CN106226985B - A kind of laser light source and laser projection device - Google Patents
A kind of laser light source and laser projection device Download PDFInfo
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- CN106226985B CN106226985B CN201610875228.4A CN201610875228A CN106226985B CN 106226985 B CN106226985 B CN 106226985B CN 201610875228 A CN201610875228 A CN 201610875228A CN 106226985 B CN106226985 B CN 106226985B
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- laser
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- collecting device
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Laser light source provided in an embodiment of the present invention and laser projection device include: the laser for issuing at least one color, include: the condenser lens assembled for the laser at least one color in the optical path of laser；Light collecting device comprising lens section, the lens section are used for through laser to colour wheel, and the reflecting surface of light collecting device reflects the light beam that colour wheel reflects into even smooth component；Colour wheel, including reflection-type substrate, above at least provided with fluorescence portion, the reflecting surface of laser reflection for penetrating light collecting device to light collecting device；Even smooth component receives the light beam of the reflective surface of light collecting device, and carries out even light to the light beam received.It can be seen that, condenser lens and lens section composition take the photograph remote type microscope group, the parallel or approximately parallel light beam of laser sending can be received, and light beam is assembled, shorten the optical path length needed for light beam is assembled, so that the hypotelorism between optical component in framework, keeps light source framework more compact while guaranteeing light-source brightness.
Description
Technical field
The present invention relates to laser display field more particularly to a kind of laser light source and laser projection devices.
Background technique
Laser is a kind of high brightness, high directivity, the light source for issuing monochromatic coherent light beam, and laser light source is as a kind of excellent
Coherent source, have monochromaticjty good, the advantages that high directivity, luminous flux is high, in recent years gradually as light source applications in projection
Field of display technology.
When laser issues laser, laser is arranged with certain space interval, especially when multiple lasers arrange,
The total spot size that will cause laser emitting is larger, therefore needs biggish light hole to receive completely in the rear end of laser
Hot spot, this just needs to improve the ability that laser enters unthreaded hole by increasing the distance between laser and light hole, and usually
It is needed in the optical path using condenser lens focused light spot.As shown in Figure 1, schematical as beam shaping using condenser lens 501
Component, which assemble to hot spot, reduces spot size.It the position of condenser lens 501 can be in the position shown in the figure 11 and position 2.
Wherein, light hole is located at arch center shown in reflector 601.It is closer when condenser lens 501 is located at position 1
Light hole, but the size for being their ability to received hot spot cannot be larger, otherwise according to the convergence ability of condenser lens, so that reaching
The hot spot of light hole is larger, be easy to cause marginal portion light beam that can not cause light loss by light hole, therefore consider to protect
Demonstrate,prove condenser lens 501 receipts optical port diameter, that is, receive large area hot spot, and make light beam reach light hole when spot size compared with
It is small, condenser lens 501 is usually set to position 2 in the optical path, but this causes required optical distance longer again.
Therefore, research provides a kind of compact in architecture, and the lower optics framework of light loss is urgently to be resolved at present asks
Topic.
Summary of the invention
The present invention provides a kind of laser light source and laser projection device, to solve laser light source existing in the prior art
Framework is not compact, the higher problem of light loss.
Laser light source provided in an embodiment of the present invention, comprising: the laser of at least one color issues at least one color
Laser, include: in the transmission optical path of the laser
Condenser lens is assembled for the laser at least one color；
Light collecting device, the light collecting device include lens section and concave reflection face, and the lens section is concavees lens structure, institute
State lens section for through laser sending laser to colour wheel, the reflecting surface of the light collecting device reflects the colour wheel
Light beam reflect into even smooth component；
The colour wheel, including reflection-type substrate, at least provided with fluorescence portion on the reflection-type substrate, for by the collection
Reflecting surface of the laser reflection that electro-optical device penetrates to the light collecting device；
The even smooth component, the light beam of the reflective surface for receiving the light collecting device, and to the light beam received
Carry out even light.
Optionally, the lens section is in the face type of light collecting device reflecting surface side and the reflecting surface of the light collecting device
Face type is consistent.
Optionally, the lens section be in hole that the insertion light collecting device opens up in advance or the lens section with it is described
The concave reflection face of light collecting device is wholely set.
Optionally, the lens section is coated with dichroic film on the surface of light collecting device concave reflection face side,
The dichroic film be used for issue the laser of the first color the first color laser light, make the fluorescence portion of the colour wheel by
Swash the fluorescent reflection generated.
Optionally, the reflection-type substrate further includes diffusing reflection portion, what the diffusing reflection portion was used to penetrate light collecting device
Laser diffusion is to the concave reflection face of the light collecting device.
Optionally, the fluorescence portion includes:
Second color fluorescence portion, the second color laser diffusion for penetrating the light collecting device are filled to the light harvesting
The reflecting surface set, the laser excitation penetrated by the light collecting device generate the fluorescence of the second color；
Third color fluorescence portion, the third color laser diffusion for penetrating the light collecting device are filled to the light harvesting
The reflecting surface set, the laser excitation penetrated by the light collecting device generate the fluorescence of third color.
Optionally, first color is blue, and second color is green, and the third color is red.
Optionally, the light collecting device is spherical reflecting bowl or oval reflector.
Laser light source provided in an embodiment of the present invention, comprising: the laser of at least one color issues at least one color
Laser, include: in the transmission optical path of the laser
Light collecting device, the light collecting device include lens section and concave reflection face, and the lens section is concavees lens structure, institute
State lens section for through laser sending laser to colour wheel, the concave reflection face of the light collecting device is by the colour wheel
The light beam of reflection is reflected into even smooth component；
Colour wheel, including substrate, at least provided with fluorescence portion, the laser for being penetrated by the light collecting device swashs the substrate
Hair generates fluorescence, and the fluorescence portion of the colour wheel is excited the fluorescent reflection generated described in by the concave reflection face of the light collecting device
Even smooth component；
Even smooth component, the light beam of the reflective surface for receiving the light collecting device, and the light beam received is carried out
Even light；
Wherein, the laser is on the light collecting device, the light collecting device, each position corresponding to laser light incident
It installs and is equipped with lens section, the lens section is embedded in the hole that the light collecting device opens up in advance；Alternatively,
The laser is around the light collecting device, the lens section of the light collecting device generally concavees lens structure.
Optionally, the lens section is anti-in the face type of light collecting device reflecting surface side and the concave surface of the light collecting device
It is consistent to penetrate face face type.
Optionally, the lens section is coated with dichroic film on the surface of light collecting device concave reflection face side,
The dichroic film be used for issue the laser of the first color the first color laser light, make the fluorescence portion of the colour wheel by
Swash the fluorescent reflection generated.
Optionally, the reflection-type substrate further includes diffusing reflection portion, what the diffusing reflection portion was used to penetrate light collecting device
Laser diffusion is to the concave reflection face of the light collecting device.
Optionally, the fluorescence portion includes:
Second color fluorescence portion, the second color laser diffusion for penetrating the light collecting device are filled to the light harvesting
The reflecting surface set, the laser excitation penetrated by the light collecting device generate the fluorescence of the second color；
Third color fluorescence portion, the third color laser diffusion for penetrating the light collecting device are filled to the light harvesting
The reflecting surface set, the laser excitation penetrated by the light collecting device generate the fluorescence of third color.
Optionally, first color is blue, and second color is green, and the third color is red.
Optionally the light collecting device is spherical reflecting bowl or oval reflector.
Laser projection device provided in an embodiment of the present invention, including ray machine, camera lens and above-mentioned laser light source；
The laser light source provides illumination for the ray machine, and the ray machine is modulated light beam of light source, and exports extremely
The camera lens is imaged, and is projected to projection medium and is formed projected picture.
Laser light source provided in an embodiment of the present invention and laser projection device include: to issue swashing at least one color laser
Light device includes: that the focusing assembled for the laser at least one color is saturating in the transmission optical path of the laser
Mirror；Light collecting device, including lens section and concave reflection face, lens section are concavees lens structure, and lens section is used to penetrate the laser
For the laser that device issues to colour wheel, the reflecting surface of light collecting device reflects the light beam that colour wheel reflects into even smooth component；Colour wheel, including it is anti-
Emitting substrate, at least provided with fluorescence portion on the reflection-type substrate, the laser reflection for penetrating the light collecting device is arrived
The reflecting surface of the light collecting device；Even smooth component, the light beam of the reflective surface for receiving the light collecting device, and to reception
The light beam arrived carries out even light.Due to being arranged in laser light source provided in an embodiment of the present invention on condenser lens and light collecting device
Concavees lens lens section composition takes the photograph remote type microscope group, can receive the parallel or approximately parallel light beam issued from laser, and will
Light beam is assembled, therefore is not needed to elongate the distance between condenser lens and light collecting device and can be reached identical convergences and imitate
Fruit assembles required optical path length so as to shorten light beam, so that between the optical component in light source framework in light source framework
Hypotelorism keeps the structure of laser source system more compact while guaranteeing light-source brightness.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the position view between condenser lens and reflector in the prior art；
Fig. 2 is the optics configuration diagram of monochromatic laser light source provided in an embodiment of the present invention；
Fig. 3 is the optics configuration diagram of the projection device of monochromatic laser light source provided in an embodiment of the present invention；
Fig. 4 A is the reflector of projection device of monochromatic laser light source provided in an embodiment of the present invention and saturating on reflector
The structural schematic diagram in mirror portion；
Fig. 4 B is the plan structure of reflector shown in Fig. 4 A provided in an embodiment of the present invention and the lens section on reflector
Schematic diagram；
Fig. 5 is the structural schematic diagram of the colour wheel of the projection device of monochromatic laser light source provided in an embodiment of the present invention；
Fig. 6 is that the reflector of the projection device of monochromatic laser light source provided in an embodiment of the present invention is showing for spherical reflector
It is intended to；
Fig. 7 is the structural schematic diagram of the even smooth component of the projection device of monochromatic laser light source provided in an embodiment of the present invention；
Fig. 8 is the optics configuration diagram for multiple monochromatic laser light sources that other embodiment of the present invention provides；
Fig. 9 is another optics configuration diagram for multiple monochromatic laser light sources that other embodiment of the present invention provides；
Figure 10 is laser projection device structural schematic diagram provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
As stated in the background art, light beam generates interference in space, will appear light and dark spot when presenting on the screen
Point, these spots are in flashing state in human eye, and viewing is also easy to produce dizziness sense of discomfort for a long time, more causes perspective view image quality
The deterioration of amount reduces the viewing experience of user.On the other hand, the distance between condenser lens and reflector will cause entire laser
The structure of light-source system is not compact.
