CN2727768Y - Device for eliminating vision interference fringe - Google Patents
Device for eliminating vision interference fringe Download PDFInfo
- Publication number
- CN2727768Y CN2727768Y CN 200420088095 CN200420088095U CN2727768Y CN 2727768 Y CN2727768 Y CN 2727768Y CN 200420088095 CN200420088095 CN 200420088095 CN 200420088095 U CN200420088095 U CN 200420088095U CN 2727768 Y CN2727768 Y CN 2727768Y
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- transducer
- mirror
- interference fringes
- optical mirror
- adapter
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Abstract
本实用新型涉及一种消除视觉干涉条纹的装置，包括：光学镜、换能器、驱动源和转接器；该转接器固定在底座的孔内，光学镜与换能器粘在一起，并安装在转接器内；所述的驱动源为能产生周期、或非周期电信号的信号发生器，驱动源与换能器电连接，驱动源通过导线与换能器电连接，驱动源输出电信号驱动换能器产生振—摆动，换能器再带动光学镜作振—摆运动。该装置采用作振—摆运动的光学镜作为消除视觉干涉条纹装置，与原有多模技术和扫描技术作为消干涉装置比较，光损耗低，成本低，效果好，结构简单，易于实现。
The utility model relates to a device for eliminating visual interference fringes, comprising: an optical mirror, a transducer, a driving source and an adapter; the adapter is fixed in a hole of a base, and the optical mirror and the transducer are glued together. and installed in the adapter; the driving source is a signal generator capable of generating periodic or non-periodic electrical signals, the driving source is electrically connected to the transducer, the driving source is electrically connected to the transducer through a wire, and the driving source The output electrical signal drives the transducer to vibrate-swing, and the transducer drives the optical mirror to vibrate-swing. The device adopts vibrating-swing optical mirror as the device for eliminating visual interference fringes. Compared with the original multi-mode technology and scanning technology as the device for eliminating interference, the device has low light loss, low cost, good effect, simple structure and easy realization.
Description
Technical field
The utility model relates to a kind of interference device that disappears, and particularly relates to a kind of device that is applied to the elimination vision interference fringe in the laser display system.
Background technology
Laser is because line width, and the coherence is good, and therefore making display light source with laser can produce interference fringe in display frame, makes image quality decrease.Eliminating the vision interference fringe at present has multiple mode, for example: German LDT GmbH ﹠amp; Co. utilize multimode optical fiber that LASER Light Source is coupled, become multi-mode laser through the laser after the multimode optical fiber coupling, so the coherence reduces.Also has a kind of interference device that disappears at present: Chinese patent application number: 02251313.2, denomination of invention: " being used for the scanning type area light that laser video shows ", this interference device that disappears utilizes laser radiation that laser instrument sends on the polygonal mirror of a high speed rotating, each reflecting surface of polygonal mirror is rotating shaft deflection certain angle toward each other, each face makes folded light beam be scanned into straight line, revolution is crossed a face, and sweep trace translation delegation forms scanning plane with sweep trace translation successively.But, in laser display system, adopt these modes of eliminating the vision interference fringe can bring optical loss big, and the effect of eliminating coherence is also undesirable, and the structure of these devices is also comparatively complicated.
Summary of the invention
The purpose of this utility model is to overcome multimode optical fiber and scanning technique is big as the optical loss of the interference device that disappears, cost height, baroque shortcoming; In order to improve visual effect, can also reduce the optical loss in the interventional procedures that disappears simultaneously; Thereby provide a kind of device that adopts the elimination vision interference fringe of galvanometer.
The purpose of this utility model is achieved in that a kind of device of eliminating the vision interference fringe that the utility model provides, and comprising: optical frames 1, drive source 5) it is characterized in that: also comprise a breakout box 3; This breakout box 3 is fixed in the hole of base 4, and optical frames 1 sticks together with transducer 2, and is installed in the breakout box 3; Described drive source be can the generation cycle or non-periodic electric signal signal generator, drive source 5 is electrically connected with transducer 2, drive source 5 is electrically connected with transducer 2 by lead, drive source 5 output electric signal drive transducer 2 generations and shake-swing, and transducer 2 drives optical frames 1 again and does to shake-pendular motion.
Described breakout box 3 is an annulus or a framework by the hard material making.
Also be included in and fix a circle resilient material on the framework of breakout box 3, elastic material ring is embedded in coherent optical frames 1 and transducer 2.
