CN102402112A - Light source device, light source generation method and laser projector having same - Google Patents
Light source device, light source generation method and laser projector having same Download PDFInfo
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- CN102402112A CN102402112A CN2011103904930A CN201110390493A CN102402112A CN 102402112 A CN102402112 A CN 102402112A CN 2011103904930 A CN2011103904930 A CN 2011103904930A CN 201110390493 A CN201110390493 A CN 201110390493A CN 102402112 A CN102402112 A CN 102402112A
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Abstract
The application discloses a light source device, a light source generation method and a laser projector having same. The light source device comprises a laser device for sending a laser pulse signal and an optical fiber for guiding said laser pulse signal into a laser beam that is transmitted along the first direction. The light source device further comprises a first collimation part for handling the first collimation process for the laser beam transmitted along the first direction and then obtaining a laser beam with the emission full-angle smaller than or equal to the first angle threshold so as to emit the beam along the first direction; a scattering part disposed between the first collimation part and the second collimation part, which is used for speckling the laser beam processed by the first collimation and then emitting the beam along the first direction; and a second collimation part disposed along the first direction with the optical axis, which is used for handling the second collimation process for the received laser beam transmitted along the first direction and then obtaining a laser beam with the emission full-angle smaller than or equal to the second angle threshold. The invention can effectively obtain the input light source for the laser projector with efficient light use ratio.
Description
Technical field
The present invention relates to the optical 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.But the input light source that laser projection requires is an area source, and the area source of its input is had higher requirement.For example, for some laser projection, the area source of its input can only be the area source of diameter tens of millimeters magnitudes.Therefore, how to obtain the important topic that good input light source just becomes the development Color Laser Projection Technology.
At present,, through the conduction of light and coupling and the output point light source passes through a series of optical elements again, pointolite is converted into area source, uses for laser projection with the original light source of laser generator as laser projection.
In practice, there are many schemes that obtain the face LASER Light Source by a LASER Light Source.For example, one Chinese patent application CN101872071 discloses a kind of one-dimension optical-fiber compression coupling laser transmission device.Fig. 1 shows the structural representation of existing one-dimension optical-fiber compression coupling laser transmission device.As shown in Figure 1, one-dimension optical-fiber compression coupling laser transmission device is made up of semiconductor laser 10, optical fiber 11 and collimating optics lens combination 12.Wherein, semiconductor laser 10, optical fiber 11 and collimating optics lens combination 12 these three parts are sequentially encapsulated as a whole.Collimating optics lens combination 12 is a balsaming lens, comprises laser incident lens and exit lens.
Can confirm the parameter and the position relation of semiconductor laser 10, optical fiber 11, collimating optics lens combination 12 these three optical elements according to geometric optical theory; Specifically; The column optical fiber of optical fiber 11 for having the one dimension compression; Fiber radius is 0.5mm, and the distance of semiconductor laser between luminous is 0.07mm; Laser incident lens in the collimating optics lens combination 12 are plano-concave lens, and radius-of-curvature is 36.813mm, and exit lens is a biconvex lens, and radius-of-curvature is respectively 36.813mm and-20.045mm; And the distance between collimating optics lens combination 12 and the optical fiber 11 is 33.8mm.
In the disclosed scheme of CN101872071, though the laser pulse signal that semiconductor laser sends under the effect of optical fiber and collimation lens set, can be converted into area source from pointolite.But the technical scheme among the CN101872071 only is the situation to the laser beam of little emission full-shape, can not be applicable to the situation of the laser beam of big emission full-shape.For example, the diameter of the area source that existing technical scheme can not be guaranteed to obtain is tens of millimeters magnitudes, and the area source of promptly aforementioned collimating optics lens combination output can not satisfy the requirement of laser projection to the input light source.
In addition, CN101872071 has only provided parameter and the position relation of each optical element simply, and and unexposedly which kind of means to guarantee such parameter and position relation through.Be positioned at a millimeter magnitude in aforementioned parameters and position relation, when especially the precision of some parameters need reach hundredths even thousand fens positions, effectively do not adjust and bracing or strutting arrangement, such precision can't guarantee fully.Occur under the situation of deviation in parameter and position relation, there is the possibility that consumes significantly in the energy of laser, thereby light utilization efficiency is lower.
