CN202306117U - Three-color laser cathode ray tube (CRT) projection system using laminar gun - Google Patents
Three-color laser cathode ray tube (CRT) projection system using laminar gun Download PDFInfo
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- CN202306117U CN202306117U CN2011204250436U CN201120425043U CN202306117U CN 202306117 U CN202306117 U CN 202306117U CN 2011204250436 U CN2011204250436 U CN 2011204250436U CN 201120425043 U CN201120425043 U CN 201120425043U CN 202306117 U CN202306117 U CN 202306117U
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Abstract
The utility model relates to the technical field of electronics, in particular to a projection system. A three-color laser cathode ray tube (CRT) projection system using a laminar gun comprises a light source system, an optical prism group and a projection optical system. The light source system comprises a laser CRT, and generated three-color laser forms a three-color synthetic light beam through the optical prism group. The laser CRT comprises a vacuum tube, a laser panel is arranged at one end of the vacuum tube, and the laminar gun is arranged at the other end of the vacuum tube. A focusing deflection system is arranged in front of the laminar gun. The laser panel is arranged in front of the focusing deflection system. By the technical scheme, an electron gun adopts the laminar gun for emitting electron beams, the current density of the laser panel is uniformly distributed, the power consumption of the laser panel is averaged, and energy converted into heat is reduced. Moreover, a laser light source generated by the system is a three-color light source.
Description
Technical field
The utility model relates to electronic technology field, is specifically related to a kind of optical projection system.
Background technology
Along with the rise of miniaturization, portable electric appts, existing projector equipment adopts the projector equipment of hand-held, low power consumption usually, and the light source that is suitable for this type of projector equipment most is LASER Light Source or light emitting diode light source.Wherein, LASER Light Source has extensively been thought low power consumption, the high high efficiency light source of brightness.
Optical projection system utilizes photomodulator to convert the light that penetrates from light source into image frame.This kind photomodulator normally utilizes porjection type/reflection LCD, the liquid crystal on silicon of liquid crystal at present, and the DMD in the DLP technology.In order to show image frame, need the laser of green/indigo plant/red three kinds of primary colors.
CRT be a kind of be display with cathode-ray tube (CRT), its mainly by cloche, electron gun, deflection coil, stress form by panel.Traditional CRT technology is used in televisor, the computer screen application, and the CRT technology also can be used in the projection mechanical-optical setup in addition, but often efficient is not high, and receives brightness limit.
CRT also can pass through the electron-beam excitation LASER Light Source, and the beam bombardment laser panel that the electron gun of CRT is produced produces LASER Light Source, has decoherence, brightness advantages of higher.But the electron-beam excitation system that general light source is equipped with adopts the intersection electron gun; This electron gun ejected electron bundle is at electric current distribution type of the being Gaussian of image planes; There is defective from luminescence mechanism; The energy that is converted into heat is than great, and the light-emitting zone power consumption is also inhomogeneous, has reduced the mean lifetime of chip.
The utility model content
The purpose of the utility model is, a kind of three look laser c RT optical projection systems that adopt laminar flow gun are provided, and solves above technical matters.
The technical matters that the utility model solved can adopt following technical scheme to realize:
Adopt three look laser c RT optical projection systems of laminar flow gun; Comprise light-source system, optical prism group, projection optical system, it is characterized in that; Said light-source system comprises a laser c RT who is used to produce three primary colors laser, and the three primary colors laser that said laser c RT produces forms a branch of three looks synthetic light through said optical prism group;
Said laser c RT comprises a vacuum tube; One end of said vacuum tube is provided with a laser panel; The other end of said vacuum tube is provided with a laminar flow electron gun, and the place ahead of said laminar flow gun is provided with a focus deflection system, and the place ahead of said focus deflection system is provided with said laser panel;
Said laser panel comprises at least two laser cavitys, and the laser that at least two said laser cavitys produce is a kind of in the three primary colors, and at least two said laser cavitys are arranged along thickness direction;
Said laser panel comprises that at least three arrange said laser cavity, and the laser color that the said laser cavity of a row produces is identical, and the said laser cavity of a row is adjacent the laser color difference of row's laser cavity generation.
