CN109031687A - A kind of regulating system and method for dissipation spot laser light source - Google Patents
A kind of regulating system and method for dissipation spot laser light source Download PDFInfo
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- CN109031687A CN109031687A CN201810930432.0A CN201810930432A CN109031687A CN 109031687 A CN109031687 A CN 109031687A CN 201810930432 A CN201810930432 A CN 201810930432A CN 109031687 A CN109031687 A CN 109031687A
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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
- G03B21/208—Homogenising, shaping of the illumination light
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- Optics & Photonics (AREA)
- Lasers (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention discloses a kind of regulating system of dissipation spot laser light source, the dissipation spot laser light source includes laser and the dissipation spot device positioned at the laser emitting optical path, the dissipation spot device includes 180 the first wedge and the second wedge for disappearing symmetrical fitting setting each other, the regulating system includes: data processing module, enter after dissipation spot device for obtaining the laser beam that laser is emitted according to the current relative position of the dimensional parameters of the dissipation spot device and the dissipation spot device and laser and is divided into the phase difference value of two-beam, and the phase difference value is compared with the first preset value, using comparison result as the foundation for adjusting shift length of the dissipation spot device in the direction perpendicular to laser emitting optical path.The present invention can change dissipation spot device to the eradicating efficacy of the laser beam of laser emitting by adjusting the current relative position of dissipation spot device and laser.
Description
Technical field
The present invention relates to laser projection display fields, regulating system and side more particularly to a kind of dissipation spot laser light source
Method.
Background technique
The features such as laser has monochromaticjty good, and coherence is good, good directionality, brightness is high, when laser is as projection light source,
Since its coherence will cause well laser facula and itself hot spot interferes (from relevant), the shape beside laser emitting hot spot
At the veiling glare of brightness irregularities, that is, laser speckle, these speckles will affect projection imaging picture, cause viewing uncomfortable
Sense.
A variety of speckle devices that disappear are currently, there are, one of them is the setting dissipation spot device in laser emitting optical path, is disappeared
Speckle device includes depositing the first wedge and the second wedge that symmetrical fitting is arranged, dissipation spot device and laser constitution for 180 ° each other
Dissipation spot laser light source.But the relative positional relationship of laser and dissipation spot device is fixed in this dissipation spot laser light source, nothing
Method changes dissipation spot device to the laser of laser emitting by adjusting the current relative position of dissipation spot device and laser
The eradicating efficacy of beam.
Accordingly, it is desirable to provide a kind of can promote dissipation spot effect by adjusting the relative position of laser and dissipation spot device
The regulating system and method for the dissipation spot laser light source of fruit.
Summary of the invention
The purpose of the present invention is to provide the regulating system and method for a kind of dissipation spot laser light source, the present invention can pass through
The current relative position of dissipation spot device and laser is adjusted to change dissipation spot device disappearing to the laser beam of laser emitting
Except effect.
In order to achieve the above objectives, first aspect present invention proposes a kind of regulating system of dissipation spot laser light source, described to disappear
Speckle laser light source includes laser and the dissipation spot device positioned at the laser emitting optical path, the dissipation spot device packet
The first wedge and the second wedge of 180 ° of symmetrical fitting settings that disappear each other are included, the regulating system includes:
Data processing module, for according to the dimensional parameters of the dissipation spot device and the dissipation spot device and laser
The current relative position of device obtains the laser beam that laser is emitted and enters after dissipation spot device the phase difference value for being divided into two-beam,
And be compared the phase difference value with the first preset value, using comparison result as the adjusting dissipation spot device
The foundation of shift length in the direction perpendicular to laser emitting optical path.
Preferably, the system also includes:
Displacement mechanism, for driving the dissipation spot device to be moved in the direction perpendicular to laser emitting optical path
It is dynamic.
Preferably, the data processing module generates control instruction according to comparison result, and institute's displacement mechanism is in response to institute
Stating control instruction drives the dissipation spot device mobile, disappears so that dissipation spot device enters the laser beam that laser is emitted
The phase difference value for being divided into two-beam after speckle device reaches first preset value.