Therefore, exist a kind of to exporting the needs of the light supply apparatus that meets the required area source of laser projection.
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 available area source be provided for laser projection.
In an embodiment of the present invention; Light supply apparatus comprises that being used to launch the laser instrument of laser pulse signal and being used for the guiding of laser instrument emitted laser pulse signal is the optical fiber along the laser beam of first direction transmission; It is characterized in that; This light supply apparatus further comprises: first collimating components, scattering part and second collimating components; First collimating components is used for that the laser beam along first direction transmission is carried out first collimation to be handled, and is less than or equal to the laser beam of first angle threshold and makes laser beam after first collimation is handled along the first direction outgoing to obtain launching full-shape; Scattering part between first collimating components and second collimating components is used for the laser beam of handling through first collimation spot that dissipates is handled, and makes laser beam after the dissipation spot is handled along the first direction outgoing; Second collimating components that optical axis is arranged along first direction is used for that the laser beam along the first direction transmission that receives is carried out second collimation and handles, to obtain launching the laser beam that full-shape is less than or equal to second angle threshold.
Wherein, first angle threshold is 10 degree, and second angle threshold is 5 degree.
Wherein, first collimating components is installed with second collimating components is concentric.
Said first collimating components comprises and comprises first collimation lens of a slice positive lens at least that the focal length of first collimation lens is a positive focal length.
Said second collimating components comprises and comprises second collimation lens of a slice positive lens at least that the focal length of second collimation lens is a positive focal length.
Wherein, said optical fiber comprises the optical fiber head that is positioned near the place, end of first collimation lens, and the focal length of first collimation lens is f
1, the distance between the focus of the eye point of said optical fiber head and first collimation lens is at ± 0.1f
1In the scope.
Said scattering part is further spared optical processing to the laser beam of handling through first collimation.
Wherein, the focal length of second collimation lens is f
2, the distance of the focus of the eye point of the diffusion sheet in the said scattering part and second collimation lens is at ± 0.1f
2In the scope.
Said light supply apparatus further comprises: the main support of slab construction; As the bottom of said light supply apparatus and support said first collimating components and second collimating components, first collimating components and second collimating components can adjustment continuously on said main support upper edge first direction and the direction vertical with first direction.
First collimating components further comprises: lens barrel, and said lens barrel is used to hold first collimation lens; Integrate frame, said integration frame comprises: be used to hold the through hole along the first direction extension of said lens barrel, with the threaded hole that the edge second direction vertical with first direction extended, parts are fixed in said lens barrel on the said integration frame through being threaded.
Said integration frame further comprises: be used for a pair of U type fixed via that is connected with said main support through the parts that are threaded, this a pair of U type fixed via along the central axis of first direction center symmetric arrangement and this a pair of U type fixed via on the direction parallel with said main support faying face; Said main support further comprises: with at least one pair of corresponding first threaded hole of said a pair of U type fixed via.
The main part of said integration frame further comprises hollow space, makes said integration frame form cantilever beam structure.
Second collimating components further comprises: the second collimation lens support of platy structure, on the plane of second collimation lens support area maximum, comprise the through hole that an axis extends along first direction, and this through hole is used to hold second collimation lens that carries out second collimation.
The second collimation lens support further comprises: axis vertical with first direction and be parallel to the plane that combines with said main support, with a pair of U type pickup groove of first direction center symmetric arrangement, be used for being connected with said main support through the parts that are threaded; Said main support further comprises: a pair of U type connecting hole corresponding with said a pair of U type pickup groove.
Said light supply apparatus further comprises: the light shield of slab construction; Parts are connected with main support through being threaded; Be used to stop that the light except that said laser instrument emitted laser pulse signal gets into said light supply apparatus; The maximum plane of said light shield area is perpendicular to main support and first direction, and is formed with a through hole on the maximum plane of said area, supplies said optical fiber to pass; Said main support further comprises: at least one pair of second threaded hole corresponding with said light shield.
