CN110275379A - Three color laser light sources of one kind and laser projection device - Google Patents
Three color laser light sources of one kind and laser projection device Download PDFInfo
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- CN110275379A CN110275379A CN201810910789.2A CN201810910789A CN110275379A CN 110275379 A CN110275379 A CN 110275379A CN 201810910789 A CN201810910789 A CN 201810910789A CN 110275379 A CN110275379 A CN 110275379A
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Classifications
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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
- G03B21/2013—Plural light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—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)
- Projection Apparatus (AREA)
Abstract
The present invention discloses a kind of three color laser light sources, comprising: issues the first red laser array of the first red laser, the second red laser array of the second red laser of sending, the blue laser array for issuing blue laser, the first green laser array for issuing the first polarized green laser, the second green laser array for issuing the second polarized green laser, the 7th light combination portion, octadentate light portion, the 9th light combination portion and closes beam element.7th light combination portion is emitted to conjunction beam element after carrying out light combination to the first red laser, the second red laser；Beam element closes to being emitted to after blue laser, the first polarized green laser, the second polarized green laser light combination in octadentate light portion and above-mentioned 9th light combination portion；It closes after the light beam that the transmitting of the 7th light combination portion comes and the light beam that octadentate light portion, the transmitting of the 9th light combination portion come are carried out conjunction beam by beam element and is emitted to even smooth component.It avoids because using fluorescent powder due to the lower problem of bring fluorescence conversion efficiency, and makes light source volume smaller.
Description
Technical field
The present invention relates to laser light source technical fields, more particularly to a kind of three color laser light sources and laser projection device.
Background technique
Laser light source has and highlights, efficiently, the service life is long, and colour gamut is good, the series of advantages such as environmental protection as a kind of solid state light emitter
Selection as emerging projection light source.
The laser and fluorescent powder used in industry at present is excited in the light source of the fluorescence generated composition, is swashed usually using blue
Laser light source and excitation radiant of the light as laser projection system.In a kind of implementation of the prior art, blue laser
Getting on fluorescent wheel can excite green emitting phosphor and yellow fluorescent powder to generate green light and sodium yellow, then the mistake from sodium yellow respectively
Filter obtains red light.As shown in Figure 1, being reached after the outgoing of shrink beam system 102 from the blue laser that laser array 101 issues
Dichroscope 104 reaches focussed collimated lens group 105, line focus collimation lens set from laser beam after the transmission of dichroscope 103
The light beam of 105 outgoing, which is got on fluorescent wheel 103, excites fluorescent wheel to issue fluorescence, and exemplary fluorescent wheel 103 can be reflection herein
Type fluorescent wheel (including phosphor region and transmission area), thus the phosphor region of fluorescent wheel 103 gone out by laser excitation it is after fluorescence that fluorescence is anti-
It penetrates, the fluorescence reflected receives light by focussed collimated lens group 105, carries out convergence collimation, lambert's body (is referred to radiation source all directions
On radiance it is constant, radiation intensity with the angle between direction of observation and area source normal variation abide by cosine rule)
The wide-angle laser beam compression of distribution be less parallel beam exit to dichroscope 104, dichroscope 104 by the fluorescent reflection extremely
Optical wand.Blue laser is transferred to dichroic piece 104 by " blue light circuit " after penetrating above-mentioned transmission area and penetrates, and eventually enters into
Optical wand.Laser pumping fluorescent powder used by this kind of light source framework generate fluorescence scheme due to the transfer efficiency of fluorescence it is lower,
Lead to the laser energy of higher proportion to be wasted and also create amount of heat to be difficult to remove, and increasingly with projection size
Big development trend, the requirement to projection brightness is also higher and higher, and in the case where being continuously increased laser excitation power, fluorescence turns
The problem of changing low efficiency is more prominent.
Summary of the invention
In order to solve the problems, such as that fluorescence conversion efficiency is lower in laser light source, on the one hand the present invention provides a kind of three colors to swash
Radiant, comprising: the first red laser array, the second red laser array, blue laser array, the first green laser
Device array, the second green laser array, the 7th light combination portion, octadentate light portion, the 9th light combination portion and conjunction beam element, wherein on
It states the first red laser array and issues the first red laser, above-mentioned second red laser array issues the second red laser,
Above-mentioned blue laser array issues blue laser, and above-mentioned first green laser array issues the first polarized green laser, on
It states the second green laser array and issues the second polarized green laser；
Above-mentioned 7th light combination portion is emitted to conjunction beam element after carrying out light combination to the first red laser, the second red laser；Above-mentioned
Octadentate light portion and above-mentioned 9th light combination portion go out to after blue laser, the first polarized green laser, the second polarized green laser light combination
It is incident upon and closes beam element；Above-mentioned conjunction beam element emits the light beam that the transmitting of the 7th light combination portion comes and octadentate light portion, the 9th light combination portion
The light beam come is emitted to even smooth component after carrying out conjunction beam.