Preferably, institute's displacement mechanism includes stepper motor.
Second aspect of the present invention proposes a kind of adjusting method of dissipation spot laser light source, comprising the following steps:
According to the dimensional parameters of the dissipation spot device and the current relative position of the dissipation spot device and laser
It obtains the laser beam that laser is emitted and enters after dissipation spot device the phase difference value for being divided into two-beam；
The phase difference value is compared with the first preset value, is existed using comparison result as the dissipation spot device is adjusted
Perpendicular to the foundation of the shift length on the direction of laser emitting optical path.
Third aspect present invention proposes a kind of regulating system of dissipation spot laser light source, and the dissipation spot laser light source includes
Laser and dissipation spot device positioned at the laser emitting optical path, the dissipation spot device include each other 180 ° dissipate it is symmetrical
It is bonded the first wedge and the second wedge of setting, the regulating system further include:
Image capture module, for acquiring the projected image of the dissipation spot laser light source；
Data processing module, for obtaining the speckle degree of laser beam according to the projected image, and by the speckle degree with
Second preset value is compared, using comparison result as the adjusting dissipation spot device in the side perpendicular to laser emitting optical path
The foundation of upward shift length.
Preferably, further includes:
Displacement mechanism, for driving the dissipation spot device to be moved in the direction perpendicular to laser emitting optical path
It is dynamic.
Preferably, the data processing module generates control instruction according to comparison result, and institute's displacement mechanism is in response to institute
Stating control instruction drives the dissipation spot device mobile, so that the speckle degree that the projected image obtains laser beam reaches described
Second preset value.
Preferably, institute's displacement mechanism includes stepper motor.
Fourth aspect present invention proposes a kind of adjusting method of dissipation spot laser light source, comprising the following steps:
Acquire the projected image of the dissipation spot laser light source；
The speckle degree of laser beam is obtained according to the projected image；
The speckle degree is compared with the second preset value, using comparison result as the adjusting dissipation spot
The foundation of shift length of the device in the direction perpendicular to laser emitting optical path.
Beneficial effects of the present invention are as follows:
Technical solution of the present invention has the advantages that definite principle, design are simple, and the present invention can adjust adjusting and dissipate
The current relative position of spot device and laser, to change dissipation spot device to the dissipation spot of the laser beam of laser emitting
Effect improves practicability and convenience, and structure is simple, and install convenient reduces production cost.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
The structure that Fig. 1 shows a kind of regulating system of dissipation spot laser light source of the proposition of one embodiment in the present invention is shown
It is intended to；
Fig. 2 shows the structural schematic diagrams for the dissipation spot device that one embodiment in the present invention proposes；
Fig. 3 shows the process of the regulating system of one of preferred embodiment in present invention dissipation spot laser light source
Figure；
Fig. 4 shows a kind of process of the adjusting method of dissipation spot laser light source of the proposition of one embodiment in the present invention
Figure；
Fig. 5 shows a kind of structure of the regulating system of dissipation spot laser light source of the proposition of another embodiment in the present invention
Schematic diagram；
Fig. 6 shows the process of the regulating system of one of preferred embodiment in present invention dissipation spot laser light source
Figure；
Fig. 7 shows a kind of process of the adjusting method of dissipation spot laser light source of the proposition of one embodiment in the present invention
Figure；
Fig. 8 shows the structural schematic diagram of the computer equipment of the proposition of the last one embodiment in the present invention.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
Fig. 1 is a kind of flow chart of the regulating system for dissipation spot laser light source that one embodiment of the present of invention provides, such as
Shown in Fig. 1, the dissipation spot laser light source includes laser and the dissipation spot device positioned at the laser emitting optical path, institute
Stating dissipation spot device includes dissipating the first wedge and the second wedge that symmetrical fitting is arranged, the regulating system packet for 180 ° each other
It includes:
Data processing module, the data processing module are used for according to the dimensional parameters of the dissipation spot device and described
The current relative position of dissipation spot device and laser obtains being divided into after the laser beam that laser is emitted enters dissipation spot device
The phase difference value of two-beam,
And be compared the phase difference value with the first preset value, using comparison result as the adjusting dissipation spot device
The foundation of shift length in the direction perpendicular to laser emitting optical path.
It should be noted that the plane of incidence of the first wedge should be understood as being contacted when laser beam is incident to the first wedge
Surface, the output face of the first wedge should be understood as the surface contacted when laser beam is exported to the second wedge, correspondingly,
The plane of incidence of second wedge should be understood as laser beam and be incident to the surface contacted when the second wedge, and the second wedge is defeated
It should be understood as laser beam to export to the surface contacted outside the second wedge.In the present embodiment, laser emitting
Laser beam is incident to the first wedge with the plane of incidence perpendicular to the first wedge and is gone out perpendicular to the exit facet of the second wedge
It penetrates, the exit facet of the plane of incidence of the first wedge and the second wedge is to be parallel to each other, and the first wedge disappears with composed by the second wedge
The shape of speckle device is parallelogram, and the first wedge is identical as the second wedge specification, illustratively, as shown in Fig. 2, first
Wedge can be to be triangular shaped in Fig. 2 with the second wedge, but those skilled in the art are, it should be understood that the first wedge and the second wedge
Shape it is without being limited thereto, illustratively, can also for it is trapezoidal or other.
It should be understood that in the present embodiment, between the optical axis of the first wedge and the polarization direction of the laser beam
Angle is 45 ° of axis
Herein, since the first wedge is identical as the dimensional parameters of the second wedge, so the optical axis and laser of the second wedge
Angle between the polarization direction of beam is also 45 ° of axis.
In the specific implementation of the present embodiment, the laser beam that laser is emitted is divided into two-beam after entering dissipation spot device
Phase difference value can be obtained by following formula:
Wherein, d1Pass through the thickness passed through in the first wedge, d for laser beam2It is laser beam by the thickness in the second wedge
Degree.
Specifically, the first wedge and the second wedge in the present embodiment form dissipation spot device, base by way of glued
In the feature of wedge, birefringent phenomenon can be occurred after in laser light incident to wedge, laser beam can be divided into ordinary light (o light) and non-
Ordinary light (e light), such as the index path in Fig. 2, only when laser beam is different by the first wedge and the second wedge thickness
When part, ordinary light and extraordinary ray can generate certain phase difference, so as to achieve the purpose that weakening laser speckle.
The present embodiment changes dissipation spot in an implementation, by adjusting the current relative position of dissipation spot device and laser
Displacement of the device in the direction perpendicular to laser emitting optical path, can also change laser beam pass sequentially through the first wedge with
Thickness when the second wedge, so that laser beam enters the ordinary light that the first wedge is separated and extraordinary ray generates one
Fixed phase difference value can thus change dissipation spot device and eliminate efficiency to the speckle of laser beam, and data processing module is used
Enter after dissipation spot device to the laser beam that laser is emitted and is divided into the phase difference value of two-beam and the first preset value is compared
Compared with, and using comparison result as adjust the displacement of the dissipation spot device in the direction perpendicular to laser emitting optical path away from
From foundation, herein, the first preset value can be set by user, illustratively, when ordinary light and extraordinary ray it
Between phase difference value reachIt can achieve the effect that good weakening laser speckle when interior, so the first preset value can
To be set asIn actual use, the shift length that user can offset speckle device according to comparison result carries out
Voluntarily adjust.
As shown in figure 3, in an optional embodiment of the present embodiment, the system also includes:
Displacement mechanism, for driving the dissipation spot device to be moved in the direction perpendicular to laser emitting optical path
It is dynamic.
Displacement mechanism drives the movement of dissipation spot device that can adjust dissipation spot device perpendicular to laser emitting optical path
Shift length on direction, that is, adjust dissipation spot device and laser current relative position, also allow for laser beam into
Enter the first wedge to change with thickness when the second wedge, the further laser beam that changes is sought into what the first wedge was separated
Phase difference value between ordinary light and extraordinary ray, to achieve the effect that weakening laser speckle.
In an optional embodiment of the present embodiment, the data processing module is generated according to comparison result and is controlled
Instruction, institute's displacement mechanism drive the dissipation spot device mobile in response to the control instruction, so that dissipation spot device will
The laser beam that laser is emitted, which enters after dissipation spot device, to be divided into the phase difference value of two-beam and reaches first preset value.
Data processing module can send control instruction and carry out the drive dissipation spot device movement of command displacement mechanism, so as to
The automatic control function of displacement mechanism is realized, so that this system can be realized the shift length of automatic adjustment dissipation spot device, section
Manpower has been saved, convenience is improved.
Further, institute's displacement mechanism includes stepper motor.Illustratively, stepper motor drives dissipation spot at work
Device is moved, and after the completion of dissipation spot device is mobile, dissipation spot device is fixed, can reach and offset speckle device
The adjusting of part, for dissipation spot device fixing means for example: positioning column is set in dissipation spot device side, and pin deck will be positioned
Glue is fixed on wall or other fixed points.
Fig. 4 is a kind of process for adjusting method based on dissipation spot laser light source that another embodiment of the invention proposes
Figure, as shown in figure 4, the described method comprises the following steps:
According to the dimensional parameters of the dissipation spot device and the current relative position of the dissipation spot device and laser
It obtains the laser beam that laser is emitted and enters after dissipation spot device the phase difference value for being divided into two-beam；
The phase difference value is compared with the first preset value, is existed using comparison result as the dissipation spot device is adjusted
Perpendicular to the foundation of the shift length on the direction of laser emitting optical path.
Fig. 5 is a kind of flow chart of the regulating system for dissipation spot laser light source that another embodiment of the invention proposes,
As shown in figure 5, the dissipation spot laser light source includes laser and the dissipation spot device positioned at the laser emitting optical path,
The dissipation spot device includes dissipating the first wedge and the second wedge that symmetrical fitting is arranged for 180 ° each other, and the regulating system is also
Include:
Image capture module, for acquiring the projected image of the dissipation spot laser light source；
Data processing module, for obtaining the speckle degree of laser beam according to the projected image, and by the speckle degree with
Second preset value is compared, using comparison result as the adjusting dissipation spot device in the side perpendicular to laser emitting optical path
The foundation of upward shift length.
According to above it will be appreciated that, displacement mechanism drive the movement of dissipation spot device can adjust dissipation spot device perpendicular to laser
Shift length on the direction of device emitting light path, that is, the current relative position of dissipation spot device and laser is adjusted, also
So that laser beam enters the first wedge and changes with thickness when the second wedge, the further laser beam that changes enters the first light
The phase difference value between ordinary light and extraordinary ray that wedge is separated, to achieve the effect that weakening laser speckle.Therefore we can
The projected image of dissipation spot laser light source to be acquired, projected image is analyzed by data processing module, is come
It is compared to the speckle degree of projected image, and by obtained speckle degree with the second preset value, using comparison result as adjusting institute
State the foundation of shift length of the dissipation spot device in the direction perpendicular to laser emitting optical path.Herein, speckle degree embodies
The speckle of laser beam eliminates efficiency, and by speckle degree, we will be seen that elimination speckle of the laser beam after dissipation spot device
Effect to reach the change to laser beam speckle, the second preset value can be set by user.
Specifically, the speckle degree of laser beam can be obtained by following formula:
Wherein, S is speckle degree, σIFor the standard deviation of light intensity,<I>is the average value of light intensity, XiFor random distribution brightness value,For luminance mean value.
Data processing module obtains the random distribution brightness value and luminance mean value of image by image data, so as to
Speckle degree is calculated.
It is illustrated below with reference to a kind of application scenarios regulating system of dissipation spot laser light source described in the present embodiment:
When user carries out in use, opening laser, the laser beam all the way of laser transmitting can expose on dissipation spot device, by place
Laser beam after reason can be carried out outgoing by dissipation spot device and form projected image, and image capture module can adopt projected image
Collection, data processing module obtain the speckle degree of image according to projected image, and this makes it possible to the dissipation spot effects for changing laser beam
Fruit, so as to adjust the shift length of dissipation spot device according to speckle degree.
As shown in fig. 6, in an optional embodiment of the present embodiment, the system also includes: further include:
Displacement mechanism, for driving the dissipation spot device to be moved in the direction perpendicular to laser emitting optical path
It is dynamic.
In an optional embodiment of the present embodiment, the data processing module is generated according to comparison result and is controlled
Instruction, institute's displacement mechanism drives the dissipation spot device mobile in response to the control instruction, so that the projected image
The speckle degree for obtaining laser beam reaches second preset value.
Data processing module can send control instruction and carry out the drive dissipation spot device movement of command displacement mechanism, so as to
The automatic control function of displacement mechanism is realized, so that this system can be realized the shift length of automatic adjustment dissipation spot device to make
The projected image obtains the speckle degree of laser beam and reaches second preset value, achieve the purpose that adjust speckle degree, thus
Save manpower.
In an optional embodiment of the present embodiment, institute's displacement mechanism includes stepper motor.
In an optional embodiment of the present embodiment, the system also includes projection screens, and dissipate spot for rendering
The holographic diffuser screen of the projected image of laser light source, herein, image capture module can be with throwing of the acquired projections on projection screen
Shadow image.
In the optional embodiment of one in the present embodiment that those skilled in the art are understood that, described image acquisition module
It can be camera.
Those skilled in the art are it will be appreciated that image capture module is not limited only to camera, other dresses with Image Acquisition
It sets or device should also belong in protection scope of the present invention.
As shown in fig. 7, yet another embodiment of the present invention provides a kind of adjusting method of dissipation spot laser light source, including
Following steps:
Acquire the projected image of the dissipation spot laser light source；
The speckle degree of laser beam is obtained according to the projected image；
The speckle degree is compared with the second preset value, is being hung down using comparison result as the dissipation spot device is adjusted
Directly in the foundation of the shift length on the direction of laser emitting optical path.
Further include following methods in a preferred embodiment of the present embodiment:
The projected image of dissipation spot laser light source and the projected image of laser light source are acquired respectively；
The first speckle degree of laser beam is obtained according to the projected image of the dissipation spot laser light source；
The second speckle degree of laser beam is obtained according to the projected image of the laser light source；
The first speckle degree and the second speckle degree are subjected to difference operation, and by calculated result and default third value
It is compared, speckle device is offseted according to comparison result and is adjusted.
Herein, it should be noted that dissipation spot laser light source includes laser and dissipation spot device, and laser light source
Do not include dissipation spot device including laser, that is to say, that the projected image of laser light source do not pass through dissipation spot device into
Row dissipation spot processing, in the present embodiment, by the second speckle of the first speckle degree of dissipation spot laser light source and laser light source into
Row difference operation, and calculated result is compared with default third preset value, it thus will appreciate that dissipation spot device to laser
The dissipation spot efficiency of light source, is adjusted to offset speckle device according to comparing result, so that calculated result reaches
Three preset values, third preset value can be set according to user demand herein, illustratively, can be set third predetermined threshold value
It is set to 28%.
Further, when calculated result reaches the third preset value, the dissipation spot device is fixed；
The projected image of dissipation spot laser light source after acquisition is fixed；
The third speckle degree of laser beam is obtained according to the projected image of the dissipation spot laser light source after fixation；
Third speckle degree and the second speckle degree are subjected to difference operation, and calculated result and default 4th preset value are carried out
Compare, judges whether dissipation spot device adjusts completion according to comparison result.
Herein, it should be noted that offseting the mode that speckle device is fixed can solidify for dispensing, that is, will
The relative position of the dissipation spot device and laser adjusted is fixed, and after the completion of fixed, the dissipation spot after acquisition is fixed swashs
The projected image of radiant and the third speckle of laser beam is obtained according to the projected image of the dissipation spot laser light source after fixation
Third speckle degree and the second speckle degree are carried out difference operation, and calculated result are compared with default 4th preset value by degree,
Be in this way in order to check dissipation spot device during fixation either with or without occur position deviation, so as to guarantee dissipation spot
Accuracy, judge whether dissipation spot device adjusts completion according to comparison result, the 4th preset value can be according to user herein
Demand is set, and can be 25% by the 4th default settings illustratively, that is to say, that when calculated result is being greater than the 4th
After preset value, illustrate that adjustment is completed, if calculated result illustrates adjustment failure, need the spot that will dissipate less than the 4th preset value
It is readjusted.
The last one embodiment of the invention provides a kind of computer equipment, including memory, processor and is stored in
On memory and the computer program that can run on a processor, processor realize above-mentioned dissipation spot laser light source when executing program
Adjusting method.As shown in figure 8, the computer system for being suitable for being used to realize server provided in this embodiment, including centre
It manages unit (CPU), random visit can be loaded into according to the program being stored in read-only memory (ROM) or from storage section
It asks the program in memory (RAM) and executes various movements appropriate and processing.In RAM, it is also stored with computer system behaviour
Various programs and data needed for making.CPU, ROM and RAM are connected by bus by this.Input/input (I/O) interface also connects
It is connected to bus.
I/O interface is connected to lower component: the importation including keyboard, mouse etc.；Including such as liquid crystal display
And the output par, c of loudspeaker etc. (LCD) etc.；Storage section including hard disk etc.；And including such as LAN card, modulation /demodulation
The communications portion of the network interface card of device etc..Communications portion executes communication process via the network of such as internet.Driver
It is connected to I/O interface as needed.Detachable media, such as disk, CD, magneto-optic disk, semiconductor memory etc., according to need
It installs on a drive, in order to be mounted into storage section as needed from the computer program read thereon.
Particularly, it mentions according to the present embodiment, the process of flow chart description above may be implemented as computer software programs.Example
Such as, the present embodiment includes a kind of computer program product comprising the computer being tangibly embodied on computer-readable medium
Program, above-mentioned computer program include the program code for method shown in execution flow chart.In such embodiments, should
Computer program can be downloaded and installed from network by communications portion, and/or be mounted from detachable media.
Flow chart and schematic diagram in attached drawing, illustrate the system of the present embodiment, method and computer program product can
The architecture, function and operation being able to achieve.In this regard, each box in flow chart or schematic diagram can represent a mould
A part of block, program segment or code, a part of above-mentioned module, section or code include one or more for realizing rule
The executable instruction of fixed logic function.It should also be noted that in some implementations as replacements, function marked in the box
It can also occur in a different order than that indicated in the drawings.For example, two boxes succeedingly indicated can actually be basic
It is performed in parallel, they can also be executed in the opposite order sometimes, and this depends on the function involved.It is also noted that
Each box and signal and/or the combination of the box in flow chart in schematic diagram and/or flow chart, can use and execute rule
The dedicated hardware based systems of fixed functions or operations is realized, or can use the group of specialized hardware and computer instruction
It closes to realize.
Unit involved by description in this present embodiment can be realized by way of software, can also pass through hardware
Mode is realized.Described unit also can be set in the processor, for example, can be described as: a kind of processor includes obtaining
Modulus block, computing module, detection module etc..Wherein, the title of these units is not constituted under certain conditions to the unit sheet
The restriction of body.For example, data processing module is also described as " adjustment module ".
As on the other hand, present invention also provides a kind of computer readable storage medium, the computer-readable storage mediums
Matter can be computer readable storage medium included in device described in above-described embodiment；It is also possible to individualism, not
The computer readable storage medium being fitted into terminal.The computer-readable recording medium storage have one or more than one
Program, described program is used to execute by one or more than one processor is described in dissipation spot laser light source of the invention
Adjusting method.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of regulating system of dissipation spot laser light source, the dissipation spot laser light source includes laser and is located at described sharp
The dissipation spot device of light device emitting light path, the dissipation spot device include each other 180 ° dissipate the first wedges of symmetrical fitting setting with
And second wedge, which is characterized in that the regulating system includes:
Data processing module, for according to the dimensional parameters of the dissipation spot device and the dissipation spot device and laser
Current relative position obtains the laser beam that laser is emitted and enters after dissipation spot device the phase difference value for being divided into two-beam,
And be compared the phase difference value with the first preset value, it is hanging down using comparison result as the dissipation spot device is adjusted
Directly in the foundation of the shift length on the direction of laser emitting optical path.
2. system according to claim 1, which is characterized in that the system also includes:
Displacement mechanism, for driving the dissipation spot device to be moved in the direction perpendicular to laser emitting optical path.
3. system according to claim 2, it is characterised in that: the data processing module is generated according to comparison result and controlled
Instruction, institute's displacement mechanism drive the dissipation spot device mobile in response to the control instruction, so that dissipation spot device will
The laser beam that laser is emitted, which enters after dissipation spot device, to be divided into the phase difference value of two-beam and reaches first preset value.
4. system according to claim 2 or 3, which is characterized in that institute's displacement mechanism includes stepper motor.
5. a kind of adjusting method based on the system as described in any one of claim 1-3, which is characterized in that including following step
It is rapid:
It is obtained according to the current relative position of the dimensional parameters of the dissipation spot device and the dissipation spot device and laser
The laser beam that laser is emitted enters after dissipation spot device the phase difference value for being divided into two-beam；
The phase difference value is compared with the first preset value, using comparison result as the adjusting dissipation spot device vertical
In the foundation of the shift length on the direction of laser emitting optical path.
6. a kind of regulating system of dissipation spot laser light source, the dissipation spot laser light source includes laser and is located at described sharp
The dissipation spot device of light device emitting light path, the dissipation spot device include the first wedge of 180 ° of symmetrical fitting settings that disappear each other with
And second wedge, which is characterized in that the regulating system further include:
Image capture module, for acquiring the projected image of the dissipation spot laser light source；
Data processing module, for obtaining the speckle degree of laser beam according to the projected image, and by the speckle degree and second
Preset value is compared, using comparison result as the adjusting dissipation spot device in the direction perpendicular to laser emitting optical path
Shift length foundation.
7. system according to claim 6, which is characterized in that further include:
Displacement mechanism, for driving the dissipation spot device to be moved in the direction perpendicular to laser emitting optical path.
8. system according to claim 7, it is characterised in that: the data processing module is generated according to comparison result and controlled
Instruction, institute's displacement mechanism drives the dissipation spot device mobile in response to the control instruction, so that the projected image
The speckle degree for obtaining laser beam reaches second preset value.
9. system according to claim 7 or 8, which is characterized in that institute's displacement mechanism includes stepper motor.
10. a kind of adjusting method based on the system as described in any one of claim 6-8, which is characterized in that including following step
It is rapid:
Acquire the projected image of the dissipation spot laser light source；
The speckle degree of laser beam is obtained according to the projected image；
The speckle degree is compared with the second preset value, using comparison result as adjust the dissipation spot device perpendicular to
The foundation of shift length on the direction of laser emitting optical path.
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| CN103134439A (en) * | 2013-01-29 | 2013-06-05 | 天津大学 | Double-rotation optical wedge space phase shift method used for cutting speckle interference |
| CN108007677A (en) * | 2017-12-27 | 2018-05-08 | 杭州远方光电信息股份有限公司 | A kind of laser projection speckle measurement system |
| CN108051976A (en) * | 2017-12-29 | 2018-05-18 | 深圳市时代华影科技股份有限公司 | The laser projection device and system of speckle can be eliminated |
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| US20100265420A1 (en) * | 2009-04-16 | 2010-10-21 | Microvision, Inc. | Scanned Projection System Using Polymerized Liquid Crystal Layer for Speckle Reduction |
| CN201804162U (en) * | 2010-08-03 | 2011-04-20 | 福州高意通讯有限公司 | Laser projection displaying system with speckle removal |
| CN103134439A (en) * | 2013-01-29 | 2013-06-05 | 天津大学 | Double-rotation optical wedge space phase shift method used for cutting speckle interference |
| CN108007677A (en) * | 2017-12-27 | 2018-05-08 | 杭州远方光电信息股份有限公司 | A kind of laser projection speckle measurement system |
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