Said light supply apparatus further comprises: light-shield cover, be connected with said main support through the parts that are threaded, and this light shield holds first collimating components and second collimating components with said main support, so that luminous component is isolated from the outside; Said main support further comprises: at least one pair of three threaded hole corresponding with said light-shield cover.
Wherein, first direction is the line direction at first collimating components and the second collimating components center.
In another embodiment of the present invention, a kind of light source production method, this method comprises: the guiding of laser instrument emitted laser pulse signal is the laser beam along the first direction transmission; Said laser beam along first direction transmission is carried out first collimation handle, obtain launching full-shape and be less than or equal to the laser beam of first angle threshold and make laser beam after first collimation is handled along the first direction outgoing; The laser beam of handling through first collimation spot that dissipates is handled and the laser beam after the dissipation spot is handled is continued along the first direction outgoing; Offset speckle processing back and carry out the processing of second collimation, obtain launching the laser beam that full-shape is less than or equal to second angle threshold along first direction emitting laser light beam.
Wherein, first angle threshold is 10 degree, and second angle threshold is 5 degree.
Said method is carrying out further comprising after the processing of first collimation to the said laser beam along the first direction transmission: the laser beam to handling through first collimation is spared optical processing.
Laser projection of the present invention comprises: bare engine module, control module, electric power driving module and aforesaid light supply apparatus.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 input light source.Bare engine module receives the input light source that light supply apparatus provides, and even optical illumination parts wherein are to the further even light of input 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.Said electric power driving module is that light supply apparatus and display chip provide drive electricity.
In exemplary optical device of the present invention, after laser pulse signal was handled through first collimation, the emission full-shape was in 10 degree, after the processing of second collimation.The emission full-shape is in 5 degree.Twice collimation handled and can be guaranteed effectively that the diameter of shoot laser light beam is positioned at tens of millimeters magnitudes, can reach the requirement of laser projection for the input light source fully.Moreover such scheme is not the emission full-shape of disposable change laser beam, but comes progressively to adjust through the gradation collimation, when obtaining suitable shoot laser light beam, can also reduce the energy loss of light beam effectively.
In addition, include U type fixed via and U type pickup groove on the integration frame in the light supply apparatus of the present invention and the second collimation lens support respectively, be used for being connected with main support through the parts that are threaded.Parts can move in the edge direction parallel and vertical with first direction in this U type fixed via and the U type pickup groove under the state of not tightening owing to be threaded; Make that lens combination that each optical element in the light supply apparatus forms can adjustment continuously on both direction; Can guarantee the accurate position relation between each optics in this light supply apparatus fully, thereby guarantee that this light supply apparatus can provide high-quality input light source for laser projection; Simultaneously, position relation accurately between each optics also makes the area source of the final output of this light supply apparatus compare with the pointolite of laser instrument emission, and energy loss is less, and light utilization efficiency is higher.
Correspondingly, under the situation high in input light source quality, that light utilization efficiency is high, the laser projection among the present invention just can provide rich color, stereovision by force, picture display image clearly.
Even light supply apparatus of the present invention also can produce the area source that is applicable to laser projection for the bigger situation of emission full-shape.
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 structural representation of existing one-dimension optical-fiber compression coupling laser transmission device.
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 to the instantiation of light supply apparatus shown in Figure 2.
Fig. 4 is the structural representation according to the integration frame of the light supply apparatus of the embodiment of the invention.
Fig. 5 a, 5b and 5c are the three-view diagram according to the integration frame of the light supply apparatus of the embodiment of the invention.
Fig. 6 is the synoptic diagram according to the collimating mirror support of the light supply apparatus of the embodiment of the invention.
Fig. 7 is the synoptic diagram according to the main support of the light supply apparatus of the embodiment of the invention.
Fig. 8 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, the light supply apparatus during the present invention implements comprises laser instrument 20, optical fiber 21, first collimating components 22, scattering part 23 and second collimating components 24.Wherein, Laser instrument 20 is used to launch laser pulse signal; Optical fiber 21 is used for said laser instrument 20 emitted laser pulse signals guiding is the laser beam along first direction (being the optical axis of light beam, also is the line direction at first collimating components and the second collimating components center) transmission.The channeling direction of 21 pairs of laser pulse signals of optical fiber is that first direction is the formed direction of line between the focus of emitting head and first collimating components 22 of laser instrument 20.First collimating components 22 is used for that the laser beam along first direction transmission is carried out first collimation to be handled, and obtains launching that full-shape is less than or equal to the laser beam of first angle threshold and along the first direction outgoing; Scattering part 23 is used for the laser beam of handling through first collimation spot that dissipates is handled between first collimating components and second collimating components, and makes laser beam after the dissipation spot is handled along the first direction outgoing.The optical axis of second collimating components 24 arranges that along first direction second collimating components 24 is used for that the laser beam along the first direction transmission that receives is carried out second collimation to be handled, and obtains launching the laser beam that full-shape is less than or equal to second angle threshold.
After above-mentioned light supply apparatus, laser pulse signal were handled through first collimation, the emission full-shape was in first angle threshold, and after the processing of second collimation, the emission full-shape is in second angle threshold.Twice collimation handled and can be guaranteed effectively that the diameter of shoot laser light beam for example is positioned at tens of millimeters magnitudes, can reach the requirement of laser projection for the input light source fully.In addition, such scheme is not the emission full-shape of disposable change laser beam, but comes progressively to adjust through the gradation collimation, when obtaining suitable shoot laser light beam, can also reduce the energy loss of light beam effectively.
According to the present invention, first angle threshold can be 10 degree, and second angle threshold can be 5 degree.According to the specific requirement of laser projection, first angle threshold and second angle threshold can also be other angle values.
According to light supply apparatus of the present invention; The laser beams that 23 pairs of scattering parts are handled through first collimation spot that dissipates is handled and is spared optical processing; Even the laser beam with Gaussian beam changes the character of this laser beam through behind the scattering part, after even optical processing again along the first direction outgoing.Scattering part 23 can reduce the speckle of image itself, thereby improves the image quality of laser projection.
Light supply apparatus shown in Figure 2 further can comprise the main support (not shown), is used to support first collimating components and second collimating components.First collimating components and second collimating components all be designed to can be on said main support upper edge first direction and the direction vertical with first direction adjustment position continuously.The installation of scattering part can mounting means of the prior art.For example, scattering part can be fixed on the main support, also can be fixed on first collimating components.
In one embodiment of the invention, the light source production method comprises: the guiding of laser instrument emitted laser pulse signal is the laser beam along the first direction transmission; Said laser beam along first direction transmission is carried out first collimation handle, obtain launching that full-shape is less than or equal to the laser beam of first angle threshold and along the first direction outgoing; The laser beam of handling through first collimation spot that dissipates is handled and the laser beam after the dissipation spot is handled is continued along the first direction outgoing; Offset speckle processing back and carry out the processing of second collimation, obtain launching the laser beam that full-shape is less than or equal to second angle threshold along first direction emitting laser light beam.As an example, first angle threshold can be 10 degree, and second angle threshold can be 5 degree.
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 input light source.Bare engine module receives the input light source that light supply apparatus provides, and even optical illumination parts wherein are to the further even light of input 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.
Fig. 3 is the structural representation to the instantiation of light supply apparatus shown in Figure 2.Referring to Fig. 3, light supply apparatus comprises laser instrument 30, optical fiber 31, first collimation lens 32, diffusion sheet 33, second collimation lens 34.
First collimation lens 32 comprises a slice positive lens at least, also can be the lens combination that the multi-disc positive lens is formed, or the combination of a slice positive lens and other lenses at least.Among the present invention, the focal length of first collimation lens 32 is positive focal lengths.Behind the refraction action and collimation processing of optical fiber head emitting laser light beam through first collimation lens 32; Its spot diameter is further expanded as the millimeter magnitude; For example; Spot diameter can be 5mm, and forms the laser beam that the emission full-shape is less than or equal to first angle threshold, continues outgoing along first direction.First angle threshold for example is 10 degree.In the present embodiment, the focal length of supposing first collimation lens 32 is f
1, then the distance between the focal length of the eye point of optical fiber head and first collimation lens 32 is preferably and is positioned at ± 0.1f
1In the scope.The variation of the distance between the focal length of the eye point of optical fiber head and first collimation lens 32 also causes the emission full-shape of first collimation lens, 32 emitting laser light beams to change.If comprise 2 and above lens in first collimating components, then the focal length here is meant the focal length of the lens combination that all lens are formed in first collimating components.
33 pairs of laser beams that receive of diffusion sheet are spared optical processing, eliminate the coherence of laser beam simultaneously, so that obtain the laser beam through the dissipation spot.After handling through diffusion sheet 33, it is big that the emission full-shape of laser beam becomes, for example, and greater than 10 degree.
The light supply apparatus of present embodiment also comprises lens barrel 35, integrates frame 36, the main support of slab construction 37, the second collimation lens support 38, be used to stop the light shield 39 and the light-shield cover 40 of other light entering light supply apparatus except that laser instrument emitted laser pulse signal.
Wherein, lens barrel 35 is installed in to be integrated on the frame 36, is used to hold first collimation lens 32.
In example embodiment shown in Figure 3, first collimating components comprises first collimation lens 32, lens barrel 35 and integrates frame 36, the second collimation lens parts and comprises second collimation lens 34 and the second collimation lens support 38.Diffusion sheet 33 and additional accessory thereof are formed scattering part.
Fig. 4 is the structural representation according to the integration frame of the light supply apparatus of the embodiment of the invention, and Fig. 5 a, Fig. 5 b and Fig. 5 c are the three-view diagram according to the integration frame of the light supply apparatus of the embodiment of the invention.Wherein, Fig. 5 a is a front view of integrating frame, and Fig. 5 b is a vertical view of integrating frame, and Fig. 5 c is a side view of integrating frame.In Fig. 4 and Fig. 5 a, Fig. 5 b and Fig. 5 c; Integrate frame 36 and comprise the through hole 41 that is used to hold lens barrel 35 along the first direction extension; And the threaded hole 42 that extends of the edge second direction vertical with first direction, be used for lens barrel 35 being fixed in this integration frame 36 through the parts that are threaded.This integration frame 36 also comprise central axis on the direction parallel with main support 37 faying faces, along the first direction center U type fixed via 43 of symmetric arrangement, be used for through being threaded parts and being connected such as bolt with main support 37.The bolt that is connected with main support 37 is under tight condition not; Can in U type fixed via, the edge direction parallel and vertical move with first direction; Realize integrating frame 36 and main support 37 continuous uninterrupted position adjustment on both direction, thereby satisfy distance between the focal length of eye point and first collimation lens 32 of optical fiber head at ± 0.1f
1Requirement in the scope.In addition, the main body of integrating frame 36 comprises a hollow space, makes that integrating frame 36 forms cantilever beam structure, can either satisfy loading strength like this and can alleviate own wt again.
Fig. 6 is the synoptic diagram according to the collimating mirror support of the light supply apparatus of the embodiment of the invention.Referring to Fig. 6, the second collimation lens support 38 is a platy structure, comprises that on the plane of area maximum an axis along the through hole that first direction extends, is used to hold second collimation lens 34.This second collimation lens support 38 comprise also that axis is vertical with first direction and be parallel to the plane that combines with main support 37, along the first direction center U type pickup groove 60 of symmetric arrangement, be used for being connected with main support 37 through the parts that are threaded such as bolt.With in like manner last; This U type pickup groove can realize that the pass, position of the second collimation lens support 38 and main support 37 ties up to the continuous adjustment that reaches the direction parallel with first direction along the axis direction of U type pickup groove; And then can realize first collimation lens 32, diffusion sheet 33 and the continuous adjustment of second collimation lens, 34 formed lens combinations on aforementioned both direction, thereby can guarantee that distance between the focal length of eye point and second collimation lens 34 of diffusion sheet 33 is at ± 0.1f
2In the scope, f wherein
2Be the focal length of second collimation lens 34, if second collimation lens is the lens combination that comprises the multi-disc lens, then the focal length here is the focal length of this lens combination.The variation of the distance between the focal length of the eye point of diffusion sheet 33 and second collimation lens 34 also causes the emission full-shape of second collimation lens, 34 emitting laser light beams to change.In addition, it is concentric with first collimation lens 32 that this U type pickup groove also can be guaranteed to be installed on the second collimation lens support 38 second collimation lens 34.
Fig. 7 is the synoptic diagram according to the main support of the light supply apparatus of the embodiment of the invention.As shown in Figure 7; The major axis of main support 37 is parallel with first direction, comprise with integrate frame 36 on corresponding at least one pair of first threaded hole 71 of a pair of U type fixed via 43 and with the corresponding a pair of U type connecting hole 72 of a pair of U type pickup groove on the second collimation lens support 38.In the process of integrating frame is installed, utilize to be arranged on gathering sill (not shown) on the main support 38, that integration frame 36 is carried out pre-determined bit to integrating frame 36 location, to install.In addition, also comprise at least one pair of second threaded hole 73 and at least one pair of the 3rd threaded hole 74 on the main support 37, be respectively applied for through the parts that are threaded and be connected with light-shield cover 40 with light shield 39.
Correspondingly, when the light supply apparatus in adopting the embodiment of the invention shown in the earlier figures 2 to Fig. 7 produces light source, at first the guiding of laser instrument emitted laser pulse signal is the laser beam along the first direction transmission; Said laser beam along first direction transmission is carried out first collimation handle, obtain launching that full-shape is less than or equal to the laser beam of the first angle threshold degree and along the first direction outgoing; The laser beam of handling through first collimation spot that dissipates is handled, and the laser beam after the dissipation spot is handled is still along the first direction outgoing; Then, offset speckle processing back and carry out the processing of second collimation, obtain launching the laser beam that full-shape is less than or equal to second angle threshold along first direction emitting laser light beam.For example, first angle threshold is 10 degree, and second angle threshold is 5 degree.
In addition, after the said laser beam along the first direction transmission is carried out the processing of first collimation, can also spare optical processing to the laser beam of handling through first collimation.
Fig. 8 is the schematic diagram according to the laser projection of the embodiment of the invention.Referring to Fig. 8, laser projection comprises: foregoing light supply apparatus 80, bare engine module 81, control module 83 and electric power driving module 82.Wherein, bare engine module 81 is made up of even optical illumination parts, display chip and projection lens.Light supply apparatus is that laser projection provides available input light source.Bare engine module is used to receive the input light source that said light supply apparatus provides; Even optical illumination parts wherein are to the further even light of input light source; Display chip generates picture under the real-time control of control module, the picture of generation goes out picture to display through projection lens projects again.Said electric power driving module is that light supply apparatus and display chip provide drive electricity.
Through each embodiment provided by the invention, be input to the ray machine of laser projection after the laser point light source of optical fiber is converted into suitable area source, thereby can significantly improve the performance of laser projection, reduced light loss.Further; In the light supply apparatus that various embodiments of the present invention provide; Relative position is adjustable between relative position between the incident light exit of optical fiber and the collimating structure (for example, first collimating components) and the scattering part and second collimation lens, and assembly process process is strong.In addition, the use of light dispersion member of the present invention can also further improve the picture quality of laser projection.
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. light supply apparatus comprises that the laser instrument that is used to launch laser pulse signal is the optical fiber along the laser beam of first direction transmission with being used for the guiding of laser instrument emitted laser pulse signal, is characterized in that this light supply apparatus further comprises:
First collimating components, scattering part and second collimating components,
First collimating components is used for that the laser beam along first direction transmission is carried out first collimation to be handled, and is less than or equal to the laser beam of first angle threshold and makes laser beam after first collimation is handled along the first direction outgoing to obtain launching full-shape;
Said scattering part is used for the laser beam of handling through first collimation spot that dissipates is handled between first collimating components and second collimating components, and makes laser beam after the dissipation spot is handled along the first direction outgoing;
Second collimating components that optical axis is arranged along first direction is used for that the laser beam along the first direction transmission that receives is carried out second collimation and handles, to obtain launching the laser beam that full-shape is less than or equal to second angle threshold.
2. light supply apparatus according to claim 1, wherein, first angle threshold is 10 degree, second angle threshold is 5 degree.
3. light supply apparatus according to claim 1 is characterized in that, first collimating components is installed with second collimating components is concentric; First direction is the line direction at first collimating components and the second collimating components center; Said first collimating components comprises and comprises first collimation lens of a slice positive lens at least that the focal length of first collimation lens is a positive focal length; Said second collimating components comprises and comprises second collimation lens of a slice positive lens at least that the focal length of second collimation lens is a positive focal length.
4. light supply apparatus according to claim 3 is characterized in that, said optical fiber comprises the optical fiber head that is positioned near the place, end of first collimation lens,
The focal length of first collimation lens is f
1, the distance between the focus of the eye point of said optical fiber head and first collimation lens is at ± 0.1f
1In the scope;
The focal length of second collimation lens is f
2, the distance of the focus of the eye point of the diffusion sheet in the said scattering part and second collimation lens is at ± 0.1f
2In the scope.
5. light supply apparatus according to claim 4 is characterized in that, said light supply apparatus further comprises:
The main support of slab construction; As the bottom of said light supply apparatus and support said first collimating components and second collimating components, first collimating components and second collimating components can adjustment continuously on said main support upper edge first direction and the direction vertical with first direction;
First collimating components further comprises:
Lens barrel, said lens barrel is used to hold first collimation lens;
Integrate frame, said integration frame comprises:
Be used to hold through hole said lens barrel, that extend along first direction and
The threaded hole that the edge second direction vertical with first direction extended, parts are fixed in said lens barrel on the said integration frame through being threaded;
Second collimating components further comprises:
The second collimation lens support of platy structure comprises the through hole that an axis extends along first direction on the plane of second collimation lens support area maximum, this through hole is used to hold second collimation lens.
6. light supply apparatus according to claim 5; It is characterized in that; Said integration frame further comprises: be used for a pair of U type fixed via that is connected with said main support through the parts that are threaded, this a pair of U type fixed via along the central axis of first direction center symmetric arrangement and this a pair of U type fixed via on the direction parallel with said main support faying face;
Said main support further comprises: with at least one pair of corresponding first threaded hole of said a pair of U type fixed via.
7. light supply apparatus according to claim 6; It is characterized in that; The second collimation lens support further comprises: axis vertical with first direction and be parallel to the plane that combines with said main support, along the first direction center a pair of U type pickup groove of symmetric arrangement, be used for being connected with said main support through the parts that are threaded;
Said main support further comprises: a pair of U type connecting hole corresponding with said a pair of U type pickup groove.
8. light source production method, this method comprises:
The guiding of laser instrument emitted laser pulse signal is the laser beam along the first direction transmission;
Said laser beam along first direction transmission is carried out first collimation handle, obtain launching full-shape and be less than or equal to the laser beam of first angle threshold and make laser beam after first collimation is handled along the first direction outgoing;
The laser beam of handling through first collimation spot that dissipates is handled and the laser beam after the dissipation spot is handled is continued along the first direction outgoing;
Offset speckle processing back and carry out the processing of second collimation, obtain launching the laser beam that full-shape is less than or equal to second angle threshold along first direction emitting laser light beam.
9. light source production method according to claim 8, wherein, first angle threshold is 10 degree, second angle threshold is 5 degree.
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 7, 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 input light source;
Said bare engine module receives the input light source that said light supply apparatus provides; Even optical illumination parts wherein are to the further even light of input 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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