CN105607400A - Laser light source apparatus and laser projection equipment - Google Patents
Laser light source apparatus and laser projection equipment Download PDFInfo
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- CN105607400A CN105607400A CN201511021538.1A CN201511021538A CN105607400A CN 105607400 A CN105607400 A CN 105607400A CN 201511021538 A CN201511021538 A CN 201511021538A CN 105607400 A CN105607400 A CN 105607400A
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- light beam
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a laser light source apparatus. The laser light source apparatus comprises a laser array, a first light beam convergence part, a wavelength conversion part, and a second light beam convergence part, wherein the laser array is used for emitting laser to the light beam convergence parts; the first light beam convergence part is used for converging the laser from the laser array to the wavelength conversion part; the wavelength conversion part includes a wavelength conversion material; after the laser converged by the light beam convergence parts arrives at the wavelength conversion part, the laser passes through the wavelength conversion part and then is emitted, wherein the wavelength conversion material is used for emitting fluorescence of at least one color after the wavelength conversion material is activated; and the second light beam convergence part is used for converging the light emitted after the light passes through the wavelength conversion part. The invention also discloses laser projection equipment; the laser projection equipment comprises the laser light source apparatus, an optical device and a lens, wherein the laser light source apparatus is used for outputting light to the optical device based on time sequence; the optical device is used for converging the light from the laser light source apparatus to the lens; and the lens is used for projecting the light converged by the optical device. By adoption of the scheme, the optical path elements can be reduced, the optical path space can be diminished, the structure can be simplified, and the miniaturization requirement can be satisfied.
Description
Technical field
The present invention relates to optical devices technologies field, particularly a kind of laser light-source device and laser projectionEquipment.
Background technology
Along with miniaturization and the portable development of demand of laser projection device, need to provide swashing of a kind of miniaturizationThe laser light-source device of light projector equipment, especially miniaturization.
Fig. 1 is laser light-source device structure chart, as shown in Figure 1, and in laser light-source device of the prior artComprise laser instrument, what in example, illustrate is blue laser; Fluorescent wheel, is coated with green emitting phosphor and Huang on itLook fluorescent material (or red fluorescence powder), fluorescent wheel front and back is provided with collimation lens set; Due to indigo plantLook laser facula area from laser array outgoing is larger, and on fluorescent wheel, excites required hot spot less,Need to carry out the spot size that beam shaping meets fluorescence excitation requirement, conventional such as using by a slice convex lensThe telescopic system of mirror and a slice concavees lens composition bundle that first contracts. After contracting bundle, then through a slice diffusionSheet, the effect of diffusion sheet is that laser beam is spread, further homogenize, prevents less laser faculaWhen its light energy is uneven compared with high and energy density distribution, easily cause fluorescent wheel topical burn, reduce fluorescence conversionEfficiency.
Generally, fluorescent material district and laser-transmitting district are set on fluorescent wheel, along with the rotation of fluorescent wheel,Laser is periodically radiated at this two kinds of partitioned areas.
Blue laser after beam shaping by dichroic mirror reflects to fluorescent wheel front, by collimation lens setAfter assembling, form less hot spot incident fluorescence wheel surface, along with the rotation of fluorescent wheel, different fluorescent material districtsUnder irradiation in laser, thereby can send different fluorescence. Reflective fluorescence in order to illustrate in Fig. 1Wheel construction be have can mirror-reflection fluorescence smooth aluminum substrate, after fluorescence is excited and anti-by substrate surfacePenetrate, because light-emitting phosphor can be regarded lambert's body as, dispersion angle is larger, need to be through collimation lens setCollimation becomes parallel or approximately parallel light beam, then directive dichroscope.
After blue laser is transmitted through laser-transmitting district, from the outgoing of the fluorescent wheel back side, send out again after being convergence simultaneouslyLoose blue laser beams collimates through the collimation lens set at the fluorescent wheel back side again, and glimmering through being positioned atDichroscope (this is got back in the blue light loop (conventionally by lens, compositions such as speculum, diffusion sheets) of halo surroundingPlace's dichroscope is one and closes optical element, can be also that other have the eyeglass that closes light function, such as X closes lightMirror), blue light is through the reflection of dichroscope, and with green fluorescence, yellow fluorescence closes light, more common warpCross a slice condenser lens and focus on, carry out light beam convergence, incide filter wheel and carry out colour filter, to improve faceThe purity of look.
Wherein, filter wheel is synchronizeed and is rotated with fluorescent wheel, has corresponding color subregion. According to revolving of fluorescent wheelTurn sequential, in the time of fluorescent wheel output blue laser, blue laser sees through the blue laser transmission area of filter wheel,In the time of fluorescent wheel output green fluorescence, the green filter area that green fluorescence sees through filter wheel carries out green colour filter,In like manner, yellow fluorescence filters and obtains red fluorescence through the red filter area of filter wheel. Thereby defeated through filter wheelGo out to obtain three primary colours.
The output of three primary colours sequential enters optical wand, thereby provides illumination for ray machine part below.
From the above, in prior art, laser need to be through the beam shaping light path of multi-disc eyeglass compositionCan form less hot spot arrival fluorescent wheel and carry out exciting of fluorescence, and owing to adopting reflective fluorescent wheel,Before and after fluorescent wheel, all need to arrange collimation lens set, so that laser and fluorescence are collimated, and indigo plant need to be setLight circuit is so that the fluorescence of blue light and other two kinds of colors closes light.
Therefore, the deficiencies in the prior art are: due to the LASER Light Source framework in laser projection device, light pathNumber of elements is many, and optical path space is large, and structure relative complex cannot meet the requirement of miniaturization.
Summary of the invention
The invention provides a kind of laser light-source device and laser projection device, in order to reduce light path element, pressThe space of contracting light path, simplified structure, has met the requirement of miniaturization.
A kind of laser light-source device is provided in the embodiment of the present invention, has comprised: laser array, the first light beamAssemble parts, wavelength converting member, the second light beam convergence parts; Wherein:
Described laser array, for assembling parts Emission Lasers to light beam;
Described the first light beam is assembled parts, for the extremely described ripple of laser convergence that described laser array is launchedLong converting member;
Comprise the described wavelength converting member of material for transformation of wave length, for what assemble at described light beam convergence partsLaser penetrates after arriving after described wavelength converting member, wherein: material for transformation of wave length, for being excitedAfter sending out, send the fluorescence of at least one color;
Described the second light beam is assembled parts, for the light penetrating after described wavelength converting member is understoodPoly-.
Preferably, further comprise:
Diffusion sheet, is positioned at the dead ahead of described wavelength converting member, for described the first light beam is assembled to partsThe hot spot of the laser of assembling spreads homogenize.
Preferably, described the first light beam convergence parts or the second light beam convergence parts are reflector or reflector.
Preferably, the reflecting surface of described reflector or reflector is the non-free form surface of Rotational Symmetry or freely bentFace.
Preferably, it is Rotational Symmetry parabola that described the first light beam is assembled parts reflecting surface, wherein, and described lightThe position that the laser that beam convergence parts are assembled arrives described wavelength converting member is positioned at described Rotational Symmetry parabolicThe focus of face.
Preferably, be reflector if described the second light beam is assembled parts, assemble parts at described light beam and assembleLaser arrive after, the first focus that the position of penetrating after wavelength converting member is reflector, described filterThe position of colour wheel or described optical wand is the second focus.
Preferably, described reflector is ellipsoid cup.
Preferably, described wavelength converting member is transmission-type fluorescent wheel.
Preferably, described transmission-type fluorescent wheel comprises fluorescent material district and laser-transmitting district, and described fluorescent material district extremelyComprise less a kind of fluorescent material of color, wherein, after this fluorescent material district absorbing laser, inspire wavelength and be different from sharpThe fluorescence of light.
Preferably, described laser array is blue laser array, and described fluorescent material district is green emitting phosphorDistrict and yellow fluorescent powder district;
Or described laser array is violet lasers array, described fluorescent material district be blue colour fluorescent powder district,Green emitting phosphor district and red fluorescence powder district, or, blue colour fluorescent powder district, green emitting phosphor district and yellow fluorescencePowder district;
Or described laser array is ultraviolet laser array, described fluorescent material district be blue colour fluorescent powder district,Green emitting phosphor district and red fluorescence powder district, or, blue colour fluorescent powder district, green emitting phosphor district and yellow fluorescencePowder district;
Or described laser array comprises blue laser array and red laser array, described fluorescent materialDistrict is one of following fluorescent material district or its combination: green emitting phosphor district, yellow fluorescent powder district.
Preferably, described in, closing light parts is the dichroscope that is coated with deielectric-coating.
Preferably, described fluorescent material district is one of fluorescent material and following material or its combined hybrid sintering shapeBecome: quartz, glass, inorganic material, or fluorescent material is coated between two clear glasses.
Preferably, described inorganic material is inorganic ceramic material.
The embodiment of the present invention also provides a kind of laser projection device, comprising: ray machine, camera lens and described sharpRadiant device; Wherein:
Described laser light-source device, for exporting chronologically light to described ray machine;
Described ray machine, for assembling the light of described laser light-source device output to described camera lens;
Described camera lens, projects for the light that ray machine is assembled.
Beneficial effect of the present invention is as follows:
In the technical scheme providing in the embodiment of the present invention, laser light-source device can comprise laser array,Light beam is assembled parts and wavelength converting member; The first light beam is assembled parts for described laser array is sent outThe laser convergence of penetrating, to wavelength converting member, can directly become small light spot by the laser convergence receiving, and notNeed to lens, the large spot contracting of laser instrument transmitting be restrainted into small light spot with beam-shrinked mirror sheet, reduce beam-shrinked mirror sheetWith the use of lens, can also compress the space of light path; And second light beam assemble parts for will be through rippleThe light penetrating after long converting member is assembled, and adopts second light beam to assemble parts and just can assemble wavelengthThe light that converting member penetrates, does not need to adopt the optical elements such as collimation lens, speculum and condenser lensThe light that wavelength converting member penetrates be can assemble, collimation lens, speculum and condenser lens reduced like thisDeng the use of optical element. Therefore, laser light-source device and adopt the laser projection of this laser light-source deviceEquipment, can reduce light path element, the space of compression light path, and simplified structure, has met the requirement of miniaturization.
Further, adopt transmission-type fluorescent wheel as wavelength converting member, in described light beam convergent portionThe laser that part is assembled penetrates by transmission-type fluorescent wheel after arriving, and transmission-type fluorescent wheel can transmit laserWith the fluorescence exciting, reduce the use in collimation lens set and blue light loop, can further reduce light path unitPart, the space of compression light path, simplified structure.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms one of the present inventionPoint, schematic description and description of the present invention is used for explaining the present invention, does not form of the present inventionWork as restriction. In the accompanying drawings:
Fig. 1 is laser light-source device structure chart in background technology;
Fig. 2 is laser light-source device structure chart in the embodiment of the present invention;
Fig. 3 is fluorescent wheel plane distribution schematic diagram (a) in the embodiment of the present invention;
Fig. 4 is one-wavelength laser light supply apparatus structural representation in the embodiment of the present invention;
Fig. 5 is one-wavelength laser light supply apparatus output three primary colours light schematic flow sheet in the embodiment of the present invention;
Fig. 6 is fluorescent wheel generalized section in the embodiment of the present invention;
Fig. 7 is two-color laser light supply apparatus structural representation in the embodiment of the present invention;
Fig. 8 is fluorescent wheel plane distribution schematic diagram (b) in the embodiment of the present invention;
Fig. 9 is laser projection device structural representation in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
The scheme that embodiment 1 is a kind of laser light-source device, embodiment 2 and 3 is respectively with one-wavelength laser and twoLook laser is that example is specifically described the scheme of laser light-source device, and embodiment 4 establishes for a kind of laser projectionStandby scheme is a kind of concrete application of laser light-source device. Be specifically described below.
Embodiment 1
The embodiment of the present invention provides a kind of scheme of laser light-source device, is specifically described below.
Fig. 2 is laser light-source device structural representation, as shown in Figure 2, can comprise: laser instrument in deviceArray 201, the first light beam are assembled parts 202, wavelength converting member 203, the second light beam convergence parts 204;Wherein:
Described laser array, for assembling parts Emission Lasers to described light beam;
Described the first light beam is assembled parts, for the extremely described ripple of laser convergence that described laser array is launchedLong converting member;
Described wavelength converting member, for assembling at described light beam after the laser arrival of parts convergence, through instituteAfter stating wavelength converting member, penetrate;
Described the second light beam is assembled parts, for the light penetrating after described wavelength converting member is understoodPoly-.
In enforcement, further comprise: diffusion sheet, is positioned at the dead ahead of described wavelength converting member, for willThe hot spot that described the first light beam is assembled the laser of parts convergence spreads homogenize.
Because light beam is assembled parts to the less hot spot of laser beam focusing one-tenth, for fear of light spot energy densityInequality, is provided with diffusion sheet just above at wavelength converting member, light beam is assembled to parts and assemble the little light formingSpot spreads homogenize, and diffusion sheet can be static, also can move.
In enforcement, can further include:
Filter wheel, for carrying out colour filter by the light beam after focusing on;
Optical wand, receives light for the light of conveying being carried out to homogenize.
Like this, assemble at described light beam after the laser arrival of parts convergence, after described wavelength converting memberPenetrate, another light beam is assembled parts and again the light penetrating after described wavelength converting member is reflected and gatheredJiao carries out colour filter to filter wheel, improves the purity of color, finally enters optical wand and carries out homogenize receipts light. NeedThe light spot energy that closes light bright, the light penetrating after described wavelength converting member reflects and focuses onHigher, condenser lens may not bear high-octane like this hot spot, so the light beam after focusing on also can be firstReenter and penetrate filter wheel by optical wand homogenize, by filter wheel output three primary colours light.
In enforcement, described the first light beam assembles parts or the second light beam convergence parts are reflector or reflector.
In enforcement, the reflecting surface of described reflector or reflector is the non-free form surface of Rotational Symmetry or freely bentFace.
In this framework, use reflector or reflector to receive the laser that laser instrument sends, and, with reflectiveBowl or reflector have substituted the parts such as the collimation lens set, speculum, condenser lens at the wavelength converting member back side,Wherein reflector or reflector can be the non-free form surfaces of Rotational Symmetry, can be also free form surfaces. ReduceThe use of optical element. An optical surface that can be represented by sphere or asphericity coefficient around certainAfter one symmetry axis rotation 360 °/n of an angle (n is greater than 1 positive integer), overlap with initial curved surface,This curved surface is just called the non-free form surface of Rotational Symmetry. But, not strict definite the determining of freeform optics surfaceJustice, typically refers to the optical surface that cannot represent with sphere or asphericity coefficient, mainly refers to non-rotatingSymmetrical curved surface or the curved surface that can only represent with parameter vector.
In enforcement, it is Rotational Symmetry parabola that described the first light beam is assembled parts reflecting surface, wherein, described sharpLight device Array Method is to substantially parallel with the symmetry axis of parabola cup, and the laser that described light beam is assembled parts convergence arrivesThe position that reaches described wavelength converting member is positioned at the paraboloidal focus of described Rotational Symmetry. Can be by throwing oneAround 360 °/n of an a certain symmetry axis angle of rotation, (n is just being greater than 1 to the optical surface that object plane representsInteger) after, overlapping with initial curved surface, this curved surface is just called Rotational Symmetry parabola.
Concrete, laser array centre normal is positioned at the about 45mm in symmetry axis top of parabola cup, wavelengthReception place of converting member facula position is positioned in the focus of parabola cup, thus the laser that laser array sendsReflection through reflector is focused at a bit, arrives fluorescence thereby utilize parts just to complete laser beamConvergence on wheel, and utilize light reflection, light path is folded, compress the spatial volume of light path.
In enforcement, be reflector if described the second light beam is assembled parts, assemble at described light beam convergence partsAfter laser arrives, the first focus that the position of penetrating after wavelength converting member is reflector, described colour filterThe position of wheel or described optical wand is the second focus.
In enforcement, described reflector is ellipsoid cup.
Concrete, at the wavelength converting member back side, an ellipsoid cup is set again, carry on the back from fluorescent wheel for collectingThe laser that is divergent state and the fluorescence of face outgoing, its medium wavelength converting member light outgoing position is positioned at ellipsoidIn a focus of cup, optical wand or filter wheel are positioned in another focus. Owing to using wavelength converting memberThe reflector that the back side arranges reflects and assembles the light of outgoing successively, has carried out the folding, favourable of light pathIn the spatial volume that reduces light path.
Wavelength converting member 203 in Fig. 2 can be fluorescent wheel, concrete, can be transmission-type fluorescent wheel.Fig. 3 is fluorescent wheel plane distribution schematic diagram (a), as shown in the figure, comprises phosphor region and transmission area. Right belowFluorescent wheel is described further.
In enforcement, described wavelength converting member is transmission-type fluorescent wheel.
Use transmission-type fluorescent wheel can reduce the use of collimation lens set and the design in blue light loop.
In enforcement, described transmission-type fluorescent wheel comprises fluorescent material district and laser-transmitting district, and described fluorescent material district extremelyComprise less a kind of fluorescent material of color, wherein, thereby inspire wavelength difference after this fluorescent material district absorbing laserIn the fluorescence of laser.
Laser can penetrate the light after conversion through the fluorescent material district of transmission-type fluorescent wheel from the fluorescent wheel back side,Laser also can penetrate from the fluorescent wheel back side through the laser-transmitting district of transmission-type fluorescent wheel.
In order more clearly to understand the present invention, come this device to adopt below as an example of one-wavelength laser light supply apparatus exampleOptical element and position relationship thereof describe, and step to one-wavelength laser light supply apparatus output three primary colours lightSuddenly describe.
Embodiment 2
Fig. 4 is one-wavelength laser light supply apparatus structural representation, as shown in the figure, comprises blue laser array401, reflector or reflector 402, diffusion sheet 403, transmission-type fluorescent wheel 404, reflector or reflector405, filter wheel 406 and optical wand 407;
Blue laser array 401 normal parallels are in the symmetry axis of reflector or reflector 402, reflector orThe position that the laser that reflector 402 is assembled arrives transmission-type fluorescent wheel 404 is positioned at reflector or reflector 402Focus place;
Diffusion sheet 403, is positioned at the dead ahead of transmission-type fluorescent wheel 404;
Reflector or reflector 405, be positioned at the back side of transmission-type fluorescent wheel 404, at reflector or reflectorAfter 402 laser of assembling arrive, the position of penetrating after transmission-type fluorescent wheel 404 is reflector or reflectiveThe first focus of bowl 405, the position of filter wheel 406 or optical wand 407 is the second focus;
Filter wheel 406, is positioned at a side of the back side, reflector or the reflector 405 of transmission-type fluorescent wheel 404;
Optical wand 407, is positioned at a side of filter wheel 406.
Filter wheel 406 also can, before optical wand 407, still be considered reflector or reflector 405 reflection meetingsPoly-light arrives a bit, and filter wheel may not tolerate so high-octane hot spot, so, can adopt Fig. 4Shown in structure, optical wand 407 is front, light beam first carries out homogenize through optical wand and receives light, then by colour filterTake turns 406 colour filters.
Select reflector to describe the step of one-wavelength laser light supply apparatus output three primary colours light below.
Fig. 5 is one-wavelength laser light supply apparatus output three primary colours light schematic flow sheet, as shown in the figure, can compriseFollowing steps:
Step 501, blue laser array transmitting blue laser;
Step 502, reflector are assembled blue laser beams, can reduce beam-shrinked mirror sheet, lensUse, and by reflection can fold beam path to laser beam, compressed light path sharedSpace;
Step 503, diffusion sheet are assembled to reflector the small light spot forming and are spread homogenize, and diffusion sheet canBe static, also can move;
The hot spot of step 504, process diffusion homogenize penetrates from the transmission-type fluorescent wheel back side;
Step 505, reflector focus on the light beam penetrating from transmission-type fluorescent wheel;
Light beam after step 506, focusing carries out colour filter through filter wheel, improves the purity of color;
Step 507, enter optical wand carry out homogenize receive light.
Concrete structure to transmission-type fluorescent wheel and material and the blueness that blue laser array 401 is launchedLaser how through transmission-type fluorescent wheel 404 transmissions go out and be specifically described.
In enforcement, described laser array is blue laser array, and described fluorescent material district is green emitting phosphorDistrict and yellow fluorescent powder district;
Or described laser array is violet lasers array, described fluorescent material district be blue colour fluorescent powder district,Green emitting phosphor district and red fluorescence powder district, or, blue colour fluorescent powder district, green emitting phosphor district and yellow fluorescencePowder district;
Or described laser array is ultraviolet laser array, described fluorescent material district be blue colour fluorescent powder district,Green emitting phosphor district and red fluorescence powder district, or, blue colour fluorescent powder district, green emitting phosphor district and yellow fluorescencePowder district.
The present embodiment adopts blue laser array, and adopts green emitting phosphor district and the conduct of yellow fluorescent powder districtFluorescent material district, is not limited in this kind of situation in actual applications, and the present embodiment is only for instructing this areaHow technical staff uses this programme.
In enforcement, described fluorescent material district is one of fluorescent material and following material or its combined hybrid sintering shapeBecome: quartz, glass, inorganic material, or fluorescent material is coated between two clear glasses.
In enforcement, described inorganic material is inorganic ceramic material.