It is mentioned above to solve the problems, such as the embodiment of the invention provides a kind of laser light source with light collecting device.
The embodiment of the present invention is suitable for the projection device of monochromatic laser light source or Multi Colour Lasers light source.Swashed below with monochrome
For radiant, the embodiment of the present invention is described in detail.
In the optical path of laser transmission, often there is more optical mirror slip, generally may include having such as: convex lens,
Concave and convex lenses, dichroscope, the optical mirror slips such as collimation lens.It is transmitted in each eyeglass of the light beam that laser issues in the optical path,
It is transmitted or reflected, carries out optical treatment.
It referring to fig. 2, is a kind of optics configuration diagram of laser light source provided in an embodiment of the present invention.
As shown in Fig. 2, including: semiconductor laser 101B, collimation lens 201B, monochrome in the optics framework of laser light source
Multiplexing apparatus 301B, light combination mirror 401B, focus lamp 501, reflector 601, colour wheel 701, even smooth component 801.
In above-mentioned optics framework, transmission path of the laser in entire laser light source is as described below:
Semiconductor laser 101B is for issuing blue laser, wherein semiconductor laser 101B can be one or more
A laser (quantity of the laser for each color exemplarily only shown in figure is 4), multiple lasers can be improved entirely
Picture it is bright.
It include collimation lens 201B, collimation lens in the transmission path for the blue laser that semiconductor laser 101B is issued
The laser beam with certain dispersion angle that semiconductor laser 101B can be emitted by 201B is collimated and is emitted to list
Color Multiplexing apparatus 301B.Wherein, optimal light processing efficiency in order to obtain, settable laser 101B and corresponding collimation lens
Between position so that the laser light incident that laser 101B is issued is to the center of corresponding collimation lens.
Monochromatic Multiplexing apparatus 301B carries out compression back reflection to the blue laser beams being emitted from corresponding collimation lens and enters
Light combination mirror 401B.
Light combination mirror 401B to from monochromatic Multiplexing apparatus 301B reflect into laser beam reflect, reflex to condenser lens
501。
Condenser lens 501 converges the light beam being emitted from light combination mirror 401B, and the light beam of convergence is transmitted, into
Enter the light hole of reflector 601.The light hole of reflector can correspond to the center setting of condenser lens.
The light beam penetrated from the light hole of reflector 601 is got on colour wheel 701.Colour wheel 701 is to the light hole from reflector
Incident light beam is reflected, and the reflecting surface of reflector is reflexed to, which again reflects the light beam reflected back from colour wheel
To the light inlet of even smooth component 801, even light is carried out to it by even smooth component 801.
If as can be seen that multiple semiconductor laser 101B arrangement, meeting from the optics framework of laser light source shown in Fig. 2
Cause total spot size of laser emitting larger, thus the rear end of semiconductor laser 101B need biggish light hole with
Complete light spot received, this just needs to improve the energy that laser enters unthreaded hole by increasing the distance between laser and light hole
Power, and usually need in the optical path using condenser lens focused light spot, then the bore of condenser lens 501 needs bigger, to penetrate
When passing through the light hole of reflector 601 from the light beam of the laser beam of light combination mirror 404B reflection, therefore transmission condenser lens, this is logical
The bore of unthreaded hole is also required to more greatly, but the size of light hole is conditional.Therefore to make the light beam being emitted from condenser lens most
In the light hole into reflector of limits, it can only be reached by increasing condenser lens to the distance of reflector.
For the optics framework of laser light source shown in Fig. 2, further, the embodiment of the invention provides shown in Fig. 3
The optics configuration diagram of the projection device of laser light source.
As shown in figure 3, including: semiconductor laser 101B in the optics framework of the projection device of laser light source, collimating thoroughly
It is mirror 201B, monochromatic Multiplexing apparatus 301B, light combination mirror 401B, focus lamp 501, reflector 601, lens section 6012, colour wheel 701, even
Light component 801, using upper-part as the component in laser light source, in addition, may also include digital micromirror elements in projection device
(Digital Micromirror Device, abbreviation DMD) chip 901, projection lens 1001 and projection screen 1101.
In above-mentioned optics framework, transmission path of the laser in the projection device of entire three colors laser light source is as described below.
Semiconductor laser 101B is for issuing blue laser, wherein semiconductor laser 101B can be one or more
A laser (quantity of the laser for each color exemplarily only shown in figure is 4), multiple lasers can be improved entirely
Picture it is bright.
It include collimation lens 201B, collimation lens in the transmission path for the blue laser that semiconductor laser 101B is issued
The laser beam with certain dispersion angle that semiconductor laser 101B can be emitted by 201B is collimated and is emitted to list
Color Multiplexing apparatus 301B.Wherein, optimal light processing efficiency in order to obtain, settable laser 101B and corresponding collimation lens
Between position so that the laser light incident that laser 101B is issued is to the center of corresponding collimation lens.
Monochromatic Multiplexing apparatus 301B carries out compression back reflection to the blue laser beams being emitted from corresponding collimation lens and enters
Light combination mirror 401B.