The minute surface normal of described optical frames 1 with small inclination around one fixedly straight line be the optical axis high-speed rotation, or the minute surface normal of optical frames is the optical axis high speed swinging with small inclination around fixing straight line, described small inclination scope is the angle greater than adjacent two interference fringes and optical frames formation, swing is the simple harmonic quantity swing, also can be non-simple harmonic quantity swing.
In technique scheme, drive source 5 is that an output electric signal is sine wave, square wave, triangular wave, sawtooth period signal, or the signal generator of nonperiodic signal.
In technique scheme, described transducer 2 is motors, electric and magnetic oscillation element or ultrasonic component.
In technique scheme, described optical frames comprises monochromatic lens, Multicolour mirror, level crossing, concave mirror or convex mirror, and this optical frames can be coated with the reflectance coating to desired LASER Light Source as required, also can be coated with the transmission film to this LASER Light Source.Particularly be applied in the tricolor laser display system, described optical frames 1 adopts curvature to be-convex lens of 150mm, and being coated with wave band is 671nm, 532nm, the high transmittance film of the red-green-blue laser of 473nm.
The principle of described elimination vision interference fringe device is: will do the moving optical frames that at a high speed shakes-transport and being arranged on the delivery outlet of each LASER Light Source of laser display system or the delivery outlet of synthetic light, the output rayed of display system is moved on the optical frames shaking-transport at a high speed; It is moving that drive source is made transducer at a high speed to shake-transport, and drive optical frames and do to shake-transport at a high speed and move, promptly center on to shake-optical axis of tilting mirror does reciprocal swing.Laser shakes-transports through work after moving shaking-tilting mirror reflection or the transmission, the interference fringe that is produced moves back and forth at a high speed, when travel frequency during far above 24Hz, visually see by the even clear picture of illumination of laser, thereby reach the purpose of eliminating the vision interference fringe.
A kind of device of eliminating the vision interference fringe that the utility model provides compares as the interference device that disappears with existing scanning technique, and optical loss is low, and cost is low, and is effective, simple in structure, is easy to realize, for the practicability of laser display has been opened up wide prospect.
Description of drawings
Fig. 1 is that the device of eliminating coherence of the present invention is formed synoptic diagram
Fig. 2 is that the device of eliminating coherence of the present invention is formed synoptic diagram
Fig. 3 is that the device of eliminating coherence of the present invention is formed synoptic diagram
Fig. 4 is the device synoptic diagram of the present invention's eliminating coherence of being used for the red-green-blue laser display
The drawing explanation:
1-optical frames; 2-transducer;
3-breakout box; 4-base;
5-drive source
Embodiment
Make the device of an eliminating coherence according to the light path of Fig. 1.
Optical frames 1 adopts flat mirror, and transducer 2 adopts ultrasonic transducer, and model is Hussar B2290EX.Breakout box 3 is annulus made of aluminum, and optical frames 1 is bonded on the ultrasonic transducer 2, and is installed in together in the annulus that aluminium makes, and the breakout box 3 that this aluminium is made is fixed in the center pit of base 4, and base 4 is installed on the optical table.Drive source 5 is electrically connected (as shown in Figure 1) by lead with transducer 2.What drive source 5 adopted is the generator of CALTEK CA1640P-02 model, its electric signal is added on the transducer 2, this generator output sinusoidal signal, the minute surface normal that the electric signal of this generator output drives optical frames 1 optical frames (1), is swung and is simple harmonic oscillation around the optical axis vibration at high speed with 10 ° small inclination.
To do shake at a high speed-pendular motion optical frames 1 is arranged on the delivery outlet of each LASER Light Source of laser display system, also can be arranged on the back of the synthetic light of laser display system, the output rayed of laser display system shaking at a high speed-pendular motion optical frames 1 on, laser is through doing to shake-optical frames 1 reflection of pendular motion, folded light beam scans fast, the interference fringe that is produced moves back and forth at a high speed with the frequency of 21MHz, thereby reaches the effect of eliminating the vision interference fringe.
Light path according to Fig. 2 realizes the device of galvanometer to the eliminating coherence of LASER Light Source.