Advantages such as the utility model is the light source of laser c RT light source as optical projection system, and having can eliminate laser speckle, controllability is good.And the electron gun of the utility model has adopted the laminar flow gun divergent bundle, and the current density of laser panel has more uniformly and to distribute, and average laser panel power consumption has reduced the energy that being converted into heat.
When the laser c RT of the utility model used as LASER Light Source, the LASER Light Source of generation was the LASER Light Source of three row's different colours.Therefore the utility model needs only a laser c RT as light source, and employing optical prism group is synthesized the LASER Light Source of three row's different colours, synthesizes three looks synthetic light and gets final product.Can save the number of laser c RT so greatly, save the whole cost of optical projection system.
Said laser cavity comprises a gain media layer, reflection horizon, and said reflection horizon is separately positioned on the place ahead and the rear of said gain media layer.
Said laser cavity comprises partially reflecting layer and complete reflection horizon, and said partially reflecting layer is arranged on the place ahead of said gain media layer, and said complete reflection horizon is arranged on the rear of said gain media layer.So that photon repeatedly excites in laser cavity.
Said focus deflection system comprise one be arranged on said electron gun the place ahead focusing coil, be arranged on the deflection coil in said focusing coil the place ahead, the place ahead of said deflection coil is provided with said laser panel.In order to keep the laminarity of electron beam, the deflection angle of deflection coil must be very little, must be in the linear deflection area of deflection coil.
Said vacuum tube comprises a funnel shaped cloche, and the wide-angle side of said cloche is provided with said laser panel, and the other end of said cloche is provided with said laminar flow gun.The structural design of vacuum tube and laminar flow gun can change according to practical application.
Also comprise a panel cooling system; Said panel cooling system comprises manifold, heat-exchange system, liquid coolant; Said liquid coolant is arranged in the said manifold, and said heat-exchange system connects the entrance and exit of said manifold, and said manifold comprises and is arranged on said peripheral manifold that stress panel periphery.Through whole laser panel periphery, the laser panel is cooled liquid coolant through manifold flow, and coolant temperature rises.The liquid coolant that heats up is left manifold from outlet, thereby gets into heat-exchange system, cools off with liquid coolant and circulates again.
Said manifold also comprises the panel manifold that is arranged on the said laser panel, and said panel manifold is arranged between adjacent two said laser cavitys;
Be provided with said panel manifold between the said laser cavity of adjacent two rows, what said panel manifold was crisscross is arranged on the said laser panel.After also being provided with manifold on the laser panel, can be better, more uniformly the laser panel is cooled off.
Said liquid coolant adopts insulation, transparent liquid coolant.So that panel cooling system isolated high voltage, the setting of having saved other electric shielding systems.Said liquid coolant can adopt the medium liquid coolant, like the Fluorinert of 3M manufactured, also can adopt perfluor liquid or other non conducting fluids.
Said manifold comprises at least two, at least two mutual UNICOMs of said manifold, and at least one at least two said manifolds connects said heat-exchange system.So that cooling laser panel more effectively and uniformly.
Beneficial effect: owing to adopt technique scheme, the utility model electron gun has adopted the laminar flow gun divergent bundle, and the current density of laser panel has more uniformly and distributes, and average laser panel power consumption has reduced the energy that being converted into heat.And the LASER Light Source that the utility model produces is the three primary colors light source.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model laser c RT;
Fig. 2 is the another kind of structural representation of the utility model laser c RT;
Fig. 3 is the cross sectional representation of the utility model laser panel;
Fig. 4 is the one-piece construction synoptic diagram of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 4, adopt three look laser c RT optical projection systems of laminar flow gun, comprise light-source system 1, optical prism group 4, projection optical system 5.Light-source system 1 comprises a laser c RT who is used to produce three primary colors laser, and the three primary colors laser that laser c RT produces forms a branch of three looks synthetic light through optical prism group 4.
With reference to Fig. 1, laser c RT comprises vacuum tube, and vacuum tube comprises funnel shaped cloche 11, and the wide-angle side of cloche 11 is provided with laser panel 12, and the other end of cloche 11 is provided with laminar flow gun 13.The place ahead of laminar flow gun 13 is provided with the focus deflection system, and the place ahead of focus deflection system is provided with laser panel 12.The focus deflection system comprises that the focusing coil 135, that is arranged on laminar flow gun 13 the place aheads is arranged on the deflection coil 136 in focusing coil 135 the place aheads, and the place ahead of deflection coil 136 is provided with laser panel 12.
With reference to Fig. 3, laser panel 12 comprises at least two laser cavitys 121, and the laser that at least two laser cavitys 121 produce is a kind of in the three primary colors, and at least two laser cavitys 121 are arranged along thickness direction.Laser panel 12 comprises that the laser color of at least three row's laser cavitys 121, one row's laser cavitys 121 generations is identical, and the laser color that the laser cavity 121 of row's laser cavity 121 rows of being adjacent produces is different.Laser cavity 121 comprises a gain media layer, reflection horizon, and the reflection horizon is separately positioned on the place ahead and the rear of gain media layer.Laser cavity 121 comprises partially reflecting layer and complete reflection horizon, and partially reflecting layer is arranged on the place ahead of gain media layer, and the reflection horizon is arranged on the rear of gain media layer fully.So that photon repeatedly excites in laser cavity.
With reference to Fig. 1, laminar flow gun 13 comprises negative electrode 131, and negative electrode 131 loads positive voltage respectively with laser panel 12.Electron gun comprises that also one is arranged on the control electrode 133 in negative electrode 131 the place aheads, and control electrode 133 connects an electron beam current control system 14.Through the control of electron beam current control system 14, control electrode 133 is used for the controlling electron beam electric current, and then changes strength of current.The voltage at control electrode 133 places has determined the brightness of laser panel 12 the place ahead exterior screen.
Electron gun can also comprise a G1 electrode 132, a G3 electrode 134, and control electrode 133 is as the G2 electrode, and G1 electrode 132 is arranged between negative electrode 131 and the G2 electrode, and G1 electrode 132 is loaded with negative voltage.G3 electrode 134 is arranged between G2 electrode and the focusing coil 135.Also comprise a dual drive modulating system 3, dual drive modulating system 3 connects negative electrode and G1 electrode 132 respectively.Dual drive modulating system 3 is used for Wehnelt cathode 131 and G1 electrode 132 responsive control signals, and dual drive modulating system 3 comes Wehnelt cathode 131 through adjusting voltage from high to low, and regulates low-voltage through G1 electrode 132.Dual drive modulating system 3 can be realized high resolving power.
With reference to Fig. 2, laminar flow gun 13 comprises a negative electrode 131, and negative electrode 131 loads negative voltage power supply, and laser panel 12 loads positive voltage source, negative voltage power supply and positive voltage source series connection, and junction ground connection.Negative electrode 131 is preferred to load 0～-the high negative voltage power supply of 20kv, laser panel 12 is preferred to load 0～+ the high positive voltage power supply of 20kv.High voltage through laser c RT in the utility model can be cut apart, and makes negative potential be applicable to negative electrode 131, and positive potential is applicable to anode, so the combined potential on laser panel 12 is near the electric potential difference of positive potential and negative potential.
Also comprise an electron beam current control system 14, electron beam current control system 14 connects negative electrode 131.Electron gun can also comprise a G1 electrode 132, a G2 electrode 133, a G3 electrode 134, and G1 electrode 132, G2 electrode 133, G3 electrode 134 are successively set between negative electrode 131 and the focus deflection system.G1 electrode 132, G2 electrode 133, G3 electrode 134 connect electron beam current control system 14 respectively, and electron beam current control system 14 each electrode of control are controlled the output intensity of laser
With reference to Fig. 1; Also comprise a panel cooling system, the panel cooling system comprises manifold, heat-exchange system 22, liquid coolant, and liquid coolant is arranged in the manifold; Heat-exchange system 22 connects the entrance and exit of manifold, and manifold comprises the peripheral manifold 21 that is arranged on the laser panel periphery.Through whole laser panel 12 peripheries, laser panel 12 is cooled liquid coolant through manifold flow, and coolant temperature rises.The liquid coolant that heats up is left manifold from outlet, thereby gets into heat-exchange system 22, cools off with liquid coolant and circulates again.