Light combination mirror 401B to from monochromatic Multiplexing apparatus 301B reflect into laser beam reflect, reflex to condenser lens
501。
Condenser lens 501 converges the light beam being emitted from light combination mirror 401B, and the light beam of convergence is transmitted, into
Enter the lens section 6012 on reflector 601.The upper lens section 6012 of reflector can correspond to the center setting of condenser lens.
The light beam penetrated from the lens section 6012 on reflector 601 is got on colour wheel 701.From the direction of light beam incidence
It sees, the structure of the lens section 6012 is concavees lens, and the concavees lens and the structure that the composition of condenser lens 501 takes the photograph remote type lens set are specific
As shown in Figure 4 A；The structure of colour wheel 701 is specific as shown in figure 5, the colour wheel 701 includes red fluorescence portion 701a, green fluorescence
Portion 701b, diffusing reflection portion 701c and colour wheel fixation kit 701d, colour wheel 701 do not cover the light inlet of even smooth component 801,
In, the fluorescent powder of other color can also be coated on fluorescence portion 701a and fluorescence portion 701b, it specifically can be according to the need used
It was determined that the embodiment of the present invention is without limitation, and the substrate where red fluorescence portion 701a and green fluorescence portion 701b
Position on be provided with reflecting part, the reflecting part can be excited generate fluorescence reflect, colour wheel 701 be driven signal drive
Dynamic rotation.From the laser that semiconductor laser 101B is issued after the lens section 6012 of reflector 601 transmission, with colour wheel 701
Rotation be incident on red fluorescence portion 701a, the green fluorescence portion 701b and diffusing reflection portion 701c of colour wheel 701.If semiconductor swashs
It is incident on diffusing reflection portion 701c after the laser light lens section 6012 that light device 101B is issued, then forms light on diffusing reflection portion 701c
In diffusing reflection diffusing reflection occurs for spot, the hot spot, and hot spot is reflected to all directions；If the laser that semiconductor laser 101B is issued is saturating
It is incident on fluorescence portion 701a and fluorescence portion 701b after crossing lens section 6012, then the LASER Excited Fluorescence portion 701a and fluorescence portion
Fluorescent powder on 701b issues fluorescence, which reflexes to the reflecting surface of reflector, by the reflection of the reflector
The light inlet into even smooth component 801 is reflected in face.
Light beam enters even smooth component 801, and even smooth component 801 is mapped on dmd chip 901 after carrying out even light to the light beam.DMD
The lighting system (being not shown) of chip front end guides light beam to the surface DMD, and DMD is by thousands of small reflector group
At these small reflectors reflect light beam to be imaged into projection lens 1001, and is projected to projection screen 1101, forms perspective view
Picture.
A referring to fig. 4 takes the photograph remote type eyeglass for the lens section of condenser lens provided in an embodiment of the present invention and reflector composition
Group.Specifically as can be seen from Figure 4A, which is concavees lens, and the condenser lens formation of the concavees lens and front end is taken the photograph remote
Type lens set, this take the photograph remote type microscope group can receive from laser issue parallel or approximately parallel light beam, and by light beam into
Line convergence, thus do not need elongate the distance between condenser lens and light collecting device can reach identical convergent effect, from
And the optical path length needed for light beam is assembled is shortened, so that the spacing contracting between optical component in light source framework in light source framework
It is short, keep the structure of laser source system more compact while guaranteeing light-source brightness.It wherein takes the photograph remote type lens set and refers to mirror
Piece group interarea is in eyeglass front end, wherein between the interarea dotted line and solid line shown in the figure, the light that interarea is located at lens section enters
Penetrate face.
Between the distance between condenser lens and reflector shown in Fig. 4 A and condenser lens shown in FIG. 1 and reflector
The schematic diagram of distance is compared, and in schematic diagram shown in FIG. 1, need to elongate the distance between condenser lens and reflector makes to reach
Light beam preferably passes through the effect of the light hole of reflector, and in the schematic diagram of Fig. 4 A, by the light hole of reflector shown in FIG. 1
The position at place replaces with the lens section of concavees lens structure, does not need to elongate the distance between condenser lens and reflector, into one
Step ground, it can be seen that structure provided in an embodiment of the present invention is that the diameter of the lens section of concavees lens is greater than light passing under equal conditions
The aperture in hole, therefore the light beam that the optical beam ratio light hole of lens section provided in an embodiment of the present invention transmission penetrates is more.
Based on the above, the distance between condenser lens and reflector needed for schematic diagram shown in Fig. 4 A are small, favorably
In the compactedness for improving laser light source whole system structure, the damage for the laser not penetrated from light hole can also be reduced, is improved
Light-source brightness.
Wherein, lens section shown in Fig. 4 A can be in the insertion preset hole of reflector or lens section or reflective
Bowl can be integrated.
B referring to fig. 4 is the top view of reflector shown in Fig. 4 A.It can be seen that reflector from the top view to be broadly divided into
A, two regions B, the area A are the partial region that lens section is not provided on reflector, and the area B is the mirror of the lens section of concavees lens structure
Panel region can be located at reflector center, can also be with slightly biased reflector center, and the lens area shown in the area B is located at reflector
It is coated with dichroic film on the face of reflecting surface side, which is used for the laser issued through semiconductor laser, reflection warp
Cross the light that colour wheel reflects back.
It is the structural schematic diagram of colour wheel provided in an embodiment of the present invention referring to Fig. 5.
Colour wheel 701 shown in fig. 5 is circular diffusion wheel, and diffuse wheel is provided centrally with fixation kit, and the colour wheel is with this
Fixation kit is rotary shaft rotation, and the outer layer annulus of fixation kit is divided into red fluorescence portion 701a, green fluorescence portion 701b, overflows instead
Portion 701c is penetrated, red fluorescence portion and green fluorescence portion can be red by plating on the substrate where the fluorescence portion of the diffusion wheel
Fluorescent powder and green emitting phosphor obtain, and reflecting part is provided on the position of the substrate, and diffusing reflection portion 701c can be by this
It diffuses and coats diffuse-reflective material (such as barium sulfate, sodium metasilicate or barium sulfate and sodium metasilicate on the substrate at the diffusing reflection portion place of wheel
The high diffuse-reflective material such as mixture or polytetrafluoroethylene (PTFE) or Avian-D) it obtains, substrate can be diffusing transmission glass or expansion
Discrete piece.Optionally, fixation kit can be rotary shaft, and under its drive, diffusion wheel can be rotated using it as axis, in this way in difference
Moment is incident on the different location that the hot spot formed on reflecting part can be located on reflecting part, and then irreflexive direction phase not to the utmost
Together, so that the effect of dissipation spot is more preferable, the laser light incident issued from semiconductor laser is glimmering to red fluorescence portion and green
Excite the effect of fluorescence also more preferable in light portion.
Wherein, the reflecting part of colour wheel described in Fig. 5 can be mirror-reflection portion, or diffusing reflection portion.
It further, can be by the reflection of colour wheel shown in fig. 5 if laser shown in Fig. 3 uses mono-colour laser
Portion 701c replaces with the fluorescence portion 701c for being coated with fluorescent powder.In this way, the laser that semiconductor laser issues reaches the colour wheel of rotation
On 701, fluorescence portion 701a, 701b, 701c can be excited to generate the fluorescence of three kinds of colors, the laser of three kinds of colors is reflected into instead
The reflecting surface of light bowl, then by the reflective surface to even smooth component, at this point, there are three types of the light of different colours in even smooth component.
In certain other embodiment of the present invention, laser shown in Fig. 3 can also use multicolour laser, for example use
When tri-color laser, what colour wheel 701 shown in fig. 5 can be whole replaces with reflecting part, and what such semiconductor laser issued swashs
After light reaches colour wheel 701, the reflecting surface of reflector is reflexed to by colour wheel, then by the reflective surface to even smooth component, at this time
There are three types of the laser of color in even smooth component, reach and same effect recited above.
Laser shown in Fig. 2 and 3 is semiconductor laser, naturally it is also possible to (such as solid using other types laser
Determine laser or gas laser etc.), the embodiment of the present invention does not do specific limitation to this.
Fig. 2 or monochromatic laser light source shown in Fig. 3 are blue-light source, naturally it is also possible to the laser light source of other colors,
The quantity of laser color can also be more, and the embodiment of the present invention does not do specific limitation to this yet.
Based on the above, it can be seen that in laser light source provided in an embodiment of the present invention, condenser lens and light collecting device
The concavees lens lens section composition of upper setting takes the photograph remote type microscope group, can receive the parallel or approximately parallel light issued from laser
Beam, and light beam is assembled, therefore do not need to elongate the distance between condenser lens and light collecting device and can reach identical
Convergent effect, so as to shorten light beam assemble needed for optical path length so that the optical section in light source framework in light source framework
Hypotelorism between part keeps the structure of laser source system more compact while guaranteeing light-source brightness.
Further, realize that the principle progress dissipated is detailed to hot spot to the embodiment of the present invention below with reference to Fig. 3 and Fig. 5
Description.
The laser issued from semiconductor laser excitated fluorescent powder on the fluorescence portion 701a and fluorescence portion 701b of colour wheel 701
The fluorescence of corresponding color is generated, which will increase the average brightness of picture.
Pass through speckle strength formula: C=I/I', C represent speckle contrast, and I represents speckle brightness, and I' representative picture is average
Brightness.
It is found that being excited the average brightness increase that the fluorescence generated increases picture, and fluorescence part provides no speckle
Brightness, therefore the decline of overall speckle contrast, the case where reducing picture speckle.In addition, can be seen that in conjunction with Fig. 3 and Fig. 5 from anti-
The laser that the lens section of light bowl penetrates forms hot spot on the reflecting part 701b of colour wheel 701, and hot spot is sent out on the reflecting part of colour wheel
Raw diffusing reflection, hot spot are reflected to all directions, increase light beam diffusing reflection angle to reduce beam angle coherence, therefore dissipate
Spot phenomenon can also be desalinated, be weakened.
Fig. 2 or reflector shown in Fig. 3 601 can be spherical reflector or elliptical reflector.If reflector 601 is ellipse
Circular irror, then laser beam is incident on the first position in diffusing reflection portion through the lens section 6012 of reflector 601, by unrestrained anti-
The portion of penetrating reflexes to the mirror surface of elliptical reflector, and the light inlet of even smooth component is reflexed to using elliptical reflector, wherein described
One position and the light inlet position of the even smooth component are located at elliptical two focuses.
If reflector 601 is spherical reflector, the diameter of the spherical surface is greater than given threshold, to guarantee to be incident on unrestrained colour wheel
Diffusing reflection portion position and even smooth component light inlet between position have certain interval.As shown in fig. 6, working as spherical reflector
Radius is larger, in the plane where colour wheel light incident surface, can there is two focal position A, the position B being closer.Laser
Light beam is incident on the position A of unrestrained colour wheel through spherical reflector, and the diffusing reflection portion by overflowing colour wheel reflexes to spherical reflector
Mirror surface, the light inlet of even smooth component is reflexed to using spherical reflector, which is located at position B.Spherical reflector radius
Bigger, then the interval between position A and position B is bigger.
Fig. 2 or shown in Fig. 3 801 is wedge-shaped optical wand, and wedge-shaped optical wand is also possible to the even smooth component with optical collector.Such as Fig. 7
It is the even smooth block diagram with optical collector.
It is the even smooth component with optical collector, the light inlet of even smooth component and the area ratio of light-emitting window are less than 1, figure referring to Fig. 7
In round end have convergence effect.This even smooth component with optical collector utilizes etendue conservation principle, light-emitting window and enters light
Mouth is of different sizes, so that the light shooting angle of the biggish light-emitting window of area is smaller, in this way when incident light is such as 80 ° of wide-angle light beam
Or at 90 °, from light-emitting window go out after light beam be exactly low-angle, such as 30 ° or 40 °.
In addition, round end is on the basis of having wedge-shaped optical wand, additionally it is possible to there is parabolic reflector using itself rounded portions
The advantage in face can carry out internal reflection to the light beam of large angle incidence.
Further, semiconductor laser can be done around reflector around design, specific shown in Figure 7.
Referring to Fig. 8, done around reflector around design for the semiconductor laser that other embodiment of the present invention provides
Laser light source configuration diagram.
As shown in figure 8, including: semiconductor laser 101B in the optics framework of laser light source, collimation lens 201B, reflective
Bowl 301, reflecting optics group 401, colour wheel 501, even smooth component 601, wherein each collimation lens is in the position of corresponding reflector
On be provided with the lens section in concavees lens region.
In the optics framework of laser light source shown in Fig. 8, transmission path of the laser in entire laser light source framework is as follows
It is described:
Semiconductor laser 101B does circumferential arrangement around reflector 301, and semiconductor laser 101B is for issuing indigo plant
Color laser, the blue laser pass through the corresponding collimation lens 201 of semiconductor laser 101B, and collimation lens 201B will can partly be led
The laser beam with certain dispersion angle of body laser 101B outgoing is collimated and is emitted to reflector 301, is being collimated
There is a lens section of concavees lens structure in the position of the corresponding reflector of lens accordingly, on the face 301A of the reflector 301, is being arranged
It is coated with dichroic film on the position for having the lens section of concavees lens structure, what which was used to issue through semiconductor laser
Laser and reflected fluorescent light.Wherein, optimal light processing efficiency, settable laser 101B are collimated with corresponding in order to obtain
Position between lens, so that the laser light incident that laser 101B is issued is to the center of corresponding collimation lens, it is correspondingly, settable
Position between collimation lens 201B and corresponding lens section, so that the laser light incident of collimation lens 201B outgoing is to respective lens
The center in portion.
The light beam being emitted from collimation lens 201B focuses on fluorescent wheel 501, fluorescence by the lens component on reflector 301
The structure of wheel 501 is specific similar as shown in Figure 4 above, but reflecting part shown in Fig. 4 is replaced with transmissive portions, colour wheel 501
The light inlet of even smooth component 601 is not covered.Fluorescent wheel 501 is driven signal driving rotation, if be emitted from collimation lens 201B
Blue laser beams get to the transmissive portions of the fluorescent wheel 501 of rotation, then the light beam penetrates；If the indigo plant being emitted from collimation lens 201B
Color laser beam gets to the fluorescence portion of the fluorescent wheel 501 of rotation, then issues fluorescence, the fluorescence portion in the fluorescence portion excitated fluorescent powder
It is provided with reflecting part on the position of the substrate at place, which can reflect the fluorescence for being excited to generate, and will be excited to produce
Raw fluorescent reflection to reflector reflecting surface.
The blue laser penetrated from the transmissive portions of colour wheel 501, it is anti-by this into the first reflecting optics of reflecting optics group
Enter even smooth component 601 after penetrating the reflection of eyeglass, is excited the fluorescence generated by reflector reflecting surface in the fluorescence portion of colour wheel 501
Reflection after enter reflecting optics group 401 the second lens, by the lens transmission after enter even smooth component 601.
It is done around reflector around design as shown in figure 9, providing other semiconductor laser for the embodiment of the present invention
Laser light source configuration diagram.
As shown in figure 9, including: semiconductor laser 101B in the optics framework of laser light source, collimation lens 201B, reflective
Bowl 301, reflecting optics group 401, colour wheel 501, even smooth component 801, wherein the lens section of reflector generally concavees lens structure.
In the optics framework of laser light source shown in Fig. 9, transmission path of the laser in entire laser light source framework is as follows
It is described:
Semiconductor laser 101B is arranged around reflector 301, which, should for issuing blue laser
Blue laser passes through the corresponding collimation lens 201 of semiconductor laser 101B, and collimation lens 201B can be by semiconductor laser
The laser beam with certain dispersion angle of 101B outgoing is collimated and is emitted to reflector 301, wherein reflector is whole
For the lens section of concavees lens structure.It is coated with dichroic film on the face 301A of the 301 of the reflector, for penetrating semiconductor laser
The laser of sending, reflected fluorescent light.Wherein, optimal light processing efficiency in order to obtain, settable laser 101B with it is corresponding quasi-
Position between straight lens, so that the laser light incident that issues of laser 101B is to the center of corresponding collimation lens.
The light beam being emitted from collimation lens 201B focuses on fluorescent wheel 501, the structure of fluorescent wheel 501 by reflector 301
It is specific similar as shown in Figure 4 above, but reflecting part shown in Fig. 4 is replaced with into transmissive portions, colour wheel 501 does not cover even light portion
The light inlet of part 601.Fluorescent wheel 501 is driven signal driving rotation, if the blue laser beams being emitted from collimation lens 201B
Getting to the transmissive portions of the fluorescent wheel 501 of rotation, then the light beam penetrates；If the blue laser beams being emitted from collimation lens 201B are beaten
When to the fluorescence portion of the fluorescent wheel 501 of rotation, fluorescence is issued in the fluorescence portion excitated fluorescent powder, the substrate where the fluorescence portion
Reflecting part is provided on position, which can reflect the fluorescence for being excited to generate, and will be excited the fluorescent reflection generated
To the reflecting surface of reflector.
The blue laser penetrated from the transmissive portions of colour wheel 501, it is anti-by this into the first reflecting optics of reflecting optics group
Enter even smooth component 601 after penetrating the reflection of eyeglass, is excited the fluorescence generated by reflector reflecting surface in the fluorescence portion of colour wheel 501
Reflection after enter reflecting optics group 401 the second lens, by the lens transmission after enter even smooth component 601.
When semiconductor laser is arranged as shown in Fig. 8 or Fig. 9, do not need that other are arranged between collimation lens and reflector
Optical device, reduce damage when laser transmits in optical mirror slip in this way, be conducive to improve light-source brightness.
Based on the same technical idea, the embodiment of the present invention also provides a kind of laser projection device, the laser projection device
May include laser light source provided by the above embodiment of the present invention, the laser projection device specifically can be laser movie theatre or
Laser television or other laser projection instruments etc..
Figure 10 shows laser projection device schematic diagram provided in an embodiment of the present invention.
As shown in Figure 10, the laser projection device includes: laser light source 501, ray machine 502, camera lens 503, projection medium
505。
Wherein, laser light source 501 is laser light source provided by the above embodiment of the present invention, and for details, reference can be made to aforementioned implementations
Example, will not be described in great detail herein.
Specifically, laser light source 501 is that ray machine 502 provides illumination, and ray machine 502 is modulated light beam of light source, and exports
It is imaged to camera lens 503, is projected to projection medium 505 (such as screen or wall etc.) and forms projected picture.Wherein, described
Ray machine 502 be the above-mentioned dmd chip based in laser light source optics framework.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (18)
1. a kind of laser light source characterized by comprising the laser of at least one color issues swashing at least one color
Light includes: in the transmission optical path of the laser
Condenser lens is assembled for the laser at least one color；
Light collecting device, the light collecting device include lens section and concave reflection face, and the lens section is concavees lens structure, described
Mirror portion is used for the light for reflecting the colour wheel to colour wheel, the reflecting surface of the light collecting device through the laser that the laser issues
Beam is reflected into even smooth component；
The colour wheel, including reflection-type substrate, at least provided with fluorescence portion on the reflection-type substrate, for filling the light harvesting
The laser reflection of transmission is set to the reflecting surface of the light collecting device；
The even smooth component, the light beam of the reflective surface for receiving the light collecting device, and the light beam received is carried out
Even light.
2. laser light source as described in claim 1, which is characterized in that the lens section is in light collecting device reflecting surface side
Face type it is consistent with the reflecting surface face type of the light collecting device.
3. laser light source as described in claim 1, which is characterized in that the lens section is to be embedded in the light collecting device to open up in advance
Hole in or the concave reflection face of the lens section and the light collecting device be wholely set.
4. laser light source as claimed in claim 3, which is characterized in that the lens section is in light collecting device concave reflection face
Dichroic film is coated on the surface of side, the first color that the dichroic film is used to that the laser of the first color to be made to issue swashs
Light penetrates, and the fluorescence portion of the colour wheel is made to be excited the fluorescent reflection generated.
5. laser light source as claimed in claim 4, which is characterized in that first color is blue.
6. laser light source as described in claim 1, which is characterized in that the reflection-type substrate further includes diffusing reflection portion, described
Diffusing reflection portion is used for the laser diffusion that penetrates light collecting device to the concave reflection face of the light collecting device.
7. laser light source as described in claim 1, which is characterized in that the fluorescence portion includes:
Second color fluorescence portion, the second color laser diffusion for penetrating the light collecting device to the light collecting device
Reflecting surface, the laser excitation penetrated by the light collecting device generate the fluorescence of the second color；
Third color fluorescence portion, third color laser diffusion for penetrating the light collecting device to the light collecting device
Reflecting surface, the laser excitation penetrated by the light collecting device generate the fluorescence of third color.
