CN104991407A - Light source system, lighting device and projection device - Google Patents
Light source system, lighting device and projection device Download PDFInfo
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- CN104991407A CN104991407A CN201510306208.0A CN201510306208A CN104991407A CN 104991407 A CN104991407 A CN 104991407A CN 201510306208 A CN201510306208 A CN 201510306208A CN 104991407 A CN104991407 A CN 104991407A
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/141—Beam splitting or combining systems operating by reflection only using dichroic mirrors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/08—Sequential recording or projection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
- H04N9/3114—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
Abstract
The invention discloses a light source system, a lighting device and a projection device. The light source system comprises a color wheel and a light path merging system. The color wheel is used for receiving at least two incident light beams at different positions and correspondingly outputting at least two emergent light beams. The light path merging system is used for merging the light paths of the at least two emergent light beams. The color wheel is provided with a first area which receives first incident light and performs wavelength conversion on the first incident light in order to produce first emergent light. By adopting the scheme, the number of the color wheel is reduced substantially, the size of the light source system is reduced effectively, and the cost of the light source system is lowered effectively.
Description
The application is applicant is 201110355290.8 in the application number that on November 10th, 2011 submits, and denomination of invention is the divisional application of " a kind of light-source system, lighting device and projection arrangement ".
Technical field
The present invention relates to optical field, particularly relate to a kind of light-source system, lighting device and projection arrangement.
Background technology
Polychromatic source is widely used in the various application scenario such as Projection Display and light of stage.As shown in Figure 1, in a kind of light-source system of prior art, the exciting light that exciting light sources 102 produces incides on colour wheel 104 after lens 103 optically focused.Colour wheel 104 is along the circumferential direction respectively arranged with multiple fluorescent powder district, such as green light fluorescent powder district, red light fluorescent powder district and blue light fluorescent powder district.Fluorescence colour wheel 104 rotates under the driving of drive unit 105, the above-mentioned zone on colour wheel 104 is made to be alternately disposed on the transmission path of the exciting light that exciting light sources 102 produces, and then convert exciting light incident thereon to green glow, ruddiness or blue light, form a sequence of colored lights.Above-mentioned sequence of colored lights is further used for follow-up Projection Display.
The source color image that screen produces switches in the integrating effect in human eye fast on screen in the image of different colours.If the switch speed of the image of different colours on screen is inadequate, then can cause color breakup (color breakup) phenomenon, namely along with the movement in nictation or the visual field, spectators can see monochromatic light instantaneously.In such scheme, this switch speed is directly proportional to the rotating speed of the drive unit 105 driving colour wheel 104 to rotate.Because the speed of drive unit 105 limits, color breakup phenomenon cannot be solved.
As shown in Figure 2, in the light-source system of another kind of prior art, three groups of three beams exciting light 201A, 201B and 201C that independently exciting light sources (not shown) produces incide three respectively and scribble on colour wheel 202A, 202B and 202C of the fluorescent powder of different colours, excite the fluorescent powder on corresponding separately colour wheel 202A, 202B and 202C respectively, and then produce the Stimulated Light of three beams different colours.This three beams Stimulated Light carries out light path merging by light splitting optical filter 203B and 203C, and is collected by light collecting device 204.Because each colour wheel 202A, 202B and 202C only produce the light of solid color, its wavelength converting characteristic does not change in time, therefore only needs alternately to open and close corresponding exciting light sources and can obtain a sequence of colored lights.But, in such scheme, need use three colour wheels 202A, 202B and 202C, make the volume of light-source system become large, be unfavorable for the miniaturization realizing light-source system, add the cost of light-source system simultaneously.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of light-source system, lighting device and projection arrangement, fully to reduce colour wheel quantity, and then reduces light-source system volume, and reduces the cost of light-source system.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of light-source system, comprise colour wheel and light path combination system.Colour wheel is used for receiving at least two bundle incident lights at diverse location, and corresponding output at least two bundle emergent lights.Light path combination system is used for carrying out light path merging to this at least two bundles emergent light.Colour wheel is provided with first area, and first area receives the first incident light, and carries out wavelength convert to the first incident light, to produce the first emergent light.
Wherein, colour wheel is provided with second area further, second area receives the second incident light, and carries out transmission or reflection when not carrying out wavelength convert to the second incident light, to produce the second emergent light.
Wherein, colour wheel is provided with further the 3rd region, the 3rd areas accept the 3rd incident light, and wavelength convert is carried out to the 3rd incident light, to produce the 3rd emergent light.
Wherein, colour wheel is provided with second area further, second area receives the second incident light, and carries out wavelength convert to the second incident light, to produce the second emergent light.
Wherein, colour wheel is provided with further the 3rd region, the 3rd areas accept the 3rd incident light, and wavelength convert is carried out to the 3rd incident light, to produce the 3rd emergent light.
