CN105867057A - Light source system, wavelength conversion device and related projection system - Google Patents
Light source system, wavelength conversion device and related projection system Download PDFInfo
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- CN105867057A CN105867057A CN201610216326.7A CN201610216326A CN105867057A CN 105867057 A CN105867057 A CN 105867057A CN 201610216326 A CN201610216326 A CN 201610216326A CN 105867057 A CN105867057 A CN 105867057A
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- wave length
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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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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
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Abstract
The embodiment of the invention discloses a light source system, a wavelength conversion device and a related projection system. The light source system comprises an excitation light source and a wavelength conversion device, wherein the excitation light source is used for generating an excitation light; the excitation light enters the wavelength conversion device; the wavelength conversion device comprises a microstructure array; the microstructure array comprises a plurality of microstructure bodies which are in a projection form; each microstructure body comprises a wavelength conversion material; the distance between any two adjacent microstructure bodies is greater than zero; scattering surfaces coat the microstructure bodies; the undulating surface of the microstructure array faces the incident excitation light; and a light spot, of the excitation light, formed on the wavelength conversion device covers at least one part of one microstructure body and also covers at least one part of the scattering surface between the microstructure body and one adjacent microstructure body, so that the excitation light is scattered through the scattering surface, mixed with excited light and emitted. The light source system which is efficient and emits hybrid light of the excitation light and the excited light can be provided.
Description
The present invention is based on Application No. 201210395090.X, invention entitled light-source system, ripple
Long conversion equipment and relevant projecting system, the patent application in filing date on October 17th, 2012
Division.
Technical field
The present invention relates to illumination and Display Technique field, particularly relate to a kind of light-source system, wavelength
Conversion equipment and relevant projecting system.
Background technology
In the light-emitting device of illuminator of the prior art or optical projection system, frequently with exciting light
Excite to produce Stimulated Light to material for transformation of wave length.But due to each material for transformation of wave length particle
During being stimulated, owing to its wavelength conversion efficiency is unlikely to be 100%, wherein lost
Energy be converted to heat, this accumulation of heat having resulted in material for transformation of wave length particle and temperature
The rapid increase of degree, directly affects luminous efficiency and the service life of material for transformation of wave length.
A kind of conventional solution is, drives material for transformation of wave length to move by driving means, makes
The hot spot that formed on material for transformation of wave length of exciting light acts on this wavelength convert by predefined paths
Material.So, the material for transformation of wave length in unit are will not be constantly under the irradiation of exciting light,
To reduce the accumulation of the heat of the material for transformation of wave length in unit are.
But, along with illuminator and optical projection system to the requirement of the luminous power of emergent light increasingly
Height, the luminous power of exciting light improves the most therewith.When the optical power density of exciting light is the highest, wavelength
The light conversion efficiency of transition material is the lowest；When the luminous power of exciting light reaches to a certain degree, wavelength
Transition material can occur the light conversion efficiency of quenching effect, i.e. material for transformation of wave length drastically to decline.
Summary of the invention
The technical problem that present invention mainly solves be to provide a kind of efficiently and outgoing exciting light be excited
The light-source system of the mixed light of light.
The embodiment of the present invention provides a kind of light-source system, including the excitation source for producing exciting light
And Wavelength converter, this exciting light is incident in this Wavelength converter, this Wavelength converter bag
Include:
Micro structure array, including multiple microstructured bodies, each microstructured bodies is column, coniform, rib
Taper, round table-like, prism-frustum-shaped, prism-shaped or surface are the protrusion shape of other curved surfaces, wherein
Each microstructured bodies includes material for transformation of wave length, the spacing between two microstructured bodies of arbitrary neighborhood
More than zero, and between each microstructured bodies, all it is covered with scattering surface；
Described micro structure array has the one side exciting light towards described incidence of fluctuating, and described sharp
The luminous hot spot formed on described Wavelength converter covers at least part of of a microstructured bodies,
Producing Stimulated Light to excite the material for transformation of wave length in microstructured bodies, this hot spot also covers
Scattering surface between this microstructured bodies with adjacent microstructured bodies at least part of, so that described
Exciting light mixes with this Stimulated Light and outgoing after this scattering surface scatters.
The embodiment of the present invention also provides for a kind of Wavelength converter, including:
Micro structure array, including multiple microstructured bodies, each microstructured bodies is column, coniform, rib
Taper, round table-like, prism-frustum-shaped, prism-shaped or surface are the protrusion shape of other curved surfaces, wherein
Each microstructured bodies includes material for transformation of wave length, the spacing between two microstructured bodies of arbitrary neighborhood
More than zero, and between each microstructured bodies, all it is covered with scattering surface.
The embodiment of the present invention also provides for a kind of optical projection system, including above-mentioned light-source system.
Compared with prior art, the present invention includes following beneficial effect:
The present invention by material for transformation of wave length being set to multiple microstructured bodies, and each microstructured bodies in
Coniform, pyramid-shaped, round table-like, prism-frustum-shaped, column or surface are the protrusion of other curved surfaces
Shape, micro structure array has the one side of fluctuating towards described exciting light so that along being parallel to micro-knot
In the bearing of trend of structure array, the material for transformation of wave length receiving exciting light in unit plane area
Surface area increases, and compares that one overall and surface is the wavelength conversion layer of plane, medium wave of the present invention
The optical power density that material for transformation of wave length in long conversion equipment receives declines, and then light conversion effect
Rate improves；Simultaneously as the spacing between the two of arbitrary neighborhood microstructured bodies is more than zero, and respectively
Scattering surface all it is covered with so that part exciting light is not used for exciting and being scattered face between microstructured bodies
The Stimulated Light produced with material for transformation of wave length after scattering combines light into another color of light.
Accompanying drawing explanation
Figure 1A is the structural representation of an embodiment of the light-source system of the present invention；
Figure 1B is the structural representation of the Wavelength converter in the light-source system shown in Figure 1A；
Fig. 1 C is the stereogram of another embodiment medium wavelength conversion equipment of the light-source system of the present invention；
Fig. 1 D is the side-looking of another embodiment medium wavelength conversion equipment of the light-source system of the present invention
Figure；
Fig. 2 A is the signal of an embodiment of the light channel structure in the light-source system shown in Figure 1A
Figure；
Fig. 2 B is the signal of another embodiment of the light channel structure in the light-source system shown in Figure 1A
Figure；
Fig. 3 is the structural representation of another embodiment of the light-source system of the present invention；
Fig. 4 is the structural representation of another embodiment of the light-source system of the present invention.
Detailed description of the invention
With embodiment, the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment one
Refer to the structural representation of an embodiment that Figure 1A, Figure 1A are the light-source systems of the present invention
Figure.Light-source system 100 includes excitation source 101 and Wavelength converter 11.
Wavelength converter 11 includes micro structure array 103.Micro structure array includes multiple micro-structural
Body 103a, the most each microstructured bodies 103a include material for transformation of wave length, are used for absorbing a kind of ripple
The light of long scope the light of outgoing another kind wave-length coverage.Conventional material for transformation of wave length includes fluorescence
Powder.Material for transformation of wave length is it is also possible that quantum dot, fluorescent dye etc. have the material of wavelength conversion capability
Material, however it is not limited to fluorescent material.As shown in Figure 1B, during Figure 1B is the light-source system shown in Figure 1A
The structural representation of Wavelength converter.In the present embodiment, each microstructured bodies 103a is Rhizoma Sparganii
Taper, and the array arrangement that is square.Spacing between two microstructured bodies of arbitrary neighborhood is more than zero,
And it is equipped with scattering surface 107 between each microstructured bodies.Micro structure array 103 has the one of fluctuating
Face is towards excitation source 101.
Excitation source 101 is used for producing exciting light L1, with to the wavelength in Wavelength converter 103
Transition material carries out exciting and then producing Stimulated Light.Conventional excitation source has LED light source, laser
Light source or other solid luminescent light sources.
The hot spot that exciting light L1 is formed on Wavelength converter 11 covers a microstructured bodies 103a
At least part of, produce be excited so that the material for transformation of wave length in this microstructured bodies excited
Light；This hot spot also covers the scattering surface 107 between this microstructured bodies with adjacent microstructured bodies
At least part of, so that described exciting light is not absorbed by material for transformation of wave length and directly by this scattering surface
107 scatterings.The exciting light portions incident being scattered to microstructured bodies with to the ripple in this microstructured bodies
Long transition material excites, and remaining exciting light is not used for exciting but directly mixes with Stimulated Light
Rear outgoing, so that this Wavelength converter outgoing Stimulated Light and mixing of unabsorbed exciting light
Light.Outgoing is mixed with Stimulated Light again so that these two kinds after being scattered face 107 scattering due to exciting light
Light mixes more uniform.
Wavelength converter 11 also includes substrate 105, and this substrate includes relative first surface 105a
With second surface 105b.Micro structure array 103 is arranged on this first surface 105a.Corresponding
Ground, in micro structure array 103, the scattering surface 107 between each microstructured bodies can be by by substrate 105
Realize corresponding to the rough surface in region between each micro-structural, or right in substrate 105
Scattering material should be set on the surface in region between each micro-structural or other diffusing structures come real
Existing.
Substrate can use some Heat Conduction Materials to make, such as aluminium, to reduce micro structure array 103
Operating temperature, and then improve the working life of Wavelength converter 11.The present embodiment is by by ripple
Long transition material is set to multiple microstructured bodies, and each microstructured bodies is Rhizoma Sparganii taper so that on edge
It is parallel in the bearing of trend of micro structure array, the wavelength receiving exciting light in unit plane area
The surface area of transition material increases, and compares that one is overall and surface is the wavelength conversion layer of plane,
The optical power density that material for transformation of wave length in medium wavelength conversion equipment of the present invention receives declines, and enters
And light conversion efficiency improves.
In the present embodiment, each microstructured bodies 103a can also pyramid-shaped in other shapes, such as four
Pyramid.Or, each microstructured bodies 103a can also in column, coniform, round table-like, prism-frustum-shaped,
Prism-shaped or surface are the protrusion shape of other curved surfaces, or the group of above different microstructured bodies
Close.The shape of these microstructured bodies enumerated can make along being parallel to prolonging of micro structure array
Stretching in direction, the surface area of the material for transformation of wave length receiving exciting light in unit plane area increases
Greatly, so improve material for transformation of wave length light conversion efficiency.
Refer to another embodiment medium wavelength conversion that Fig. 1 C, Fig. 1 C is the light-source system of the present invention
The stereogram of device.As shown in Figure 1 C, in place of the difference of the present embodiment and embodiment illustrated in fig. 1
Be: each microstructured bodies 12 in the micro structure array in the present embodiment in triangular prism shape, each three
Prism is parallel to each other side by side, extends arrangement toward same direction.
Refer to another embodiment medium wavelength conversion that Fig. 1 D, Fig. 1 D is the light-source system of the present invention
The side view of device.As shown in figure ip, in place of the difference of the present embodiment and embodiment illustrated in fig. 1
Being: in the present embodiment, each microstructured bodies 13 in micro structure array is in flat column, the most each micro-
Structure 13 is being square along the cross section being parallel on the direction that micro structure array extends.With in
Unlike the microstructured bodies of other shapes, including the micro-structural battle array of the microstructured bodies in column
In row, mainly increased the surface of the material for transformation of wave length receiving exciting light by the side of cylinder
Long-pending.Owing to, in practice, exciting light can not accomplish the most parallel collimation vertical incidence
In Wavelength converter, therefore, part exciting light is had to incide the side of the microstructured bodies in column
And then excite.
For understanding how the light-source system of the present invention works, illustrate in detail below.Such as figure
Shown in 2A, Fig. 2 A is an embodiment of the light channel structure in the light-source system shown in Figure 1A
Schematic diagram.In the present embodiment, excitation source (not shown) is used for producing blue excitation light L1.
Micro structure array 103 in Wavelength converter 11 includes yellow fluorescent powder, is used for absorbing blue light
And produce yellow Stimulated Light L2.Wavelength converter 11 is reflective, i.e. exciting light L1 and being subject to
The light path of laser L2 is respectively positioned on the same side of this Wavelength converter 11, so can make light loss more
Few.Accordingly, a reflecting layer can be set on the first surface 105a of substrate 105.Due to glimmering
Light powder luminescence is that full-shape is luminous, meets to the then directly outgoing of yellow Stimulated Light L2 of excitation source outgoing,
Meet Stimulated Light L2 of basad 105 outgoing meet after the reflecting layer on first surface 105a is reflected to
Excitation source outgoing.And be scattered face 107 scatter and on first surface 105a reflecting layer reflection
Blue excitation light L1 also meet to excitation source outgoing, and be mixed into white light with yellow Stimulated Light.
For improving the utilization rate of the material for transformation of wave length in microstructured bodies, it is preferable that substrate 105 by
Light transmissive material is made, and reflecting surface is arranged on the second surface 105b of substrate 105.So,
The exciting light not absorbed by micro structure array and the part exciting light being scattered face 107 transmission enter base
It is reflected back micro structure array 103 by second surface 105b at the end 105.This is reflected back micro structure array
The exciting light part of 103 is scattered face 107 scattering transmission outgoing, and another part is reflected onto
The bottom surface of micro structure array 103, i.e. micro structure array 103 and the first surface 105a of substrate 105
The one side contacted, and excite to produce Stimulated Light to the bottom surface of micro-structural 103.
Certainly, in practice, Wavelength converter 11 can also be transmission-type.Such as figure
Shown in 2B, Fig. 2 B is another embodiment of the light channel structure in the light-source system shown in Figure 1A
Schematic diagram.In the present embodiment, substrate 105 is made up of light transmissive material, such as glass.Micro-structural
Yellow Stimulated Light L2 transmitted through substrate 105 that yellow fluorescent powder in array 103 produces from base
The second surface 105b outgoing at the end 105.Part exciting light be scattered face 107 scattering after transmitted through
Substrate 105 from the second surface 105b outgoing of substrate 105, and mix with yellow Stimulated Light L2
Become white light.In the present embodiment, owing to the full-shape of fluorescent material is luminous, part yellow Stimulated Light can be caused
From Wavelength converter 11 towards the side outgoing of excitation source, part light is caused not to be collected into
And lose.Therefore, can place in the light path that exciting light L1 is incident in Wavelength converter 11
Optical filter, for transmission exciting light and reflect Stimulated Light, to improve the collection rate of light beam.Certainly,
It not the highest occasion to brightness requirement, it is also possible to do not use this optical filter.
Embodiment two
Refer to the structural representation of another embodiment that Fig. 3, Fig. 3 are the light-source systems of the present invention
Figure.In the present embodiment, light-source system 300 includes excitation source 301 and Wavelength converter 33.
Wavelength converter 33 includes micro structure array 303 and substrate 305.Unlike embodiment one,
Substrate 305 in the present embodiment is made up of light transmissive material, and micro structure array 303 is arranged at substrate
In 305.
Substrate 305 includes first surface 305a and the second surface relative with first surface 305a
305b, wherein first surface 305a is for receiving the exciting light L1 from excitation source 301.Micro-
Array of structures 303 has the one side of fluctuating towards this first surface 305a, and this micro structure array 303
Bearing of trend be parallel to this first surface 305a.
Compare embodiment one, each microstructured bodies 303a and base in micro structure array 303 in the present embodiment
The contact area at the end 305 is bigger, the more conducively heat radiation of micro structure array 303.
In the present embodiment, Wavelength converter 33 can be transmission-type, it is also possible to be reflection
Formula, the light channel structure of the rwo is analogous respectively to the transmission-type described in embodiment one and reflection
Light channel structure in the Wavelength converter of formula, the most identical part does not repeats them here.But phase
Ratio transmission-type Wavelength converter described in embodiment one, can be at first surface in the present embodiment
Filter coating it is coated with, for transmission exciting light and reflect Stimulated Light, to improve the collection of light beam on 305a
Rate.Further, it is also possible to this filter coating is set to reflect the exciting light of large angle incidence, makes
With wide-angle from the first of this substrate 305 in the part exciting light that must be reflected by micro structure array 303
The part of surface 305a outgoing is reflected back micro structure array 303 again by this filter coating, swashs to improve
Luminous utilization rate.
In the present embodiment, scattering surface between each microstructured bodies 303a in micro structure array 303
307 can be by arranging scattering material or diffusing structure realizes between each microstructured bodies.Such as,
Can by by the second surface 305b of substrate 305 corresponding to the surface in region between each micro-structural
Roughening realizes.
Embodiment three
Refer to the structural representation of another embodiment that Fig. 4, Fig. 4 are the light-source systems of the present invention
Figure.Light-source system 400 includes excitation source (not shown) and Wavelength converter 44.Wavelength turns
Changing device 44 includes wavelength conversion layer 403.Unlike above example, in the present embodiment
Micro structure array in Wavelength converter 44 is not arranged in substrate or in substrate, but
Directly it is formed such as embodiment one and two institute on the side of excitation source at wavelength conversion layer 403
The micro structure array described.Compare above example, owing to carrying without substrate in the present embodiment
This wavelength conversion layer, and then cost can be reduced.
In the present embodiment, Wavelength converter 44 is reflective, and each microstructured bodies is post
Shape.Can be real by being coated with reflectance coating on the opposite side of wavelength conversion layer 403 excitation source dorsad
Existing.Certainly, Wavelength converter 44 can also by be arranged on speculum realize reflective
Structure.
Corresponding, scattering surface 407 is set to scattered reflection face, can be by first at each microstructured bodies
Between plate reflectance coating after be provided with scattering material again or diffusing structure realizes.Certainly, if
Scattering is realized, owing to scattering material is to light beam by arranging scattering material between each microstructured bodies
There is partially reflective effect, when the thickness that scattering material is arranged is sufficiently large, it is also possible to realize scattering anti-
The effect penetrated, i.e. need not first plate reflectance coating between each microstructured bodies, and directly arranges scattering
Material.Certainly, in practice, if the amount needing exciting light is less, due to scattering
Material has partially reflective effect to light beam, and scattering material can also be accomplished to reflect whole light
The thickness of bundle, as long as there being segment beam to obtain reflecting.And exciting transmitted through this scattering material
Stimulated Light and unabsorbed exciting light that light produces after exciting material for transformation of wave length can be by wavelength
Reflectance coating reflection on the opposite side of conversion layer 403 excitation source dorsad, and from wavelength convert aspect
To the side outgoing of excitation source.Light channel structure in the present embodiment and the reflection in above example
Light channel structure in formula Wavelength converter is similar, does not repeats them here.
Bigger for receiving the surface area of exciting light for making on micro structure array on each microstructured bodies, excellent
Selection of land, it is average that the average height of each microstructured bodies is more than between two microstructured bodies of arbitrary neighborhood
The half of spacing.
In various embodiments above, for synthesizing exciting light and the ratio of Stimulated Light of mixing emergent light
Difference, the chromaticity coordinates that can cause its mixing emergent light synthesized is different.In Wavelength converter
Concentration one timing of micro structure array medium wavelength transition material, exciting light and being subject in the mixed light of outgoing
It is each micro-that the ratio of laser is decided by that the hot spot that exciting light is formed on Wavelength converter is covered
The ratio of the surface area of structure and the surface area of scattering surface covered；It is easily understood that work as
When micro-structural is sufficiently small, this ratio be similar in micro structure array the surface area of each microstructured bodies with
The ratio of the surface area of scattering surface.Owing to the ratio of the exciting light composition in mixing emergent light is by scattering
The surface area in face accounts for the ratio of the micro structure array gross area and determines, the ratio of Stimulated Light composition is by each micro-
The surface area of structure accounts for the ratio of the micro structure array gross area and determines；Therefore, can as required
The chromaticity coordinates of mixing emergent light determines the ratio of exciting light and Stimulated Light, and then determines micro-structural battle array
The ratio of the surface area of the surface area of each microstructured bodies and scattering surface in row, so that final light source system
The chromaticity coordinates of the mixed light of system outgoing reaches the chromaticity coordinates needed in advance.
In various embodiments above, excitation source and Wavelength converter are geo-stationary.In reality
During border uses, it would however also be possible to employ driving means drives Wavelength converter motion so that exciting light exists
The hot spot formed on Wavelength converter presses predefined paths motion.So, wavelength can be improved further
The heat-sinking capability of conversion equipment.Such as, motor can be used to drive Wavelength converter to rotate, so that
The hot spot that formed on Wavelength converter of exciting light acts on micro-knot by circular path periodicity
Structure array.
Further, light-source system can also include controlling device, and micro structure array includes at least
Two zoness of different, the wherein surface area of each micro-structural on these two regions and the surface of scattering surface
Long-pending ratio is different, and the corresponding different mixing emergent light of the different proportion in zones of different is pre-
Fixation coordinate.When needing the chromaticity coordinates changing mixing emergent light, control device and send control signal
To driving means, wherein this control signal includes type of drive.Driving means obtains this control signal,
And according to type of drive included in this control signal, Wavelength converter is driven, make
The motion path obtaining the hot spot that exciting light is formed on Wavelength converter is converted in presumptive area,
So that Wavelength converter outgoing meets the mixed light of predetermined color coordinate value.
For concrete example, in the present embodiment, driving means is used for driving the Wavelength converter cycle
Property rotate.Accordingly, each microstructured bodies in micro structure array can be arranged side by side in multiple endless parallel
Arrangement.In different rings, the spacing between each microstructured bodies is different, and i.e. the area of scattering surface is not
With.In the present embodiment, in the ring of outermost one circle, the spacing between each microstructured bodies is maximum.Edge
Direction radially, in different rings, the spacing between each microstructured bodies is gradually reduced, the most inner
The area of the scattering surface in ring is the least, then the ratio of the mixed light that exciting light accounts for outgoing is the least, is excited
The ratio of the mixed light that light accounts for outgoing is the biggest.When changing the chromaticity coordinates of mixed light of outgoing, if needing
Increase the ratio that exciting light accounts for the mixed light of outgoing, then control device and send a control signal to drive dress
Put so that driving means drives Wavelength converter motion, to change exciting light at micro structure array
The position of the hot spot of upper formation, be allowed to along the center of circle radially carrying micro structure array direction outward
Ring moves.If the ratio that Stimulated Light accounts for the mixed light of outgoing need to be increased, control device and send control letter
Number to driving means so that driving means drives Wavelength converter motion, so that the position of hot spot
The center of circle radially towards micro structure array is moved toward inner ring.
Described above simply to the micro-knot in micro structure array in the zones of different of Wavelength converter
The citing that the surface area of structure body is different from the ratio of the surface area of scattering surface, does not limit it.?
In practice, it is also possible to the spacing being in the ring of outermost one circle between each microstructured bodies is
Little；And along direction radially, in different rings, the spacing between each microstructured bodies is gradually increased, i.e.
The area of the most inner scattering surface in ring is the biggest, then the ratio of the mixed light that exciting light accounts for outgoing is got over
Greatly, the ratio of the mixed light that Stimulated Light accounts for outgoing is the least.
Or, in micro structure array, each microstructured bodies is square array distribution, wherein this square array
In every a line in each microstructured bodies be uniformly distributed, the surface area of the most each microstructured bodies is consistent and each micro-
The surface area of the scattering surface between structure is consistent；And in different rows the surface area of each microstructured bodies with
The ratio of the surface area of scattering surface is different.Such as, edge is perpendicular to the direction of each row, each in different rows
The surface area of microstructured bodies is gradually reduced with the ratio of the surface area of scattering surface.Accordingly, drive
Device is linear translation device so that hot spot the most linearly path acts in this micro structure array
Certain a line.When the chromaticity coordinates of mixed light of outgoing need to be changed, control to drive by controlling device
Device, to change the row at the hot spot place that exciting light is formed on Wavelength converter.Certainly, exist
In the present embodiment, can also uneven point with microstructured bodies each in a line in square micro structure array
Cloth, as long as make to move in hot spot a line wherein that exciting light formed on Wavelength converter
The mean color coordinates of produced mixing emergent light blends with produced when other row move
Penetrate the mean color coordinates difference of light.
For realizing more accurately changing the chromaticity coordinates of mixing emergent light, light-source system can also enter one
Step includes detecting device, for what the chromaticity coordinates of mixing emergent light was detected and this detected
Chromaticity coordinates feeds back to user or controls device.If feeding back to user, then user can be according to detecting
The gap of chromaticity coordinates and predetermined color coordinate carry out Non-follow control and control device to control driving means, make
The hot spot that formed on Wavelength converter of exciting light moves toward precalculated position.If feeding back to control
Device, then control device and can predefine predetermined color coordinate, and calculate the chromaticity coordinates that detects with
The gap of predetermined color coordinate, when this gap is beyond predetermined threshold, controls device and sends out to driving means
Sending control signal, driving means drives Wavelength converter to move according to this control signal so that
The hot spot that exciting light is formed on Wavelength converter moves to making the chromaticity coordinates detected with pre-
The position that fixation coordinate is consistent.
For concrete example, in the present embodiment, blue excitation light and yellow Stimulated Light are mixed into white
Light outgoing.Owing to chromaticity coordinates and the colour temperature of white light can mutually convert, for ease of calculating, detection dress
Put the colour temperature for detecting white light.Control what the pre-set Wavelength converter of device moved every time
Amplitude, in the present embodiment, this amplitude is amplitude D0 that wavelength conversion layer radially translates, and
And the colour temperature presetting white light is S1, predetermined threshold is S0.
The optical signal of the white light of detection Wavelength converter outgoing, and obtain this white light
Colour temperature, is recorded as S2.This colour temperature is fed back to control device by detection device.Control device first in advance
The difference of fixation temperature S1 and actual colour temperature S2 judges.If the difference of S1 and S2 is less than S0,
Then control device and there is no action.If the difference of S1 and S2 is more than or equal to S0, then control device pair
The size of S1 and S2 judges.If S1 is more than S2, then controls device and send to driving means
Control signal, makes driving means drive Wavelength converter toward the direction translation one increasing colour temperature S2
Secondary, the amplitude of translation is predetermined amplitude D0.If S1 is less than S2, then control device to driving means
Send control signal, make driving means drive Wavelength converter to put down toward the direction reducing colour temperature S2
Moving once, the amplitude of translation is predetermined amplitude D0.After Wavelength converter translation, detect device
Detect optical signal again, and obtain the new colour temperature of white light, be recorded as S3.Detection device is by anti-for this colour temperature
It is fed to control device.Control device first the difference of predetermined colour temperature S1 He actual colour temperature S3 to be sentenced
Fixed.With this reciprocally, during until the difference of actual colour temperature and predetermined colour temperature S1 is less than pre-established threshold S0,
Control device and stop the driving means driving to Wavelength converter.So so that the colour temperature of white light
Regulation reach automation, and more accurate.
Additionally, control device and can also pre-set mapping table.This mapping table is contained within reality
The different range of the difference of colour temperature and predetermined colour temperature, and the driving side corresponding to variant difference range
Formula, this type of drive includes amplitude and the direction driving Wavelength converter motion.When detection device
The actual colour temperature detected is sent to controlling device, controls device and first judge that this actual colour temperature is with pre-
Whether the difference of fixation temperature is beyond predetermined threshold.If this difference is without departing from predetermined threshold, then control dress
Put and there is no action.When this difference is beyond predetermined threshold, controls device from mapping table, obtain this difference
Type of drive corresponding to value also produces control signal, and send this control signal to driving means,
This control signal includes type of drive, i.e. drives direction and the amplitude of Wavelength converter motion.Drive
Wavelength converter is driven by dynamic device according to the type of drive in control signal so that wavelength
Conversion equipment moves according to predetermined amplitude and direction.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses
Be all the difference with other embodiments, the mutual coherent of identical similar portion between each embodiment
See.
The embodiment of the present invention also provides for a kind of optical projection system, and including light-source system, this light-source system can
To have the structure in the various embodiments described above and function.This optical projection system can use various projection skill
Art, such as liquid crystal display (LCD, Liquid Crystal Display) shadow casting technique, digital light
Path processor (DLP, Digital Light Processor) shadow casting technique.Additionally, above-mentioned luminous dress
Put and can also be applied to illuminator, such as stage lighting illumination.
The foregoing is only embodiments of the present invention, not thereby limit the patent model of the present invention
Enclosing, every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process become
Change, or be directly or indirectly used in other relevant technical fields, be the most in like manner included in the present invention's
In scope of patent protection.
Claims (7)
1. a light-source system, including excitation source and Wavelength converter, it is characterised in that:
Described excitation source is used for producing blue excitation light；
Described Wavelength converter includes reflecting layer, substrate and the material for transformation of wave length set gradually；
Described Wavelength converter arranges the side of material for transformation of wave length towards exciting light, described wavelength
Transition material is arranged in the light path of described exciting light；
Described substrate is made up of light transmissive material, and exciting light is incident on material for transformation of wave length not by wavelength
The exciting light that transition material absorbs, transmitted through described substrate, is reflected back wavelength convert material by reflecting layer
Material.
Light-source system the most according to claim 1, it is characterised in that described substrate includes
First surface and second surface, side, described second surface place arranges reflecting layer, and first surface side sets
Putting material for transformation of wave length, wherein, described first surface is made scattered at least partially by rough surface
Penetrate face.
Light-source system the most according to claim 1, it is characterised in that described substrate includes
First surface and second surface, side, described second surface place arranges reflecting layer, described first surface
It is oppositely arranged with described second surface, is provided with scattered between described first surface and material for transformation of wave length
Penetrate material or scattering layer that diffusing structure is made.
Light-source system the most according to any one of claim 1 to 3, it is characterised in that
Described material for transformation of wave length is yellow fluorescent powder.
Light-source system the most according to claim 1, described material for transformation of wave length makes micro-knot
Structure array, the spacing between two micro-structurals of described arbitrary neighborhood is more than zero.
Light-source system the most according to claim 5, two micro-structurals of described arbitrary neighborhood it
Between scattering surface is set, for the light scattering exciting light and/or material for transformation of wave length sends.
7. an optical projection system, it is characterised in that include institute any one of claim 1 to 6
The light-source system stated.
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| CN201210395090.XA CN103777447B (en) | 2012-10-17 | 2012-10-17 | A kind of light-source system, Wavelength converter and relevant projecting system |
| CN201610216326.7A CN105867057B (en) | 2012-10-17 | 2012-10-17 | Light-source system, Wavelength converter and relevant projecting system |
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| CN105867057B (en) | 2018-03-20 |
| CN103777447A (en) | 2014-05-07 |
| CN103777447B (en) | 2016-03-16 |
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