CN102540679B - 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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- CN102540679B CN102540679B CN201210040289.0A CN201210040289A CN102540679B CN 102540679 B CN102540679 B CN 102540679B CN 201210040289 A CN201210040289 A CN 201210040289A CN 102540679 B CN102540679 B CN 102540679B
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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, the laser projection that relates in particular to a kind of light supply apparatus, light source generation method and comprise this light supply apparatus.
Background technology
In recent years, laser projection because its principle is simple, manufacture difficulty is low, rich color and visual impact is little etc. that advantage is widely used in multiple occasion, such as television projection, micro projection and some commercializations and entertainment systems etc.
As everyone knows, optical frame at least need to be comprised of the light wave of different predominant wavelengths, for example blueness, green and red light wave component.Technology based on current, a kind of light source of wavelength of generally can usining generates the light source of another kind of wavelength as exciting light, then again with the light source timesharing transmitting of other wavelength, on projection screen, demonstrate various pictures.The blue laser that the blue-light semiconductor laser instrument of for example usining is sent, as exciting light, excites green light fluorescent powder to produce green glow.
Fig. 1 is structure and the principle schematic of light supply apparatus in prior art.Referring to Fig. 1, the light source here comprises: the first light source 101, secondary light source (not shown) and the 3rd light source 116 that wavelength is different.This light supply apparatus comprises: collimating mirror 102, catoptron group 103, the first collector lens 104, the first dichroic sheet 105, the second collector lens 106, fluorescent 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 the first light source and the 3rd light source to see through, secondary light source is reflected, and the second dichroic sheet 111 allows the first light source to see through, and secondary light source and the 3rd light source are reflected.
And, in the subregion of fluorescent wheel 107, be coated with fluorescent powder, take the first light source 101 as exciting light in the situation that, the region that is coated with fluorescent powder produces secondary light source.Because fluorescent wheel is rotatable, the first light source is irradiated to the zones of different of fluorescent wheel 107, can produce the light of different wave length.
In Fig. 1, the light beam with the first wavelength of the first light source 101 outgoing is divergent shape and is incident to collimating mirror 102, and collimating mirror 102 becomes parallel beam by this beam collimation; The reflex of catoptron makes the optical axis 90-degree rotation of this parallel beam, and the parallel beam after the first 104 pairs of collector lenses rotation optical axis is assembled, to the first dichroic sheet 105 outgoing; The light beam of the first light source sees through after the first dichroic sheet 105, through the second collector lens 106, assembles after processing, arrives fluorescent wheel 107.
Fluorescent wheel 107 rotates under the driving of CD-ROM drive motor 117.For the fluorescent wheel 107 in rotation, when if the first light source 101 is incident in phosphor area, excitated fluorescent powder is launched the secondary light source with second wave length, this secondary light source is with the direction outgoing in contrast to the first light source incident direction, arrive after the first dichroic sheet 105, its optical axis is rotated by 90 degrees under reflex, then after the first deviation mirror 109a, the first catoptron 110a, the second deviation mirror 109b, to the second dichroic sheet 111 incidents; Because 111 pairs of secondary light sources of the second dichroic sheet reflect, light beam directive the 3rd collector lens 112 of secondary light source, finally focuses in optical wand 113.In brief, when the first light source 101 is incident in the phosphor area of fluorescent wheel 107, what optical wand 113 was collected is the secondary light source with second wave length.
If the first light source 101 be incident in uncoated fluorescent powder on fluorescent wheel 107 see through region time, the first light source 101 transmission fluorescent wheels 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 optical wand 113.That is to say, the first light source 101 be incident in fluorescent wheel 107 see through region time, what optical wand 113 was collected is first light source with the first wavelength.
There is the 3rd light source 116 of three-wavelength to be parallel to the direction outgoing of the optical axis of the first light source, after the convergence of the second collector lens 106, arrive the first dichroic sheet 105, because the first dichroic sheet 105 allows the 3rd light source to see through, the 3rd light source, again 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; The second dichroic sheet 111, by the optical axis 90-degree rotation of the 3rd light source 116, through the 3rd collector lens 112, finally focuses in optical wand 113.
Structure based on above and principle, by controlling lighting the time of the first light source and the 3rd light source, control the rotational speed of fluorescent wheel simultaneously, can realize the first light source, secondary light source, the 3rd light source timesharing and enter in optical wand 113, obtain the hot spot of different colours, and then form display frame.
Although above-mentioned existing light supply apparatus is achieved laser projection,, from Fig. 1, can find very intuitively, optics in this light supply apparatus is too much, light path is long.Light beam is every all can lose part energy through an optics, and the length of light path also can affect the energy loss of light beam.Therefore after each light source transmits in the light supply apparatus shown in Fig. 1, energy has largely and reduces, and capacity usage ratio is lower.
And in existing light supply apparatus, the more one-piece construction that causes of optics quantity is comparatively complicated, and volume also can be correspondingly larger.Such light supply apparatus obviously cannot 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 larger; When optics wherein breaks down, cannot find problem place the short time, maintenance difficulty is higher.
Therefore, exist a kind of to improving the needs of the light supply apparatus of capacity usage ratio.
