CN108646424A - A kind of device and method realized laser lamp dynamic image and shown - Google Patents
A kind of device and method realized laser lamp dynamic image and shown Download PDFInfo
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- CN108646424A CN108646424A CN201810208920.0A CN201810208920A CN108646424A CN 108646424 A CN108646424 A CN 108646424A CN 201810208920 A CN201810208920 A CN 201810208920A CN 108646424 A CN108646424 A CN 108646424A
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- G—PHYSICS
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- 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
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/4266—Diffraction theory; Mathematical models
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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
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/4272—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having plural diffractive elements positioned sequentially along the optical path
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Abstract
The present invention relates to a kind of device and methods realized laser lamp dynamic image and shown.Device includes pedestal, and vertical diffraction optical assembly or ring type diffraction optical assembly are provided on pedestal；Vertical diffraction optical assembly includes laser lamp for emitting light beam and the diffraction target being arranged on beam path；Diffraction target includes target stand and the target holder that is arranged on target stand；Ring type diffraction optical assembly includes rotating base, and the round tube wall of upper and lower opening is provided on rotating base；The identical ring type optical element of several sizes is provided on barrel；It further include the laser lamp being arranged on barrel center for emitting light beam.The present invention provides arbitrary image translation in a kind of achievable dynamic Laser image display process, the device and methods of rotation and scaling.
Description
Technical field
The invention belongs to the technical fields that diffraction optics is shown, are related to a kind of dress showing image using diffraction optical element
It sets and method more particularly to a kind of realizing the device and method that shows of laser lamp dynamic image using diffraction optical element.
Background technology
Laser lamp mainly constitutes diffraction optics members by laser light source, mechanical motion mechanism and diffraction optical element three parts
Part surface is machined with the micro-structure of micro-nano-scale.Using micro-nano structure to the diffraction effect of light, diffraction optical element can incite somebody to action
Incident point-like laser output is the image needed.Due to the high brightness of laser, high collimation feature, laser lamp may be implemented far
Distance, high brightness image show, obtained quick development with domestic market American-European in recent years.
Although laser lamp has had more than 10 years history, most laser lamp products are only able to display quiet currently on the market
State image.In order to enrich performance content and improve expression effect, laser lamp needs to realize the Dynamic Announce of image, that is, real
Now arbitrary image transformation, the rotation of image translation and image.
In order to realize good dynamic image display effect, optical design in diffraction optical element, each frame figure are needed
The scheme of global optimization is carried out in terms of the arrangement mode and mechanical moving structure of picture.
And existing dynamic image shows to include several ways:
1, dot matrix way
Single pixel in independent control display screen shines or does not shine, and frame image each in this way corresponds to a different shape
The array of the pixel set of state, as LED is shown.
2, projection pattern
Image pre-production irradiates the whole image of film face, the image of different frame with angle pencil of ray light source on film
Inswept light beam can form the Dynamic Announce of image, such as film movie successively.
3, scan mode
With a branch of or several light source beams according to the profile quickly point by point scanning on imaging surface of image, since the vision of human eye is temporary
Benefit, human eye is stayed to can be appreciated that the dynamic pattern of contact, as laser galvanometer is imaged.
Realize that the dynamic image of laser lamp is shown using diffraction optical element, the corresponding micro-structure of each frame image is required for
In pre-production to substrate, this point is similar with projection pattern, the difference is that this micro-structure is naked eyes institute None- identified
, image can just display when only using up and (can be laser, LED light etc.) irradiation, and light beam can compare image district
Domain is small, without covering whole image region, so that it may completely to display image.
Current laser lamp product due to lack the optical design of diffraction optical element, each frame image arrangement mode and
The pool optimization method of three aspect of mechanical moving structure, causes performance likeness in form single, display effect is bad.Therefore, it solves to utilize
Diffraction optical element shows that laser lamp dynamic image becomes optical field urgent problem.
Invention content
In order to solve the problems, such as that the laser lamp being previously mentioned in background technology realizes that ideal Dynamic Announce effect, the present invention carry
A kind of device and method realized laser lamp dynamic image and shown is gone out.The present invention passes through to the micro-structure on diffraction optical element
The overall planning of arrangement mode and diffraction optics original paper motion mode between optical design, frame and frame effectively makes laser dynamic
Achieve the effect that arbitrary image translation, rotation and scaling in state image display process.
Technical solution of the invention is：A kind of device realized laser lamp dynamic image and shown, special character exist
In：Including pedestal, vertical diffraction optical assembly or ring type diffraction optical assembly are provided on pedestal；
Above-mentioned vertical diffraction optical assembly includes laser lamp for emitting light beam and the diffraction being arranged on beam path
Target；Above-mentioned diffraction target includes target stand and the target holder that is arranged on target stand；Above-mentioned target holder grinds central point by target stand control and does at the uniform velocity
Circular rotary movement；On above-mentioned target holder several vertical type optical elements are disposed with according to circular trace；
The perpendicular angle of optical element on the light beam and target holder that above-mentioned laser lamp is sent out；
Above-mentioned ring type diffraction optical assembly includes rotating base, and the round tube wall of upper and lower opening is provided on rotating base；
The identical ring type optical element of several sizes is provided on above-mentioned barrel；Further include being arranged on barrel center for emitting
The laser lamp of light beam；Above-mentioned round tube wall does uniform circular motion by rotating base；
The light beam that above-mentioned laser lamp is sent out and the perpendicular angle of barrel.
Above-mentioned target holder is square, length of side 20mm-30mm.
The moving radius that above-mentioned target holder does circular rotary movement is 6mm-7mm.
8 vertical type optical elements are provided on above-mentioned target holder.
Above-mentioned barrel height is 10mm, a diameter of 51mm of barrel.
The identical ring type optical element of 15 sizes is provided on above-mentioned barrel.
A method of based on the device that display laser lamp dynamic image is shown, it is characterized in that：The above method walks
Suddenly include the following steps：
(1) content of each frame image to be shown on output plane is determined；
(2) according to the content of each frame image, the translation for the X, Y-direction that each frame image needs on display plane is determined
Amount and rotation angle；
(3) according to the obtained translational movement of step 2 and rotation angle, the demand light field to output plane do translation transformation and
Rotation transformation；It brings the coordinate after translation and rotation transformation into following optical element design formula and carries out operation, obtain diffraction light
Learn the microstructure parameters pattern of element surface；Design of diffractive optical element formula is：
Wherein, k=1/ λ, λ represent wavelength；
G indicates the optical field distribution on diffraction optical element surface；
X indicates the abscissa on diffraction optical element surface；
Y indicates the ordinate on diffraction optical element surface；
ξ, ζ indicate output plane light field coordinate；
zdIndicate the distance between diffraction optical element and imaging plane；
It solves above-mentioned integral equation and obtains g (x, y), the corresponding micro-structure of first frame image can be obtained by g (x, y)；
(4) forms of motion of diffraction optical element is determined according to the requirement of display content and the material of diffraction optical element；
Wherein, vertical diffraction optical assembly is relatively suitble to the occasion that display frame number is less, element material has certain rigidity；
Ring type diffraction optical assembly is relatively suitble to the occasion that display frame number is more, element material has relatively good elasticity；
(5) according to selected diffraction optical element forms of motion, determine each frame micro-structure is arranged in order mode；
(6) it determines the display time that each frame image needs, and then determines the corresponding micro structured pattern of each frame pattern
Overall dimension；
(7) according to the arrangement mode and overall dimension of the micro structured pattern determined, each frame micro-structure figure has been arranged in order it
Case is completed layout design, is performed image display.
The overall dimension of micro structured pattern is set as L in above-mentioned steps 6, and the translational velocity of L=V*T, diffraction optical element are set
For V, the display time that single frames needs is set as T, brings following equation into and obtain L concrete numerical values：
L=V*T.
Above-mentioned steps (2) translational movement is the offset of the frame image relative to laser beam；Above-mentioned rotation angle is the frame figure
As the deflection angle relative to vertical direction.
It is an advantage of the invention that：A kind of device and method realized laser lamp dynamic image and shown proposed by the invention,
By to the design of diffraction optical element morning Microstructure Optics, the arrangement mode between frame and frame and diffraction optics original paper movement side
The overall planning of formula is realized arbitrary image translation, rotation and zooming effect in dynamic Laser image display process, is solved sharp
Key technical problem in light lamp industry upgrade and replacement process.
Description of the drawings
Fig. 1 is vertical diffraction optical assembly structural schematic diagram one of the invention；
Fig. 2 is target holder vertical type optical element distribution schematic diagram of the present invention；
Fig. 3 is vertical diffraction optical assembly structural schematic diagram two of the invention；
Fig. 4-11 is the schematic diagram of dynamic image of the present invention；
Figure 12 is ring type diffraction optical assembly structural schematic diagram of the present invention；
Wherein, 1- barrels, 2- laser lamps, 3- rotary fixing bases, 4- stabilizer blades, 5- rotating bases, 6- laser beams, 7- laser
Lamp, 8- target stands, 9- target holders, 10- vertical type optical elements, 11- images.
Specific implementation mode
In order to make technical solution of the present invention be more clearly understood, below in conjunction with attached drawing 1-3 and embodiment, the present invention is carried out
It is further described, so that those skilled in the art can be better understood from and implement, is not intended to limit the present invention.
Shown in Fig. 1 and Fig. 3, a kind of device realized laser lamp dynamic image and shown, including pedestal is arranged on pedestal
There is vertical diffraction optical assembly；
Vertical diffraction optical assembly includes laser lamp 7 for emitting laser beam 6 and the diffraction being arranged on beam path
Target；Diffraction target includes target stand 8 and the target holder being arranged on target stand 89；Target holder 9 does at the uniform velocity round rotation by 8 control centre's point of target stand
Transhipment is dynamic；Several vertical type optical elements 10 are disposed with according to circular trace on above-mentioned target holder 9, are had on vertical type optical element 10
The image 11 that body much arranges；
The laser beam 6 that laser lamp 7 is sent out and the 10 perpendicular angle of vertical type optical element on target holder 9；
As shown in figure 11, it is another device realized laser lamp dynamic image and shown, ring type diffraction optical assembly includes
Rotating base 5 is provided with the round tube wall 1 of upper and lower opening on rotating base 5；It is identical that several sizes are provided on the barrel 1
Ring type optical element；The barrel 1 does uniform circular motion by rotating base 5；The ring type diffraction optical assembly also wraps
Include the laser lamp 2 being arranged on 1 center of barrel for emitting light beam；
The light beam that the laser lamp 2 is sent out and 1 perpendicular angle of barrel.
The rotary fixing base for controlling 5 rotary motion of rotating base is provided with below 5 center of above-mentioned rotating base
3。
There are four stabilizer blades 4 for the 5 lower section setting of above-mentioned rotating base.
Above-mentioned laser lamp 2 is cylinder, and height forms circular radius more than barrel 1.
1 height of above-mentioned barrel is 10mm, 1 a diameter of 51mm of barrel.
The identical ring type optical element of 15 sizes is provided on above-mentioned barrel 1.
A method of based on the device that display laser lamp dynamic image is shown, method and step includes the following steps：
(1) content of each frame image to be shown on output plane is determined；
(2) according to the content of each frame image, the translation for the X, Y-direction that each frame image needs on display plane is determined
Amount and rotation angle；
(3) according to the obtained translational movement of step 2 and rotation angle, the demand light field to output plane do translation transformation and
Rotation transformation；It brings the coordinate after translation and rotation transformation into following optical element design formula and carries out operation, obtain diffraction light
Learn the microstructure parameters pattern of element surface；Design of diffractive optical element formula is：
Wherein, k=1/ λ, λ represent wavelength；
G indicates the optical field distribution on diffraction optical element surface；
X indicates the abscissa on diffraction optical element surface；
Y indicates the ordinate on diffraction optical element surface；
ξ, ζ indicate output plane light field coordinate；
zdIndicate the distance between diffraction optical element and imaging plane；
It solves above-mentioned integral equation and obtains g (x, y), the corresponding micro-structure of first frame image can be obtained by g (x, y)；
(4) forms of motion of diffraction optical element is determined according to the requirement of display content and the material of diffraction optical element.
Vertical diffraction optical assembly is relatively suitble to the occasion that display frame number is less, element material has certain rigidity；Ring type diffraction optics group
Part is relatively suitble to the occasion that display frame number is more, element material has relatively good elasticity.But the standard of selection is not absolute；
(5) according to selected diffraction optical element forms of motion, determine each frame micro-structure is arranged in order mode；
(6) it determines the display time that each frame image needs, and then determines the corresponding micro structured pattern of each frame pattern
Overall dimension；
(7) according to the arrangement mode and overall dimension of the micro structured pattern determined, each frame micro-structure figure has been arranged in order it
Case is completed layout design, is performed image display.
The overall dimension of micro structured pattern is set as L in step 6, and the translational velocity of L=V*T, diffraction optical element are set as V,
The display time that single frames needs is set as T, brings following equation into and obtains L concrete numerical values：
L=V*T.
Step (2) translational movement is the offset of the frame image relative to laser beam；Above-mentioned rotation angle is the frame image phase
For the deflection angle of vertical direction.
Laser lamp realizes that dynamic image shows the factor for needing to consider three aspects：
1, the optical texture design of diffraction optical element
In order to realize the Dynamic Announce of image, a certain number of micro- knots are manufactured on the same diffraction optical element surface
Structure, each different micro-structure correspond to a frame image.In order to realize translation, the rotates effe of image, in diffraction optics member
It is integrated in terms of the optical design of part using the design means such as central symmetry, off-axis.
2, the geometric parameter design of diffraction optical element
In order to realize the Dynamic Announce of image, need to make a series of micro-structures, list on a diffraction optical element surface
The geometric parameters such as the arrangement mode of the size of a micro-structure, the relative position of adjacent microstructures, micro-structure are to final dynamic
The display effect of image has a direct impact.And the determination of these parameters need to consider the response characteristic of human eye or detector,
The factors such as the kinetic characteristic of diffraction optical device.
3, the design of the mechanical moving structure of diffraction optical device
There are opposite translation and rotation fortune in order to realize the Dynamic Announce of image, between laser beam and diffraction optical device
It is dynamic.This movement will be matched with the geometry design parameter of diffraction optical device, could be realized smooth between different frame image
Transition.
The specific method is as follows：
1, the content of each frame image to be shown on output plane is determined.
2, according to the content of each frame image, the translation for the X, Y-direction that each frame image needs on display plane is determined
Amount and rotation angle.
3, in diffraction optical element optical texture design process, according to step 2 as a result, demand light to output plane
Do translation transformation and rotation transformation in field.The coordinate after translation and rotation transformation is brought into design of diffractive optical element formula to transport
It calculates, obtains the microstructure design on diffraction optical element surface.
4, the forms of motion of diffraction optical element is determined according to the requirement of display content.
5, according to selected diffraction optical element forms of motion, determine each frame micro-structure is arranged in order mode.
6, it determines the display time that each frame image needs, and then determines the total of the corresponding micro structured pattern of each frame pattern
Body size shows that time L=V*T, V are the translational velocities of diffraction optical element, and T is the display time that single frames needs.
7, according to the arrangement mode and overall dimension of the micro structured pattern determined, each frame micro-structure figure has been arranged in order it
Case completes layout design.
Embodiment 1
The present embodiment is implemented using vertical diffraction optical assembly as shown in figures 1 and 3, the following institute of concrete methods of realizing
It states：
Step 1：Determine the content of each frame of dynamic image.
The present embodiment includes 8 frame images, respectively Fig. 4-11 altogether.
Step 2:Determine translation and the rotation amount of each frame.
The present embodiment does not rotate, and only translates.If translational movement is Di, (i representative images frame number).Determine the flat of each frame
Shifting amount is：
Di=10*i (i is from 0 to 7)
Step 3:The optical field distribution of each frame output pattern plane is expressed as u (ξ, ζ)；The light field on diffraction optical element surface
Distribution and expression is g (x, y):
According to step 2 as a result, the output light field to first frame does translation transformation.
ξ 1=ξ+D1
The present embodiment designs micro-structure with Fraunhofer diffraction integral formula, brings above-mentioned transformation into diffraction integral public affairs
Formula：
It solves above-mentioned integral equation and obtains g (x, y), the corresponding micro-structure of first frame image can be obtained by g (x, y).
8 frame images are handled in a manner described successively, obtain the corresponding micro-structure of 8 frame images.
Step 4:The forms of motion of diffraction optical element is determined according to the requirement of display content.
The present embodiment laser remains stationary as, and diffraction optical element is planar sheet, does translational motion with circular trace, i.e.,
Every bit on diffraction optical element is all in the uniform circular motion of radiuses such as doing, and entire diffraction optical element itself is only flat
Shifting movement is without rotary motion.
Step 5:According to selected diffraction optical element forms of motion, determine each frame micro-structure is arranged in order mode.
Since diffraction optical element is doing circumference translational motion at the uniform velocity with circular trace, when display in order to make each frame
Between it is identical, need ensure the inswept each frame image of laser beam distance it is consistent.
8 frames treated graphical arrangement mode is as shown in Fig. 2, the positive direction of each frame image is consistent, the present embodiment
Middle selection upward, 8 numbers 1 in Fig. 2,2,3,4,5,6,7,8 it is merely meant that 8 frame images serial number, and in description of the drawings
Serial number indicate that content is different.
Step 6:It determines the display time that each frame image needs, and then determines the corresponding micro structured pattern of each frame pattern
Overall dimension.
If V is the linear velocity speed of the circumference translation of diffraction optical element, T is the display time that single frames needs, and L is 45 degree
The corresponding arc length of subtended angle, then have following relationship：
L=V*T
It is one second to select each frame picture display times, and the every bit on diffraction optical element is done at the uniform velocity with 10 millimeters per second
Circular motion.Then the corresponding arc length of 45 degree of subtended angles is 10 millimeters, and the corresponding radius of gyration is 12.7 millimeters.Determine overall diffraction light
Learn the rectangle that the size of element is 28*28 millimeters.
Step 7:According to the arrangement mode and overall dimension of the micro structured pattern determined, the ruler of each frame image is determined
It is very little, it has been arranged in order each frame micro structured pattern, has completed layout design.
Embodiment 2
The present embodiment is implemented using ring type diffraction optical assembly as shown in figure 12, and steps are as follows for the specific implementation of embodiment 2：
Step 1:Determine the content of each frame of dynamic image.
The present embodiment includes 15 frame images altogether.
Step 2:Determine translation and the rotation amount of each frame.
The present embodiment does not rotate, and only translates.If translational movement is Di, (i representative images frame number).Determine the flat of each frame
Shifting amount is：
Di=10*i (i is from 0 to 14)
Step 3:The optical field distribution of each frame output pattern plane is expressed as u (ξ, ζ)；The light field on diffraction optical element surface
Distribution and expression is g (x, y):
According to step 2 as a result, the output light field to first frame does translation transformation.
ξ 1=ξ+D1
The present embodiment designs micro-structure with Fraunhofer diffraction integral formula, brings above-mentioned transformation into diffraction integral public affairs
Formula：
It solves above-mentioned integral equation and obtains g (x, y), the corresponding micro-structure of first frame image can be obtained by g (x, y), to 15
Frame image is handled in a manner described successively, obtains the corresponding micro-structure of 15 frame images.
Step 4:The forms of motion of diffraction optical element is determined according to the requirement of display content.
Laser lamp 2 in the present embodiment remains stationary as, and diffraction optical element is made as the cylindrical shape of a upper and lower opening, that is, schemes
Barrel 1 in 11, barrel 1 rotate around central axis, and by 1 central point of barrel, direction keeps protecting with barrel 1 laser beam
It holds vertical.
Step 5:According to selected diffraction optical element forms of motion, determine each frame micro-structure is arranged in order mode.
In order to keep the display time of each frame identical, need to ensure that the distance of the inswept each frame image of laser beam is consistent.By
It is made as the cylindrical shape of upper and lower opening, i.e. barrel 1 in diffraction optical element, and barrel 1 does the at the uniform velocity rotation fortune around central shaft
It is dynamic, thus the size of each frame image needs to be uniform, the positive direction of each frame image is consistent, upward.
Step 6:It determines the display time that each frame image needs, and then determines the corresponding micro structured pattern of each frame pattern
Overall dimension.
If V is the linear velocity speed of the circumference translation of diffraction optical element, T is the display time that single frames needs, and L is 22.5
The corresponding arc length of subtended angle is spent, then has following relationship：
L=V*T
Each frame picture display times are one second, and the every bit on diffraction optical element is steady circular with 10 millimeters per second
Movement.Then the corresponding arc length of 22.5 degree of subtended angles is 10 millimeters, and corresponding circular cylinder radius is 25.5 millimeters.Determine overall diffraction optics
The size of element is that radius is 25.5 millimeters, a height of 10 millimeters of cylindrical shape.
Step 7:According to the arrangement mode and overall dimension of the micro structured pattern determined, the ruler of each frame image is determined
It is very little, it has been arranged in order each frame micro structured pattern, has completed layout design.
According to step 6 as a result, determining that the size of each frame is 10*10 millimeters of rectangle.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of device realized laser lamp dynamic image and shown, it is characterised in that：Including pedestal, vertical spread out is provided on pedestal
Penetrate optical module or ring type diffraction optical assembly；
The vertical diffraction optical assembly includes laser lamp for emitting light beam and the diffraction target being arranged on beam path；Institute
It includes target stand and the target holder that is arranged on target stand to state diffraction target；The target holder is controlled by target stand and does at the uniform velocity round rotation along central point
Transhipment is dynamic；On the target holder several vertical type optical elements are disposed with according to circular trace；
The perpendicular angle of optical element on the light beam and target holder that the laser lamp is sent out；
The ring type diffraction optical assembly includes rotating base, and the round tube wall of upper and lower opening is provided on rotating base；It is described
The identical ring type optical element of several sizes is provided on barrel；Further include being arranged on barrel center for emitting light beam
Laser lamp；The round tube wall does uniform circular motion by rotating base；
The light beam that the laser lamp is sent out and the perpendicular angle of barrel.
2. a kind of device realized laser lamp dynamic image and shown according to claim 1, it is characterised in that：The target holder
It is square, length of side 20mm-30mm.
3. a kind of device realized laser lamp dynamic image and shown according to claim 2, it is characterised in that：The target holder
The moving radius for doing circular rotary movement is 6mm-7mm.
4. a kind of device realized laser lamp dynamic image and shown according to claim 3, it is characterised in that：The target holder
On be provided with 8 vertical type optical elements.
5. a kind of device realized laser lamp dynamic image and shown according to claim 1, it is characterised in that：The barrel
Height is 10mm, a diameter of 51mm of barrel.
6. a kind of device realized laser lamp dynamic image and shown according to claim 1, it is characterised in that：The barrel
On be provided with the identical ring type optical element of 15 sizes.
7. a kind of method of the device shown based on display laser lamp dynamic image, it is characterised in that：The method step includes
Following steps：
(1) content of each frame image to be shown on output plane is determined；
(2) according to the content of each frame image, determine the X, Y-direction that each frame image needs on display plane translational movement and
Rotation angle；
(3) according to the obtained translational movement of step 2 and rotation angle, the demand light field to output plane does translation transformation and rotation
Transformation；It brings the coordinate after translation and rotation transformation into following optical element design formula and carries out operation, obtain diffraction optics member
The microstructure parameters pattern on part surface；Design of diffractive optical element formula is：
Wherein, k=1/ λ, λ represent wavelength；
G indicates the optical field distribution on diffraction optical element surface；
X indicates the abscissa on diffraction optical element surface；
Y indicates the ordinate on diffraction optical element surface；
ξ, ζ indicate output plane light field coordinate；
Zd indicates the distance between diffraction optical element and imaging plane；
It solves above-mentioned integral equation and obtains g (x, y), the corresponding micro-structure of first frame image can be obtained by g (x, y)；
(4) forms of motion of diffraction optical element is determined according to the requirement of display content and the material of diffraction optical element；
Wherein, vertical diffraction optical assembly is relatively suitble to the occasion that display frame number is less, element material has certain rigidity；
Ring type diffraction optical assembly is relatively suitble to the occasion that display frame number is more, element material has relatively good elasticity；
(5) according to selected diffraction optical element forms of motion, determine each frame micro-structure is arranged in order mode；
(6) it determines the display time that each frame image needs, and then determines the totality of the corresponding micro structured pattern of each frame pattern
Size；
(7) according to the arrangement mode and overall dimension of the micro structured pattern determined, it has been arranged in order each frame micro structured pattern, it is complete
At layout design, perform image display.
8. a kind of method of device shown based on display laser lamp dynamic image according to claim 7, feature are existed
In：The overall dimension of micro structured pattern is set as L in the step 6, and the translational velocity of L=V*T, diffraction optical element are set as V, single
The display time that frame needs is set as T, brings following equation into and obtains L concrete numerical values：
L=V*T.
9. a kind of method of device shown based on display laser lamp dynamic image according to claim 7, feature are existed
In：Step (2) translational movement is the offset of the frame image relative to laser beam；The rotation angle is that the frame image is opposite
In the deflection angle of vertical direction.
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| US20150276178A1 (en) * | 2008-11-12 | 2015-10-01 | Tseng-Lu Chien | Led nightlight system having an image projection feature |
| US20120176782A1 (en) * | 2011-01-11 | 2012-07-12 | Vanderschuit Carl R | Illumination Apparatus |
| CN105866946A (en) * | 2016-06-02 | 2016-08-17 | 清华大学 | Design method of white light LED diffraction optical device |
| CN106402719A (en) * | 2016-08-30 | 2017-02-15 | 宁波凯盛电器有限公司 | Candle lamp |
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