CN102540679A - Light source device, light source generation method and laser projector comprising light source device - Google Patents
Light source device, light source generation method and laser projector comprising light source device Download PDFInfo
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- CN102540679A CN102540679A CN2012100402890A CN201210040289A CN102540679A CN 102540679 A CN102540679 A CN 102540679A CN 2012100402890 A CN2012100402890 A CN 2012100402890A CN 201210040289 A CN201210040289 A CN 201210040289A CN 102540679 A CN102540679 A CN 102540679A
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Abstract
The invention discloses a light source device, a light source generation method and a laser projector comprising the light source device. The light source device comprises light sources comprising a first light source, a second light source and a third light source which are provided with different main wavelengths; the light source device further comprises collimation part, a reflection part, a convergency and refection part, a convergency part and a dichroic part, wherein the collimation part is positioned on emergent sides of the first and the third light sources and is used for aligning the received light sources; the reflection part is used for reflecting the aligned first light source to the convergency and refection part; the convergency and refection part is used for reflecting the first light source reflected by the reflection part and converging the aligned third source; the convergency part is used for converging the first and the third light sources; and the dichroic part is used for leading the second light source plus the first and the third light source from the convergency part to be incident into a light receiving part in the same direction. By adopting the light source device, the number of parts in the light source device can be effectively reduced, a light path is simplified, the energy utilization rate is increased, and the mounting and the maintenance are simple.
Description
Technical field
The present invention relates to Color Laser Projection Technology, relate in particular to a kind of light supply apparatus, light source production method and comprise the laser projection of this light supply apparatus.
Background technology
In recent years, laser projection is simple because of its principle, manufacture difficulty is low, rich color and visual impact are little etc., and advantage is widely used in multiple occasion, for example television projection, micro projection and some commercializations and entertainment systems etc.
As everyone knows, optical frame need be made up of the light wave of different predominant wavelengths at least, for example blueness, green and red light wave component.Based on present technology, generally can generate the light source of another kind of wavelength as exciting light with a kind of light source of wavelength, then again with the light source timesharing emission of other wavelength, on projection screen, demonstrate various pictures.The blue laser that is for example sent with the blue-light semiconductor laser instrument excites green light fluorescent powder to produce green glow as exciting light.
Fig. 1 is the structure and the principle schematic of light supply apparatus in the prior art.Referring to Fig. 1, the light source here comprises: first light source 101, secondary light source (not shown) and the 3rd light source 116 that wavelength has nothing in common with each other.This light supply apparatus comprises: collimating mirror 102, catoptron crowd 103, first collector lens 104, the first dichroic sheet 105, second collector lens 106, fluorescence wheel 107, the first deviation mirror 109a, the second deviation mirror 109b, the first catoptron 110a, the second catoptron 110b, the second dichroic sheet 111, the 3rd collector lens 112, optical wand 113, the 4th collector lens 114 and the 3rd deviation mirror 115.
Wherein the first dichroic sheet 105 allows first light source and the 3rd light source to see through, secondary light source is reflected, and the second dichroic sheet 111 allows first light source to see through, and secondary light source and the 3rd light source are reflected.
And, be coated with fluorescent powder in the subregion of fluorescence wheel 107, be under the situation of exciting light with first light source 101, the zone that is coated with fluorescent powder produces secondary light source.Because the fluorescence wheel is rotatable, first light source irradiation can produce the light of different wave length to the zones of different of fluorescence wheel 107.
In Fig. 1, the light beam with first wavelength of first light source, 101 outgoing is divergent shape and is incident to collimating mirror 102, and collimating mirror 102 becomes parallel beam with this beam collimation; The reflex of catoptron makes the optical axis of this parallel beam revolve and turn 90 degrees that the parallel beam behind 104 pairs of rotations of first collector lens optical axis is assembled, to 105 outgoing of the first dichroic sheet; After the light beam of first light source sees through the first dichroic sheet 105, after second collector lens 106 is assembled processing, arrive fluorescence wheel 107.
Fluorescence wheel 107 rotation under the driving of CD-ROM drive motor 117.For the wheel of the fluorescence in the rotation 107; If when first light source 101 was incident in phosphor area, excitated fluorescent powder was launched the secondary light source with second wavelength, this secondary light source is with the direction outgoing in contrast to the first light source incident direction; After arriving the first dichroic sheet 105; Its optical axis is rotated by 90 degrees under reflex, again through behind the first deviation mirror 109a, the first catoptron 110a, the second deviation mirror 109b, to 111 incidents of the second dichroic sheet; Because 111 pairs of secondary light sources of the second dichroic sheet reflect, then light beam directive the 3rd collector lens 112 of secondary light source focuses in the optical wand 113 at last.In brief, when first light source 101 was incident in the phosphor area of fluorescence wheel 107, what optical wand 113 was collected was the secondary light source with second wavelength.
If first light source 101 be incident in uncoated fluorescent powder on the fluorescence wheel 107 see through the zone time; First light source, 101 transmission fluorescence wheel 107; After the convergence of the 4th collector lens 114, the second catoptron 110b and the 3rd deviation mirror 115, reflecting and turn to; See through the second dichroic sheet 111 and transfer to the 3rd collector lens 112, finally focus in the optical wand 113.That is to say, first light source 101 be incident in fluorescence wheel 107 see through the zone time, what optical wand 113 was collected is first light source with first wavelength.
The 3rd light source 116 with three-wavelength is with the direction outgoing of the optical axis that is parallel to first light source; After the convergence through second collector lens 106; Arrive the first dichroic sheet 105; Because the first dichroic sheet 105 allows the 3rd light source to see through, then the 3rd light source through after the turning to, reflect and turn to of the first deviation mirror 109a, the first catoptron 110a, the second deviation mirror 109b, arrives the second dichroic sheet 111 again; The second dichroic sheet 111 revolves the optical axis of the 3rd light source 116 and turn 90 degrees, and through the 3rd collector lens 112, finally focuses in the optical wand 113.
Based on above structure and principle; Through controlling lighting the time of first light source and the 3rd light source, control the rotational speed of fluorescence wheel simultaneously, can realize that first light source, secondary light source, the 3rd light source timesharing get in the optical wand 113; Obtain the hot spot of different colours, and then constitute display frame.
Though above-mentioned conventional lighting sources device makes laser projection be achieved,, can find very intuitively that from Fig. 1 the optics in this light supply apparatus is too much, light path is long.Light beam is every all can to lose part energy through an optics, and the length of light path also can influence the energy loss of light beam.Therefore after each light source transmitted in light supply apparatus shown in Figure 1, energy had largely and reduces, and capacity usage ratio is lower.
And in the conventional lighting sources device, the more one-piece construction that causes of optics quantity is comparatively complicated, and volume also can be correspondingly bigger.Such light supply apparatus obviously can't adapt to more and more significantly miniaturization requirement.
In addition, in order to guarantee the normal operation of light supply apparatus, must guarantee the correctness of each optics self installation site and relative position, assembly difficulty is bigger; When wherein optics breaks down, can't find the problem place short time, maintenance difficulty is higher.
Therefore, there are a kind of needs to the light supply apparatus that can improve capacity usage ratio.
Summary of the invention
Embodiments of the invention provide a kind of light supply apparatus, light source production method and comprise the laser projection of this light supply apparatus, can improve capacity usage ratio.
In an embodiment of the present invention; Light supply apparatus comprises that this light source comprises first light source, secondary light source and the 3rd light source with different predominant wavelengths; It is characterized in that; This light supply apparatus further comprises: collimating components, reflection part, convergence reflex parts, convergence parts, dichroic parts and light-receiving member, and wherein reflection part, convergence reflex parts, convergence parts and dichroic parts are installed with one heart; Said collimating components is positioned at the emitting side of first light source and the 3rd light source, is used for the light source that the receives processing that collimates is obtained parallel beam; First source reflection and convergence to said convergence reflex parts after said reflection part is handled collimation; Said convergence reflex parts reflect processing to first light source of said reflection part reflection, and the 3rd light source after collimation is handled is assembled processing, and first light source and the 3rd light source are transmitted to said convergence parts; Said convergence parts are assembled processing to first light source and the 3rd light source, and to said dichroic parts transmission; Said dichroic parts with first light source and secondary light source and from the 3rd light source-guide of said convergence parts for being incident to said light-receiving member along same direction.
Wherein, the center line connecting direction of said reflection part, convergence reflex parts, convergence parts and dichroic parts is a first direction; Said first light source and the 3rd light source are central shaft outgoing to said collimating components with the first direction; First light source and the direction outgoing parallel or consistent of the 3rd light source edge after said collimating components is further handled collimation with said first direction; The optical axis of said light-receiving member drops on the second direction perpendicular to said first direction; The intersection point place that is centered close to said first direction and said second direction of said dichroic parts and between said convergence parts and said light-receiving member.
Wherein, said reflection part comprises catoptron, receive from first light source of said collimating components outgoing reflect and assembles handle after, transmit to said convergence reflex parts; Said convergence reflex parts comprise: first collector lens; Said first collector lens comprises spectro-film on the surface of said collimating components dorsad; Reflect and the 3rd light source of said collimating components outgoing is assembled with first light source said reflection part outgoing, and to said convergence parts transmission; Said convergence parts comprise the negative focal length lens, and first light source and the 3rd light source from said convergence reflex parts are assembled processing, obtain the light beam of reduced to receive threshold and the said first direction outgoing in edge.
Said catoptron is a concave mirror, non-spherical reflector, perhaps free-form surface mirror.
Said concave mirror comprises loop concave reflector.
Wherein, said negative focal length lens and said catoptron are formed first telescopic system, and said first collector lens and said negative focal length lens are formed second telescopic system;
The multiplying power of said first telescopic system is greater than the multiplying power of said second telescopic system.
Wherein, said secondary light source is along the second direction outgoing perpendicular to said first direction; Said dichroic parts comprise: the first dichroic sheet; Be used for said first light source and said the 3rd light source of the outgoing of said negative focal length lens are reflected; Make the optical axis of said first light source and said the 3rd light source rotate to said second direction; Transmit to said light-receiving member, and secondary light source is carried out transmission, transmit to said light-receiving member along said second direction.
In one embodiment; Said light supply apparatus further comprises: the 3rd collector lens; Be used for forming the parallel beam of reduced to receive threshold, and transmitting to the said first dichroic sheet along said second direction to assembling processing along the said secondary light source of said second direction transmission.
In one embodiment, said first light source is further along said second direction outgoing; Said light supply apparatus further comprises: fluorescence wheel, comprise phosphor area, and be used for by said first light source irradiation time, inspiring said secondary light source; Said dichroic parts comprise: the center is at said first direction and said second direction intersection point place and the X mirror between said negative focal length lens and said light-receiving member; Be used for and transmit to taking turns to said fluorescence from first light source-guide of said negative focal length lens along said first direction; To transmit to said light-receiving member along the said second direction in first light source-guide to edge of said second direction outgoing; To guide to along said second direction from the secondary light source of said fluorescence wheel and transmit, and will transmit to said light-receiving member from the said second direction in said the 3rd light source-guide to edge of said negative focal length lens to said light-receiving member.
Wherein, Said X mirror comprises: the second dichroic sheet; Be used for secondary light source being reflected processing, and said the 3rd light source being carried out transmission handle to carrying out the transmission processing from first light source of said negative focal length lens and first light source of the said second direction outgoing in edge; The 3rd dichroic sheet perpendicular to the said second dichroic sheet, is used for from first light source of said negative focal length lens with carry out transmission along first light source of second direction outgoing and handle, and the 3rd light source is reflected processing; The 4th dichroic sheet; Be positioned at same plane perpendicular to the second dichroic sheet and with the 3rd dichroic sheet; Be used for from first light source of said negative focal length lens with carry out transmission along first light source of second direction outgoing and handle; Secondary light source is carried out transmission handle, and the 3rd light source is reflected processing.
Wherein, be that first light source of central shaft outgoing to said collimating components and the position of the 3rd light source can exchange with the first direction.
In one embodiment; Said light supply apparatus further comprises: between said X mirror and said fluorescence wheel, five collector lens of optical axis on first direction; Be used for assembling processing from the secondary light source of said fluorescence wheel; Obtain the parallel beam of reduced to receive threshold, and transmit to said X mirror along first direction; Along the eye point of first light source of second direction outgoing and the 4th collector lens between the said X mirror; Be used for first light source along the second direction outgoing is assembled processing; Obtain the parallel beam of reduced to receive threshold, and transmit to said X mirror along second direction.
Wherein, said light-receiving member comprises: second collector lens and optical wand, second collector lens are used to treat the said light source that gets into said light-receiving member and assemble processing, and said optical wand is used to collect the light source of handling through the convergence of said second collector lens; Perhaps, said light-receiving member comprises fly's-eye lens, is used to receive and collect the said light source of waiting to get into said light-receiving member.
In the light source production method of the embodiment of the invention; Be used for comprising the light supply apparatus of light source, collimating components, reflection part, convergence reflex parts, convergence parts, dichroic parts and light-receiving member; Said light source comprises first light source, secondary light source and the 3rd light source with different predominant wavelengths; This method comprises: the light source that the collimation parts the receive processing that collimates obtains parallel beam; First source reflection to said convergence reflex parts after by said reflection part collimation being handled; By said convergence reflex parts first light source that said reflection part reflects is reflected processing, the 3rd light source after collimation is handled is assembled processing, and first light source and the 3rd light source are transmitted to said convergence parts; By said convergence parts first light source and the 3rd light source are assembled processing, and to said dichroic parts transmission; Is to be incident to said light-receiving member along same direction by said dichroic parts with said secondary light source and from first light source of said convergence parts and the 3rd light source-guide.
Laser projection of the present invention comprises: bare engine module, control module, electric power driving module and aforesaid light supply apparatus, and wherein, said bare engine module is made up of even optical illumination parts, display chip and projection lens; Said light supply apparatus is that laser projection provides available light source; Said bare engine module receives the light source that said light supply apparatus provides; Even optical illumination parts wherein are to the further even light of light source; Display chip generates picture under the real-time control of control module, the picture that is generated goes out picture to display through projection lens projects again; Said electric power driving module is that said light supply apparatus and display chip provide drive electricity.
In exemplary optical device of the present invention; Through collimating components, convergence reflex parts, convergence parts, reflection part and dichroic parts; Each light source to having different wave length collimates, assembles, reflection and transmission are handled, and can guide to being incident to light-receiving member along same direction.The number of components that is comprised in this light supply apparatus is less, and light path is shorter.Compare with the conventional lighting sources device, light supply apparatus of the present invention can reduce the energy loss of laser beam in transmission course effectively, thereby improves capacity usage ratio.
And; Can also utilize the X mirror in the light supply apparatus of the embodiment of the invention, directly each light source reflected or the transmission processing, make that the structure of light-source system is more compact; Size is littler, for the miniaturization of light supply apparatus and projector provides strong technical guarantee.
Correspondingly, under the high situation of light utilization efficiency, the laser projection among the present invention just can provide that rich color, stereovision are strong, picture display image clearly.
The present invention both applicable to the laser projection that generally uses, can also be applicable to the compound eye laser projection, and versatility is stronger.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Obviously, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 is the structure and the principle schematic of light supply apparatus in the prior art.
Fig. 2 is the illustrative principles synoptic diagram according to the light supply apparatus of the embodiment of the invention.
Fig. 3 is the structural representation according to the light supply apparatus of the first embodiment of the present invention.
Fig. 4 is the structural representation of light supply apparatus according to a second embodiment of the present invention.
Fig. 5 is the structural representation of the light supply apparatus of a third embodiment in accordance with the invention.
Fig. 6 is the schematic diagram according to the laser projection of the embodiment of the invention.
Embodiment
Below will combine accompanying drawing that the technical scheme of various embodiments of the present invention is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, the scope that all belongs to the present invention and protected.
Fig. 2 is the illustrative principles synoptic diagram according to the light supply apparatus of the embodiment of the invention.As shown in Figure 2; Light supply apparatus during the present invention implements comprises: the incident light source that comprises first light source 201 with different wave length, secondary light source, the 3rd light source 216; Collimating components 202, convergence reflex parts 217, convergence parts 218, reflection part 219, dichroic parts 220 and light-receiving member 221.
Above-mentioned light supply apparatus; Through collimating components, convergence reflex parts, convergence parts, reflection part and dichroic parts; Each light source to having different wave length collimates, assembles, reflection and transmission are handled, and can guide to being incident to light-receiving member along same direction.The number of components that is comprised in this light supply apparatus is less, and light path is shorter.Compare with the conventional lighting sources device, light supply apparatus of the present invention can reduce the energy loss of laser beam in transmission course effectively, thereby improves capacity usage ratio.And, in the light supply apparatus of the embodiment of the invention light path being changed the convergence reflex parts, convergence parts, reflection part and the dichroic parts that play a crucial role and only require concentric installation, matching requirements are very simple; When wherein any parts broke down, even all parts are investigated one by one, time and difficulty that finding out guilty culprit needs all had tangible reduction than prior art.
In the embodiment of the invention, the center line connecting direction of reflection part 219, convergence reflex parts 217, convergence parts 218 and dichroic parts 220 can be a first direction; First light source 201 and the 3rd light source 216 are central shaft outgoing to collimating components 202 with the first direction; First light source 201 and the direction outgoing parallel or consistent of the 3rd light source 216 edges after collimating components 202 is further handled collimation with first direction; The optical axis of light-receiving member 221 drops on the second direction perpendicular to first direction; The intersection point place that is centered close to first direction and second direction of dichroic parts 220 and assembling between parts 218 and the light-receiving member 221.
In one embodiment of the invention; Reflection part 219 can comprise catoptron; This catoptron can be a concave mirror, non-spherical reflector, perhaps free-form surface mirror; Be used to receive from first light source of collimating components outgoing reflect and assemble handle after, to 217 transmission of convergence reflex parts; The convergence reflex parts comprise: first collector lens; On the surface of collimating components 202 dorsad, comprise spectro-film; Reflect and the 3rd light source 216 of collimation parts 202 outgoing is assembled with first light source 201 reflection part 219 outgoing, and to assembling parts 218 transmission; Assemble parts 218 and comprise the negative focal length lens, first light source 201 and the 3rd light source 216 from convergence reflex parts 217 are assembled processing, obtain reduced to receive threshold and along the light beam of first direction outgoing.
Here negative focal length lens and catoptron are formed first telescopic system, and first collector lens and negative focal length lens are formed second telescopic system; The multiplying power of first telescopic system is greater than the multiplying power of second telescopic system.
Secondary light source in the present embodiment can be along the second direction outgoing; The dichroic parts 220 of this moment can comprise the first dichroic sheet; Be used for first light source 201 and the 3rd light source 216 of the outgoing of negative focal length lens are reflected, make the optical axis of win light source 201 and the 3rd light source 216 rotate to second direction, to light-receiving member 221 transmission; And secondary light source is carried out transmission, transmit to light-receiving member 221 along second direction.
In addition, secondary light source also can be produced as excitation light irradiation fluorescence wheel back by first light source.In this case, first light source is aforementioned as the light beam of exciting light except comprising, and also comprises along a branch of first light source of second direction transmission.
So; The dichroic parts comprise: the center is at first direction and second direction intersection point place and the X mirror between negative focal length lens and light-receiving member; First light source 201 that is used in the future conceited focal length lenses guides to along first direction to the transmission of fluorescence wheel; To guide to along first light source 201 of second direction outgoing along second direction to light-receiving member 221 transmission; The secondary light source of autofluorescence wheel guides to along second direction and transmits to light-receiving member 221 in the future, and the 3rd light source 216 of the focal length lenses of thinking highly of oneself in the future guides to along second direction to light-receiving member 221 transmission.
In one embodiment of the invention; The light source production method is used for comprising the light supply apparatus of light source, collimating components, reflection part, convergence reflex parts, convergence parts, dichroic parts and light-receiving member; Light source comprises first light source, secondary light source and the 3rd light source with different predominant wavelengths; This method comprises: the light source that the collimation parts the receive processing that collimates obtains parallel beam; First source reflection to convergence reflex parts after by reflection part collimation being handled; By the convergence reflex parts first light source that reflection part reflects is reflected processing, the 3rd light source after collimation is handled is assembled processing, and first light source and the 3rd light source are transmitted to assembling parts; By assembling parts first light source and the 3rd light source are assembled processing, and transmit to the dichroic parts; Is to be incident to light-receiving member along same direction by the dichroic parts with said secondary light source and from first light source of said convergence parts and the 3rd light source-guide.
In one embodiment of the invention, laser projection comprises: foregoing light supply apparatus, bare engine module, control module and electric power driving module.Wherein, bare engine module is made up of even optical illumination parts, display chip and projection lens.Light supply apparatus is that laser projection provides available light source.Bare engine module receives the light source that light supply apparatus provides, and even optical illumination parts wherein are to the further even light of light source, and display chip generates picture under the real-time control of control module, and the picture of generation goes out picture to display through projection lens projects again.Electric power driving module is that light supply apparatus and display chip provide drive electricity.
Below will describe the concrete scheme in the embodiment of the invention in detail.
First embodiment
Fig. 3 is the structural representation according to the light supply apparatus of the first embodiment of the present invention.
Referring to Fig. 3, in the present embodiment, light source is included as first light source 301, secondary light source 308 and the 3rd light source 316 that has different wave length separately.Except light source, light supply apparatus comprises: collimating lens system 302, first collector lens 317, negative focal length lens 318, catoptron 319, second collector lens 312 and optical wand 313.First collector lens 317, negative focal length lens 318, catoptron 319 and the first dichroic sheet 323 are all installed with one heart, and the optical axis of second collector lens 312 and optical wand 313 is vertical with the optical axis of each parts of concentric installation.The center line connecting direction of each parts that below will install with one heart is called first direction, and the direction vertical with first direction is called second direction.
The mode of incident light source emission laser beam is in the present embodiment: first light source 301 drops on annular beam outgoing to the collimating lens system 302 on the first direction extended line with the center; The 3rd light source 316 drops on circular light beam outgoing on the first direction extended line to collimating lens system 302 with the center, and secondary light source 308 drops on annular or circular light beam outgoing on the extended line of second direction to collimating lens system 302 with the center.
In the present embodiment; Collimating lens system 302 comprises at least one collimation lens; All be positioned at the emitting side of first light source 301, secondary light source 308 and the 3rd light source 316; To the processing that collimates of the light beam of first light source 301 that receives and the 3rd light source 316, obtain parallel beam, and the edge is parallel with first direction or the direction outgoing that overlaps.
Negative focal length lens 318 for example are concave mirrors, and these lens are assembled processing to the light beam that receives; Catoptron 319 for example is a concave mirror, non-spherical reflector, and perhaps free-form surface mirror is used for the light beam that receives is reflected and assembles to first direction.More particularly, when catoptron 319 is concave mirror, for example can adopt the form of loop concave reflector in the present embodiment.
In the present embodiment under the outgoing mode of each light source, first light source 301 at first arrives catoptron 319 through behind the collimating lens systems 302, be reflected and assemble after directive negative focal length lens 318 again.Then, after handling through the convergence of negative focal length lens 318, form reduced to receive threshold parallel beam, along first direction to 312 outgoing of second collector lens.The 3rd light source 316, is then assembled at negative focal length lens 318 places by 317 transmissions of first collector lens and convergence through after the calibration lens system 302 once more, obtains reduced to receive threshold parallel beam, along the first direction outgoing.
The dichroic parts for example can be the first dichroic sheets 323; It is centered close to the intersection point place of first direction and second direction and between negative focal length lens 318 and light-receiving member, this first dichroic sheet 323 is used for first light source 301 and 316 reflections of the 3rd light source to 318 outgoing of negative focal length lens; Make the optical axis of these two light sources rotate to second direction; Transmit to light-receiving member again, and allow secondary light source 308 transmissions, transmit to light-receiving member along second direction.
Present embodiment also comprises the 3rd collector lens 306, is used for the secondary light source 308 along second direction transmission is assembled processing, forms the parallel beam of reduced to receive threshold, and along second direction to 323 outgoing of the first dichroic sheet.
In the present embodiment, the delivery optics of each light source is:
First light source 301 is transformed into parallel beam after handling through the collimation of collimating lens system 302, and is incident to catoptron 319; Catoptron 319 reflects the light beam of first light source 301 to first collector lens 317; First collector lens 317 is towards the lip-deep spectro-film of catoptron 319, with the light beam of first light source 301 to 318 reflections of negative focal length lens; After the convergence processing through negative focal length lens 318, form the parallel beam of reduced to receive threshold; First light source 301 of 323 pairs of negative focal length lens 318 outgoing of the first dichroic sheet reflects, and the optical axis of this first light source 301 is revolved turn 90 degrees, and is promptly consistent with second direction, transfers in second collector lens 312 and the optical wand 313 again.
Secondary light source 308 after the convergence processing through the 3rd collector lens 306, forms the parallel beam of reduced to receive threshold, and continues transmission along second direction along the second direction outgoing; The first dichroic sheet 323 transfers to secondary light source 308 transmissions of the 3rd collector lens 306 outgoing in second collector lens 312 and the optical wand 313 along second direction.
The 3rd light source 316 is transformed into parallel beam through after the processing of collimating lens system 302, and is incident to first collector lens 317; The spectro-film of first collector lens 317 allows the beam convergence of the 3rd light source 316 to be transmitted through negative focal length lens 318; After the light beam of the 3rd light source 316 that 318 pairs on negative focal length lens receive is assembled processing, form the parallel beam of reduced to receive threshold; The 3rd light source 316 of 323 pairs of negative focal length lens 318 outgoing of the first dichroic sheet reflects, and the optical axis of the 3rd light source 316 is revolved turn 90 degrees, and is promptly consistent with second direction, transfers in second collector lens 312 and the optical wand 313 again.
By before can know; In the present embodiment, first light source, secondary light source and the 3rd light source with different wave length separate outgoing, need only the outgoing time according to each light source of actual demand adjustment; Can be implemented in different time and show different colors, to satisfy the requirement of laser projection.
In the transmission course of each light source; First collector lens 317 that present embodiment has spectro-film forms two cover telescopic systems with negative focal length lens 318, negative focal length lens 318 and catoptron 319; The light source-guide of different wave length is become different light paths, but finally all light sources all enter into light-receiving member with close diameter.The telescopic system that is formed by negative focal length lens 318 and catoptron 319 in the present embodiment is handled first light source; First collector lens 317 is handled the 3rd light source with the telescopic system that negative focal length lens 318 form; First light source is in the outer ring of the 3rd light source; The multiplying power of the telescopic system that therefore, is formed by negative focal length lens 318 and catoptron 319 is greater than the telescopic system that is formed by first collector lens 317 and negative focal length lens 318.
In the present embodiment, can transposition along first light source 301 and the 3rd light source 316 of first direction outgoing.
The optical axis of secondary light source and light-receiving member is vertical with the initial transmission direction of first light source and the 3rd light source in the present embodiment.In this case, light supply apparatus only can be accomplished the guiding to each light source through collimating lens system, first collector lens, negative focal length lens, catoptron and the first dichroic sheet.The number of components of present embodiment has been compared tangible minimizing with the scheme of prior art, and structure is comparatively simple, and light path also has shortening largely, therefore can improve capacity usage ratio effectively.
Second embodiment
Fig. 4 is the structural representation of light supply apparatus according to a second embodiment of the present invention.
Referring to Fig. 4, present embodiment has been introduced fluorescence wheel 422 on the basis of first embodiment, so as by first light source 401 as exciting light, when being radiated at the fluorescence wheel and being coated with fluorescent powder regional, produce the secondary light source (not shown).This fluorescence wheel 422 rotation under the driving of CD-ROM drive motor 411 is so that alternately receive first light source 401 in phosphor area or through the zone.
In order to make optical pickup apparatus obtain the light beam of 401 corresponding predominant wavelengths of first light source; Except the center first light source 401 outgoing on the first direction, as the exciting light of secondary light source; Also increase first light source 425 in the present embodiment along the second direction outgoing; This first light source 425 have with as the identical predominant wavelength of first light source 401 of exciting light, but illumination mode can be identical or different with first light source 401.For example, can be semiconductor laser (LD) light source as first light source 401 of exciting light, can be LD light source or light emitting diode (LED) light source along first light source 425 of second direction outgoing.
In addition, the dichroic parts in the present embodiment for example can comprise that the center is at first direction and second direction intersection point place and the X mirror between negative focal length lens 418 and light-receiving member.First light source 401 that this X mirror is used in the future conceited focal length lenses 418 guides to along first direction to 422 transmission of fluorescence wheel; To guide to along second direction along first light source 401 of second direction outgoing and transmit to light-receiving member; In the future the secondary light source of autofluorescence wheel 422 guides to along second direction and transmits to light-receiving member, and the 3rd light source 416 of the focal length lenses 418 of thinking highly of oneself in the future guides to along second direction and transmits to light-receiving member.
This X mirror comprises the second dichroic sheet 405, the 3rd dichroic sheet 420 and the 4th dichroic sheet 421.
The second dichroic sheet 405 is all vertical with the 4th dichroic sheet 421 with the 3rd dichroic sheet 420 that is positioned at same plane.405 pairs of the second dichroic sheets are from first light source 401 of negative focal length lens 418 and carry out transmission along first light source 425 of second direction outgoing and handle; Secondary light source is reflected processing; Make the optical axis of this secondary light source revolve and turn 90 degrees, and said the 3rd light source is carried out transmission handle.
The 3rd dichroic sheet 420 is perpendicular to the second dichroic sheet 405; To from first light source 401 of negative focal length lens 418 with carry out transmission along first light source 425 of second direction outgoing and handle; And the 3rd light source 416 reflected processing, its optical axis is carried out the rotation of 90 degree.
The 4th dichroic sheet 421 is positioned at same plane perpendicular to the second dichroic sheet 405 and with the 3rd dichroic sheet 420; Be used for from first light source 401 of negative focal length lens 418 with carry out transmission along first light source 425 of second direction outgoing and handle; Secondary light source is carried out transmission to be handled; And the 3rd light source 418 is reflected processing, make the optical axis of the 3rd light source revolve and turn 90 degrees.
Present embodiment has also increased by five collector lens 406 of one group of optical axis on first direction between X mirror and fluorescence wheel 422; Fluorescence being taken turns the secondary light source of 422 outgoing assembles; Obtain the parallel beam of reduced to receive threshold, and transmit to the X mirror along first direction.
In addition; Present embodiment has increased by four collector lens 426 of one group of optical axis on second direction at the X mirror and between the eye point of first light source 425 of second direction outgoing; First light source 425 is assembled processing; Obtain the parallel beam of reduced to receive threshold, transmit to the X mirror along second direction again.
The delivery optics of each light source is in the present embodiment:
First light source 401 is transformed into parallel beam after handling through the collimation of collimating lens system 402, and is incident to catoptron 419; Catoptron 419 reflects the light beam of first light source 401 to first collector lens 417; First collector lens 417 is towards the lip-deep spectro-film of catoptron 419, with the light beam of first light source 401 to 418 reflections of negative focal length lens; After the convergence processing through negative focal length lens 418, form the parallel beam of reduced to receive threshold; The second dichroic sheet 405, the 3rd dichroic sheet 420 and the 4th dichroic sheet 421 all carry out transmission to first light source 401 of negative focal length lens 418 outgoing; This first light source 401 is transferred to the 5th collector lens 406 along first direction; After overconvergence is handled, be radiated on the fluorescence wheel 422.
When first light source 401 is radiated at the phosphor area of fluorescence wheel 422; Inspire the direction and the first light source opposite secondary light source (not shown) of incident direction on the fluorescence wheel; Secondary light source transfers to the 5th collector lens 406 along first direction, after overconvergence is handled, transmits to the second dichroic sheet 405 and the 4th dichroic sheet 421; Secondary light source handles through the transmission of the 4th dichroic sheet 421 and the reflection of the second dichroic sheet 405 is handled, and the optical axis of secondary light source is rotated by 90 degrees, and transfers in second collector lens 412 and the optical wand 413 along second direction again.
When first light source 401 be radiated at fluorescence wheel 422 see through the zone time, directly transmission.
The 3rd light source 416 is transformed into parallel beam through after the processing of collimating lens system 402, and is incident to the first optically focused mirror lens 417; The spectro-film of the first optically focused mirror lens 417 allows the beam convergence of the 3rd light source 416 to be projected to negative focal length lens 418; After the light beam of the 3rd light source 416 that 418 pairs on negative focal length lens receive is assembled processing, form the parallel beam of reduced to receive threshold; Through the transmission of the second dichroic sheet 405 handle and the reflection processing of the 3rd dichroic sheet 420 and the 4th dichroic sheet 421 after; The optical axis of the 3rd light source 416 revolved turn 90 degrees; Promptly consistent with second direction, transfer to again in second collector lens 412 and the optical wand 413.
First light source 425 after the convergence processing through the 4th collector lens 426, obtains the parallel beam of reduced to receive threshold along the second direction outgoing; After this parallel beam is handled through the transmission of the second dichroic sheet 405 and the transmission of the 3rd dichroic sheet 420 and the 4th dichroic sheet 421 handles, consistent with second direction, transfer to again in second collector lens 412 and the optical wand 413.
In light-source system, inspire secondary light source in the present embodiment through the fluorescent powder of taking turns with the first light source irradiation fluorescence; And, also introduced along first light source of second direction transmission in order can in optical wand 413, to obtain and the light beam that with the first direction is the identical predominant wavelength of first light source of central shaft outgoing.In this case; Present embodiment has only increased parts such as X mirror, the 5th collector lens 406, the 4th collector lens 426 and fluorescence wheel 422 on the basis of first embodiment; The quantity of optics is still less, light path is still shorter, so capacity usage ratio can access effective raising than prior art.
In the present embodiment, can transposition along first light source 401 and the 3rd light source 416 of first direction outgoing.
In addition, introduced the X mirror in the present embodiment, can directly reflect each light source or transmission is handled, made that the structure of light-source system is more compact, size is littler, for the miniaturization of light supply apparatus and projector provides strong technical guarantee.
The 3rd embodiment
Fig. 5 is the structural representation of the light supply apparatus of a third embodiment in accordance with the invention.
Referring to Fig. 5, the light source type in the present embodiment and the light path of each light source and second embodiment are identical, and just the optical pickup apparatus here is a fly's-eye lens 524, so that the light supply apparatus of present embodiment is used for compound eye projector.
Light source in the present embodiment is first light source 501 that is used to excite secondary light source, the 3rd light source 516 and first light source 525 that has identical predominant wavelength with first light source.Light supply apparatus comprises: collimating lens system 502, first collector lens 517, negative focal length lens 518, catoptron 519, the X mirror that comprises the second dichroic sheet 505, the 3rd dichroic sheet 520 and the 4th dichroic sheet 521, fluorescence wheel 522, CD-ROM drive motor 511, the 5th collector lens 506, the 4th collector lens 526 and fly's-eye lens 524.
Because the transmission course of each light source is identical with second embodiment in the present embodiment, will repeat no more here.
Equally, with the same in embodiment 2, can exchange along first light source 501 of first direction outgoing and the position of the 3rd light source 516.
In addition, the light-receiving member that second collector lens in the light supply apparatus of aforementioned first embodiment and second embodiment and optical wand are formed also can be replaced by fly's-eye lens, is used to receive and collect the light source of waiting to get into light-receiving member.
Fig. 6 is the schematic diagram according to the laser projection of the embodiment of the invention.Referring to Fig. 6, laser projection comprises: foregoing light supply apparatus 600, bare engine module 601, electric power driving module 602 and control module 603.Wherein, bare engine module 601 is made up of even optical illumination parts, display chip and projection lens.Light supply apparatus 600 provides available light source for laser projection.Bare engine module 601 is used to receive the light source that said light supply apparatus provides; Even optical illumination parts wherein are to the further even light of light source; Display chip generates picture under the real-time control of control module 603, the picture of generation goes out picture to display through projection lens projects again.Said electric power driving module 602 provides drive electricity for light supply apparatus and display chip.
Through each embodiment provided by the invention; In the process with each light sources transmit to the light-receiving member of different predominant wavelengths; Only used the comparatively simple convergence reflex parts of optical principle, and the negligible amounts of these parts, effectively simplified light supply apparatus structure, shortened light path; Thereby improved capacity usage ratio, and then improved the image quality of laser projection.
The present invention has used the X mirror in the second and the 3rd embodiment; Repeatedly transmission and reflection function roll into one; Reduced the quantity of optics from another angle, and when further capacity usage ratio being provided, for the light supply apparatus miniaturization provides strong technical guarantee.
In addition, can satisfy the diversity requirement that light path changes through comparatively simple structure among each embodiment of the present invention, design ingeniously, but installation, modulation and maintenance difficulty are all lower.
Light supply apparatus among each embodiment of the present invention both applicable to the laser projection that generally uses, can also be applicable to the compound eye laser projection, had high generality.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also comprises these changes and modification interior.
Claims (10)
1. a light supply apparatus comprises light source, and this light source comprises first light source, secondary light source and the 3rd light source with different predominant wavelengths, it is characterized in that this light supply apparatus further comprises:
Collimating components, reflection part, convergence reflex parts, convergence parts, dichroic parts and light-receiving member, wherein reflection part, convergence reflex parts, convergence parts and dichroic parts are installed with one heart;
Said collimating components is positioned at the emitting side of first light source and the 3rd light source, is used for the light source that the receives processing that collimates is obtained parallel beam;
First source reflection and convergence to said convergence reflex parts after said reflection part is handled collimation;
Said convergence reflex parts reflect processing to first light source of said reflection part reflection, and the 3rd light source after collimation is handled is assembled processing, and first light source and the 3rd light source are transmitted to said convergence parts;
Said convergence parts are assembled processing to first light source and the 3rd light source, and to said dichroic parts transmission;
Said dichroic parts with first light source and secondary light source and from the 3rd light source-guide of said convergence parts for being incident to said light-receiving member along same direction.
2. light supply apparatus according to claim 1 is characterized in that, the center line connecting direction of said reflection part, convergence reflex parts, convergence parts and dichroic parts is a first direction;
First light source and the 3rd light source are central shaft outgoing to said collimating components with the first direction;
First light source and the direction outgoing parallel or consistent of the 3rd light source edge after said collimating components is further handled collimation with first direction;
The optical axis of said light-receiving member drops on the second direction perpendicular to first direction;
The intersection point place that is centered close to first direction and second direction of said dichroic parts and between said convergence parts and said light-receiving member.
3. light supply apparatus according to claim 2, said reflection part comprises catoptron, receive from first light source of said collimating components outgoing reflect and assembles handle after, transmit to said convergence reflex parts;
Said convergence reflex parts comprise: first collector lens; First collector lens comprises spectro-film on the surface of said collimating components dorsad; Reflect and the 3rd light source of said collimating components outgoing is assembled with first light source said reflection part outgoing, and to said convergence parts transmission;
Said convergence parts comprise the negative focal length lens, and first light source and the 3rd light source from said convergence reflex parts are assembled processing, obtain reduced to receive threshold and along the light beam of first direction outgoing;
Said catoptron is a concave mirror, non-spherical reflector, perhaps free-form surface mirror;
Said concave mirror comprises loop concave reflector.
4. light supply apparatus according to claim 3 is characterized in that, said negative focal length lens and said catoptron are formed first telescopic system, and said first collector lens and said negative focal length lens are formed second telescopic system;
The multiplying power of said first telescopic system is greater than the multiplying power of said second telescopic system.
5. light supply apparatus according to claim 3 is characterized in that, said secondary light source is along said second direction outgoing;
Said dichroic parts comprise: the first dichroic sheet; Be used for first light source and the 3rd light source of the outgoing of said negative focal length lens are reflected; Make the optical axis of win light source and the 3rd light source rotate to said second direction; Transmit to said light-receiving member, and secondary light source is carried out transmission, transmit to said light-receiving member along said second direction;
Said light supply apparatus further comprises: the 3rd collector lens is used for forming the parallel beam of reduced to receive threshold, and transmitting to the said first dichroic sheet along said second direction assembling processing along the secondary light source of said second direction transmission;
With the first direction is that first light source of central shaft outgoing to said collimating components and the position of the 3rd light source can exchange.
6. light supply apparatus according to claim 3 is characterized in that, first light source is further along the second direction outgoing;
Said light supply apparatus further comprises: the fluorescence wheel, comprise phosphor area, and be used for by first light source irradiation time, inspiring secondary light source;
Said dichroic parts comprise: the center is at first direction and second direction intersection point place and the X mirror between said negative focal length lens and said light-receiving member; Be used for and transmit to taking turns to said fluorescence from first light source-guide of said negative focal length lens along first direction; To extremely transmit to said light-receiving member along first light source-guide of second direction outgoing along second direction; To guide to along second direction from the secondary light source of said fluorescence wheel and transmit, and will extremely transmit to said light-receiving member from the 3rd light source-guide of said negative focal length lens along second direction to said light-receiving member;
Said X mirror comprises: the second dichroic sheet is used for secondary light source being reflected processing, and the 3rd light source being carried out transmission handle from first light source of said negative focal length lens with carry out transmission along first light source of second direction outgoing and handle;
The 3rd dichroic sheet perpendicular to the second dichroic sheet, is used for from first light source of said negative focal length lens with carry out transmission along first light source of second direction outgoing and handle, and the 3rd light source is reflected processing;
The 4th dichroic sheet; Be positioned at same plane perpendicular to the second dichroic sheet and with the 3rd dichroic sheet; Be used for from first light source of said negative focal length lens with carry out transmission along first light source of second direction outgoing and handle; Secondary light source is carried out transmission handle, and the 3rd light source is reflected processing.
7. light supply apparatus according to claim 6 is characterized in that, said light supply apparatus further comprises:
Between said X mirror and said fluorescence wheel, five collector lens of optical axis on first direction; Be used for assembling processing from the secondary light source of said fluorescence wheel; Obtain the parallel beam of reduced to receive threshold, and transmit to said X mirror along first direction;
Along the eye point of first light source of second direction outgoing and the 4th collector lens between the said X mirror; Be used for first light source along the second direction outgoing is assembled processing; Obtain the parallel beam of reduced to receive threshold, and transmit to said X mirror along second direction;
With the first direction is that first light source of central shaft outgoing to said collimating components and the position of the 3rd light source can exchange.
8. light supply apparatus according to claim 1 is characterized in that, said light-receiving member comprises:
Second collector lens and optical wand, second collector lens are used to treat the said light source that gets into said light-receiving member and assemble processing, and said optical wand is used to collect the light source of handling through the convergence of second collector lens;
Said light-receiving member comprises: fly's-eye lens is used to receive and collect the said light source of waiting to get into said light-receiving member.
9. light source production method; It is characterized in that; Be used for comprising the light supply apparatus of light source, collimating components, reflection part, convergence reflex parts, convergence parts, dichroic parts and light-receiving member; Said light source comprises first light source, secondary light source and the 3rd light source with different predominant wavelengths, and this method comprises:
The light source that the collimation parts the receive processing that collimates obtains parallel beam;
First source reflection to said convergence reflex parts after by said reflection part collimation being handled;
By said convergence reflex parts first light source that said reflection part reflects is reflected processing, the 3rd light source after collimation is handled is assembled processing, and first light source and the 3rd light source are transmitted to said convergence parts;
By said convergence parts first light source and the 3rd light source are assembled processing, and to said dichroic parts transmission;
Is to be incident to said light-receiving member along same direction by said dichroic parts with said secondary light source and from first light source of said convergence parts and the 3rd light source-guide.
10. a laser projection is characterized in that, this laser projection comprises: bare engine module, control module, electric power driving module and according to the described light supply apparatus of one of claim 1 to 8, wherein,
Said bare engine module is made up of even optical illumination parts, display chip and projection lens;
Said light supply apparatus is that laser projection provides available light source;
Said bare engine module receives the light source that said light supply apparatus provides; Even optical illumination parts wherein are to the further even light of light source; Display chip generates picture under the real-time control of control module, the picture that is generated goes out picture to display through projection lens projects again;
Said electric power driving module is that said light supply apparatus and display chip provide drive electricity.
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