Summary of the invention
The laser projection that embodiments of the invention provide a kind of light supply apparatus, light source generation method and comprise 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 the 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; Described collimating components is positioned at the emitting side of the first light source and the 3rd light source, for processing that the light source receiving is collimated, obtains parallel beam; The first light source reflection after described reflection part is processed collimation and convergence are to described convergence reflex parts; Described convergence reflex parts reflect processing to the first light source of described reflection part reflection, and the 3rd light source after collimation is processed is assembled processing, and the first light source and the 3rd light source are transmitted to described convergence parts; Described convergence parts are assembled processing to the first light source and the 3rd light source, and to described dichroic parts transmission; Described dichroic parts by the first light source and secondary light source and from the 3rd light source-guide of described convergence parts for being incident in the same direction described light-receiving member.
Wherein, the center line connecting direction of described reflection part, convergence reflex parts, convergence parts and dichroic parts is first direction; Described the first light source and the 3rd light source centered by first direction axle outgoing to described collimating components; The first light source and the 3rd light source edge direction outgoing parallel or consistent with described first direction after described collimating components is further processed collimation; The optical axis of described light-receiving member drops in the second direction perpendicular to described first direction; The intersection point place that is centered close to described first direction and described second direction of described dichroic parts and between described convergence parts and described light-receiving member.
Wherein, described reflection part comprises catoptron, receives from the first light source of described collimating components outgoing and reflects and assemble processing, to described convergence reflex parts transmission; Described convergence reflex parts comprise: the first collector lens, described the first collector lens comprises spectro-film on the surface of described collimating components dorsad, with the first light source to described reflection part outgoing, reflect and the 3rd light source of described collimating components outgoing is assembled, and to described convergence parts transmission; Described convergence parts comprise negative focal length lens, and the first light source from described convergence reflex parts and the 3rd light source are assembled to processing, obtain reduced to receive threshold and along the light beam of described first direction outgoing.
Described catoptron is concave mirror, non-spherical reflector, or free-form surface mirror.
Described concave mirror comprises loop concave reflector.
Wherein, described negative focal length lens and described catoptron form the first telescopic system, and described the first collector lens and described negative focal length lens form the second telescopic system;
The multiplying power of described the first telescopic system is greater than the multiplying power of described the second telescopic system.
Wherein, described secondary light source is along the second direction outgoing perpendicular to described first direction; Described dichroic parts comprise: the first dichroic sheet, for described first light source of described negative focal length lens outgoing and described the 3rd light source are reflected, make the optical axis rotation of described the first light source and described the 3rd light source to described second direction, to described light-receiving member transmission, and secondary light source is carried out to transmission, along described second direction, to described light-receiving member, transmit.
In one embodiment, described light supply apparatus further comprises: the 3rd collector lens, for to assembling processing along the described secondary light source of described second direction transmission, form reduced to the parallel beam of receive threshold, and along described second direction to described the first dichroic sheet transmission.
In one embodiment, described the first light source is further along described second direction outgoing, described light supply apparatus further comprises: fluorescent wheel, comprise phosphor area, and for when being irradiated by described the first light source, inspire described secondary light source, described dichroic parts comprise: center is at described first direction and described second direction intersection point place, and the X mirror between described negative focal length lens and described light-receiving member, for the first light source-guide from described negative focal length lens is extremely transmitted to described fluorescent wheel along described first direction, the first light source-guide along described second direction outgoing is extremely transmitted to described light-receiving member along described second direction, secondary light source from described fluorescent wheel is guided to along described second direction and transmitted to described light-receiving member, and described the 3rd light source-guide from described negative focal length lens is extremely transmitted to described light-receiving member along described second direction.
Wherein, described X mirror comprises: the second dichroic sheet, for carrying out transmission processing to the first light source from described negative focal length lens with along the first light source of described second direction outgoing, secondary light source is reflected to processing, and described the 3rd light source is carried out to transmission processing; The 3rd dichroic sheet, perpendicular to described the second dichroic sheet, carries out transmission processing for the first light source to from described negative focal length lens with along the first light source of second direction outgoing, and the 3rd light source is reflected to processing; The 4th dichroic sheet, perpendicular to the second dichroic sheet and with the 3rd dichroic sheet, be positioned at same plane, for carrying out transmission processing to the first light source from described negative focal length lens with along the first light source of second direction outgoing, secondary light source is carried out to transmission processing, and the 3rd light source is reflected to processing.
Wherein, centered by first direction, axle outgoing to the first light source of described collimating components and the position of the 3rd light source can exchange.
In one embodiment, described light supply apparatus further comprises: between described X mirror and described fluorescent wheel, optical axis the 5th collector lens in a first direction, be used for assembling processing from the secondary light source of described fluorescent wheel, obtain reduced to the parallel beam of receive threshold, and transmit to described X mirror along first direction; At the eye point of the first light source along second direction outgoing and the 4th collector lens between described X mirror, for the first light source along second direction outgoing is assembled to processing, obtain reduced to the parallel beam of receive threshold, and transmit to described X mirror along second direction.
Wherein, described light-receiving member comprises: the second collector lens and optical wand, and the second collector lens enters the described light source of described light-receiving member and assembles processing for treating, and described optical wand is for collecting the light source of processing through the convergence of described the second collector lens; Or described light-receiving member comprises fly's-eye lens, for receiving and collect the described light source of waiting to enter described light-receiving member.