Wherein, first area receives the second incident light at the receiving position different from the first incident light further, and wavelength convert is carried out to the second incident light, to produce second emergent light identical with the first emergent light color, light path combination system filters the first emergent light and the second emergent light respectively, produce the 3rd emergent light and the 4th emergent light of different colours with correspondence, and light path merging is carried out to the 3rd emergent light and the 4th emergent light.
Wherein, the first emergent light and the second emergent light are gold-tinted or green-yellow light, and the 3rd emergent light is green glow, and the 4th emergent light is ruddiness.
Wherein, the hot spot that the first incident light and the second incident light are formed on colour wheel acts on first wave length transition zone along concentric circular path, and wherein the diameter of the circular path of the first incident light and the second incident light is identical or different.
Wherein, colour wheel is provided with second area further, second area receives the second incident light, second area carries out wavelength convert to the second incident light or carries out transmission or reflection when not carrying out wavelength convert to the second incident light, to produce the 5th emergent light, light path merges device and carries out light path merging to the 3rd emergent light, the 4th emergent light and the 5th emergent light.
Wherein, light path combination system comprises at least one light splitting optical filter, at least part of spectral components of the emergent light in this at least two bundles emergent light of light splitting filter transmission and at least part of spectral components of another emergent light reflected in this at least two bundles incident light, to carry out light path merging to two bundle emergent lights.
Wherein, light path combination system comprises a blooming piece, blooming piece is provided with through hole, an incident light via through holes in this at least two bundles incident light incides colour wheel, colour wheel carries out scattering and reflection to the incident light of incidence, to produce the emergent light of scattered light form, blooming piece reflects the emergent light of the exterior lateral area inciding the through hole of blooming piece with scattered light form further.
Wherein, light-source system also comprises a catoptron, an incident light at least two bundle incident lights incides colour wheel after catoptron reflection, colour wheel this incident light to incidence carries out scattering and reflection, to produce the emergent light of scattered light form, the emergent light of this scattered light form is from the outside outgoing of catoptron to light path combination system.
Wherein, light-source system comprises at least two light supply apparatuses and a control device further, and at least two light supply apparatuses produce the correspondence one at least two bundle incident lights respectively, and control device independently controls opening and closing and the luminous intensity of at least two light supply apparatuses.
Wherein, blooming piece is the light splitting optical filter being provided with through hole, the supplementary light of this light splitting optical filter is incided in the further transmission of this light splitting optical filter without colour wheel, and this supplementary light and the emergent light of exterior lateral area of the through hole inciding this light splitting optical filter are carried out light path merging.
Wherein, blooming piece is light splitting optical filter, the emergent light of scattered light form is from the outside outgoing of catoptron to this light splitting optical filter, the supplementary light of this light splitting optical filter is incided in the further transmission of this light splitting optical filter without colour wheel, and this supplementary light and the emergent light inciding this light splitting optical filter from the outside of catoptron are carried out light path merging.
Wherein, light path combination system receives the supplementary light inciding light path combination system without colour wheel further, and this at least two bundles emergent light that supplementary light and color wheel exports by light path combination system further carries out light path merging.
Wherein, light-source system comprises at least three light supply apparatuses and a control device further, at least three light supply apparatuses produce the correspondence one at least two bundle incident lights and supplementary light respectively, and control device independently controls opening and closing and the luminous intensity of at least three light supply apparatuses.
Wherein, light-source system comprises drive unit further, and drive unit, for driving colour wheel, acts on colour wheel along predetermined path respectively with the hot spot making at least two bundle incident lights be formed on colour wheel.
Wherein, drive unit is wheelwork, acts on colour wheel respectively with the hot spot making this at least two bundles incident light be formed on colour wheel along circular path.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of projection arrangement, this projection arrangement comprise in above-mentioned light-source system any one.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of lighting device, this lighting device comprise in above-mentioned light-source system any one.
The invention has the beneficial effects as follows: the present invention can fully reduce colour wheel quantity, effectively reduces the volume of light-source system, also significantly reduces the cost of light-source system simultaneously.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of prior art light-source system;
Fig. 2 is the structural representation of another kind of prior art light-source system;
Fig. 3 is the structural representation of the first embodiment of light-source system of the present invention;
Fig. 4 is the front view of the colour wheel of the light-source system shown in Fig. 3;
Fig. 5 is the structural representation of the second embodiment of light-source system of the present invention;
Fig. 6 is the front view of the colour wheel of the light-source system shown in Fig. 5;
Fig. 7 is the fluorescence spectrum of the colour wheel of the light-source system shown in Fig. 5 and the optical filtering spectral line schematic diagram of light splitting optical filter;
Fig. 8 is the structural representation of the light path combination system of the 3rd embodiment of light-source system of the present invention;
Fig. 9 is the structural representation of the 4th embodiment of light-source system of the present invention;
The structural representation of the 5th embodiment of Figure 10 light-source system of the present invention;
The structural representation of the 6th embodiment of Figure 11 light-source system of the present invention;
The structural representation of the 7th embodiment of Figure 12 light-source system of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 3, the first embodiment of light-source system of the present invention comprises three light sources (not shown), colour wheel 302, light path combination system 303, light collecting device 304 and drive units 305.
Three light source correspondences produce three beams incident light 301A, 301B and 301C.Colour wheel 302 receives this three beams incident light 301A, 301B and 301C at diverse location, and corresponding output three beams emergent light (sign).Light path combination system 303 carries out light path merging to this three beams emergent light, and light collecting device 304 is collected and carried out this three beams emergent light after light path merging through light path combination system 303, for follow-up Projection Display or other application.
As shown in Figure 4, in the present embodiment, colour wheel 302 is provided with three and arranges with one heart and mutually nested circular region 402A, 402B and 402C.Incident light 301A, 301B and 301C correspondence incides on region 402A, 402B and 402C, and particular location is as shown in hot spot 401A, 401B and 401C.Drive unit 305 is a wheelwork, for driving colour wheel 302 to rotate, hot spot 401A, 401B and 401C that incident light 301A, 301B and 301C are produced on colour wheel 302 act on region 402A, 402B and 402C of colour wheel 302 respectively along circular path.In other embodiments, region 402A, 402B and 402C also can be the belt-like zone that be arranged in parallel or take other suitable set-up modes.Now, drive unit 305 is linear translation device or other suitable drive units, and linearly path or other predefined paths act on colour wheel 302 respectively for hot spot 401A, 401B and 401C that incident light 301A, 301B and 301C are produced on colour wheel 302.Hot spot 401A, 401B and 401C of producing on colour wheel 302 due to incident light 301A, 301B and 301C act on colour wheel 302 along predefined paths, avoid the temperature that incident light 301A, 301B and 301C long duration of action causes in the same position of colour wheel 302 too high.
In the present embodiment, region 402A is provided with red light wavelength transition material, so that the incident light 301A wavelength convert incided on it is become ruddiness, region 402B is provided with blue light wavelength transition material, so that the incident light 301B wavelength convert incided on it is become blue light, region 402C is provided with green wavelength transition material, so that the incident light 301C wavelength convert incided on it is become green glow.In the present embodiment, material for transformation of wave length comprise fluorescent powder, quanta point material and other can realize any materials of wavelength convert function.
In the present embodiment, light path combination system 303 comprises completely reflecting mirror 303A and light splitting optical filter 303B, 303C.The ruddiness that region 402A exports incides light splitting optical filter 303B after completely reflecting mirror 303A reflects, and incides light splitting optical filter 303C after light splitting optical filter 303B transmission, then incides light collecting device 304 after light splitting optical filter 303C transmission.The blue light that region 402B exports incides light splitting optical filter 303C after light splitting optical filter 303B reflects, then incides light collecting device 304 after light splitting optical filter 303C transmission.The green glow that region 402C exports incides light collecting device 304 after light splitting optical filter 303C reflects, and thus achieves the light path merging that above-mentioned three beams exports light.In the present embodiment, light collecting device 304 can be any suitable optical element such as lens or integrating rod.In other embodiments, completely reflecting mirror 303A also can by can reflect red light splitting optical filter replace.Because the spectral range of the output light produced by wavelength convert mode is relatively wide, when causing showing, color saturation is relatively low, therefore above-mentioned light splitting optical filter can be arranged to transmission or the corresponding partial spectrum component exporting light of reflection, to modify the spectral range exporting light, and then meet color saturation requirement when showing.
In the various embodiments of the invention, all employ light splitting optical filter or light splitting filter set as light path combination system.It utilizes the difference of optical wavelength in each light path, by the transmittance and reflectance of light splitting optical filter to different light paths glazing, the light in each light path is all projected light collecting device; And the light in some light paths is transmitted on a light splitting optical filter or reflected, and can design arbitrarily.Such as in a first embodiment, the position of red light wavelength transition material and green wavelength transition material can be exchanged mutually, now only needs the transmission and reflection characteristic of corresponding each optical filter of adjustment, just still can realize the function that identical light path merges.Concrete, completely reflecting mirror 303A needs redesign to become reflect green light, and light splitting optical filter 303B needs redesign to become reflect red transmit green simultaneously, and light splitting optical filter 303C needs redesign to become reflect red transmit blue and green glow simultaneously.Therefore, in all embodiments of the invention, in each light path, different colours light is by the concrete optical texture of light path combination system, is all the example enumerated for convenience of description, does not limit and use other the light splitting optical filter that utilizes to carry out the optical texture of light path merging.
