CN102375315B - Light source and the optical projection system of application thereof - Google Patents
Light source and the optical projection system of application thereof Download PDFInfo
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- CN102375315B CN102375315B CN201110234864.6A CN201110234864A CN102375315B CN 102375315 B CN102375315 B CN 102375315B CN 201110234864 A CN201110234864 A CN 201110234864A CN 102375315 B CN102375315 B CN 102375315B
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Abstract
Embodiments providing the optical projection system of a kind of light source and application thereof, this light source includes solid state light emitter array, is made up of a plurality of Sony ericsson mobile comm abs, is used for sending exciting light；Wavelength converter, carries and absorbs exciting light and produce the material for transformation of wave length of stimulated luminescence；Apparatus for shaping, between solid state light emitter array and colour wheel, carries out Shape correction for the exciting light sending this solid state light emitter array, and the hot spot that the exciting light making solid state light emitter array send projects on material for transformation of wave length has given shape.The optical power density that the embodiment of the present invention can reduce on material for transformation of wave length is relatively low, improves the light conversion efficiency of material for transformation of wave length.
Description
Technical field
The present invention relates to projection art, particularly relate to the optical projection system of a kind of light source and application thereof.
Background technology
With Sony ericsson mobile comm ab, such as solid-state semiconductor luminescent device, especially light emitting diode (LED, Light
Emitting Diode) it is that the scialyscope of light source has obtained using the most widely.Conform to light source light output
Requirement more and more higher, light source of projector based on light wavelength conversion is shown one's talent because of its stronger practicality, and the program is by source
Project from the high power light in one group of solid state light emitter to excite on material for transformation of wave length and produce the Gao Gong with predetermined dominant wavelength
Rate output light.Referring to Fig. 1, Fig. 1 is the structural representation of light source of projector in prior art.As it is shown in figure 1, light source of projector
Including: solid state light emitter array 1, collimator lens array 2, condenser lens 3, the Wavelength converter 4 of carrying material for transformation of wave length, receipts
Collection lens 5 and square rod 6.Fixed light source array 1 sends exciting light, collimator lens array 2 swashing from solid state light emitter array 1
Luminescence is collimated into nearly directional light, and the wavelength that this nearly directional light is converged on Wavelength converter 4 by condenser lens 3 further turns
The certain point of conversion materials, forms the projected spot as representated by J.Material for transformation of wave length 4 absorbs exciting light and produces stimulated luminescence, should
Stimulated luminescence incides square rod 6 after collecting lens 5 is collected, and launching spot homogenization shaping are obtained given shape by square rod 6
Emergent light spot using as projection hot spot.
The light spot shape of solid state light emitter array of the prior art is uncontrollable, generally circular in cross section or oval.For some
Special occasions, such as viewing area are the projector applications field of rectangle (such as but not limited to length-width ratio 4: 3), projector light
The output facula in source preferably rectangle in same ratio.When in fact using fixed light source array of the prior art, it is considered to
The unmatched problem of shape to its light spot shape Yu viewing area, generally uses above-mentioned square rod by circular or oval incidence
Spot shaping is above-mentioned rectangular emergent light spot.Refer to launching spot and emergent light spot that Fig. 2, Fig. 2 are square rods 6 in Fig. 1
The schematic diagram of shape relation.As in figure 2 it is shown, the ellipse of centre represents the launching spot of square rod, rectangle represents going out of square rod
Penetrating hot spot, the projection hot spot of the scialyscope i.e. mated with viewing area, in order to reduce luminous power while ensureing light utilization ratio
Density, certainly will be connected to rectangular light spots in ellipse light spot to be made.
Referring to Fig. 3, Fig. 3 is that the phototranstormation efficiency of fluorescent material that experiment is measured shows with the relation of the power density of exciting light
It is intended to.As it is shown on figure 3, along with the rising of optical power density, the phototranstormation efficiency of fluorescent material is in significantly declining.By to existing
The research of technology, the inventors found that: often uses great power LED due to solid state light emitter, even has high power
The laser diode of density, or along with the expansion of solid state light emitter array scale, converge to the excitation light power on the point of J shown in Fig. 1
The most too high and cause material for transformation of wave length (such as fluorescent material) temperature to rise, thus cause the light of material for transformation of wave length to change
Efficiency declines, and shortens the service life of Wavelength converter.
Summary of the invention
The embodiment of the present invention provides a kind of light source and the optical projection system of application thereof, it is possible to reduce the light on material for transformation of wave length
Power density.
Embodiments provide a kind of light source, including:
Solid state light emitter array, is made up of a plurality of Sony ericsson mobile comm abs, is used for sending exciting light；
Wavelength converter, carries and absorbs exciting light and produce the material for transformation of wave length of stimulated luminescence；
Apparatus for shaping, between solid state light emitter array and colour wheel, for the exciting light sending this solid state light emitter array
Carrying out Shape correction, the exciting light making solid state light emitter array send projects the hot spot on material for transformation of wave length and has specific shape
Shape.
