CN203882021U - A vibration device used for eliminating laser speckles - Google Patents
A vibration device used for eliminating laser speckles Download PDFInfo
- Publication number
- CN203882021U CN203882021U CN201420249784.7U CN201420249784U CN203882021U CN 203882021 U CN203882021 U CN 203882021U CN 201420249784 U CN201420249784 U CN 201420249784U CN 203882021 U CN203882021 U CN 203882021U
- Authority
- CN
- China
- Prior art keywords
- optical element
- motor
- vibrating device
- screw mandrel
- vibration device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000013307 optical fiber Substances 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Abstract
The utility model provides a vibration device used for eliminating laser speckles. The vibration device comprises a pedestal, a motor, a screw rod matching the motor, a control driving circuit, a transmission fixed slide bar, and an optical member fixing bracket. The vibration device is simple in structure and easy to make. The size of the device is small so that the whole structural system is reliable and compact, the vibration efficiency and amplitude can be regulated conveniently and the noise is small. The vibration device can better achieve the effect of eliminating laser speckles.
Description
Technical field
The utility model relates to laser field, relates in particular to a kind of vibrating device of laser display field eliminate laser speckle.
Background technology
In display system at laser as light source, when light source irradiates screen, due to the coherence of laser and the coarse meeting generation laser speckle of screen, have a strong impact on image displaying quality, hinder observer and from image, extract the information needing.So how to eliminate speckle, be that laser is as the research and development focus of the research field of light source always.
At present, the method for the laser speckle that disappears comprises: (1) eliminates Laser Time coherence; (2) eliminate laser spatial coherence, for example, in light path, insert diffuser or the random phase sheet of, a plurality of rotation or vibration.The existing device for the rotation of diffuser or phase plate and vibration is numerous, wherein in the device of rotation diffuser and phase plate, need to process processing to slice, thin piece fixing to facilitate, thereby brings the problem of difficulty of processing.In addition, it is all larger that these install common volume, is not easy to the integrated of system.In method for oscillating, in order to reach dissipation spot effect, vibrate not little.Existing vibration arrangement, complicated structure, volume is large, and noise is large.
Summary of the invention
In order to address the above problem, the utility model provides a kind of vibrating device for eliminate laser speckle, this device comprises base, motor, screw mandrel with electric drilling match, control driving circuit, transmission fixed slip bar, optical element fixed mount, optical element, wherein motor is arranged on base, screw mandrel and transmission fixed bar are installed on motor, optics firmware is connected by driver blade contact with screw mandrel, transmission fixed bar and optical element fixed mount are without frictional connection, and optical element is fixed on optical element fixed mount, and accessory drive is connected with motor.
Above-mentioned vibrating device, described motor is for realizing the micromachine of rotating by drives.
Above-mentioned vibrating device, the screw mandrel of described electric drilling match, is threaded drive lead screw, pitch can design as required.
Above-mentioned vibrating device, described optical element can be optical diffuser body or phase plate as required, optical fiber etc.
Device of the present utility model is vibrating device, utilize its vibration that realizes one dimension or two dimension to drive diffuser or random phase sheet, optical fiber and so on, thereby generation dynamic speckle, on screen, produce " boiling " speckle pattern, due to human eye integrating effect, realize the object that reduces speckle contrast.
The vibrating device for eliminate laser speckle that the utility model provides, simple in structure, easily realize, and motor to be easy to adjust quick, system noise is little, and energy consumption is low.Meanwhile, this apparatus structure volume is little, is conducive to be integrated in laser display system, makes one-piece construction compacter.
accompanying drawing explanation
Fig. 1 exemplifies vibrating device concrete structure of the present utility model and schematic diagram;
Fig. 2 is for carrying out the principle schematic of eliminate laser speckle embodiment 1 according to vibrating device of the present utility model;
Fig. 3 is for carrying out the principle schematic of eliminate laser speckle embodiment 2 according to vibrating device of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is specifically elaborated.
Figure 1 shows that concrete structure and the schematic diagram of the utility model vibrating device.As shown in Figure 1, vibrating device comprises following a few part: the motor 101 with screw mandrel is fixed on motor firm banking 102, the other end of screw mandrel 103 is connected with base 102 side plate spacing holes, optical element fixed mount 105 is connected by a driver blade contact with screw mandrel 103, thereby realize motor 101, by screw mandrel 103, drives 105 vibrations of optical element fixed mount.In addition, optical element fixed mount 105 without frictional connection, guarantees that optical element fixed mount there will not be swing in vibration processes, affects the stability of optical system with transmission fixed slip bar 104.Motor 101 is High Rotation Speed under the driving of drive unit, and rotary screw 103 drives 105 side-to-side vibrationss of optical element fixed mount.Compare with other existing methods, the frequency of this scheme optical element vibration and amplitude can, by regulating drive unit parameter and screw mandrel parameter to realize, implement convenient and simple.
Embodiment 1
Fig. 2 is for carrying out the principle schematic of eliminate laser speckle embodiment 1 according to vibrating device of the present utility model.As shown in Figure 2, the dissipation spot system in the present embodiment comprises: green laser light source 202, shaping lens 203,204, diffusion sheet 205, fly's-eye lens 206, projection screen 207, wherein diffusion sheet is fixed on the optical element fixed mount in the device 201 described in the utility model.The green laser 208 that green laser light source 202 produces, after shaping lens group 203,204, expand, project on diffusion sheet, from the green laser of diffusion sheet outgoing, after lens combination 203,204 shapings, through fly's-eye lens 206, even light amplification projects on projection screen 207.When vibrating device 201 operates according to design formula, on screen, produce " boiling " speckle pattern, due to human eye integrating effect, the green glow image that there is no speckle by seeing on screen.
Embodiment 2
Fig. 3 is for carrying out the principle schematic of eliminate laser speckle embodiment 2 according to vibrating device of the present utility model.As shown in Figure 2, dissipation spot system in the present embodiment comprises: green laser light source 302, coupled lens group 303, transmission multimode optical fiber 304, collimation lens 305, fly's-eye lens 306, projection screen 307, wherein on the middle one section of optical element fixed mount being fixed in the device 301 described in the utility model of multimode optical fiber 304.The green laser 308 that green laser light source 302 produces, through coupled lens group 303, be coupled into multimode optical fiber, in the middle of multimode optical fiber, get on one section of optical element fixed mount being fixed in vibrating device 301, the green laser being cast out by multimode optical fiber, after lens combination 305 shaping collimations, through the even light amplification of fly's-eye lens 306, then project on projection screen 207.When vibrating device 301 operates according to design formula, on screen, produce " boiling " speckle pattern, due to human eye integrating effect, the green glow image that there is no speckle by seeing on screen.
Finally it is pointed out that eliminate laser speckle as herein described, is not complete eliminate laser speckle, but makes speckle contrast drop to the scope that can meet concrete application requirements.And above embodiment is only unrestricted for the technical solution of the utility model is described.The person skilled of this area should be appreciated that for the technical solution of the utility model, modify can be equal to replacement, does not depart from the spirit and scope of technical solutions of the utility model, and it is all to be encompassed in the middle of claim scope of the present utility model.
Claims (4)
1. the vibrating device for eliminate laser speckle, it is characterized in that: described vibrating device comprises base, motor, screw mandrel with electric drilling match, accessory drive, transmission fixed slip bar, optical element fixed mount, optical element, wherein motor is arranged on base, screw mandrel and transmission fixed bar are installed on motor, optics firmware is connected by driver blade contact with screw mandrel, transmission fixed bar and optical element fixed mount are without frictional connection, optical element is fixed on optical element fixed mount, and accessory drive is connected with motor.
2. vibrating device as claimed in claim 1, is characterized in that: described motor can be realized rotating.
3. vibrating device as claimed in claim 1, is characterized in that: described screw mandrel is the screw mandrel with spiral type thread.
4. vibrating device as claimed in claim 1, is characterized in that: described optical element is diffusion sheet or for multimode optical fiber or be random phase sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249784.7U CN203882021U (en) | 2014-05-16 | 2014-05-16 | A vibration device used for eliminating laser speckles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249784.7U CN203882021U (en) | 2014-05-16 | 2014-05-16 | A vibration device used for eliminating laser speckles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203882021U true CN203882021U (en) | 2014-10-15 |
Family
ID=51682504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420249784.7U Expired - Lifetime CN203882021U (en) | 2014-05-16 | 2014-05-16 | A vibration device used for eliminating laser speckles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203882021U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752080A (en) * | 2019-03-29 | 2020-10-09 | 中强光电股份有限公司 | Illumination system and projection device |
| WO2021073051A1 (en) * | 2019-10-18 | 2021-04-22 | 中山新诺科技股份有限公司 | Dual-wavelength solder mask device |
-
2014
- 2014-05-16 CN CN201420249784.7U patent/CN203882021U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752080A (en) * | 2019-03-29 | 2020-10-09 | 中强光电股份有限公司 | Illumination system and projection device |
| CN111752080B (en) * | 2019-03-29 | 2021-08-31 | 中强光电股份有限公司 | Illumination system and projection device |
| WO2021073051A1 (en) * | 2019-10-18 | 2021-04-22 | 中山新诺科技股份有限公司 | Dual-wavelength solder mask device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3534206A3 (en) | Panel vibration type sound generating display device | |
| IN2014MN01645A (en) | ||
| JP2013250538A5 (en) | ||
| CN203882021U (en) | A vibration device used for eliminating laser speckles | |
| JP2011510358A5 (en) | ||
| JP2014239869A5 (en) | ||
| CN101976013A (en) | Projector with function of eliminating laser speckles | |
| EP2141915A3 (en) | Image stabilizer | |
| CN105700169A (en) | Apparatus for eliminating laser projection speckles | |
| CN202058351U (en) | Multifunctional vibration imaging demonstrator | |
| CN206710786U (en) | A kind of lenticular lenses projection lamp | |
| CN103064242A (en) | Micro projection device, control signal for micro projection device and generation method thereof | |
| TW201217887A (en) | Laser projector capable of eliminating speckles | |
| EP2770722A3 (en) | Image displaying device | |
| JP2011095839A5 (en) | ||
| CN101976014A (en) | Laser projector capable of eliminating speckles | |
| WO2015010583A1 (en) | Tuning fork vibration demonstrator | |
| CN204406825U (en) | A kind of apparatus for demonstrating utilizing Mechanical Method to synthesize lissajous figures | |
| CN102393561B (en) | Portable laser night vision device | |
| CN202084227U (en) | Tuning fork vibration imaging instrument | |
| CN207123662U (en) | The vibrating device of optical fiber | |
| CN204705770U (en) | A kind of adjustable laser beam expanding lens device of rotation | |
| CN204405020U (en) | A kind of device eliminated multiple stage Kinect structured light depth camera and mutually interfere | |
| CN102236995B (en) | Sound wave visual demonstration system and sound wave demonstration method thereof | |
| CN205485216U (en) | Subminiature bifocal segment zooms even light formula laser illuminator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |