CN106154717B - Light supply apparatus and there is its optical projection system - Google Patents

Light supply apparatus and there is its optical projection system Download PDF

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Publication number
CN106154717B
CN106154717B CN201510184672.7A CN201510184672A CN106154717B CN 106154717 B CN106154717 B CN 106154717B CN 201510184672 A CN201510184672 A CN 201510184672A CN 106154717 B CN106154717 B CN 106154717B
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China
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light
optical filter
reflection
stimulated luminescence
wavelength
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CN201510184672.7A
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Chinese (zh)
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CN106154717A (en
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王则钦
郭祖强
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深圳市光峰光电技术有限公司
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Publication of CN106154717A publication Critical patent/CN106154717A/en
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Publication of CN106154717B publication Critical patent/CN106154717B/en

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Abstract

The invention discloses a kind of light supply apparatus, including the Wavelength converter in the excitation source for producing exciting light and the propagation light path for being arranged on exciting light, Wavelength converter includes echo area and wavelength-converting region, wavelength-converting region has the wavelength conversion material for the stimulated luminescence for being used to the exciting light of reception being converted into preset wavelength, and the light supply apparatus further includes:Polarizer, polarization conversion component and the filter set being successively set in the light path between excitation source and Wavelength converter.The invention also discloses a kind of optical projection system.Pass through above-mentioned technical proposal, exciting light can be separated with the light path of stimulated luminescence, compared to the prior art filter wheel need not be set to filter out exciting light in stimulated luminescence, with overall structure is simple, arrangement form is compact, production cost is low and high reliability.

Description

Light supply apparatus and there is its optical projection system

Technical field

The present invention relates to projection display technique field, more particularly to a kind of light supply apparatus and there is its optical projection system.

Background technology

In existing projector light source, sequence of colored lights generally is provided using fluorescence colour wheel, by by fluorescence colour wheel Not homochromy section of alternating and be periodically arranged on the propagation path of exciting light, and then excite fluorescence colour wheel using exciting light Wavelength conversion material on not homochromy section, to produce the fluorescence of different colours.However, due to light caused by wavelength conversion material Spectral limit is wider so that the excitation purity deficiency of part fluorescence, and then cause the colour gamut of light source not big enough.Meanwhile because of wavelength convert The surface reflection or excitation of material are incomplete, and the exciting light for having sub-fraction all the time is reflected together with stimulated luminescence Come, this part is reflected the exciting light come and the chromaticity coordinates of stimulated luminescence is deteriorated, and can also cause the colour gamut of light source to reduce.

In some existing solutions, frequently by configuration one with the filter wheel of fluorescence colour wheel synchronous rotary to light Exciting light on road is filtered out, while the spectrum of stimulated luminescence can also be trimmed.Although by increasing synchronous rotary The method of filter wheel solves the problems, such as spectrum trimming, improves quality of colour to a certain extent, but filter wheel and fluorescence The precise synchronization rotation of colour wheel is easily influenced by extraneous factor, and global reliability is relatively low, and the light supply apparatus of this framework Cost is added, is unfavorable for the popularization and application of product.

The above is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that the above is existing skill Art.

The content of the invention

It is a primary object of the present invention to provide a kind of light supply apparatus, it is intended to solve to set because needing in existing light supply apparatus With the filter wheel of fluorescence colour wheel synchronous rotary and cause reliability to reduce and technical problem of high cost.

To achieve the above object, the present invention provides a kind of light supply apparatus, including for produce exciting light excitation source and The Wavelength converter being arranged in the propagation light path of the exciting light, the Wavelength converter includes echo area and wavelength turns Area is changed, the wavelength-converting region has the wavelength convert material for the stimulated luminescence for being used to the exciting light of reception being converted into preset wavelength Material, the light supply apparatus further include:It is successively set in the light path between the excitation source and the Wavelength converter Polarizer, polarization conversion component and filter set, wherein:The light of the polarizer transmission with the first polarization state, and instead Penetrate the light with the second polarization state, first polarization state is identical with the polarization state of the exciting light, second polarization state and First polarization state is vertical;The polarization conversion component will pass through the polarization conversion group twice with a kind of light of polarization state The light of another polarization state vertical with a kind of polarization state is converted into after part;The filter set transmits the exciting light, And the reflection stimulated luminescence.The technical program need not set filter wheel to filter out exciting light in stimulated luminescence, have overall It is simple in structure, arrangement form is compact, production cost is low and high reliability.