The embodiment of the present invention additionally provides a kind of optical projection system, including above-mentioned light source.
Compared with prior art, the embodiment of the present invention includes following beneficial effect:
In order to reduce optical power density in prior art, need the most shaped the swashing being projected onto on material for transformation of wave length
The shape mated with viewing area it is connected in luminous spot shape；And in the embodiment of the present invention, owing to projecting ripple at exciting light
Before long transition material, first exciting light being shaped as given shape, therefore projecting the light spot shape on material for transformation of wave length can
With closer to the shape even equal to mated with viewing area, thus than in prior art preferably can only in be connected to and viewing area
The facula area of the shape of territory coupling is bigger so that under conditions of same light power, optical power density is relatively low, improves wavelength
The light conversion efficiency of transition material, extends the service life of Wavelength converter.
Accompanying drawing explanation
Fig. 1 is the structural representation of light source of projector in prior art；
Fig. 2 is the schematic diagram of the shape relation of the launching spot of square rod 6 and emergent light spot in Fig. 1；
Fig. 3 is the phototranstormation efficiency relation schematic diagram with the power density of exciting light of the fluorescent material that experiment is measured；
Fig. 4 is the structural representation of an embodiment of light source in the embodiment of the present invention；
Fig. 5 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Fig. 6 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Fig. 7 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Fig. 8 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Fig. 9 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Figure 10 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Figure 11 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Figure 12 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Figure 13 be in Figure 11 immobilising device 242 along the cross sectional representation of line A-A；
Figure 14 a is that in embodiment illustrated in fig. 11, out of focus is hot spot schematic diagram when 0；
Figure 14 b is that in embodiment illustrated in fig. 11, out of focus is hot spot schematic diagram when 0.2 millimeter；
Figure 15 is the structural representation of another embodiment of light source in the embodiment of the present invention；
Figure 16 is the structural representation of another embodiment of light source in the embodiment of the present invention.
Detailed description of the invention
Refer to the structural representation that Fig. 4, Fig. 4 are embodiments of light source in the embodiment of the present invention.As shown in Figure 4,
Light source includes solid state light emitter array 10, apparatus for shaping 20 and Wavelength converter 30.Solid state light emitter array 10 is by a plurality of solid
State luminescent device 11 forms, and is used for sending exciting light.Wavelength converter 30 carries and absorbs swashing from solid state light emitter array
Luminous and produce the material for transformation of wave length of stimulated luminescence.Apparatus for shaping 20 is positioned at solid state light emitter array 10 and Wavelength converter 30
Between, the exciting light for sending this solid state light emitter array 10 carries out Shape correction, and is thrown by the exciting light after Shape correction
Being mapped on Wavelength converter 30, the exciting light making solid state light emitter array 10 send projects the hot spot tool on material for transformation of wave length
There is given shape.
Sony ericsson mobile comm ab 11 can be LED, or laser diode, from the hot spot of the light of each Sony ericsson mobile comm ab 11
Shape can be circular or oval.Material for transformation of wave length includes fluorescent material, luminescent dye or nano luminescent material.The present embodiment
In the shape that given shape is the predetermined area similar to viewing area in optical projection system, such as 4: 3 Aspect Ratios and tool are pre-
Determine the rectangle of area.Apparatus for shaping can be diffraction optical element, fly's-eye lens to shaping elements such as, square rods, do not carry out
Limit.
In order to reduce optical power density in prior art, need to be projected onto the exciting light that material for transformation of wave length is the most shaped
The shape mated with viewing area it is connected in light spot shape (ellipse as shown in Figure 2)；And in the present embodiment, owing to exciting
Before light projects material for transformation of wave length, first exciting light is shaped as given shape (mating with viewing area as shown in Figure 2
Rectangle), then project material for transformation of wave length, therefore projecting the light spot shape on material for transformation of wave length can be closer to very
To equal to the shape mated with viewing area, thus than in prior art preferably can only in be connected to the shape mated with viewing area
Facula area bigger so that under conditions of same light power, optical power density is relatively low, improves the light of material for transformation of wave length
Conversion efficiency, extends the service life of Wavelength converter.
