CN109656084A - A kind of laser light source mould group and laser projection device - Google Patents
A kind of laser light source mould group and laser projection device Download PDFInfo
- Publication number
- CN109656084A CN109656084A CN201710933467.5A CN201710933467A CN109656084A CN 109656084 A CN109656084 A CN 109656084A CN 201710933467 A CN201710933467 A CN 201710933467A CN 109656084 A CN109656084 A CN 109656084A
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- laser
- polarization
- light source
- light
- mould group
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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
-
- 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
- G03B21/2073—Polarisers in the lamp house
-
- 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)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
The present invention discloses a kind of laser light source mould group and laser projection device, is related to laser light source technical field.It is able to solve laser light source mould group in the prior art structure is complicated, occupied space is big, the problems in the apparatus structure for being dfficult to apply to microsize.Laser light source mould group of the invention includes laser group, and along the light direction polarization layer, light combination unit and the wavelength conversion component that set gradually of laser group.Laser group issues the first polarization blue laser.Wavelength conversion component includes phosphor region and polarization converted area；Phosphor region receives the first polarization blue laser, to generate red fluorescence and/or green fluorescence and reflect；Polarization converted area receives the first polarization blue laser, and the first polarization blue laser is converted to the second polarization blue laser and is reflected.Light combination unit reflects the red fluorescence and/or green fluorescence reflected by wavelength conversion component.The second polarization blue laser that polarization layer reflection is reflected by wavelength conversion component.
Description
Technical field
The present invention relates to laser light source technical field more particularly to a kind of laser light source mould groups and laser projection device.
Background technique
Laser is that a kind of brightness is high, high directivity, the good coherent source of monochromaticjty, with the continuous maturation of laser technique
And development, laser are more and more widely used the every field in production and living.
In projection art, laser light source is widely used in projection device as projection light source.Projection is set at present
Laser light source applied in standby usually uses low power laser constitution laser array, provide in three primary colours one kind or
The light of two kinds of colors, the light beam that laser issues in laser array transmits in the optical path after beam shaping, and is incident to glimmering
Halo, the mode that excitated fluorescent powder generates the light of other colors in three primary colours are illuminated.
Laser light-source device in the prior art, as shown in Figure 1, the Laser output direction in laser group 10 is provided with two
To Look mirror 11, wherein dichroscope 11 is set as making the light of blue wave band to reflect, and the light of other color optical bands penetrates, two
Reflection microscope group 13 and fluorescent wheel 12 are set to the reflecting light direction of Look mirror 11, further include filter wheel 14 and optical wand 15.It is exemplary,
Laser group 10 issues blue monochromatic laser, and blue laser changes direction incident fluorescence wheel 12 after the reflection of dichroscope 11, glimmering
Transmission region is divided on the wheel face of halo 12 and fluorescence area, fluorescence area include successively to set along the direction of rotation of fluorescent wheel 12
The green emitting phosphor and red fluorescence powder set, green emitting phosphor and red fluorescence powder are arranged on reflection substrate, in fluorescent wheel 12
In rotary course, transmission region and fluorescence area are radiated at transmission region blue laser by fluorescent wheel 12 alternately across primary optical axis
Through and by after the light circuit of mirror lens group 13, is reflected again in the another side of dichroscope 11 and change direction, be radiated at
Green fluorescence and red fluorescence are respectively formed after the blue laser excitation fluorescence of fluorescence area and since the reflection of reflection substrate is made
With, be again passed through dichroscope 11, green fluorescence and red fluorescence and blue laser after light combination at dichroscope 11 along go out light
Outgoing is the laser light source for including three primary colours after direction incidence filter wheel 14 and optical wand 15.
The laser light-source device of above structure is returned since a fairly large number of optical element is arranged in particular for changing light out
The reflection microscope group 13 in road direction makes the structure of entire laser light-source device complex, and optical path occupied space size is big, it is difficult to
Applied in various micro-projection devices to provide laser light source.