Further, in other embodiments, the quantity in the region on colour wheel 302 and the material for transformation of wave length on it can be arranged arbitrarily according to display needs.Such as, by arranging the quantity in the region on colour wheel 302 and the material for transformation of wave length on it, the emergent light that colour wheel 302 can be made to export can be at least both combination in any in green glow, ruddiness and blue light.In addition, any one in above-mentioned zone 402A, 402B and 402C of colour wheel 302 can be arranged to photic zone, to carry out transmission when not carrying out wavelength convert to incident ray incident thereon.Such as, region 402B can be replaced to photic zone.Now, incident light 301B is blue light, and by region 402B transmission, then the ruddiness produced by light path combination system 303 and region 402A and 402C and green glow carry out light path merging.Region 402B can be provided with scattering material or other scattering mechanisms further, to carry out eliminating coherence to the blue light of incidence.
In the present embodiment, because ruddiness, blue light and the green glow shown exports by same color wheel 302, therefore substantially reduce colour wheel quantity, efficiently reduce the volume of light-source system, also significantly reduce the cost of light-source system simultaneously.Now, when needs produce sequence of colored lights, only need to utilize control device to control three light sources, alternately produce incident light 301A, 301B and 301C fast to make three light sources and can produce sequence of colored lights, and then effectively can avoid the generation of color breakup phenomenon.
In the present embodiment, semiconductor light sources for excitated red and exciting light that is green wavelength transition material, such as light emitting diode (Light Emitting Diode, or laser diode (Laser Diode LED), LD), its emission wavelength can be that wavelength is more than or equal to 320nm and is less than or equal to the ultraviolet light of 420nm, also can be the blue light being more than or equal to 420 and being less than or equal to 480nm.
As shown in Figure 5, the second embodiment of light-source system of the present invention comprises three light sources (not shown), colour wheel 502, light path combination system 503, light collecting device 504 and drive units 505.
As shown in Figure 6, the difference part of the light-source system shown in the light-source system of the present embodiment and Fig. 3-4 is, colour wheel 502 is provided with region 602A, and incident light 501A and 501C incides the diverse location of region 602A, and particular location is as shown in hot spot 601A and 601C.Incident light 501A incident thereon is become two bundle emergent lights of same color by region 602A with 501C wavelength convert, be filtered into the other two bundle emergent lights of different colours subsequently, and carry out light path merging by light path combination system 503.Specifically, in the present embodiment, region 602A is provided with green-yellow light material for transformation of wave length, to convert incident light 501A and 501C to green-yellow light respectively.Wherein, the green-yellow light that incident light 501A converts to incides completely reflecting mirror 503A, and incides light splitting optical filter 503B after being reflected by completely reflecting mirror 503A, and the green-yellow light that incident light 501C converts to incides light splitting optical filter 503C.In the present embodiment, hot spot 601A and 601C can act on region 602A along concentric circular path.Wherein, the diameter of the respective circular path of hot spot 601A and 601C can be identical or different, the latter has higher fluorescence conversion efficiency than the former, this is because: when two hot spots act on the circular path of same diameter, two heats exciting hot spot excitation wavelength transition material to produce all are distributed on this circular path, and its heat and temperature can add up; And when on two circular concentric paths that two hot spots act on different-diameter respectively, two heats exciting hot spot excitation wavelength transition material to produce are distributed on these two circular paths, low when the temperature on fluorescence conversion material acts on the circular path of same diameter than two hot spots.
As shown in Figure 7, wherein curve 701 is the curve of spectrum of green-yellow light, and curve 702 is the optical filtering curve of light splitting optical filter 503B, and curve 703 is the optical filtering curve of light splitting optical filter 503C.As shown in Figure 7, green component (being more than or equal to 500nm and the spectral range being less than or equal to 570nm corresponding to being about) the optical filter 503B that is split of the green-yellow light that incident light 501A converts to is reflected as parasitic light and can not be collected device 504 and collects, and red light component (being more than or equal to 580nm and the spectral range being less than or equal to 680nm corresponding to being about) the optical filter 503B that is split is transmitted to light splitting optical filter 503C, and through light splitting optical filter 503C transmission, and then export ruddiness to light collecting device 504.The optical filter 503C transmission that is split of the red light component of the green-yellow light that incident light 501C converts to becomes parasitic light and can not be collected device 504 and collect, and the green component optical filter 503C that is split reflects, and then exports green glow to light collecting device 504.In other embodiments, incident light 501A and 501C also can carry out producing gold-tinted after wavelength convert through region 602A, and is filtered into ruddiness and green glow through light splitting optical filter 503B and light splitting optical filter 503C respectively.