When Sony ericsson mobile comm ab uses laser diode, owing to the transmitting angle of laser is the least, it is caused to project ripple
The light distribution of the hot spot on long transition material is the most uneven, and the light intensity of spot center is very strong and is far above edge light intensity so that light
The optical power density at speckle center is too high.For solving the problem of light skewness, the embodiment of the present invention also provides for another reality of light source
Execute example.Referring to Fig. 5, Fig. 5 is the structural representation of another embodiment of light source in the embodiment of the present invention.As it is shown in figure 5, this reality
Execute example on the basis of embodiment illustrated in fig. 4, add a dodging device 40, be positioned at solid state light emitter array 10 and apparatus for shaping 20
Between, for before exciting light projects material for transformation of wave length, this exciting light is carried out dodging, makes exciting light project
The light distribution of the hot spot on material for transformation of wave length is more uniform, reduces the optical power density of spot center, thus carries further
The high light conversion efficiency of material for transformation of wave length.It is understood that dodging device 40 can also be positioned at apparatus for shaping 20 and ripple
Between long conversion equipment 30；Can also be one-body molded with apparatus for shaping 20, i.e. it is combined into one with apparatus for shaping 20 and can carry out at even light
Reason and the element of Shape correction, if diffraction optical element, fly's-eye lens are to, square rod etc..
Referring to Fig. 6, Fig. 6 is the structural representation of another embodiment of light source in the embodiment of the present invention.Implement shown in Fig. 6
Specifically include that apparatus for shaping and dodging device are combined into diffraction optical element 21 in place of example and the difference of embodiment illustrated in fig. 5.Diffraction
Optical element (DOE, Diffractive Optical Element) is a kind of special optical element, is usually by computer
Calculate the holographic element produced, by controlling shape, the degree of depth and the distribution of the micro structure (the such as optical wavelength order of magnitude) on its surface,
Make light that diffraction to occur when penetrating this element, produce the phase place change on corrugated.Diffraction optical element generally includes a plurality of spreading out
Penetrate unit, owing to the form of each diffraction element is different with the degree of depth, by selected difform diffraction element and combinations thereof, can
So that corrugated produced by each diffraction element is superimposed, and then the spatial light intensity distribution of the transmission light required for generation.Such as, beautiful
State's patent US7,251,412B2 is disclosed a kind of backlight module using DOE.The DOE element of different designs can have not
Same even light and shaping effect.
In the present embodiment, the exciting light that solid state light emitter array 10 is sent by diffraction optical element 21 carry out Shape correction and
Dodging, the exciting light making solid state light emitter array 10 send project the hot spot on material for transformation of wave length have given shape and
Light is evenly distributed.Diffraction optical element 21 in the present embodiment can include a plurality of diffraction corresponding with Sony ericsson mobile comm ab 11
Unit (diffraction element can with Sony ericsson mobile comm ab one to one, it is also possible to one-to-many), each diffraction element is at least one solid-state
The exciting light that luminescent device 11 sends carries out Shape correction and dodging obtains having the uniform hot spot of given shape
Beamlet.By designing the microscopic appearance of each diffraction element, each subbeams can be made to be light beam and project ripple
Long transition material, the hot spot that this light beam making combination obtain projects on material for transformation of wave length uniformly and has above-mentioned specific shape
Shape.Such as, the present embodiment can use the launching spot of a kind of any shape to be shaped to a given shape is 4: 3 length-width ratios
The rectangle with predetermined area of example and the diffraction optical element of uniform output facula.
Additionally, when Sony ericsson mobile comm ab is distributed in solid state light emitter array and more evacuates, can use and be spread out by a plurality of
Penetrate the diffraction optical element array of optical element composition, suitably to reduce the cost of light source of the present invention.
In the present embodiment, diffraction optical element is replaced to a pair fly's-eye lens to playing similar effect.
Fly's-eye lens is to including the plural lenses unit pair corresponding with Sony ericsson mobile comm ab, and each lens unit is to at least one
The exciting light that Sony ericsson mobile comm ab sends carries out Shape correction and dodging obtains having the son of emergent light spot of given shape
Light beam, and be light beam by each subbeams and project on material for transformation of wave length, this light beam making combination obtain is thrown
The hot spot being mapped on material for transformation of wave length uniformly and has above-mentioned given shape.Constitute the ginseng of the lens unit of two panels fly's-eye lens
Number (such as size) can be equally, it is also possible to different, say, that the lens unit between this two panels fly's-eye lens can be in one
One-to-one correspondence or the corresponding relation of one-to-many.Incident illumination can be cut by the plural lenses unit in first fly's-eye lens
It is divided into polylith, then the effect of plural lenses unit is formed and multiple has the uniform of given shape in second fly's-eye lens
Beamlet.By the parameter (such as curvature) of each lens unit in second fly's-eye lens of design, each subbeams can be made
For light beam and project material for transformation of wave length, the hot spot that this light beam making combination obtain projects on material for transformation of wave length is equal
Even and there is above-mentioned given shape.Due to superposition again after cutting and imaging respectively, light energy originally is re-distributed,
And the multiple uniformity that ensure that the hot spot projected on wavelength devices material as the process of superposition.
Referring to Fig. 7, Fig. 7 is the structural representation of another embodiment of light source in the embodiment of the present invention.In the present embodiment,
Dodging device is still that and includes diffraction optical element 21, but unlike embodiment illustrated in fig. 7, in the present embodiment, diffraction light
Learn element 21 each beamlet not to be combined, but each beamlet diffraction optical element sent by a Multiplexing apparatus 50a
It is combined and projects on material for transformation of wave length.It is to say, the apparatus for shaping in the present embodiment includes diffraction optical element
21 and Multiplexing apparatus 50a.Diffraction optical element 21 includes a plurality of diffraction element corresponding with luminescent device, each diffraction element
The exciting light sending at least one Sony ericsson mobile comm ab carries out Shape correction and dodging obtains having the uniform of given shape
The beamlet of emergent light spot.Each subbeams of diffraction optical element outgoing is light beam and projects by Multiplexing apparatus 50a
To material for transformation of wave length, the hot spot that this light beam making combination obtain projects on material for transformation of wave length uniformly and has specific shape
Shape.
In the present embodiment, Multiplexing apparatus 50a can be realized by collecting lens, collecting lens group or Fresnel Lenses, uses
The each beamlet being derived from diffraction optical element 21 is converged and projects toward material for transformation of wave length.
Additionally, the present embodiment also adds collimating lens array 60 on the basis of embodiment illustrated in fig. 6, it is positioned at solid-state
Between array of source 10 and diffraction optical element 21.Collimator lens array 60 is by a plurality of standards corresponding with Sony ericsson mobile comm ab 11
Straight lens 61 form, and every collimating lens 61 is directed at a Sony ericsson mobile comm ab 11.Collimator lens array 60 and solid state light emitter array
10 arrangements are in being parallel to diffraction optical element 21, and the nearly directional light that this collimator lens array 60 sends is perpendicular to diffraction optics unit
Part 21, the exciting light from this Sony ericsson mobile comm ab is collimated into nearly directional light and projects diffraction optical element 21, coupling
The specification of the diffraction optical element selected.
It is understood that identical with embodiment illustrated in fig. 6, the diffraction optical element in embodiment illustrated in fig. 7 can also
With fly's-eye lens to replacing.Multiplexing apparatus 50a combination is light beam from the fly's-eye lens each beamlet light to sending, and
It is projeced on material for transformation of wave length.
Except diffraction optical element and fly's-eye lens in addition to, it is also possible to square rod realize the shaping to light with uniformly
Change, below this is described in detail.Referring to Fig. 8, Fig. 8 is that in the embodiment of the present invention, the structure of another embodiment of light source is shown
It is intended to.As shown in Figure 8, the present embodiment includes with the difference of embodiment illustrated in fig. 7: instead of diffraction optics unit with square rod 22
Part 21, and the size of the incidence end of this square rod is more than the size of its exit end；Collimator lens array 60 is positioned at solid state light emitter array
Between 10 and square rod 22, the center that be arranged in incidence end with square rod 22 centripetal with solid state light emitter array 10 cambered surface as the center of circle
On；Multiplexing apparatus 50a is imaging len or imaging lens group, image-wise the uniform beam from square rod is projected toward wavelength
Transition material.
In the present embodiment, collimator lens array 60 is by a plurality of collimating lens 61 group corresponding with Sony ericsson mobile comm ab 11
Becoming, every collimating lens 61 is directed at a Sony ericsson mobile comm ab 11, to be collimated into closely by the exciting light from this Sony ericsson mobile comm ab
Directional light also projects the incidence end of square rod 22.Further, due to above-mentioned centripetal arrangement, from the exciting light of each Sony ericsson mobile comm ab
The incidence end of square rod 22 will be gathered.The effect of square rod 22 is to make incident illumination superimposed by constantly reflection wherein, thus
Going out the distribution of interruption-forming uniform light, it is achieved the exciting light sending solid state light emitter array 10 carries out dodging；The other side simultaneously
The shape of rod 22 exit ends is controlled, then light beam can play the effect of shaping, such as, made by square rod 22 exit end and have
The square of predetermined area, then the outgoing beam of square rod 22 is shaped as this square.In the present embodiment, apparatus for shaping also includes closing
Electro-optical device 50a, projects on material for transformation of wave length through the exciting light of square rod 22 shaping and even light through Multiplexing apparatus 50a, makes this swash
Luminescence projects the hot spot on material for transformation of wave length and uniformly and has given shape.
Preferably, the incidence end size of square rod 22 and the proportion of exit end size are 1.5: 1～4: 1, at this bar
Under part, square rod 22 has preferable even light effect.It is especially 2 when the incidence end size of square rod 22 and the ratio of exit end size:
1, and when the optimization ratio of the incidence end size of square rod 22 and square rod 22 length is 1: 8 the even light effect of square rod is more preferably.With square
As a example by emergent light spot (i.e. the exit end of square rod is shaped as square), the light collection efficiency of the present embodiment can reach 90% with
On.
Relatively big when the exit end size of square rod and limited beyond light source of the present invention emergent light spot size time, or by this
When the light of square rod exit end injection has the bigger angle of emergence (such as but not limited to more than 30 degree), in order to make light beam enter with suitable
Firing angle and spot size project on material for transformation of wave length, can use Multiplexing apparatus 50a image-wise from square rod 22
The uniform beam projection of exit end is toward material for transformation of wave length.It is understood that in the present embodiment, by controlling square rod 22 outgoing
Distance between size and square rod 22 and the Wavelength converter 30 of end size, the exciting light that can make square rod 22 outgoing is straight
Connecing the hot spot projecting on material for transformation of wave length and uniformly and have given shape, now apparatus for shaping and dodging device are combined into square rod
22, without there being Multiplexing apparatus 50a, the exciting light that solid state light emitter array 10 is sent by this square rod 22 carries out Shape correction and even
Optical processing, the hot spot that the exciting light making solid state light emitter array 10 send projects on material for transformation of wave length has given shape, because of
This present embodiment neutralizing light device 50a is dispensed with.
Additionally, solid state light emitter array 10 and collimator lens array 60 can also be arranged as embodiment as shown in Figure 7, as long as
The exciting light that solid state light emitter array 10 sends can be projected the incidence end of square rod 22.It is understood that in this enforcement
In example, the effect of collimator lens array 60 is in order to the exciting light from Sony ericsson mobile comm ab is collimated into nearly directional light (such as
But it is not limited to the angle of divergence light beam less than 15 degree), to improve light utilization efficiency.In the case of less demanding to light utilization efficiency, accurate
Collimating lens array 60 is also dispensed with.
Referring to Fig. 9, Fig. 9 is the structural representation of another embodiment of light source in the embodiment of the present invention.As it is shown in figure 9,
The present embodiment is identical with embodiment illustrated in fig. 8, and dodging device includes square rod 22, and this square rod 22 is to solid state light emitter array 10
The exciting light gone out carries out dodging, and apparatus for shaping includes this square rod 22 and Multiplexing apparatus 50a, this square rod 22 and Multiplexing apparatus
The exciting light that this solid state light emitter array 10 is sent by 50a carries out Shape correction, and the exciting light making solid state light emitter array 10 send is thrown
The hot spot being mapped on material for transformation of wave length has given shape.Include with in place of the difference of embodiment illustrated in fig. 7: entering of square rod 22
Penetrate the size of end and the equivalently-sized of exit end；Solid state light emitter array 10 and collimator lens array 60 are embodiment as shown in Figure 7
Equally arrange；The most also include a Multiplexing apparatus 50b between collimator lens array 60 and square rod, by this Multiplexing apparatus
The exciting light that collimator lens array 60 sends is converged to the incidence end of square rod 22 by 50b.
Referring to Figure 10, Figure 10 is the structural representation of another embodiment of light source in the embodiment of the present invention.Such as Figure 10 institute
Show, include in place of the present embodiment and the difference of embodiment illustrated in fig. 9: the chi being smaller in size than its exit end of the incidence end of square rod 22
Very little；The exciting light of square rod 22 outgoing is projected directly on material for transformation of wave length, i.e. nothing between square rod 22 and Wavelength converter 30
Multiplexing apparatus 50a.In the present embodiment, the exciting light that solid state light emitter array is sent by square rod 22 has been carried out at Shape correction and even light
Reason, the hot spot that the exciting light making solid state light emitter array send projects on material for transformation of wave length has given shape.
In the present embodiment, owing to the exit end size of square rod 22 is more than incidence end size, constant former according to etendue amount
Reason, the emergent light dispersion angle of square rod 22 is necessarily less than its incident illumination dispersion angle.Owing to emergent light angle changing rate is little, square rod 22
Emergent light can be projected directly at material for transformation of wave length without causing excessive hot spot deformation.Preferably, in the present embodiment
The exit end size of square rod and the proportion of incidence end size be 1.2: 1～2: 1.It is understood that be same as shown in Fig. 8
Embodiment, the collimator lens array 60 in the present embodiment is dispensed with Multiplexing apparatus 50b.
Square rod array can also be used to realize the function of above-mentioned square rod, and referring to Figure 11, Figure 11 is the embodiment of the present invention
The structural representation of another embodiment of middle light source.As shown in figure 11, the present embodiment includes solid state light emitter array 10, square rod array
23, lens arra 70, Multiplexing apparatus 50a and Wavelength converter 30.Square rod array 23 is by corresponding with Sony ericsson mobile comm ab 11
A plurality of square rods form, and the exciting light that one Sony ericsson mobile comm ab 11 sends is carried out each square rod Shape correction and dodging obtains
Beamlet to the emergent light spot with given shape.Lens arra 70 includes the plural lenses corresponding with square rod, each lens
Collect the beamlet from corresponding square rod outgoing the past Multiplexing apparatus 50a of projection.Multiplexing apparatus 50a is by square rod array 23 outgoing
Each subbeams is light beam, and the hot spot that this light beam making combination obtain projects on material for transformation of wave length has specific shape
Shape.
In the present embodiment, dodging device includes the square rod battle array being made up of a plurality of square rods corresponding with Sony ericsson mobile comm ab 11
Row 23, apparatus for shaping includes this square rod array 23 and Multiplexing apparatus 50a, and at least one Sony ericsson mobile comm ab is sent by each square rod
Exciting light carries out Shape correction and dodging obtains having the beamlet of uniform hot spot of given shape, Multiplexing apparatus
Each subbeams of square rod array 23 outgoing is light beam by 50a, and this light beam making combination obtain projects wavelength convert
Hot spot on material uniformly and has above-mentioned given shape.
In the present embodiment, in the case of the emergent light angle of each square rod is less, it is convenient to omit fall lens arra 70 and incite somebody to action
The emergent light of each square rod directly projects toward Multiplexing apparatus 50a.In view of shape and the incidence end size thereof of square rod, each square rod
Incidence end can also is that collects the exciting light from two or more Sony ericsson mobile comm abs.
In embodiment each shown in Fig. 8 to Figure 11, it is also possible to include at least one scattering sheet (not shown), be arranged at each square rod
Incidence end, for amplifying the dispersion angle of exciting light being incident in square rod incidence end, and then strengthen the even light effect of square rod.
The present invention also uses fiber waveguide to realize dodging.Referring to Figure 12 and Figure 13, Figure 12 is the embodiment of the present invention
The structural representation of another embodiment of middle light source, Figure 13 be in Figure 12 immobilising device 242 along the cross sectional representation of line A-A.
As shown in figure 12, include in place of the present embodiment and the difference of embodiment illustrated in fig. 7: the dodging device in the present embodiment includes with solid
The complex root fiber waveguide 241 of state luminescent device 11 correspondence, what at least one Sony ericsson mobile comm ab 11 was sent by each fiber waveguide 241 swashs
Luminescence carries out dodging；Apparatus for shaping includes an immobilising device 242, and the outlet of each fiber waveguide 241 of this immobilising device 242 is solid
Fixed arrangement is combined into given shape with the outlet by all fiber waveguides；Multiplexing apparatus 50a is image-wise by immobilising device 242
Light projects on material for transformation of wave length.Additionally, the present embodiment also including, the focusing coupled lens corresponding with each fiber waveguide is constituted
Focusing coupling lens array 80, instead of the collimator lens array 60 in embodiment illustrated in fig. 7, each focusing coupled lens handle
Light from least one Sony ericsson mobile comm ab 11 imports the fiber waveguide 241 corresponding with these lens.
In the present embodiment, realized the homogenization of light by the propagation in fiber waveguide 241, with going out in this fiber waveguide 241
Mouth obtains a uniform hot spot, and this light spot shape is identical with the core shape of fiber waveguide 241.It is to say, each light wave
Lead 241 exciting lights that at least one Sony ericsson mobile comm ab is sent and carry out Shape correction and dodging, had and fiber waveguide
The beamlet of the uniform hot spot that the shape of cross section of 241 sandwich layers is identical.As shown in figure 13,242 each light waves of immobilising device
The outlet stationary arrangement leading 241 is combined into given shape with the outlet by all fiber waveguides 241, then will be consolidated by Multiplexing apparatus 50a
Determining the light that device 242 sends and project on material for transformation of wave length, the exciting light making solid state light emitter array 10 send projects wavelength
Hot spot on transition material has given shape.
Preferably, the horizontal interface of fiber waveguide 241 sandwich layer in the present embodiment be shaped as rectangle or regular polygon (as just
Square, regular hexagon), the external protection of fiber waveguide 241 is the smaller the better, so that each optical fiber realizes seamless being spliced into most preferably.But
The sandwich layer cross section of existing fiber waveguide is easiest to processing with circle, it is contemplated that realizing cost, the present embodiment can be with existing core diameter
50um, overall diameter be 100um fiber waveguide as a example by carry out close-packed arrays as shown in fig. 13 that, be combined into required light spot shape
The approximate shapes of (such as rectangle).
In the present embodiment, by Multiplexing apparatus 50a, the light that immobilising device 242 sends is projected on material for transformation of wave length,
When this portfolio size being particularly suited for fiber waveguide 241 causes more greatly the cross-sectional area shown in Figure 13 bigger.It is understood that
When fiber waveguide 241 portfolio size is less so that when beam area that immobilising device 242 sends is less, it is also possible to not ECDC light dress
Put 50a, and directly the light that immobilising device 242 sends is projected on material for transformation of wave length.
Referring to Figure 14 a and Figure 14 b, Figure 14 a is that in embodiment illustrated in fig. 12, out of focus is hot spot schematic diagram when 0, Figure 14 b
It is that in embodiment illustrated in fig. 12, out of focus is hot spot schematic diagram when 0.2 millimeter.Assume that the luminous half-angle of fiber waveguide emergent light is about
25 degree, in the case of not using Multiplexing apparatus 50a, the light distribution in each fiber waveguide exit as shown in figures 14a, the present embodiment
It is arranged to, away from material for transformation of wave length certain distance (such as 0.2mm), reach by the outlet of fiber waveguide each on immobilising device 242 for this
Diffuse into the purpose of uniform light spots to out of focus, the hot spot being so projected directly at material for transformation of wave length from immobilising device 242 will
There is light distribution as shown in fig. 14b, it is seen that this hot spot is the uniform light spots of nearly rectangle.
In the various embodiments described above, Wavelength converter can be transmission-type or reflective.Referring to Figure 15, Figure 15 is this
The structural representation of another embodiment of light source in bright embodiment.As shown in figure 15, the present embodiment and the district of embodiment illustrated in fig. 7
Not part is: also includes light collecting device 90, is positioned at the side deviating from Multiplexing apparatus 50a of Wavelength converter 30, is used for
Collect the stimulated luminescence that material for transformation of wave length produces, and the residual excitation light not absorbed by material for transformation of wave length.The present embodiment
In, Wavelength converter 30 is that transmission-type, i.e. exciting light are incident from the first side of Wavelength converter 30, and stimulated luminescence is from wavelength
Second side of conversion equipment 30 sends.
Referring to Figure 16, Figure 16 is the structural representation of another embodiment of light source in the embodiment of the present invention.Such as Figure 16 institute
Show, be in place of the present embodiment and the difference of embodiment illustrated in fig. 15: the present embodiment also includes light path segregation apparatus, such as light splitting
Optical filter 91, light splitting optical filter 91 is between Multiplexing apparatus 50a and Wavelength converter 30.Light splitting optical filter 91 transmission excites
The stimulated luminescence that light and reflection wavelength transition material produce, as shown in figure 16, light L1 is the exciting light of incident light splitting optical filter,
Light L2 is the stimulated luminescence that material for transformation of wave length produces, and light L1 and light L2 is in the homonymy of Wavelength converter 30.Ripple
The stimulated luminescence that long transition material produces is split after optical filter reflects and is collected by light collecting device 90.In the present embodiment, wavelength
Conversion equipment 30 is reflective, i.e. exciting light is incident from the first side of Wavelength converter 30, and stimulated luminescence is also from wavelength convert
First side of device sends.
In the various embodiments described above, Wavelength converter 30 is not limited to a fixing device, and this Wavelength converter 30 also may be used
With relative to exciting light in motion (rotate or mobile) state, in order to by rotation illumination wavelength transition material come further up to
The purpose of protection material for transformation of wave length.Wavelength converter 30 can further include at least two and has different wave length conversion
The subregion of material, in this case, the purpose of the stimulated luminescence color that may also reach up transformation light source outgoing is irradiated in rotation.
The embodiment of the present invention also provides for a kind of optical projection system, can include the light source described in the various embodiments described above.Projection system
In system, other parts in addition to light source are known technology, do not repeat.
In the present embodiment, before projecting material for transformation of wave length at exciting light, first exciting light is shaped as specific shape
Shape, therefore projecting the light spot shape on material for transformation of wave length can be closer to the shape even equal to mated with viewing area
Shape, thus than in prior art preferably can only in the facula area of shape that is connected to mate with viewing area bigger so that in phase
Relatively low with optical power density under conditions of luminous power, improve the light conversion efficiency of material for transformation of wave length, extend wavelength convert
The service life of device.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (15)
1. a light source, it is characterised in that including:
Solid state light emitter array, is made up of a plurality of Sony ericsson mobile comm abs, is used for sending exciting light；
Wavelength converter, carries and absorbs described exciting light and produce the material for transformation of wave length of stimulated luminescence；
Apparatus for shaping, between described solid state light emitter array and Wavelength converter, for sending this solid state light emitter array
Exciting light carry out Shape correction, the exciting light making solid state light emitter array send projects the hot spot on described material for transformation of wave length
The shape mated with viewing area of shape close to or identical；
Dodging device, for before described exciting light projects described material for transformation of wave length, is carried out at even light this exciting light
Reason；
Wherein said apparatus for shaping and described dodging device are combined into square rod, and the size of the incidence end of described square rod is more than described square rod
The size of exit end.
Light source the most according to claim 1, it is characterised in that also include by a plurality of standards corresponding with described luminescent device
The collimator lens array of straight lens composition, every collimating lens is directed at Sony ericsson mobile comm ab described in, will send out from this solid-state
The exciting light of optical device is collimated into nearly directional light and projects the incidence end of described square rod.
Light source the most according to claim 2, it is characterised in that described collimator lens array and described solid state light emitter array to
The heart is arranged in the cambered surface as the center of circle of the center of the incidence end with described square rod.