Summary of the invention
The present invention provides a kind of laser light source mould group and laser projection device, is able to solve laser light source in the prior art
Structure is complicated for mould group, occupied space is big, the problems in the apparatus structure for being dfficult to apply to microsize.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of laser light source mould group, including laser group, and going out along laser group
Polarization layer, light combination unit and the wavelength conversion component that light direction is set gradually.Laser group issues the first polarization blue laser.Wave
Long transition components include phosphor region and polarization converted area.Phosphor region receives and is issued by laser group and pass through polarization layer and light combination
First polarization blue laser of unit, to generate red fluorescence and/or green fluorescence and reflect；Polarization converted area is received by swashing
Light device group issues and passes through the first polarization blue laser of polarization layer and light combination unit, and the first polarization blue laser is converted to
Second polarization blue laser simultaneously reflects.Light combination unit reflects the red fluorescence and/or green fluorescence reflected by wavelength conversion component,
And it transmits the first polarization blue laser issued by laser group and polarizes blue laser by the second of wavelength conversion component reflection.
The second polarization blue laser that polarization layer reflection is reflected by wavelength conversion component.
A kind of laser light source mould group provided by the invention, by the polarization layer of setting, so that issued by laser group
One polarization blue laser all penetrates, and light combination unit has the work that can be penetrated the light of blue light wavelength and reflect other wavelength lights
With polarize blue laser through the first of polarization layer has light combination unit transmission, and incident wavelength transition components, wavelength convert group again
The phosphor region of part at least one of receives the first polarization blue laser and generates red fluorescence, green fluorescence and reflects, wavelength
The polarization converted area of transition components receives the first polarization blue laser and is converted to the second polarization blue laser back reflection, by wave
At least one of the red fluorescence of long transition components reflection, green fluorescence and the second polarization blue laser return to light combination list
Member, at least one of red fluorescence, green fluorescence reflect at light combination unit, and the second polarization blue laser penetrates light combination unit
It is again passed through the outgoing of light combination unit by polarization layer reflection, to form the laser light source for including three primary colours.This laser light source mould
Group is compact-sized, and light path element quantity reduces, and reduces optical path space, realizes the micromation of laser light source mould group.
Second aspect, the present invention provides a kind of laser projection devices, including ray machine, camera lens, and such as any of the above-described
Laser light source mould group.
Compared with prior art, the laser projection device of the embodiment of the present invention has the advantage that is miniaturized by setting
The laser light source mould group of structure exports after enabling offer laser source to carry out beam modulation in ray machine to lens imaging, and
It is projected to projection medium further to form projected picture, and effectively reduces the structure size of entire laser projection device,
So that the laser projection device of the embodiment of the present invention minimizes, convenient for being applied to more projection occasions, and it is convenient for carrying.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of laser light source mould group in the prior art；
Fig. 2 is the structural schematic diagram of the laser light source mould group of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the wavelength conversion component of the embodiment of the present invention；
Fig. 4 is one of the A-A cross-sectional view of Fig. 3；
Fig. 5 is that the laser light source mould group of the embodiment of the present invention is additionally provided with the structural schematic diagram of shaping lens group；
Fig. 6 is that the laser light source mould group of the embodiment of the present invention is additionally provided with the structural schematic diagram of collimation lens set；
Fig. 7 is that the laser light source mould group neutralizing light unit of the embodiment of the present invention further includes the structural schematic diagram of condenser lens；
Fig. 8 is that the laser light source mould group neutralizing light unit of the embodiment of the present invention further includes the structural schematic diagram of diffusion layer；
Fig. 9 is that the laser light source mould group of the embodiment of the present invention further includes the structural schematic diagram of red light source；
Figure 10 is the two of the A-A cross-sectional view of Fig. 3.