Optical frames 1 adopts flat mirror, and transducer 2 adopts electromagnetic transducer, and model is Hussar B2290EX.Breakout box 3 is annulus made of aluminum, and optical frames 1 is bonded on the electromagnetic transducer 2, and is installed in together in the annulus that aluminium makes, and this breakout box 3 is fixed in the center pit of base 4, and base 4 is installed on the optical table.Drive source 5 is electrically connected (as shown in Figure 2) by lead with transducer 2.What drive source 5 adopted is the generator of CALTEK CA1640P-02 model, its electric signal is added on the transducer 2, this generator output triangular signal, the electric signal of this generator output drives optical frames 1, around the swing of optical axis high speed simple harmonic quantity, described small inclination is 15 ° to the minute surface normal of this optical frames 1 with small inclination.
Shake at a high speed doing-pendular motion optical frames 1 is arranged on the delivery outlet of each LASER Light Source of laser display system, also can be arranged on the back of the synthetic light of laser display system, the output rayed of laser display system shaking at a high speed-pendular motion optical frames 1 on, laser is through doing to shake-optical frames 1 transmission of pendular motion, folded light beam scans fast, the interference fringe that is produced moves back and forth at a high speed with the frequency of 50Hz, thereby reaches the effect of eliminating the vision interference fringe.
Light path according to Fig. 3 realizes the device of galvanometer to the eliminating coherence of LASER Light Source.
It is the concave mirror of 100mm that optical frames 1 adopts curvature, and transducer 2 adopts electromagnetic transducer, and model is HussarB2290EX.Breakout box 3 is annulus made of aluminum, and optical frames 1 is bonded on the electromagnetic transducer 2, and is installed in together in the annulus that aluminium makes, and this breakout box 3 is fixed in the center pit of base 4, and base 4 is installed on the optical table.Drive source 5 is electrically connected (as shown in Figure 3) by lead with transducer 2.What drive source 5 adopted is the generator of CALTEK CA1640P-02 model, its electric signal is added on the transducer 2, this generator output square-wave signal, the electric signal of this generator output drives the minute surface normal of optical frames 1 and swings around optical axis high speed simple harmonic quantity with small inclination, and described small inclination is 20 °.
Shake at a high speed doing-pendular motion optical frames 1 is arranged on the delivery outlet of each LASER Light Source of laser display system, also can be arranged on the back of the synthetic light of laser display system, the output rayed of laser display system shaking at a high speed-pendular motion optical frames 1 on, laser is through doing to shake-optical frames 1 reflection of pendular motion, folded light beam scans fast, the interference fringe that is produced moves back and forth at a high speed with the frequency of 60Hz, thereby reaches the effect of eliminating the vision interference fringe.
Light path according to Fig. 4 realizes the device of galvanometer to the eliminating coherence of LASER Light Source.
Optical frames 1 adopts curvature to be-convex lens of 150mm, and being coated with wave band is 671nm, 532nm, the high transmittance film of the red-green-blue laser of 473nm.Transducer 2 adopts electromagnetic transducer, and model is Hussar B2290EX, and breakout box 3 is annulus made of aluminum.Optical frames 1 is bonded on the electromagnetic transducer 2, and is fixed in the center pit of base 4 by breakout box 3 together, and drive source 5 is electrically connected (as shown in Figure 4) by lead with transducer 2.What drive source 5 adopted is the generator of CALTEK CA1640P-02 model, its electric signal is added on the transducer 2, this generator output nonperiodic signal, the electric signal of this generator output drive the minute surface normal of optical frames 1 and swing around the non-simple harmonic quantity of optical axis high speed with 30 ° small inclination.
Be arranged on the back that laser display system is synthesized light with doing the moving optical frames 1 that shakes-transport at a high speed, the LASER Light Source of this laser display system is that wave band is 671nm, 532nm, the red-green-blue laser of 473nm, be radiated at after the three-beam synthesize white light on the moving optical frames 1 that shakes-transport at a high speed, laser is through doing moving optical frames 1 transmission of shaking-transport, and transmitted light beam scans fast, the interference fringe that is produced moves back and forth at a high speed with the frequency of 70Hz, thereby reaches the effect of eliminating the vision interference fringe.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088095 CN2727768Y (en) | 2004-08-20 | 2004-08-20 | Device for eliminating vision interference fringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088095 CN2727768Y (en) | 2004-08-20 | 2004-08-20 | Device for eliminating vision interference fringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2727768Y true CN2727768Y (en) | 2005-09-21 |
Family
ID=35043781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420088095 Expired - Fee Related CN2727768Y (en) | 2004-08-20 | 2004-08-20 | Device for eliminating vision interference fringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2727768Y (en) |
-
2004
- 2004-08-20 CN CN 200420088095 patent/CN2727768Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050921 Termination date: 20110820 |