Light source the most according to claim 1, it is characterised in that also include at least one scattering sheet, is arranged at described square rod
Incidence end.
Light source the most according to claim 1, it is characterised in that described Wavelength converter allows relative to described exciting light
In kinestate.
6. a light source, it is characterised in that including:
Solid state light emitter array, is made up of a plurality of Sony ericsson mobile comm abs, is used for sending exciting light；
Wavelength converter, carries and absorbs described exciting light and produce the material for transformation of wave length of stimulated luminescence；
Apparatus for shaping, between described solid state light emitter array and Wavelength converter, for sending this solid state light emitter array
Exciting light carry out Shape correction, the exciting light making solid state light emitter array send projects the hot spot on described material for transformation of wave length
The shape mated with viewing area of shape close to or identical；
Dodging device, for before described exciting light projects described material for transformation of wave length, is carried out at even light this exciting light
Reason；
Wherein said dodging device includes square rod, and the exciting light that described solid state light emitter array sends is carried out described even by described square rod
Optical processing, described apparatus for shaping includes described square rod and Multiplexing apparatus, and described square rod and Multiplexing apparatus are to described solid state light emitter battle array
The exciting light that row send carries out described Shape correction, and the size of the incidence end of described square rod is more than the chi of the exit end of described square rod
Very little.
Light source the most according to claim 6, it is characterised in that also include by a plurality of standards corresponding with described luminescent device
The collimator lens array of straight lens composition, every collimating lens is directed at Sony ericsson mobile comm ab described in, will send out from this solid-state
The exciting light of optical device is collimated into nearly directional light and projects the incidence end of described square rod.
Light source the most according to claim 7, it is characterised in that described collimator lens array and described solid state light emitter array to
The heart is arranged in the cambered surface as the center of circle of the center of the incidence end with described square rod.
Light source the most according to claim 6, it is characterised in that also include at least one scattering sheet, is arranged at described square rod
Incidence end.
Light source the most according to claim 6, it is characterised in that described Wavelength converter allows to excite relative to described
Light is kinestate.
11. 1 kinds of light sources, it is characterised in that including:
Solid state light emitter array, is made up of a plurality of Sony ericsson mobile comm abs, is used for sending exciting light；
Wavelength converter, carries and absorbs described exciting light and produce the material for transformation of wave length of stimulated luminescence；
Apparatus for shaping, between described solid state light emitter array and Wavelength converter, for sending this solid state light emitter array
Exciting light carry out Shape correction, the exciting light making solid state light emitter array send projects the hot spot on described material for transformation of wave length
Having given shape, the shape that described given shape mates with viewing area is close or identical；
Dodging device, for before described exciting light projects described material for transformation of wave length, is carried out at even light this exciting light
Reason；
Wherein said dodging device includes the square rod array being made up of a plurality of square rods corresponding with described luminescent device, described whole
Shape device includes described square rod array and Multiplexing apparatus, the exciting light that Sony ericsson mobile comm ab described at least is sent by each square rod
Carry out shaping and dodging obtains having the beamlet of uniform hot spot of described given shape, described Multiplexing apparatus general side
Each subbeams of rod array outgoing is light beam, and this light beam making combination obtain projects on described material for transformation of wave length
Hot spot uniformly and there is described given shape, the size of the incidence end of described square rod is more than the chi of the exit end of described square rod
Very little.
12. light sources according to claim 11, it is characterised in that also include by corresponding with described luminescent device a plurality of
The lens arra of lens composition, between described square rod array and Multiplexing apparatus, each lens are collected and are gone out from corresponding square rod
The beamlet penetrated projection are toward this Multiplexing apparatus.
13. light sources according to claim 11, it is characterised in that also include at least one scattering sheet, are arranged at described square rod
Incidence end.
14. light sources according to claim 11, it is characterised in that described Wavelength converter allows to excite relative to described
Light is kinestate.
15. 1 kinds of optical projection systems, it is characterised in that include the light source as according to any one of claim 1 to 14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610959430.5A CN106406001B (en) | 2010-08-16 | 2011-08-16 | Light source and its optical projection system of application |
| CN201110234864.6A CN102375315B (en) | 2010-08-16 | 2011-08-16 | Light source and the optical projection system of application thereof |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010256598.2 | 2010-08-16 | ||
| CN2010102565982 | 2010-08-16 | ||
| CN201010256598 | 2010-08-16 | ||
| CN201110234864.6A CN102375315B (en) | 2010-08-16 | 2011-08-16 | Light source and the optical projection system of application thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610959430.5A Division CN106406001B (en) | 2010-08-16 | 2011-08-16 | Light source and its optical projection system of application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102375315A CN102375315A (en) | 2012-03-14 |
| CN102375315B true CN102375315B (en) | 2016-12-14 |
Family
ID=
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