Concrete, fluorescent material district is positioned on transparency carrier, such as can be that fluorescent material and inorganic ceramic material mixClose the clear area that sintering forms, or fluorescent material is coated on clear glass. Wherein be positioned at the outer tool of fluorescent materialHave reflecting layer, this reflecting layer can see through optical maser wavelength, and the fluorescence that reflection inspires. When being fluorescent material and nothingWhen machine material mixed sintering, this skin is the outer surface of substrate mixture; When fluorescent material is clipped in layer glassWhen middle, this skin can refer to the inner side that the glass of laser entrance face contacts with phosphor powder layer. Fig. 6 is fluorescent wheelGeneralized section, as shown in the figure, wherein, dark part is reflecting layer, when a part has the outside angle of divergenceWhen the fluorescence of degree arrives this reflecting layer, can be reflected back, thereby fluorescence is through the transmission of fluorescent wheel transparent baseGo out, from the outgoing of the fluorescent wheel back side.
In concrete enforcement, when laser array is blue laser array, transmitting blue laser, fluorescent material districtBe green emitting phosphor district and yellow fluorescent powder district, blue laser is converted to green glimmering through green emitting phosphor districtLight, yellow laser is converted to yellow fluorescence through yellow fluorescent powder district, from yellow fluorescence, filters and obtains rednessFluorescence, blue laser, green fluorescence and red fluorescence penetrate from the transmission-type fluorescent wheel back side, form three primary colours.
Embodiment 3
Fig. 7 is two-color laser light supply apparatus structural representation, as shown in the figure, comprises blue laser array701, dichroscope 702, red laser array 703, reflector or reflector 704, diffusion sheet 705,Transmission-type fluorescent wheel 706, reflector or reflector 707, filter wheel 708 and optical wand 709; Fig. 7 and figureThe difference of 4 (one-wavelength laser light supply apparatus structural representations) is: increased dichroscope 702 and rednessLaser array 703, there is variation in the structure and material of transmission-type fluorescent wheel 706.
Concrete structure to transmission-type fluorescent wheel and material and to blue laser array 701 and red laserHow 706 transmissions of process transmission-type fluorescent wheel go out for the blue laser that device array 703 is launched and red laserRow illustrates.
In enforcement, described laser array comprises blue laser array and red laser array, described glimmeringGuang Fen district is one of following fluorescent material district or its combination: green emitting phosphor district, yellow fluorescent powder district;
In enforcement, if described laser array comprises blue laser array and red laser array, described inFluorescent material district is one of following fluorescent material district or its combination: green emitting phosphor district, yellow fluorescent powder district, enterOne step comprises: close light parts; Wherein, close light parts, for the redness of red laser array transmitting is swashedLight, and the blue laser of blue laser array transmitting, is converted to the light that optical path direction is identical.
In enforcement, described in to close light parts be the dichroscope that is coated with deielectric-coating.
In concrete enforcement, when described laser array is blue laser array and red laser array, send outPenetrate blue laser and red laser. Red laser and blue laser, from laser array outgoing, can pass throughOne close light parts (such as being coated with the dichroscope of deielectric-coating, a kind of color laser can be from dichroscope transmission,The laser of another kind of color is reflected, thereby the outgoing in the same direction of the laser of two kinds of colors completes and closes light)Close light, reflect by reflector after closing light, and spread incident fluorescence wheel after dissipation spot by diffusion sheet.
The laser-transmitting district of fluorescent wheel need to lighting according to blue laser array and red laser arraySequential arranges corresponding blue laser transmission area and red laser transmission area, and Fig. 8 is that fluorescent wheel plane distribution is shownIntention (b), the plane distribution of fluorescent wheel as shown in the figure. Blue laser can be from the transmission of blue laser transmission areaGo out, red laser can be gone out from the transmission of red laser transmission area. Fluorescent material district only need arrange green fluorescencePowder, also form green emitting phosphor district, and laser is converted to green fluorescence through green emitting phosphor district. GlimmeringHalo does Periodic Rotating motion, thereby can be successively from transmission-type fluorescent wheel back side transmission blue laser, redLook laser, and green fluorescence, form three primary colours.
Filter wheel 708 also can, before optical wand 709, still be considered reflector or reflector 707 reflection meetingsPoly-light arrives a bit, and filter wheel may not tolerate so high-octane hot spot, so, can adopt Fig. 7Shown in structure, optical wand 709 is front, light beam first carries out homogenize through optical wand and receives light, then by colour filterTake turns 708 colour filters.
According to above-mentioned enforcement, can reduce light path element, the space of compression light path, simplified structure, has metThe requirement of miniaturization.
The embodiment of the present invention also provides a kind of scheme of laser projection device, is specifically described below.
Embodiment 4
Fig. 9 is laser projection device structural representation, as shown in Figure 9, in equipment, can comprise: ray machine 901,Camera lens 902 and laser light-source device 903; Wherein:
Described laser light-source device, for exporting chronologically light to described ray machine;
Described ray machine, for assembling the light of described laser light-source device output to described camera lens;
Described camera lens, projects for the light that ray machine is assembled.
The laser projection device that the present embodiment provides can adopt arbitrary laser light-source device in above-described embodiment,Like this, can reduce light path element, the space of compression light path, simplified structure, meets laser projection device littleType and portable requirement.
In enforcement, described ray machine comprises optical wand, set of lenses and dmd chip; Wherein:
Described optical wand, receives light for the light of conveying being carried out to homogenize;
Described set of lenses, for focusing on dmd chip by the light of optical wand homogenize;
Described dmd chip, the light quantity that enters described camera lens for the light that regulates described optical wand to receive.
Concrete, ray machine part comprises optical wand structure, light path converting device and dmd chip. DMD coreSheet can be regarded as by extremely multiple small speculums and form, these micro-reflectors can be under current drives necessarilyIn angular range, overturn, to regulate the light quantity that enters camera lens, thereby make to present on image different colors.
In enforcement, described camera lens is ultrashort out-of-focus projection camera lens.
Adopt the ultrashort out-of-focus projection equipment of ultrashort out-of-focus projection camera lens, be applicable to family or portable use, ultrashortThe feature of out-of-focus projection's camera lens is than under still to project high-quality image in low projection.
How laser projection device being carried out to projection is below specifically described.
LASER Light Source can adopt the LASER Light Source in Fig. 4 or Fig. 7, i.e. monochrome or two-color laser light source sideCase, light source is mixed to form white light timing and exports three primary colours light, and three primary colours light enters ray machine by optical wandPart, through the modulation of DMD, then through refraction repeatedly, assemble and arrive camera lens, by camera lens one groupOptical mirror slip, comprises the repeatedly refraction of multi-disc convex lens, concavees lens, non-spherical lens, curved reflector etc.Carry out projection with reflection, form projected image.
According to above-mentioned enforcement, laser projection device can meet miniaturization and portable requirement.
In sum, in the technical scheme providing in the embodiment of the present invention, laser light-source device can comprise sharpLight device array, light beam are assembled parts and wavelength converting member; The first light beam is assembled parts for swashing describedThe laser convergence of light device array transmitting, to wavelength converting member, has reduced the use of beam-shrinked mirror sheet and lens, alsoCan compress the space of light path; The laser arrival that wavelength converting member is assembled for assemble parts at described light beamAfter, penetrate by wavelength converting member, reduce the use in collimation lens set and blue light loop; And secondLight beam is assembled parts for the light penetrating after wavelength converting member is assembled, and has reduced collimation thoroughlyThe use of the optical elements such as mirror, speculum and condenser lens. Therefore, laser light-source device and employing shouldThe laser projection device of laser light-source device, can reduce light path element, and the space of compression light path, simplifies knotStructure, has met the requirement of miniaturization.
Obviously, those skilled in the art can carry out various changes and modification and not depart from this present inventionBright spirit and scope. Like this, if of the present invention these amendment and modification belong to the claims in the present invention andWithin the scope of its equivalent technologies, the present invention be also intended to comprise these change and modification interior.
Claims (13)
1. a laser light-source device, is characterized in that, comprising: laser array, the first light beam are assembledParts, wavelength converting member, the second light beam are assembled parts; Wherein:
Described laser array, for assembling parts Emission Lasers to light beam;
Described the first light beam is assembled parts, for the extremely described ripple of laser convergence that described laser array is launchedLong converting member;
Comprise the described wavelength converting member of material for transformation of wave length, for what assemble at described light beam convergence partsLaser penetrates after arriving after described wavelength converting member, wherein: and described material for transformation of wave length, forAfter being stimulated, send the fluorescence of at least one color;
Described the second light beam is assembled parts, for the light penetrating after described wavelength converting member is understoodPoly-.
2. device according to claim 1, is characterized in that, further comprises:
Diffusion sheet, is positioned at the dead ahead of described wavelength converting member, for described the first light beam is assembled to partsThe hot spot of the laser of assembling spreads homogenize.
3. device according to claim 1 and 2, is characterized in that, described the first light beam convergent portionIt is reflector or reflector that part or the second light beam are assembled parts.
4. device according to claim 3, is characterized in that, described reflector or reflector anti-The face of penetrating is the non-free form surface of Rotational Symmetry or free form surface.
5. device according to claim 1 and 2, is characterized in that, described the first light beam convergent portionPart reflecting surface is Rotational Symmetry parabola, and wherein, the laser that described light beam is assembled parts convergence arrives described rippleThe position of long converting member is positioned at the paraboloidal focus of described Rotational Symmetry.
6. device according to claim 3, is characterized in that, if described the second light beam is assembled partsFor reflector, assemble at described light beam after the laser arrival of parts convergence, after wavelength converting member, penetratePosition first focus that is reflector, the position of described filter wheel or described optical wand is the second focus.
7. device according to claim 6, is characterized in that, described reflector is ellipsoid cup.
8. device according to claim 1 and 2, is characterized in that, described wavelength converting member isTransmission-type fluorescent wheel.
9. device according to claim 8, is characterized in that, described transmission-type fluorescent wheel comprises glimmeringGuang Fen district and laser-transmitting district, described fluorescent material district at least comprises a kind of fluorescent material of color, wherein, this is glimmeringAfter Guang Fen district absorbing laser, inspire the fluorescence that wavelength is different from laser.
10. device according to claim 9, is characterized in that, described laser array is blue sharpLight device array, described fluorescent material district is green emitting phosphor district and yellow fluorescent powder district;
Or described laser array is violet lasers array, described fluorescent material district be blue colour fluorescent powder district,Green emitting phosphor district and red fluorescence powder district, or, blue colour fluorescent powder district, green emitting phosphor district and yellow fluorescencePowder district;
Or described laser array is ultraviolet laser array, described fluorescent material district be blue colour fluorescent powder district,Green emitting phosphor district and red fluorescence powder district, or, blue colour fluorescent powder district, green emitting phosphor district and yellow fluorescencePowder district;
Or described laser array comprises blue laser array and red laser array, described fluorescent materialDistrict is one of following fluorescent material district or its combination: green emitting phosphor district, yellow fluorescent powder district.
11. according to the device described in claim 9 or 10, it is characterized in that, described fluorescent material district is glimmeringOne of light powder and following material or its combined hybrid sintering form: quartz, glass, inorganic material, or,Fluorescent material is coated between two clear glasses.
12. devices according to claim 11, is characterized in that, described inorganic material is inorganic potteryCeramic material.
13. 1 kinds of laser projection device, is characterized in that, comprising: ray machine, camera lens and claim 1To 12 arbitrary described laser light-source devices; Wherein:
Described laser light-source device, for exporting chronologically light to described ray machine;
Described ray machine, for assembling the light of described laser light-source device output to described camera lens;
Described camera lens, projects for the light that ray machine is assembled.
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| CN201511021538.1A CN105607400A (en) | 2015-12-29 | 2015-12-29 | Laser light source apparatus and laser projection equipment |
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| CN201511021538.1A CN105607400A (en) | 2015-12-29 | 2015-12-29 | Laser light source apparatus and laser projection equipment |
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| CN107145029A (en) * | 2017-06-20 | 2017-09-08 | 海信集团有限公司 | Light supply apparatus |
| CN107861321A (en) * | 2016-09-22 | 2018-03-30 | 上海激亮光电科技有限公司 | A kind of hybrid laser projection of optical fiber fluorescence wheel and its control method |
| CN108663884A (en) * | 2018-04-29 | 2018-10-16 | 中国华录集团有限公司 | A kind of three color laser light projection display systems |
| CN110345394A (en) * | 2018-04-04 | 2019-10-18 | 深圳市Tcl高新技术开发有限公司 | A kind of light collecting device |
| CN110632818A (en) * | 2019-11-06 | 2019-12-31 | 四川长虹电器股份有限公司 | Laser projection light source module device |
| CN112835254A (en) * | 2019-11-22 | 2021-05-25 | 刘雪婷 | Light source module |
| CN113311655A (en) * | 2021-06-18 | 2021-08-27 | 青岛海信激光显示股份有限公司 | Projection light source and projection apparatus |
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