In the light source generation method of the embodiment of the present invention, for comprising the light supply apparatus of light source, collimating components, reflection part, convergence reflex parts, convergence parts, dichroic parts and light-receiving member, described light source comprises the first light source, secondary light source and the 3rd light source with different predominant wavelengths, the method comprises: the light source that collimation parts the receive processing that collimates, obtains parallel beam; The first light source after collimation being processed by described reflection part reflexes to described convergence reflex parts; By described convergence reflex parts, the first light source of described reflection part reflection is reflected to processing, the 3rd light source after collimation is processed is assembled processing, and the first light source and the 3rd light source are transmitted to described convergence parts; By described convergence parts, the first light source and the 3rd light source are assembled to processing, and to described dichroic parts transmission; By described dichroic parts by described secondary light source and from the first light source of described convergence parts and the 3rd light source-guide for being incident in the same direction described light-receiving member.
Laser projection of the present invention, comprising: bare engine module, control module, electric power driving module and aforesaid light supply apparatus, and wherein, described bare engine module is comprised of even optical illumination parts, display chip and projection lens; Described light supply apparatus provides available light source for laser projection; Described bare engine module receives the light source that described light supply apparatus provides, even optical illumination parts are wherein to the further even light of light source, display chip generates picture under the real-time control of control module, and the picture generating goes out picture to display through projection lens projects again; Described electric power driving module provides driving electric energy for described light supply apparatus and display chip.
In exemplary optical device of the present invention, by collimating components, convergence reflex parts, convergence parts, reflection part and dichroic parts, to thering is each light source of different wave length, collimate, assemble, reflection and transmission process, bootable for being incident in the same direction light-receiving member.The number of components comprising in this light supply apparatus is less, and light path is shorter.Compare with existing light supply apparatus, light supply apparatus of the present invention can reduce the energy loss of laser beam in transmitting procedure effectively, thereby improves capacity usage ratio.
And, in the light supply apparatus of the embodiment of the present invention, can also utilize X mirror, directly each light source be reflected or transmission processing, make the structure of light-source system more compact, size is less, for the miniaturization of light supply apparatus and projector provides strong technical guarantee.
Correspondingly, in the situation that light utilization efficiency is high, the laser projection in the present invention just can provide that rich color, stereovision are strong, picture shows image clearly.
The present invention both, applicable to the laser projection generally using, can also be applicable to compound eye laser projection, and versatility is stronger.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described.Apparently, the accompanying drawing in below describing is only some embodiments of the present invention, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 is structure and the principle schematic of light supply apparatus in prior art.
Fig. 2 is the illustrative principles schematic diagram according to the light supply apparatus of the embodiment of the present invention.
Fig. 3 is according to the structural representation of 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 according to the schematic diagram of the laser projection of the embodiment of the present invention.
Embodiment
Below with reference to accompanying drawing, the technical scheme of various embodiments of the present invention is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the present invention protects.
Fig. 2 is the illustrative principles schematic diagram according to the light supply apparatus of the embodiment of the present invention.As shown in Figure 2, light supply apparatus in the invention process comprises: comprise there is the first light source 201, the secondary light source of different wave length, the incident light source of 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.
Collimating components 202 is positioned at the emitting side of the first light source 201 and the 3rd light source 216, for processing that the light source receiving is collimated, obtains parallel beam; The first light source 201 after reflection part 219 is processed collimation reflexes to convergence reflex parts 217; The first light source 201 of 217 pairs of reflection parts of convergence reflex parts, 219 reflections reflects processing, and the 3rd light source 216 after collimation is processed is assembled processing, and the first light source 201 and the 3rd light source 216 are transmitted to assembling parts 218; Assemble 218 pairs of the first light sources 201 of parts and the 3rd light source 216 and assemble processing, and to 220 transmission of dichroic parts; Dichroic parts 220 guide as being incident in the same direction light-receiving member 221 by secondary light source and from the first light source 201 and the 3rd light source 216 of assembling parts 218.
Above-mentioned light supply apparatus, by collimating components, convergence reflex parts, convergence parts, reflection part and dichroic parts, to thering is each light source of different wave length, collimate, assemble, reflection and transmission process, bootable for being incident in the same direction light-receiving member.The number of components comprising in this light supply apparatus is less, and light path is shorter.Compare with existing light supply apparatus, light supply apparatus of the present invention can reduce the energy loss of laser beam in transmitting procedure effectively, thereby improves capacity usage ratio.And, in the light supply apparatus of the embodiment of the present invention, light path being changed to 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 any parts wherein break down, even all parts are investigated one by one, time and difficulty that finding out guilty culprit needs all have obvious reduction compared with prior art.
According in the embodiment of the present invention, the center line connecting direction of reflection part 219, convergence reflex parts 217, convergence parts 218 and dichroic parts 220 can be first direction; The first light source 201 and the 3rd light source 216 centered by first direction axle outgoing to collimating components 202; The first light source 201 after collimating components 202 is further processed collimation and the 3rd light source 216 edge direction outgoing parallel or consistent with first direction; The optical axis of light-receiving member 221 drops in 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 light-receiving member 221.
In one embodiment of the invention, reflection part 219 can comprise catoptron, this catoptron can be concave mirror, non-spherical reflector, or free-form surface mirror, for receiving from the first light source of collimating components outgoing, reflect and assemble processing, to 217 transmission of convergence reflex parts; Convergence reflex parts comprise: the first collector lens, on the surface of collimating components 202 dorsad, comprise spectro-film, so that the first light source 201 of reflection part 219 outgoing is reflected, the 3rd light source 216 of collimation parts 202 outgoing is assembled, and to assembling parts 218 transmission; Assemble parts 218 and comprise negative focal length lens, the first light source 201 from convergence reflex parts 217 and the 3rd light source 216 are assembled to processing, obtain reduced to receive threshold and along the light beam of first direction outgoing.
Here negative focal length lens and catoptron form the first telescopic system, and the first collector lens and negative focal length lens form the second telescopic system; The multiplying power of the first telescopic system is greater than the multiplying power of the second telescopic system.
Secondary light source in the present embodiment can be along second direction outgoing, dichroic parts 220 now can comprise the first dichroic sheet, for the first light source 201 of negative focal length lens outgoing and the 3rd light source 216 are reflected, the optical axis of the first light source 201 and the 3rd light source 216 is rotated to second direction, to light-receiving member 221 transmission, and secondary light source is carried out to transmission, along second direction to light-receiving member 221 transmission.
In addition, secondary light source produces after also can irradiating fluorescent wheel as exciting light by the first light source.In this case, the 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, dichroic parts comprise: center is at first direction and second direction intersection point place, and the X mirror between negative focal length lens and light-receiving member, the first light source 201 that is used in the future conceited focal length lenses guides to along first direction and transmits to fluorescent wheel, the first light source 201 along second direction outgoing is guided to along second direction to light-receiving member 221 transmission, the secondary light source of autofluorescence wheel guides to along second direction to light-receiving member 221 transmission 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, light source generation method is 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 the first light source, secondary light source and the 3rd light source with different predominant wavelengths, the method comprises: the light source that collimation parts the receive processing that collimates, obtains parallel beam; The first light source after collimation being processed by reflection part reflexes to convergence reflex parts; By convergence reflex parts, the first light source of reflection part reflection is reflected to processing, the 3rd light source after collimation is processed is assembled processing, and the first light source and the 3rd light source are transmitted to assembling parts; By assembling parts, the first light source and the 3rd light source are assembled to processing, and transmit to dichroic parts; By dichroic parts by described secondary light source and from the first light source of described convergence parts and the 3rd light source-guide for being incident in the same direction light-receiving member.
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 comprised of even optical illumination parts, display chip and projection lens.Light supply apparatus provides available light source for laser projection.Bare engine module receives the light source that light supply apparatus provides, and even optical illumination parts are wherein 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 provides driving electric energy for light supply apparatus and display chip.
Below by the concrete scheme of describing in detail in the embodiment of the present invention.
The first embodiment
Fig. 3 is according to the structural representation of 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 the first light source 301, secondary light source 308 and the 3rd light source 316 separately with different wave length.Except light source, light supply apparatus comprises: collimating lens system 302, the first collector lens 317, negative focal length lens 318, catoptron 319, the second collector lens 312 and optical wand 313.The 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 the second collector lens 312 and optical wand 313 is vertical with the optical axis of all parts of concentric installation.Below the center line connecting direction of all parts of installing is with one heart called to first direction, the direction vertical with first direction is called to second direction.
In the present embodiment, the mode of incident light source Emission Lasers light beam is: annular beam outgoing on first direction extended line is dropped on to collimating lens system 302 in the first light source 301Yi center, circular light beam outgoing on first direction extended line is dropped on to collimating lens system 302 in the 3rd light source 316Yi center, and secondary light source 308Yi drops at center annular on the extended line of second direction or circular light beam outgoing to collimating lens system 302.
In the present embodiment, collimating lens system 302 comprises at least one collimation lens, all be positioned at the emitting side of the first light source 301, secondary light source 308 and the 3rd light source 316, to the processing that collimates of the light beam of the first light source 301 receiving and the 3rd light source 316, obtain parallel beam, and along direction outgoing parallel with first direction or that overlap.
The first collector lens 317 is the lens with positive focal length in the side towards collimating lens system 302, on the surface of collimating lens system 302 (A face), there is spectro-film dorsad, this spectro-film reflects the first light source 301, and the 3rd light source 316 is carried out to transmission.When the first light source 301 incides on the first collector lens 317, due to the effect of spectro-film, can only be reflected; When the 3rd light source 316 incides on this first collector lens 317, because first touching a side of the lens with positive focal length, be converged, while touching spectro-film again, be transmitted away, when the 3rd light source 316 is through the first collector lens 317, be transformed to light beam that diameter dwindles to some extent and along first direction outgoing.
Negative focal length lens 318 are for example concave mirrors, and these lens are assembled processing to the light beam receiving; Catoptron 319 is for example concave mirror, and non-spherical reflector, or free-form surface mirror, for reflecting the light beam receiving and assembling to first direction.More specifically, in the present embodiment, when catoptron 319 is concave mirror, for example, can adopt the form of loop concave reflector.
Under the outgoing mode of each light source, the first light source 301, after collimating lens system 302, first arrives catoptron 319 in the present embodiment, directive negative focal length lens 318 again after being reflected and assembling.Then, after the convergence of negative focal length lens 318 is processed, form reduced to receive threshold parallel beam, along first direction to the second collector lens 312 outgoing.The 3rd light source 316, after calibration lens system 302, by the first collector lens 317 transmissions convergence, is then assembled at negative focal length lens 318 places again, obtains reduced to receive threshold parallel beam, along first direction outgoing.
