CN108398804A - A kind of laser dissipation spot light path and laser projection light-source system - Google Patents
A kind of laser dissipation spot light path and laser projection light-source system Download PDFInfo
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- CN108398804A CN108398804A CN201810265462.4A CN201810265462A CN108398804A CN 108398804 A CN108398804 A CN 108398804A CN 201810265462 A CN201810265462 A CN 201810265462A CN 108398804 A CN108398804 A CN 108398804A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/48—Laser speckle optics
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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
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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
- G03B21/206—Control of light source other than position or intensity
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention discloses a kind of laser dissipation spot light path and laser projection light-source systems, are related to technical field of laser display.It includes diffusion component and for collimating or the lens subassembly of optically focused, the diffusion component is at least made of two proliferation parts, wherein, at least one proliferation part is the speckle device that dynamically disappears, remaining proliferation part is that static state disappears speckle device, and the disappear motion mode of speckle device of the dynamic is period rotation；The lens subassembly is set between proliferation part.By being applied in combination for dynamic proliferation part and static proliferation part, preferable dissipation spot and light spot homogenizing function are realized.Laser beam is dissipated, is collimated repeatedly in the present invention, greatly reduces the spatial coherence of laser beam, to effective solution speckle issue.Laser dissipation spot light channel structure provided by the present invention is simple, small volume, can be easily integrated in laser display system so that mechanical-optical setup is compacter.
Description
Technical field
The present invention relates to technical field of laser display more particularly to a kind of for swashing in laser projection lighting system light path
Light dissipation spot light path and laser projection light-source system.
Background technology
Laser projection is as a kind of shadow casting technique that new development is got up, and using diode laser as light source, light is through shining
It is incident upon after the bright even light of system on optical modulator chip (DMD, LCD, LCOS etc.), is then imaged in image planes through projection lens.Its
In, the high coherence of laser causes the speckle effect during laser projection is shown, speckle refers to coherent light source illumination rough object
When, the light after scattering is due to constant phase difference, and frequency of light wave is identical, and direction of vibration is consistent, generates interference, some portions in space
Interference is divided mutually to grow, some partial coherence cancellations, final result is exactly to occur light and dark spot on the screen, namely dissipate
Spot, these unfocused spots appear to be flicker in human eye, and viewing for a long time easily causes discomfort, more seriously affects shadowgraph
The quality in face reduces the viewing experience of user.
Dissipation spot early has become a big project, dissipation spot that is, eliminating coherence in laser projection, reduces the space phase of laser beam
Dryness and temporal coherence are to solve the effective way of speckle issue；In laser projection display technology, set in illumination path
It sets dynamic or static diffusion sheet carries out dissipation spot processing, and the position of diffusion sheet setting and mode are different, obtain different dissipations
Spot effect.In existing technical solution, laser dissipation spot effect is general, and speckle phenomena still can be observed in projected picture, still need into
One-step optimization diffusion sheet set-up mode reaches best dissipation spot effect.
Invention content
The purpose of the present invention is directed to above-mentioned background technology, provides a kind of laser dissipation spot light path and laser projection light source system
System, realizes preferable dissipation spot and light spot homogenizing function.
In order to reach above-mentioned technique effect, the present invention takes following technical scheme：
A kind of laser dissipation spot light path, it includes diffusion component and for collimating or the lens subassembly of optically focused, the diffusion
Component is at least made of two proliferation parts, wherein at least one proliferation part is the speckle device that dynamically disappears, remaining proliferation part
Disappear speckle device for static state, the disappear motion mode of speckle device of the dynamic is period rotation；The lens subassembly is set to expansion
Between separate component.By being applied in combination for dynamic proliferation part and static proliferation part, realize that preferable dissipation spot and hot spot are even
Change function.
Further technical solution is：The diffusion component is made of two proliferation parts or three proliferation parts, when
When the diffusion component is made of two proliferation parts, two proliferation parts be dynamic disappear speckle device or one of them
Proliferation part is that static state disappears speckle device, another proliferation part is that dynamic disappears speckle device；When the diffusion component is by three
When proliferation part forms, two of which proliferation part is that static state disappears speckle device, another proliferation part is dynamic dissipation spot dress
It sets.