Appended drawing reference:
10- laser group；11- dichroscope；12- fluorescent wheel；13- reflects microscope group；14- filter wheel；15- optical wand；20- swashs
Light device group；201- laser；202- red light source；21- polarization layer；22- light combination unit；221- dichroscope；222- focuses saturating
Mirror；223- diffusion layer；224- optical tunnel；23- wavelength conversion component；231 colour filters；232- phosphor powder layer；233- reflection substrate；
234- polarization form converter；235- rotation axis；236- motor；24- shaping lens group；241- looks in the distance microscope group；242- diffusion sheet；
25- collimation lens set；The phosphor region X-；Y- polarization converted area.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, the instructions such as term " center ", "upper", "lower", "inner", "outside"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
Or it is more than two.
The present invention provides a kind of laser light source mould groups, as shown in Fig. 2, including laser group 20, and along laser group
Polarization layer 21, light combination unit 22 and the wavelength conversion component 23 that 20 light direction is set gradually.Laser group 20 issues first
Polarize blue laser.Wherein, laser group 20 includes at least one laser 201, when laser group 20 includes multiple lasers
When 201, multiple lasers 201 array arrangement as shown in Figure 2, so that multiple lasers 201 are jointly flat along light direction outgoing
Capable laser beam.Wavelength conversion component 23 includes phosphor region X and polarization converted area Y.X reception in phosphor region is sent out by laser group 20
The the first polarization blue laser transmitted out and by polarization layer 21 and light combination unit 22, it is glimmering to generate red fluorescence and/or green
Light, and by the fluorescent reflection of generation；Polarization converted area Y, which is received, to be issued by laser group 20 and passes through polarization layer 21 and light combination list
First polarization blue laser is converted to the second polarization blue laser, and will turned by the first polarization blue laser of 22 transmission of member
The the second polarization blue laser for having changed polarization state is also reflected.The red fluorescence that reflected by wavelength conversion component 23 and/or green
Color fluorescence reflects at light combination unit 22, and the second polarization blue laser reflected by wavelength conversion component 23 is through light combination element 22
Afterwards by the reflection of polarization layer 21, again return at light combination unit 22 transmit, and with light combination unit 22 reflect red fluorescence and/
Or green fluorescence light combination outgoing.Light combination unit 22 reflects the red fluorescence and/or green fluorescence reflected by wavelength conversion component 23,
And it transmits the first polarization blue laser issued by laser group and polarizes blue laser by the second of wavelength conversion component reflection.
The second polarization blue laser that polarization layer reflection is reflected by wavelength conversion component.
It should be noted that first, the laser group 20 of the embodiment of the present invention issues the first polarization blue laser.Linear polarization
Light can be decomposed into the S polarized light for being parallel to plane and the present invention perpendicular to plane in the plane perpendicular to optical propagation direction
Embodiment is not specifically limited the polarization state of the first polarization blue laser, can be S polarized light, or P-polarized light.
Exemplary, the first polarization blue laser that laser group 20 issues is P-polarized light, and P polarization blue laser is saturating with polarization layer 21
It is identical to cross axis direction, i.e., rear incident wavelength transition components 23 are all penetrated by polarization layer 21, in the polarization of wavelength conversion component 23
State transition zone Y is converted to S-polarization blue laser back reflection, when again passing by polarization layer 21, after being reflected by polarization layer 21, through conjunction
Light unit 22 is emitted.
Second, the phosphor region X and polarization converted area Y for including for wavelength conversion component 23 are in wavelength conversion component 23
Shared ratio, without specifically limiting in the embodiment of the present invention.Division and laser light source mould group due to aforementioned proportion are emitted
Mixed white light three primary colours proportion and the parameter settings such as white balance it is related, those skilled in the art can be according to actual needs
It is chosen.
Third, in the laser light source mould group of the embodiment of the present invention, for light combination unit 22 specific structure with no restrictions, only
It wants the light that can make blue optical band to penetrate, reflect the light in addition to blue wave band, and have the function of light combination outgoing,
Such as dichroscope or X light combination mirror etc..
4th, the first polarization blue laser is known as the second polarization blue laser in polarization converted area Y switchable polarisation state, so
It is emitted after being reflected afterwards from reflection substrate 233 to the direction of light combination unit 22, it is anti-at polarization layer 21 after economic cooperation light unit 22 transmits
Be emitted back towards light combination unit 22, and be emitted after light combination unit 22 mixes light combination with red fluorescence and green fluorescence, can be obtained including
The laser light source of three primary colours.
In addition, those skilled in the art should know light direction described in the embodiment of the present invention refers to light at this
When being propagated in the laser light source mould group of inventive embodiments, along the direction of propagation (in the direction shown by the arrow in Figure 2) of light, light warp
The direction being emitted after certain component is crossed, likewise, entering the direction that light direction refers to certain incident component of light.Primary optical axis refer in this hair
Axis in the laser light source mould group of bright embodiment when light propagation where optical center.
A kind of laser light source mould group provided by the invention, by the polarization layer of setting, so that issued by laser group
One polarization blue laser all penetrates, and light combination unit has the work that can be penetrated the light of blue light wavelength and reflect other wavelength lights
With polarize blue laser through the first of polarization layer has light combination unit transmission, and incident wavelength transition components, wavelength convert group again
The phosphor region of part at least one of receives the first polarization blue laser and generates red fluorescence, green fluorescence and reflects, wavelength
The polarization converted area of transition components receives the first polarization blue laser and is converted to the second polarization blue laser back reflection, by wave
At least one of the red fluorescence of long transition components reflection, green fluorescence and the second polarization blue laser return to light combination list
Member, at least one of red fluorescence, green fluorescence reflect at light combination unit, and the second polarization blue laser penetrates light combination unit
It is again passed through the outgoing of light combination unit by polarization layer reflection, to form the laser light source for including three primary colours.This laser light source mould
Group is compact-sized, and light path element quantity reduces, and reduces optical path space, realizes the micromation of laser light source mould group.
Further, as shown in figure 3, wavelength conversion component 23 includes phosphor region X and polarization converted area Y, wavelength convert
Component 23, which is driven, to be rotated so that primary optical axis is alternately across phosphor region X and polarization converted area Y.As shown in figure 4, phosphor region X includes
Along colour filter 231, phosphor powder layer 232 and reflection substrate 233 that light direction is set gradually is entered, when the first polarization blue laser enters
Phosphor region X is penetrated, after the colour filter that the first polarization blue laser passes through colour filter 231, the fluorescent powder on excitated fluorescent powder layer 232 becomes
Fluorescence identical with fluorescent powder color, wherein exemplary, phosphor powder layer 232 includes the green phosphor layer for generating green fluorescence
And/or generate the Red phosphor layer or yellow fluorescence bisque of red fluorescence.Fluorescence by reflection substrate 233 reflection using
It is emitted after the colour filter of colour filter 231 to the direction of light combination unit 22.Polarization converted area Y includes that edge enters what light direction was set gradually
Polarization form converter 234 and reflection substrate 233, when first polarizes blue laser incoming polarization state transition zone Y, the first polarization is blue
Laser is emitted after the reflection of reflection substrate 233 to the direction of light combination unit 22 after being converted to the second polarization blue laser.
It should be noted that first, in the embodiment of the present invention, the material of reflection substrate 233 is not particularly limited, only
The plane of reflection with high reflectivity is wanted, more preferably, smooth aluminum substrate can be selected in reflection substrate 233.Smooth aluminium base
The perfect heat-dissipating of plate and to the reflectivity of light height, can be improved the light extraction efficiency of reflected light for making reflection substrate 233.
Second, colour filter 231 have can make simultaneously blue optical band (such as 440-470nm) and with fluorescent powder color phase
The function that same band of light penetrates.It is exemplary, include on phosphor powder layer 232 red fluorescence powder that in rotational direction sets gradually and
Green emitting phosphor, then the fluorescence after exciting is respectively red fluorescence and green fluorescence, at this point, setting is in corresponding red fluorescence powder position
The colour filter 231 at the place of setting can make the light of blue optical band (such as 440-470nm) and red optical band (such as 590-680nm) saturating
It crosses, likewise, the colour filter 231 being arranged at corresponding green emitting phosphor position can make blue optical band (such as 440-470nm)
It is penetrated with the light of green optical band (such as 500-580nm).
