CN208654525U - It is a kind of to show the screen electromagnetic oscillation device for eliminating speckle applied to laser light source - Google Patents
It is a kind of to show the screen electromagnetic oscillation device for eliminating speckle applied to laser light source Download PDFInfo
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- CN208654525U CN208654525U CN201821438319.2U CN201821438319U CN208654525U CN 208654525 U CN208654525 U CN 208654525U CN 201821438319 U CN201821438319 U CN 201821438319U CN 208654525 U CN208654525 U CN 208654525U
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- screen
- vibration
- light source
- laser light
- speckle
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Abstract
The utility model relates to a kind of screen electromagnetic oscillation devices that elimination speckle is shown applied to laser light source, including screen, the screen back side, which is equipped with, to be vibrated by the screen of electromagnetism power drive to eliminate the vibration unit of speckle, and the vibration unit is uniformly placed with several in screen；Vibration unit is the contact type structure for pushing directly on screen vibration, and contact type structure includes electromagnetic coil, vibration transfer layer, vibration transmitting block, vibrating reed；Vibration unit is the contactless structure for driving screen vibration indirectly, and contactless structure includes electromagnetic coil, permanent magnets.The utility model is pushed directly on or screen is driven to vibrate using electromagnetic force, laser speckle eradicating efficacy more preferably, have the advantages that structure it is simple, it is easy for installation, be hardly damaged, long service life.
Description
Technical field
The utility model relates to laser light source projection screen technical fields, specifically a kind of to put applied to laser light source
Reflect the screen electromagnetic oscillation device for eliminating speckle.
Background technique
With the development of motion picture technique, cinematographic projector develops to digital projection by past film projection, then by now
Extensive use of the laser light source projection technologies in movie theatre, laser light source projection technologies are with its brilliant color rendition degree, bright-coloured
The industrial advantages such as degree, high life and hi-vision resolution just gradually capture motion picture projection market, and completely new viewing is brought to spectators
Impression.
But due to limitation of the laser projector in technical conditions at this stage, so that laser is after screen surface projection reflects
The interference of light is caused, thus the dazzling snow of the graininess for forming random distribution, i.e. laser speckle.Laser speckle can greatly shadow
Image sharpness and image quality effect are rung, and spectators is made to be easy to produce visual fatigue, to significantly reduce film viewing experience.
Mainly there are several types of technical methods for the method for elimination laser speckle at present:
1, upgrade laser projector technology, such as 3P, 6P laser projector and fluorescent powder laser projector application.
2, the vision for making screen generate vibration interference laser speckle is formed, and e.g., is had using taut curtain tube vibration and is driven screen
The form of vibration, or have and drive screen using air agitation, it is allowed to certain frequency amplitude vibrations.
The equipment cost of above method is excessively high, is generally only applicable to the large-scale screen of cinemas movie theater, and screen vibration transmitting
Excessively soft apart from too long or vibration transfer medium, meeting vibrational energy generates loss, to influence the whole eradicating efficacy of laser speckle；
Secondly the above method for eliminating laser speckle, can inevitably generate equipment noise, to influence the sound effect of movie theater projection
Fruit, therefore there is deficiencies for above scheme, are not able to satisfy the demand of social development.
In conclusion in view of the drawbacks of the prior art, there is an urgent need to a kind of vibration transmitting apart from short, vibrational energy loss
It is low, mechanical or noise of air screen vibration device is not generated, so as to solve the deficiencies in the prior art.
Summary of the invention
In order to avoid with solve above-mentioned technical problem, the utility model proposes one kind be applied to laser light source projection eliminate
The screen electromagnetic oscillation device of speckle.
Technical problem to be solved in the utility model is realized using following technical scheme:
It is a kind of to show the screen electromagnetic oscillation device for eliminating speckle, including screen, the screen back applied to laser light source
Face, which is equipped with, to be vibrated by the screen of electromagnetism power drive to eliminate the vibration unit of speckle, and the vibration unit is uniformly arranged in screen
There are several.
The vibration unit is the contact knot for pushing directly on screen vibration as a further improvement of the utility model,
Structure.
The contact type structure includes electromagnetic coil, is connected in screen as a further improvement of the utility model,
Vibration transfer layer, the vibration transmitting block being connected with vibration transfer layer, one end is connected on vibration transmitting block and the other end is connected to
Vibrating reed on electromagnetic coil.
Before end occurs for the magnetic that the vibrating reed is arranged in parallel in electromagnetic coil as a further improvement of the utility model,
At 1cm.
The softer, elastic material that the vibration transfer layer is thickness 0.5cm~5cm as a further improvement of the utility model,
Material is made, and the soft elastic material is sponge or silica gel.
The disc-shaped hard that the vibration transmitting block is diameter 2cm~30cm as a further improvement of the utility model,
Material is made, and the hard material is any one of iron, aluminium, steel, plastics, plank.
The vibrating reed is made as a further improvement of the utility model, of magnetic conductive metal material, the magnetic conduction gold
Belonging to material is pure iron or ferrous alloys, and the ferrous alloys can be ferro-silicium, iron-nickel alloy, ferrocobalt, iron-carbon alloy
Any one of.
The vibration unit is in lattice arrangement on the screen back side as a further improvement of the utility model, including edge
Laterally conllinear distribution, along longitudinal direction conllinear distribution.
The vibration unit is in lattice arrangement on the screen back side as a further improvement of the utility model, including edge
It is laterally conllinear to be distributed, be interspersed along longitudinal direction.
The vibration unit is the contactless knot for driving screen vibration indirectly as a further improvement of the utility model,
Structure.
The vibration unit is arranged in the two sides up and down or four of screen at equal intervals as a further improvement of the utility model,
Week.
The contactless structure includes electromagnetic coil, is connected to screen back as a further improvement of the utility model,
Permanent magnets above end occur for face and the magnetic for being placed in electromagnetic coil；The magnetic that the permanent magnets are located at electromagnetic coil occurs above end
At 1cm.
One end of the electromagnetic coil is connected with power supply, another by conducting wire as a further improvement of the utility model,
End is connected with electric current voltage regulation and frequency modulation device by conducting wire.
The beneficial effects of the utility model are:
1, the utility model is pushed directly on using electromagnetic force or screen is driven to vibrate, and produces screen under controllable state
The vibration of raw certain frequency amplitude, thus the speckle effect for interfering laser to be formed in screen curtain face reflection interference, in visual effect
On effectively eliminate 90% or more laser speckle.
2, apart from short, vibrational energy loss is low for the utility model vibration transmitting, single to vibrate almost without equipment operation noise
Device can control the laser speckle of 3~5 ㎡ screens to eliminate, and will not impact to screen quality in installation with use process,
The vibration screen of laser projection is transformed into convenient for common screen.
3, the utility model have the advantages that structure it is simple, it is easy for installation, be hardly damaged, long service life.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model embodiment one；
Fig. 2 is the lattice arrangement distribution schematic diagram one of vibration unit in the utility model embodiment one；
Fig. 3 is the lattice arrangement distribution schematic diagram two of vibration unit in the utility model embodiment one；
Fig. 4 is the structural schematic diagram of the utility model embodiment two；
Fig. 5 is the arrangement schematic diagram of vibration unit in the utility model embodiment two.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
It is further described in face of the utility model.
Embodiment one:
As shown in Figure 1 to Figure 3, a kind of screen electromagnetic oscillation device for showing elimination speckle applied to laser light source, including
Screen 1,1 back side of screen, which is equipped with, to be vibrated by the screen of electromagnetism power drive to eliminate the vibration unit 2 of speckle, and the vibration is single
Member 2 is uniformly placed with several in screen 1.
The vibration unit 2 is the contact type structure 21 for pushing directly on screen vibration.
The contact type structure 21 includes that electromagnetic coil 211, the vibration transfer layer 212 being connected in screen 1 and vibration pass
Pass that the connected vibration transmitting block 213 of layer 212, one end is connected on vibration transmitting block 213 and the other end is connected to electromagnetic coil 211
On vibrating reed 214.
The magnetic that the vibrating reed 214 is arranged in parallel in electromagnetic coil 211 occurs before the 211a of end at 1cm.
The vibration transfer layer 212 is made of the soft elastic material of thickness 0.5cm~5cm, the soft elastic material
For sponge or silica gel.
The vibration transmitting block 213 is made of the disc-shaped hard material of diameter 2cm~30cm, and the hard material is
Any one of iron, aluminium, steel, plastics, plank.
The vibrating reed 214 is made of magnetic conductive metal material, and the magnetic conductive metal material is pure iron or ferrous alloys, institute
Stating ferrous alloys can be any one of ferro-silicium, iron-nickel alloy, ferrocobalt, iron-carbon alloy.
The vibration unit 2 is in lattice arrangement on 1 back side of screen, including transversely conllinear distribution, conllinear point along longitudinal direction
Cloth.
The vibration unit 2 is in lattice arrangement on 1 back side of screen, including is transversely collinearly distributed, staggeredly divides along longitudinal direction
Cloth.
One end of the electromagnetic coil 211 is connected with power supply 3, the other end by conducting wire and is connected with electric current pressure regulation by conducting wire
Frequency modulator 4.
The surface of the electric current voltage regulation and frequency modulation device 4 be equipped with adjust voltage, electric current, frequency parameter regulation key 5, the parameter
Adjusting key 5 includes operation button, operation knob.
In the present embodiment, vibration unit 2 is placed in 1 back side of screen, vibration transfer layer 212 is made gently to touch the back of screen 1
Face, and do not make screen 1 that obvious perceptible deformation occur, recycle conducting wire by electromagnetic coil 221 and electric current voltage regulation and frequency modulation device 4,
Power supply 3 is connected, and constitutes complete electric loop, wherein the voltage and frequency in circuit is adjusted in electric current voltage regulation and frequency modulation device 4, has reached
Control the magnetic force size and magnetic field alternative frequency of electromagnetic coil 221.
In use, opening power supply 3, the screen 1 laser picture being projected under vibrational state passes through observation laser speckle
Elimination situation adjusts electric current voltage regulation and frequency modulation device 4, controls the parameters such as magnetic force, the frequency of electromagnetic coil 211, shakes to control screen 1
It is dynamic, and reach optimal speckle eradicating efficacy, after debugging out optimal speckle eradicating efficacy, it can determine electric current voltage regulation and frequency modulation device
4 parameter, be allowed to afterwards in use, may be implemented direct firing current voltage regulation and frequency modulation device 4 just reach optimal speckle elimination
Effect.
Embodiment two:
As shown in Figure 4, Figure 5, a kind of to show the screen electromagnetic oscillation device for eliminating speckle, including silver applied to laser light source
Curtain 1,1 back side of screen is evenly equipped with several and is vibrated by the screen of electromagnetism power drive to eliminate the vibration unit 2 of speckle, described
Vibration unit 2 is distributed in lattice arrangement.
The vibration unit 2 is the contactless structure 22 for driving screen vibration indirectly.
The vibration unit 2 is arranged in two sides up and down or the surrounding of screen 1 at equal intervals.
The contactless structure 22 includes electromagnetic coil 211, is connected to 1 back side of screen and is placed in electromagnetic coil 211
Permanent magnets 221 above the 211a of end occur for magnetic；1cm above the 211a of end occurs for the magnetic that the permanent magnets 221 are located at electromagnetic coil 211
Place.
One end of the electromagnetic coil 211 is connected with power supply 3, the other end by conducting wire and is connected with electric current pressure regulation by conducting wire
Frequency modulator 4.
The surface of the electric current voltage regulation and frequency modulation device 4 be equipped with adjust voltage, electric current, frequency parameter regulation key 5, the parameter
Adjusting key 5 includes operation button, operation knob.
In use, opening power supply 3, the screen 1 laser picture being projected under vibrational state passes through observation laser speckle
Elimination situation adjusts electric current voltage regulation and frequency modulation device 4, controls the parameters such as magnetic force, the frequency of electromagnetic coil 211, shakes to control screen 1
It is dynamic, and reach optimal speckle eradicating efficacy, after debugging out optimal speckle eradicating efficacy, it can determine electric current voltage regulation and frequency modulation device
4 parameter, be allowed to afterwards in use, may be implemented direct firing current voltage regulation and frequency modulation device 4 just reach optimal speckle elimination
Effect.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model also has
Various changes and modifications, these changes and improvements are both fallen in claimed invention.The requires of the utility model protection
Range is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of show the screen electromagnetic oscillation device for eliminating speckle, including screen (1) applied to laser light source, feature exists
In: screen (1) back side, which is equipped with, to be vibrated by the screen of electromagnetism power drive to eliminate the vibration unit (2) of speckle, the vibration
Unit (2) is uniformly placed with several on screen (1).
2. a kind of screen electromagnetic oscillation device that elimination speckle is shown applied to laser light source according to claim 1,
Be characterized in that: the vibration unit (2) is the contact type structure (21) for pushing directly on screen vibration.
3. a kind of screen electromagnetic oscillation device that elimination speckle is shown applied to laser light source according to claim 2,
Be characterized in that: the contact type structure (21) includes electromagnetic coil (211), the vibration transfer layer that is connected on screen (1)
(212), vibration transmitting block (213), the one end being connected with vibration transfer layer (212) are connected in vibration transmitting block (213) and separately
One end is connected to the vibrating reed (214) on electromagnetic coil (211).
4. a kind of screen electromagnetic oscillation device that elimination speckle is shown applied to laser light source according to claim 3,
Be characterized in that: the magnetic that the vibrating reed (214) is arranged in parallel in electromagnetic coil (211) occurs before end (211a) at 1cm.
5. a kind of screen electromagnetism for showing elimination speckle applied to laser light source according to any one of claim 1 to 4
Vibration device, it is characterised in that: the vibration unit (2) is collinearly divided on screen (1) back side, including transversely in lattice arrangement
Cloth, along longitudinal direction conllinear distribution.
6. a kind of screen electromagnetism for showing elimination speckle applied to laser light source according to any one of claim 1 to 4
Vibration device, it is characterised in that: the vibration unit (2) is collinearly divided on screen (1) back side, including transversely in lattice arrangement
Cloth is interspersed along longitudinal direction.
7. a kind of screen electromagnetic oscillation device that elimination speckle is shown applied to laser light source according to claim 1,
Be characterized in that: the vibration unit (2) is the contactless structure (22) for driving screen vibration indirectly.
8. a kind of screen electromagnetic oscillation device that elimination speckle is shown applied to laser light source according to claim 7,
Be characterized in that: the vibration unit (2) is arranged in two sides up and down or the surrounding of screen (1) at equal intervals.
9. a kind of screen electromagnetic oscillation device that elimination speckle is shown applied to laser light source according to claim 7,
Be characterized in that: the contactless structure (22) includes electromagnetic coil (211), is connected to screen (1) back side and is placed in electromagnetic wire
Enclose the permanent magnets (221) above magnetic generation end (211a) of (211)；The permanent magnets (221) are located at the magnetic of electromagnetic coil (211)
Occur above end (211a) at 1cm.
10. a kind of screen electric and magnetic oscillation dress for showing elimination speckle applied to laser light source according to claim 3 or 9
It sets, it is characterised in that: one end of the electromagnetic coil (211) is connected with power supply (3), the other end by conducting wire and is connected by conducting wire
There is electric current voltage regulation and frequency modulation device (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821438319.2U CN208654525U (en) | 2018-09-04 | 2018-09-04 | It is a kind of to show the screen electromagnetic oscillation device for eliminating speckle applied to laser light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821438319.2U CN208654525U (en) | 2018-09-04 | 2018-09-04 | It is a kind of to show the screen electromagnetic oscillation device for eliminating speckle applied to laser light source |
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| Publication Number | Publication Date |
|---|---|
| CN208654525U true CN208654525U (en) | 2019-03-26 |
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|---|---|---|---|
| CN201821438319.2U Active CN208654525U (en) | 2018-09-04 | 2018-09-04 | It is a kind of to show the screen electromagnetic oscillation device for eliminating speckle applied to laser light source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845477A (en) * | 2018-09-04 | 2018-11-20 | 芜湖影星巨幕有限公司 | It is a kind of to show the screen electromagnetic oscillation device for eliminating speckle applied to laser light source |
-
2018
- 2018-09-04 CN CN201821438319.2U patent/CN208654525U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845477A (en) * | 2018-09-04 | 2018-11-20 | 芜湖影星巨幕有限公司 | It is a kind of to show the screen electromagnetic oscillation device for eliminating speckle applied to laser light source |
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