Dichroic parts can be for example 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 the first dichroic sheet 323, for the first light source 301 of negative focal length lens 318 outgoing and the 3rd light source 316 are reflected, the optical axis of these two light sources is rotated to second direction, to light-receiving member, transmit again, and allow secondary light source 308 transmissions, along second direction, to light-receiving member, transmit.
The present embodiment also comprises the 3rd collector lens 306, for to assembling processing along the secondary light source 308 of second direction transmission, forms reduced to the parallel beam of receive threshold, and along second direction to the first dichroic sheet 323 outgoing.
In the present embodiment, the transmission light path of each light source is:
The first light source 301 is transformed into parallel beam after the collimation of collimating lens system 302 is processed, and is incident to catoptron 319; Catoptron 319 reflects the light beam of the first light source 301 to the first collector lens 317; The first collector lens 317, towards the lip-deep spectro-film of catoptron 319, reflects the light beam of the first light source 301 to negative focal length lens 318; After the convergence of negative focal length lens 318 is processed, form reduced to the parallel beam of receive threshold; The first light source 301 of the first 323 pairs of dichroic sheets negative focal length lens, 318 outgoing reflects, by the optical axis 90-degree rotation of this first light source 301, consistent with second direction, then transfers in the second collector lens 312 and optical wand 313.
Secondary light source 308, along second direction outgoing, after the convergence of the 3rd collector lens 306 is processed, forms reduced to the parallel beam of receive threshold, and continues transmission along second direction; The first dichroic sheet 323, by secondary light source 308 transmissions of the 3rd collector lens 306 outgoing, transfers in the second collector lens 312 and optical wand 313 along second direction.
The 3rd light source 316 is transformed into parallel beam after the processing of collimating lens system 302, and is incident to the first collector lens 317; The spectro-film of the first collector lens 317 allows the light beam of the 3rd light source 316 to assemble and is transmitted through negative focal length lens 318; After the light beam of the 3rd light source 316 that 318 pairs, negative focal length lens receive is assembled and processed, form reduced to the parallel beam of receive threshold; The 3rd light source 316 of the first 323 pairs of dichroic sheets negative focal length lens, 318 outgoing reflects, by the optical axis 90-degree rotation of the 3rd light source 316, consistent with second direction, then transfers in the second collector lens 312 and optical wand 313.
From front, in the present embodiment, there is the first light source, secondary light source and the separated outgoing of the 3rd light source of different wave length, as long as adjust the outgoing time of each light source according to actual demand, can realize at different time and show different colors, to meet the requirement of laser projection.
In the transmitting procedure of each light source, the first collector lens 317 and negative focal length lens 318, negative focal length lens 318 and catoptron 319 that the present embodiment has spectro-film form two cover telescopic systems, the light source-guide of different wave length is become to different light paths, but final all light sources all enter into light-receiving member with close diameter.The telescopic system being formed by negative focal length lens 318 and catoptron 319 in the present embodiment is processed the first light source, the telescopic system that the first collector lens 317 and negative focal length lens 318 form is processed the 3rd light source, the first light source is in the outer ring of the 3rd light source, the multiplying power of the telescopic system therefore, being formed by negative focal length lens 318 and catoptron 319 is greater than the telescopic system being formed by the first collector lens 317 and negative focal length lens 318.
In the present embodiment, can transposition along the first light source 301 and the 3rd light source 316 of first direction outgoing.
In the present embodiment, the optical axis of secondary light source and light-receiving member is vertical with the initial transmission direction of the 3rd light source with the first light source.In this case, light supply apparatus only can complete the guiding to each light source by collimating lens system, the first collector lens, negative focal length lens, catoptron and the first dichroic sheet.The number of components of the present embodiment has been compared obvious minimizing with the scheme of prior art, and structure is comparatively simple, and light path also has shortening largely, therefore can effectively improve capacity usage ratio.
The 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, the present embodiment is at the upper fluorescent wheel 422 of having introduced in the basis of the first embodiment, so as by the first light source 401 as exciting light, when being radiated at fluorescent wheel and being coated with the region of fluorescent powder, produce secondary light source (not shown).This fluorescent wheel 422 rotates under the driving of CD-ROM drive motor 411, to alternately receive the first light source 401 in phosphor area or through region.
In order to make optical pickup apparatus obtain the light beam of 401 corresponding predominant wavelengths of the first light source, except center is in a first direction the first light source 401 outgoing, as the exciting light of secondary light source, in the present embodiment, also increase the first light source 425 along second direction outgoing, this first light source 425 have with as the identical predominant wavelength of the first light source 401 of exciting light, but illumination mode can be identical or different with the first light source 401.For example, as the first light source 401 of exciting light, can be semiconductor laser (LD) light source, along the first light source 425 of second direction outgoing, can be LD light source or light emitting diode (LED) light source.
In addition, the dichroic parts in the present embodiment for example can comprise that center is at first direction and second direction intersection point place the X mirror between negative focal length lens 418 and light-receiving member.This X mirror guides to along first direction to fluorescent wheel 422 transmission for the first light source 401 of the focal length lenses 418 of thinking highly of oneself in the future, the first light source 401 along second direction outgoing is guided to along second direction and transmitted 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.The second 405 pairs of dichroic sheets carry out transmission processing from the first light source 401 of negative focal length lens 418 with along the first light source 425 of second direction outgoing, secondary light source is reflected to processing, make the optical axis 90-degree rotation of this secondary light source, and described the 3rd light source is carried out to transmission processing.
The 3rd dichroic sheet 420 is perpendicular to the second dichroic sheet 405, to the first light source 401 from negative focal length lens 418 with along the first light source 425 of second direction outgoing, carry out transmission processing, and the 3rd light source 416 is reflected to processing, its optical axis is carried out to 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, for carrying out transmission processing to the first light source 401 from negative focal length lens 418 with along the first light source 425 of second direction outgoing, secondary light source is carried out to transmission processing, and the 3rd light source 418 is reflected to processing, make the optical axis 90-degree rotation of the 3rd light source.
The present embodiment has also increased by one group of optical axis the 5th collector lens 406 in a first direction between X mirror and fluorescent wheel 422, secondary light source to fluorescent wheel 422 outgoing is assembled, obtain reduced to the parallel beam of receive threshold, and transmit along first direction to X mirror.
In addition, the present embodiment is at X mirror and along having increased by four collector lens 426 of one group of optical axis in second direction between the eye point of the first light source 425 of second direction outgoing, the first light source 425 is assembled to processing, obtain reduced to the parallel beam of receive threshold, then transmit along second direction to X mirror.
In the present embodiment, the transmission light path of each light source is:
The first light source 401 is transformed into parallel beam after the collimation of collimating lens system 402 is processed, and is incident to catoptron 419; Catoptron 419 reflects the light beam of the first light source 401 to the first collector lens 417; The first collector lens 417, towards the lip-deep spectro-film of catoptron 419, reflects the light beam of the first light source 401 to negative focal length lens 418; After the convergence of negative focal length lens 418 is processed, form reduced to the parallel beam of receive threshold; The second dichroic sheet 405, the 3rd dichroic sheet 420 and the 4th dichroic sheet 421 all carry out transmission to the 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 processed, be radiated on fluorescent wheel 422.
When the first light source 401 is radiated at the phosphor area of fluorescent wheel 422, inspire the secondary light source (not shown) that direction is contrary with the incident direction of the first light source on fluorescent wheel, secondary light source transfers to the 5th collector lens 406 along first direction, through overconvergence, processes backward the second dichroic sheet 405 and the 4th dichroic sheet 421 transmission; Secondary light source processes through the transmission of the 4th dichroic sheet 421 and the reflection of the second dichroic sheet 405 is processed, and the optical axis of secondary light source is rotated by 90 degrees, then transfers in the second collector lens 412 and optical wand 413 along second direction.
When the first light source 401 be radiated at fluorescent wheel 422 see through region time, directly transmission.
The 3rd light source 416 is transformed into parallel beam 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 light beam of the 3rd light source 416 to assemble and is projected to negative focal length lens 418; After the light beam of the 3rd light source 416 that 418 pairs, negative focal length lens receive is assembled and processed, form reduced to the parallel beam of receive threshold; After the transmission processing of the second dichroic sheet 405 and the reflection processing of the 3rd dichroic sheet 420 and the 4th dichroic sheet 421, by the optical axis 90-degree rotation of the 3rd light source 416, consistent with second direction, then transfer in the second collector lens 412 and optical wand 413.
The first light source 425, along second direction outgoing, after the convergence of the 4th collector lens 426 is processed, obtains reduced to the parallel beam of receive threshold; This parallel beam is after the transmission processing of the second dichroic sheet 405 and the transmission processing of the 3rd dichroic sheet 420 and the 4th dichroic sheet 421, consistent with second direction, then transfers in the second collector lens 412 and optical wand 413.
In the present embodiment, in light-source system, by the fluorescent powder irradiating on fluorescent wheel with the first light source, inspire secondary light source, and in order to obtain the light beam with the identical predominant wavelength of the first light source of axle outgoing centered by first direction in optical wand 413, also introduced along the first light source of second direction transmission.In this case, the present embodiment has only increased the parts such as X mirror, the 5th collector lens 406, the 4th collector lens 426 and fluorescent wheel 422 on the basis of the first embodiment, the quantity of optics still less, light path is still shorter, so capacity usage ratio can be effectively improved compared with prior art.
In the present embodiment, can transposition along the first light source 401 and the 3rd light source 416 of first direction outgoing.
In addition, introduced X mirror in the present embodiment, can directly to each light source, reflect or transmission is processed, made the structure of light-source system more compact, size is less, 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 are identical with the second embodiment, and just the optical pickup apparatus is here fly's-eye lens 524, so as by the light supply apparatus of the present embodiment for compound eye projector.
Light source in the present embodiment is for for exciting first light source 501, the 3rd light source 516 of secondary light source and having the first light source 525 of identical predominant wavelength with the first light source.Light supply apparatus comprises: collimating lens system 502, the 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, fluorescent 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 transmitting procedure of each light source in the present embodiment is identical with the second embodiment, will repeat no more here.
Equally, with the same in embodiment 2, along the first light source 501 of first direction outgoing and the position of the 3rd light source 516, can exchange.
In addition, the light-receiving member that the second collector lens in the light supply apparatus of aforementioned the first embodiment and the second embodiment and optical wand form also can be replaced by fly's-eye lens, for receiving and collect the light source of light-receiving member to be entered.
Fig. 6 is according to the schematic diagram of the laser projection of the embodiment of the present 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 comprised of even optical illumination parts, display chip and projection lens.Light supply apparatus 600 provides available light source for laser projection.The light source that bare engine module 601 provides for receiving described light supply apparatus, even optical illumination parts are wherein to the further even light of light source, display chip generates picture under the real-time control of control module 603, and the picture of generation goes out picture to display through projection lens projects again.Described electric power driving module 602 provides driving electric energy for light supply apparatus and display chip.
By each embodiment provided by the invention, by each light sources transmit of different predominant wavelengths to the process of light-receiving member, the comparatively simple convergence reflex parts of optical principle have only been used, 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 X mirror in the second and the 3rd embodiment, repeatedly transmission and reflection function roll into one, from another angle, reduced the quantity of optics, and when further providing capacity usage ratio, for light supply apparatus miniaturization provides strong technical guarantee.
In addition, in each embodiment of the present invention, by comparatively simple structure, can meet the diversity requirement that light path changes, design ingeniously, but installation, modulation and maintenance difficulty are all lower.
Light supply apparatus in each embodiment of the present invention both, applicable to the laser projection generally using, can also be applicable to compound eye laser projection, had higher versatility.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also comprises these changes and modification interior.
Claims (16)
1. a light supply apparatus, comprises light source, and this light source comprises the 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;
The first light source and the 3rd light source be axle outgoing centered by the center line connecting direction of described reflection part, convergence reflex parts, convergence parts and dichroic parts respectively;
Described collimating components is positioned at the emitting side of the first light source and the 3rd light source, for processing that the light source receiving is collimated, obtains parallel beam;
The first light source reflection after described reflection part is processed collimation and convergence are to described convergence reflex parts;
Described convergence reflex parts reflect processing to the first light source of described reflection part reflection, and the 3rd light source after collimation is processed is assembled processing, and the first light source and the 3rd light source are transmitted to described convergence parts;
Described convergence parts are assembled processing to the first light source and the 3rd light source, and to described dichroic parts transmission;
Described dichroic parts by the first light source and secondary light source and from the 3rd light source-guide of described convergence parts for being incident in the same direction described light-receiving member.
2. light supply apparatus according to claim 1, is characterized in that, the center line connecting direction of described reflection part, convergence reflex parts, convergence parts and dichroic parts is first direction;
The first light source and the 3rd light source centered by first direction axle outgoing to described collimating components;
The first light source and the 3rd light source edge direction outgoing parallel or consistent with first direction after described collimating components is further processed collimation;
The optical axis of described light-receiving member drops in the second direction perpendicular to first direction;
The intersection point place that is centered close to first direction and second direction of described dichroic parts and between described convergence parts and described light-receiving member.
3. light supply apparatus according to claim 2, described reflection part comprises catoptron, receives from the first light source of described collimating components outgoing reflects and assembles and process, and to described convergence reflex parts, transmits;
Described convergence reflex parts comprise: the first collector lens, the first collector lens comprises spectro-film on the surface of described collimating components dorsad, with the first light source to described reflection part outgoing, reflect and the 3rd light source of described collimating components outgoing is assembled, and to described convergence parts transmission;
Described convergence parts comprise negative focal length lens, and the first light source from described convergence reflex parts and the 3rd light source are assembled to processing, obtain reduced to receive threshold and along the light beam of first direction outgoing.
4. light supply apparatus according to claim 3, is characterized in that, described catoptron is concave mirror, non-spherical reflector, or free-form surface mirror.
5. light supply apparatus according to claim 4, is characterized in that, described concave mirror comprises loop concave reflector.
6. according to the light supply apparatus described in any one in claim 3 to 5, it is characterized in that, described negative focal length lens and described catoptron form the first telescopic system, and described the first collector lens and described negative focal length lens form the second telescopic system;
The multiplying power of described the first telescopic system is greater than the multiplying power of described the second telescopic system.
7. according to the light supply apparatus described in any one in claim 3 to 5, it is characterized in that, described secondary light source is along described second direction outgoing;
Described dichroic parts comprise: the first dichroic sheet, for the first light source of described negative focal length lens outgoing and the 3rd light source are reflected, make the optical axis rotation of the first light source and the 3rd light source to described second direction, to described light-receiving member transmission, and secondary light source is carried out to transmission, along described second direction, to described light-receiving member, transmit.
8. light supply apparatus according to claim 7, is characterized in that, described light supply apparatus further comprises:
The 3rd collector lens, for to assembling processing along the secondary light source of described second direction transmission, forms reduced to the parallel beam of receive threshold, and along described second direction to described the first dichroic sheet transmission.
9. according to the light supply apparatus described in any one in claim 3 to 5, it is characterized in that, the first light source is further along second direction outgoing;
Described light supply apparatus further comprises: fluorescent wheel, comprise phosphor area, and for when being irradiated by the first light source, inspire secondary light source;
Described dichroic parts comprise: center is at first direction and second direction intersection point place, and the X mirror between described negative focal length lens and described light-receiving member, for the first light source-guide from described negative focal length lens is extremely transmitted to described fluorescent wheel along first direction, the first light source-guide along second direction outgoing is extremely transmitted to described light-receiving member along second direction, secondary light source from described fluorescent wheel is guided to along second direction and transmitted to described light-receiving member, and the 3rd light source-guide from described negative focal length lens is extremely transmitted to described light-receiving member along second direction.
10. light supply apparatus according to claim 9, is characterized in that, described X mirror comprises:
The second dichroic sheet, carries out transmission processing for the first light source to from described negative focal length lens with along the first light source of second direction outgoing, secondary light source is reflected to processing, and the 3rd light source is carried out to transmission processing;
The 3rd dichroic sheet, perpendicular to the second dichroic sheet, carries out transmission processing for the first light source to from described negative focal length lens with along the first light source of second direction outgoing, and the 3rd light source is reflected to processing;
The 4th dichroic sheet, perpendicular to the second dichroic sheet and with the 3rd dichroic sheet, be positioned at same plane, for carrying out transmission processing to the first light source from described negative focal length lens with along the first light source of second direction outgoing, secondary light source is carried out to transmission processing, and the 3rd light source is reflected to processing.
11. light supply apparatuses according to claim 9, is characterized in that, described light supply apparatus further comprises:
Between described X mirror and described fluorescent wheel, optical axis the 5th collector lens in a first direction, be used for assembling processing from the secondary light source of described fluorescent wheel, obtain reduced to the parallel beam of receive threshold, and transmit to described X mirror along first direction;
At the eye point of the first light source along second direction outgoing and the 4th collector lens between described X mirror, for the first light source along second direction outgoing is assembled to processing, obtain reduced to the parallel beam of receive threshold, and transmit to described X mirror along second direction.
12. according to the light supply apparatus described in any one in claim 2 to 5, it is characterized in that, centered by first direction, axle outgoing to the first light source of described collimating components and the position of the 3rd light source can exchange.
13. light supply apparatuses according to claim 1, is characterized in that, described light-receiving member comprises:
The second collector lens and optical wand, the second collector lens enters the described light source of described light-receiving member and assembles processing for treating, and described optical wand is for collecting the light source of processing through the convergence of the second collector lens;
14. light supply apparatuses according to claim 1, is characterized in that, described light-receiving member comprises: fly's-eye lens, and for receiving and collect the described light source of waiting to enter described light-receiving member.
15. 1 kinds of light source generation methods, it is characterized in that, for comprising the light supply apparatus of light source, collimating components, reflection part, convergence reflex parts, convergence parts, dichroic parts and light-receiving member, described light source comprises the first light source, secondary light source and the 3rd light source with different predominant wavelengths, and the method comprises:
Make the axially collimating components outgoing centered by the center line connecting direction of described reflection part, convergence reflex parts, convergence parts and dichroic parts respectively of the first light source and the 3rd light source;
The processing that collimates of the first light source that collimation parts receive and the 3rd light source, obtains parallel beam;
The first light source after collimation being processed by described reflection part reflexes to described convergence reflex parts;
By described convergence reflex parts, the first light source of described reflection part reflection is reflected to processing, the 3rd light source after collimation is processed is assembled processing, and the first light source and the 3rd light source are transmitted to described convergence parts;
By described convergence parts, the first light source and the 3rd light source are assembled to processing, and to described dichroic parts transmission;
By described dichroic parts by described secondary light source and from the first light source of described convergence parts and the 3rd light source-guide for being incident in the same direction described light-receiving member.
16. 1 kinds of laser projections, is characterized in that, this laser projection comprises: bare engine module, control module, electric power driving module and according to the light supply apparatus one of claim 1 to 14 Suo Shu, wherein,
Described bare engine module is comprised of even optical illumination parts, display chip and projection lens;
Described light supply apparatus provides available light source for laser projection;
Described bare engine module receives the light source that described light supply apparatus provides, even optical illumination parts are wherein to the further even light of light source, display chip generates picture under the real-time control of control module, and the picture generating goes out picture to display through projection lens projects again;
Described electric power driving module provides driving electric energy for described light supply apparatus and display chip.
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| JP5966843B2 (en) | 2012-10-18 | 2016-08-10 | ソニー株式会社 | Light source device and image display device |
| JP5928300B2 (en) | 2012-10-26 | 2016-06-01 | ソニー株式会社 | Light source unit, light source device, and image display device |
| CN103197686B (en) * | 2013-03-13 | 2016-03-23 | 上海理工大学 | Marker beacon indicator |
| CN103186025B (en) * | 2013-03-19 | 2015-04-29 | 海信集团有限公司 | Light source device, light source generation method and laser projector with light source device |
| CN104749867A (en) * | 2013-03-19 | 2015-07-01 | 海信集团有限公司 | Light source device, light source generating method and laser projector including light source device |
| CN103186024B (en) * | 2013-03-19 | 2015-04-22 | 海信集团有限公司 | Light source device, light source generation method and laser projector with light source device |
| TWI493275B (en) | 2013-04-20 | 2015-07-21 | Appotronics China Corp | A lighting device and a projection system |
| JP6206551B2 (en) * | 2016-06-30 | 2017-10-04 | ソニー株式会社 | Light source device and image display device |
| CN109085734A (en) * | 2017-06-13 | 2018-12-25 | 艾优优（深圳）技术有限公司 | Laser light source Multiplexing apparatus |
| CN107145029B (en) * | 2017-06-20 | 2018-10-26 | 海信集团有限公司 | Light supply apparatus |
| KR20200131219A (en) * | 2018-03-20 | 2020-11-23 | 소니 주식회사 | Image display device |
| CN110361913A (en) * | 2018-04-10 | 2019-10-22 | 鸿富锦精密工业(武汉)有限公司 | Laser diode module and laser projection system |
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