Further, as shown in figure 5, the laser light source mould group of the embodiment of the present invention further includes that setting goes out in laser group 20
The shaping lens group 24 of light direction, shaping lens group 24 includes look in the distance microscope group 241 and the diffusion sheet 242 set gradually, to sharp
The first polarization blue laser that light device group 20 is emitted carries out shrink beam.
As shown in figure 5, the light of the first polarization blue laser due to the outgoing of laser group 20 of 201 array of laser composition
Spot range is larger, and in order to reduce the overall dimensions of laser light source mould group, needing will be further incident after hot spot range shorter, because
This, is arranged shaping lens group 24 in 20 light direction of laser group.Shaping lens group 24 includes by a piece of convex lens and a piece of recessed
The microscope group 241 of looking in the distance of lens composition, for carrying out shrink beam to the biggish hot spot of range, the hot spot model after shaping lens group 24
Enclose diminution.The energy of spot center position after shrink beam is more concentrated and energy is higher, may cause optical element thereafter by
It is damaged to topical burn.Therefore, shaping lens group 24 further includes the diffusion sheet 242 that 241 light direction of microscope group of looking in the distance is arranged in, and is used
It is homogenized in the laser beam diffusion after shrink beam.So, it will be able to which the Energy distribution of the laser beam after making shrink beam is more
It is average, it avoids local energy excessively high and the topical burn of optical device is damaged.
Further, as shown in fig. 6, the laser light source mould group of the embodiment of the present invention further includes that setting goes out in light combination unit 22
The collimation lens set 25 of light direction, standard refer to that lens group 25 includes at least one plano-convex lens, and the convex surface of plano-convex lens is incidence surface.
Light by plano-convex lens plane directive convex surface when, plano-convex lens can carry out collimation adjustment to light, that is, dissipate
Light it is incident, parallel light emergence is opposite, light by plano-convex lens convex surface directive plane when, plano-convex lens play converged light
The effect of line, i.e. the hot spot range of emergent ray are less than the hot spot range of incident ray.Based on this, the collimation of the embodiment of the present invention
Lens group 25 includes at least one plano-convex lens, as shown in fig. 6, collimation lens set 25 includes focus two on primary optical axis flat
(radiation direction by collimation lens set 25 is not shown) in convex lens in Fig. 6.For penetrating 22 directive wavelength convert of light combination unit
First polarization blue laser of component 23, due to being by the convex surface incidence of plano-convex lens, planar exit, collimation lens set 25 is to sharp
Light beam further focuses, to be further reduced the hot spot range of incident wavelength transition components 23, so that it is also possible that wavelength turns
The size for changing component 23 further decreases.And for being reflected through reflection substrate 233 second polarization blue laser and fluorescence, it can be close
Seemingly regard lambert's body as, dispersion angle is larger, after, convex surface outgoing incident by the plane of plano-convex lens in collimation lens set 25, by
In the collimating effect of collimation lens set 25, directional light or the outgoing of less parallel light can be shaped as.
It should be noted that the embodiment of the present invention of focal length and setting in to(for) the plano-convex lens in collimation lens set 25
Quantity is not specifically limited, and those skilled in the art can choose according to actual needs.
Preferably, as shown in fig. 7, light combination unit 22 includes dichroscope 221.Wherein, dichroscope 221 is in primary optical axis
45° angle setting.
As shown in fig. 7, light combination unit 22 includes dichroscope 221.Dichroscope 221 is also known as dichroic mirror, has to one
The long light of standing wave is completely through, the feature fully reflective to the light of other wavelength.And it is selected compared to equally can be realized wavelength
The X light combination mirror of function is selected, the structure of dichroscope 221 is simple, is conducive to the laser light source mould packet size to the embodiment of the present invention
Further decrease.Wherein, in order to avoid excessively to influence view clear for lines, dichroscope 221 and primary optical axis are not annotated in Fig. 7
Between included angle.
Further, as shown in fig. 7, light combination unit 22 further include be arranged in 221 light direction of dichroscope focusing it is saturating
Mirror 222, for converging the mixed light being emitted by dichroscope 221.
As shown in Figure 7, it is generally the case that condenser lens 222 is plano-convex lens, and the convex surface of plano-convex lens enters light, puts down
Face goes out light.The mixed light being emitted after 221 light combination of dichroscope is focused shrink beam by condenser lens 222, to reduce out
Optical range.
Further, as shown in figure 8, light combination unit 22 further includes the diffusion layer that 222 light direction of condenser lens is arranged in
223。
It, can not be to the side of transmitted light since condenser lens 222 is only acted on comprising the focusing shrink beam to transmitted light
It is adjusted to light energy distribution unevenness, as shown in fig. 7, the light emission direction for the mixed light that line focus lens 222 are emitted is not advised
It restrains and light energy distribution is uneven within the scope of its hot spot, therefore, as shown in figure 8, light combination unit 22 further includes in condenser lens
The diffusion layer 223 of 222 light direction setting.Diffusion layer 223 is used to that the mixed light of transmission to be spread and be homogenized.
It should be noted that the diffusion sheet 242 in the diffusion layer 223 being arranged in light combination unit 22 and shaping lens group 24
It acts on identical, can be identical structure.It is exemplary, frosted glass or binary devices can be selected, on this basis, in order to improve
The even light ability of the diffusion of diffusion sheet 242 and diffusion layer 223 can also process micro- knot on the surface of diffusion sheet 242 and diffusion layer 223
Structure, with reinforcing effect.In addition, diffusion sheet 242 can also be arranged in order to improve the diffusion effect of diffusion sheet 242 and diffusion layer 223
Even light is spread in the state of dynamic rotary with diffusion layer 223.
Further, as shown in figure 8, light combination unit 22 further includes the optical tunnel that 223 light direction of diffusion layer is arranged in
224。
As shown in figure 8, optical tunnel 224 is arranged in the light direction in diffusion layer 223, so that by the even light of diffusion layer 223
Mixed light after diffusion enters optical tunnel 224, and is finally emitted after further homogenizing inside optical tunnel 224.It is provided with even light
The laser light source mould group of stick 224 can be by the light exit side and laser equipment of optical tunnel 224 when being applied in laser equipment
In other component connection, with directly to laser equipment export laser light source, improve laser light source mould group light utilization efficiency.
Preferably, polarization form converter 234 is quarter wave plate.
Quarter wave plate (quarter-wave plate) is with certain thickness birefringent single-chip.When light normal direction enters
When penetrating and penetrating quarter wave plate, the phase difference between ordinary light (o light) and non-ordinary light (e light) is equal to pi/2 or the odd-multiple for pi/2.
Quarter wave plate is set as polarization form converter 234, enables to incident P-polarized light by quarter wave plate and through reflection substrate
After 233 reflections, S polarized light is changed into.Moreover, quarter wave plate structure is simple, small volume can as polarization form converter 234
Under the premise of realizing required polarization converted, minimize the laser light source mould group of the embodiment of the present invention.
Preferably, the laser 201 in laser group 20 is semiconductor laser.Semiconductor laser is with certain half
Conductor material works substance and generates the device of laser.By certain energisation mode, in the energy band (conduction band of semiconductor substance
With valence band) between or energy band and impurity (acceptor or donor) energy level of semiconductor substance between, realize nonequilibrium carrier
Population inversion just generates stimulated emission effect when a large amount of electronics and hole-recombination in population inversion state.Partly lead
Body laser is small in size, light-weight, the operation is stable and the laser that can issue blue wave band, the laser for the embodiment of the present invention
Laser group 20 in light source module group, is capable of providing higher luminous efficiency, and is conducive to the miniaturization of mould group.
Specifically, phosphor powder layer 232 includes in the phosphor region X green phosphor layer being disposed adjacent and yellow fluorescence bisque.
Alternatively, phosphor powder layer 232 includes in the phosphor region X green phosphor layer being disposed adjacent and Red phosphor layer.
Wherein, above-mentioned be disposed adjacent refers to being disposed adjacent in the range of phosphor region X as shown in Figure 3.It is exemplary,
When wavelength conversion component 23 is driven rotation, the basis for successively passing through primary optical axis of X and polarization converted area Y timing in phosphor region
On, green phosphor layer and yellow fluorescence bisque in the X of phosphor region equally successively pass through primary optical axis, so that blue laser is swashing
Green fluorescence is generated when fluoresced green bisque, generates yellow fluorescence when exciting yellow fluorescence bisque.
Further, as shown in figure 9, the laser light source mould group of the embodiment of the present invention further includes at least one red light source
202, red light source 202 is set side by side with laser group 20, and phosphor region X generates green fluorescence and reflects.
As shown in figure 9, when the laser light source mould group of the embodiment of the present invention further includes at least one red light source 202, by
The mixed light that laser group 20 and red light source 202 issue includes that red light and first polarize blue laser, at this time only need to be in wave
Green fluorescence is generated in long transition components 23 can light combination composition three primary colours mixed light.It is exemplary, the phosphor powder layer of phosphor region X
232 only need to be set as green phosphor layer, corresponding, the colour filter 231 being arranged on phosphor powder layer 232 need to be arranged to
While enough penetrating the light of blue optical band (such as 440-470nm) and/or red optical band (such as 590-680nm), it can make
The light of green optical band (such as 500-580nm) also penetrates.Light combination unit 22 is also configured as between blue wave band and red spectral band thoroughly
It penetrates, green light band reflection.
Optionally, red light source 202 can be red laser or red light source 202 can also be red-light LED.
When red light source 202 is red laser, red laser can be arranged in laser group 20, laser group
20 are used as two-color laser light source, laser and at least one sending red laser including at least one sending blue laser
Laser.It is the light source that provides of laser light source mould group of the embodiment of the present invention is LED+LD when red light source 202 is red-light LED
Light source issues the laser and at least one LED to glow of the first polarization blue laser including at least one.
Preferably, in order to further decrease the embodiment of the present invention laser light source mould group mould packet size, can also will be inclined
Vibration layer 21 is set up directly on the light-entering surface of dichroscope 221 in the form of plated film, to reduce polarization layer 21 and dichroic
Space between mirror 221.
Further, as shown in Figure 10, wavelength conversion component 23 further includes rotation axis 235 and connect with rotation axis 235
Motor 236, motor 236 drive wavelength conversion component 23 rotated centered on rotation axis 235.
So, as shown in Figure 10, during the work of the laser light source mould group of the embodiment of the present invention, pass through motor
236 driving wavelength conversion components 23 are rotated centered on rotation axis 235, for example, can be fixed for rotation axis 235, motor 236 drives
Dynamic wavelength conversion component 23 is rotated around rotation axis 235, or may be the fluorescence in rotation axis 235 and wavelength conversion component 23
It is fixedly connected between other component on area X and polarization converted area Y, motor 236 drives rotation axis 235 to rotate, so that whole
A wavelength conversion component 23 rotates.
The second aspect of the embodiment of the present invention provides a kind of laser projection device, including ray machine, camera lens, and as above
State the laser light source mould group of any one.
The laser projection device of the embodiment of the present invention provides laser source by laser light source mould group, by laser light source mould group
The laser source of outgoing carries out beam modulation by exporting to lens imaging in ray machine, and is projected to projection medium further to be formed
Projected picture.
The laser projection device of the embodiment of the present invention, can be effective by the laser light source mould group of setting miniaturization structure
The structure size of whole equipment is reduced, so that the laser projection device of the embodiment of the present invention realizes miniaturization, convenient for being applied to
More projection occasions, and be convenient for carrying.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (15)
1. a kind of laser light source mould group, which is characterized in that including laser group, and along the laser group light direction according to
Polarization layer, light combination unit and the wavelength conversion component of secondary setting；
The laser group issues the first polarization blue laser；
The wavelength conversion component includes phosphor region and polarization converted area；The phosphor region is received to be issued by the laser group
And by the first polarization blue laser of the polarization layer and the light combination unit, to generate red fluorescence and/or green fluorescence
And it reflects；The polarization converted area, which is received, to be issued by the laser group and by the polarization layer and the light combination unit
The first polarization blue laser is converted to the second polarization blue laser and reflected by the first polarization blue laser；
The light combination unit reflects the red fluorescence and/or the green fluorescence reflected by the wavelength conversion component；
The second polarization blue laser that the polarization layer reflection is reflected by the wavelength conversion component.