Preferably, the excitation source is the blue light solid state light emitter for producing blue wave band light.Using blue wave band light conduct Excitation source compare it is safer with uv excitation light, and light source can between utilize, reduce wavelength convert when loss.

Preferably, the polarization conversion component includes quarter wave plate and diaphragm, and the quarter wave plate is integrally set with the diaphragm Put;Alternatively, the quarter wave plate is separately set with the diaphragm, the quarter wave plate or the diaphragm are set adjacent to the polarizer Put.The polarization state of light is changed using quarter wave plate, light channel structure is simple, and reliability is high, in combination with diaphragm to light beam into Row trimming, can separate exciting light and stimulated luminescence.

Preferably, the filter set includes one first optical filter, and first optical filter reflects the wavelength-converting region The stimulated luminescence produced is encouraged, and transmits the exciting light that the excitation source produces.The technical program using the first optical filter come Exciting light and stimulated luminescence are separated, can realize last outgoing actinic light, the structure is simpler.

Preferably, the light supply apparatus further includes:It is arranged on the light of the stimulated luminescence via first optical filter reflection Reflection device on road;With, the second optical filter in the light path of the light reflected via the polarizer, second optical filter The light that reflection is reflected via the polarizer, and transmit the stimulated luminescence of the reflection device reflection.The technical program passes through Closing light, simple in structure, dependable performance are carried out using reflection device and the second optical filter.

Preferably, the light supply apparatus further includes the 3rd optical filter and/or diffusion sheet, and the 3rd optical filter is arranged on institute State in the light path between the first optical filter and the reflection device, the diffusion sheet is arranged on the polarizer and described second In light path between optical filter.By the colour filter of the 3rd optical filter, the excitation purity of yellow band light can be improved, so as to improve throwing The excitation purity of feux rouges and green light when shadow is shown.

Preferably, the light supply apparatus further includes:4th optical filter, the 4th optical filter are reflected in the stimulated luminescence First band light, and transmit the second band light in the exciting light and the stimulated luminescence;5th optical filter, the described 5th Optical filter reflects the second band light in the stimulated luminescence, and transmits the exciting light.By the 4th optical filter to red ripple Section light carries out repairing color, green band light is carried out by the 5th optical filter to repair color, so as to improve red band light and green band The excitation purity of light, and then improve the excitation purity of yellow band light after closing light.

Preferably, the light supply apparatus further includes:It is arranged in the stimulated luminescence via the 4th optical filter reflection Reflection device in the light path of first band light;The second ripple being arranged in the stimulated luminescence via the 5th optical filter reflection The 6th optical filter in the light path of Duan Guang, the 6th optical filter are reflected in the stimulated luminescence via the 5th optical filter reflection Second band light, and transmit the first band light in the stimulated luminescence of reflection device reflection;Be arranged on via described The 7th optical filter in the light path of the light of polarizer reflection, the 7th optical filter reflection is via polarizer reflection Light, and transmit the second band light and saturating via the 6th optical filter in the stimulated luminescence via the 6th optical filter reflection First band light in the stimulated luminescence penetrated.The technical program is by using reflection device, the 6th optical filter and the 7th optical filter Carry out closing light, simple in structure, dependable performance.

Preferably, the light supply apparatus further includes the light path being arranged between the polarizer and the 7th optical filter On diffusion sheet.The exciting light of concentration is spread using diffusion sheet, forms a uniform area source, the projection matter with higher Amount.

Preferably, the wavelength-converting region is yellow light transition zone;Alternatively, the wavelength-converting region is divided into two sections, respectively It is peripherally disposed feux rouges transition zone and green light transition zone.

Preferably, the echo area is mirror-reflection area.To realize that the exciting light of reception is pressed former polarization state reflects.

Preferably, the light supply apparatus further includes the light being arranged between the filter set and the Wavelength converter Collimating element on road.Collimated by the stimulated luminescence that etendue becomes larger by collimating element, thus can reduce and be excited Luminous loss, to improve the output rating of light and beam quality.

In addition, to achieve the above object, the present invention also provides in a kind of optical projection system, including any of the above-described technical solution The light supply apparatus.

A kind of light supply apparatus provided by the present invention and optical projection system, by between excitation source and Wavelength converter Light path on the light-dividing device that is made of optical elements such as polarizer, polarization converter, filter sets is set, so as to will Exciting light is separated with the light path of stimulated luminescence, compared to the prior art filter wheel need not be set to filter out in stimulated luminescence Exciting light, with overall structure is simple, arrangement form is compact, production cost is low and high reliability.

Brief description of the drawings

Fig. 1 is the structure diagram of the light supply apparatus first embodiment of the present invention;

Fig. 2 is the structure diagram of the light supply apparatus second embodiment of the present invention;

Fig. 3 is the structure diagram of the light supply apparatus 3rd embodiment of the present invention;

Fig. 4 is the structure diagram of the Wavelength converter first embodiment in the light supply apparatus of the present invention;

Fig. 5 is the structure diagram of the Wavelength converter second embodiment in the light supply apparatus of the present invention.

The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.

Embodiment

It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.

The present invention provides a kind of light supply apparatus, and referring to Fig. 1, in the first embodiment, which includes being used to produce The excitation source 101 of raw exciting light and the Wavelength converter 102 being arranged in the propagation light path of the excitation source 101.This reality It is blue wave band light to apply exciting light caused by the excitation source 101 of example, concretely blue light solid state light emitter, such as blue light emitting Diode or blue laser.

Wherein, Wavelength converter 102 includes echo area and wavelength-converting region, and echo area and wavelength-converting region are formed in circle On the base material of tabular or cyclic structure, wavelength convert multistage can be distinguished into along the circumferential direction of base material, when by wavelength convert zoning When being divided into multistage, setting different wavelength conversion material on each section of wavelength-converting region respectively, (wavelength conversion material can be glimmering Luminescent material or nano material), thus, it is possible to the exciting light of reception is converted into preset wavelength stimulated luminescence (preset wavelength Stimulated luminescence refers to as needed to set the color of wavelength conversion material, so that wavelength required for being obtained when it is excited Stimulated luminescence).Referring to Fig. 4, as an example, Wavelength converter 102 includes echo area 102a and yellow light transition zone 102b, reflection Exciting light incident thereon can be pressed former propagation path and reflected by area 102a, and wherein echo area 102b is mirror-reflection area, such as For speculum, therefore the exciting light of reception is pressed into former polarization state and is reflected, yellow light transition zone 102b can be by excitation incident thereon Light is converted to the fluorescence (yellow light stimulated luminescence) of yellow band.It should be noted that yellow light transition zone 102b can also be by green light Transition zone or magenta light transition zone substitute, and thus provide projection or the lighting source that can show full-colour image.In addition, the light Source device 100 further includes the driving device 103 for being arranged on 102 rear of Wavelength converter, the driving device 103 can by motor and Transmission shaft forms, and transmission shaft is connected with Wavelength converter 102 to drive Wavelength converter 102 to be rotated by specific rotation speeds, by In the rotation of Wavelength converter 102, the exciting light time-division illumination from excitation source 101 is changed in echo area 102a and yellow light On area 102b.In addition, driving device 103 can also use any other applicable structure type, such as driving device 103 only to wrap Motor is included, is connected between the output shaft and Wavelength converter 102 of motor.

As shown in Figure 1, the light supply apparatus 100 of the present embodiment further includes and is successively set on excitation source 101 and wavelength convert Polarizer 104, polarization conversion component P and filter set S in light path between device, and the polarizer 104 is neighbouring Excitation source 101 is set, the light-dividing device being made of above polarizer 104, polarization conversion component P and filter set S, can Exciting light is separated with the light path of stimulated luminescence, to be filtered out to the exciting light in stimulated luminescence, so that will not be to emergent light Chromaticity coordinates impact.Specifically, polarizer 104, polarization conversion component P and filtering assembly S are arranged on excitation source 101 In light path between Wavelength converter 102, namely the exciting light from excitation source 101 pass sequentially through polarizer 104, Polarization conversion component P and filter set S, light of the transmission of polarizer 104 with the first polarization state, and reflecting has second to polarize The light of state, and the first polarization state is identical with the polarization state of exciting light, and the second polarization state is vertical with the first polarization state;Polarization conversion Component P will be converted into vertical with a kind of polarization state after polarization conversion component P twice with a kind of light of polarization state The light of another polarization state, plays the role of the polarization state of conversion light;Filter set S transmits exciting light, and reflects stimulated luminescence.

Corresponding with above-mentioned yellow light transition zone 102b in the present embodiment, filter set S includes one first optical filter 105, and And first optical filter 105 reflect by yellow light transition zone 102b excitation produce stimulated luminescence, and transmit excitation source 101 generation Exciting light.In alternate embodiments, polarization conversion component P includes quarter wave plate 107 and diaphragm 108, wherein quarter wave plate 107 with Diaphragm 108 is wholely set or is separately set, for example, quarter wave plate 107 set adjacent to polarizer 104 or Diaphragm 108 is set adjacent to polarizer 104, using quarter wave plate 107 come the polarization state of conversion light, recycles diaphragm 108 to light beam Trimmed, the clear aperature of diaphragm 108 can be set according to the beam size that it to be limited, this is not restricted.With excitation The blue light exciting light that light source 101 produces be linearly polarized light, and to set the polarization state of the linearly polarized light to be said exemplified by P polarization Bright, the exciting light that excitation source 101 produces, which by quarter wave plate 107 is converted to circularly polarized light and reenters, is incident upon Wavelength converter 102 On.With the rotation of Wavelength converter 102, wherein:

The stimulated luminescence produced by yellow light transition zone 102b excitations is reflected when being incident on the first optical filter 105;

Returned by the exciting light that echo area 102a reflects along its incident path, do not change the polarization state of exciting light, reflected The exciting light of area 102a reflections first transmits the first optical filter 105, then is converted to linearly polarized light by quarter wave plate 107, the linear polarization The polarization state for the exciting light that light is produced with excitation source 101 is mutually perpendicular to, i.e., the polarization converted of the linearly polarized light is S-polarization, The exciting light so reflected through echo area 102a can be reflected when being incident on polarizer 104, it is thus achieved that by yellow light The stimulated luminescence that transition zone 102b excitations produce is separated with the light path of the echo area 102a exciting lights reflected;And

By the exciting light of yellow light transition zone 102b reflections, (this usual part exciting light is that the surface of wavelength conversion material is reflected It is not excited what is produced) it is in scattering state, etendue increases more times, therefore the excitation reflected by yellow light transition zone 102b Wide part is subject to the stop of diaphragm 108, by the exciting light after diaphragm 108 by P polarization state and the polarised light group of S-polarization state Into, therefore partly or entirely transmitted when being incident on polarizer 104, it is thus achieved that yellow light transition zone 102b is encouraged The stimulated luminescence of generation is separated with the light path of the yellow light transition zone 102b exciting lights reflected.Therefore changed with reference to above-mentioned yellow light The light path separated structure of the stimulated luminescence that 102b excitations in area produce and the exciting light of echo area 102a reflections, can be by light supply apparatus Exciting light in 100 is separated with the light path of stimulated luminescence, with overall structure is simple, arrangement form is compact, production cost Low and high reliability.Further, since diaphragm 108 can by wavelength-converting region (such as yellow light transition zone 102b) not by Most of exciting light (such as blue light) of absorption blocks, then transmits a part of exciting light by polarizer 104, so that most The exciting light included in the stimulated luminescence exported afterwards is very little, avoids shadow of the exciting light to the purity of the stimulated luminescence of output Ring, substantially increase the excitation purity of the stimulated luminescence of output.

It should be noted that due to above-mentioned polarizer 104, diaphragm 108, quarter wave plate 107 and first optical filter 105 Structure type and it acts as the prior art, and be well known to those skilled in the art, therefore the present invention repeats no more.

For convenience of explanation, the exciting light sent from excitation source 101 is referred to as L0 light below, will be through the first optical filter The stimulated luminescence of 105 reflections is referred to as L1 light, and the exciting light reflected through polarizer 104 is referred to as L2 light.

In practical application, the exit direction of L1 light can be changed by adjusting the angle of inclination of the first optical filter 105, Similarly, the exit direction of L2 light is changed by adjusting the angle of inclination of polarizer 104, such as when 105 He of the first optical filter When the angle of inclination of polarizer 104 is 45 °, i.e., the first optical filter 105 and polarizer 104 are parallel to each other, thus L1 light It is identical with the exit direction of L2 light, it is mutually perpendicular to L0 light.It is respectively perpendicular respectively with L0 light clearly for using L1 light and L2 light Light channel structure, can further save the inner space of light supply apparatus 100, be conducive to reduce the volume of light supply apparatus 100.Should Work as understanding, in other embodiments, the angle of inclination of the first optical filter 105 and polarizer 104 can also be according to required light extraction Make specifically chosen, such as any value between 0~90 °, the invention is not limited in this regard in position.

Further, light supply apparatus 100, which further includes, is arranged between the first optical filter 105 and Wavelength converter 102 Collimating element 106 in light path.L0 light is incident on yellow light transition zone 102b, is excited to change under the action of wavelength conversion material For the stimulated luminescence of yellow band, while the stimulated luminescence is distributed in approximate Lambertian under the action of wavelength conversion material, optics Propagation has become larger many, this partially-excited, which shines to reenter after the collimation of collimating element 106, is incident upon the first optical filter 105, by This can reduce the loss of stimulated luminescence, to improve the output rating of L1 light and beam quality.

In addition, the exciting light reflected from yellow transition zone 102b is in scattering state, etendue increases manyfold, After collimated device 106 collimates, the sectional area of this part exciting light accordingly increases, therefore reflected from yellow transition zone 102b Exciting light is largely stopped by diaphragm 108, so as to greatly reduce the exciting light mixed in L1 light, and then reduces and the color of L1 light is sat Mark impacts.During concrete application, collimating element 106 can be single element lens or the lens being made of multi-disc lens Group.

In the present embodiment, light supply apparatus 100 further includes the light for being arranged on the stimulated luminescence via the reflection of the first optical filter 105 The second optical filter 112 in the light path of road upper reflector part 111 and the exciting light reflected via polarizer 104.Such as Fig. 1 institutes Show, 111 and first optical filter of reflection device, 105 face is set, and the second optical filter 112 is set with 104 face of polarizer, reflection Device 111 can be speculum or optical filter, if reflection device 111 is optical filter, can be selected and the first optical filter 105 identical optical filters, thus, it is possible to which L1 light is reflected by preset path, and the light of the second optical filter 112 and the first optical filter 105 Spectrum transmissison characteristic simultaneously differs, but the second optical filter 112 and the first optical filter 105 may each be with dichroic, the Two optical filters 112 can reflect the exciting light reflected via polarizer 104, and for the stimulated luminescence of the reflection of reflection device 111 Transmission.Thus, by setting 111 and second optical filter 112 of reflection device, thus light supply apparatus 100 can project by L1 light and The white light of L2 light composition.

In addition, light supply apparatus 100 further includes the 3rd optical filter 109 and/or diffusion sheet 110, the 3rd optical filtering can be only set Piece 109 or diffusion sheet 110, can also set the 3rd optical filter 109 and diffusion sheet 110 at the same time, and when concrete application can flexibly select. As shown in Figure 1, exemplified by setting the 3rd optical filter 109 and diffusion sheet 110 at the same time, the 3rd optical filter 109 is arranged on the first optical filtering In light path between piece 105 and reflection device 111, by the way that the 3rd optical filter 109 is arranged on the first optical filter 105 and reflector Between part 111, the excitation purity of feux rouges and green light when can improve the excitation purity of yellow band light, and then improve Projection Display.Compared with Goodly, when Wavelength converter 102 is structure shown in Fig. 5, the 3rd optical filter 109 is preferably notch filtering light piece (Notch Filter), by setting the 3rd optical filter 109 in the output light path of stimulated luminescence, red band light and green will can be produced The light of intersection filters out in color band of light, so that the excitation purity higher of red band light and green band light.Diffusion sheet 110 is set Put in the light path between 104 and second optical filter 112 of polarizer, by by diffusion sheet 110 be arranged on polarizer 104 with Between second optical filter 112, the L2 light of concentration can be spread, form a uniform area source.

Referring to Fig. 2 and Fig. 5, in a second embodiment, which includes excitation source 201, Wavelength converter 202nd, Wavelength converter 202 rotating driving device 203, polarizer 204, polarization conversion component P and filter set are driven S, wherein polarization conversion component P include diaphragm 209 and quarter wave plate 208, and the arrangement form of diaphragm 209 and quarter wave plate 208 can join According to the detailed description of the polarization conversion component P in above-mentioned first embodiment.

The difference of light supply apparatus 100 shown in light supply apparatus 200 and Fig. 1 of the present embodiment is:Wavelength-converting region The stimulated luminescence of two kinds of different wave lengths can be produced, for example Wavelength converter 202 includes echo area 202a, feux rouges transition zone 202b and green light transition zone 202c, that is, wavelength-converting region is divided into peripherally disposed two sections, by being excited to produce Raw red band light and green band light;Correspondingly, filter set S includes two tablet filters, is respectively and feux rouges transition zone Corresponding 4th optical filters 205 of 202b and the 5th optical filter 206 corresponding with green light transition zone 202c, the 4th optical filter 205 with The spectral-transmission characteristics of 5th optical filter 206 differs, and the 4th optical filter 205 is reflected is excited what is produced by feux rouges transition zone 202b Red band light (i.e. first band light), and transmit exciting light and green light transition zone 202c is excited the green band light produced (i.e. Second band light);5th optical filter 206 reflects the green band light that generation is excited by green light transition zone 202c, and transmits excitation Light and feux rouges transition zone 202b are excited the red band light produced.With the rotation of Wavelength converter 202, wherein,

The stimulated luminescence produced by feux rouges transition zone 202b excitations is reflected when being incident on the 4th optical filter 205;

The stimulated luminescence produced by green light transition zone 202c excitations is reflected when being incident on the 5th optical filter 206.

Thus, the red band light that either feux rouges transition zone 202b excitations produce, or green conversion area 202c excitations The green band light of generation, its light path can be separated with the light path of exciting light.

Similar with above-mentioned first embodiment, in order to realize closing light, the light supply apparatus 200 of the present embodiment, which further includes, to be arranged on Via the 4th optical filter 205 reflection stimulated luminescence light path upper reflector part 211, via the 5th optical filter 206 reflection by The 6th optical filter 212 in the light path of exciting light and the in the light path of the exciting light reflected via polarizer 204 the 7th filters Piece 213.Wherein, the 6th optical filter 212 reflects the stimulated luminescence reflected via the 5th optical filter 206, and Transflective device 211 The stimulated luminescence of reflection;7th optical filter 213 reflects the exciting light reflected via polarizer 204, and transmits the 6th optical filter 212 transmissions and the stimulated luminescence of reflection.Reflection device 211 can be speculum or optical filter, and when selecting speculum Cost can be reduced.Also, the 4th optical filter 205, the 5th optical filter 206, the 6th optical filter 212 and the 7th optical filter 213 can be with It is that there is dichroic optical filter, avoids the problem that causing fusing or deformation, reliability higher because absorbing heat.

It is noted that the red band light for being excited to produce can carry out repairing color at least through the 4th optical filter 205, it is excited The green band light of generation can carry out repairing color by the 5th optical filter 206 and the 6th optical filter 212, and when reflection device 211 is During with dichroic optical filter, it can also carry out red band light to repair color, thus improve red band light and green The excitation purity of band of light, and then improve the excitation purity of yellow band light after closing light.

In addition, light supply apparatus 200 is further included in the light path being arranged between 204 and the 7th optical filter 213 of polarizer Diffusion sheet 210, the diffusion sheet 210 can spread the exciting light of concentration, form a uniform area source.And light source dress Put 200 and further include collimating element 207 in the light path being arranged between the 4th optical filter 205 and Wavelength converter 202, it is made With the detailed description that can refer to above-mentioned collimating element 106.

Referring to Fig. 3, the technical solution based on above-mentioned second embodiment proposes 3rd embodiment, specifically, light supply apparatus 300 Mainly include excitation source 301, Wavelength converter 302, the rotating driving device 303 of driving Wavelength converter 302, polarization Device 304, diaphragm 309, quarter wave plate 308, collimating element 307, diffusion sheet 310 and filter set S.Second embodiment and the 3rd Difference lies in the filter set S of the present embodiment only to include one the 8th optical filter 305 for embodiment, also i.e. by above-mentioned 4th optical filter 205 and the 5th the effect of optical filter 206 be integrated, the 8th optical filter 305 is reflected to be swashed by feux rouges transition zone or green light transition zone The stimulated luminescence of generation is encouraged, and transmits exciting light.Compared to the arrangement form of optical element in second embodiment, the present embodiment exists Realize the volume that light supply apparatus 300 is efficiently reduced in the case of sending red band light and green band light, overall structure It is compacter.

Meanwhile in order to realize closing light, the light supply apparatus 300 of the present embodiment, which further includes, to be arranged on via the 8th optical filter 305 The 9th in the light path of the light path upper reflector part 311 of the stimulated luminescence of reflection and the exciting light reflected via polarizer 304 Red band light and green band light can be respectively facing same direction reflection by optical filter 312, reflection device 311, and the 9th filters Piece 312 reflects the exciting light reflected via polarizer 304, and transmits red band light and green band light, is actually saturating Penetrate yellow band light.Compared to above-mentioned second embodiment, the present embodiment also saves the 6th optical filter 212, thus can reduce into This, while improve the reliability of system.

It is noted that with reference to the light supply apparatus 100 of above-mentioned first embodiment, can also be in the transmission light of stimulated luminescence Optical filter is set in road, and the optical filter is between the 8th optical filter 305 and reflection device 311, to improve the color of stimulated luminescence Purity.For example notch filtering light piece (Notch filter) is selected, it can have a common boundary producing in red band light and green band light The light at place filters out, so that the excitation purity higher of red band light and green band light.

Technical solution according to embodiments of the present invention, by being set in the light path between excitation source and Wavelength converter Put the light-dividing device being made of optical elements such as polarizer, polarization conversion component, filter sets, so as to by exciting light with by The light path of exciting light is separated, and compared to the prior art filter wheel need not be set to filter out exciting light in stimulated luminescence, tool Have that overall structure is simple, arrangement form is compact, production cost is low and high reliability, and can also be glimmering to being excited to produce Light spectrum is trimmed, and substantially increases light extraction quality of colour.

The present invention also provides a kind of optical projection system, and in one embodiment, which includes light supply apparatus, display member Part, light source-side optical device, projection-side optical device and control device etc., wherein light supply apparatus are used in the various embodiments described above Light supply apparatus, and remaining part is the prior art.

This optical projection system embodiment includes whole technical solutions of above-mentioned light supply apparatus whole embodiments, the technology reached Effect is also identical, and details are not described herein.

It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made, is directly or indirectly used in other relevant skills Art field, is included within the scope of the present invention.

Claims (12)

1. a kind of light supply apparatus, including for producing the excitation source of exciting light and being arranged in the propagation light path of the exciting light Wavelength converter, it is characterised in that the Wavelength converter includes echo area and wavelength-converting region, the wavelength convert Area has the wavelength conversion material for the stimulated luminescence for being used to the exciting light of reception being converted into preset wavelength, and the light supply apparatus is also Including:
It is successively set on polarizer in the light path between the excitation source and the Wavelength converter, polarization conversion group Part and filter set, wherein:
The light of the polarizer transmission with the first polarization state, and the light with the second polarization state is reflected, first polarization State is identical with the polarization state of the exciting light, and second polarization state is vertical with first polarization state;
The polarization conversion component will be converted into twice after the polarization conversion component with a kind of light of polarization state and institute State a kind of light of the vertical another polarization state of polarization state, the polarization conversion component includes quarter wave plate and diaphragm, and described 1/4 Wave plate is wholely set with the diaphragm;Alternatively, the quarter wave plate is separately set with the diaphragm, the quarter wave plate or the light The neighbouring polarizer of door screen is set;
The filter set transmits the exciting light, and reflects the stimulated luminescence.
2. light supply apparatus as claimed in claim 1, it is characterised in that the excitation source is the blue light for producing blue wave band light Solid state light emitter.
3. light supply apparatus as claimed in claim 1, it is characterised in that the filter set includes one first optical filter, described First optical filter reflects the stimulated luminescence that the wavelength-converting region excitation produces, and transmits the excitation that the excitation source produces Light.
4. light supply apparatus as claimed in claim 3, it is characterised in that the light supply apparatus further includes:It is arranged on via described Reflection device in the light path of the stimulated luminescence of first optical filter reflection;With,
Via the second optical filter in the light path of the light of polarizer reflection, the second optical filter reflection is via described inclined The light of the device that shakes reflection, and transmit the stimulated luminescence of the reflection device reflection.
5. light supply apparatus as claimed in claim 4, it is characterised in that the light supply apparatus further include the 3rd optical filter and/or Diffusion sheet, the 3rd optical filter are arranged in the light path between first optical filter and the reflection device, the diffusion Piece is arranged in the light path between the polarizer and second optical filter.
6. light supply apparatus as claimed in claim 1, it is characterised in that the filter set includes:
4th optical filter, the 4th optical filter reflects the first band light in the stimulated luminescence, and transmits the exciting light With the second band light in the stimulated luminescence;
5th optical filter, the 5th optical filter reflects the second band light in the stimulated luminescence, and transmits the exciting light.
7. light supply apparatus as claimed in claim 6, it is characterised in that the light supply apparatus further includes:
The reflection device being arranged in the light path of the first band light in the stimulated luminescence via the 4th optical filter reflection;
The 6th optical filter being arranged in the light path of the second band light in the stimulated luminescence via the 5th optical filter reflection, The 6th optical filter reflection transmits described anti-via the second band light in the stimulated luminescence of the 5th optical filter reflection First band light in the stimulated luminescence of emitter part reflection;With,
The 7th optical filter being arranged in the light path via the light of polarizer reflection, the 7th optical filter reflection via The light of the polarizer reflection, and transmit the second band light and warp in the stimulated luminescence via the 6th optical filter reflection By the first band light in the stimulated luminescence of the 6th filter transmission.
8. light supply apparatus as claimed in claim 7, it is characterised in that the light supply apparatus, which further includes, is arranged on the polarizer The diffusion sheet in light path between part and the 7th optical filter.
9. the light supply apparatus as any one of claim 3 to 8, it is characterised in that the wavelength-converting region turns for yellow light Change area;It is peripherally disposed feux rouges transition zone and green light conversion respectively alternatively, the wavelength-converting region is divided into two sections Area.
10. such as light supply apparatus described in any item of the claim 1 to 8, it is characterised in that the echo area is mirror-reflection Area.
11. such as light supply apparatus described in any item of the claim 1 to 8, it is characterised in that the light supply apparatus further includes setting The collimating element in light path between the filter set and the Wavelength converter.
12. a kind of optical projection system, it is characterised in that including the light supply apparatus any one of claim 1 to 11.
CN201510184672.7A 2015-04-17 2015-04-17 Light supply apparatus and there is its optical projection system CN106154717B (en)

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CN106647126A (en) * 2016-12-27 2017-05-10 苏州佳世达光电有限公司 Light source apparatus and projection apparatus
CN109100907A (en) * 2017-06-20 2018-12-28 扬明光学股份有限公司 Luminescent system
CN109491187A (en) * 2017-09-13 2019-03-19 深圳光峰科技股份有限公司 Wavelength converter, light-source system and projection device
CN109557752A (en) * 2017-09-26 2019-04-02 深圳光峰科技股份有限公司 Light-source system and projection arrangement
CN109557754A (en) * 2017-09-26 2019-04-02 深圳光峰科技股份有限公司 Light-source system and projection device
CN109557753A (en) * 2017-09-26 2019-04-02 深圳光峰科技股份有限公司 Light-source system and projection arrangement
CN108957733A (en) * 2018-07-24 2018-12-07 苏州佳世达电通有限公司 Fluorescence colour wheel and projector with reflecting element

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