CN105573037B - 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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- CN105573037B CN105573037B CN201610120030.5A CN201610120030A CN105573037B CN 105573037 B CN105573037 B CN 105573037B CN 201610120030 A CN201610120030 A CN 201610120030A CN 105573037 B CN105573037 B CN 105573037B
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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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- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0933—Systems for active beam shaping by rapid movement of an element
-
- 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
-
- 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
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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
-
- 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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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of LASER Light Source, including blue laser and red laser, blue laser and red laser are sent respectively；Also include fluorescent wheel, for being excited to send green fluorescence；The first proliferation part is set in the transmission light path of the laser of at least one color, second proliferation part, two proliferation parts are driven to be moved, and movement locus is different so that laser beam is when sequentially passing through two proliferation parts, the locus scope increase that phase changes, and change after phase between the degree of correlation it is relatively low probability increase, the quantity of random phase pattern can be greatly increased, human eye integral action is utilized, so that speckle effect weakens, the purpose of preferable dissipation spot is reached.The invention also discloses a kind of laser projection device, using the LASER Light Source of above-mentioned technical proposal.
Description
The denomination of invention " a kind of LASER Light Source and laser projection device " proposed this application claims on December 31st, 2015
The priority of Chinese invention application 201511013799.9.
Technical field
The present invention relates to field of projection display, more particularly to a kind of LASER Light Source for being used to project and laser projection device.
Background technology
Laser is a kind of high brightness, and high directivity sends the light source of monochromatic coherent light beam, due to the plurality of advantages of laser,
In recent years by gradually as light source applications in projection display technique field.The high coherence of laser also brings laser projection and shown
When speckle effect, so-called speckle refers to coherent source when irradiating coarse object, the light after scattering, due to its wavelength phase
Together, phase-constant, will produce in space some parts in interference, space interfere it is mutually long, have part interfere phase
Disappear, final result is that occur granular light and dark spot on screen, and these unfocused spots are in human eye
In flicker state, viewing for a long time is also easy to produce dizziness sense of discomfort, more causes the deterioration of projected image quality, reduction user's
Viewing experience.
From the principle for suppressing speckle, generally include, the method with space superposition refines speckle；It is flat with the time
Equal method is superimposed speckle, is weakened using human eye integral action；The coherence of LASER Light Source is reduced with spectrum width is expanded,
And the method for operating frequency superposition weakens the coherence of light source.Prior art uses dissipating for rotation in laser delivery optics
Penetrate piece or diffusion sheet carries out dissipation spot, above-mentioned space superposition and time averaging principle have been mainly used, by the way that light beam is torn open
Point multiple beamlets, speckle is refined, and the speckle pattern of different time points is overlapped homogenized, and passes through the integration in human eye
Effect, desalinates speckle phenomena, weakens.But the hair that the dissipation spot effect of diffusion sheet is set in itself with diffusion sheet in the prior art
Scattered angle is relevant with motion mode, and in actual applications, effect is limited, it is impossible to effectively improve the display quality of projected picture.
The content of the invention
The invention discloses a kind of LASER Light Source and laser projection device, including blue laser and red laser, point
Blue laser and red laser are not sent；Also include fluorescent wheel, the fluorescent wheel is used to be excited to send green fluorescence, by extremely
The first proliferation part and the second proliferation part are set in a kind of few laser delivery optics of color, two proliferation parts are driven to be transported
Dynamic and movement locus is different so that the laser beam phase change for transmiting two proliferation parts is in diversity, is swashed beneficial to improving
The dissipation spot effect of radiant.
The present invention seeks to what is be achieved through the following technical solutions：
A kind of two-color laser light source, including blue laser and red laser, send blue laser respectively and red swashs
Light；Also include fluorescent wheel, for being excited to send green fluorescence；
First proliferation part, the second proliferation part, two diffusions are set in the transmission light path of the laser of at least one color
Part distinguish it is driven moved, and the movement locus of the first proliferation part and the second proliferation part is different；
Preferably, before and after the first proliferation part and the second proliferation part are in the transmission light path of the laser of at least one color
It is disposed adjacent.
Or preferably, the first proliferation part and the second proliferation part are in the transmission light path of the laser of at least one color
It is arranged at intervals.
Preferably, the first proliferation part and the second proliferation part distinguish carry out linear reciprocating vibration driven.
Or preferably, one of the first proliferation part and the second proliferation part are driven to be rotated, another driven
It is dynamic to be swung or translation.
Preferably, the first proliferation part and the second diffusion part direction of vibration are orthogonal.
Preferably, at least one of the first proliferation part and the second proliferation part do aperiodicity motion.
Preferably, the first proliferation part and the second proliferation part do cycle movement.
Preferably, the first proliferation part and the second proliferation part are diffusion sheet or diffusion sheet.
Present invention also offers a kind of laser projection device, including LASER Light Source, ray machine, camera lens, LASER Light Source is ray machine
Illumination is provided, ray machine is modulated to light beam of light source, and output is imaged to camera lens, is projected to projection medium formation shadowgraph
Face, LASER Light Source is the LASER Light Source of any of the above-described technical scheme.
The one or more technical schemes of the embodiment of the present invention, at least have the following technical effect that or advantage：
The LASER Light Source that technical scheme of the embodiment of the present invention is provided, by setting dissipation spot to fill in laser delivery optics
Put, the speckle device that disappears includes two proliferation parts set gradually, and two proliferation parts are respectively under the driving of driving part
Moved, so that compared to the diffusion sheet or diffusion sheet that use a piece of rotary motion in the prior art, laser beam can be through
Double scattering is crossed, effect is homogenized and gets a promotion, and, because the movement locus of two proliferation parts is different, so that two diffusions
The track plane or scope that are surrounded after the movement locus superposition of part are more than the rail of former first proliferation part or the second proliferation part
Mark face or scope, and also greater than the superimposed motion track plane or scope of two proliferation parts with same motion trajectory so that
Laser beam is when sequentially passing through two proliferation parts, the locus scope increase that phase changes, and the phase after changing
Position between the degree of correlation it is relatively low probability increase, that is, produce random phase probability increase, random phase figure can be greatly increased
The quantity of sample, utilizes the integral action of human eye so that speckle effect weakens, and has reached the purpose of preferably dissipation spot, Neng Gouti
For the illumination of high-quality LASER Light Source, meanwhile, the decrease of speckle effect improves the display quality of projected picture.
The laser projection device that technical scheme of the embodiment of the present invention is provided, using above-mentioned LASER Light Source scheme, can subtract
The speckle effect of weak projected picture, improves the display quality of projected picture, strengthens the competitiveness of product.
Brief description of the drawings
Fig. 1 is LASER Light Source configuration diagram in the embodiment of the present invention one；
Fig. 2 is dissipation spot apparatus structure schematic diagram in the embodiment of the present invention one；
Fig. 3 is the speckle device motion mode schematic diagram that disappears in the embodiment of the present invention one；
Fig. 4 is the speckle device fitting movement locus schematic diagram that disappears in the embodiment of the present invention one；
Fig. 5 A are the another fitting movement locus schematic diagram of speckle device that disappears in the embodiment of the present invention one；
Fig. 5 B are further fitted movement locus schematic diagram for the speckle device that disappears in the embodiment of the present invention one；
Fig. 6 is LASER Light Source configuration diagram in the embodiment of the present invention two；
Fig. 7 A are the motion mode schematic diagram of speckle device one that disappears in the embodiment of the present invention three；
Fig. 7 B are the another motion mode schematic diagram of speckle device that disappears in the embodiment of the present invention three；
Fig. 8 is LASER Light Source configuration diagram in the embodiment of the present invention three；
Fig. 9 is LASER Light Source configuration diagram in the embodiment of the present invention four；
Figure 10 is LASER Light Source configuration diagram in the embodiment of the present invention five；
Figure 11 is laser projection device structural representation in the embodiment of the present invention six.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step it is described in detail, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
Below in conjunction with accompanying drawing, technical scheme provided in an embodiment of the present invention is described in detail.
Embodiment one
The embodiment of the present invention one provides a kind of LASER Light Source, as shown in figure 1, the present embodiment one discloses a kind of double-colored sharp
Radiant, laser specifically includes blue laser 11 and red laser 12, and both are arranged vertically, and blue laser is sent respectively
And red laser, wherein blue laser is used as excitation source.And, fluorescent wheel 20 is provided with green on the substrate of fluorescent wheel 20 glimmering
Light powder, excites for Stimulated Light and sends green fluorescence, so that and blue laser, red laser formation three primary colours.Wherein, it is red to swash
The speckle device 30 that disappears is provided with transmission light path after light and blue laser closing light, the speckle device 30 that disappears includes the first proliferation part
31 and second proliferation part 32, it is disposed adjacent before and after two proliferation parts.Driven as shown in Fig. 2 the speckle device 30 that disappears also includes first
Dynamic component 33, the second driving part 34, the first proliferation part 31 and the second proliferation part 32 are simultaneously and respectively by the first drive division
The driving part 34 of part 33 and second driving moved, and the first proliferation part 31 and the second proliferation part 32 movement locus not
Together.
Specifically, in the present embodiment light source, the blue laser and red laser 12 that blue laser 11 is sent are sent
Red laser, first pass around shrink beam part carry out beam shaping, after the relatively large spot that laser is sent is reduced just profit
In being transmitted in optical mirror slip, light treatment effect is improved, and, the more direct purpose of beam shaping is to meet fluorescent wheel to be excited
Required spot size, such as in 0.8mm diameters or so.Conventional pack part includes condenser lens or telescopic system
（It is made up of a piece of convex lens and a piece of concavees lens）, in the present embodiment using telescopic system.Specifically, first passed through per road laser
Cross a piece of big convex lens and carry out convergent beam, by the compound direction identical of closing light part 40 all the way, then by a piece of recessed
Mirror.Specifically, closing light part 40 can be dichroscope, be transmissive to blue laser, and reflect red laser, or for
The speculum group unit at interval, hollow out or transparent region allow blue laser to transmit, reflecting optics reflection red laser, so that two
The mutually perpendicular light beam in road becomes light all the way and is transmitted.Due to being provided with the first proliferation part 31 in the transmission of two-way closing light
The speckle device 30 that disappears constituted with the second proliferation part 32, can light the period according to blue laser and red laser,
Dissipation spot is carried out when blue laser or red laser transmit the two proliferation parts.
Disappear speckle device 30 specific work process it is as follows：As shown in Fig. 2 the speckle device 30 that disappears also includes control unit
35, control unit 35 carries out signal control to the first actuated components 33 and the second actuated components 34 respectively, according to signal output pair
Answer ground driving current, such as different PWM ripples, or the control of corresponding software program so that the first driving part 33 and second
Driving part 34 drives corresponding proliferation part to do different motions.Control unit 35 can be CUP controllers, while being driven for two
Dynamic component output control signal.
Due to being set gradually before and after the first proliferation part 31 and the second proliferation part 32, so that blueness or red laser light beam
Two proliferation parts can be passed sequentially through, by spreading twice, that improves light beam homogenizes degree.Because light beam first passes through the first expansion
After separate component 31 spreads, degree of divergence increase, it is preferable that the face type of the second proliferation part 32 is slightly larger than the first proliferation part 31,
So as to all receive the laser beam in certain degree of divergence from the outgoing of the first proliferation part 31.
And, the first proliferation part 31 and the second proliferation part 32 are simultaneously and respectively by the first driving part 11 and described the
The driving campaign of two driving parts 21, so that laser beam passes sequentially through the proliferation part of two motion states, motion
Proliferation part compared to static setting proliferation part except change space phase in addition to, additionally it is possible to make laser beam produce it is multiple
Random phase pattern, is conducive to improving the dissipation spot effect of laser；And in embodiments of the present invention, the He of the first proliferation part 31
The movement locus of second proliferation part 32 is different, the track plane or scope surrounded after the movement locus superposition of two proliferation parts
More than former first proliferation part or the track plane or scope of the second proliferation part, and also greater than two with same motion trajectory
The superimposed motion track plane or scope of proliferation part, because two proliferation parts are random for the change of laser beam phase
, this causes laser beam when sequentially passing through two proliferation parts, in the track plane or scope of larger area, phase hair
The raw locus scope increase changed, the less probability increase of the degree of correlation between phase after change, that is, produce random phase
The probability increase of position, can greatly increase the quantity of random phase pattern, utilize the integral action of human eye so that speckle effect subtracts
It is weak, reach the purpose of preferable dissipation spot.
Specifically, the first proliferation part 31 and the second proliferation part 32 can be diffusion sheet or diffusion sheet, wherein, scattering
The incidence surface of piece or diffusion sheet sets scattering micro-structural, or, the incidence surface and exiting surface of diffusion sheet or diffusion sheet are respectively provided with scattered
Penetrate micro-structural, it is possible to increase laser beam passes through the scattering degree after the part.And, the first proliferation part 31 and the second diffusion
Part 32 can be circle, or rectangle, or ellipse, as long as beneficial to the laser light for all receiving front end incidence
Beam, is not specifically limited to shape herein.
First actuated components 33 and the second actuated components 34 can be magnet coil or piezoelectric ceramics, and pass through a folder
Hold structure（Not shown in figure）, such as carriage framework is connected with the above-mentioned proliferation part 32 of first proliferation part 31 and second, and
It is controlled by control unit 35, with the change of driving current, the driving of different motion track is carried out to proliferation part.
It should be noted that movement locus is represented by the direction of motion, forms of motion and motion amplitude.Above-mentioned motion rail
Mark difference refers to any difference in the direction of motion, three factors of forms of motion and motion amplitude, or appoints both different, Huo Zhesan
Person's different situation.The first diffusion sheet 31 and a variety of different motion track combination sides of the second diffusion sheet will be introduced respectively below
Formula.
And, in the specific implementation, the first proliferation part 31 and the second proliferation part 32, in order that the light of proliferation part is saturating
Cross that rate is higher, the incident direction of correspondence laser, the first proliferation part 31 and the second proliferation part 32 are in entering perpendicular to laser
Penetrate in the plane in direction and moved.
And, it will be appreciated by those skilled in the art that based on above-mentioned setting, when the first proliferation part and the second proliferation part
It is disposed adjacent, and, then first proliferation part and second diffusion consistent through the transmission direction of the laser beam of two proliferation parts
The plane of movement of part is parallel to each other.When the first proliferation part and the second proliferation part are arranged at intervals, applied to specific dissipation
When in spot light path, due to the change in laser optical path direction, although the plane of movement of the first proliferation part and the second proliferation part with
Laser optical path transmission direction keeps vertical relation, but two planes may be parallel, it is also possible to which at an angle, this sends out with laser optical path
The angle of raw turnover is relevant, and the effect of two proliferation parts superposition dissipation spot does not have larger difference.
In embodiments of the present invention, it is brief description, is disposed adjacent with the first proliferation part and the second proliferation part, is moved
Plane is introduced exemplified by being parallel to each other.
As shown in figure 3, the incident direction of correspondence laser, the first proliferation part 31 and the second proliferation part 32 are with laser light incident
The optical axis in direction is Z axis, sets up coordinate system, the first proliferation part 31 and the second proliferation part 32 respectively along perpendicular to Z axis and
Two plane a being parallel to each other, b are moved.This setup can make proliferation part with maximum effective area to blueness
Or red laser light beam is transmitted, the light diffuser efficiency to laser beam is improved.
On plane a, b, the first proliferation part 31 and the second proliferation part 32 distinguish carry out linear reciprocating vibration driven.
Wherein, the direction of vibration of two linear reciprocating vibrations is different, as shown in figure 3, the first proliferation part 31 does linear past along movement locus 1
Multiplex vibration, the second proliferation part 32 does linear reciprocating vibration along movement locus 2, and the extended line of movement locus 1 and movement locus 2 is in
Angle, angle can be acute angle or right angle.
When angle is right angle, i.e., the direction of motion of two proliferation parts is orthogonal, can be specifically, the first proliferation part
31 is of reciprocating vibration along the progress of horizontal X direction of principal axis, and the second proliferation part 32 is of reciprocating vibration along the progress of vertical Y direction, so that both
Movement locus extended line be mutually perpendicular to.It is of course also possible to be the first proliferation part 31 along vertical Y direction, the second diffusion part
Part carries out linear reciprocating vibration along horizontal X direction of principal axis, and effect is similar under both of these case, does not limit specific performance.
The linear reciprocating vibration of two proliferation parts in above-mentioned two direction can for uniform motion or it is non-at the uniform velocity
Motion.
The amplitude of the linear reciprocating vibration of two proliferation parts in above-mentioned two direction can be with identical, can also be different, shakes
Width scope is preferably greater than or equal to 0.1mm.
And, the linear reciprocating vibration of two proliferation parts in above-mentioned two direction can be periodic, Huo Zheye
Can one of linear reciprocating vibration be periodic, another is aperiodicity, or, both parts it is linear reciprocal
Vibration is acyclic.The random motion mode of aperiodicity can increase beam phase change randomness, reduce because
The hot spot pattern of the stabilization caused for cycle movement.
3 and Fig. 4 describes the motion process of the first proliferation part 31 and the second proliferation part 32 in detail below in conjunction with the accompanying drawings.
Linear reciprocating vibration, and two are carried out along orthogonal both direction with the first proliferation part 31 and the second proliferation part 32
The amplitude size of individual linear oscillator is identical, and exemplified by being uniform motion, then in the first proliferation part 31 and the second diffusion part
During part 32 is moved, the first proliferation part 31 and the respective movement locus of the second proliferation part 32 are projected in one
In individual plane, the projection plane is perpendicular to laser light incident optical axis direction, and the movement locus after fitting is also projected in same plane,
So as to which along the Z axis of laser beam incident direction, the movement locus of the respective move contrail fitting formation of two parts is as shown in Figure 4.
Wherein origin O is the midpoint of the first proliferation part 31 and the linear reciprocating vibration of the second proliferation part 32, it is assumed that two linear oscillators
Amplitude size is R, and R is taken more than 0.1mm value ranges, with the increase of R values, is conducive to dissipation spot still can be to increase hot spot face
Product.A1, a2, a3, b1, b2, b3, c1, c2, c3 represent the first proliferation part 31 and the second proliferation part 32 in each autokinesis respectively
The incident point of different spatial in track and in fitting movement locus.
And, the frequency of linear oscillator is simultaneously not specifically limited, and is needed according to product and hardware driving ability, the present invention
Embodiment preferably takes the frequency of linear oscillator to be 60 ~ 240HZ.It will be appreciated by those skilled in the art that vibration frequency is similarly
50HZ or other numerical value can be taken.
According to diagram, the first proliferation part 31 is moved in a1 to a3 scopes along movement locus 1, a1 or a3 to center origin O
Distance be R, the second proliferation part 32 moves in b1 to b3 scopes along movement locus 2, and b1 or b3 to center origin O distance are
R。
So as to which when the first proliferation part 31 moves to a1 points, and the second diffusion motion part 20 is located at center origin O positions
When, i.e., at the peak swing position of left side, then it is at a2 positions, i.e., to be shaken along X-axis level to the one of the second from left point to be fitted movement locus point
At width position.When the first proliferation part 31 moves to a2 points, and the second diffusion motion part 20 is when moving to b2 positions, then is fitted
Movement locus point is at c2 positions.
Similarly, when the first proliferation part 31 is moved at center origin O positions, and the second diffusion motion part 20 is moved to
During b1 positions, i.e., along at the upward peak swing position of Y direction, then it is at b2 positions to be fitted movement locus point.When the first diffusion
Part 31 moves to a1 or a3 points, and the second diffusion motion part 20 when moving to b1 positions, then it is c3 to be fitted movement locus point
Or at c1 positions.
So as to which the movement locus of the first proliferation part 31 and the second proliferation part 32 forms as shown in Figure 4 after being fitted
Circle, i.e. movement locus is represented by：X2+Y2=c2, wherein, X represents the point in movement locus 1, and Y represents movement locus 2
In point, C=R, the area or scope that this movement locus is surrounded represent the first proliferation part 31 and the second proliferation part 32
Can to light beam carry out phase change locus range size, due to two proliferation parts for the change of beam phase be with
Machine, when the locus scope that phase can change is bigger, the probability that can produce incoherent random phase just increases
Greatly, so that the quantity of the independent random phase pattern finally produced will be greatly increased, the integral action of human eye, speckle effect are utilized
It is able to should weaken significantly.
And, when the first proliferation part 31 is identical with the forms of motion of the second proliferation part 32, such as in above-mentioned Fig. 2 examples
Do linear reciprocal movement, but the direction of motion it is in a certain angle when, especially in perpendicular angle, two proliferation parts are to light beam
The probability enhancing of the random phase of generation.Because, the change due to diffusion sheet or diffusion sheet to beam phase be it is random,
When orthogonal thereto direction is moved, multiple phase changes are produced in each direction, it is former according to Vector operation and probability statistics
Reason, the degree of correlation between phase after these changes is relatively low compared to the degree of correlation along same direction of movement phase, in other words phase
Guan Du is larger for 0 likelihood ratio, so that the probability that random phase is produced is improved, the quantity of random phase pattern also just increases
Plus, so that, when the first proliferation part 31 and the second proliferation part 32 carry out linear oscillator simultaneously along orthogonal both direction, energy
The enough quantity by increasing random phase pattern carries out preferable dissipation spot.
In another specific implementation, the direction of motion of the first proliferation part 31 and the second proliferation part 32 is still orthogonal, but
One of motional amplitude difference, or both is uniform motion, and another is that one of non-uniform movement, or both is periodically to transport
It is dynamic, it is another to be moved for aperiodicity, or be aperiodicity motion, then the movement locus face after the fitting of two proliferation parts then may be used
Can not be disc, such as may be ellipsoid as shown in Figure 5A, or the face that surrounds of the irregular curve shown in Fig. 5 B or
The track plane of other shapes.
From the foregoing it will be appreciated that the track plane or scope of fitting movement locus represent the locus that phase can change
Range size, therefore the track plane area of the first proliferation part, the second proliferation part motion fitting formation is bigger, so that phase can
Will be bigger with the locus scope changed, producing the probability of the relatively low phase of multiple degrees of correlation will increase, more
Multiple independent random phase patterns are easily formed, beneficial to eliminating coherence.
The first proliferation part 31 and the second proliferation part 32 are illustrate only along orthogonal in Fig. 4 of the embodiment of the present invention
Direction, and amplitude size is identical, the circular trace face of formation is fitted in the case of uniform motion, it is not specific herein to limit first
The direction of motion of proliferation part and the second proliferation part, amplitude size, moving periodicity, as long as desired area foot can be formed
Enough big track planes, are not limited merely to the shape of track plane, equally can play preferable eliminating coherence for laser beam
Effect, weakens the speckle phenomena of projected picture.
Analyzed from the above, after the speckle device 30 that disappears, the coherence of red laser or blue laser subtracts
It is weak, so that beneficial to the display quality for improving projected picture.
Blue laser or red laser after two proliferation parts is sequentially passed through to reenter after convex lens 21 enter line convergence
Penetrate fluorescent wheel 20.In the present embodiment one, fluorescent wheel 20 is transmission-type fluorescent wheel, with transparency carrier, is provided with transparency carrier
Dichroic film is provided with the outside of green phosphor layer, green phosphor layer, can be anti-reflection to laser, and green fluorescence is carried out anti-
Penetrate, so that green fluorescence can be from the back side outgoing of fluorescent wheel 20.Transmission area is additionally provided with the transparency carrier of fluorescent wheel 20, specifically
Ground, because red laser and blue laser are incident on fluorescent wheel real estate, the transmission area specifically includes red transmission area
With blue transmission area, for transmiting blue laser and red laser successively with the rotation of fluorescent wheel, so that from fluorescent wheel 20
The back side can timing input red, green, blue three primary colours light.
Three primary colours light re-shoots optical wand 50 after the collimation lens set 22 at the back side of fluorescent wheel 20 is collimated, and optical wand 50 belongs to
It is conventional even smooth part in a part for ray machine.Because there is optical wand the three primary colours light after ranges of incidence angles requirement, collimation to exist
Generally also needed to before incident optical wand by a piece of convergent lens 51, to reduce the incident angle of light beam, improve light beam incidence effect
Rate.
Two-color laser light source provided in an embodiment of the present invention, due to the light exported after blue laser and red laser closing light
The speckle device that disappears is provided with road, so as to which efficient eliminating coherence can be carried out to blue laser and red laser so that double
The projected picture speckle effect of color laser light source projects formation weakens significantly, improves image display quality, enhances product competing
Strive power.
Embodiment two
The embodiment of the present invention two provides another two-color laser light source, as shown in fig. 6, including blue laser group 11,
Red laser group 12, is set up in parallel, and blue laser and red laser are sent respectively.Blue laser and red laser first pass through prestige
Remote mirror system 13,14 carries out beam shaping, respectively after shrink beam, blue laser incident fluorescence wheel 20, red laser then independent one
Road is exported to closing light part 40.In embodiments of the present invention, fluorescent wheel 20 is transmission-type fluorescent wheel, including phosphor region is coated with
Green emitting phosphor, and transmission area, for transmitting blue laser, so that with the rotation of fluorescent wheel, green fluorescence and blueness swash
Light is collimated successively through the outgoing of the fluorescent wheel back side by the collimation lens set at the back side of fluorescent wheel 20.Turned according to optical path direction
Needs are changed, collimated blue laser and green fluorescence reflexes to closing light part 40 through plane mirror, it is preferable that closing light portion
Part 40 is dichroscope, can be with transmitting blue laser and green fluorescence, and reflects another road red laser, so that three kinds of colors
Light carries out closing light and transmitted in the same direction.
After the actinic light of three kinds of colors, the speckle device 30 that disappears is provided with the light path of output, specifically, disappear speckle device
30 structure and the course of work can be with the speckle device 30 that disappears described in be the same as Example one, including two respectively along orthogonal two
Individual direction, the proliferation part for carrying out linear reciprocating vibration, can reach identical or approximate dissipation spot effect, can also be with implementation
It is different in example one.