Further technical solution is：The dynamic speckle device that disappears includes diffusion wheel and motor and co-axial joint system,
The motor drives diffusion wheel to do period rotary motion.
Further technical solution is：Single layer diffusion wheel that the diffusion wheel is made of single-layer disc shape diffusion sheet or
The double-deck diffusion wheel being made of two layers of disc diffusion sheet.
Further technical solution is：The double-deck diffusion wheel includes that the first diffusion wheel and the second diffusion are taken turns, and described first
Diffusion wheel and the second diffusion wheel are between the same end of motor and co-axial joint system, the first diffusion wheel and the second diffusion wheel
It is installed using interval or is close to install.
Further technical solution is：The double-deck diffusion wheel includes that the first diffusion wheel and the second diffusion are taken turns, and described first
Mounted on the different ends of motor and co-axial joint system, the first diffusion wheel and the second diffusion are taken turns for diffusion wheel and the second diffusion wheel
Intermediate place lens subassembly.
Further technical solution is：The disc diffusion sheet includes three diffusion regions of red, green, blue, each diffusion region
It is set as different divergence half-angles according to the dissipation spot difference of red, green, blue laser wavelength.
Further technical solution is：For the first diffusion wheel without subregion, the divergence half-angle in each region is identical；Second diffusion
Wheel is divided into three diffusion regions of red, green, blue, and each divergence half-angle for spreading subregion is similar and different.
Further technical solution is：The static state disappears speckle device as static diffusion sheet, and material is that glass or quartz are thin
Piece or plastics, single or double diffusing scattering.
Simultaneously the present invention also provides a kind of laser projection light-source system, it includes that a kind of laser as described above disappears speckle light
Road and drive electric power unit, green laser array, red laser array, blue laser array, light-integrating subassembly are hoped
Remote component and optical wand；The drive electric power unit output pulse signal, driving red, green, blue laser array successively timesharing send out it is red,
Green, blue laser, and closing light is completed by light-integrating subassembly, then disappeared by being incident on laser after component realization beam size compression of looking in the distance
In speckle light path, laser beam focuses on optical wand entrance by after multiple diffusion, collimation in laser dissipation spot light path.
Explanation is further explained to the present invention below：
There are three proliferation parts for setting in the laser dissipation spot light path, and the first proliferation part and the second proliferation part are set
It is set to static state, third proliferation part is set as dynamic, for being diffused, homogenizing to laser beam, is provided between proliferation part
Lens group, for after spread beam collimation or light beam convergence, it is especially described in the present invention after the diffusion more than three times
Two static state plus a dynamic method, the spatial coherence of preamble laser beam are greatly lowered, and effectively eliminate laser interference generation
Striped, thus the problem of projected picture speckle be greatly improved.
Preferably, first proliferation part and the second proliferation part are static diffusion sheet, and material is that glass or quartz are thin
Piece or plastics, single or double diffusing scattering.
Preferably, the third proliferation part is set as dynamic, is composed of motor sub-assembly and diffusion wheel, motor drives
Diffusion wheel does period rotary motion.
Preferably, the diffusion wheel is the double-deck diffusion wheel of two layers of disc diffusion sheet composition, and the diffusion wheel is divided into green
Light diffusion region, feux rouges diffusion region and blue light diffusion region；When green laser shines, diffusion wheel goes to green light diffusion region；It is hot
When color laser shines, diffusion wheel goes to red diffusion region；When blue laser shines, diffusion wheel goes to blue diffusion region,
The time sequential pulse exported by driving power lights laser and realizes that timesharing shines and diffuser realization corresponding with diffusion wheel is same
Step.
Diffusion wheel is divided into three diffusion regions of RGB, and advantage is can be according to the dissipation spot effect of RGB monochromatic field to list
One colour field carries out speckle fine tuning and optimizes without influencing other colour fields, as slightly poor in worked as red dissipation spot effect, and green and blue field
When dissipation spot effect is preferable, need to only change the diffusion sheet characteristic of red diffusion region can optimize the speckle effect of red field；Meanwhile
The angle of divergence of the diffusion wheel also fine-tuning RGB light beam of subregion.
Or it is preferred, the diffusion wheel is the single layer diffusion wheel of single layer diffusion sheet composition, is also classified into green light diffusion region, red
Light diffusion region and blue light diffusion region, function and control mode are identical as above-mentioned bi-layer approach.
