CN104267569A - Projection device - Google Patents

Projection device Download PDF

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Publication number
CN104267569A
CN104267569A CN201410484091.0A CN201410484091A CN104267569A CN 104267569 A CN104267569 A CN 104267569A CN 201410484091 A CN201410484091 A CN 201410484091A CN 104267569 A CN104267569 A CN 104267569A
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CN
China
Prior art keywords
light
district
excitation
produces
projection arrangement
Prior art date
Application number
CN201410484091.0A
Other languages
Chinese (zh)
Inventor
李国骏
徐坚镪
Original Assignee
苏州佳世达光电有限公司
佳世达科技股份有限公司
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Application filed by 苏州佳世达光电有限公司, 佳世达科技股份有限公司 filed Critical 苏州佳世达光电有限公司
Priority to CN201410484091.0A priority Critical patent/CN104267569A/en
Publication of CN104267569A publication Critical patent/CN104267569A/en

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Classifications

    • 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
    • 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
    • G03B21/2066Reflectors in illumination beam
    • 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
    • G03B21/208Homogenising, shaping of the illumination light

Abstract

A projection device comprises a light source module and a light guide piece. The light source module comprises an excitation light source, a light transmitting disk and a beam splitting system. The excitation light source is used for emitting an excitation light beam. The light transmitting disk is used for receiving excitation light beam and comprises a colored light generating area and a color wheel area. Multiple quantum dots are distributed in the colored light generating area and are used for receiving a part of the excitation light beam so as to generate an excited light beam. The color wheel area is located in the light transmitting disk and comprises multiple light filtering areas so as to generate a plurality of colored light rays. The beam splitting system is used for guiding the excited light beam to the color wheel area. The light guiding piece is used for receiving the multiple colored light rays and transmitting the multiple colored light rays so that the multiple colored light rays can be away from the light source module.

Description

Projection arrangement

Technical field

The invention relates to a kind of projection arrangement, espespecially a kind of projection arrangement utilizing quantum dot to produce Stimulated Light.

Background technology

No matter be projection arrangement or liquid crystal screen display, the primary lights how obtaining colour purity is all a considerable ring, but after utilizing color luminous diode collocation phosphor powder to send white light in the past, the light-emitting mode of each primitive color light is obtained again with optical filter, such as utilize blue-light-emitting diode to arrange in pairs or groups yellow fluorescent powder to send white light, then may because the conversion efficiency of phosphor powder and color rendering neither good and derive the not good enough problem of image quality.Even and if utilize multicolor luminous diode also not easily to obtain the high primitive color light of color saturation, the situation that therefore shown image also may have contrast not enough or bright-coloured not.

Quantum dot (quantum dots, QD) is Semiconductor Nanometer Particles, when quantum dot is after high-octane light source irradiation, can send the Stimulated Light of different wave length because of quantum point grain diameter size.That is: the particle diameter of quantum dot is less, as particle diameter close to 2nm time, partially blue Stimulated Light can be sent; And larger quantum dot, as particle diameter close to 6nm time, then can send the Stimulated Light of convergence redness.In addition, the conversion efficiency of quantum dot is good, and by the selection of particle diameter, sends the light that color saturation is very high.In conjunction with above-mentioned advantage, quantum dot be considered to can be used to solve above-mentioned for utilizing light-emittingdiode to produce high saturation color time the difficult problem that faces.Therefore how to effectively utilize the characteristic of quantum dot, and be applied to projection arrangement to strengthen the visual effect of image, namely become a problem urgently studied.

Summary of the invention

For achieving the above object, the invention provides a kind of projection arrangement, this projection arrangement comprises light source module and light guide.Light source module comprises excitation source, transparent plate and beam splitting system.Excitation source is in order to send excitation beam.Transparent plate is in order to receive excitation beam and to have a center.Transparent plate comprises coloured light and produces district and colour wheel district.Coloured light produces the multiple quantum dot of distribution in district, and this quantum dot is excited light beam in order to the generation of receiving unit excitation beam.Colour wheel district is positioned at transparent plate and produces district with coloured light and misplaces, and colour wheel district comprises multiple filter area with the multiple coloured light of output.Beam splitting system will be in order to will be excited beam direction colour wheel district.Light guide is in order to receive and to transmit multiple coloured light away from light source module.

Preferably, this coloured light produces any point in district to the distance at this center and to be greater than or less than in this colour wheel district any point to the distance at this center.

Preferably, these filter areas comprise: red filter district, and in order to output ruddiness and relatively this center is between the first angular range; Green filter district, in order to output green glow and relatively this center is between the second angular range; And blue filter district, in order to output blue light and relatively this center is between angular extent.

Preferably, the plurality of quantum dot is evenly distributed in this coloured light generation district.

Preferably, this excitation beam is blue laser beams, and this is excited light beam and comprises red Stimulated Light and green Stimulated Light.

Preferably, this beam splitting system comprises: light splitting piece, between this excitation source and this transparent plate, penetrates this light splitting piece produce district with this coloured light incident in order to make this excitation beam, and reflects this and be excited light beam; First catoptron, produce this excitation beam in district through this coloured light in order to reflection, wherein this transparent plate is between this light splitting piece and this first catoptron; Second catoptron, in order to reflection this excitation beam from the reflection of this first catoptron; 3rd catoptron, in order to reflection this excitation beam from the reflection of this second catoptron, wherein penetrates this light splitting piece from this excitation beam of the 3rd catoptron reflection, and with reflect from this light splitting piece this be excited light beam and be mixed into mixed light; And the 4th catoptron, in order to this mixed light is reflexed to this colour wheel district.

Preferably, this coloured light produces district and comprises reflecting surface, is positioned at this coloured light and produces the opposition side of district relative to this excitation source, produce this excitation beam in district in order to reflection through this coloured light.

Preferably, this excitation beam comprises orthogonal first light beam in polarization direction and the second light beam, and this beam splitting system comprises: color separation polaroid, between this excitation source and this transparent plate, in order to make this first light beam penetrate this color separation polaroid and reflect mixed light, this mixed light is excited light beam and this excitation beam of part forms by being produced this of district from this coloured light; Quarter-wave plate, between this color separation polaroid and this transparent plate, has the polarization direction identical with this second light beam in order to make this excitation beam of part through this coloured light generation district to this color separation polaroid; And catoptron, in order to receive and to reflect this mixed light to this colour wheel district.

Preferably, this coloured light produces district and comprises: ruddiness produces district, this red filter district adjacent and relatively this center between this first angular range and multiple red light quantum point that distributes; Green glow produces district, this green filter district adjacent and relatively this center between this second angular range and multiple green light quantum point that distributes; And blue light produces district, this blue filter district adjacent and relatively this center between this angular extent and this quantum dot of distribution-free.

Preferably, this excitation beam is ultraviolet light, and this is excited light beam and comprises red Stimulated Light, blue Stimulated Light and green Stimulated Light.

Preferably, this beam splitting system comprises: light splitting piece, and between this excitation source and this transparent plate, wherein this ultraviolet light penetrates this light splitting piece and this coloured light incident produces district is excited by this mixed light that light beam forms with output, and this light splitting piece reflects this mixed light; And catoptron, in order to reflection through this mixed light of this light splitting piece to this colour wheel district.

Preferably, this coloured light produces district and comprises: ruddiness produces district, this red filter district adjacent and relatively this center between this first angular range and multiple red light quantum point that distributes; Green glow produces district, this green filter district adjacent and relatively this center between this second angular range and multiple green light quantum point that distributes; And blue light produces district, this blue filter district adjacent and relatively this center between this angular extent and multiple blue light quantum point that distributes.

Compared with prior art, the characteristic of quantum dot can effectively utilize on projection arrangement by projection arrangement provided by the invention, and obtains saturate each color light source, and then strengthens the quality of projection arrangement show image.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the projection arrangement of one embodiment of the invention.

Fig. 2 is the schematic diagram of the projection arrangement of another embodiment of the present invention.

Fig. 3 is the schematic diagram of the projection arrangement of another embodiment of the present invention.

Fig. 4 is the schematic diagram of the projection arrangement of another embodiment of the present invention.

Fig. 5 is the schematic diagram of the projection arrangement of another embodiment of the present invention.

Fig. 6 is the schematic diagram of the projection arrangement of another embodiment of the present invention.

Embodiment

Fig. 1 is the schematic diagram of the projection arrangement 10 of one embodiment of the invention.This projection arrangement 10 comprises light source module 100 and light guide 200.This light source module 100 comprises excitation source 110, transparent plate 120 and beam splitting system 130.This excitation source 110 can send exciting light.This transparent plate 120 is in order to receive this exciting light and to have a center 120c, and this transparent plate 120 comprises coloured light and produces district 122 and colour wheel district 124.This coloured light produces the multiple quantum dot of distribution in district 122, and this quantum dot can produce Stimulated Light after this exciting light of reception.This colour wheel district 124 to be positioned in this transparent plate 120 and to produce district 122 with this coloured light and misplaces.This Stimulated Light that this quantum dot can send by this beam splitting system 130 leads this colour wheel district 124.

In Fig. 1, this colour wheel district 124 comprises red filter district 124R, green filter district 124G and blue filter district 124B, this red filter district 124R is in order to the light beyond absorptive red light, this green filter district 124B is in order to absorb the light beyond green glow, and this blue filter district 124B is in order to absorb the light beyond blue light.In addition, this red filter district 124R relative to this center 120c between the first angular range, theta 1, this green filter district 124G relative to this center 120c between the second angular range, theta 2, and this blue filter district 124B relative to this center 120c between angular extent θ 3.In one embodiment of this invention, this first angular range, theta 1, this second angular range, theta 2and this angular extent θ 3the number of degrees that phase XOR is identical can be had, and angular dimension can be adjusted, to distribute the size of this red filter district 124R, this green filter district 124G and this blue filter district 124B according to the characteristic of application.

In an embodiment of the present invention, this beam splitting system 130 can comprise light splitting piece 131, first catoptron 132, second catoptron 133, the 3rd catoptron 134 and the 4th catoptron 135.This light splitting piece 131 is between this excitation source 110 and this transparent plate 120, and the excitation beam A in order to make this excitation source 110 send penetrates this light splitting piece 131 and produces district 122 with this coloured light of this transparent plate 120 incident.Namely this quantum dot that now this coloured light produces distribution in district 122 can be subject to exciting of this excitation beam A, and sends and be excited light beam B.In this projection arrangement 10, this excitation beam A that this excitation source 110 sends can be blue laser beam.Because the color saturation of the laser beam of blueness is very high, therefore can be used as the primitive color light of mixed white light, and suitably can select the particle diameter that this coloured light produces the quantum dot that district 122 distributes, this that quantum dot is sent is excited light beam B and is only comprised red Stimulated Light and green Stimulated Light.Because the material of this light splitting piece 131 is for can make blue wavelength light penetrate, and make other wavelength light line reflections, therefore this also can be excited light beam B and reflex to the 4th catoptron 135 by this light splitting piece 131.

In addition, the part excitation beam A1 of this excitation beam A that this excitation source 110 sends can penetrate this coloured light and produce the region not being distributed with quantum dot in district 122, and this excitation beam A1 penetrating this coloured light generation district 122 can be directed to and being excited in the same paths of light beam B1 of reflecting from this light splitting piece 131 by this first catoptron 132, this second catoptron 133, the 3rd catoptron 134.This first catoptron 132 can be arranged at the opposite side of this transparent plate 120 relative to this light splitting piece 131, that is this transparent plate 120 is between this light splitting piece 131 and this first catoptron 132.This first catoptron 132 can reflect and penetrate this excitation beam A1 that this coloured light produces district 122.This second catoptron 133 can reflect the excitation beam A2 from the reflection of this first catoptron 132, and the 3rd catoptron 134 can reflect the excitation beam A3 from the reflection of this second catoptron 133.And this light splitting piece 131 can be penetrated from the excitation beam A4 that the 3rd catoptron 134 reflects, and with reflect from this light splitting piece 131 this be excited light beam B1 and be mixed into mixed light C.This mixed light C can be reflexed to this colour wheel district 124 by the 4th catoptron 135.

In one embodiment of this invention, multiple quantum dot can be evenly distributed on this coloured light and produce in district 122, now this is excited the yellow mixed light of light beam B for being combined by red Stimulated Light and green Stimulated Light, and namely this mixed light C is excited the white light mixed by light beam B1 (for yellow mixed light) and this excitation beam A4 (for blue laser beams) by this reflection from the 3rd catoptron 134.Owing to rotating centered by the 120c of this Hui Yigai center, colour wheel district 124, therefore this mixed light C at Different periods respectively by this red filter district 124R, this green filter district 124B and this blue filter district 124B, and can produce the saturated red light C of color respectively r, green light C gand blue light C b.This light guide 200 can in order to receive and to transmit this red light C r, this green light C gand this blue light C baway from this light source module 100.

In other embodiments of the invention, multiple quantum dot also can be distributed in coloured light generation district according to other modes.Fig. 2 is the schematic diagram of the projection arrangement 10 ' of another embodiment of the present invention.With the difference of this projection arrangement 10 of above-described embodiment, this projection arrangement 10 ' is that the light source module 100 ' of this projection arrangement 10 ' can utilize transparent plate 120 ' to replace the function of this transparent plate 120 in this projection arrangement 10.This transparent plate 120 ' has a center 120c ', and this transparent plate 120 ' comprises coloured light and produces district 122 ' and colour wheel district 124 '.This colour wheel district 124 ' comprises red filter district 124 ' R, green filter district 124 ' G and blue filter district 124 ' B, and this coloured light produces, and district 122 ' comprises ruddiness generation district 122 ' R, green glow produces district 122 ' G and blue light produces district 122 ' B.This ruddiness produces district 122 ' R and the distribute multiple red light quantum point that send red exciting light adjacent with this red filter district 124 ' R, and this ruddiness generation district 122 ' R and this red filter district 124 ' R relative centre 120 ' c is between the first angular range, theta ' 1.This green glow produces the green light quantum point that district 122 ' G and distributive plural adjacent with this green filter district 124 ' G can send green exciting light, this green glow generation district 122 ' G with G this center 120 ' relative, this green filter district 124 ' c between the second angular range, theta ' 2.This blue light produces district 122 ' B and distribution-free quantum dot adjacent with this blue filter district 124 ' B, that is this excitation beam A can penetrate this blue light produce district 122 ' B enter beam splitting system 130, this blue light produce district 122 ' B be between angular extent θ ' with B this center 120 ' relative, this blue filter district 124 ' c 3.

This ruddiness produced in district 122 ' due to this coloured light produces district 122 ' R, this green glow produces district 122 ' G and this blue light to produce district 122 ' B be region independently, be therefore excited light beam B ' and comparatively simple color can be had through the mixed light C ' of beam splitting system 130 incidence afterwards.And be adjacent with this red filter district 124 ' R and this green filter district 124 ' G respectively because ruddiness generation district 122 ' R, green glow generation district 122 ' G and blue light produce district 122 ' B, therefore this mixed light C ' being imported into this red filter district 124 ' R can be the mixed light based on redness, this mixed light C ' being imported into this green filter district 124 ' G can be the mixed light based on green, and this mixed light C ' being imported into this blue filter district 124 ' B can be the mixed light based on blueness.Thus, by this colour wheel district 124 ' the light ratio of filtering namely can greatly reduce, make the coloured light brightness entering this light guide 200 to obtain lifting, and the whole lighting efficiency of this projection arrangement 10 ' also more improves.

The characteristic of quantum dot can effectively utilize on projection arrangement by this projection arrangement 10 above-mentioned and this projection arrangement 10 ', and obtains saturate each color light source, and then strengthens the quality of projection arrangement show image.

Fig. 3 is the schematic diagram of the projection arrangement 30 of another embodiment of the present invention.With the difference of this projection arrangement 10, this projection arrangement 30 is that the light source module 300 of this projection arrangement 30 can replace the function of this transparent plate 120 and this beam splitting system 130 by transparent plate 320 and beam splitting system 330.This transparent plate 320 has a center 320c, and this transparent plate 320 comprises coloured light and produces district 322 and colour wheel district 324.The structure in this colour wheel district 324 can be identical with this colour wheel district 124 of this projection arrangement 10.This coloured light produces in district 322 and is distributed with a plurality of red light quantum point and green light quantum point, and this coloured light generation district 322 comprises reflecting surface 326.Reflecting surface 326 is positioned at this coloured light and produces the opposition side of district 322 relative to this excitation source 110.This beam splitting system 330 comprises color separation polaroid 331, quarter-wave plate 332 and catoptron 333.This color separation polaroid 331 is between this excitation source 110 and this transparent plate 320, and this color separation polaroid 331 can have polarization effect to blue light and other coloured light can be made directly to penetrate, such as, the blue light with the first polarization direction is only made to pass through, and make the blue light reflection with the second polarization direction, and other coloured light can be made directly to pass through.This quarter-wave plate 332 is between this color separation polaroid 331 and this transparent plate 320, this quarter-wave plate 332 can change the polarization direction penetrating light, the such as former incident ray with the first polarization direction is by this quarter-wave plate 332 after twice, the polarization direction of incident ray can be made to become the second polarization direction, and orthogonal with this first polarization direction during first time incidence.Wherein this first polarization direction can be P polarization direction or S polarization direction.

In one embodiment of this invention, if this excitation beam A that this excitation source 110 sends is the blue laser beams with the first polarization direction, then this excitation beam A can penetrate this color separation polaroid 331 and this coloured light incident produces district 322 after this quarter-wave plate 332.Now, namely this coloured light multiple quantum dots produced in district 322 can send is excited light beam B, and this reflecting surface 326 then can reflect and penetrate this coloured light and produce the part excitation beam A not being distributed with quantum dot region in district 322.Again can pass through this quarter-wave plate 332 through the excitation beam A1 of this reflecting surface 326 reflection, make the polarization direction of this excitation beam A1 can become second polarization direction vertical with this first polarization direction by this first polarization direction of original this excitation beam A.Due to this excitation beam A1 there is this second polarization direction and this to be excited light beam B be the Stimulated Light of non-blueness, therefore this point of light polarization plate 331 can combine being excited light beam B by this excitation beam A1 and this mixed light C and reflex to this catoptron 333, and this catoptron 333 can receive and reflect mixed light C to this colour wheel district 324.

In one embodiment of this invention, quantum dot can be evenly distributed on this coloured light and produce in district 322, now this is excited light beam B is yellow mixed light for being combined by green Stimulated Light and red Stimulated Light, and namely this mixed light C is the white light of being excited mixed by light beam B and this excitation beam A1 (for blue laser beams) by this.Owing to rotating centered by the 320c of this Hui Yi center, colour wheel district 324, therefore this mixed light C can pass through red filter district 324R, green filter district 324G and blue filter district 324B at Different periods respectively, and produces the saturated red light C of color respectively r, green light C gand blue light C b.Light guide 200 can in order to receive and to transmit this red light C r, this green light C gand this blue light C baway from this light source module 300.

But, in another embodiment of the invention, the distribution mode of plural quantum dot also can have identical distribution mode with the quantum dot produced in district 122 ' of coloured light in Fig. 2, also this coloured light can be produced district 322 and be divided into ruddiness generation district, green glow generation district and blue light generation district also adjacent with red filter district, green filter district and blue filter district respectively.Thus, mixed light through this colour wheel district 324 of this beam splitting system 330 incidence also can have comparatively simple color, the light ratio that this colour wheel district 324 is filtered reduces, and then promote the coloured light brightness entering this light guide 200, and the whole lighting efficiency of this projection arrangement 30 is also more improved.

The characteristic of quantum dot can effectively utilize on projection arrangement by this projection arrangement 30 according to above-described embodiment, and obtains saturate each color light source, and then strengthens the quality of projection arrangement show image.

Fig. 4 is the schematic diagram of the projection arrangement 40 of another embodiment of the present invention.This projection arrangement 40 comprises light source module 400 and light guide 200.This light source module 400 comprises excitation source 410, transparent plate 420 and beam splitting system 430.Excitation source 410 can in order to send excitation beam A, and in an embodiment of the present invention, this excitation beam A can be ultraviolet light.This transparent plate 420 is in order to receive this excitation beam A and to have a center 420c, and this transparent plate 420 comprises coloured light and produces district 422 and colour wheel district 424.This coloured light produces in district 422 and is distributed with red light quantum point, green light quantum point and blue light quantum point, when receiving the irradiation of ultraviolet light, red light quantum point, green light quantum point and blue light quantum point can send red Stimulated Light, green Stimulated Light and blue Stimulated Light respectively.The structure in this colour wheel district 424 can have identical structure with the colour wheel district 124 of projection arrangement 10.

In an embodiment of the present invention, this beam splitting system 430 comprises light splitting piece 431 and catoptron 432.This light splitting piece 431 is between this excitation source 410 and this transparent plate 420.The material of this light splitting piece 431 can make ultraviolet light penetrate, and can make visible color light reflective.This excitation beam A sent due to this excitation source 410 is ultraviolet light, therefore this excitation beam A can penetrate this light splitting piece 431 and incident this coloured light generation district 422, and the quantum dot making this coloured light produce distribution in district 422 produces red, green and blue Stimulated Light, light splitting piece 431 then can by red Stimulated Light B r, green Stimulated Light B gand blue Stimulated Light B bthe mixed light C formed reflexes to this catoptron 432.This catoptron 432 can reflect through this light splitting piece 431 reflection this mixed light C to this colour wheel district 424.

In one embodiment of this invention, quantum dot can be evenly distributed on this coloured light and produce in district 422, and now namely this mixed light C is by this red Stimulated Light B r, this green Stimulated Light B gand this blue Stimulated Light B binstitute combines white light.Owing to rotating centered by the 420c of this Hui Yigai center, colour wheel district 424, therefore this mixed light C at Different periods respectively by red filter district 424R, green filter district 424G and blue filter district 424B, and can produce the saturated red light C of color respectively r, green light C gand blue light C b.This light guide 200 can receive and transmit this red light C r, this green light C gand this blue light C baway from this light source module 400.

In other embodiments of the invention, multiple quantum dot also can be distributed in coloured light generation district according to other modes.Fig. 5 is the schematic diagram of the projection arrangement 40 ' of another embodiment of the present invention.With the difference of projection arrangement 40, this projection arrangement 40 ' is that the light source module 400 ' of this projection arrangement 40 ' can utilize transparent plate 420 ' to replace the function of this transparent plate 420 in this projection arrangement 10.This transparent plate 420 ' has a center 420 ' c, and this transparent plate 420 ' comprises coloured light generation district 422 ' and colour wheel district 424 '.This colour wheel district 424 ' comprises red filter district 424 ' R, green filter district 424 ' G and blue filter district 424 ' B, and this coloured light produces, and district 422 ' comprises ruddiness generation district 422 ' R, green glow produces district 422 ' G and blue light produces district 422 ' B.This ruddiness produces district 422 ' R and the distribute multiple red light quantum point that send red exciting light adjacent with this red filter district 424 ' R, this ruddiness generation district 422 ' R with R this center 420 ' relative, this red filter district 424 ' c between the first angular range, theta ' 1.This green glow produces district 422 ' G and the distribute multiple green light quantum point that send green exciting light adjacent with this green filter district 424 ' G, this green glow generation district 422 ' G with G this center 420 ' relative, this green filter district 424 ' c between the second angular range, theta ' 2.This blue light produces district 422 ' B and the distribute multiple blue light quantum point that send blue excitation light adjacent with this blue filter district 424 ' B, this blue light generation district 422 ' B with B this center 420 ' relative, this blue filter district 424 ' c between angular extent θ ' 3.

This ruddiness produced in district 422 ' due to this coloured light produces district 422 ' R, this green glow produces district 422 ' G and this blue light produces B region independently, district 422 ', therefore also comparatively simple color can be had through the mixed light C ' of beam splitting system 430 incidence, and due to this ruddiness generation district 422 ' R, this green glow produce district 422 ' G and this blue light produce district 422 ' B respectively with this red filter district 424R, this green filter district 424G and this blue filter district 424B is adjacent, therefore this mixed light C ' being imported into this red filter district 424 ' R can be the mixed light based on redness, this mixed light C ' being imported into this green filter district 424 ' G can be the mixed light based on green, and this mixed light C ' being imported into this blue filter district 424 ' B can be the mixed light based on blueness.Thus, by this colour wheel district 424 ' the light ratio of filtering namely can greatly reduce, make the coloured light brightness entering this light guide 200 to obtain lifting, and the whole lighting efficiency of this projection arrangement 40 ' also more improves.

In addition, in the diagram, this transparent plate 420 of this projection arrangement 40 has this center 420c, and this coloured light produces district 422 is the outsides being positioned at this colour wheel district 424, that is this coloured light produces any point in district 422 to the distance of this center 420c and to be greater than in this colour wheel district 424 any point to the distance of this center 420c.But this projection arrangement 40 of Fig. 4 is only explanation embodiments of the invention, and and be not used to limit the present invention.In other embodiments of the invention, coloured light produces the inner side of Qu Yike in colour wheel district.

Fig. 6 is the schematic diagram of the projection arrangement 60 of another embodiment of the present invention.With the difference of this projection arrangement 40 of above-described embodiment, this projection arrangement 60 is that the coloured light of this projection arrangement 60 produces district 622 is the inner sides being positioned at colour wheel district 624, that is any point in this coloured light generation district 622 to the distance of center 620c can be less than in this colour wheel district 624 any point to the distance of this center 620c.In addition, in this projection arrangement 60, the material of the light splitting piece 631 of beam splitting system 630 is identical with this light splitting piece 431, but this light splitting piece 631 is produce between district 622 at this coloured light of excitation source 610 and transparent plate 620.Therefore the excitation beam A that this excitation source 610 sends can penetrate this light splitting piece 631 and incident this coloured light be positioned at inside this transparent plate 620 produces district 622, and the quantum dot making this coloured light produce distribution in district 622 produces red, green and blue Stimulated Light, this light splitting piece 631 then can by red Stimulated Light B r, green Stimulated Light B gand blue Stimulated Light B bthe mixed light C formed reflexes to catoptron 632.This catoptron 632 can reflect through this light splitting piece 631 reflection this mixed light C to this colour wheel district 624.Thus, this projection arrangement 60 still can effectively utilize the characteristic of quantum dot to strengthen the quality of projection arrangement show image.In addition, in other embodiments of the invention, transparent plate also can be designed to beyond circle according to the needs of system other shapes.

The characteristic of quantum dot all can effectively utilize on projection arrangement by above-mentioned projection arrangement 40, projection arrangement 40 ' and projection arrangement 60, and obtains saturate each color light source, and then strengthens the quality of projection arrangement show image.

In sum, the characteristic of quantum dot can effectively utilize on projection arrangement by the projection arrangement that the embodiment of the present invention provides, and obtains saturate each color light source, and then strengthens the quality of projection arrangement show image.

The foregoing is only preferred embodiment of the present invention, all equalizations done according to the claims in the present invention change and modify, and all should belong to covering scope of the present invention.

Claims (12)

1. a projection arrangement, is characterized in that, comprises:
Light source module, this light source module comprises:
Excitation source, in order to send excitation beam;
Transparent plate, in order to receive this excitation beam and to have a center, this transparent plate comprises:
Coloured light produces district, and this coloured light produces the multiple quantum dot of distribution in district, and light beam is excited in the generation of this this excitation beam of quantum dot receiving unit;
Colour wheel district, is positioned at this transparent plate and produces district with this coloured light and misplace, and this colour wheel district comprises multiple filter area with the multiple coloured light of output; And
Beam splitting system, in order to be excited this colour wheel district of beam direction by this; And
Light guide, receives and transmits the plurality of coloured light away from this light source module.
2. projection arrangement as claimed in claim 1, is characterized in that, this coloured light produces any point in district to the distance at this center and to be greater than or less than in this colour wheel district any point to the distance at this center.
3. projection arrangement as claimed in claim 1, it is characterized in that, the plurality of filter area comprises:
Red filter district, in order to output ruddiness and relatively this center is between the first angular range;
Green filter district, in order to output green glow and relatively this center is between the second angular range; And
Blue filter district, in order to output blue light and relatively this center is between angular extent.
4. projection arrangement as claimed in claim 3, is characterized in that, the plurality of quantum dot is evenly distributed on this coloured light and produces in district.
5. projection arrangement as claimed in claim 3, it is characterized in that, this excitation beam is blue laser beams, and this is excited light beam and comprises red Stimulated Light and green Stimulated Light.
6. projection arrangement as claimed in claim 5, it is characterized in that, this beam splitting system comprises:
Light splitting piece, between this excitation source and this transparent plate, penetrates this light splitting piece in order to make this excitation beam and produces district with this coloured light incident, and reflects this and be excited light beam;
First catoptron, produce this excitation beam in district through this coloured light in order to reflection, wherein this transparent plate is between this light splitting piece and this first catoptron;
Second catoptron, in order to reflection this excitation beam from the reflection of this first catoptron;
3rd catoptron, in order to reflection this excitation beam from the reflection of this second catoptron, wherein penetrates this light splitting piece from this excitation beam of the 3rd catoptron reflection, and with reflect from this light splitting piece this be excited light beam and be mixed into mixed light; And
4th catoptron, in order to reflex to this colour wheel district by this mixed light.
7. projection arrangement as claimed in claim 5, is characterized in that, this coloured light produces district and comprises reflecting surface, is positioned at this coloured light and produces the opposition side of district relative to this excitation source, produce this excitation beam in district in order to reflection through this coloured light.
8. projection arrangement as claimed in claim 7, it is characterized in that, this excitation beam comprises orthogonal first light beam in polarization direction and the second light beam, and this beam splitting system comprises:
Color separation polaroid, between this excitation source and this transparent plate, in order to make this first light beam penetrate this color separation polaroid and reflect mixed light, this mixed light is excited light beam and this excitation beam of part forms by being produced this of district from this coloured light;
Quarter-wave plate, between this color separation polaroid and this transparent plate, has the polarization direction identical with this second light beam in order to make this excitation beam of part through this coloured light generation district to this color separation polaroid; And
Catoptron, in order to receive and to reflect this mixed light to this colour wheel district.
9. projection arrangement as claimed in claim 5, is characterized in that, this coloured light produces district and comprises:
Ruddiness produces district, this red filter district adjacent and relatively this center between this first angular range and multiple red light quantum point that distributes;
Green glow produces district, this green filter district adjacent and relatively this center between this second angular range and multiple green light quantum point that distributes; And
Blue light produces district, this blue filter district adjacent and relatively this center between this angular extent and this quantum dot of distribution-free.
10. projection arrangement as claimed in claim 3, it is characterized in that, this excitation beam is ultraviolet light, and this is excited light beam and comprises red Stimulated Light, blue Stimulated Light and green Stimulated Light.
11. projection arrangements as claimed in claim 10, it is characterized in that, this beam splitting system comprises:
Light splitting piece, between this excitation source and this transparent plate, wherein this ultraviolet light penetrates this light splitting piece and this coloured light incident produces district is excited by this mixed light that light beam forms with output, and this light splitting piece reflects this mixed light; And
Catoptron, in order to reflection through this mixed light of this light splitting piece to this colour wheel district.
12. projection arrangements as claimed in claim 10, is characterized in that, this coloured light produces district and comprises:
Ruddiness produces district, this red filter district adjacent and relatively this center between this first angular range and multiple red light quantum point that distributes;
Green glow produces district, this green filter district adjacent and relatively this center between this second angular range and multiple green light quantum point that distributes; And
Blue light produces district, this blue filter district adjacent and relatively this center between this angular extent and multiple blue light quantum point that distributes.
CN201410484091.0A 2014-09-22 2014-09-22 Projection device CN104267569A (en)

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