Further, which further includes reflecting part, is set to the 7th light combination portion and closes between beam element, and being used for will
The light beam of 7th light combination portion outgoing, which turns back to be emitted to after predetermined angle θ, closes beam element；Wherein, 60 °≤θ≤125 °.
Further, above-mentioned first red laser array is vertically arranged with above-mentioned second red laser array, above-mentioned
First green laser array is vertically arranged with above-mentioned blue laser array, above-mentioned second green laser array and above-mentioned indigo plant
Color laser array is vertically arranged；Above-mentioned 7th light combination portion transmits the first red laser and simultaneously reflects the second red laser, and above-mentioned the
Octadentate light portion transmits the second polarized green laser, blue laser, and reflects the first polarized green laser；Above-mentioned 9th light combination portion is saturating
Blue laser, the first polarized green laser are penetrated, and reflects the second polarized green laser；Wherein, the first polarized green laser
It is orthogonal with the polarization direction of the second polarized green laser.
Further, the 7th light combination portion includes the 7th echo area, for reflecting the second red laser and the 7th transmission
Area, for transmiting the first red laser；The octadentate light portion includes the 8th echo area, for reflecting the first polarized green laser simultaneously
The second polarized green laser and the 8th transmission area are transmitted, transmitting blue laser is used for；9th light combination portion includes the 9th reflection
Swash for reflecting the second polarized green laser and transmiting the first polarized green laser and the 9th transmission area for transmitting blue in area
Light.
Further, the 8th echo area is provided with the first polarizing coating, for reflecting the first polarized green laser and transmiting
Second polarized green laser；9th echo area is provided with the second polarizing coating, for reflecting the second polarized green laser and transmiting
First polarized green laser；Wherein, the polarization direction of the first polarized green laser and the second polarized green laser is orthogonal；It should
8th transmission area and the 9th transmission area are transparent glass or hollow design.
Further, the power P of above-mentioned blue laser array1For 50W ~ 85W, above-mentioned first red laser array with
The sum of the power of above-mentioned second red laser array P2For 65W ~ 95W, above-mentioned first green laser array and above-mentioned second
The sum of the power of green laser array P3For 25W ~ 50W.
On the other hand, the present invention also provides a kind of laser projection devices, including three color laser light sources, even smooth component, light
Valve components, camera lens.Wherein, which includes: the first red laser array, the second red laser array, indigo plant
Color laser array, the first green laser array, the second green laser array, the 7th light combination portion, octadentate light portion, the 9th
Light combination portion and conjunction beam element, wherein above-mentioned first red laser array issues the first red laser, above-mentioned second red laser
Device array issues the second red laser, and above-mentioned blue laser array issues blue laser, above-mentioned first green laser array
The first polarized green laser is issued, above-mentioned second green laser array issues the second polarized green laser.
Above-mentioned 7th light combination portion is emitted to conjunction beam element after carrying out light combination to the first red laser, the second red laser；On
Octadentate light portion and above-mentioned 9th light combination portion are stated to blue laser, the first polarized green laser, the second polarized green laser light combination
After be emitted to close beam element；The light beam and octadentate light portion, the 9th light combination portion that above-mentioned conjunction beam element carrys out the transmitting of the 7th light combination portion
The light beam that transmitting comes is emitted to even smooth component after carrying out conjunction beam.
The even smooth component is projected to above-mentioned light valve component after carrying out even light to red laser, blue laser, green laser.On
It states camera lens and receives the modulated light beam of the light valve component and be imaged.
Three colors laser light source and laser projection device provided by the invention are provided with two groups of red laser arrays and pass through
One light combination portion carries out light combination, is provided with one group of blue laser array and two groups of green laser arrays and by two light combinations
Portion carries out light combination jointly, avoids because using fluorescent powder due to the lower problem of bring fluorescence conversion efficiency, and makes laser
Arranged in the case where guaranteeing the sufficiently high situation of power more compact, light source volume is smaller.
