incident laser is all reflected, thus fluorescent wheel can all from fluorescent wheel front outgoing fluorescence and laser, same light collecting device is utilized just can directly the fluorescence penetrated from fluorescent wheel and laser to be collected like this, corresponding collimation and convergence is carried out for fluorescence and laser respectively with above-mentioned prior art, the design of light path converting parts is compared, simplify the structure of fluorescence converting system, be conducive to the reduction of overall dimensions, the miniaturization of fluorescence converting system can be realized.In addition, by arranging laser diffusion region on fluorescent wheel, thus changing the dispersion angle of one or both laser, reducing degree of coherence, the dissipation spot effect of laser can be improved.And, compared to arranging, scattering is carried out with dissipation spot to laser to the scattering coating granule of laser organizator scattering, in embodiment of the present invention scheme, by adopting diffusion sheet or granule proliferation coating, greatly can reduce the light losing that laser causes owing to producing volume scattering in scattering coating, thus cause the problem that outgoing beam brightness reduces greatly, such as, the grain coating of condition of equivalent thickness, the laser beam brightness producing volume scattering can reduce more than at least 40%, although therefore carried out dissipation spot to laser, but to sacrifice premised on laser beam brightness, and embodiment of the present invention scheme, can take into account while laser beam dissipation spot, reduce the luminance loss to laser, there is higher actual application value.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a fluorescent wheel, for accepting the irradiation of laser, is characterized in that, comprises and is positioned at fluorescent powder district on reflection substrate and laser diffusion region; Wherein: described fluorescent powder district, for sending fluorescence and reflect away under the exciting of incident laser; Described laser diffusion region, for spreading incident laser and reflecting away.
2. fluorescent wheel according to claim 1, is characterized in that, described laser diffusion region comprises the diffusion sheet be arranged on described reflection substrate.
3. fluorescent wheel according to claim 1, is characterized in that, described laser diffusion region comprises and being arranged on described reflection substrate the grain coating that laser spreads.
4. fluorescent wheel according to claim 2, is characterized in that, described diffusion sheet is formed doped with scattering particle in diffusion barrier material.
5. fluorescent wheel according to claim 3, is characterized in that, described grain coating can spread single band scope laser, or,
Can spread full band range light.
6. fluorescent wheel according to claim 1, is characterized in that, described laser is blue laser;
Described fluorescent powder district comprises green emitting phosphor district, Ju Se fluorescent powder district and yellow fluorescent powder district; Or described fluorescent powder district comprises green emitting phosphor district and Ju Se fluorescent powder district.
7. fluorescent wheel according to claim 1, is characterized in that, described laser comprises blue laser and red laser;
Described fluorescent powder district comprises green emitting phosphor district, and yellow fluorescent powder district; Or described fluorescent powder district comprises green emitting phosphor district.
8. a fluorescence converting system, for accepting the irradiation of laser and sending fluorescence, is characterized in that, comprises excitation source, fluorescent wheel and light collecting device; Wherein:
Described fluorescent wheel, for accepting the irradiation of laser that excitation source is launched, comprising and being positioned at fluorescent powder district on reflection substrate and laser diffusion region; Wherein: described fluorescent powder district, for sending fluorescence and reflect away under the exciting of incident laser; Described laser diffusion region, for spreading incident laser and reflecting away;
Described light collecting device, for receiving mixing injection after fluorescence and laser that described fluorescent wheel reflects.
9. system according to claim 8, is characterized in that, described light collecting device comprises light harvesting parts and even smooth parts; Wherein:
Described light harvesting parts, for collecting laser and the fluorescence of the injection of described fluorescent wheel;
Described even smooth parts, for mixing rear injection by the laser of described light harvesting parts collection and fluorescence.
10. system according to claim 8, is characterized in that, described light harvesting parts are the reflecting curved surface with light hole; Wherein, the light hole of described reflecting curved surface, for through the laser being incident to fluorescent wheel.
11. systems according to claim 10, is characterized in that, described reflecting curved surface is ellipsoid reflecting surface;
Described even smooth parts and described fluorescent wheel lay respectively in two focuses of described ellipsoid reflecting surface.
System described in 12. according to Claim 8 ~ 11 any one, is characterized in that, also comprise filter wheel;
Described filter wheel, and described fluorescent wheel is coaxially arranged,
Described filter wheel comprises fluorescence filter area and laser-transmitting district; Wherein, described fluorescence filter area is used for filtering to the fluorescence that described light collecting device penetrates; Described laser-transmitting district is used for the laser penetrated through described light collecting device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610103299.2A CN105549312A (en) | 2016-02-25 | 2016-02-25 | Fluorescent wheel and fluorescent conversion system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610103299.2A CN105549312A (en) | 2016-02-25 | 2016-02-25 | Fluorescent wheel and fluorescent conversion system |
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| CN105549312A true CN105549312A (en) | 2016-05-04 |
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| CN201610103299.2A Pending CN105549312A (en) | 2016-02-25 | 2016-02-25 | Fluorescent wheel and fluorescent conversion system |
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| 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 |
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| WO2018010486A1 (en) * | 2016-07-13 | 2018-01-18 | 深圳市绎立锐光科技开发有限公司 | Light source structure and projection system |
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| CN109491187A (en) * | 2017-09-13 | 2019-03-19 | 深圳光峰科技股份有限公司 | Wavelength converter, light-source system and projection device |
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| WO2021051226A1 (en) * | 2019-09-16 | 2021-03-25 | Materion Precision Optics (Shanghai) Limited | Reflective diffuser for reducing laser speckle and reflective luminescent wheel including same |
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| CN110083000A (en) * | 2018-01-26 | 2019-08-02 | 中强光电股份有限公司 | Lighting system and projection arrangement |
| CN111077720A (en) * | 2018-10-18 | 2020-04-28 | 深圳光峰科技股份有限公司 | Light source system and display device |
| CN111077720B (en) * | 2018-10-18 | 2022-05-13 | 深圳光峰科技股份有限公司 | Light source system and display device |
| CN111624839A (en) * | 2019-02-28 | 2020-09-04 | 青岛海信激光显示股份有限公司 | Laser projection television and laser projection light source thereof |
| WO2021051226A1 (en) * | 2019-09-16 | 2021-03-25 | Materion Precision Optics (Shanghai) Limited | Reflective diffuser for reducing laser speckle and reflective luminescent wheel including same |
| CN114730071A (en) * | 2019-09-16 | 2022-07-08 | 美题隆精密光学（上海）有限公司 | Reflective diffuser for reducing laser speckle and reflective luminescent wheel including the same |
| WO2021259284A1 (en) * | 2020-06-22 | 2021-12-30 | 青岛海信激光显示股份有限公司 | Projection light source, and projector |
| US11768428B2 (en) | 2020-06-22 | 2023-09-26 | Hisense Laser Display Co., Ltd | Laser source and laser projection apparatus |
| US12117719B2 (en) | 2020-06-22 | 2024-10-15 | Hisense Laser Display Co., Ltd | Laser projection apparatus |
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| CN114024189A (en) * | 2021-11-18 | 2022-02-08 | 深圳立仪科技有限公司 | Laser excitation broadband linear structure light source |
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