From the explanation of Fig. 7, light splitting optical filter 503A and 503C, function luminous in different light paths is merged except having, also by the fractional transmission of the light incided on it or reflection, the original luminescent spectrum that material for transformation of wave length sends is filtered, makes its color more can meet actual request for utilization.Such as in the present embodiment, the chromaticity coordinates of the original spectrum 701 of yellow green material for transformation of wave length is (0.414,0.548), through the filtration of above-mentioned light splitting optical filter 503A and 503C, the chromaticity coordinates of the green glow obtained respectively is (0.323,0.624), the chromaticity coordinates of ruddiness is (0.65,0.35).In the color standard of Rec 709, the reference color coordinate of green glow is (0.3,0.6), and the reference color coordinate of ruddiness is (0.0.64,0.33).The color of the light after obvious filtration is closer to mark color.What deserves to be explained is, in general sense to " filtration " of light refer to allow the effective spectral energy of part through, all the other spectral energies are reflected or absorbed as invalid light, but in the present invention, a certain primary light is " filtered " through during light splitting optical filter in light path combination system, refer to and utilize this light splitting optical filter that effective for the part of this primary light spectral energy is directed to gathering-device, all the other invalid spectral energies then can not be collected device and collect; And effectively spectral energy is reflected or transmission on this light splitting optical filter, determined by the optical texture of concrete light path combination system.
In addition, identical with the embodiment shown in Fig. 3-4, colour wheel 502 is provided with region 602B further, and incident light 501B incides region 602B, and particular location is as shown in hot spot 601B.Region 602B carries out wavelength convert to incident light 501B or carries out transmission when not carrying out wavelength convert to incident light 501B, to export blue light.The blue light that region 602B exports reflects through light splitting optical filter 503B, then through light splitting optical filter 503C transmission, carries out light path merging with above-mentioned ruddiness and green glow.In other embodiments, above-mentioned ruddiness, green glow and blue light can be the output light combinations of other different colours.
As shown in Figure 8, the light path combination system of the 3rd embodiment of light-source system of the present invention comprises completely reflecting mirror 803A, 803B and light splitting optical filter 803C, 803D.The difference part of the light path combination system in the light path combination system of the present embodiment and above-described embodiment is, by the suitable setting of said elements, the light path of the present embodiment can be made to be not limited to be arranged in same plane, and then enhance the dirigibility of light path design.
As shown in Figure 9, the 4th embodiment of light-source system of the present invention comprises three light sources (not shown), colour wheel 902, light path combination system 903, light collecting device 904 and drive units 905.The difference of the light-source system shown in the light-source system of the present embodiment and Fig. 5-7 is, incident light 901A and 901C incides on colour wheel 902, and supplement light 901B (such as, blue light) be directly incident on light path combination system 903 without colour wheel 902 effect, and through light splitting optical filter 903A and 903B transmission, and then carry out light path merging with the emergent light (such as, ruddiness and green glow) that incident light 901A and 901C produces through the wavelength convert effect of colour wheel 902 and the filter action of light splitting optical filter 903A and 903B.In the present embodiment, supplement light 901C and be directly incident on light path combination system 903 without colour wheel 902 effect, the design of colour wheel 902 can be simplified, the volume of colour wheel 902 can be reduced simultaneously, be conducive to realizing miniaturization.The incidence of the supplementary light 901C of the present embodiment is equally applicable to the light-source system shown in Fig. 3-4.
As shown in Figure 10, the 5th embodiment of light-source system of the present invention comprises three light sources (not shown), colour wheel 1002, light path combination system 1003, light collecting device 1004 and drive units 1005.The difference of the light-source system shown in the light-source system of the present embodiment and Fig. 9 is, incident light 1001A and 1001C incides on colour wheel 1002 respectively after light splitting optical filter 1003A and 1003B transmission, back into being mapped to light splitting optical filter 1003A and 1003B after the emergent light carrying out wavelength convert generation through colour wheel 1002 couples of incident light 1001A and 1001C is reflected by colour wheel 1002, and carry out light path merging through light splitting optical filter 1003A and 1003B and supplementary light 1001B.
In the present embodiment, colour wheel 1002 exports emergent light with reflection mode, makes light-source system can meet different light path design demands, and then improves the dirigibility of light-source system.
What deserves to be explained is, the structure of the structure of the colour wheel 902 shown in Fig. 9 and the colour wheel 1002 shown in Figure 10 is different.In the embodiment shown in fig. 9, the exit facet of stimulated luminescence and the plane of incidence of exciting light lay respectively at the both sides of material for transformation of wave length, and in the embodiment shown in fig. 10, the exit facet of stimulated luminescence and the plane of incidence of exciting light are positioned at the same side of material for transformation of wave length, the former is called transmission-type colour wheel, and the latter is called reflective colour wheel.Transmission-type colour wheel has transparent or semitransparent base material, makes exciting light can penetrate and incide optical wavelength conversion material, and stimulated luminescence can penetrate and go out to shoot out at least partly simultaneously.Reflective colour wheel is provided with reflection horizon at the be excited another side in face of material for transformation of wave length, and the such as aluminium sheet of catoptron or plating high reverse--bias silverskin, the stimulated luminescence that material for transformation of wave length is launched all goes out to shoot out from the one side be excited.
Although transmission-type colour wheel and reflective colour wheel have different optical textures, the embodiment of comparison diagram 9 and Figure 10 can be found out, both can use in the present invention.Further, both can also combinationally use, and namely inciding on same colour wheel at least two bundle incident lights, a branch of is transmission-type, and another bundle is for reflective; Corresponding, colour wheel also exists simultaneously the transparent/translucent substrate of transmission-type and reflective reflection horizon.By the description of preceding embodiment, one of ordinary skill in the art can realize transmission-type and reflective combinationally using, and therefore the present invention no longer enumerates embodiment and repeats.
The problem of the fifth embodiment of the present invention is as shown in Figure 10, when hope is carried out scattering by being arranged at the diffusion material on colour wheel 1002 to the blue light of incidence and reflects and obtain scattered light, because light scattering process can not make the wavelength emission of light change, and light splitting optical filter 1003A with 1003C is by having carried out being separated incident light and emergent light to the transmittance and reflectance of different wave length, therefore scattered light can not be reflected by 1003A and 1003C, but directly transmission and can not systematic collection be collected.6th and the 7th embodiment of the present invention solves this problem.
As shown in figure 11, the 6th embodiment of light-source system of the present invention comprises three light sources (not shown), colour wheel 1102, light path combination system 1103 and drive units 1105.The difference of the light-source system shown in the light-source system of the present embodiment and Figure 10 is, the through hole of incident light 1101A on light splitting optical filter 1103A incides colour wheel 1102, and carry out scattering and reflection by the scattering material be arranged on colour wheel 1102 when not carrying out wavelength convert, to produce the emergent light of scattered light form.Make use of the expansion of the optical extend of light beam after scattering, the emergent light of the exterior lateral area inciding the through hole of light splitting optical filter 1103A with scattered light form is reflexed to light splitting optical filter 1103B by light splitting optical filter 1103A, achieves being separated of the emergent light of incident light and most of scattered light form.This emergent light is through light splitting optical filter 1103B transmission.Incident light 1101C incides colour wheel 1102 after light splitting optical filter 1103B transmission, and produces another emergent light after carrying out wavelength convert by colour wheel 1102.This another emergent light, after colour wheel 1102 reflects, reflects through light splitting optical filter 1103B further.Supplement light 1101B then through light splitting optical filter 1103A, 1103B transmission, to restraint emergent light carry out light path merging with above-mentioned two.In the present embodiment, incident light 1101A can be guided on colour wheel 1102 effectively by the through hole arranged on light splitting optical filter 1103A, and fully be reflected the scattered light reflected through colour wheel 1102 by the exterior lateral area of the through hole of light splitting optical filter 1103A.In a preferred embodiment, the via area of light splitting optical filter 1103A is less than 1/4 of the reflective surface area of light splitting optical filter 1103A.In other embodiments, the light splitting optical filter 1103A being provided with through hole is equally applicable to incident light and the emergent light that need carry out wavelength convert through colour wheel 1102.Further, when not needing transmission to supplement light 1101B, light splitting optical filter 1103A also can be replaced by the catoptron of band through hole or other suitable blooming pieces.
As shown in figure 12, the 7th embodiment of light-source system of the present invention comprises three light sources (not shown), colour wheel 1202, light path combination system 1203 and drive units 1205.Be similar to the 6th embodiment, after also utilizing scattering in the present embodiment, the expansion of the optical extend of light beam is separated the emergent light of incident light and most of scattered light form.The difference of the light-source system shown in the light-source system of the present embodiment and Figure 10 is, incident light 1201A incides colour wheel 1202 after catoptron 1203A reflects, and carry out scattering and reflection by the diffusion material be arranged on colour wheel 1202 when not carrying out wavelength convert, to produce the emergent light of scattered light form.The emergent light of this scattered light form goes out to shoot out outside catoptron 1203A, and reflection occurs at light splitting optical filter 1203B and at light splitting optical filter 1203C, transmission occurs.Incident light 1201C incides colour wheel 1202 after light splitting optical filter 1203C transmission, and carries out wavelength convert by colour wheel 1202 and produce another emergent light.This another emergent light, after colour wheel 1202 reflects, reflects through light splitting optical filter 1203C further.Supplement light 1201B then through light splitting optical filter 1203B, 1203C transmission, to restraint emergent light carry out light path merging with above-mentioned two.In a preferred embodiment, the projected area of catoptron 1203A on colour wheel 1202 is less than 1/4 of the projected area of light splitting optical filter 1203B on colour wheel 1202.In other embodiments, the combination of catoptron 1203A and light splitting optical filter 1203B is equally applicable to incident light and the emergent light that need carry out wavelength convert through colour wheel 1102.Further, when not needing transmission to supplement light 1201B, light splitting optical filter 1203B also can be replaced by catoptron or other suitable blooming pieces.
What deserves to be explained is, incident light beam strikes is on colour wheel, no matter be that scattering or excitation wavelength transition material generation stimulated luminescence occur, the light beam of transmitting is all dispersed, and merges after all needing to utilize collimation lens or lens combination to collimate in actual applications with other light path again.Because this is the conventional technological means in this area, at the schematic diagram of all embodiments of the present invention with in illustrating, do not describe collimation lens or lens combination and directly employ stimulated luminescence or the scattered light of collimation, this does not limit the use of related optical original paper.
In the present invention, the switch of each light path and luminous intensity can independently control.Be light source according to LED or LD, then because semiconductor light sources can High Speed Modulation, the emergent light of light-source system of the present invention can become a monochromatic sequence.This monochromatic light sequence can be carried out synchronous with light valve (such as the dmd chip of TI company) and then realize Projection Display.
Specifically, obtain if wish a R-G-B-R-G-B-... monochromatic light time series, then within the ruddiness monochromatic light time period, the light source opened corresponding to ruddiness (excites the excitation source of the red wavelength transition material on colour wheel, or ruddiness monochrome supplements light source), and close other light source; Ruddiness section terminate green glow section start time, the light source corresponding to closedown the light source opened corresponding to green glow, the like.
In actual applications, in order to improve the brightness of projection, need to introduce white light in monochromatic light sequence, such as R-G-B-Bai-R-G-B-Bai ... light sequences.In this case, for monochromatic time periods such as RGBs, still that corresponding light source is opened and closed other monochromatic light light source simultaneously, and when the time period of white light starts, open the light source corresponding to RGB three kinds of colors simultaneously, three kinds of colors obtain white light emergent light after light path combination system merges, when the time period of white light terminate the ruddiness time period start time, close green glow and the light source corresponding to blue light, and keep the light source corresponding to ruddiness to open, the like.Similar with it, green glow and ruddiness can be utilized simultaneously to open and to realize sodium yellow, blue light and green glow are opened simultaneously and are realized cyan light, blue light and ruddiness are opened simultaneously and are formed purplish red coloured light, RGB light is opened as fully loaded half obtains white light of a half intensity etc. simultaneously, has different control models for different application.
Therefore, present invention also offers a kind of projection arrangement, it uses any one light-source system above-mentioned.Except obtaining the light sequence of different sequential, the present invention by independently control to each light source, consecutive variations in the specific colour gamut of the color that can also realize final emergent light in CIE1931 gamut map.The chromaticity coordinates on each summit of this colour gamut is exactly the chromaticity coordinates of monochromatic light in CIE1931 in each light path.By controlling brightness luminous in each light path, the chromaticity coordinates of the mixed light after merging can be made to change; Specifically, improve monochromatic brightness in some light paths, the chromaticity coordinates of mixed light can be made to drift about to the direction of this monochromatic chromaticity coordinates, reduce this monochromatic brightness and the chromaticity coordinates of mixed light then can be made to drift about to the opposite direction of this monochromatic chromaticity coordinates.
Therefore, present invention also offers a kind of lighting device.Described lighting device comprises at least two light sources, the light that these two light sources send incide any one light-source system above-mentioned and obtain light path merge after mixed light as emergent light.This emergent light directly can be used as lighting source, and the projection optical system of rear end or collimating optical system also can be coordinated to obtain the field of illumination of given shape, and the use of pattern disk also can be coordinated in target illumination field to obtain specific pattern on pattern disk.Coordinate light source independence control, this lighting device can also obtain the emergent light of different colours, and the color of emergent light can in certain gamut range consecutive variations.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a light-source system, is characterized in that, comprising:
Colour wheel, described colour wheel is provided with first area and second area, described first area receives the first incident light, and wavelength convert is carried out to described first incident light, to produce the first emergent light, described second area receives the second incident light, and carries out wavelength convert to described second incident light or carry out transmission or reflection when not carrying out wavelength convert to described second incident light, to produce the second emergent light along the light path outgoing different from described first emergent light;
The hot spot that described first incident light is formed on described colour wheel acts on described first area along the motion path of described colour wheel, and the hot spot that described second incident light is formed on described colour wheel acts on described second area along the motion path of described colour wheel;
Light path combination system, for carrying out light path merging to described first emergent light and described second emergent light.
2. light-source system according to claim 1, is characterized in that,
Described colour wheel is provided with further the 3rd region, described 3rd areas accept the 3rd incident light, and wavelength convert is carried out to described 3rd incident light, to produce along the 3rd emergent light from described first emergent light and all different light path outgoing of the second emergent light;
Described light path combination system carries out light path merging to described first emergent light, described second emergent light and described 3rd emergent light;
The hot spot that wherein said 3rd incident light is formed on described colour wheel acts on described 3rd region along the direction of motion of described colour wheel.
3. light-source system according to claim 1 and 2, is characterized in that, the described motion path along described colour wheel comprises:
Along the circular rotational path of described colour wheel, or along the linear translation path of described colour wheel.
4. light-source system according to claim 1, it is characterized in that, described first area receives the 3rd incident light at the receiving position different from described first incident light further, and wavelength convert is carried out to described 3rd incident light, identical from described first emergent light color along the 3rd emergent light with described first emergent light and all different light path outgoing of the second emergent light to produce;
Described light path combination system filters described first emergent light and described 3rd emergent light respectively, produce the 4th emergent light and the 5th emergent light of different colours with correspondence, and light path merging is carried out to described second emergent light, described 4th emergent light and described 5th emergent light.
5. light-source system according to claim 4, is characterized in that, described first emergent light and described 3rd emergent light are gold-tinted or green-yellow light, and described 4th emergent light is green glow, and described 5th emergent light is ruddiness.
6. the light-source system according to claim 4 or 5, it is characterized in that, the hot spot that described first incident light and described 3rd incident light are formed on described colour wheel acts on described first wave length transition zone along concentric circular path, and the diameter of the circular path of wherein said first incident light and described 3rd incident light is identical or different;
Hot spot that described second incident light is formed on described colour wheel along and the concentric circular path of the hot spot that formed on described colour wheel of described first incident light act on described second wave length transition zone, wherein said second incident light is different with the diameter of the circular path of described first incident light.
7. light-source system according to claim 1, it is characterized in that, described light path combination system comprises at least one light splitting optical filter, at least part of spectral components of the wherein a kind of emergent light in the first emergent light described in described light splitting filter transmission and described second emergent light and reflect at least part of spectral components of another emergent light in described first emergent light and described second emergent light, to carry out light path merging to described first emergent light and described second emergent light.
8. light-source system according to any one of claim 1 to 7, it is characterized in that, described light-source system comprises at least two light supply apparatuses and a control device further, described each light supply apparatus produces an incident light respectively, the opening and closing of at least two light supply apparatuses described in described control device independently controls and luminous intensity, described at least two light supply apparatuses are respectively used to generation first incident light and the second incident light.
9. light-source system according to claim 1, is characterized in that, described light-source system comprises drive unit further, and described drive unit moves along predetermined motion path for driving described colour wheel.
10. a lighting device, is characterized in that, described lighting device comprises the light-source system described in claim 1-9 any one.
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| CN201510306208.0A CN104991407B (en) | 2011-11-10 | 2011-11-10 | Light source system, lighting device and projection device |
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| CN201110355290.8A CN102645826B (en) | 2011-11-10 | 2011-11-10 | Light source system, illuminating device and projecting device |
| CN201510306208.0A CN104991407B (en) | 2011-11-10 | 2011-11-10 | Light source system, lighting device and projection device |
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| CN201510306071.9A Active CN104991406B (en) | 2011-11-10 | 2011-11-10 | Light source system, lighting device and projection device |
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| CN201510306071.9A Active CN104991406B (en) | 2011-11-10 | 2011-11-10 | Light source system, lighting device and projection device |
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| CN101840143A (en) * | 2009-03-19 | 2010-09-22 | 杭州三花科特光电有限公司 | Multi-light source illuminator for projectors |
| WO2010146683A1 (en) * | 2009-06-18 | 2010-12-23 | Ｎｅｃディスプレイソリューションズ株式会社 | Optical unit and projection display device |
| US20110116253A1 (en) * | 2009-11-18 | 2011-05-19 | Takashi Sugiyama | Semiconductor light source apparatus and lighting unit |
| WO2011092841A1 (en) * | 2010-01-29 | 2011-08-04 | Ｎｅｃディスプレイソリューションズ株式会社 | Illumination optical system and projector using same |
| CN102193296A (en) * | 2010-03-18 | 2011-09-21 | 精工爱普生株式会社 | Illumination device and projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107658A (en) * | 2016-11-25 | 2018-06-01 | 深圳市光峰光电技术有限公司 | Light-source system, optical projection system and lighting device |
| CN108107658B (en) * | 2016-11-25 | 2019-10-25 | 深圳光峰科技股份有限公司 | Light-source system, optical projection system and lighting device |
| CN112147836A (en) * | 2019-06-28 | 2020-12-29 | 深圳光峰科技股份有限公司 | Light source system and display device |
| CN112147836B (en) * | 2019-06-28 | 2023-08-04 | 深圳光峰科技股份有限公司 | Light source system and display device |
| US11921410B2 (en) | 2019-06-28 | 2024-03-05 | Appotronics Corporation Limited | Light source system and display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104991406B (en) | 2017-01-25 |
| CN102645826A (en) | 2012-08-22 |
| CN102645826B (en) | 2015-05-27 |
| CN104932187A (en) | 2015-09-23 |
| WO2013067807A1 (en) | 2013-05-16 |
| CN104991406A (en) | 2015-10-21 |
| CN104991407B (en) | 2017-02-01 |
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