8. laser light source as claimed in claim 7, which is characterized in that second color is green, and the third color is
It is red.
9. such as laser light source described in any item of the claim 1 to 8, which is characterized in that the light collecting device is spherical reflecting
Bowl or oval reflector.
10. a kind of laser light source characterized by comprising the laser of at least one color issues swashing at least one color
Light includes: in the transmission optical path of the laser
Light collecting device, the light collecting device include lens section and concave reflection face, and the lens section is concavees lens structure, described
For the laser that mirror portion is used to issue through the laser to colour wheel, the colour wheel is reflected in the concave reflection face of the light collecting device
Light beam reflect into even smooth component；
Colour wheel, including reflection-type substrate, the reflection-type substrate is at least provided with fluorescence portion, for being penetrated by the light collecting device
Laser excitation generate fluorescence, it is anti-that the fluorescence portion of the colour wheel is excited the fluorescence generated by the concave reflection face of the light collecting device
It is mapped to the even smooth component；
Even smooth component, the light beam of the reflective surface for receiving the light collecting device, and even light is carried out to the light beam received；
Wherein, on the light collecting device, the light collecting device, each position corresponding to laser light incident is set the laser
It is equipped with the lens section of the concavees lens structure, the lens section is embedded in the hole that the light collecting device opens up in advance.
11. laser light source as claimed in claim 10, which is characterized in that the lens section is in the light collecting device reflecting surface one
The face type of side and the concave reflection face face type of the light collecting device are consistent.
12. laser light source as claimed in claim 10, which is characterized in that the lens section is in the light collecting device concave reflection
Dichroic film, the first color that the dichroic film is used to that the laser of the first color to be made to issue are coated on the surface of face side
Laser light makes the fluorescence portion of the colour wheel be excited the fluorescent reflection generated.
13. laser light source as claimed in claim 12, which is characterized in that first color is blue.
14. laser light source as claimed in claim 10, which is characterized in that the reflection-type substrate further includes diffusing reflection portion, institute
Laser diffusion of the diffusing reflection portion for penetrating light collecting device is stated to the concave reflection face of the light collecting device.
15. laser light source as claimed in claim 10, which is characterized in that the fluorescence portion includes:
Second color fluorescence portion, the second color laser diffusion for penetrating the light collecting device to the light collecting device
Reflecting surface, the laser excitation penetrated by the light collecting device generate the fluorescence of the second color；
Third color fluorescence portion, third color laser diffusion for penetrating the light collecting device to the light collecting device
Reflecting surface, the laser excitation penetrated by the light collecting device generate the fluorescence of third color.
16. laser light source as claimed in claim 15, which is characterized in that second color is green, the third color
For red.
17. the laser light source as described in any one of claim 10 to 16, which is characterized in that the light collecting device is that spherical surface is anti-
Light bowl or oval reflector.
18. a kind of laser projection device, including ray machine, camera lens and the laser light as described in any one of claims 1 to 17
Source；
The laser light source provides illumination for the ray machine, and the ray machine is modulated light beam of light source, and exports to described
Camera lens is imaged, and is projected to projection medium and is formed projected picture.
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| CN201610875228.4A CN106226985B (en) | 2016-09-30 | 2016-09-30 | A kind of laser light source and laser projection device |
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| CN106681094B (en) * | 2016-12-23 | 2018-09-21 | 海信集团有限公司 | A kind of fluorescence excitation device, projection light source and projection device |
| CN106773481B (en) * | 2016-12-23 | 2018-10-09 | 海信集团有限公司 | A kind of projection light source and projection device |
| CN106707669B (en) * | 2016-12-23 | 2018-08-24 | 海信集团有限公司 | A kind of fluorescence excitation device, projection light source and projection device |
| CN109838747A (en) * | 2017-09-13 | 2019-06-04 | 隆达电子股份有限公司 | Lighting system |
| CN109557754B (en) * | 2017-09-26 | 2024-05-28 | 深圳光峰科技股份有限公司 | Light source system and projection device |
| CN109917610B (en) * | 2017-12-12 | 2020-12-01 | 中强光电股份有限公司 | Light source module and projection device |
| CN110095930A (en) * | 2018-01-31 | 2019-08-06 | 中强光电股份有限公司 | Lighting system and projection arrangement |
| CN110618575A (en) * | 2018-06-20 | 2019-12-27 | 中强光电股份有限公司 | Illumination system and projection device |
| CN110879504B (en) * | 2018-09-06 | 2023-01-13 | 鸿富锦精密工业（深圳）有限公司 | Solid-state light source device |
| CN112443818B (en) * | 2019-08-30 | 2023-04-28 | 深圳市中光工业技术研究院 | Light source system and lighting device |
| JP2021092761A (en) | 2019-12-02 | 2021-06-17 | 株式会社リコー | Light source device and image projection device |
| WO2021185084A1 (en) * | 2020-03-20 | 2021-09-23 | 青岛海信激光显示股份有限公司 | Laser light source and laser projection apparatus |
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Effective date of registration: 20200814 Address after: 266000, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Patentee after: Qingdao Hisense Laser Display Co.,Ltd. Address before: Donghai West Road 266071 Shandong city of Qingdao province No. 17 Patentee before: HISENSE Co.,Ltd. |