In embodiments of the present invention, the first proliferation part 31 of the speckle device 30 that disappears and the fortune of the second proliferation part 32 are constituted
Dynamic rail mark it is different specifically, one of two proliferation parts one of them it is driven rotated, it is another it is driven swung or
Translation, because the forms of motion of two proliferation parts is different, both inevitable movement locus are different, so that two movement locus are folded
Plus the movement locus scope that is formed of fitting is more than the movement locus scope of any proliferation part in two proliferation parts, also greater than doing
Movement locus scope after the fitting of two proliferation parts of same movement so that and change after phase between the degree of correlation compared with
Low probability increase, that is, produce the probability increase of random phase, can produce multiple independent random phase patterns.
Specifically, as shown in Figure 7 A, the first proliferation part 31 is in the plane a perpendicular to Z axis, along the vertical flat of proliferation part
Separated time or a certain side（When proliferation part is square part）Oscillating motion is done, the second proliferation part 32 is perpendicular to Z axis
In plane b, rotated along the center of proliferation part.
Or, as shown in Figure 7 B, the first proliferation part 31 does flat in the plane a perpendicular to Z axis along X-axis horizontal direction
Dynamic motion is vibrated back and forth, and the second proliferation part 32 does along the center of proliferation part and rotated in the plane b perpendicular to Z axis
Motion.
Or first proliferation part 31 rotate, the second proliferation part 32 is swung or translation.
The rotation of the above-mentioned proliferation part 32 of first proliferation part 31 and second or the frequency of swing or translational motion are preferably
Also it is 60HZ ~ 240HZ.
Wherein, the amplitude of swing is in more than 0.1mm.
So as to due to the difference of two proliferation part forms of motion so that movement locus is different, when laser beam is saturating successively
When crossing the two proliferation parts, on the one hand two proliferation parts can produce multiple space phases, the opposing party in a different direction
Face, produce space phase between the degree of correlation with motion mode and the difference of space scope, the degree of correlation it is relatively low or for 0 it is general
Rate increase, so as to produce multiple separate random phase patterns, weakens the coherence of light beam, improves dissipation spot effect
Really.
In the embodiment of the present invention three, the swing or translation of the first proliferation part 31, and the second proliferation part 32 rotation
Motion, can be cycle movement, or aperiodicity is moved, and can be uniform motion, or non-uniform movement,
Wherein, above-mentioned specific motion process parameter, influences whether the shape of final fitting path curves, so that curve surrounds rail
The size of mark area, the fitting movement locus face is preferably symmetric figure or centrosymmetric image, the track plane of symmetric figure
More locus can be provided, and it is relatively uniform, so as to be conducive to the increase of phase change species and be uniformly distributed.
So as in the embodiment of the present invention, by the closing light output light path of blue laser, red laser and green fluorescence
There is provided the speckle device 30 that disappears, the first proliferation part 31 is different with the forms of motion of the second proliferation part 32, cause movement locus
Difference, as the above analysis, can similarly reach preferably dissipation spot effect, therefore, the embodiment of the present invention three is provided
Double-colored light source, also can carry out efficient eliminating coherence to blue laser and red laser so that two-color laser light source projects
The projected picture speckle effect of formation weakens significantly, improves image display quality, enhances product competitiveness.
Embodiment three
There is provided another two-color laser light source in the embodiment of the present invention three, as shown in figure 8, including blue laser
11, red laser 12, both are set up in parallel, and carry out shrink beam respectively through shrink beam part 13,14.Wherein, blue laser is made
For excitation light source, fluorescent wheel 20 is incident to, red laser is individually all the way.
In embodiments of the present invention, dissipation spot part includes the first proliferation part 31 and the second proliferation part 32.
In embodiments of the present invention, fluorescent wheel 20 is reflective fluorescent wheel, including phosphor region and transmission area, and phosphor region is at least
It is coated with green emitting phosphor.Fluorescent wheel front is provided with collimation lens set 22, and the back side is provided with blue light relaying loop 21, blue light
Include another collimation lens set, multi-disc speculum, condenser lens, and a piece of dichroscope 41 successively after loop 21.
When blue laser passes through closing light part 40, when being incident to the phosphor region of fluorescent wheel 20, generation green fluorescence is excited.It is green
Color fluorescence is reflected from the positive outgoing of fluorescent wheel 20 by aluminium base, and the collimated incident of collimated lens group 22 is to closing light part 40, closes
Light part 40 being capable of reflection green fluorescence.
The human eye of speckle effect susceptibility in view of to(for) red laser is higher than for blue laser, it is therefore preferred that
The first proliferation part 31 is provided with the transmission light path of red laser, so that red laser is passing through the shrink beam of telescopic system 14
Diffusion dissipation spot for the first time is carried out by the first proliferation part again afterwards, the first proliferation part 31 can be linear oscillator, translation, pendulum
Dynamic or rotary motion, can carry out dissipation spot to red laser.By the first proliferation part 31 project after reach speculum 15, to light
Shu Fangxiang is transferred, and dichroscope 41 is reached after reflection, and dichroscope 41 can reflect blue laser, red laser is entered
Row transmission, so that the laser of two kinds of colors enters directive closing light part 40, specifically, closing light part plated film is transmissive to red
Laser and blue laser, and reflection green fluorescence.After the closing light of closing light part 40, three coloured light is exported in same direction, and is passed through
A piece of convex lens reach the second proliferation part 32 after assembling, and final incidence optical wand 50 carries out even after the diffusion of the second proliferation part
Change output.
Specifically, the second proliferation part 32 is different from the movement locus of the first proliferation part 31, can be forms of motion not
Together, or identical forms of motion, the direction of motion is different with motion amplitude, or can be with forms of motion, and the direction of motion is identical only
Motion amplitude is different.
In embodiments of the present invention, red laser can sequentially pass through the first proliferation part 31 and the second proliferation part 32,
The effect of dissipation spot can be improved.Blue laser can also function to certain dissipation by the diffusion of the second proliferation part 32
Spot is acted on, and above-mentioned set-up mode can be reached to the balance of the speckle effect of two kinds of color laser, is adapted to the vision of beholder and is needed
Ask.
The first proliferation part 31 and the second proliferation part 32 can be a kind of described using embodiment in embodiments of the present invention
Scheme, it would however also be possible to employ the scheme described in embodiment two, the present invention is real unlike embodiment one or embodiment two
Apply in a scheme, the first proliferation part 31 and the second proliferation part 32 are separately positioned in other words, it is preferable that two to be arranged at intervals
Diffusion chip part may be contained within the imaging surface of system optics, it is possible to increase the efficiency of dissipation spot.Specifically two proliferation parts disappear
The working process and principle of speckle can be found in described in embodiment one or embodiment two, will not be repeated here.
Example IV
In the embodiment of the present invention four, two parts of the speckle device 30 that disappears, the first proliferation part 31 and the second diffusion part
Part 32 is to be arranged at intervals or separately positioned, in similar embodiment three, i.e., is additionally provided with other between two proliferation parts
Optical component.Specifically, as shown in figure 9, the first proliferation part 31 is arranged at the output after blue laser and red laser closing light
In light path, and before incident fluorescence wheel 20.And the second proliferation part 32 is arranged at blue laser and red laser and green is glimmering
Light enters before optical wand 50, can be located at after convergent lens 51, bar inlet, such as Fig. 9 show, can also be located at convergent lens
Before 51（Not shown in figure）.
Specifically, the structure of the first proliferation part 31 and the second proliferation part 32, forms of motion can use embodiment one
In or using the scheme of the speckle device that disappears described in embodiment two.Exist with scheme identical content in embodiment one or embodiment two
This is repeated no more.
From unlike embodiment one, embodiment two, the first proliferation part 31 and the second proliferation part 32 no longer concentrate phase
Neighbour is set, and multiple optical components are additionally provided between two parts, and the transmission direction of laser beam there occurs 90 degree of turnovers, therefore
The plane of movement of first proliferation part 31 and the second proliferation part 32 is no longer parallel to each other, but the plane of movement of each proliferation part is equal
Keep vertical with the incident light axis direction of laser beam, and the movement locus of two proliferation parts is different, therefore, the embodiment of the present invention
In the first proliferation part 31 and the second proliferation part 32 still be able to reach and dissipated with identical in embodiment one or embodiment two
Spot effect, its operation principle and process will not be repeated here.
Embodiment five
The embodiment of the present invention five provides another two-color laser light source, as shown in Figure 10.
In embodiments of the present invention, the two-color laser device still constituted using blue laser 11 and red laser 12, with
Identical is in embodiment three or example IV, between the first proliferation part 31 and the second proliferation part 32 of the speckle device that disappears are also
It is different from the position relationship being disposed adjacent before and after embodiment one, embodiment two every setting.
It is similar with embodiment three, the first proliferation part 31 is provided with the transmission light path of red laser, so that red swash
Light is carrying out diffusion dissipation spot, and directive closing light portion for the first time by the first proliferation part again after the shrink beam of telescopic system 14
Part 40, concretely dichroscope, dichroscope is reflected red laser.
Blue laser is incident glimmering after convergent lens further reduces facula area after the shrink beam of telescopic system 13
Halo 20, in embodiments of the present invention, fluorescent wheel 20 use transmission-type fluorescent wheel, and transmission-type fluorescent wheel is saved than reflective fluorescent wheel
The loop of blue laser has been omited, and transmission-type fluorescent wheel is to carry out closing light by back side output, and reflective fluorescent wheel needs
Fluorescent wheel front sets closing light eyeglass, carries out closing light to the blue laser that the fluorescence of reflection and turnover are returned, thus with the present invention
Embodiment three is compared, and the embodiment of the present invention five can cause optical mirror slip quantity to reduce using transmission-type fluorescent wheel, light source framework
Succinctly.Blue laser and green fluorescence can be sequentially output through the back side of transmission-type fluorescent wheel 20.
Blue laser and green fluorescence it is collimated and reflection after be also incident to dichroscope, transmitted by dichroscope.Finally
Red laser, blue laser and green fluorescence, which are realized, is additionally provided with the second proliferation part 32, first in closing light, closing light output light path
The proliferation part 32 of proliferation part 31 and second constitutes the speckle device 30 that disappears.
In the embodiment of the present invention five, the structure and forms of motion of the first proliferation part 31 and the second proliferation part 32 can be with
Embodiment one or embodiment two or embodiment three or example IV scheme are identical, and its operation principle and process are repeated no more.
In embodiments of the present invention, similar with embodiment three, red laser can sequentially pass through the first proliferation part 31
With the second proliferation part 32, it is possible to increase the effect of dissipation spot.Blue laser can be made by the diffusion of the second proliferation part 32
Acted on certain dissipation spot is also functioned to, above-mentioned set-up mode can be reached to the balance of the speckle effect of two kinds of color laser,
It is adapted to the visual demand of beholder.
, can be in incident fluorescence wheel in order to improve the dissipation spot effect of blue laser as the remodeling of the embodiment of the present invention
A piece of static diffusion sheet is set before 20, can be specifically located between fluorescent wheel front and condenser lens, static diffusion sheet
On the one hand the space phase of blue laser can be increased, is acted on certain dissipation spot, while can be carried out to laser beam
Diffusion is homogenized, and improves the uniformity of optical density distribution, improves the conversion efficiency of fluorescence excitation.
Embodiment six
The embodiment of the present invention six provide a kind of laser projection device, can be laser movie theatre either laser television or
Other laser projection instruments, as shown in figure 11, including LASER Light Source 1, ray machine 2, camera lens 3, LASER Light Source 1 is that ray machine 2 provides photograph
Bright, ray machine 2 is modulated to light beam of light source, and export be imaged to camera lens 3, be finally projected to project medium such as screen or
Display picture on person's wall.Specifically, camera lens 3 is ultrashort zoom lens, and the laser projection device is ultrashort out-of-focus projection's equipment.Its
In, the LASER Light Source in the present embodiment six can be any described LASER Light Source into embodiment five of above-described embodiment one, its
Identical content components are repeated no more, and laser projection device of the embodiment of the present invention can weaken the speckle effect of projected picture, are improved
The display quality of projected picture, strengthens the competitiveness of product.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code
Usable storage medium（Including but not limited to magnetic disk storage and optical memory etc.）The shape of the computer program product of upper implementation
Formula.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of LASER Light Source, including blue laser and red laser, send blue laser and red laser respectively；Also wrap
Fluorescent wheel is included, the fluorescent wheel is used to be excited to send green fluorescence；
Characterized in that,
Two diffusion parts of first proliferation part and the second proliferation part are set in the transmission light path of the laser of at least one color
Part, and two proliferation parts distinguish it is driven moved, and the movement locus of two proliferation parts is different, so that laser
Light beam can pass through two proliferation parts successively.
2. LASER Light Source according to claim 1, it is characterised in that first proliferation part and second diffusion part
Part is front and rear in the transmission light path of the laser of at least one color to be disposed adjacent.
3. LASER Light Source according to claim 1, it is characterised in that first proliferation part and second diffusion part
Part is in the middle of the transmission light path of the laser of at least one color every setting.
4. LASER Light Source according to claim 1, it is characterised in that first proliferation part and the second proliferation part point
Carry out linear reciprocating vibration not driven.
5. LASER Light Source according to claim 1, it is characterised in that first proliferation part and second diffusion part
One of part is driven to be rotated, another driven to be swung or translation.
6. LASER Light Source according to claim 4, it is characterised in that first proliferation part and second diffusion part
Direction of vibration is orthogonal.
7. the LASER Light Source according to claim 4 or 5, it is characterised in that at least described first proliferation part and described
One of two proliferation parts do aperiodicity motion.
8. the LASER Light Source according to claim 4 or 5, it is characterised in that first proliferation part and described second expands
Separate component does cycle movement.
9. LASER Light Source according to claim 1, it is characterised in that first proliferation part and the second proliferation part are equal
For diffusion sheet or diffusion sheet.
10. a kind of laser projection device, including LASER Light Source, ray machine, camera lens, the LASER Light Source provide photograph for the ray machine
Bright, the ray machine is modulated to light beam of light source, and output is imaged to the camera lens, is projected to projection medium formation projection
Picture, it is characterised in that the LASER Light Source is any described LASER Light Sources of power 1-9.
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| CN201610120030.5A CN105573037B (en) | 2015-12-31 | 2016-03-03 | A kind of LASER Light Source and laser projection device |
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| CN201610120030.5A CN105573037B (en) | 2015-12-31 | 2016-03-03 | A kind of LASER Light Source and laser projection device |
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| CN201610120030.5A Active CN105573037B (en) | 2015-12-31 | 2016-03-03 | A kind of LASER Light Source and laser projection device |
| CN201610120034.3A Active CN105573039B (en) | 2015-12-31 | 2016-03-03 | A kind of LASER Light Source and laser projection device |
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| US9979939B2 (en) | 2016-06-30 | 2018-05-22 | Hisense Co., Ltd. | Light source assembly and laser projector |
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| CN107885021A (en) * | 2016-09-30 | 2018-04-06 | 海信集团有限公司 | A kind of LASER Light Source and laser projection device |
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| CN108663353B (en) * | 2017-03-31 | 2020-10-30 | 苏州星帆华镭光电科技有限公司 | Vibration light path component and laser-induced breakdown spectrometer with same |
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| CN105629647A (en) | 2016-06-01 |
| CN105573039A (en) | 2016-05-11 |
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| CN105573039B (en) | 2017-09-01 |
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Effective date of registration: 20180509 Address after: 266599 No. 218, Qian Wan Gang Road, Huangdao District, Qingdao, Shandong. Patentee after: Qingdao Hisense laser display Limited by Share Ltd Address before: 266100 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province, No. 151 Patentee before: Hisense Group Co., Ltd. |
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