Detailed description of the invention
Fig. 1 is the light source configuration diagram for using LASER Excited Fluorescence scheme in the prior art；
Fig. 2 is one of the three color laser light source configuration diagrams according to the embodiment of the present invention；
Fig. 3 A is the schematic perspective view according to the 7th light combination portion in three color laser light sources of the embodiment of the present invention；
Fig. 3 B is the schematic perspective view according to octadentate light portion in three color laser light sources of the embodiment of the present invention；
Fig. 3 C is the schematic perspective view according to the 9th light combination portion in three color laser light sources of the embodiment of the present invention；
Fig. 4 is according to the two of three color laser light source configuration diagram of the embodiment of the present invention；
Fig. 5 is the schematic cross-section according to fly's-eye lens in three color laser light sources of the embodiment of the present invention；
Fig. 6 is according to the three of three color laser light source configuration diagram of the embodiment of the present invention；
Fig. 7 is according to the four of three color laser light source configuration diagram of the embodiment of the present invention；
Fig. 8 is the configuration diagram according to the laser projection device of the 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 described embodiments are only a part 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.
Below in conjunction with attached drawing, technical solution provided in an embodiment of the present invention is described in detail.
The embodiment of the invention provides a kind of three color laser light sources, Fig. 2 is the three color laser lights according to the embodiment of the present invention
One of source configuration diagram, as shown in Fig. 2, the three colors laser light source includes that the first red laser array 11, second is red sharp
Light device array 12, blue laser array 31, the first green laser array 21, the second green laser array the 22, the 7th close
Light portion 51, octadentate light portion 52, the 9th light combination portion 53 and conjunction beam element 54.Wherein, the first red laser array 11 issues the
One red laser, the second red laser array 12 issue the second red laser, and blue laser array 31 issues blue laser,
First green laser array 21 issues the first polarized green laser, and the second green laser array 22 issues the second polarized green
Laser；
Above-mentioned first red laser, the second red laser via be emitted to after 51 light combination of the 4th light combination portion close beam element 54.Certainly,
Alternatively it is also possible in the 7th light combination portion 51 and setting reflecting part 41 between beam element 54 is closed, the light of the 7th light combination portion 51 outgoing
Beam, which reenters to be incident upon after reflecting part 41 is turned back, closes beam element 54.Reflecting part 41 can be at 60 ° to 125 ° to the angle, θ of turning back of light beam
Between any value, the preferred θ of the present embodiment be 90 °, i.e., setting reflecting part 41 and 51 outgoing beam primary optical axis of the 7th light combination portion it
Between angle be 45 °.By the effect of turning back of reflecting part 41, light of the red laser in Fig. 2 in horizontal direction is substantially reduced
Road distance is conducive to the reduction of light source volume.If being not provided with reflecting part 41, the light beam of the 7th light combination portion 51 outgoing is by edge
Horizontal direction glancing incidence in Fig. 2 extremely closes beam element 54.
Blue laser, the first polarized green laser, the second polarized green swash in octadentate light portion 52 and the 9th light combination portion 53
It is emitted to after actinic light and closes beam element 54.
It closes after three color laser are uniformly carried out conjunction beam by beam element 54 and is emitted to even smooth component 91, i.e., send out the 7th light combination portion 51
It penetrates the red laser light beam come and is transmitted through even smooth component 91, the blue that octadentate light portion 52, the transmitting of the 9th light combination portion 53 come is swashed
Light light beam, green laser beam reflex to even smooth component 91.
Close beam element 54 three color laser can be carried out conjunction beam and to blue laser, green laser turn back optical path to
Reduce light source volume.
It should be noted that closing beam element 54 can also turn back to the optical path of red laser, at this point, the 7th light combination portion
The red laser light beams of 51 outgoing, which reach, to be closed beam elements 54 and is reflected onto even smooth component 91, and octadentate light portion 52, the 9th light combination
The next blue laser beams of the transmitting of portion 53, green laser beam, which reach after closing beam element 54, is then transmitted to even smooth component 91.?
In this case, so that it may be arranged between octadentate light portion 52, the two light combination portions, the 9th light combination portion 53 and conjunction beam element 54
Reflecting mirror 41, to realize the effect of turning back to blue laser, green laser optical path.
Three colors laser light source provided in an embodiment of the present invention is provided with two groups of red laser arrays and by a light combination
Portion carry out light combination, be provided with one group of blue laser array and two groups of green laser arrays and by two light combination portions jointly into
Row light combination, avoids because using fluorescent powder due to the lower problem of bring fluorescence conversion efficiency, and laser is made to guarantee function
Arrange more compact in the sufficiently high situation of rate, light source volume is smaller.Further, and respectively pass through reflecting part, conjunction beam element pair
Red optical path, blue light path, green optical path are turned back, and the volume of light source design has been further reduced.
In an embodiment of the invention, as shown in Fig. 2, the first red laser array 11 and the second red laser
Device array 12 is vertically arranged, and is then closed by the 7th light combination portion 51 being obliquely installed to the first red laser and the second red laser
Light so interior in a limited space can arrange more red lasers, to increase the function of red laser at a branch of rear outgoing
Rate.It as the inclined angle in the 7th light combination portion 51, is not particularly limited, the first red laser is transmitted as long as being able to achieve
And the second red laser is reflected.The present embodiment preferably the 7th light combination portion 51 and the first red laser array 11
Angular range is 30 ° ~ 65 °, can be more preferably 40 ° ~ 50 °.Certainly, the first red laser array 11 and second is red sharp
Light device array 12 can also be in the angle of non-perpendicular angle, for example can only need to adjust at this time in 110 ° of settings or 80 ° of settings
The angle of 7th light combination portion 51 and the first red laser array 11 is arranged to cooperate and complete to transmit the first red laser
And the second red laser is reflected.It can also be set on the emitting light path in the 7th light combination portion 51 in the embodiment of the present invention
The first shrink beam microscope group 81 is set, to carry out shrink beam to red laser, to reduce facula area, conducive to the transmission effect for improving light beam
Rate.
It is vertically arranged with blue laser array 31 and second alternatively, it is also possible to which the first green laser array 21 is arranged
Green laser array 22 is vertically arranged with blue laser array 31, that is, the first green laser array 21 and second is green
Color laser array 22 is arranged oppositely, wherein the polarization direction of the first polarized green laser and the second polarized green laser
It is orthogonal.Then blue laser, the first polarized green are swashed by the octadentate light portion 52, the 9th light combination portion 53 that are obliquely installed
Light and the second polarized green laser combine light into a branch of rear outgoing, so interior in a limited space can arrange more green lasers
Blue laser can also be carried out light combination to increase the power of green laser by device together with green laser, be saved individually
The occupied optical path space of blue light path, further reduced light source volume.By octadentate light portion 52 and in the present embodiment
The position arranged in a crossed manner between the first green laser array 21 and the second green laser array 22 of nine light combination portion 53.As for
Octadentate light portion 52, the inclined angle in the 9th light combination portion 53, are not particularly limited, if be able to achieve it is right by octadentate light portion 52
First polarized green laser is reflected and is transmitted to the second polarized green laser, blue laser, the nine light combination portion Ji You
53 pair of second polarized green laser is reflected and is transmitted to the first polarized green laser, blue laser.The present embodiment is excellent
Selecting the angular range of octadentate light portion 52 and the first green laser array 21 is 30 ° ~ 65 °, can be more preferably 40 ° ~
50°；It is preferred that the angular range of the 9th light combination portion 53 and the first green laser array 21 is 30 ° ~ 65 °, can be more preferably
40°~50°。
Certainly, the first green laser array 21 and blue laser array 31 and the second green laser array 22 with
Blue laser array 31 can also be in the angle of non-perpendicular angle, for example can only need at this time in 110 ° of settings or 80 ° of settings
The angle for adjusting octadentate light portion 52 and the first green laser array 21 is arranged to cooperate and complete to swash the first polarized green
Light is reflected and is transmitted to the second polarized green laser, blue laser, and the 9th light combination portion 53 of adjustment and first green
Color laser array 21 angle setting with cooperate complete to the second polarized green laser reflected and to the first polarized green
Laser, blue laser transmission.Certainly, the first red laser array 11 can also be in the second red laser array 12
The angle of non-perpendicular angle, for example can only need to adjust the 7th light combination portion 51 and first at this time in 110 ° of settings or 80 ° of settings
Red laser array 11 angle setting with cooperate complete to the first red laser carry out transmission and to the second red laser into
Row reflection.In the embodiment of the present invention can also octadentate light portion 52, the 9th light combination portion 53 emitting light path on be arranged
Two shrink beam microscope groups 82, to carry out shrink beam to blue laser, green laser, to reduce facula area, conducive to the biography for improving light beam
Defeated efficiency.
In an embodiment of the invention, Fig. 3 A, Fig. 3 B and Fig. 3 C are respectively three color according to an embodiment of the present invention
The schematic perspective view in the 7th light combination portion, octadentate light portion and the 9th light combination portion in laser light source, as shown in Figure 3A, the 7th closes
Light portion 51 includes the 7th transmission area 512, is arranged on the emitting light path of the first red laser, red sharp for transmiting first
Light；Also include the 7th echo area 511, be arranged on the emitting light path of the second red laser, for reflecting the second red laser.
7th echo area 511 is usually to be distributed in distance with the 7th transmission area 512, and respective quantity is not particularly limited, and usually divides
Not depending on the number of lasers and arrangement in the second red laser 12 and the first red laser array 11.Specifically,
7th transmission area 512 can be transparent glass, or hollow design, as long as the light of various colors can be penetrated.7th
Echo area 511 is also possible to be coated with reflectance coating on opaque substrate either be coated with reflectance coating on the glass substrate.
As shown in Figure 3B, octadentate light portion 52 includes the 8th echo area 521, and the 8th echo area 521 is arranged first
On the emitting light path of polarized green laser, the first polarized green laser is reflected；8th echo area 521 is also at least partly
Second polarized green laser is set by being transmitted in the optical path after the reflection of the 9th light combination portion 53 to the second polarized green laser.?
In the present embodiment, the first polarized green laser is S-polarization green laser, and the second polarized green laser is P polarization green laser, S
Polarized green laser is vertical with the polarization direction of P polarization green laser.In this way, can be arranged on the 8th echo area 521
One polarizing coating, first polarizing coating reflect S-polarization green laser, transmit to P polarization green laser.Octadentate light portion 52 is also wrapped
Containing the 8th transmission area 522, the 8th transmission area 522 is arranged on the emitting light path of blue laser, transmitting blue laser, this
Eight transmission areas 522 are transparent glass or hollow design.8th echo area 521 is usually to be distributed in distance with the 8th transmission area 522,
Respective quantity is not particularly limited, usually respectively according in the second green laser 22 and the first green laser array 21
Number of lasers and arrangement depending on.
In addition, as shown in Figure 3 C, the 9th light combination portion 53 includes the 9th echo area 531, the setting of the 9th echo area 531 is the
On the emitting light path of two polarized green laser, the second polarized green laser is reflected；9th echo area 531 also at least portion
Set up separately and set in the optical path after the first polarized green laser is reflected by octadentate light portion 52, the first polarized green laser is transmitted.
In the present embodiment, the first polarized green laser is S-polarization green laser, and the second polarized green laser is P polarization green laser,
S-polarization green laser is vertical with the polarization direction of P polarization green laser.In this way, can be arranged on the 9th echo area 531
Two polarizing coatings, second polarizing coating reflect P polarization green laser, transmit to S-polarization green laser.9th light combination
Portion 53 also includes the 9th transmission area 532, is arranged on the emitting light path of blue laser, transmitting blue laser, the 9th transmission
Area 532 is transparent glass or hollow design.9th echo area 531 is usually to be distributed in distance with the 9th transmission area 532, respective
Quantity is not particularly limited, usually respectively according to the laser in the second green laser 22 and the first green laser array 21
Depending on device quantity and arrangement.
In an embodiment of the invention, the power P of blue laser array 311Value range is 50W ~ 85W；The
The sum of the power of one red laser array 11 and the second red laser array 12 P2Value range be 65W ~ 95W, wherein
The power of first red laser array 11 can be equal with the power of the second red laser array 12, can also have and be no more than
The difference of 15W；The sum of the power of first green laser array 21 and the second green laser array 22 P3For 25W ~ 50W,
In, the power of the first green laser array 21 can be equal with the power of the second green laser array 22, can also have not
Difference more than 10W.
In an embodiment of the invention, reflecting part 41 is set between the 7th light combination portion 51 and conjunction beam element 54,
The reflecting part 41 can be plane mirror, the folder between the primary optical axis of 51 outgoing beam of the plane mirror and the 7th light combination portion
Angle is α, and 25 °≤α≤65 °, at this point, the plane mirror outgoing beam in the 7th light combination portion 51 can be turned back after again
It is incident to and closes beam element 54.Red laser level side in Fig. 2 can be greatly shortened by the effect of turning back of the plane mirror
Upward optical path distance is conducive to the reduction of light source volume.Go out it is of course also possible to be arranged and close beam element 54 with the 7th light combination portion 51
Angle is β between the primary optical axis of irradiating light beam, 25 °≤β≤65 °.
In an embodiment of the invention, Fig. 4 is to be illustrated according to three color laser light source frameworks of the embodiment of the present invention
The two of figure are set to as shown in figure 4, three color laser light sources in present embodiment further include diffusion wheel 71 and close beam element 54
It is rotated on emitting light path and by motor control.The wheel piece of the diffusion wheel 71 can select diffusion sheet material, can also select
Micro-structure is set with transparent glass and on the wheel piece surface or is coated with diffuser, to swash through blue laser, red
Dynamic diffusion is carried out while light, green laser.Present embodiment can generate some random phases spatially to laser beam
Position can weaken the high coherence due to laser and the speckle effect that generates in imaging, promote projection imaging quality.
On the basis of the embodiment above further, as shown in figure 4, the three colors laser light source further includes having the first expansion
Dissipate portion 61, the second diffusion part 62.First diffusion part 61 is fixed on the emitting light path in the 7th light combination portion 51, to red
Laser carries out static diffusion.Second diffusion part 62 is fixed at the emitting light path in octadentate light portion 52, the 9th light combination portion 53
On, to carry out static diffusion to blue laser, green laser.First diffusion part 61, the second diffusion part 62 can both select diffusion
Piece material can also select fly's-eye lens (as shown in Figure 5), and the present embodiment is not particularly limited.In the present embodiment, red
Laser, blue laser and green laser respectively the first diffusion part 61 by fixed setting, can increase after the second diffusion part 62
The space phase of colored light beams destroys the condition of this generation of phase-constant interference to a certain extent.Further, due to rotation
Diffusion wheel 71 itself laser beam can inherently be produced compared to the first diffusion part 61, the second diffusion part 62 of fixed setting
Raw some random phases spatially, can preferably destroy the coherence of laser, and fixation is used in embodiment of the present invention
The first diffusion part 61, the second diffusion part 62 and the diffusion wheel 71 of movement match so that static diffusion and dynamic are spread
It acts on superimposed, so that the dispersion angle of light beam is become diversification, and the diversification of beam divergence angle makes the optical path difference of light beam
Mutation obtains diversified, and light path determines the variation of phase, therefore the phase of light beam changes, so that light path difference makes at random
The probability that phase generates increases, and random phase can generate random speckle pattern, and the speckle pattern with randomness is in people
When eye generates integrating effect, the phenomenon that light and shade spot, is weaker, so as to effectively weaken the speckle effect of laser, improves projection
Image displaying quality.
In addition, in the above-described embodiment, the first beam-shrinked mirror can also be arranged on the emitting light path in the 7th light combination portion 51
Group 81, to carry out shrink beam to red laser；Octadentate light portion 52, the 9th light combination portion 53 emitting light path on the second shrink beam is set
Microscope group 82, to carry out shrink beam to blue laser, green laser.The efficiency of transmission for not only contributing to improve light beam in this way, can be with
Because each light beam is irradiated to the diminution of the facula area on proliferation part, to improve the diffuser efficiency of laser beam.
In an embodiment of the invention, as shown in fig. 6, the three colors laser light source further includes diffusion wheel 71 and third
Diffusion part 63.The third diffusion part 63 can both select diffusion sheet material, can also select fly's-eye lens, be fixedly installed on conjunction beam
On the emitting light path of element 54, red laser, blue laser, the green laser of the outgoing of pairing beam element 54 carry out static diffusion.
Diffusion wheel 71 be also disposed at close beam element 54 emitting light path on, both can be set third diffusion part 63 emitting light path it
Afterwards, it also can be set before the emitting light path of third diffusion part 63, red laser, blue laser, green laser moved
State diffusion.Third diffusion part 63 can increase the space phase of colored light beams, destroy this production of phase-constant to a certain extent
The condition of raw interference.Further, since the diffusion of rotation takes turns 71 in itself inherently compared to the third diffusion part 63 of fixed setting
Some random phases spatially can be generated to laser beam, can preferably destroy the coherence of laser, and the present invention is real
It applies in mode and is matched using the diffusion wheel 71 of fixed third diffusion part 63 and movement, so that static diffusion and dynamic expand
It is superimposed to dissipate effect, the dispersion angle of light beam is made to become diversification, and the diversification of beam divergence angle makes the light path of light beam
Difference become diversification, light path determines the variation of phase, therefore the phase of light beam changes, thus light path difference make with
The probability that machine phase generates increases, and random phase can generate random speckle pattern, and the speckle pattern with randomness exists
When human eye generates integrating effect, the phenomenon that light and shade spot, is weaker, so as to effectively weaken the speckle effect of laser, improves and throws
Shadow image displaying quality.
