The content of the invention
In view of this, the invention provides a kind of colour wheel module, light source module and optical projection system, to solve
Existing iridescent wheel construction complexity and the poor problem of radiating effect.
To achieve the above object, the present invention provides following technical scheme:
A kind of colour wheel module, the drive device that the colour wheel module includes colour wheel and drives the colour wheel to rotate,
The colour wheel includes transparency carrier and is fixed on multiple light emitting modules and multiple on the transparency carrier surface
Filtration module;
The multiple light emitting module is spliced into the luminescent layer of annular shape;The multiple filtration module is spliced into circle
The filter layer of ring-type, the filter layer is located at the inner or outer side of the luminescent layer;
The light emitting module includes the first substrate contacted with transparency carrier layer and positioned at described first
At least one functional layer of substrate layer surface;
The filtration module is corresponded with the light emitting module and set, to repair the corresponding luminous mould
The light beam of block outgoing.
Preferably, the filtration module and light emitting module are located on the same surface of the transparency carrier, and
The corresponding light emitting module of the filtration module is located at same as the center of circle with the transparency carrier pivot
In one sector region, or, the corresponding light emitting module of the filtration module is located at the transparent base
Plate pivot is in the different sector regions in the center of circle.
Preferably, the filtration module and light emitting module are located at two relative tables of the transparency carrier respectively
On face, and the corresponding light emitting module of the filtration module is located at and is with the transparency carrier pivot
In the same sector region in the center of circle, or, the corresponding light emitting module of the filtration module is located at institute
State in the different sector regions that transparency carrier pivot is the center of circle.
Preferably, the filtration module includes second substrate layer and positioned at the filter of the second substrate layer surface
Light film layer, the second substrate layer is transparent substrate layer.
Preferably, the first substrate layer is metal or ceramic substrate layer;At least one functional layer bag
Reflecting layer or light emitting functional layer are included, or, at least one functional layer includes being set in turn in described the
The reflecting layer of one substrate layer surface and light emitting functional layer, the light emitting functional layer are phosphor powder layer.
Preferably, the second substrate layer is glass or process for sapphire-based flaggy;
The transparency carrier is sapphire substrate.
Preferably, the light emitting module and filtration module are fixed on the transparency carrier in gluing mode
Surface.
A kind of light source module, including excitation source, colour wheel module, at least one first blooming pieces and extremely
Few second blooming piece;
The excitation source is used to launch exciting light;
The colour wheel module is colour wheel module as above described in any one, the light emitting module of the colour wheel module
In the light path of the exciting light, and under the irradiation of the exciting light outgoing corresponding color light beam;
First blooming piece is located between the excitation source and colour wheel module, described sharp for transmiting
It is luminous, and the light beam of the light emitting module outgoing is reflexed on second blooming piece;
Second blooming piece is used to for the light beam to reflex to corresponding filtration module, so that described
Filtration module is repaired to the light beam.
Preferably, the light source module also includes collecting lens, and the collecting lens is located at corresponding described
In the light path of colour wheel module, for collecting the light beam repaired through the filtration module.
A kind of optical projection system, including the as above light source module described in any one.
Compared with prior art, technical scheme provided by the present invention has advantages below:
Colour wheel module provided by the present invention, light source module and optical projection system, filter layer and the equal position of luminescent layer
In the surface of transparency carrier, and filter layer is located at the inner side and outer side of luminescent layer, such that it is able to pass through optics
The light beam of light emitting module outgoing is reflexed to and repaired in corresponding filtration module by diaphragm, and then can be subtracted
The hold assembly of optical filter is fixed less, simplifies the structure of colour wheel module;
Also, due to light emitting module include first substrate layer and positioned at the first substrate layer surface extremely
One function layer, and luminous functional layer less is not contacted directly with transparency carrier, therefore, luminous function
Layer produce heat can by first substrate layer it is dispersed go out, so as to improve the radiating of colour wheel module
Performance, it is to avoid due to the phenomenon that radiating is concentrated and colour wheel module bursts caused by thermal expansion is uneven.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
An embodiment provides a kind of colour wheel module, the colour wheel module includes colour wheel and driving
The drive device that colour wheel is rotated.Wherein, colour wheel includes transparency carrier 10 and is fixed on transparency carrier 10
Multiple light emitting modules on surface and multiple filtration modules, these light emitting modules are spliced into the luminescent layer of annular shape,
These filtration modules are spliced into the filter layer of annular shape.Wherein, the light emitting module of different colours is in exciting light
Irradiation under outgoing different colours light beam, the light beam of these different colours can be mixed into white needed for projection
Light;The filtration module is corresponded with the light emitting module and set, to repair the corresponding luminous mould
The light beam of block outgoing.
Illustrated so that colour wheel includes light emitting module 110,111,112 and 113 as an example below, accordingly,
The colour wheel also includes filtration module 120,121,122 and 123, and filtration module 120 is used to repair luminous mould
The light beam of the outgoing of block 110, filtration module 121 is used to repair the light beam of the outgoing of light emitting module 111, filters
Module 122 is used to repair the light beam of the outgoing of light emitting module 112, and filtration module 123 is used to repair luminous mould
The light beam of the outgoing of block 113.Wherein, the structural representation of transparency carrier 10 is as shown in figure 1, transparency carrier
10 and be fixed on its surface light emitting module 110,111,112 and 113 structural representation such as Fig. 2
It is shown, transparency carrier 10, it is fixed on the light emitting module 110,111,112 and 113 on its surface and solid
The structural representation for being scheduled on the filtration module 120,121,122 and 123 on its surface is as shown in Figure 3.This
Light emitting module and filtration module in invention are not limited to four, it is also possible to more than 4 or each less than 4,
Such as three, six, eight, those skilled in the art can need to set light emitting module according to emergent light
Number.Meanwhile, the arc length of different light emitting modules be able to can also be differed with identical in the present invention, for example,
Can be required according to light extraction, the arc length ratio between each invention module is set and then the color group of light extraction is adjusted
Close.
With reference to Fig. 1, transparency carrier 10 is circular transparency carrier.Also, the carrier as colour wheel and
Matrix, the material of transparency carrier 10 can be for quartz, glass, sapphire, transparent aluminium nitride or other are saturating
The good material of bright heat conduction.Preferably, transparency carrier 10 is sapphire substrate.
With reference to Fig. 2, light emitting module 110,111,112 and 113 is single module, its pass through it is gluing or
Other modes are fixed on the transparent substrate 10, and spliced light emitting module 110,111,112 and 113
Constitute circular luminescent layer.When colour wheel is rotated, the exposure pathways of exciting light hot spot are located at the annular shape
In luminescent layer.
Also, each light emitting module include first substrate layer and positioned at first substrate layer surface at least
One function layer, such as including first substrate layer, positioned at the reflecting layer of first substrate layer surface and positioned at reflection
The light emitting functional layer of layer surface, of course, it is possible to these structure sheafs are designed according to the actual requirements, at one
In embodiment, light emitting module can be including first substrate layer, positioned at the lighting function of first substrate layer surface
Layer or reflecting layer.When light emitting module is including first substrate layer and positioned at the reflecting layer of first substrate layer surface,
The light emitting module only reflects Stimulated Light without producing exciting light, can thus make Stimulated Light such as blue light and swash
Luminous such as gold-tinted synthesizes white light.
As shown in figure 4, light emitting module can include first substrate layer 1100, be sequentially located at first substrate layer
The reflecting layer 1101 on 1100 surfaces and light emitting functional layer 1102.Wherein, reflecting layer 1101 can be metal
Reflecting layer, light emitting functional layer 1102 can be phosphor powder layer, first substrate layer 1100 can for metal or
Ceramic material, preferably aluminium nitride, naturally it is also possible to be other materials, if its thermal coefficient of expansion with it is saturating
Bright substrate 10 is matched, thermal conductivity is high.When first substrate layer 1100 uses ceramic material such as aluminium nitride
Or during sapphire, light emitting functional layer 1102 can use traditional silica gel material as the carrier of fluorescent material,
Reflecting layer 1101 can also use nothing using traditional silica gel material as the carrier of scattering/reflection grain
Machine material is used as carrier adhesives;When first substrate layer 1100 is using metal material, light emitting functional layer
1102 and reflecting layer 1101 can only use silica gel material as carrier adhesives.In the present embodiment, scattering
/ reflection grain is including aluminum oxide, titanium oxide, barium sulfate, yittrium oxide, zirconium oxide, zinc oxide etc. in material
One or more of combination.
With reference to Fig. 3, filtration module 120,121,122 and 123 is also single module, again by glue
Viscous or other modes are fixed on the transparent substrate 10, and the and of spliced filtration module 120,121,122
123 constitute circular filter layer.Wherein, filtration module includes second substrate layer and positioned at second substrate layer
The filter membranous layer on surface, second substrate layer is transparent substrate layer, it is preferred that second substrate layer for glass or
Process for sapphire-based flaggy, filter membranous layer be plated in second substrate layer surface repair color film layer.
In the present embodiment, filtration module and light emitting module are corresponded and set, and by light path by luminous mould
In the beam Propagation of block outgoing to corresponding filtration module, so that the filtration module repairs corresponding luminous mould
The light beam of block outgoing.The meaning of the chromaticity coordinates for being trimmed to adjustment or amendment light beam in the present embodiment.Optical filtering mould
Block can be by retaining the light of the most of spectral region in correspondence light beam, filtering out partial spectrum on a small quantity
Light repairs the chromaticity coordinates of the light beam, certainly, in other embodiments, if the spectrum of light beam is all in filter
Within the reserved-range of optical module, then the light beam passes through the filtration module completely.
Specifically, the corresponding light emitting module of filtration module is located at the same surface of transparency carrier 10, such as
Shown in Fig. 3, filtration module 120 is located at the pivot of transparency carrier 10 with corresponding light emitting module 110
For in the same sector region in the center of circle and positioned at the same surface of transparency carrier 10, filtration module 121 with it is right
The light emitting module 111 answered is located in the same sector region with the pivot of transparency carrier 10 as the center of circle and position
In the same surface of wheel surface, filtration module 122 is located at transparent base with corresponding light emitting module 112
The pivot of plate 10 is in the same sector region in the center of circle and positioned at the same surface of transparency carrier 10, filter
Optical module 123 is located at same as the center of circle with the pivot of transparency carrier 10 with corresponding light emitting module 113
In sector region and positioned at the same surface of transparency carrier 10.
Certainly, the present invention is not limited to this, in other embodiments, the corresponding hair of filtration module
Optical module may be located in the different sector regions with the pivot of transparency carrier 10 as the center of circle, it is preferred that
Filtration module is located at what the pivot of relative transparent substrate 10 was centrosymmetric with corresponding light emitting module respectively
In two sector regions.As shown in figure 5, the corresponding light emitting module of filtration module is arranged on transparent base
The same surface of plate 10, also, filtration module 120 and corresponding light emitting module 110 be located at respectively it is relative
In two sector regions that the pivot of transparency carrier 10 is centrosymmetric, filtration module 121 with it is corresponding
Light emitting module 111 is located at two sector regions that the pivot of relative transparent substrate 10 is centrosymmetric respectively
Interior, filtration module 122 is located at the pivot of relative transparent substrate 10 respectively with corresponding light emitting module 112
In two sector regions being centrosymmetric, filtration module 123 distinguishes position with corresponding light emitting module 113
In in two sector regions that the pivot of relative transparent substrate 10 is centrosymmetric.Certainly, when optical filtering mould
Block with corresponding light emitting module not in same sector region, not Central Symmetry can also, for example,
With reference to Fig. 5, the corresponding light emitting module of light emitting module at 110 positions can also at 122 positions.Or,
With reference to Figure 10 and Figure 11, the corresponding light emitting module of filtration module is respectively positioned at the two of transparency carrier 10
On individual relative surface, and the corresponding light emitting module of filtration module is located at and is rotated with the transparency carrier
Center for the center of circle same sector region in, or, the filtration module it is corresponding light emitting module position
In in the different sector regions with the transparency carrier pivot as the center of circle.
Additionally, the filter layer that multiple filtration modules are spliced into may be located at the hair that multiple light emitting modules are spliced into
The inner side of photosphere, as shown in figure 3, i.e. filtration module 120,121,122 and 123 is located at light emitting module
110th, 111,112 and 113 inner side;In other embodiments, filter layer can also be located at luminescent layer
Outside, as shown in fig. 6, i.e. filtration module 120,121,122 and 123 be located at light emitting module 110,111,
112 and 113 outside.
In the present embodiment, each light emitting module is first prepared by first substrate layer 1100 using substrates such as aluminium nitride,
Then it is spliced to again on sapphire substrate i.e. transparency carrier 10.Because sapphire thermal conductivity only has 25
W/MK-35W/MK, if directly brushing luminescent layer on sapphire substrate, then, the colour wheel module should
During for high power laser light source, the heat at hot spot cannot effectively spread, and have significant heat
Temperature at concentration effect, and hot spot rises quickly, causes the light efficiency of colour wheel module to decline;If the first base
Flaggy 1100 is relatively low substrate such as aluminum oxide of thermal conductivity etc., can produce heat accumulation regions, and its temperature is obvious
Higher than other regions, so can not only reduce the light efficiency of colour wheel module, can also influence light emitting module with it is transparent
Bonding between substrate, causes the heat fatigue of transparency carrier, influences the reliability of colour wheel module.
Based on this, using high thermal conductivity materials such as aluminium nitride as first substrate layer 1100 in the present embodiment,
When exciting light is irradiated in light emitting functional layer 1102, the heat that hot spot is produced in light emitting functional layer 1102
Amount is that first substrate layer 1100 has obtained effective diffusion by aluminium nitride substrate, such as dotted arrow institute in Fig. 7
The direction of heat diffusion is shown as, by first substrate layer 1100 after effective diffusion and sapphire transparent substrate
10 border is in an equal temperature state, that is to say, that the even heat distribution on transparency carrier 10, does not have
There is the phenomenon of significant heat aggregation.
The colour wheel module that the present embodiment is provided, filter layer and luminescent layer are respectively positioned on the surface of transparency carrier, and
Filter layer is located at the inner side and outer side of luminescent layer, such that it is able to pass through what blooming piece launched light emitting module
Light beam is reflexed to be repaired in corresponding filtration module, and then can reduce the clamping part of fixed optical filter
Part, simplifies the structure of colour wheel module, reduces the volume and weight of colour wheel module, and colour wheel module not by upper
The size limitation of the optical filter of side, its size can do more.
Also, due to light emitting module include first substrate layer and positioned at the first substrate layer surface extremely
Few One function layer and light emitting functional layer, i.e. light emitting functional layer are not directly to be contacted with transparency carrier, therefore,
Light emitting functional layer produce heat can by first substrate layer it is dispersed go out, so as to improve colour wheel mould
The heat dispersion of group, it is to avoid because radiating is concentrated and colour wheel module bursts caused by thermal expansion is uneven
Phenomenon, and the luminous efficiency of luminescent layer can be improved.
Another embodiment of the present invention provide a kind of light source module, as shown in figure 8, including excitation source 1,
Colour wheel module 2, at least one first blooming pieces 3, at least one second blooming pieces 4 and collecting lens
5。
Wherein, excitation source 1 is used to launch exciting light, it is preferred that excitation source 1 is single laser
Or the laser array that multiple lasers are constituted, such as semiconductor laser, the exciting light of its transmitting is indigo plant
Laser or Ultra-Violet Laser, illustrate in the present embodiment by taking blue laser as an example.
Colour wheel module 2 is the colour wheel module that as above any embodiment is provided, the light emitting module of the colour wheel module
Be sequentially located in the light path of exciting light, and under the irradiation of exciting light outgoing respective color light beam.As being somebody's turn to do
The light emitting module of colour wheel module can include red light-emitting module, green luminescence module and blue light emitting module,
Under the driving effect of drive device, red light-emitting module, green luminescence module and blue light emitting module according to
In the secondary light path positioned at exciting light, and under the irradiation of exciting light, red light-emitting module transmitting feux rouges, green
Light light emitting module transmitting green glow, blue light emitting module transmitting blue light.
First blooming piece 3 is located between excitation source 1 and colour wheel module 2, for transmiting exciting light,
And reflex on the second blooming piece 4 light beam of light emitting module outgoing.Specifically, the first blooming piece 3
It is the diaphragm of other light of the blue laser reflection of transmission.Second blooming piece 4 is used for the light of light emitting module outgoing
Beam is reflexed in corresponding filtration module, so that filtration module is repaired to Stimulated Light.
When the exciting light of the transmitting of excitation source 1 is blue light, red light-emitting module can include first substrate
Layer and reflecting layer and the Red phosphor layer of first substrate layer surface are sequentially located at, green luminescence module can
Including first substrate layer and to be sequentially located at reflecting layer and the green phosphor layer of first substrate layer surface,
Blue light emitting module can include first substrate layer and positioned at the reflecting layer of first substrate layer surface.Wherein,
Red fluorescence powder absorbs outgoing feux rouges after exciting light, and green emitting phosphor absorbs outstanding green glow after exciting light, instead
Penetrate layer and do not absorb exciting light but by exciting light i.e. blu-ray reflection to the first blooming piece 3, with feux rouges
Synthesize white light with green glow.Certainly, in other embodiments, blue light emitting module can only include reflecting layer,
First substrate layer can also be included and reflecting layer and the blue-fluorescence point of first substrate layer surface is sequentially located at
Layer, the present invention is not limited to this.
In the present embodiment, the position of the first blooming piece 3 and the second blooming piece 4 is fixed, in colour wheel mould
Group rotate during, when a light emitting module is turned in the light path of exciting light, i.e., the light emitting module position
When the lower section of the first blooming piece 3, the second blooming piece 4 also is located under its corresponding filtration module
Side, so that the light beam of filtration module finishing correspondence light emitting module transmitting.
Certainly, in other embodiments, it is also possible to one first blooming piece 3 is fixed on each light emitting module,
During one second blooming piece 4, and color section module rotation are fixed in each filtration module, the first light
Learning diaphragm 3 can rotate with corresponding light emitting module, and the second blooming piece 4 can turn with corresponding filtration module
It is dynamic.
In the present embodiment, collecting lens 5 is located at colour wheel module has the back side of light emitting module one side, and receives
The position for collecting lens 5 is corresponding with the position of filtration module, is collected so as to collecting lens 5 and passes through filtration module
And the light beam of transparency carrier.The light beam that collecting lens 5 is collected can be transmitted into follow-up modulating device,
To carry out the projection of image.
In light source module shown in Fig. 8, light emitting module and filtration module are located in being rotated with transparency carrier 10
The heart is that in the same sector region in the center of circle, can cause that the radius size of colour wheel module is smaller.In other realities
Apply in example, when the radius size of colour wheel module is larger, the corresponding light emitting module of filtration module is located at
In different sector regions with the pivot of transparency carrier 10 as the center of circle, as shown in Figure 9.
In the light source module shown in Fig. 8 and Fig. 9, light emitting module and filtration module are located at transparency carrier
Same surface, but, the present invention is not limited to this, in other embodiments, filtration module and luminous
Module can respectively positioned at two surfaces of transparency carrier, and equally, filtration module and light emitting module can be with positions
In in the same sector region with the pivot of transparency carrier 10 as the center of circle, as shown in Figure 10, optical filtering mould
The corresponding light emitting module of block is located at the different sector regions with the pivot of transparency carrier 10 as the center of circle
It is interior, as shown in figure 11.
The optics module that the present embodiment is provided, filter layer and luminescent layer are respectively positioned on the surface of transparency carrier, and
Filter layer is located at the inner side and outer side of luminescent layer, and the light that can launch light emitting module by blooming piece
Reflex to and repaired in corresponding filtration module, such that it is able to reduce the hold assembly of fixed optical filter,
The structure of colour wheel module is simplified, the volume and weight of colour wheel module, and colour wheel module is reduced not by upper
The size limitation of the optical filter of side, its size can do more.
Also, due to light emitting module include first substrate layer and positioned at the first substrate layer surface extremely
Few One function layer, i.e., light emitting functional layer is not directly to be contacted with transparency carrier, therefore, light emitting functional layer
The heat of generation can by first substrate layer it is dispersed go out, so as to improve the thermal diffusivity of colour wheel module
Can, it is to avoid due to the phenomenon that radiating is concentrated and colour wheel module bursts caused by thermal expansion is uneven, and
The luminous efficiency of luminescent layer can be improved.
Another embodiment of the present invention provide a kind of optical projection system, including as above any embodiment provide
Light source module.
Each embodiment is described by the way of progressive in this specification, and each embodiment is stressed
The difference with other embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses this hair
It is bright.Various modifications to these embodiments will be apparent for those skilled in the art,
Generic principles defined herein can without departing from the spirit or scope of the present invention, at it
Realized in its embodiment.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and
It is to fit to the most wide scope consistent with principles disclosed herein and features of novelty.