Particularly, the position of static proliferation part described in the invention and dynamic proliferation part always can be in this dissipation
It shifts one's position in the lens or lens group of spot light path, but proliferation part sum remains three.
Particularly, dissipation spot method described in the invention, which removes, is used for blue, green, red trichromatism laser lighting or projection system
System, any one corresponded in three kinds of light beams are also the same effective.
The beneficial effects of the invention are as follows：In the laser dissipation spot light path of the present invention, two static proliferation parts and one are set
The mode of a dynamic proliferation part realizes that laser projection shows dissipation spot purpose, and compared with prior art, either white field is still
RGB monochromatic field can realize preferable dissipation spot effect；Dynamic proliferation part is divided into the different diffusion region of RGB, is led to
It crosses the Time Division Synchronous to shine with laser to control, corresponding dynamic can be adjusted respectively according to the speckle effect of RGB sprite
The diffusion angle of diffusion region realizes the fine tuning of dissipation spot effect；Laser beam is dissipated, is collimated repeatedly in the present invention, is greatly reduced
The spatial coherence of laser beam, to effective solution speckle issue.Laser dissipation spot light channel structure provided by the present invention
Simply, small volume can be easily integrated in laser display system so that mechanical-optical setup is compacter.
Description of the drawings
Fig. 1 is laser dissipation spot light path and laser projection light source schematic diagram in the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram (bilayer) of third proliferation part in the embodiment of the present invention one；
Fig. 3 is the structural schematic diagram (single layer) of third proliferation part in the embodiment of the present invention one；
Fig. 4 is laser dissipation spot light path and laser projection light source schematic diagram in the embodiment of the present invention two；
Fig. 5 is the structural schematic diagram of the first proliferation part in the embodiment of the present invention two；
Fig. 6 is laser dissipation spot light path and laser projection light source schematic diagram in the embodiment of the present invention three；
Fig. 7 is the structural schematic diagram of the second proliferation part in the embodiment of the present invention three；
Fig. 8 is laser dissipation spot light path and laser projection light source schematic diagram in the embodiment of the present invention four.
Fig. 9 is third proliferation part schematic view of the mounting position in the embodiment of the present invention four.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
The present invention is limited, described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.
Embodiment one
As shown in Figure 1, in the present embodiment, a kind of laser dissipation spot light path and laser projection light-source system, driving are provided
Supply unit 10 sends out pulse signal, and timesharing drives green laser array 21, red laser array 22 and blue laser
Array 23 sends out green red blue laser respectively, and economic cooperation optical element 24 synthesizes white light, after white light is by component 30 of looking in the distance, the bore of light beam
Dissipation spot light path 40 is incident on after being become smaller by compression, laser beam focuses on after Multiple Scattering, collimation in laser dissipation spot
Optical wand entrance.
The laser dissipation spot light path 40 includes：First proliferation part 41 and the second proliferation part 43, are static diffusion
Piece, third proliferation part 45 are rotation diffusion wheel assembly；The first lens subassembly 42 is placed at first proliferation part, 41 rear, and second expands
Place the second lens subassembly 44 in 43 rear of separate component；First lens subassembly, 42 and second lens subassembly 44 is a piece of or more
Piece lens combination.
As shown in Figure 2 and Figure 3, third proliferation part 45 is that wafer type dynamic disappears speckle device, can be according to the dissipation spot of system
Demand is set as double-deck or single layer structure form.For the dissipation spot effect for making third proliferation part 45 reach best, the present embodiment
In preferred double-deck diffusion wheel scheme.
Specifically, the double-deck diffusion wheel scheme is：Third proliferation part 45 includes the first diffusion wheel 451 and the second diffusion
Wheel 452, the two are mounted on motor and coaxially connected component 453；Motor and coaxially connected component drive the first diffusion when rotating
Wheel 451 and the second diffusion 452 synchronous rotaries of wheel；The air gap can be stayed among first diffusion wheel 451 and the second diffusion wheel 452；Or
Person first spreads wheel 451 and the second diffusion 452 intermediate gaplesss of wheel are close to place.
Further, the first diffusion wheel 451 is through mode disc diffusion sheet, is divided into three diffusion regions, i.e. feux rouges is spread
Area 451-R, green light diffusion region 451-G and blue light diffusion region 451-B；Second diffusion wheel 452 is also through mode diffusion sheet, is divided into three
A diffusion region, i.e. feux rouges diffusion region 452-R, green light diffusion region 452-G and blue light diffusion region 452-B；The subregion of two diffusion wheels
It corresponds and angle is identical, i.e., feux rouges diffusion region 451-R is identical as the angle of 452-R, and position is identical, and diffusion angle can be arranged
It is identical or different；Green light diffusion region 451-G is identical as the angle of 452-G, and position is identical, diffusion angle may be configured as it is identical or
It is different；Blue light diffusion region 451-B is identical as the angle of 452-B, and position is identical, and diffusion angle may be configured as identical or different.
When red laser array 22 sends out feux rouges, third proliferation part 45 turn to red diffusion region 451-R and
452-R, when green laser array 21 sends out green light, third proliferation part 45 turns to green diffusion region 451-G and 452-
G, when blue laser array 23 sends out blue light, third proliferation part 45 turns to blue diffusion region 451-B and 452-B.
The dissipation spot light path of the present embodiment realizes that dissipation spot is handled using static with dynamic combined mode, dissipation spot effect
It is good, and dynamic diffusion wheel zoning design can respectively be finely adjusted RGB field dissipation spot effect, for ease of understanding, now illustrate
Illustrate, 41 and second proliferation part 42 of the first proliferation part as shown in Figure 1 is all the diffusion sheet that divergence half-angle is 2.2 °；Such as Fig. 2
Shown, feux rouges diffusion region 451-R is 1.6 ° with 452-R divergence half-angles, and green light diffusion region 451-G and 452-G divergence half-angles are
1.5 °, blue light diffusion region 451-B and 452-B divergence half-angles are 1.4 °, Dang Lanchang, green field dissipation spot effect preferably Red Square
When dissipation spot effect is slightly poor, only it need to increase feux rouges diffusion region divergence half-angle.There are two types of realization methods：First, only increasing feux rouges diffusion
The divergence half-angle of area 451-R such as increases to 2 °, or only increases the angle of flare of feux rouges diffusion region 452-R to 2 °；Second is that increasing simultaneously
Add the divergence half-angle of feux rouges diffusion region 451-R and 452-R to 1.8 °.When the dissipation spot effect of blue field or green field is slightly poor, fine tuning side
Formula is identical with this.
Further, as shown in figure 3, third proliferation part 45 may be configured as single layer diffusion wheel form, that is, cancel second and expand
It dissipates wheel 452 and achieves that the function and principle of the two are essentially identical, the main distinction is after cancelling the second diffusion wheel 452, and first expands
Dissipating the divergence half-angle of wheel 451 needs to increase, for example divergence half-angle is increased to original 2 times.
Further, as a kind of simplified structure of the present embodiment, the first diffusion wheel 451 and the second diffusion wheel 452
It is set as no partitioned mode, the diffusion wheel of as single divergence half-angle.
Embodiment two
As shown in figure 4, providing a kind of laser dissipation spot light path and laser projection light-source system, institute in the embodiment of the present invention two
It states laser dissipation spot light path and realizes dissipation spot purpose by the way of two dynamic rotary diffusion wheel apparatus combinations.
Specifically, laser dissipation spot light path 40 includes the first proliferation part 46 in the present embodiment, and lens subassembly 47, second expands
Separate component 45；First proliferation part 46 is the speckle device that dynamically disappears, and the lens subassembly 47 is one or more pieces lens groups
It closes, for collimation or convergent laser light beam；Second proliferation part 45 is dynamically disappear speckle device, technical solution and realization
Function it is identical as third proliferation part 45 in embodiment one.
Specifically, first proliferation part 46 is rotation diffusion wheel construction, double-deck or form of single sheet is may be configured as, to reach
To best dissipation spot effect, the preferred double-deck diffusion wheel in the present embodiment can stay the air gap or tight between two layers of diffusion wheel
It is placed with and sets.
Specifically, as shown in figure 5, the first proliferation part 46 is wafer type dynamic diffusion wheel, including the first diffusion 461 Hes of wheel
Second diffusion wheel 462；Since the laser beam being incident on the first proliferation part 46 is directional light or less parallel light, irradiated area
It is larger, be not suitable for setting subregion, therefore the first diffusion wheel 461 and the second diffusion wheel 462 are both configured to the expansion of single divergence half-angle
Discrete piece, the two diffusion angle can be identical or different.
The present embodiment spreads wheel apparatus using two rotary double-layers and realizes dissipation spot purpose, the first proliferation part 46 and second
45 rotating Vortex of proliferation part reversely rotates, and light beam four times passes through diffusion sheet, i.e. four dynamic dissipation spot diffusion sheets to disappear
Speckle effect is preferable.
Further, as the simplification structure of the present embodiment, there is also following several forms：
When the first proliferation part 46 is using the double-deck diffusion wheel scheme, single layer diffusion wheel side can be used in the second proliferation part 45
Case；
Or when the first proliferation part 46 spreads wheel scheme using single layer, single layer or double can be used in the second proliferation part 45
Layer diffusion wheel scheme.
Embodiment three
As shown in fig. 6, providing a kind of laser dissipation spot light path and laser projection light-source system, institute in the embodiment of the present invention three
It states laser dissipation spot light path and realizes dissipation by the way of a piece of static diffusion sheet and a dynamic rotary diffusion wheel apparatus combination
Spot purpose.
Specifically, laser dissipation spot light path 40 includes the first proliferation part 41 in the present embodiment, the first lens subassembly 42, and the
Two proliferation parts 48, the second lens subassembly 44；First proliferation part 41 is static diffusion sheet；First lens subassembly 42 is one
Piece or multi-disc lens combination, for collimating the laser beam after dissipating；Second proliferation part 48 is the speckle device that dynamically disappears,
Including the first diffusion wheel 481, second spreads wheel 482 and motor and co-axial joint system 483；The second diffusion wheel 482 is close
50 entry position of optical wand, the second lens subassembly 44 are one or more pieces lens combinations, are positioned over after the first diffusion wheel 481, are used
In by diverging after laser beam datum and focus on 50 entry position of optical wand.
Further, as shown in fig. 7, the technical solution of second proliferation part 48 is, the first diffusion wheel 481 is disk
Shape diffusion sheet, for diffusion sheet without subregion, each regional diffusion half-angle is identical；Second diffusion wheel 482 is wafer type diffusion sheet, is divided into green light
Diffusion region 482-G, feux rouges diffusion region 482-R and blue light diffusion region 482-B, concrete function, principle and partitioned mode and embodiment
Second diffusion wheel 452 is identical in one.First diffusion wheel 481 is mounted on motor and co-axial joint system left end, the second diffusion
Wheel 482 is mounted on motor and co-axial joint system right end, and motor and co-axial joint system drive diffusion wheel rotation.
Example IV
As shown in figure 8, a kind of laser dissipation spot light path, including the first proliferation part 401 are provided in the embodiment of the present invention four,
First lens subassembly 402, the second proliferation part 403, the second lens subassembly 404, third proliferation part 405.Wherein first diffusion
Component 401 and the second proliferation part 402 are static diffusion sheet, and third proliferation part 405 is dynamic diffusion sheet, as shown in figure 9, should
Dynamic diffusion sheet forms filter wheel with colour filter, is rotated around axial period.The present embodiment can be applied to LASER Excited Fluorescence powder mode
Projection light source system in.
Laser beam is incident on first proliferation part 401, and through the phase change of laser beam after diffusion sheet, coherence subtracts
It is weak, while laser facula is homogenized；Laser beam after diffusion is collected and is collimated by the first lens subassembly 402, swashing after collimation
Light beam is incident on the second proliferation part 403, and the coherence of laser beam is further weakened；Second lens subassembly 404 is collected into
Laser beam after diffusion simultaneously focuses on the upper of third proliferation part 405, and the diffusion sheet of Periodic Rotating makes the laser beam of transmission produce
Raw random phase difference, greatly reduces the coherence of light beam, to effectively eliminate the effect of the speckle in laser projection system
It answers.
The above is the specific implementation mode of laser dissipation spot light path of the present invention and laser projection light source, described in this patent
Dissipation spot it is not complete eliminate laser speckle, but make the contrast of laser speckle drops to disclosure satisfy that product is answered
With in desired specific range.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, however, it is to be understood that ability
Field technique personnel can be designed that a lot of other modification and implementations, these modifications and implementations will be fallen in the application public affairs
Within the scope and spirit opened.It more specifically, can be to the group of theme combination layout in range disclosed in the present application
A variety of variations and modifications are carried out at component and/or layout.In addition to variations and improvements to the component parts and or layout,
To those skilled in the art, other purposes also will be apparent.
Claims (10)
1. a kind of laser dissipation spot light path, it is characterised in that：It includes diffusion component and for collimating or the lens subassembly of optically focused,
The diffusion component is at least made of two proliferation parts, wherein and at least one proliferation part is the speckle device that dynamically disappears, remaining
Proliferation part is that static state disappears speckle device, and the disappear motion mode of speckle device of the dynamic is period rotation；The lens subassembly
It is set between proliferation part.
2. a kind of laser dissipation spot light path according to claim 1, it is characterised in that：The diffusion component is spread by two
Component or three proliferation part compositions, when the diffusion component is made of two proliferation parts, two proliferation parts are
Disappear speckle device or one of proliferation part of dynamic is that static state disappears speckle device, another proliferation part is that dynamic dissipates
Spot device；When the diffusion component is made of three proliferation parts, two of which proliferation part is that static state disappears speckle device, separately
One proliferation part is the speckle device that dynamically disappears.
3. a kind of laser dissipation spot light path according to claim 1, it is characterised in that：The dynamic speckle device that disappears includes
Diffusion wheel and motor and co-axial joint system, the motor drive diffusion wheel to do period rotary motion.
4. a kind of laser dissipation spot light path according to claim 3, it is characterised in that：The diffusion wheel is by single-layer disc
The double-deck diffusion wheel that the single layer diffusion wheel of shape diffusion sheet composition is either made of two layers of disc diffusion sheet.
5. a kind of laser dissipation spot light path according to claim 4, it is characterised in that：The double-deck diffusion wheel includes first
Diffusion wheel and the second diffusion are taken turns, and the first diffusion wheel and the second diffusion wheel are mounted on the same of motor and co-axial joint system
End, the first diffusion, which is taken turns, is installed using interval between the second diffusion wheel or is close to install.
6. a kind of laser dissipation spot light path according to claim 4, it is characterised in that：The double-deck diffusion wheel includes first
Diffusion wheel and the second diffusion wheel, the first diffusion wheel and the second diffusion wheel are mounted on the difference of motor and co-axial joint system
End, the first diffusion wheel and the second the intermediate of diffusion wheel place lens subassembly.
7. a kind of laser dissipation spot light path according to claim 4, it is characterised in that：The disc diffusion sheet includes
Three diffusion regions of red, green, blue, each diffusion region are set as different expansions according to the dissipation spot difference of red, green, blue laser wavelength
Dissipate half-angle.
8. a kind of laser dissipation spot light path according to claim 6, it is characterised in that：First diffusion is taken turns without subregion,
The divergence half-angle in each region is identical；Second diffusion wheel is divided into three diffusion regions of red, green, blue, and each divergence half-angle for spreading subregion is not
With or it is identical.
9. a kind of laser dissipation spot light path according to claim 1, it is characterised in that：The static state disappear speckle device be it is quiet
State diffusion sheet, material are glass or quartzy thin slice or plastics, single or double diffusing scattering.
10. a kind of laser projection light-source system, it is characterised in that：It includes a kind of laser as described in claim 1-9 is arbitrary
Dissipation spot light path and drive electric power unit, green laser array, red laser array, blue laser array, closing light
Component, look in the distance component and optical wand；The drive electric power unit output pulse signal drives the timesharing successively of red, green, blue laser array
Red, green, blue laser is sent out, and closing light is completed by light-integrating subassembly, then by incident after component realization beam size compression of looking in the distance
Into laser dissipation spot light path, laser beam focuses on optical wand entrance by after multiple diffusion, collimation in laser dissipation spot light path.
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| CN109375382A (en) * | 2018-12-04 | 2019-02-22 | 四川长虹电器股份有限公司 | The dynamic shown for laser projection disappears speckle device |
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