In an embodiment of the invention, as shown in fig. 7, the three colors laser light source further include the 4th diffusion part 64,
5th diffusion part 65, the 6th diffusion part 66.4th diffusion part 64 is fixedly installed on the emitting light path in the 7th light combination portion 51, with
Static diffusion is carried out to red laser.5th diffusion part 65 be fixedly installed on octadentate light portion 52, the 9th light combination portion 53 go out
It penetrates in optical path, to carry out static diffusion to blue laser, green laser.In present embodiment, the 4th diffusion part 64 and the 5th expands
Diffusion sheet material can both be selected by dissipating portion 65, can also select fly's-eye lens, the present embodiment is not particularly limited.In this embodiment party
In formula, red laser, blue laser and green laser respectively the 4th diffusion part 64 by fixed setting, after the 5th diffusion part 65
The space phase of colored light beams can be increased, destroy the condition of this generation of phase-constant interference to a certain extent.Then again
By the way that the 6th diffusion part 66 is arranged on the emitting light path for closing beam element 54, the tri-color beam of pairing Shu Yihou is expanded again
It dissipates, further increases more random phases, can preferably destroy the relevant of blue laser, red laser and green laser
Property.It should be noted that the 6th diffusion part 66 in the present embodiment selects fly's-eye lens (as shown in Figure 5), because fly's-eye lens has
There is high light transmittance and have to light beam and preferably homogenize diffusion, when with the 4th diffusion part 64, the cooperation of the 5th diffusion part 65 not
The speckle effect that only can effectively weaken laser, can also homogenize beam energy, and avoid mechanical using generating
The disperser of rotation, has further reduced light source volume.
The embodiment of the invention also provides a kind of laser projection device, Fig. 8 is the laser projection according to the embodiment of the present invention
The configuration diagram of device, as shown in figure 8, the laser projection device includes three color laser light sources 01, ray machine 02, camera lens 03.Its
In, three color laser light sources 01 can include for three color laser light sources of any embodiment in the respective embodiments described above, ray machine 02
Even smooth component 91 and light valve component 201.In present embodiment three color laser light sources 01 outgoing red laser, blue laser,
Green laser is projected to light valve component 201 after the even smooth component 91 in ray machine 02 is homogenized, and light valve component 201 is to receiving
Light beam be modulated after be emitted to camera lens 03, camera lens 03 modulated light beam can be imaged and be projected to screen 04 or
On any other medium that can be shown.
Laser projection device provided in an embodiment of the present invention, because being provided with two groups of red lasers in three color laser light sources 01
Device array simultaneously carries out light combination by a light combination portion, is provided with one group of blue laser array and two groups of green laser arrays simultaneously
Light combination is carried out jointly by two light combination portions, is avoided because using fluorescent powder due to the lower problem of bring fluorescence conversion efficiency,
And it is more compact that laser is arranged in the case where guaranteeing the sufficiently high situation of power, light source volume is smaller；Further, and respectively lead to
Cross reflecting part, close beam element turn back to red optical path, blue light path, green optical path, further reduced light source design
Volume, to reduce the volume of the laser projection device.
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 (10)
1. a kind of three color laser light sources characterized by comprising the first red laser array, the second red laser array,
Blue laser array, the first green laser array, the second green laser array, the 7th light combination portion, octadentate light portion,
Nine light combination portions and conjunction beam element, wherein the first red laser array issues the first red laser, and described second is red sharp
Light device array issues the second red laser, and the blue laser array issues blue laser, the first green laser battle array
Column issue the first polarized green laser, and the second green laser array issues the second polarized green laser；
The 7th light combination portion is emitted to the conjunction beam after carrying out light combination to first red laser, second red laser
Element；
The octadentate light portion and the 9th light combination portion are to the blue laser, the first polarized green laser, described the
The conjunction beam element is emitted to after two polarized green laser light combinations；
It is described to close the light beam and the octadentate light portion, the 9th light combination portion hair that beam element carrys out the 7th light combination portion transmitting
It penetrates after the light beam come carries out conjunction beam and is emitted to even smooth component.
2. laser light source according to claim 1, which is characterized in that the laser light source further includes reflecting part, is set to
Between the 7th light combination portion and the conjunction beam element, the light beam for the 7th light combination portion to be emitted is turned back predetermined angle θ
After be emitted to the conjunction beam element；Wherein, 60 °≤θ≤125 °.
3. laser light source according to claim 1, which is characterized in that the first red laser array and described second
Red laser array is vertically arranged, and the first green laser array is vertically arranged with the blue laser array, institute
The second green laser array is stated to be vertically arranged with the blue laser array；
The 7th light combination portion transmits first red laser and reflects second red laser, and the octadentate light portion is saturating
The second polarized green laser, the blue laser are penetrated, and reflects the first polarized green laser；
The 9th light combination portion transmits the blue laser, the first polarized green laser, and it is green to reflect second polarization
Color laser, wherein the polarization direction of the first polarized green laser and the second polarized green laser is orthogonal.
4. laser light source according to claim 3, which is characterized in that the 7th light combination portion includes the 7th echo area, is used
In reflecting second red laser and the 7th transmission area, for transmiting first red laser；
The octadentate light portion includes the 8th echo area, for reflecting the first polarized green laser and transmiting described second partially
Shake green laser and the 8th transmission area, for transmiting the blue laser；
The 9th light combination portion includes the 9th echo area, for reflecting the second polarized green laser and transmiting described first partially
Shake green laser and the 9th transmission area, for transmiting the blue laser.
5. laser light source according to any one of claims 1 to 4, which is characterized in that the laser light source further include: diffusion
Wheel, be set on the emitting light path for closing beam element and it is controlled rotated, for red laser, blue laser, green
Laser carries out dynamic diffusion.
6. laser light source according to any one of claims 1 to 4, which is characterized in that the 7th light combination portion and described the
The angular range of one red laser array is 30 ° ~ 65 °；
The angular range of the octadentate light portion and the blue laser array is 30 ° ~ 65 °；
The angular range of the 9th light combination portion and the blue laser array is 30 ° ~ 65 °.
7. a kind of three color laser light sources characterized by comprising the first red laser array of the first red laser of sending,
The the second red laser array for issuing the second red laser, issues first partially at the blue laser array for issuing blue laser
Shake the first green laser array of green laser, the second green laser array of the second polarized green laser of sending, the 7th
Light combination portion, octadentate light portion, the 9th light combination portion and conjunction beam element；
The 7th light combination portion is emitted to the conjunction beam after carrying out light combination to first red laser, second red laser
Element；
The octadentate light portion and the 9th light combination portion are to the blue laser, the first polarized green laser, described the
The conjunction beam element is emitted to after two polarized green laser light combinations, wherein the first green laser array and described second
Green laser array is arranged oppositely, and the octadentate light portion and the 9th light combination portion are arranged in a crossed manner sharp in first green
Between light device array and the second green laser array；
It is described to close beam element the light beam that the 7th light combination portion transmitting comes is transmitted through even smooth component, and by the octadentate light
The light beam that portion, the 9th light combination portion transmitting come reflexes to even smooth component.
8. laser light source according to claim 7, which is characterized in that the laser light source further includes reflecting part, is set to
Between the 7th light combination portion and the conjunction beam element；The primary optical axis of 7th light combination portion outgoing beam and the reflecting part institute
Angle between plane is α, 25 °≤α≤65 °.
9. laser light source according to claim 7, which is characterized in that the first red laser array and described second
Red laser array is vertically arranged, and the first green laser array is vertically arranged with the blue laser array, institute
The second green laser array is stated to be vertically arranged with the blue laser array；
The 7th light combination portion includes the 7th echo area, for reflecting second red laser and the 7th transmission area, for saturating
Penetrate first red laser；
The octadentate light portion includes the 8th echo area, for reflecting the first polarized green laser and transmiting described second partially
Shake green laser and the 8th transmission area, for transmiting the blue laser；
The 9th light combination portion includes the 9th echo area, for reflecting the second polarized green laser and transmiting described first partially
Shake green laser and the 9th transmission area, for transmiting the blue laser.
10. a kind of laser projection device, which is characterized in that including the described in any item laser light sources of claim 1 to 9, even light
Component, light valve component, camera lens；
Green laser, blue laser, the red laser of the laser light source outgoing project after the even smooth component carries out even light
To the light valve component；
The light valve component is emitted to the camera lens after being modulated to the light beam received.
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| CN201810219611 | 2018-03-16 | ||
| CN2018102196113 | 2018-03-16 |
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| CN201810910789.2A Pending CN110275379A (en) | 2018-03-16 | 2018-08-10 | Three color laser light sources of one kind and laser projection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022007679A1 (en) * | 2020-07-06 | 2022-01-13 | 青岛海信激光显示股份有限公司 | Light source assembly and projection device |
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