With reference to Fig. 3, manifold also comprises the panel manifold 23 that is arranged on the laser panel 12, and panel manifold 23 is arranged between adjacent two laser cavitys 121.Be provided with panel manifold 23,23 crisscross being arranged on the laser panel 12 of panel manifold between adjacent two row's laser cavitys.Liquid coolant adopts insulation, transparent liquid coolant.So that panel cooling system isolated high voltage, the setting of having saved other electric shielding systems.Liquid coolant can adopt the medium liquid coolant, like the Fluorinert of 3M manufactured, also can adopt perfluor liquid or other non conducting fluids.Manifold comprises at least two, at least two mutual UNICOMs of manifold, and at least one at least two manifolds connects heat-exchange system 22.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (9)
1. adopt three look laser c RT optical projection systems of laminar flow gun; Comprise light-source system, optical prism group, projection optical system, it is characterized in that; Said light-source system comprises a laser c RT who is used to produce three primary colors laser, and the three primary colors laser that said laser c RT produces forms a branch of three looks synthetic light through said optical prism group;
Said laser c RT comprises a vacuum tube; One end of said vacuum tube is provided with a laser panel; The other end of said vacuum tube is provided with a laminar flow electron gun, and the place ahead of said laminar flow gun is provided with a focus deflection system, and the place ahead of said focus deflection system is provided with said laser panel;
Said laser panel comprises at least two laser cavitys, and the laser that at least two said laser cavitys produce is a kind of in the three primary colors, and at least two said laser cavitys are arranged along thickness direction;
Said laser panel comprises that at least three arrange said laser cavity, and the laser color that the said laser cavity of a row produces is identical, and the said laser cavity of a row is adjacent the laser color difference of row's laser cavity generation.
2. three look laser c RT optical projection systems of employing laminar flow gun according to claim 1 is characterized in that said laser cavity comprises a gain media layer, reflection horizon, and said reflection horizon is separately positioned on the place ahead and the rear of said gain media layer.
3. three look laser c RT optical projection systems of employing laminar flow gun according to claim 2; It is characterized in that; Said laser cavity comprises partially reflecting layer and complete reflection horizon; Said partially reflecting layer is arranged on the place ahead of said gain media layer, and said complete reflection horizon is arranged on the rear of said gain media layer.
4. three look laser c RT optical projection systems of employing laminar flow gun according to claim 1; It is characterized in that; Said focus deflection system comprise one be arranged on said electron gun the place ahead focusing coil, be arranged on the deflection coil in said focusing coil the place ahead, the place ahead of said deflection coil is provided with said laser panel.
5. three look laser c RT optical projection systems of employing laminar flow gun according to claim 1; It is characterized in that; Said vacuum tube comprises a funnel shaped cloche, and the wide-angle side of said cloche is provided with said laser panel, and the other end of said cloche is provided with said laminar flow gun.
6. according to three look laser c RT optical projection systems of any described employing laminar flow gun in the claim 1 to 5; It is characterized in that; Also comprise a panel cooling system, said panel cooling system comprises manifold, heat-exchange system, liquid coolant, and said liquid coolant is arranged in the said manifold; Said heat-exchange system connects the entrance and exit of said manifold, and said manifold comprises and is arranged on said peripheral manifold that stress panel periphery.
7. three look laser c RT optical projection systems of employing laminar flow gun according to claim 6 is characterized in that said manifold also comprises the panel manifold that is arranged on the said laser panel, and said panel manifold is arranged between adjacent two said laser cavitys;
Be provided with said panel manifold between the said laser cavity of adjacent two rows, what said panel manifold was crisscross is arranged on the said laser panel.
8. according to three look laser c RT optical projection systems of claim 6 or 7 described employing laminar flow guns, it is characterized in that said liquid coolant adopts insulation, transparent liquid coolant.
9. according to three look laser c RT optical projection systems of claim 6 or 7 described employing laminar flow guns; It is characterized in that; Said manifold comprises at least two, at least two mutual UNICOMs of said manifold, and at least one at least two said manifolds connects said heat-exchange system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204250436U CN202306117U (en) | 2011-10-31 | 2011-10-31 | Three-color laser cathode ray tube (CRT) projection system using laminar gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204250436U CN202306117U (en) | 2011-10-31 | 2011-10-31 | Three-color laser cathode ray tube (CRT) projection system using laminar gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202306117U true CN202306117U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204250436U Expired - Fee Related CN202306117U (en) | 2011-10-31 | 2011-10-31 | Three-color laser cathode ray tube (CRT) projection system using laminar gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202306117U (en) |
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2011
- 2011-10-31 CN CN2011204250436U patent/CN202306117U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |