CN105867057B - Light-source system, Wavelength converter and relevant projecting system - Google Patents

Light-source system, Wavelength converter and relevant projecting system Download PDF

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Publication number
CN105867057B
CN105867057B CN201610216326.7A CN201610216326A CN105867057B CN 105867057 B CN105867057 B CN 105867057B CN 201610216326 A CN201610216326 A CN 201610216326A CN 105867057 B CN105867057 B CN 105867057B
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CN
China
Prior art keywords
light
surface
material
wavelength converter
transformation
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CN201610216326.7A
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Chinese (zh)
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CN105867057A (en
Inventor
胡飞
李屹
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深圳市光峰光电技术有限公司
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Priority to CN201610216326.7A priority Critical patent/CN105867057B/en
Priority to CN201210395090.XA priority patent/CN103777447B/en
Publication of CN105867057A publication Critical patent/CN105867057A/en
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Publication of CN105867057B publication Critical patent/CN105867057B/en

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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2033LED or laser light sources
    • G03B21/204LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence

Abstract

The embodiment of the invention discloses a kind of light-source system, Wavelength converter and relevant projecting system, the light-source system includes being used for the excitation source and Wavelength converter for producing exciting light, and the exciting light is incident in the Wavelength converter, and the Wavelength converter includes:Micro structure array, including multiple microstructured bodies in protrusion shape, wherein each microstructured bodies include material for transformation of wave length, the spacing between two microstructured bodies of arbitrary neighborhood is more than zero and is covered with scattering surface;The micro structure array has the one side to rise and fall towards the incident exciting light, and the hot spot that is formed on the Wavelength converter of the exciting light covers at least part of a microstructured bodies, at least part of the scattering surface between the microstructured bodies and adjacent microstructured bodies is also covered, so that the exciting light is mixed and is emitted with the stimulated light after the scattering area scattering.The present invention can provide a kind of efficient and light-source system of outgoing exciting light and the mixed light of stimulated light.

Description

Light-source system, Wavelength converter and relevant projecting system

The present invention is to be based on Application No. 201210395090.X, entitled light-source system, Wavelength converter and Relevant projecting system, the applying date are the division of the patent application on October 17th, 2012.

Technical field

The present invention relates to illumination and display technology field, more particularly to a kind of light-source system, Wavelength converter and phase Close optical projection system.

Background technology

In the light-emitting device of illuminator or optical projection system of the prior art, frequently with exciting light to wavelength convert material Material is excited to produce stimulated light.But because each material for transformation of wave length particle is during being stimulated, due to its wavelength Conversion efficiency is unlikely to be 100%, wherein the energy lost is converted to heat, this has resulted in material for transformation of wave length particle The accumulation of heat and the rapid increase of temperature, directly affects the luminous efficiency and service life of material for transformation of wave length.

A kind of conventional solution method is to drive material for transformation of wave length to move by drive device so that exciting light is in ripple The hot spot formed on long transition material acts on the material for transformation of wave length by predefined paths.So, the wavelength in unit area turns Conversion materials 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 area.

But with the requirement more and more higher of illuminator and optical projection system to the luminous power of emergent light, the light of exciting light Power also improves therewith.When the optical power density of exciting light is higher, the light conversion efficiency of material for transformation of wave length is lower;When exciting When the luminous power of light is reached to a certain degree, the light conversion effect of quenching effect, i.e. material for transformation of wave length can occur for material for transformation of wave length Rate drastically declines.

The content of the invention

The present invention solves the technical problem of provide it is a kind of efficiently and outgoing exciting light and the mixed light of stimulated light Light-source system.

The embodiment of the present invention provides a kind of light-source system, including for producing the excitation source and wavelength convert dress of exciting light Put, the exciting light is incident in the Wavelength converter, and the Wavelength converter includes:

Micro structure array, including multiple microstructured bodies, each microstructured bodies are in the form of a column, are coniform, pyramid-shaped, round table-like, rib Mesa-shaped, prism-shaped or surface are in the protrusion shape of other curved surfaces, wherein each microstructured bodies include material for transformation of wave length, arbitrarily Spacing between two adjacent microstructured bodies is more than zero, and is covered with scattering surface between each microstructured bodies;

The micro structure array has the one side to rise and fall towards the incident exciting light, and the exciting light is in the ripple The hot spot formed on long conversion equipment covers at least part of a microstructured bodies, with to the material for transformation of wave length in microstructured bodies Excited and produce stimulated light, the hot spot also covers the scattering surface between the microstructured bodies and adjacent microstructured bodies At least partly, so that the exciting light is mixed and is emitted with the stimulated light after the scattering area scattering.

The embodiment of the present invention also provides a kind of Wavelength converter, including:

Micro structure array, including multiple microstructured bodies, each microstructured bodies are in the form of a column, are coniform, pyramid-shaped, round table-like, rib Mesa-shaped, prism-shaped or surface are in the protrusion shape of other curved surfaces, wherein each microstructured bodies include material for transformation of wave length, arbitrarily Spacing between two adjacent microstructured bodies is more than zero, and is covered with scattering surface between each microstructured bodies.

The embodiment of the present invention also provides 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 by being arranged to multiple microstructured bodies, and each microstructured bodies are in coniform, pyramid Shape, round table-like, prism-frustum-shaped, column or surface are in the protrusion shape of other curved surfaces, and micro structure array has the one side face to rise and fall To the exciting light so that along bearing of trend of the edge parallel to micro structure array, the reception exciting light in unit plane area Material for transformation of wave length surface area increase, compared to entirety and surface be plane wavelength conversion layer, 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 efficiency improves;Simultaneously as Spacing between two microstructured bodies of arbitrary neighborhood is more than zero, and is covered with scattering surface between each microstructured bodies so that portion Shunt excitation is luminous to be not used for exciting and is scattered after area scattering and stimulated light caused by material for transformation of wave length combines light into another color of light.

Brief description of the drawings

Figure 1A is the structural representation of one 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 are the stereograms of another embodiment medium wavelength conversion equipment of the light-source system of the present invention;

Fig. 1 D are the side views of another embodiment medium wavelength conversion equipment of the light-source system of the present invention;

Fig. 2A is the schematic diagram of one embodiment of the light channel structure in the light-source system shown in Figure 1A;

Fig. 2 B are the schematic diagrames of another embodiment of the light channel structure in the light-source system shown in Figure 1A;

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.

Embodiment

The embodiment of the present invention is described in detail with embodiment below in conjunction with the accompanying drawings.

Embodiment one

Figure 1A is referred to, Figure 1A is the structural representation of one embodiment of the light-source system of the present invention.Light-source system 100 Including excitation source 101 and Wavelength converter 11.

Wavelength converter 11 includes micro structure array 103.Micro structure array includes multiple microstructured bodies 103a, wherein often Individual microstructured bodies 103a includes material for transformation of wave length, for absorbing a kind of light of wave-length coverage and being emitted another wave-length coverage Light.Conventional material for transformation of wave length includes fluorescent material.Material for transformation of wave length is also possible to be that quantum dot, fluorescent dye etc. have wavelength The material of transfer capability, however it is not limited to fluorescent material.As shown in Figure 1B, Figure 1B is the wavelength convert in the light-source system shown in Figure 1A The structural representation of device.In the present embodiment, each microstructured bodies 103a is in triangular pyramid, and the array arrangement that is square.Arbitrarily Spacing between two adjacent microstructured bodies is more than zero, and scattering surface 107 is equipped between each microstructured bodies.Micro-structural battle array Row 103 have the one side to rise and fall towards excitation source 101.

Excitation source 101 is used to produce exciting light L1, to swash to the material for transformation of wave length in Wavelength converter 103 Send out and then produce 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 microstructured bodies 103a at least part, with Material for transformation of wave length in the microstructured bodies is excited and produces stimulated light;The hot spot also cover the microstructured bodies with it is adjacent A microstructured bodies between scattering surface 107 at least part so that the exciting light be not wavelength-converted material absorb and Directly scattered by the scattering surface 107.The exciting light portions incident being scattered is to microstructured bodies with to the wavelength in the microstructured bodies Transition material is excited, and remaining exciting light is not used for exciting but is emitted after directly being mixed with stimulated light, to cause the ripple The mixed light of long conversion equipment outgoing stimulated light and unabsorbed exciting light.Because exciting light is scattered after the scattering of face 107 again Outgoing is mixed with stimulated light so that two kinds of light mix more uniform.

Wavelength converter 11 also includes substrate 105, and the substrate includes relative first surface 105a and second surface 105b.Micro structure array 103 is arranged on first surface 105a.Accordingly, in micro structure array 103 each microstructured bodies it Between scattering surface 107 can be by the way that the surface roughening for corresponding to region between each micro-structural of substrate 105 be realized, Huo Zhe Scattering material or other diffusing structures are set to realize on the surface corresponding to region between each micro-structural of substrate 105.

Substrate can be made of some Heat Conduction Materials, such as aluminium, to reduce the operating temperature of micro structure array 103, and then Improve the working life of Wavelength converter 11.The present embodiment by the way that material for transformation of wave length is arranged into multiple microstructured bodies, and Each microstructured bodies are in triangular pyramid so that along bearing of trend of the edge parallel to micro structure array, connecing in unit plane area Receive the surface area increase of the material for transformation of wave length of exciting light, compared to entirety and surface be plane wavelength conversion layer, this The optical power density that material for transformation of wave length in invention medium wavelength conversion equipment receives declines, and then light conversion efficiency improves.

In the present embodiment, each microstructured bodies 103a can also be in the pyramid-shaped of other shapes, such as rectangular pyramid.Or respectively The projection that microstructured bodies 103a can also be in the form of a column, be coniform, be round table-like, prism-frustum-shaped, prism-shaped or surface are in other curved surfaces Thing shape, or the combination of different microstructured bodies above.The shape of these microstructured bodies enumerated can cause along parallel In in the bearing of trend of micro structure array, the surface area of the material for transformation of wave length of the reception exciting light in unit plane area increases Greatly, so improve material for transformation of wave length light conversion efficiency.

Fig. 1 C are referred to, Fig. 1 C are the stereograms of another embodiment medium wavelength conversion equipment of the light-source system of the present invention. As shown in Figure 1 C, it is in place of the difference of the present embodiment and embodiment illustrated in fig. 1:It is each in micro structure array in the present embodiment Microstructured bodies 12 are in triangular prism shape, and each triangular prism is parallel to each other side by side, toward the extension arrangement of same direction.

Fig. 1 D are referred to, Fig. 1 D are the side views of another embodiment medium wavelength conversion equipment of the light-source system of the present invention. As shown in figure iD, it is in place of the difference of the present embodiment and embodiment illustrated in fig. 1:It is each in micro structure array in the present embodiment Microstructured bodies 13 are in flat column, i.e., each microstructured bodies 13 are being pros along the section on the direction parallel to micro structure array extension Shape.Unlike the microstructured bodies in other shapes, in the micro structure array for including the microstructured bodies being in the form of a column, mainly Increase the surface area for the material for transformation of wave length for receiving exciting light by the side of cylinder.Due in practice, exciting Light can not accomplish it is complete it is parallel collimate and be normally incident in Wavelength converter, therefore, there is part exciting light to incide to be in The side of the microstructured bodies of column and then excited.

To understand how the light-source system of the present invention works, illustrate in detail below.As shown in Figure 2 A, Tu2AShi The schematic diagram of one embodiment of the light channel structure in light-source system shown in Figure 1A.In the present embodiment, excitation source is (in figure not Show) it is used to produce blue excitation light L1.Micro structure array 103 in Wavelength converter 11 includes yellow fluorescent powder, for inhaling Receive blue light and produce yellow stimulated light L2.Wavelength converter 11 is reflective, i.e. exciting light L1 and stimulated light L2 light path The same side of the Wavelength converter 11 is respectively positioned on, can so make light loss less.Accordingly, can be the first of substrate 105 One reflecting layer is set on the 105a of surface.Because light-emitting phosphor lights for full-shape, the yellow stimulated light being emitted to excitation source is met L2 is then directly emitted, and the stimulated light L2 for meeting basad 105 outgoing are met to exciting after the reflecting layer reflection on first surface 105a Light source is emitted.And be scattered face 107 scatter and through on first surface 105a reflecting layer reflect blue excitation light L1 also meet to Excitation source is emitted, and is mixed into white light with yellow stimulated light.

To improve the utilization rate of the material for transformation of wave length in microstructured bodies, it is preferable that substrate 105 is made up of light transmissive material, And reflecting surface is arranged on the second surface 105b of substrate 105.So, not by micro structure array absorb exciting light and be scattered The part exciting light that face 107 transmits enters after substrate 105 is reflected back micro structure array 103 by second surface 105b.This is reflected back An exciting light part for micro structure array 103 is scattered that face 107 scatters and transmits outgoing, and another part is reflected onto micro-structural battle array The one side that the bottom surface of row 103, i.e. micro structure array 103 are in contact with the first surface 105a of substrate 105, and to micro-structural 103 Bottom surface excited to produce stimulated light.

Certainly, in practice, Wavelength converter 11 can also be transmission-type.As shown in Figure 2 B, Fig. 2 B are figures The schematic diagram of another embodiment of the light channel structure in light-source system shown in 1A.In the present embodiment, substrate 105 is by printing opacity material Material is made, such as glass.Yellow stimulated light L2 transmitted through substrate 105 caused by yellow fluorescent powder in micro structure array 103 is simultaneously It is emitted from the second surface 105b of substrate 105.Part exciting light be scattered face 107 scatter after transmitted through substrate 105 and from substrate 105 second surface 105b outgoing, and it is mixed into white light with yellow stimulated light L2.In the present embodiment, due to the full-shape of fluorescent material It is luminous, side outgoing of the part yellow stimulated light from Wavelength converter 11 towards excitation source can be caused, cause part light not It is collected into and loses.Therefore, it can be incident in exciting light L1 in the light path of Wavelength converter 11 and place optical filter, be used for Transmission exciting light simultaneously reflects stimulated light, to improve the collection rate of light beam.Certainly, it be not very high occasion to brightness requirement, Can be without using the optical filter.

Embodiment two

Referring to Fig. 3, Fig. 3 is the structural representation of another embodiment of the light-source system of the present invention.In the present embodiment, Light-source system 300 includes excitation source 301 and Wavelength converter 33.Wavelength converter 33 includes the He of micro structure array 303 Substrate 305.Unlike embodiment one, the substrate 305 in the present embodiment is made up of light transmissive material, and micro structure array 303 It is arranged in substrate 305.

Substrate 305 includes the first surface 305a and second surface 305b relative with first surface 305a, wherein the first table Face 305a is used to receive the exciting light L1 from excitation source 301.Micro structure array 303 have rise and fall one side towards this first Surface 305a, and the bearing of trend of the micro structure array 303 is parallel to first surface 305a.

Compared to embodiment one, in the present embodiment in micro structure array 303 each microstructured bodies 303a and substrate 305 contact surface Bigger, the more conducively radiating of micro structure array 303 of product.

In the present embodiment, Wavelength converter 33 can be transmission-type or reflective, the light of the rwo Line structure is analogous respectively to the light channel structure in the transmission-type described in embodiment one and reflective Wavelength converter, its Middle identical part will not be repeated here.But compared to the transmission-type Wavelength converter described in embodiment one, the present embodiment In can be coated with filter coating on first surface 305a, for transmiting exciting light and reflecting stimulated light, to improve the collection rate of light beam. Further, the filter coating can also be arranged to reflect the exciting light of large angle incidence so that reflected by micro structure array 303 Part exciting light in be reflected back again by the filter coating from the part that the first surface 305a of the substrate 305 is emitted with wide-angle Micro structure array 303, to improve the utilization rate of exciting light.

In the present embodiment, the scattering surface 307 in micro structure array 303 between each microstructured bodies 303a can be by each micro- Scattering material or diffusing structure is set to realize between structure.For example, can be by by the second surface 305b's of substrate 305 Realized corresponding to the surface roughening in region between each micro-structural.

Embodiment three

Referring to Fig. 4, Fig. 4 is the structural representation of another embodiment of the light-source system of the present invention.Light-source system 400 Including excitation source (not shown) and Wavelength converter 44.Wavelength converter 44 includes wavelength conversion layer 403.It is real with more than Apply unlike example, the micro structure array in Wavelength converter 44 in the present embodiment is not arranged in substrate or substrate It is interior, but directly formed with micro- as described by embodiment one and two on side of the wavelength conversion layer 403 towards excitation source Array of structures.Compared to above example, due to carrying the wavelength conversion layer without substrate in the present embodiment, and then can reduce Cost.

In the present embodiment, Wavelength converter 44 is reflective, and each microstructured bodies are in the form of a column.Can be by wavelength Conversion layer 403 is coated with reflectance coating to realize on the opposite side of excitation source.Certainly, Wavelength converter 44 can also pass through It is arranged on speculum to realize reflective structure.

Corresponding, scattering surface 407 is arranged to scattered reflection face, can plate reflectance coating between each microstructured bodies by elder generation Scattering material or diffusing structure are provided with again afterwards to realize.Certainly, if by setting scattering material between each microstructured bodies Material scatters to realize, because scattering material has part reflex to light beam, when the thickness that scattering material is set is sufficiently large, The effect of scattered reflection can be realized, i.e., reflectance coating need not be first plated between each microstructured bodies, and scattering material is directly set Material.Certainly, in practice, if the amount needed to exciting light is smaller, because scattering material has part reflection to light beam Effect, scattering material can also not have to accomplish that the thickness of whole light beams need to be reflected, as long as there is segment beam to obtain reflection. And the exciting light transmitted through the scattering material excites rear caused stimulated light and unabsorbed exciting light to material for transformation of wave length Reflectance coating reflection of the layer 403 on the opposite side of excitation source can be wavelength-converted, and from wavelength conversion layer towards exciting light The side outgoing in source.The light path knot in reflective Wavelength converter in light channel structure and above example in the present embodiment Structure is similar, will not be repeated here.

To make the surface area for being used to receive exciting light on micro structure array on each microstructured bodies bigger, it is preferable that each micro- knot The average height of structure body is more than the half of the average headway between two microstructured bodies of arbitrary neighborhood.

In various embodiments above, the exciting light for synthesizing mixing emergent light is different with the ratio of stimulated light, can cause The chromaticity coordinates of its mixing emergent light synthesized is different.Micro structure array medium wavelength transition material in Wavelength converter it is dense Regularly, the ratio of exciting light and stimulated light is decided by what exciting light was formed on Wavelength converter to degree one in the mixed light of outgoing The ratio of the surface area of the surface area for each microstructured bodies that hot spot is covered and the scattering surface covered;It is easily understood that work as When micro-structural is sufficiently small, this ratio is similar to the surface area of the surface area of each microstructured bodies and scattering surface in micro structure array Ratio.Because the ratio of the exciting light composition in mixing emergent light is accounted for by the surface area of scattering surface the ratio of the micro structure array gross area Example determines that the ratio that the ratio of stimulated light composition is accounted for the micro structure array gross area by the surface area of each microstructured bodies determines;Therefore, The chromaticity coordinates of mixing emergent light that can be as needed determines the ratio of exciting light and stimulated light, and then determines in micro structure array The ratio of the surface area of each microstructured bodies and the surface area of scattering surface, to cause the color of the mixed light of final light source system exit to sit Mark reaches the chromaticity coordinates needed in advance.

In various embodiments above, excitation source and Wavelength converter are geo-stationary.In practice, also may be used With using drive device driving Wavelength converter motion so that the hot spot that exciting light is formed on Wavelength converter is by predetermined Move in path.So, the heat-sinking capability of Wavelength converter can further be improved.For example, motor driving wavelength convert can be used Device rotates, to cause the hot spot that exciting light is formed on Wavelength converter periodically to act on micro-structural battle array by circular path Row.

Further, light-source system can also include control device, and micro structure array includes at least two different zones, The ratio of the surface area of each micro-structural wherein on two regions and the surface area of scattering surface is different, and in different zones Different proportion corresponds to the predetermined chromaticity coordinates of different mixing emergent lights.When needing to change the chromaticity coordinates of mixing emergent light, control Device sends a control signal to drive device, and wherein the control signal includes type of drive.Drive device obtains the control signal, And Wavelength converter is driven according to type of drive included in the control signal so that exciting light turns in wavelength The motion path of the hot spot formed on changing device is converted in presumptive area, so that Wavelength converter outgoing meets predetermined color seat The mixed light of scale value.

For concrete example, in the present embodiment, drive device is used to drive Wavelength converter periodic rotary.It is corresponding Ground, each microstructured bodies in micro structure array can be in multiple endless parallel laid out in parallel.In different rings, each microstructured bodies it Between spacing it is different, i.e. the area of scattering surface is different.In the present embodiment, in the ring enclosed positioned at outermost one between each microstructured bodies Spacing is maximum.Along the direction of radial direction, the spacing in different rings between each microstructured bodies is gradually reduced, i.e., in more inner ring The area of scattering surface is smaller, then exciting light account for the mixed light of outgoing ratio it is smaller, stimulated light accounts for the ratio of the mixed light of outgoing It is bigger.When changing the chromaticity coordinates of mixed light of outgoing, if the ratio that exciting light accounts for the mixed light of outgoing need to be increased, control dress Put and send a control signal to drive device so that drive device driving Wavelength converter motion, to change exciting light in micro- knot The position of the hot spot formed on structure array, it is allowed to move toward outer shroud along the direction in the center of circle for radially carrying micro structure array.If The ratio that stimulated light accounts for the mixed light of outgoing need to be increased, control device sends a control signal to drive device so that drive device Wavelength converter motion is driven, so that the position of hot spot is moved radially towards the center of circle of micro structure array toward inner ring.

Described above is the surface area to the microstructured bodies in micro structure array in the different zones of Wavelength converter The citing different from the ratio of the surface area of scattering surface, is not limited it.In practice or positioned at outermost one Spacing in the ring of circle between each microstructured bodies is minimum;And along the direction of radial direction, in different rings between each microstructured bodies between Away from gradual increase, i.e., the area of the scattering surface in more inner ring is bigger, then exciting light account for the mixed light of outgoing ratio it is bigger, The ratio that stimulated light accounts for the mixed light of outgoing is smaller.

Or each microstructured bodies are square array distribution in micro structure array, wherein in every a line in the square array Each microstructured bodies are uniformly distributed, i.e., the surface area of each microstructured bodies is consistent and each microstructured bodies between scattering surface surface area one Cause;Ratio without the surface area of the surface area of each microstructured bodies and scattering surface in colleague is different.For example, along perpendicular to each row Direction, the ratio of the surface area of the surface area of each microstructured bodies and scattering surface is gradually reduced in not going together.Accordingly, driving dress It is set to linear translation device so that certain a line that hot spot is acted in the micro structure array along straight line path respectively.When needing to change During the chromaticity coordinates of the mixed light of outgoing, drive device is controlled by control device, to change exciting light on Wavelength converter Row where the hot spot of formation.Certainly, in the present embodiment, can also with each microstructured bodies in a line in square micro structure array Uneven distribution, as long as so that exciting light is caused when being moved in the hot spot formed on Wavelength converter wherein a line Mix the mean color coordinates of emergent light and the caused mean color coordinates difference for mixing emergent light when other rows move.

To realize the chromaticity coordinates for more accurately changing mixing emergent light, light-source system can further include detection dress Put, the chromaticity coordinates for being detected to the chromaticity coordinates for mixing emergent light and detecting this feeds back to user or control fills Put.If feeding back to user, user can fill according to the gap of the chromaticity coordinates detected and predetermined chromaticity coordinates to control to control manually Put to control drive device so that the hot spot that exciting light is formed on Wavelength converter moves toward precalculated position.If feed back to Control device, then control device can predefine predetermined chromaticity coordinates, and calculate the chromaticity coordinates detected and predetermined chromaticity coordinates Gap, when the gap exceeds predetermined threshold, control device sends control signal to drive device, and drive device is according to the control Signal drives Wavelength converter to move so that the hot spot that exciting light is formed on Wavelength converter is moved to so that detecting The chromaticity coordinates arrived the position consistent with predetermined chromaticity coordinates.

For concrete example, in the present embodiment, blue excitation light and yellow stimulated light are mixed into white light outgoing.Due to white The chromaticity coordinates and colour temperature of light can mutually convert, and for ease of calculating, detection device is used for the colour temperature for detecting white light.Control device is pre- The amplitude that Wavelength converter moves every time is first set, in the present embodiment, the amplitude is that wavelength conversion layer radially translates Amplitude D0, and the colour temperature for presetting white light is S1, predetermined threshold S0.

The optical signal of the white light of detection Wavelength converter outgoing, and the colour temperature of the white light is obtained, it is recorded as S2.The colour temperature is fed back to control device by detection device.Control device first enters to predetermined colour temperature S1 and actual colour temperature S2 difference Row judges.If S1 and S2 difference is less than S0, control device does not act.If S1 and S2 difference is more than or equal to S0, Control device is judged S1 and S2 size.If S1 is more than S2, control device sends control signal to drive device, made Drive device driving Wavelength converter toward increase colour temperature S2 direction translate once, and the amplitude of translation is predetermined amplitude D0.If S1 is less than S2, then control device sends control signal to drive device, makes drive device driving Wavelength converter toward reduction color Once, the amplitude of translation is predetermined amplitude D0 for warm S2 direction translation.After Wavelength converter translation, detection device detects light again Signal, and the new colour temperature of white light is obtained, it is recorded as S3.The colour temperature is fed back to control device by detection device.Control device is first right Predetermined colour temperature S1 and actual colour temperature S3 difference are judged.With this reciprocally, until actual colour temperature and predetermined colour temperature S1 difference During less than pre-established threshold S0, control device stops driving of the drive device to Wavelength converter.So so that the colour temperature of white light Regulation reach automation, it is and more accurate.

Additionally, control device can also pre-set mapping table.Contain actual colour temperature and predetermined color in the mapping table The different range of the difference of temperature, and the type of drive corresponding to variant difference range, the type of drive include driving wavelength and turned The amplitude of changing device motion and direction.When detection device sends the actual colour temperature detected to control device, control device elder generation Judge whether the actual colour temperature and the difference of predetermined colour temperature exceed predetermined threshold.If the difference controls without departing from predetermined threshold Device does not act.When the difference exceeds predetermined threshold, control device obtains the driving corresponding to the difference from mapping table Mode simultaneously produces control signal, and sends the control signal to drive device, and the control signal includes type of drive, that is, drives ripple The direction of long conversion equipment motion and amplitude.Drive device is carried out according to the type of drive in control signal to Wavelength converter Driving so that Wavelength converter moves according to predetermined amplitude and direction.

Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.

The embodiment of the present invention also provides a kind of optical projection system, including light-source system, and the light-source system can have above-mentioned each Structure and function in embodiment.The optical projection system can use various shadow casting techniques, such as liquid crystal display (LCD, Liquid Crystal Display) shadow casting technique, digital light processor (DLP, Digital Light Processor) shadow casting technique. In addition, above-mentioned light-emitting device can also be applied to illuminator, such as stage lighting illumination.

Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations Technical field, it is included within the scope of the present invention.

Claims (5)

1. a kind of light-source system, including excitation source and Wavelength converter, it is characterised in that:
The excitation source is used to produce blue excitation light;
The Wavelength converter includes reflecting layer, substrate and the material for transformation of wave length set gradually;
The Wavelength converter sets the side of material for transformation of wave length to be arranged at institute towards exciting light, the material for transformation of wave length State in the light path of exciting light;The substrate is made up of light transmissive material, and exciting light is incident on material for transformation of wave length not to be turned by wavelength The exciting light that conversion materials absorb is reflected back material for transformation of wave length transmitted through the substrate by reflecting layer;
The material for transformation of wave length is made micro structure array, and the spacing between described two micro-structurals of arbitrary neighborhood is more than zero, institute State and scattering surface is set between two micro-structurals of arbitrary neighborhood, the light sent for scattering exciting light and/or material for transformation of wave length.
2. light-source system according to claim 1, it is characterised in that the substrate includes first surface and second surface, Side where the second surface sets reflecting layer, and first surface side sets material for transformation of wave length, wherein, the first surface is at least Scattering surface is made by surface roughening in part.
3. light-source system according to claim 1, it is characterised in that the substrate includes first surface and second surface, Side sets reflecting layer where the second surface, and the first surface and the second surface are oppositely arranged, the first surface Scattering layer made of scattering material or diffusing structure is provided between material for transformation of wave length.
4. light-source system according to any one of claim 1 to 3, it is characterised in that the material for transformation of wave length is Huang Color fluorescent material.
5. a kind of optical projection system, it is characterised in that including the light-source system any one of Claims 1-4.
CN201610216326.7A 2012-10-17 2012-10-17 Light-source system, Wavelength converter and relevant projecting system CN105867057B (en)

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CN105573031B (en) * 2015-12-18 2018-09-21 海信集团有限公司 A kind of light source and laser projection device
CN108287449A (en) * 2015-12-18 2018-07-17 海信集团有限公司 A kind of colour wheel
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