CN108663878A - Laser light projection display system - Google Patents
Laser light projection display system Download PDFInfo
- Publication number
- CN108663878A CN108663878A CN201810405503.5A CN201810405503A CN108663878A CN 108663878 A CN108663878 A CN 108663878A CN 201810405503 A CN201810405503 A CN 201810405503A CN 108663878 A CN108663878 A CN 108663878A
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- Prior art keywords
- wavelength selection
- laser
- laser light
- temperature
- adjustment
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention discloses a kind of laser light projection display systems, including：Laser light source unit, semiconductor refrigerating unit, heat dissipation circulating system, temperature collecting cell, temperature control unit；The semiconductor refrigerating unit is set to the module pedestal back side；The heat dissipation circulating system includes：Colling end, radiating end, liquid pump, circulation line, the colling end are set to the hot junction of the semiconductor refrigerating unit, and the colling end is connect by the circulation line with the liquid pump, and the other end of the liquid pump connects the radiating end.The automatic adjustment for realizing entire cooling system working condition, extends the service life of laser diode.In addition, the laser light source unit of this system realizes the luminous Accurate collimation function of laser diode.Provide the low energy consumption of laser light projection display system.
Description
Technical field
The present invention relates to Color Laser Projection Technology field more particularly to a kind of laser light projection display systems.
Background technology
Laser diode has started to start to apply in each optical field as light source.But directly luminous by laser diode
The angle of divergence is larger, it usually needs increase collimating mirror before laser diode, diverging light made to be converted to directional light, and collimating mirror with swash
The precision of the relative position of optical diode is difficult control, usually makes collimating effect very poor.Not due to single laser diode power
Height is usually wanted more to carry out array and is used in conjunction with, in the prior art, the laser collimation effect in diode laser matrix
Consistency is poor, it cannot be guaranteed that the collimating effect of entire array.In addition, diode laser matrix calorific value is big, common radiator is difficult
To meet its cooling requirements, limits and be generalized to normal domestic market by the optical articles of light source of laser.
Invention content
The present invention provides a kind of laser light projection display system, to overcome above-mentioned technical problem.
Laser light projection display system of the present invention, including：Wavelength selection penetrates speculum, the first lens, speculum, second thoroughly
Mirror, optical tunnel,
Laser light source unit, semiconductor refrigerating unit, heat dissipation circulating system, temperature collecting cell, temperature control unit；
The temperature collecting cell is used to acquire the real time temperature of the laser light source unit, and the real time temperature is sent out
It send to the temperature control unit；
The temperature control unit controls the semiconductor for receiving the real time temperature, and according to the real time temperature
Cooling piece and the heat dissipation cycling element；
The laser light source unit includes：Laser diode, module pedestal, collimating mirror and collimation ring, the laser two
Pole pipe is arranged in array on the module pedestal, the collimation ring be set to the collimating mirror and the laser diode it
Between, and the compression piece by being fixed on the module pedestal is pressed on the collimation ring, the semiconductor refrigerating unit is set
It is placed in the module pedestal back side；
The heat dissipation circulating system includes：Colling end, radiating end, liquid pump, circulation line, the colling end are set to institute
The hot junction of semiconductor refrigerating unit is stated, the colling end is connect by the circulation line with the liquid pump, the liquid pump
The other end connect the radiating end.
Further, further include：
Wavelength selection penetrates reflector position adjustment unit, and the wavelength selection penetrates reflector position adjustment unit packet
It includes：
Wavelength selection is through Reflector base, elastomeric element, adjustment pedestal, adjusting screw, adjustment link frame；
Link is arranged through Reflector base bottom end in the wavelength selection, and the adjustment link is set to the connection
Between frame and the adjustment pedestal, the link, the adjustment link frame and the adjustment pedestal pass through the adjustment spiral shell
Nail connection, is arranged elastomeric element between the adjustment link frame and the adjustment pedestal.
Further, further include：
Long selection is fixed on the wavelength selection through the wavelength selection in Reflector base through reflection through speculum
Mirror tabletting, the wavelength selection are set to the wavelength selection through speculum tabletting and penetrate Reflector base both sides, the tune
Whole link frame is respectively arranged at the link both sides, and the elastomeric element is set to the both ends of the link.
Further, further include：
The wavelength selection is arranged through Reflector base both sides penetrates what speculum tabletting was connect with the wavelength selection
Sliding slot is arranged in engaging lug, the engaging lug, and the sliding slot direction is perpendicular through Reflector base with the wavelength selection, described
Wavelength selection penetrates the distance between Reflector base by sliding slot adjustment through speculum tabletting with the wavelength selection.
Further, lens surface at least one in first lens subassembly have even light micro-feature structure and/
Or at least one lens surface has the micro-feature structure of even light in second lens subassembly.
Further, the micro-feature structure includes：
It is any one in V-type groove array, U-shaped tongue array, pyramid array, circle ring array and microlens structure array
Kind.
Further, the module pedestal is equipped with the installation for installing the laser diode, collimating ring and collimating mirror
Through-hole is arranged in hole, the compression on piece, and the through-hole is corresponding with the collimating mirror, and the through-hole edge, which is provided with, is directed toward institute
State the compression protrusion at through-hole center.
Further, the semiconductor refrigerating unit includes：
Semiconductor chilling plate, the semiconductor chilling plate cold end are pasted on the module pedestal back side.
Further, the semiconductor refrigerating unit further includes：
Semiconductor refrigerating stick, the semiconductor refrigerating stick are embedded in the module pedestal back side.
Further, the temperature control unit is specifically used for：
Judge the real time temperature whether exceed threshold temperature, if so, adjust the refrigerating capacity of the semiconductor chilling plate,
The rotating speed of the flow of the liquid pump and the fan；
Judge whether the real time temperature after adjusting exceeds threshold temperature, if so, reducing the laser light source cell power；
Judge whether the real time temperature after attenuating power exceeds threshold temperature, if so, stopping power module work.
Laser light projection display system of the present invention, including semiconductor refrigerating unit and heat dissipation circulating system, and combination temperature is adopted
Collection unit and temperature control unit improve the heat dissipation performance of laser light source module, it might even be possible to realize the work item less than room temperature
Part realizes the automatic adjustment of entire cooling system working condition, extends the use of laser diode by temperature control system
Service life.In addition, the laser light source unit of this system realizes the luminous Accurate collimation function of laser diode.Provide laser throwing
The low energy consumption of shadow display system.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is laser light projection display system heat-sink unit schematic diagram of the present invention；
Fig. 2 is laser light projection display system light path schematic diagram of the present invention；
Fig. 3 is the dimensional structure diagram of laser light source unit of the present invention.
Fig. 4 is the partial sectional view of Fig. 3.
Fig. 5 is the decomposing state figure of Fig. 3.
Fig. 6 is the collimated light path schematic diagram of the laser diode described in the embodiment of the present invention.
Fig. 7 is the back side dimensional structure diagram of the embodiment of the present invention.
Fig. 8 is that wavelength selection of the present invention penetrates reflector position adjusting apparatus structural schematic diagram；
Fig. 9 is that wavelength selection of the present invention penetrates reflector position adjusting apparatus assembled state light path principle schematic diagram；
Figure 10 is the three of the different angle that wavelength selection of the present invention penetrates reflector position adjusting apparatus entirety decomposing state
Dimensional view；
Figure 11 is that wavelength selection of the present invention is another through the different angle of reflector position adjusting apparatus entirety decomposing state
3-D view；
Figure 12 is the 3-D view that wavelength selection of the present invention penetrates reflector position adjusting apparatus pedestal decomposing state.
Drawing reference numeral explanation：
101- laser light source modules；102- semiconductor chilling plates；103- colling ends；104- circulation lines；105- radiating ends；
106- fans；107- liquid pumps；108- temperature collecting cells；
10- the first green laser arrays；11- the second green laser arrays；12- blue laser arrays；13- red laser battle arrays
Row；111- green reflection lens arrays；121- blue wavelengths select reflectance-transmittance mirror；131- red wavelengths select reflectance-transmittance mirror；
The first lens subassemblies of 20-；30- speculums；The second lens subassemblies of 40-；50- optical tunnels；60- micro-feature structures；
1- laser diodes；2- module pedestals；3- collimating mirrors；4- collimates ring；5- compresses piece；6- first positioning holes；7- spiral shells
Nail hole；8- grooves；9- semiconductor refrigerating sticks；13- protrusions；
801- wavelength selections penetrate Reflector base；802- elastomeric elements (totally 4 points)；803- adjusts pedestal；804- is adjusted
Screw (totally 4 points)；805- pilot holes；806- guide posts；807- contains plastic structure；810- wavelength selections penetrate speculum；809- waves
Long selection penetrates speculum tabletting (totally 2 points)；811- tablettings fixing screws (totally 4 points)；812- links fixing screws (totally 4
Point)；814- links；808- adjusts link frame；813- engaging lugs.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Laser light projection display system of the present invention may include：Wavelength selection is through speculum, the first lens subassembly, reflection
Mirror, the second lens subassembly, optical tunnel, laser light source unit, semiconductor refrigerating unit, heat dissipation circulating system, temperature collecting cell,
Temperature control unit；
The temperature collecting cell is used to acquire the real time temperature of the laser light source unit, and the real time temperature is sent out
It send to the temperature control unit；
The temperature control unit controls the semiconductor for receiving the real time temperature, and according to the real time temperature
Cooling piece and the heat dissipation cycling element；
The laser light source unit includes：Laser diode, module pedestal, collimating mirror and collimation ring, the laser two
Pole pipe is arranged in array on the module pedestal, the collimation ring be set to the collimating mirror and the laser diode it
Between, and the compression piece by being fixed on the module pedestal is pressed on the collimation ring, the semiconductor refrigerating unit is set
It is placed in the module pedestal back side；
The heat dissipation circulating system includes：Colling end, radiating end, liquid pump, circulation line, the colling end are set to institute
The hot junction of semiconductor refrigerating unit is stated, the colling end is connect by the circulation line with the liquid pump, the liquid pump
The other end connect the radiating end.
Further, the semiconductor refrigerating unit includes：
Semiconductor chilling plate, the semiconductor chilling plate cold end are pasted on the module pedestal back side.
Specifically, the present embodiment cooling system uses the operation principle of semiconductor refrigerating.Utilize semi-conducting material
Peltier effects can be distinguished when the galvanic couple that direct current is connected by two kinds of different semi-conducting materials at the both ends of galvanic couple
It absorbs heat and releases heat, the purpose of refrigeration may be implemented.It is it is a kind of generate bear thermal resistance Refrigeration Technique, temperature range,
It can be realized for 130 DEG C from 90 DEG C of positive temperature to negative temperature.Its main feature is that movement-less part, reliability is also relatively high.
As shown in Figure 1, the laser diode cooling system of the laser-projector of the present embodiment, including semiconductor chilling plate
102, heat dissipation circulating system, temperature collecting cell 108 and temperature control system.
Heat dissipation circulating system includes colling end 103, radiating end 105, liquid pump 107, circulation line 104 and fan 106.Half
The huyashi-chuuka (cold chinese-style noodles) of conductor cooling piece is close to 101 back side of laser light source module, is forced to laser light source module refrigeration, semiconductor chilling plate
The colling end of heat dissipation circulating system is close in hot face, and the heat of generation is conducted to heat dissipation circulating system, in order to increase heat transfer efficiency,
Between the huyashi-chuuka (cold chinese-style noodles) and the laser light source module back side of semiconductor chilling plate (location A in Fig. 1), and in the heat of semiconductor chilling plate
(B location in Fig. 1) is coated with heat-conducting silicone grease between face and the colling end of heat dissipation circulating system.
Since the refrigeration temperature levels of semiconductor chilling plate are that 90 DEG C of positive temperature arrives 130 DEG C of negative temperature, radiate cyclic system
System uses the water-cooling circulatory system.Cooling water in liquid pump driving circulation line is recycled, and heat is taken away from colling end,
Heat is discharged at radiating end, cooling water after cooling returns colling end, cycle operation.In order to enhance radiating efficiency, radiating end
The existing radiator structure such as radiating fin, protrusion can be increased.Fan can also be increased in radiating end, further strengthen heat dissipation effect
Rate.The rotational speed regulation radiating efficiency of the flow and fan of adjusting pump can also be passed through.
In order to keep layout of the cooling system in laser-projector more reasonable, more compact structure preferably sets circulation line
It is set to hose, therefore, radiating end can be laid out in any suitable position.
In order to be precisely controlled the temperature of laser light source module, the invention also includes temperature control systems, including processing chip
With control chip, processing chip sends out instruction for receiving the electric signal from temperature sensor, and to control chip, controls core
Piece for opening the semiconductor chilling plate, the pump and the fan, and adjust the semiconductor chilling plate refrigerating capacity,
The rotating speed of the flow of the pump and the fan.Specifically, warm spot mounting temperature sensor, moment are adopted in laser light source module
The temperature of laser light source module is acquired, the temperature of acquisition is converted into electric signal and is sent to processing chip, and processing chip passes through pre-
If program, analytic signal is sent to by control chip according to temperature signal, control chip links semiconductor chilling plate, pump and wind
Fan can control the switch and refrigerating capacity of semiconductor chilling plate according to the analytic signal of processing chip, and pump capacity and fan turn
Speed.
Further, lens surface at least one in first lens subassembly have even light micro-feature structure and/
Or at least one lens surface has the micro-feature structure of even light in second lens subassembly.
Specifically, as shown in Fig. 2, the system of the present embodiment include laser light source module, it is the first lens subassembly 20, anti-
Penetrate mirror 30, the second lens subassembly 40 and optical tunnel 50.The laser light source module include the green laser module being sequentially arranged,
Blue laser module and red laser module, three laser modules send out green laser, blue laser and red laser shape successively
Cheng Sanse laser.Specifically, the green laser module includes the first green laser array 10,11 and of the second green laser array
Green reflection lens array 111, the first green laser array 10 and the second green laser battle array 11 row are arranged vertically, the green light
Reflection mirror array 111 include reveal the green photopolymer substrate and on substrate spaced array arrange green reflection film, the green reflection mirror
Array 111 is placed between the first green laser array 10 and the second green laser array 11 and arrangement at 45 °, the first green laser
The green light that array 10 is sent out, which can reveal the green, not to be coated with reflection membrane part on photopolymer substrate and directly forms green light light path, and second
Green light one of the green light that green laser array 11 generates by green reflection film reflection and transmission on green reflection lens array
With formation green light light path.The blue laser module includes that blue laser array 12 and blue wavelength select reflectance-transmittance mirror 121,
Blue wavelength selection reflectance-transmittance mirror 121 reveals the green the anti-blue light of light, and the blue light that blue laser array 12 generates is by blue wavelength
Selection reflectance-transmittance mirror 121 is reflected, and the green light generated by green laser module is incident on blue wavelength and selects reflectance-transmittance
Blue green light light path is formed on mirror 121 and through the blue light with reflection after blue wavelength selection reflectance-transmittance mirror 121, it is described red sharp
Optical module includes red laser array 13 and red wavelength selection reflectance-transmittance mirror 131, and the red wavelength selects reflectance-transmittance
Mirror 131 reveals the green the anti-feux rouges of blue light, and the feux rouges that red laser array 13 generates is carried out anti-by red wavelength selection reflectance-transmittance mirror 131
Penetrate, blue green light be incident on red wavelength selection reflectance-transmittance mirror on and through red wavelength selection reflectance-transmittance mirror and reflection it is red
Color forms redgreenblue light source.Green laser array, blue laser array and red laser array are respectively by green semiconductor
Laser diode, blue semiconductor laser diode and red semiconductor laser diode are lined up array and are formed, due to existing
In technology, green semiconductor laser diode, blue semiconductor laser diode and red semiconductor laser diode power
Single power of difference, green semiconductor laser diode is 1W or so, and single power of blue semiconductor laser diode is
The single power of 4.5W or so, red semiconductor laser diode are 2.5W or so, therefore laser light source is swashed using two groups of greens
Optical arrays can reduce the strength difference between different light sources.
The laser light source module generates three color laser, and three color laser are incident to anti-after being converged by the first lens subassembly 20
Mirror 30 is penetrated, incident three color laser reflections to the second lens subassembly 40, three color laser are passed through the second lens by the speculum 30
The convergence of component 40 is incident in optical tunnel 50 to form laser projection.
Due to laser have preferable unicity, be also easy to produce when as light source interference and formed dissipation fleck ring at
Therefore image quality amount has on one or more surfaces of the lens of first lens subassembly 20 by photoetching or chemical attack
The micro-feature structure 60 of the array arrangement of formation；Or on one or more surfaces of the lens in second lens subassembly 40
Micro-feature structure 60 with the array arrangement formed by photoetching or chemical attack；Or the lens in first lens subassembly 20
Have by photoetching or chemical attack shape on one or more surfaces of the lens of one or more surfaces and the second lens subassembly 40
At array arrangement micro-feature structure 60, i.e., uniform light board structure will be integrated in the prior art with lens subassembly, with reality
Now incident laser is carried out eliminating energy spikes and uneven hot spot acts on, eliminated due to laser energy spike and easily cause to do
It relates to and leads to the problem of hot spot.The micro-feature structure 60 can be V-type groove array, U-shaped tongue array, pyramid array,
Any one in circle ring array and microlens array.Due to being machined with micro-feature structure, micro- feature knot on the plane of incidence of lens
Structure is diffused three incident color laser, and eliminate has good monochromaticjty due to laser, when use laser as light
It, will be along with serious speckle phenomena in imaging process when source.The quality of optical projection system is improved, while simplifying projection system
The structure of system saves production cost.
A kind of laser projection described in the present embodiment is shown to be had the advantages that with diffuser plate lens integral system：
1, along optical path direction, there is the micro-feature structure of array arrangement, micro- spy on the first incident minute surface of the first lens subassembly
Sign structure plays the role of being diffused incident laser, eliminates and easily causes interference to generate speckle since laser monochromaticjty is good
The problem of；2, due to the processing microfeature structure directly on lens, diffusion board structure need not individually be increased in the optical path,
Simplify structure design；3, diffusion structure is directly processed on lens, and center needs individually in 1mm thickness compared with the existing technology
Processing microfeature structure forms diffuser plate on the quartz glass or sapphire glass of left and right, which has better thermal diffusivity
Can, reduce the thermal deformation of optical device, ensure that source mass；4, the present invention is not needing quartz glass or sapphire conduct
Diffuser plate reduces production cost；5, green laser module has two groups of green laser arrays, reduces different in the prior art
The power difference of color laser diode causes luminous intensity different problems.
As shown in Figures 3 to 6, the present embodiment laser light source unit includes：Laser diode 1, module pedestal 2 and collimating mirror
3, the laser diode 1 is arranged in array, and collimation ring 4, the standard are equipped between the collimating mirror 3 and laser diode 1
Straight mirror 3 is pressed on by compressing piece 5 on collimation ring 4, and the compression piece 5 is fixed on module pedestal 2.It is multiple in the present embodiment
Collimating mirror 3 is pressed on by the compression piece 5 of an entirety on module pedestal 2, and the compression piece 5 is fixed by screws in module base
On seat 2, each collimating mirror 3 is adjacent at least two screws, ensures to compress effect.Specifically, module pedestal is equipped with for pacifying
The mounting hole of laser diode 1 is filled, laser diode 1, collimation ring 4 and collimating mirror 3 are mounted in mounting hole, the compression piece
5 are equipped with through-hole corresponding with collimating mirror, and the through-hole edge is equipped with the compression protrusion 13 for being directed toward through-hole center, collimating mirror 3
It is compressed by compressing piece 5 and compressing protrusion 13, while compressing collimation ring 4 and laser diode 1.
The module pedestal 2 is equipped with the first positioning hole 6 for navigating to light source module group in other structures and is used for
The screw hole 7 of fixed temperature sensor.The groove 8 for installing power supply circuit plate is additionally provided on the module pedestal 2.Location hole
With the setting of groove, enhance versatility.
The inner wall of the collimation ring 4 is ladder-like, and internal diameter of the collimation ring 4 close to the part of laser diode 1 is less than close
The internal diameter of the part of collimating mirror 3.Stair-stepping setting not only ensure that the intensity of collimation ring 4 and suitable installation dimension, but also be light
Source reserves sufficient space.
As shown in fig. 7, the back side of the module pedestal 2 is inserted with multiple semiconductor refrigerating sticks 9, the semiconductor refrigerating stick
9 refrigeration end is inserted into the back side of module pedestal 2, and the release end of heat of the semiconductor refrigerating stick 9 is located at the outside of module pedestal 2.Institute
It states and is equipped with Heat Conduction Material between the refrigeration end of semiconductor refrigerating stick and module pedestal, the Heat Conduction Material can be heat-conducting silicone grease.
In order to enhance refrigeration and heat dissipation effect, the release end of heat of the semiconductor refrigerating stick 9 is equipped with radiating fin 10.Semiconductor refrigerating stick 9
For PN junction semiconductor refrigerating stick, it is made of P-type semiconductor and N-type semiconductor.It, can also be as needed in the outside of radiating fin
Radiator fan is set.
Further, the module pedestal is equipped with the installation for installing the laser diode, collimating ring and collimating mirror
Through-hole is arranged in hole, the compression on piece, and the through-hole is corresponding with the collimating mirror, and the through-hole edge, which is provided with, is directed toward institute
State the compression protrusion at through-hole center.
Further, further include：
Wavelength selection penetrates reflector position adjustment unit, and the wavelength selection penetrates reflector position adjustment unit packet
It includes：
Wavelength selection is through Reflector base, elastomeric element, adjustment pedestal, adjusting screw, adjustment link frame；
Link is arranged through Reflector base bottom end in the wavelength selection, and the adjustment link is set to the connection
Between frame and the adjustment pedestal, the link, the adjustment link frame and the adjustment pedestal pass through the adjustment spiral shell
Nail connection, is arranged elastomeric element between the adjustment link frame and the adjustment pedestal.
Further, further include：
Long selection is fixed on the wavelength selection through the wavelength selection in Reflector base through reflection through speculum
Mirror tabletting, the wavelength selection are set to the wavelength selection through speculum tabletting and penetrate Reflector base both sides, the tune
Whole link frame is respectively arranged at the link both sides, and the elastomeric element is set to the both ends of the link.
Specifically, as shown in Fig. 8 to Figure 12, elasticity is arranged through between Reflector base and adjustment pedestal in wavelength selection
Component, the present embodiment elastomeric element are spring, and the spring supporting wavelength selection penetrates Reflector base.To by adjusting screw
Realize that wavelength selection is adjusted through the position of speculum, this is adjusted to floated adjustment.The pilot hole and guide post of the present embodiment
Guiding role is played when making wavelength selection through Reflector base with adjustment pedestal installation, to make wavelength selection penetrate speculum
While pedestal has certain adjustment surplus, and adjustment direction can be kept.The wavelength selection of the present embodiment penetrates speculum
Tabletting is set to wavelength selection and penetrates Reflector base both sides, not only realizes the firm work that speculum is penetrated to wavelength selection
With.It also assures that wavelength selection is not blocked through speculum, realizes passing through for transmitted light.The strip structure of the present embodiment
Adjustment link frame is set to the both sides of link, and the wavelength selection of reinforcing penetrates the stability of speculum.Corresponding two bar shaped knots
The adjustment link frame of structure, is arranged four elastomeric elements, which is set to the both ends of each adjustment link frame, realizes
The support of Reflector base is penetrated to wavelength selection.
Engaging lug is arranged through Reflector base both sides in the present embodiment wavelength selection, and wavelength selection is logical through speculum tabletting
The engaging lug is crossed to connect through Reflector base with wavelength selection.Sliding slot is arranged in the engaging lug, is fixed by tabletting fixing screws
The wavelength selection penetrates speculum tabletting, which adjusts the wavelength selection in sliding slot and penetrate speculum tabletting and wavelength selection
Through the distance between Reflector base wavelength is facilitated in the case where not dismantling the wavelength selection through speculum tabletting
Installation of the selection through reflecting optics.
By glue by guide post and pilot hole adhesion, adjusting screw and mounting hole adhesion.The glue is set to guide post and leads
To the Sheng plastic structure of hole junction.
The wavelength selection is rectangle through Reflector base, the link and the adjustment pedestal.
Further, further include：
The wavelength selection is arranged through Reflector base both sides penetrates what speculum tabletting was connect with the wavelength selection
Sliding slot is arranged in engaging lug, the engaging lug, and the sliding slot direction is perpendicular through Reflector base with the wavelength selection, described
Wavelength selection penetrates the distance between Reflector base by sliding slot adjustment through speculum tabletting with the wavelength selection.
Further, the temperature control unit is specifically used for：
Judge the real time temperature whether exceed threshold temperature, if so, adjust the refrigerating capacity of the semiconductor chilling plate,
The rotating speed of the flow of the liquid pump and the fan；
Judge whether the real time temperature after adjusting exceeds threshold temperature, if so, reducing the laser light source cell power；
Judge whether the real time temperature after attenuating power exceeds threshold temperature, if so, stopping power module work.
Specifically, a specific works pattern of temperature control system includes the following steps：
1, laser light source module, which shines, starts to work, and generates heat.
2, by temperature sensor, processing chip obtains temperature signal, just start when, since temperature is less high, at this time to
Control chip sends out instruction, can only start water pump and fan.
3, laser light source module power continues to increase, and processing chip detects laser light source module temperature by temperature sensor
When degree raising reaches laser light source module operating temperature upper limit T, at this point, processing chip, which can control chip, sends out instruction, start
Semiconductor chilling plate carries out forced refrigeration, and increases pump capacity and rotation speed of the fan according to data with existing model.
4, through repeatedly exporting and feedback regulation, temperature is finally made to stablize to normal operating conditions.
Temperature control system further includes overtemperature processing module, when the temperature that temperature sensor detects is more than laser light source mould
When the operating temperature upper limit T of group, overtemperature processing module is triggered, overtemperature processing module is sent out by modes such as prompt tone, prompt
Go out overtemperature alarm, meanwhile, if the display brightness of laser-projector is too high, force the display for reducing laser-projector bright
Degree, the power for reducing laser light source module can be with force disconnect laser-projector if reduce brightness still cannot be satisfied requirement
Power supply, avoid damage laser-projector.
By temperature control system, it can reach and laser light source module temperature is precisely controlled, laser diode is made to protect
Optimum Working is held, projected image is apparent, and prolongs the service life.
When laser-projector is colour projection, three color laser light source module of red, green, blue, different laser are generally included
Under light source module group and different configuration states, operating temperature upper limit T is different, and operating temperature upper limit T is as the case may be
Specific setting.Since red laser light source module group is to temperature requirement height, semiconductor chilling plate is generally arranged at red laser
In the cooling system of light source module group, but it is not limited to red diodes and can uses semiconductor chilling plate.
Laser light projection display system of the present invention, including semiconductor refrigerating unit and heat dissipation circulating system, and combination temperature is adopted
Collection unit and temperature control unit improve the heat dissipation performance of laser light source module, it might even be possible to realize the work item less than room temperature
Part realizes the automatic adjustment of entire cooling system working condition, extends the use of laser diode by temperature control system
Service life.In addition, the laser light source unit of this system realizes the luminous Accurate collimation function of laser diode.Provide laser throwing
The low energy consumption of shadow display system.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (8)
1. a kind of laser light projection display system, including：Wavelength selection penetrates speculum, the first lens subassembly, speculum, second thoroughly
Mirror assembly, optical tunnel, it is characterized in that, further including：
Laser light source unit, semiconductor refrigerating unit, heat dissipation circulating system, temperature collecting cell, temperature control unit；
The temperature collecting cell is used to acquire the real time temperature of the laser light source unit, and the real time temperature is sent to
The temperature control unit；
The temperature control unit controls the semiconductor refrigerating for receiving the real time temperature, and according to the real time temperature
Piece and the heat dissipation cycling element；
The laser light source unit includes：Laser diode, module pedestal, collimating mirror and collimation ring, the laser diode
It being arranged on the module pedestal in array, the collimation ring is set between the collimating mirror and the laser diode,
And the compression piece by being fixed on the module pedestal is pressed on the collimation ring, the semiconductor refrigerating unit is set to
The module pedestal back side；
The heat dissipation circulating system includes：Colling end, radiating end, liquid pump, circulation line, the colling end are set to described half
The hot junction of conductor refrigeration unit, the colling end are connect by the circulation line with the liquid pump, the liquid pump it is another
One end connects the radiating end.
2. system according to claim 1, which is characterized in that further include：
Wavelength selection penetrates reflector position adjustment unit, and the wavelength selection includes through reflector position adjustment unit：
Wavelength selection is through Reflector base, elastomeric element, adjustment pedestal, adjusting screw, adjustment link frame；
The wavelength selection through Reflector base bottom end be arranged link, the adjustment link be set to the link with
Between the adjustment pedestal, the link, the adjustment link frame and the adjustment pedestal are connected by the adjusting screw
It connects, elastomeric element is set between the adjustment link frame and the adjustment pedestal.
3. system according to claim 2, which is characterized in that further include：
It is penetrated through the wavelength selection in Reflector base for wavelength selection to be fixed on the wavelength selection through speculum
Speculum tabletting, the wavelength selection are set to the wavelength selection through speculum tabletting and penetrate Reflector base both sides, institute
It states adjustment link frame and is respectively arranged at the link both sides, the elastomeric element is set to the both ends of the link.
4. system according to claim 2, which is characterized in that the wavelength selection through Reflector base both sides setting with
The wavelength selection penetrates the engaging lug of speculum tabletting connection, and the engaging lug is arranged sliding slot, the sliding slot direction with it is described
Wavelength selection through Reflector base it is perpendicular, the wavelength selection through speculum tabletting by the sliding slot adjust with it is described
Wavelength selection is through the distance between Reflector base.
5. system according to claim 1, which is characterized in that the module pedestal is equipped with for installing two pole of the laser
Through-hole is arranged in the mounting hole of pipe, collimation ring and collimating mirror, the compression on piece, and the through-hole is corresponding with the collimating mirror, institute
It states through-hole edge and is provided with the compression protrusion for being directed toward the through-hole center.
6. system according to claim 5, which is characterized in that the semiconductor refrigerating unit includes：
Semiconductor chilling plate, the semiconductor chilling plate cold end are pasted on the module pedestal back side.
7. system according to claim 5, which is characterized in that the semiconductor refrigerating unit includes：
Semiconductor refrigerating stick, the semiconductor refrigerating stick are embedded in the module pedestal back side.
8. system according to claim 1, which is characterized in that the temperature control unit is specifically used for：
Judge whether the real time temperature exceeds threshold temperature, if so, adjusting the refrigerating capacity of the semiconductor chilling plate, described
The rotating speed of the flow of liquid pump and the fan；
Judge whether the real time temperature after adjusting exceeds threshold temperature, if so, reducing the laser light source cell power；
Judge whether the real time temperature after attenuating power exceeds threshold temperature, if so, stopping power module work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810405503.5A CN108663878A (en) | 2018-04-29 | 2018-04-29 | Laser light projection display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810405503.5A CN108663878A (en) | 2018-04-29 | 2018-04-29 | Laser light projection display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108663878A true CN108663878A (en) | 2018-10-16 |
Family
ID=63781526
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810405503.5A Pending CN108663878A (en) | 2018-04-29 | 2018-04-29 | Laser light projection display system |
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| CN111474814A (en) * | 2019-01-23 | 2020-07-31 | 中强光电股份有限公司 | Heat dissipation module and projection device |
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Application publication date: 20181016 |