CN106597786B - A kind of fluorescent wheel and two-color laser light source - Google Patents
A kind of fluorescent wheel and two-color laser light source Download PDFInfo
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- CN106597786B CN106597786B CN201510658098.4A CN201510658098A CN106597786B CN 106597786 B CN106597786 B CN 106597786B CN 201510658098 A CN201510658098 A CN 201510658098A CN 106597786 B CN106597786 B CN 106597786B
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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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
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Abstract
The invention discloses a kind of fluorescent wheels, including phosphor region and transmission area；Transmission area for transmiting first laser and second laser respectively, by being provided with diffusion layer in fluorescence wheel surface, diffusion layer is at least correspondingly arranged with transmission area, for being diffused before reaching transmission area to first laser and second laser respectively, so as to also act as the effect of dissipation spot while transmiting to laser, individual dissipation spot component is eliminated.The present invention also provides a kind of two-color laser light sources using above-mentioned fluorescent wheel, can carry out dissipation spot to two-color laser, reduce the use of optical component, reduce the optics framework complexity of two-color laser light source, and then be conducive to the miniaturization of laser projection device.
Description
Technical field
The present invention relates to laser lighting display field more particularly to a kind of fluorescent wheels and two-color laser light source.
Background technique
Laser is a kind of high brightness, high directivity, issues the light source of monochromatic coherent light beam, due to the plurality of advantages of laser,
Gradually it is used as light source applications in projection display technique field in recent years.But the speckle issue of pure laser light source is serious and cost
Height, the laser light source mixed at present with fluorescence and laser is using relatively broad.
Wherein, fluorescence is generated in a manner of LASER Excited Fluorescence powder by coating fluorescent powder on Wavelength converter
's.For example, generate three primary colours light with blue laser excitation green and red fluorescence powder, wherein green emitting phosphor and red fluorescence
Wheel is on the Wavelength converter coated in rotation, and usually fluorescence wheel construction, is sequentially output three bases according to timing by rotating
Coloured light.Or red blue two-color laser light source, it excites the green emitting phosphor on fluorescent wheel to generate green fluorescence and forms three primary colours light.
Fluorescent wheel can be divided into transmission-type and two kinds of reflection-type at present.
In transmission-type fluorescent wheel, the substrate at coating fluorescent powder position is transparent material, excites the fluorescence of generation can be with 360
Comprehensive diverging is spent, wherein the segment beam dissipated outward can be reflected by being plated in the reflectance coating of outer layer, and is passed through glimmering
Halo transparent substrate forms transmission, projects with the consistent direction of laser pumping light incident direction, outside fluorescent powder wheel as shown in Figure 1
Circumferential section schematic diagram, 3b are phosphor powder layer, are formed usually using colloid mixed fluorescent powder, pass through the layer glass of front and rear sides
3a is gripped, the inner surface plated film 3c that front glass is in contact with phosphor powder layer, for transmission laser and reflected fluorescent light, rear side
Glass is used to transmit through reflected fluorescence and be directly transmitted to the fluorescence of glass surface.
In reflection-type fluorescent wheel, as shown in Fig. 2, fluorescent powder is generally arranged at the excircle of aluminum substrate, laser excitation is glimmering
After light, a part of fluorescence can be directly with the side contrary with laser light incident by aluminum substrate mirror-reflection and a part of fluorescence
Projected to reflection, laser after transmission due to circuit design contrary with fluorescence, needing to convert by optical axis, finally with it is glimmering
Light carries out light combination.
In above two fluorescent wheel type, it is provided with laser transmission area, it is successively defeated according to the rotation timing of fluorescent wheel
Laser and fluorescence out, the laser after transmission output also need to carry out dissipation spot by dissipation spot optical path could to make as light source
With.
And the application along with red blue two-color laser, red laser improve laser light source instead of red fluorescence
Overall brightness, but the increase of laser type has been further aggravated speckle phenomena, needed to increase in optical design special
Dissipation spot component, such as optical fiber, random phase plate and accessory carry out dissipation spot light path design, to meet projection lighting light source
Quality, but which increases the volume of optics framework and complexity, and then are unfavorable for the miniaturization of laser projection device.
Summary of the invention
The present invention provides a kind of fluorescent wheel and two-color laser light source, by the setting of fluorescence wheel surface at least with transmission area
Corresponding diffusion layer, while enabling to fluorescent wheel to be sequentially output laser and fluorescence, additionally it is possible to be diffused and play to laser
Individual dissipation spot component is omitted in the effect of dissipation spot, improves the light processing efficiency of fluorescent wheel, while also solving double-colored
The technical issues of laser light source optics architecture design is complicated, light source volume is big, is unfavorable for laser projection device miniaturization.
The present invention is achieved by the following technical solutions:
A kind of fluorescent wheel, including phosphor region and transmission area；Phosphor region issues fluorescence for the excitation of stimulated light excitation light；Fluorescence
Area surface is additionally provided with plated film, and plated film is used for transmission laser excitation light, reflected fluorescent light；Wherein,
Transmission area for transmiting first laser and second laser respectively；Fluorescence wheel surface is additionally provided with diffusion layer, the expansion
Scattered layer is at least correspondingly arranged with transmission area, for being diffused before reaching transmission area to first laser and second laser respectively.
The transmission area includes first laser transmission area and second laser transmission area, and accordingly, the diffusion layer includes the
One laser diffusion region and second laser diffusion region.
Further, the dispersion angle to light of first laser diffusion region is greater than second laser diffusion region to the angle of divergence of light
Degree, wherein second laser is laser pumping light.
Further, diffusion layer and the transmission area shape are adapted, and are fixed on transmission area surface by silica gel bonding.
Further, diffusion layer is sector, and sector central angle center of circle angle corresponding with transmission area is identical, the diffusion layer
By being fixed in fan-shaped center of circle angular zone and fluorescent wheel riveting and/or dispensing.
Further, diffusion layer is also correspondingly arranged with phosphor region, wherein the region pair that diffusion layer is correspondingly arranged with phosphor region
The dispersion angle of light is less than region that diffusion layer and transmission area are correspondingly arranged to the dispersion angle of light.
Further, diffusion layer is in the form of annular discs, the diffusion layer middle section and fluorescent wheel riveting it is fixed and or
Dispensing is fixed.
Further, diffusion layer is frosted glass or diffusion sheet material.
Further, by fluorescent powder and the mixing cured formation of inorganic material, phosphor region is transparent for phosphor region.
Further, inorganic material includes ceramics, quartz or glass.
Further, transmission area is transparent glass material.
Further, diffusion layer is made up of semiconductor lithography process.
Further, diffusion layer outer surface is additionally provided with anti-reflection film.
And a kind of two-color laser light source, including blue laser and red laser, blue laser and red is issued respectively
Color laser, wherein further include any of the above-described scheme fluorescent wheel and first laser be red laser, second laser be blue swash
Light, the phosphor region of fluorescent wheel include green emitting phosphor, and laser pumping light is blue laser, and it is glimmering that excitation green emitting phosphor issues green
Light.
Technical solution of the present invention, at least have the advantages that following advantageous effects or:
The fluorescent wheel that technical solution of the present invention provides, can successively transmit fluorescence and laser, by setting in fluorescence wheel surface
Diffusion layer is set, the diffusion layer is at least corresponding with transmission area, and a part of diffusion layer as fluorescent wheel is revolved using fluorescent wheel itself
The work characteristics turned, which is equivalent to the diffusion sheet of a piece of movement, so that laser also passes through before transmiting through fluorescent wheel
Dissipation spot is played the role of in the diffusion for crossing diffusion layer, eliminates individual dissipation spot component.Technical solution of the present invention provides glimmering
Halo exports the combining of first laser, second laser and fluorescence in the same direction, with the dissipation to first laser, second laser
Spot is completed by a fluorescence wheel component, also improves the light processing efficiency of fluorescent wheel.
And the two-color laser light source that technical solution of the present invention provides, it can not only be realized using a fluorescence wheel component
The combining output of red laser, blue laser and green fluorescence in the same direction, and spread by being arranged in fluorescence wheel surface
Layer, the diffusion layer is at least corresponding with transmission area, and the work characteristics rotated using fluorescent wheel itself, the diffusion layer is equivalent to one
The diffusion sheet of piece movement plays the role of dissipation spot so that laser also passes through the diffusion of diffusion layer before transmiting through fluorescent wheel,
Individual dissipation spot component is eliminated, simplifies the design of light-source system dissipation spot optical path, and high quality can be provided for ray machine
Illumination.Due to the dissipation spot of fluorescence wheel component and the double action of combining, reduce the use of optical component in light source framework,
The optics framework complexity of two-color laser light source is reduced, and then is conducive to the miniaturization of laser projection device.
Detailed description of the invention
Fig. 1 is that fluorescent wheel transmits fluorescence light path schematic diagram in the prior art；
Fig. 2 is fluorescent wheel reflected fluorescent light light path schematic diagram in the prior art；
Fig. 3 is the fluorescent wheel plane distribution schematic diagram that the embodiment of the present invention 1 provides；
Fig. 4 A is the fluorescent wheel the schematic diagram of the section structure that the embodiment of the present invention 1 provides；
Fig. 4 B is the another fluorescent wheel the schematic diagram of the section structure that the embodiment of the present invention 1 provides；
Fig. 5 A is the diffusion layer plane distribution schematic diagram that the embodiment of the present invention 1 provides；
Fig. 5 B is the another diffusion layer plane distribution schematic diagram that the embodiment of the present invention 1 provides；
Fig. 6 is the fluorescent wheel the schematic diagram of the section structure that the embodiment of the present invention 1 provides；
Fig. 7 is the partial enlargement diagram of Fig. 6；
Fig. 8 is the diffusion layer plane distribution schematic diagram that the embodiment of the present invention 2 provides；
Fig. 9 is fluorescent flat distribution schematic diagram in the embodiment of the present invention 3；
Figure 10 is the corresponding the schematic diagram of the section structure of Fig. 9 in the embodiment of the present invention 3；
Figure 11 is fluorescent flat distribution schematic diagram in the embodiment of the present invention 4；
Figure 12 is the corresponding the schematic diagram of the section structure of Figure 11 in the embodiment of the present invention 4；
Figure 13 is two-color laser light source configuration diagram in the embodiment of the present invention 5；
Figure 14 is two-color laser light source concrete structure schematic diagram in the embodiment of the present invention 5；
Figure 15 is two-color laser light source working timing diagram in the embodiment of the present invention 5；
Figure 16 is laser beam Gaussian shaped profile schematic diagram.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
Embodiment 1
The embodiment of the present invention 1 provides a kind of fluorescent wheel, is driven and is rotated by motor, as shown in figure 3, the fluorescent wheel 3 is in
It is discoid, including phosphor region 31 and transmission area 32, since fluorescence excitation only needs lesser hot spot, fluorescence is only in fluorescent wheel circle
Phosphor region and transmission area, are usually arranged in the outer circumferential area of fluorescent wheel by the upper area distribution of disk.Phosphor region 31 is provided with glimmering
Light powder issues fluorescence for the excitation of stimulated light excitation light.Wherein, fluorescent wheel diagrammatic cross-section as shown in FIG. 6, phosphor region 31 are wrapped
Include phosphor region 311, and the film plating layer 312 positioned at 311 surface of phosphor region.Transmission area 32 is not provided with fluorescent powder, generally transparent
Glass material is constituted, and provides independent channel for the transmission for laser, so that in laser light source in fluorescent wheel rotation timing
Non-fluorescence firing time section transmitted by the position, which includes laser pumping light source, also may include that laser is non-
Motivate light source.In embodiments of the present invention, transmission area 32 is used to transmit first laser and second laser respectively, wherein second laser
For laser pumping light.For transmission area 32 generally by transparent glass material, permeable first slot is embedded in or is clamped again the mode of sheet glass
Production.Film plating layer 312 is located at outer surface, that is, laser incidence side of phosphor region 311, specifically, be a dichroic film, for compared with
High transmissivity transmission laser excitation light, and the part fluorescence towards film layer incidence by laser excitation is reflected, can specifically it join
LASER Excited Fluorescence as shown in Figure 7, and the light path schematic diagram of reflected fluorescent light, this Fig. 7 only illustrate swashing for a part of fluorescence
Hair and reflection and transmission situation.In practical applications, the diverging direction of fluorescence is multidirectional.
Wherein, it being additionally provided with diffusion layer 33 on the surface of fluorescent wheel 3, diffusion layer 33 is at least correspondingly arranged with transmission area 32,
For being diffused before reaching transmission area 32 to first laser and second laser respectively.Since transmission area 32 can be fluorescent wheel
One section of arc-shaped on disk excircle is also possible to one section of fan-shaped region being located on disc, and accordingly, diffusion layer 33 can be with
It is adapted with the shape of transmission area 32.