2. laser light source mould group according to claim 1, which is characterized in that the phosphor region includes that edge enters light direction successively
Colour filter, phosphor powder layer and the reflection substrate of setting, the polarization converted area include along enter light direction set gradually it is inclined
Polarization state converter and the reflection substrate, the wavelength conversion component, which is driven, to be rotated so that the primary optical axis of incident light is alternately across institute
State phosphor region and the polarization converted area.
3. laser light source mould group according to claim 1 or 2, which is characterized in that further include being arranged in the laser group
The shaping lens group of light direction, the shaping lens group include look in the distance microscope group and the diffusion sheet set gradually, to swash to described
The first polarization blue laser that light device group issues carries out shrink beam.
4. laser light source mould group according to claim 1 or 2, which is characterized in that further include being arranged in the light combination unit
The collimation lens set of light direction, the standard refer to that lens group includes at least one plano-convex lens, and the convex surface of the plano-convex lens is
Incidence surface.
5. laser light source mould group according to claim 1 or 2, which is characterized in that the light combination unit includes dichroscope；
Wherein, the dichroscope and the primary optical axis are arranged in 45° angle.
6. laser light source mould group according to claim 5, which is characterized in that the light combination unit further includes being arranged described
The condenser lens of dichroscope light direction, for converging the mixed light being emitted by the dichroscope.
7. laser light source mould group according to claim 6, which is characterized in that the light combination unit further includes being arranged described
The diffusion layer of condenser lens light direction.
8. laser light source mould group according to claim 7, which is characterized in that the light combination unit further includes being arranged described
The optical tunnel of diffusion layer light direction.
9. laser light source mould group according to claim 1 or 2, which is characterized in that the polarization form converter is 1/4 wave
Piece.
10. laser light source mould group according to claim 1 or 2, which is characterized in that the laser in the laser group is
Semiconductor laser.
11. laser light source mould group according to claim 2, which is characterized in that the phosphor powder layer is included in the fluorescence
The green phosphor layer and yellow fluorescence bisque that area is disposed adjacent；Alternatively, to be included in the phosphor region adjacent for the phosphor powder layer
The green phosphor layer and Red phosphor layer of setting.
12. laser light source mould group according to claim 1, which is characterized in that it further include at least one red light source, it is described
Red light source is set side by side with the laser group；
The phosphor region generates green fluorescence and reflects.
13. laser light source mould group according to claim 12, which is characterized in that the red light source is red laser,
Alternatively, the red light source is red-light LED.
14. laser light source mould group according to claim 2, which is characterized in that the wavelength conversion component further includes rotation
Axis and motor with the rotation axis connection, the motor drive the wavelength conversion component to revolve centered on the rotation axis
Turn.
15. a kind of laser projection device, which is characterized in that including ray machine, camera lens, and as described in claim any one of 1-14
Laser light source mould group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710933467.5A CN109656084A (en) | 2017-10-10 | 2017-10-10 | A kind of laser light source mould group and laser projection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710933467.5A CN109656084A (en) | 2017-10-10 | 2017-10-10 | A kind of laser light source mould group and laser projection device |
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| CN109656084A true CN109656084A (en) | 2019-04-19 |
Family
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|---|---|---|---|
| CN201710933467.5A Pending CN109656084A (en) | 2017-10-10 | 2017-10-10 | A kind of laser light source mould group and laser projection device |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Applicant after: Hisense Video Technology Co., Ltd Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant before: HISENSE ELECTRIC Co.,Ltd. |
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