Specifically, one kind is achieved in that, diffusion layer 33 and transmission area are one section of arc-shaped, and is binded admittedly by silica gel
It is scheduled on 32 surface of transmission area, so that the two is fixed together.As shown in fig. 4 a or fig. 4b.Wherein, in Fig. 4 A transmission area entire
It is symmetrically distributed at two, therefore is illustrated as in Fig. 4 A sectional view at upper and lower two about the center of circle on fluorescent wheel disk, accordingly, diffusion
Layer 33 also corresponds to transmission area 32 and is provided at two.Simultaneously with this at two transmission area be located at the also phosphor region of same circumferential position,
It is being not shown in the figure.In figure 4b, transmission area therefore is illustrated as one in Fig. 4 B sectional view at one on entire disk-shaped substrate
Locate 32 transmission areas, to accordingly be also equipped with diffusion layer 33 at one, 31 be phosphor region.Above-mentioned Fig. 4 A, Fig. 4 B is only symbolically
Illustrate the positional relationship and the distribution example on fluorescent wheel that diffusion layer and transmission area are correspondingly arranged, and is not specifically limited.
Another kind is achieved in that diffusion layer 33 is a piece of sector, and the sector central angle is corresponding with circular arc where transmission area
Center of circle angle it is identical, diffusion layer 33 is by passing through riveting in the folding corner region of fan-shaped central angle and the central center of circle region of fluorescent wheel
Fixation is connect, perhaps fixed by dispensing or is fixed jointly using aforementioned two ways.In this implementation, fan-shaped
Diffusion into the light emitted is played the role of in part at least corresponding with transmission area 32 on diffusion layer 33.
Diffusion layer 3 can be made of diffuser plate material, and can either transmit can also diffuse through swashing for the diffusion board structure
Light.
Diffusion layer 3 is also possible to one layer of frosted glass, for example can be vitreous silica or K9 material.
Diffusion layer 3 can be scattering diffusion, is also possible to diffraction diffusion, does not limit specific diffusion way herein.
Wherein, the upper surface of diffusion layer 3 changes the diverging of incidence angle for rough surface to realize the diffusing reflection to light
Angle and direction, lower surface are smooth surface, convenient for being adhesively fixed with the smooth glass surface of transmission area.
The transmission area 32 of fluorescent wheel 3 is used for the laser transmissive at least for a kind of color, in embodiments of the present invention, with fluorescence
The rotation of wheel is respectively used to the laser of transmission two kinds of colors of first laser and second laser, wherein first laser swashs for non-laser
Light source is encouraged, second laser is laser pumping light source.It include that first laser is saturating by transmission area 32 according to the band of position of transmission laser
Area and second laser transmission area are penetrated, accordingly, it includes first laser diffusion region and second laser diffusion region that diffusion layer 33 is also corresponding.
The dispersion angle to light of first laser diffusion region can be identical with dispersion angle of the second laser diffusion region to light, can also not
Together, in embodiments of the present invention, the dispersion angle to light of first laser diffusion region is greater than second laser diffusion region to the hair of light
Scattered angle is different speckle effect caused by the laser based on different colours and is balanced setting, if first laser
It is laser pumping light, second laser is non-excitation light, then the dispersion angle relationship of corresponding diffusion region is then reversed.
The plane distribution signal of first laser diffusion region and second laser diffusion region on diffusion layer 33 is as shown in Figure 5A, the
One laser diffusion region 331, second laser diffusion region 332 is identical as the subregion of transmission area 32 on fluorescent wheel 3, also includes first sharp
Transmitance region and second laser transmission area (not shown).In Fig. 5 A, diffusion layer 33 is the sum of two sections of shade circular shapes, with
And it is also possible to the sum of fan-shaped region 331 and fan-shaped region 332 as shown in Figure 5 B, when diffusion layer 33 is fan shape, thoroughly
Penetrating area 32 can be still one section of arc-shaped or a piece of fan-shaped region.Only illustrate herein the shape of diffusion layer, subregion and
With the corresponding relationship of transmission area, and it is not specifically limited.The specific fixed form of diffusion layer 33 and transmission area 32 is also it has been observed that can
It, can also be by carrying out riveting in folding corner region or dispensing or both is combined and is fixed to be binded by silica gel.
In embodiments of the present invention, by the way that diffusion layer is arranged in fluorescence wheel surface, the diffusion layer is at least corresponding with transmission area
Setting, diffusion layer is moved as a part of fluorescent wheel with the rotation of fluorescent wheel, to be equivalent to the diffusion of a piece of movement
The diffusion sheet of piece, movement can generate more space random phase to light beam, to destroy the constant phase difference for generating interference
Condition play the role of dissipation spot so that laser is first spread before incident transmission area.
Corresponding transmission area includes first laser transmission area and second laser transmission area, and diffusion layer also includes first laser diffusion
Swashing for balanced different colours is capable of by the way that two diffusion regions are arranged with the angle of different divergings in area and second laser diffusion region
Speckle effect degree caused by light reaches comparable dissipation spot effect.
Embodiment 2
The embodiment of the present invention 2 is a kind of specific implementation on the basis of embodiment 1, and same section repeats no more, different
Be that above-mentioned first laser specifically can be red laser, second laser specifically can be blue laser.Blue laser wavelengths are short,
Usually as laser pumping light, the longer fluorescence of excitated fluorescent powder generation wavelength.
Since human eye is different to the laser-formed speckle image sensitivity of different colours, for example human eye dissipates red laser
The sensitivity of spot is greater than for blue laser, therefore to reach the comparable display effect of the two, it usually needs increasing pair
The dissipation spot degree of red laser.
In order to reach the purpose, in the embodiment of the present invention, hair of the first laser diffusion region, that is, red laser diffusion region to light
It dissipates angle and is greater than second laser diffusion region, that is, blue laser diffusion region to the dispersion angle of light.
Though in use, having different dispersion angle regions, diffusion layer is processed usually as a whole parts,
In embodiments of the present invention, diffusion layer structure can be made up of semiconductor lithography process, by using template and lithography step,
The formation of different dispersion angles is carried out to same frosted glass or diffuser plate material, outside the formation of different dispersion angles and diffusion layer
The granularity on surface, shape, arrangement mode are related.Two pieces of different dispersion angles can be made in a piece of diffusion layer structure
Region, such as the dispersion angle in one piece of region is 1 ~ 2 degree, the dispersion angle in another piece of region is 3 ~ 5 degree, so as to passing through
The laser in the region carries out the diffusion of respective degrees.
It equally can refer to shown in Fig. 5 A and Fig. 5 B, diffusion layer 33 is provided with blue laser diffusion region 332 and red laser expands
Area 331, hereinafter referred to as blue light diffusion region and feux rouges diffusion region are dissipated, is respectively used to transmit and spread blue laser and red laser,
Specifically, the different angles of divergence are formed by semiconductor lithography process above-mentioned on blue light diffusion region 332 and feux rouges diffusion region 331
The outer surface of degree, it is therefore an objective to which the stronger laser beam of directional carries out diffusing reflection, increases the angle of divergence of laser beam, destroys light
The stability of beam space quadrature, to destroy the condition for generating interference.Wherein, the angle of divergence of the feux rouges diffusion region to laser beam
Degree is greater than blue light diffusion region, it is therefore an objective to increase the degree of divergence to red laser, human eye is made to observe the throwing of feux rouges and blue light
Shadow effect is suitable.
And further, it is contemplated that the Energy distribution of laser is Gaussian, as shown in figure 16, near 0 degree of optical axis
Light energy more concentrate, incident angle is identical, and phase or phase difference are stablized, and is easy for generating interference, this is also to cause to swash
The main reason for coherence of light is strong, so that speckle phenomena is serious when light source being caused to form projected image.Therefore, in order to improve to red
For feux rouges diffusion region 331 multiple sub- diffusion regions can be set, multiple sub- diffusion regions are to red in the dissipation spot effect of color laser
The dispersion angle of laser is set as different, wherein the sub- diffusion region in multiple sub- diffusion regions positioned at intermediate region is to red laser
Dispersion angle be greater than positioned at the sub- diffusion region of two side areas to the dispersion angle of red laser；And shared area is also greater than two
The region that can more concentrate laser beam intermediate energy is arranged, in this way with biggish in the area of the sub- diffusion region of side region
The diffusion region of the type of the angle of divergence and larger area is diffused, and improves the dissipation spot degree to red laser light beam.
As shown in figure 8, feux rouges diffusion region is divided into 3 sub- diffusion regions of red laser, 331a, 331b, 331c, shared by three
Angle ratio in, angle shared by 331b is more than or equal to the sum of 331a and 331c, and the angle ratio of 331a and 331c are suitable.With
Red diffusion region account for central angle be 108 degree for, 331b accounts for 54 degree, and 331a and 331c are respectively 27 degree, only illustrates herein qualitative
Illustrate the different diffusion angle distribution in three sub- diffusion regions, does not limit specific value.And the part 331b is to the angle of divergence of light
Spend the dispersion angle also greater than the part 331a and 331c to light.For example, the angle of divergence of the part 331b can be set to 5 degree ~ 5.5
It spends, the angle of divergence at 331a can be set to 2 degree ~ 2.5 degree, and the angle of divergence of 331c can be set to 2.5 degree ~ 3 degree, in this way, red
The gradual arrangement in each sub- diffusion region in color laser diffusion region can effectively carry out the phase that disappears for the characteristics of gaussian laser type light beam
It is dry, most of light beam near 0 degree of optical axis is broken up, increases the light beam of more dispersion angles, reduces red laser
Degree of coherence.
In the embodiment of the present invention, red laser and blue laser transmission area corresponding position are provided with diffusion layer on fluorescent wheel,
Diffusion layer includes red laser diffusion region and blue laser diffusion region, diffusion layer as fluorescent wheel a part with fluorescent wheel
Rotation and move, to be equivalent to the diffusion sheet of a piece of movement, the diffusion sheet of movement light beam can be generated more space with
Machine phase, so that the condition for generating the constant phase difference of interference is destroyed, so that red laser and blue laser are respectively incident saturating
It is first spread before penetrating area, plays the role of dissipation spot.
Embodiment 3
The embodiment of the present invention 3 is remodeling on the basis of embodiment 1 or embodiment 2, identical as embodiment 1 or embodiment 2
The content of part repeat no more.
The difference is that, diffusion layer 33 is in addition to corresponding with transmission area 32 with embodiment 1 and embodiment 2, and also and fluorescence
The corresponding setting in area 31, wherein the region that diffusion layer 33 is correspondingly arranged with phosphor region 31 is less than diffusion layer to the dispersion angle of light
Dispersion angle of 33 regions being correspondingly arranged with transmission area 32 to light.Herein, the region of the diffusion layer of corresponding phosphor region is to laser
The degree of divergence of excitation light is relatively weak, primarily serves the effect for homogenizing laser pumping light beam.
Since phosphor region and transmission area are usually located on fluorescent wheel excircle, a close ring is formed.As shown in Figure 9
The positive mapping diagram of fluorescent wheel, the region shape where diffusion layer 33 and phosphor region and transmission area are adapted, also are located at entire
Fluorescent wheel outer circumferential position is a complete circular ring structure.Figure 10 is the schematic diagram of the section structure of Fig. 9, as shown in Figure 10,
It is disposed with phosphor region 31 in 3 disc face of fluorescent wheel, is located at transmission area 32 and the phosphor region of same annulus with phosphor region 31
31, the diffusion layer 33 on the outside of transmission area.Here, the fixed form of diffusion layer 33 and phosphor region 31 and transmission area 32 may refer to reality
It applies described in example 1, details are not described herein.Consider to minimize on the influence of the chemical stability of phosphor region fluorescent powder, of the invention real
It applies in example, diffusion layer preferably, is not fixed by way of silica gel bonding with phosphor region, but by round with transmission area place
The corresponding angle of arc, fan-shaped center of circle angular zone and fluorescent wheel middle section carries out riveting and is crimped together, and is aided in correspondence
Position mode for dispensing glue is fixed.
In embodiments of the present invention, diffusion layer 33 is also correspondingly arranged with phosphor region 31, positioned at the outer surface of phosphor region 31, this
When, dichroic film plated film 312 can be located at the surface of phosphor region 31, can also be located at connecting with phosphor region 311 for diffusion layer 33
The inner surface of touching, i.e., when diffusion layer 33 be a diffuser plate or a piece of frosted glass when, plated film can be set diffusion board structure or
On the inner surface of person's frosted glass being in contact with phosphor region.And in order to increase the light quantity transmitted into diffuser plate, it is being embodied
When, one layer of anti-reflection film of plating can also be added in the outer surface of diffuser plate, the light quantity that laser is transmitted through diffuser plate can be increased.
In embodiments of the present invention, fluorescent wheel 3 is transmission-type fluorescent wheel, and in the prior art, transmission-type fluorescent wheel is usual
As shown in Figure 1, being realized by gripping phosphor region among layer glass plate, and dichroic film is plated in the inside of front glass, but
It is since the coefficient of heat conduction of glass is low, heat dissipation is slow, and being easy to build up along with the amount of heat that fluorescence excitation generates makes fluorescent powder
Layer temperature sharply increases, and entire fluorescent wheel temperature also increases, and the reduction of fluorescence conversion efficiency is caused, simultaneously because colloid is
Organic material, chemical stability is low when high temperature, is easy to produce precipitate, the transfer efficiency of fluorescence is caused to reduce, while colloid has
There is certain penetrance, and there is a degree of absorption to luminous energy, so either incident laser or through reflection glimmering
Light can all generate the loss of a part of luminous energy when passing through colloid layer (the i.e. above-mentioned phosphor powder layer), to reduce the excitation effect of fluorescence
Rate.
And in the embodiment of the present invention, phosphor region 31 can be mixed and be formed by curing by fluorescent powder and inorganic material, such as logical
Oversintering technique by fluorescent powder curing to ceramics, quartz or glass, rather than passes through colloid adhering and solidifying.Inorganic material
Can be with Ceramics, quartz or glass.Phosphor region forms one layer of fluorescence coating after sinter molding, is transparent, can make to be excited
The fluorescence of hair penetrates.As shown in fig. 7,311 be phosphor region, it is the mixed layer of inorganic material and fluorescent powder, 312 is positioned at phosphor regions
The dichroic film film plating layer of outer surface, laser pumping light, usually blue laser first pass through dichroic film transmission and are incident to fluorescence
Area, then excitation is converted to fluorescence, and a part of fluorescence is by the reflection and a part of fluorescence of dichroic film 312 directly through 311
Phosphor region (hyaline layer) is projected from 3 back side of fluorescent wheel, realizes the transmission to fluorescence.
In embodiments of the present invention, since corresponding phosphor region is also equipped with diffusion layer, and diffusion layer is corresponding with phosphor region sets
The region set is less than region that the diffusion layer and the transmission area are correspondingly arranged to the dispersion angle of light to the dispersion angle of light, from
And the laser pumping light of fluorescence can be excited to also function to the effect of diffusion incident fluorescence area, but the purpose spread herein is mainly
Laser pumping light is homogenized rather than the diverging of wide-angle.When blue laser is excitation light, blue laser reaches expansion first
Layer is dissipated, re-incident phosphor region is homogenized by the diffusion of diffusion layer, fluorescence is implemented to excite.The advantage of doing so is that due to laser
There are unbalanced situations for the laser beam density that device issues, especially when big laser facula is reduced into the hot spot of small area
When, optical density becomes larger, and this non-uniform phenomenon will cause local light energy and excessively concentrate, thus with such laser facula pair
Fluorescent wheel may generate calcination damage when being excited to phosphor powder layer, the launching efficiency of fluorescence be reduced, so working as laser pumping
When light beam passes through above-mentioned diffusion layer, beam energy can be homogenized, optical energy density distribution is also relatively uniform, to keep away
Exempt from the damage to phosphor powder layer.
And above-mentioned diffusion layer is a complete annulus shape, it can be whole to avoid being given when being only oppositely arranged with transmission area
The problem of a fluorescent wheel bring counterweight.This is because if fluorescent wheel is locally heavier, for example only transmission area is arranged and is spread
Layer, transmission area is only a part or only a piece of sector of fluorescent wheel excircle, may make entire fluorescent wheel structural focus
Offset can cause at the uniform velocity to rotate when center of gravity and rotation center are inconsistent, influence the stability of fluorescent wheel work, need
Additionally to pass through counterweight, for example be reached by slotting in fluorescent wheel metal profile region or carrying out loss of weight to metal sheeting
Counterweight purpose.And when diffusion layer be one section of arc-shaped when, that is, a circle ring part a part when, processing and gluing
The processing of conjunction and assembly precision requirement are also all relatively high, and the processing and installation difficulty of entire circle ring part substantially reduces.
And above-mentioned annulus shape is also possible to only be hollow shape in center of circle neighbouring position region, when using this shape
When shape, annulus shape can be still riveted together by the drive motor shaft of rivet and fluorescent wheel, fluorescent wheel, or be aided with again
Riveting location carries out dispensing and is fixed.
And according to the differentiation to different laser and work purpose, similarly, can also divide on above-mentioned circular diffusion layer
Different laser diffusion regions is not set, and set-up mode in embodiment 1 with introducing, and details are not described herein.
To sum up, the embodiment of the present invention 3 is by the way that diffusion layer and transmission area, phosphor region to be correspondingly arranged, and and phosphor region
It is correspondingly arranged region and the dispersion angle for being correspondingly arranged region to light with transmission area is less than to the dispersion angle of light, thus can either be right
The laser for being incident on transmission area carries out dissipation spot, homogenizes at the same time it can also the laser pumping light to incident fluorescence area, improves
The job security and fluorescence launching efficiency of fluorescent wheel.
And the transmission-type fluorescent wheel that technical solution of the embodiment of the present invention provides, fluorescence and laser can be successively transmitted, is led to
It crosses and diffusion layer is set in fluorescence wheel surface, the diffusion layer is at least corresponding with transmission area, so that laser is transmiting it through fluorescent wheel
It is preceding also to play the role of dissipation spot by the diffusion of diffusion layer, eliminate individual dissipation spot component.Technology of the embodiment of the present invention
The fluorescent wheel that scheme provides exports the combining in the same direction of first laser, second laser and fluorescence, and to first laser, the
The dissipation spot of dual-laser is completed by a fluorescence wheel component, also improves the light processing efficiency of fluorescent wheel.
Embodiment 4
The embodiment of the present invention 4 provides a kind of fluorescent wheel, as different from Example 3, the diffusion on the fluorescent wheel is arranged
Layer is discoid and suitable with entire fluorescent wheel area, while covering the phosphor region of fluorescent wheel, transmission area and central motor
Shaft join domain, as shown in figure 11.
Figure 12 is the schematic diagram of the section structure of Figure 11, by two diagrams it is found that diffusion layer 33 and entire fluorescent wheel substrate area
It is identical, while covering phosphor region 31 and transmission area 32.
Diffusion layer 33, it is preferable that be made of a piece of frosted glass or diffuser plate, frosted glass material can select vitreous silica
Or K9, it can be formed by model photoetching, outer surface is rough surface, and inner surface is smooth surface.
With the circular diffusion layer phase ratio in embodiment 3, the difficulty of processing of the circular propagation layer in the embodiment of the present invention 4 into
One step reduces, while in terms of fixation, it may not be necessary to transmission area, phosphor region and diffusion layer be used adhesive means again, due to making
For a whole part, only riveting will can be passed through with the central motor shaft region of fluorescent wheel by punching in diffusion layer middle section
The mode of connecing is fixedly connected, or is aided with again and is carried out dispensing in riveting location and fix, both ensure that diffusion layer and fluorescent wheel phosphor region and
Transmission area fits closely, and can also carry out reinforcement fixation to diffusion layer, makes to keep opposing stationary with fluorescent wheel, as fluorescent wheel
A part of synchronous rotary.Due to diffusion layer component be with the comparable full wafer component of fluorescent wheel area, in entire fluorescent wheel table
The distribution of weight in face is uniform, when fluorescent wheel rotation when, diffusion layer will not because of fluorescent wheel rotation and centrifugal force and part occurs
Offset, to influence diffusion effect and influence fluorescent wheel job stability.
It and in embodiments of the present invention, can also be according to the differentiation to different laser and work purpose, to diffusion layer pair
Answer the region of transmission area that different laser diffusion subregions is set, concrete mode can be found in embodiment 1, and details are not described herein.This hair
Due to also covering phosphor region in bright embodiment, also there is diffusion homogenization, Ke Yican simultaneously to the laser in incident fluorescence area
According to, to the set-up mode of different diffusion region light dispersion angles, the difference of phosphor region and transmission area being corresponded to diffusion layer in embodiment 2
Region carries out the setting of the different dispersion angles to light.
In embodiments of the present invention, diffusion layer is a single piece, in addition to the expansion described in embodiment 1,2 to laser
It dissipates outside dissipation spot effect, which can reduce the difficulty of processing of component, while fixed form is also simpler effective, only passes through
Riveting can complete to be fixedly mounted, while can to avoid because in fluorescence wheel surface local setting bring counterweight problem,
Improve the job stability of fluorescent wheel.
To sum up, in above one or more embodiment, by being arranged diffusion layer in the outer surface of fluorescent wheel, diffusion layer with
Transmission area is correspondingly arranged, and diffusion layer follows fluorescent wheel to do period rotary motion, can be disappeared before to laser light incident transmission area
Speckle；And according to human eye to the different sensitivitys of laser speckle phenomenon, subregion is carried out to diffusion layer, and in different subregions
The different dispersion angles to light are configured, so as to the image speckle effect of balanced different laser seen by person；And it is logical
It crosses and is also correspondingly arranged diffusion layer with phosphor region, and the dispersion angle of the light of corresponding phosphor region is set smaller than corresponding transmission area
Light dispersion angle, can laser pumping light to incident fluorescence area carry out lesser degree diffusion and homogenize, improve swashing for fluorescence
Send out efficiency and fluorescent wheel job security；And by diffusion layer setting of different shapes, by using annulus or disk etc.
Symmetry figure, can be to avoid because local setting bring fluorescent wheel counterweight and the caused offset of movement be asked on fluorescent wheel
Topic, meanwhile, it, can be by the way that the riveting method of diffusion layer middle section and fluorescent wheel be completed to expand when diffusion layer is set as discoid
The fixation of layer and fluorescent wheel is dissipated, mode is simple and reliable；Above-mentioned fluorescent wheel can be realized the transmission of laser and fluorescence, while can also
Realize the dissipation spot effect of laser, the light processing efficiency of fluorescent wheel is improved.
Embodiment 5
The embodiment of the present invention 5 provides a kind of two-color laser light source, as shown in figure 13, including laser light source unit 1, further
Including blue laser and red laser, blue laser and red laser are issued respectively；First focused light passages system 2, is used for
The biggish laser facula that blue laser and red laser issue is focused, the small light spot for being contracted to be sized enters
It is incident upon fluorescent wheel 3.
Wherein, fluorescent wheel 3 can be fluorescent wheel described in embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4, excellent
Diffusion layer, the diffusion layer is arranged using the fluorescence wheel construction in embodiment 3 or embodiment 4, i.e. fluorescence wheel surface in selection of land, fluorescent wheel
It is corresponding with transmission area and phosphor region, and transmission area includes red laser transmission area and blue laser transmission area, diffusion layer
Corresponding includes red laser diffusion region and blue laser diffusion region, and specific subregion and structure can be found in 4 institute of embodiment 3 or embodiment
It states, details are not described herein.
Blue laser and red laser successively penetrate glimmering according to the rotation timing for lighting timing and fluorescent wheel of laser
The diffusion layer and transmission area of halo are emitted.
Fluorescent wheel 3 includes green emitting phosphor area, by green emitting phosphor and the mixing cured formation of inorganic material.Green emitting phosphor
Area is transparent.Blue laser is laser pumping light, and excitation green emitting phosphor issues green fluorescence.
Dichroic film is plated on green fluorescence area surface, or plates dichroic film film in the inner surface of diffusion layer, is one high thoroughly blue
Anti- green coating is excited the green fluorescence generated for transmitting blue laser and reflection；And the green fluorescence after coated reflection
Also projected through the transmission of transparent fluorescent area and along with the consistent direction of the incident direction of blue laser.
Red laser, blue laser and green fluorescence also pass through collimation focusing light path system after fluorescent wheel 3 is sequentially output
4 enter optical wand (unmarked in figure), provide laser lighting for ray machine.
Directionality due to fluorescence compared to laser wants poor, has biggish dispersion angle, and laser reaches through over-focusing
Fluorescent wheel, according to light along the principle of straightline propagation, after being emitted, laser can be projected in the state of diverging, it is therefore desirable to diverging
Light beam collimated.
And since optical wand has certain incidence angle requirement, the light beam greater than optical wand incident angle will be unable to enter light
Stick, so that light loss is caused, so in order to improve the efficiency of light source incidence optical wand, it can be by poly- before light beam of light combination enters optical wand
Coke reduces the angle of light beam, so that luminous energy as much as possible enters optical wand guiding device, improves for subsequent opto-mechanical part high
The illumination of brightness.Below in conjunction with Figure 14 example, the structure and the course of work of the two-color laser light source is described in detail.
As shown in figure 14, laser light source unit 1 includes blue laser 11, red laser 12.Wherein, blue laser 11
It is arranged vertically with red laser 12.The laser spot diameter issued at present by laser is about in 60mm or so, due to fluorescence
Excitation needs that beam area is smaller, laser facula of high-energy, and holds if light spot energy density is too big or is unevenly distributed
Fluorescence burn is easily caused, so need to carry out the laser beam that laser issues shaping, including shrink beam such as homogenizes at the processing
After can be only achieved glimmering light activated technical requirements.In embodiments of the present invention, for glimmering light activated laser spot diameter control
In 0.8mm or so, therefore, the blue laser and red laser that blue laser 11 and red laser 12 issue are needed by light
The Shape correction that spot reduces.
In a kind of specific implementation, using telescopic system, i.e., a piece of big convex lens and a piece of concavees lens (wherein convex lens
The focus of mirror and concavees lens is overlapped) shrink beam shaping is carried out, then a piece of convex lens is set before incident fluorescence wheel or two panels is convex
Lens combination focuses the light beam after shrink beam again, forms lesser hot spot and is incident to fluorescence wheel surface, meets fluorescent wheel
The received spot size requirement in surface.
And in a kind of specific implementation, as shown in Figure 14 of the embodiment of the present invention, the poly- of the first focused light passages system 2 is utilized
Big laser facula is become the small hot spot of high-energy by coke processing.Wherein, the first focused light passages system 2 includes that the first focusing is saturating
Microscope group 21 and the second condenser lens 23 are respectively arranged at blue laser wherein the first focus lens group is the first convex lens of two panels
On the emitting light path of device 11 and the red laser 12, due to carry out the to the biggish light beam or hot spot of laser emitting
The face type of focus processing, the first condenser lens is larger, so as to receive the light beam or hot spot of large area.By first
After condenser lens 21 focuses, a degree of convergence is had been carried out in blue laser or red laser light beam, if to reach glimmering
Light activated requirement then needs for fluorescent wheel to be arranged in one times of focal position of the first condenser lens, and this is unable to satisfy system
Therefore the requirement of volume design is additionally provided with the second condenser lens, can be a piece of second convex lens, close to 3 front of fluorescent wheel
Setting for secondary focusing blue laser and red laser light beam and is incident to the fluorescent wheel front, plays quickening laser light
The effect of beam focusing process.
And since red laser 12 and blue laser 11 in embodiments of the present invention are at vertical arrangement, need by
Two vertical optical paths of optical axis carry out light combination, to be incident to fluorescent wheel along the same direction, so the first focused light passages system 2
Further include the first light combination component 22, for example can be dichroscope, is set to the light of blue laser and red laser focusing
Lu Zhong has blue anti-red wavelength selection effect thoroughly, for by the red laser of two mutually perpendicular directions and blue laser into
Row closes beam, the consistent laser beam of outbound course.
It, can be successively incident according to timing is lighted after blue laser and red laser are focused to form small launching spot
Fluorescent wheel.In the embodiment of the present invention, two-color laser light source further includes control unit (not shown), for according to timing control
Light diffusion layer fluorescence corresponding with green emitting phosphor area 31 diffusion region and transmission area on 11 incident fluorescence wheel 3 of blue laser
Corresponding blue light diffusion region and the incident feux rouges of control point shiny red laser 12 diffusion region, are finally successively incident to fluorescent wheel
Phosphor region and transmission area.
In specific implementation, it is contemplated that display system white balance and light-source brightness requirement, in one cycle, feux rouges is blue
Light and green light are respectively provided with certain ignition period time.By taking display frequency is 120HZ as an example, a cycle is T=8.3ms, this
It is the time cycle of time and whole group laser light source sequential illumination that fluorescent wheel rotates a circle required.In T=8.3ms
Between in section, the lighting time of control unit control blue laser accounts for about the time of whole cycle 70%, lights in blue laser
This period in, wherein the time of 50%T is for exciting green fluorescence, and time of remaining 20%T is for transmit away, and controls
The lighting time of unit control red laser processed accounts for about the time of whole cycle 30%, accordingly, red diffusion region on fluorescent wheel
331, blue diffusion region 332, center of circle angle ratio shared by green fluorescence area 31 is about 30%, 20%, 50%, central angle angle value point
Wei not be 108 degree, 72 degree, 180 degree.Wherein, the ratio of green fluorescence is big, helps to improve integrated light source brightness.
As shown in figure 15, red laser, which is in, when blue laser is in illuminating state, in time period closes shape
State, when fluorescent wheel is rotated to green fluorescence area, diffusion layer is opposing stationary with fluorescent wheel, homogenizes expansion in corresponding with phosphor region
Region is dissipated, blue laser first passes through the diffusion region that homogenizes of diffusion layer, and reaches phosphor region excitated fluorescent powder and generate fluorescence, in
It is that fluorescent wheel exports green fluorescence within the period of 50%T；When fluorescent wheel rotates blue light transmission area, diffusion layer is located at this time
Blue light diffusion region, the blue light diffusion region that blue laser first penetrates diffusion layer are diffused the blue light transmission area for entering back into fluorescent wheel,
Then the fluorescent wheel output blue laser within this 20%T period；When closing blue laser, when lighting red laser, at this time
Fluorescent wheel rotates red transmission area, and diffusion layer is now in feux rouges diffusion region, and similarly, red laser first penetrates the feux rouges of diffusion layer
The red transmission area that diffusion region enters back into fluorescent wheel is transmitted, the fluorescent wheel output red laser within the 30%T period, thus
By a fluorescence wheel component, output of the light along consistent direction of three kinds of colors is realized, do not need to carry out optical path turn in periphery again
The optical design changed and be combined.
As previously mentioned, the blue laser, red laser and the green fluorescence that export through fluorescent wheel, need by collimating and focusing
The incident entering light stick of ability, the opto-mechanical part to connect with light source provide illumination.
Specifically, as shown in figure 14, blue laser, red laser and the green fluorescence successively projected first pass through be set to it is glimmering
First collimation lens set 41 at 3 back side of halo, collimates these light beams with dispersion angle.Wherein, the first reflecting mirror
42, make final three base for converting the blue laser, red laser and the optical path direction of green fluorescence for plane mirror
Coloured light outbound course can be towards optical wand guiding device, when not needing optical path direction conversion, it is not necessary to be arranged, and through first
Tri-color beam after reflecting mirror 41 reflects reaches tertiary focusing lens 43, for focusing blue for the last time before entering optical wand
Laser, red laser and green fluorescence, wherein the first collimation lens set 41, the first reflecting mirror 42(is optional), tertiary focusing lens
Collimation focusing light path system 4 shown in 43 composition Figure 13.Optical wand is common guiding device or light collecting device, for receiving
The light beam of blue laser, red laser and green fluorescence after tertiary focusing lens focus, and export for illuminating.In this hair
In bright embodiment, optical wand cannot be introduced into greater than the light beam for deviateing 25 degree of dispersion angles of optical axis, the dispersion angle within the scope of 25 degree
Light beam can fully enter optical wand, determine the brightness of lighting source into the light quantity of optical wand, thus in order to allow light beam as far as possible
More enters optical wand, needs for the light beam of the various colors exported from fluorescent wheel to be focused again to reduce and meet optical wand
Incident angle angle provides the lighting source of high brightness.
To sum up, two-color laser light source provided in an embodiment of the present invention, including blue laser and red laser are sent out respectively
Blue laser and red laser out further include fluorescent wheel, by fluorescence wheel surface be arranged diffusion layer, when at least with transmission area phase
The rotation of fluorescent wheel can be followed to do as a part of fluorescent wheel, the work characteristics rotated using fluorescent wheel itself to when corresponding to
Rotary motion, so that diffusion layer is equivalent to the diffusion sheet of a piece of movement, so that laser also passes through before transmiting through fluorescent wheel
The diffusion of diffusion layer can be diffused it while transmiting to laser using a fluorescence wheel component and play dissipation spot
Effect, eliminates individual dissipation spot component, simplifies the design of light-source system dissipation spot optical path, and can provide height for ray machine
The illumination of quality.And when diffusion layer is also correspondingly arranged with phosphor region, dissipation spot can be diffused to transmission laser
Meanwhile the laser pumping light in incident fluorescence area is diffused can homogenize simultaneously, the launching efficiency of fluorescence is improved, it can also be
It is saved in optics framework special to the homogenized component of laser pumping light progress.
And in the embodiment of the present invention, two kinds of laser are successively transmitted by fluorescent wheel transmission area, simplify two-color laser
Combining design, while the laser diffusion region by the way that different dispersion angles are arranged in diffusion layer, can be directed to red laser and blue
The different speckle effect of laser targetedly dissipates spot, reaches balanced dissipation spot effect.Fluorescence in the embodiment of the present invention
Wheel is transmission-type fluorescent wheel, and phosphor region can alleviate prior art fluorescence by fluorescent powder and the mixing cured formation of inorganic material
Fluorescence conversion efficiency caused by powder and glue mix is low, and the low problem of radiating efficiency, transmission-type fluorescent wheel is transmissive to fluorescence, at this
In the two-color laser light source of inventive embodiments, red laser, blue laser and green fluorescence rotate timing successively according to fluorescent wheel
Output advantageously reduces two-color laser light source to export using the combining that a fluorescence wheel component just completes three primary colours
Optics framework complexity, and then it is conducive to the miniaturization of projection device.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (14)
1. a kind of fluorescent wheel, including phosphor region and transmission area；The phosphor region issues fluorescence for the excitation of stimulated light excitation light；Its
It being characterized in that, the phosphor region is additionally provided with plated film in laser pumping light incident side, and the plated film is used for transmission laser excitation light,
Reflecting the fluorescence, wherein the part fluorescence that the phosphor region issues transmits after the coated reflection through the phosphor region, and
Edge is emitted with the consistent direction of laser pumping light incident direction from the fluorescent wheel back side；
The transmission area for transmiting first laser and second laser respectively；
The fluorescence wheel surface is additionally provided with diffusion layer, and the diffusion layer is at least correspondingly arranged with the transmission area, for distinguishing
It is diffused before reaching the transmission area to the first laser and second laser, and is emitted from the fluorescent wheel back side.
2. fluorescent wheel according to claim 1, which is characterized in that the transmission area includes first laser transmission area and second
Laser transmission area, accordingly, the diffusion layer include first laser diffusion region and second laser diffusion region.
3. fluorescent wheel according to claim 2, which is characterized in that the dispersion angle to light of the first laser diffusion region
Greater than the second laser diffusion region to the dispersion angle of light, wherein second laser is laser pumping light.
4. fluorescent wheel according to claim 1, which is characterized in that the diffusion layer and the transmission area shape are adapted,
And the transmission area surface is fixed on by silica gel bonding.
5. fluorescent wheel according to claim 1, which is characterized in that the diffusion layer be sector, it is described sector central angle with
The corresponding center of circle angle of the transmission area is identical, and the diffusion layer passes through to be riveted in fan-shaped center of circle angular zone and the fluorescent wheel
And/or dispensing is fixed.
6. fluorescent wheel according to claim 1 or 2, which is characterized in that the diffusion layer is also corresponding with the phosphor region to be set
It sets, wherein the region that the diffusion layer is correspondingly arranged with the phosphor region is less than the diffusion layer and institute to the dispersion angle of light
Region that transmission area is correspondingly arranged is stated to the dispersion angle of light.
7. fluorescent wheel according to claim 6, which is characterized in that the diffusion layer is in the form of annular discs, and the diffusion layer is in
Centre region and the fluorescent wheel riveting fixation and or dispensing fix.
8. fluorescent wheel according to claim 1, which is characterized in that the diffusion layer is frosted glass or diffusion sheet material.
9. fluorescent wheel according to claim 1, which is characterized in that the phosphor region is mixed solid by fluorescent powder and inorganic material
Change and formed, the phosphor region is transparent.
10. fluorescent wheel according to claim 9, which is characterized in that the inorganic material includes ceramics, quartz or glass
Glass.
11. fluorescent wheel according to claim 1, which is characterized in that the transmission area is transparent glass material.
12. fluorescent wheel according to claim 2, which is characterized in that the diffusion layer is made up of semiconductor lithography process.
13. fluorescent wheel according to claim 1, which is characterized in that the diffusion layer outer surface is additionally provided with anti-reflection film.
14. a kind of two-color laser light source, including blue laser and red laser, issue blue laser respectively and red swashs
Light and fluorescent wheel, which is characterized in that the fluorescent wheel is the fluorescent wheel as described in claim 1-13 is any, wherein described
First laser is red laser, and the second laser is blue laser, and the phosphor region of the fluorescent wheel includes green emitting phosphor, institute
Stating laser pumping light is blue laser, and the green emitting phosphor is excited to issue green fluorescence.
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| CN201510658098.4A CN106597786B (en) | 2015-10-14 | 2015-10-14 | A kind of fluorescent wheel and two-color laser light source |
| US15/294,595 US10114210B2 (en) | 2015-10-14 | 2016-10-14 | Fluorescent wheel, double-color laser source and laser projection equipment |
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| US11187888B2 (en) | 2017-11-24 | 2021-11-30 | Sharp Nec Display Solutions, Ltd. | Light source device, projector, and chromaticity adjustment method |
| CN109164589A (en) * | 2018-09-18 | 2019-01-08 | 无锡视美乐激光显示科技有限公司 | A kind of light splitting Multiplexing apparatus and light-source system |
| CN113064320A (en) * | 2021-02-25 | 2021-07-02 | 江苏师范大学 | Light source system for improving green light brightness |
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