CN110361913A - Laser diode module and laser projection system - Google Patents
Laser diode module and laser projection system Download PDFInfo
- Publication number
- CN110361913A CN110361913A CN201810317422.XA CN201810317422A CN110361913A CN 110361913 A CN110361913 A CN 110361913A CN 201810317422 A CN201810317422 A CN 201810317422A CN 110361913 A CN110361913 A CN 110361913A
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- Prior art keywords
- smooth curved
- light
- curved reflector
- laser
- lens
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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
- G03B21/20—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)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A kind of laser diode module, for coupleeing integrating rod for laser beam, the laser diode module includes the array of source being arranged successively, lens array, beam processor and light diffuser.The array of source includes multiple laser diodes, and the lens array includes multiple collimation lenses, and each laser diode and each collimation lens correspond.The beam processor is for being compressed into approximately parallel first light beam for collimated light beam export from the lens array or be compressed into the focus on light beam with a predetermined angle, the sectional area of the facula area of the sectional area of first light beam or the focus on light beam less than the integrating rod.The present invention also provides a kind of laser projection systems.Collimated laser beam is compressed into smaller output beam section by beam processor by above-mentioned laser diode module and laser projection system, and which simplify light path designs, can reduce the usage quantity of relay lens, improve optical efficiency.
Description
Technical field
The present invention relates to laser technology field more particularly to a kind of laser diode module and include the laser diode mould
The laser projection system of block.
Background technique
Now, as by the image of personal computer picture, video image and the image data for being stored in storage card etc.
Etc. the image projection device for projecting to screen, data projector is widely used.In such projector, previous mainstream is used
The discharge lamp of high brightness is as light source.In recent years, using the semiconductor light emittings such as light emitting diode (LED) and laser diode (LD)
Component is becoming more as the exploitation and motion of the luminescence component of light supply apparatus.
Since the output effect of single laser light source is limited, in order to reach even beyond tradition ultra high power light source it is bright
Degree, the quantity of laser light source can proportional increase, and laser light source is understood laser light source in array fashion to design to facilitate
It is arranged, and respective collimation lens of arranging in pairs or groups is by light source collimationization.The straight area to arrangement and longitudinal arrangement of laser light source
Bigger, opposite light path design is more complicated, and the relay lens assemblies quantity needed is also more, so that the laser light source of final molding
Module size is also relatively bigger, leads to cost raising and the assembly process is complicated, simultaneously because number of optical is excessive, reduce
Optical efficiency.
Summary of the invention
In view of this, it is necessary to provide a kind of laser diode module and laser projection system, which simplify light path design,
The usage quantity that relay lens can be reduced, improves optical efficiency.
An embodiment of the present invention provides a kind of laser diode module, for coupleeing integrating rod for laser beam, institute
Stating laser diode module includes the array of source, lens array and light diffuser being arranged successively, and the light diffuser closes on institute
Integrating rod setting is stated, the array of source includes multiple laser diodes, and the lens array includes multiple collimation lenses, each
The laser diode and each collimation lens correspond.The laser diode module further includes being located at the lens
Beam processor between array and the light diffuser, the beam processor are used for flat by what is exported from the lens array
Row laser beam compression is at approximately parallel first light beam or is compressed into the focus on light beam with a predetermined angle, first light beam
Sectional area or the facula area of the focus on light beam are less than the sectional area of the integrating rod.
Preferably, stating beam processor includes the first smooth curved reflector and the second smooth curved reflector, first light
The reflecting surface of curved reflector is towards the reflecting surface with the described second smooth curved reflector towards on the contrary, the first smooth curved surface is anti-
It penetrates mirror and closes on the lens array setting, the second smooth curved reflector closes on the light diffuser setting, first light
The focal length of curved reflector is less than the focal length of the described second smooth curved reflector.
Preferably, the beam processor includes the first smooth curved reflector, the second smooth curved reflector and afocal lens,
The reflecting surface of the first smooth curved reflector is towards the reflecting surface with the described second smooth curved reflector towards on the contrary, described the
One smooth curved reflector closes on the lens array setting, and the afocal lens closes on the light diffuser and is arranged, and described second
Light curved reflector between the described first smooth curved reflector and the afocal lens, the first smooth curved reflector
Focal length is less than the focal length of the described second smooth curved reflector.
Preferably, the distance between the light diffuser and the integrating rod are less than pre-determined distance, so that the light expands
The output beam for dissipating device is all coupled to the integrating rod.
An embodiment of the present invention also provides a kind of laser projection system, including projection lens, optical modulator, two pole of laser
Tube module and lighting system, the laser diode module are used to couple the lighting system, the illumination for laser beam
System includes integrating rod, and the laser diode module includes the array of source, lens array and light diffuser being arranged successively, institute
It states light diffuser and closes on the integrating rod setting, the array of source includes multiple laser diodes, and the lens array includes
Multiple collimation lenses, each laser diode and each collimation lens correspond.The laser diode module
It further include the beam processor between the lens array and the light diffuser, the beam processor is used for will be from institute
The collimated light beam for stating lens array output is compressed into approximately parallel first light beam or is compressed into the focusing with a predetermined angle
Light beam, the sectional area of first light beam or the facula area of the focus on light beam are less than the sectional area of the integrating rod.
Preferably, the beam processor include the first smooth curved reflector and the second smooth curved reflector, described first
The reflecting surface of light curved reflector is towards the reflecting surface with the described second smooth curved reflector towards on the contrary, the first smooth curved surface
Reflecting mirror closes on the lens array setting, and the second smooth curved reflector closes on the light diffuser and is arranged, and described first
The focal length of light curved reflector is less than the focal length of the described second smooth curved reflector.
Preferably, the beam processor includes the first smooth curved reflector, the second smooth curved reflector and afocal lens,
The reflecting surface of the first smooth curved reflector is towards the reflecting surface with the described second smooth curved reflector towards on the contrary, described the
One smooth curved reflector closes on the lens array setting, and the afocal lens closes on the light diffuser and is arranged, and described second
Light curved reflector between the described first smooth curved reflector and the afocal lens, the first smooth curved reflector
Focal length is less than the focal length of the described second smooth curved reflector.
Preferably, the distance between the light diffuser and the integrating rod are less than pre-determined distance, so that the light expands
The output beam for dissipating device is all coupled to the integrating rod.
Preferably, the lighting system has a best angle of light, first light beam and the collimated light beam shape
At first angle, the sum of diffusion angle of the first angle and the light diffuser is equal to the best angle of light.
Preferably, the lighting system has a best angle of light, the focus on light beam and the collimated light beam shape
At second angle, the sum of diffusion angle of the second angle and the light diffuser is equal to the best angle of light.
Compared with prior art, above-mentioned diode (led) module and laser projection system are swashed collimation by hyperboloidal mirror
Light laser beam compression arranges in pairs or groups what the matching output of light disperser was supported to lighting system arrival end at smaller output beam section
Incident angle can have so that being implemented without too many optical module can directly be coupled to laser light source in lighting system
The diminution optical module size and optic path distance of effect, reduce the quantity of required optical module, improve optical efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the laser projection system of an embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the laser diode module in first embodiment of the invention.
Fig. 3 is the structural schematic diagram of the laser diode module in second embodiment of the invention.
Fig. 4 is the structural schematic diagram of the laser diode module in third embodiment of the invention.
Main element symbol description
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Referring to Fig. 1, a kind of laser projection system 100, can project frame out using laser beam.The laser projection
System 100 includes projection lens 10, optical modulator 20, laser diode module 30 and lighting system 40.The projection lens 10,
The optical modulator 20 and the lighting system 40 can be designed using existing laser projection module, herein no longer in detail
It states.
Please refer to Fig. 2-4, the laser diode module 30 can be used as the light source of the laser projection system 100
Module.The laser diode module 30 is used to couple the lighting system 40 for laser beam, the lighting system 40 to
It less include an integrating rod 402, the integrating rod 402 can be cuboid or square shape, can be with inside the integrating rod 402
For solid or hollow integrating rod, the integrating rod 402 to be shaped as one uniformly for the light beam for passing through light diffuser 308 again
Output light source.The laser diode module 30 of stating includes at the array of source 302, lens array 304, light beam being arranged successively
Manage device 306 and light diffuser 308.The light diffuser 308 preferably closes on the integrating rod 402 and is arranged, the light diffuser 308
It can be dynamic and turn the either static component of part (Diffuser Wheel), the light diffuser 308 is described for that will pass through
Treated light beam the is diffused processing of beam processor 306, and by the beam Propagation after DIFFUSION TREATMENT to the integral
Stick 402.The array of source 302 includes multiple laser diodes 3020, and the lens array 304 includes multiple collimation lenses
3040, each laser diode 3020 is corresponded with each collimation lens 3040, i.e., the described laser diode
3020 quantity is preferably identical as the quantity of the collimation lens 3040.The lens array 304 is used for the array of source
302 laser issued carry out collimation processing.The beam processor 306 is parallel for will export from the lens array 304
Laser beam compression is at approximately parallel first light beam or is compressed into the focus on light beam with a predetermined angle θ 11, first light beam
Sectional area or the focus on light beam facula area be less than the integrating rod 402 sectional area.
As shown in Fig. 2, the collimated light beam exported from the lens array 304 is compressed into closely by the beam processor 306
It is less than the sectional area of the integrating rod 402 like the sectional area of parallel the first light beam and first light beam.First light beam
First angle θ 1 is formed between the collimated light beam of the lens array 304 output, when the first angle θ 1 is less than preset value
When, first light beam can be regarded as less parallel.For example, when the first angle θ 1 is less than 5 °, described
One light beam is identified as approximately parallel light beam.
As shown in figure 4, the collimated light beam exported from the lens array 304 is compressed into tool by the beam processor 306
There is the facula area of the focus on light beam of the predetermined angle θ 11 and the focus on light beam to be less than the sectional area of the integrating rod 402.
Second angle θ 2, the second angle θ 2 are formed between the collimated light beam that the focus on light beam and the lens array 304 export
The preferably greater than described first angle θ 1.The predetermined angle θ 11 can be set according to practice scene, for example,
The predetermined angle θ 11 can be 30 °.
Fig. 2 is identical with the structure of laser diode module 30 shown in Fig. 4, but the reflection of the beam processor 306 of the two
Parameter has differences.In Fig. 2 and Fig. 4, the beam processor 306 includes the first smooth curved reflector 3060 and the second light
Curved reflector 3062, reflecting surface direction and the described second smooth curved reflector 3062 of the first smooth curved reflector 3060
Reflecting surface towards on the contrary, the first smooth curved reflector 3060 closes on the lens array 304 is arranged, second light is bent
Face reflecting mirror 3062 closes on the light diffuser 308 and is arranged, and the focal length of the first smooth curved reflector 3060 is less than described the
The focal length of two smooth curved reflectors 3062.The first smooth curved reflector 3060, the second smooth curved reflector 3062 can be
Parabolic type curvature reflecting mirror or aspheric curvature reflecting mirror.
As shown in figure 3, the collimated light beam exported from the lens array 304 is first compressed by the beam processor 306
Focus on light beam, then approximately parallel second light beam is converted by the aggregation light beam.The sectional area of second light beam is less than described
The sectional area of the sectional area of integrating rod 402 and second light beam is less than the sectional area of the first light beam shown in Fig. 2.In Fig. 3,
The beam processor 306 includes the first smooth curved reflector 3060, the second smooth curved reflector 3062 and afocal lens 3064.
The reflecting surface of the first smooth curved reflector 3060 is towards the reflecting surface with the described second smooth curved reflector 3062 towards phase
Instead, the described first smooth curved reflector closes on the lens array 304 and is arranged, and the afocal lens 3064 closes on the light diffusion
Device 308 is arranged, and the second smooth curved reflector 3062 is located at the described first smooth curved reflector 3060 and the afocal lens
Between 3064, the focal length of the first smooth curved reflector 3060 is less than the focal length of the described second smooth curved reflector 3062.
In one embodiment, in order to enable the light beam that light diffuser 308 exports can all be coupled into the integrating rod
402, the distance between the light diffuser 308 and the integrating rod 402 are preferably smaller than pre-determined distance D1, and then do not have light loss
It loses.In Fig. 2-Fig. 4, the distance between the light diffuser 308 and the integrating rod 402 are less than or equal to pre-determined distance
D1 may insure that coupling light effect is best.
In one embodiment, when laser projection system 100 selectes the optical modulator 20 of a model, 20 ruler of optical modulator
Very little size will determine and limit the optics coupling light ability of the laser projection system 100, through the principle that etendue is constant
It is found that the lighting system 40, which will have, presets best angle of light θin.The first angle θ 1 and the light diffuser
The sum of 308 3 (not shown) of diffusion angle θ is preferably equal to described to preset best angle of light θin(θin=θ 1+ θ 3).It is described
The sum of diffusion angle θ 3 of second angle θ 2 and the light diffuser 308 is preferably equal to described to preset best angle of light θin(θ
In=θ 2+ θ 3).
Collimated laser beam is compressed by above-mentioned laser diode module and laser projection system by hyperboloidal mirror
Smaller output beam section, the incident angle that collocation light disperser matching output is supported to lighting system arrival end, from
And being implemented without too many optical module can directly be coupled to laser light source in lighting system, can effectively reduce optics
Size of components and optic path distance, reduce the quantity of required optical module, improve optical efficiency.
It will be apparent to those skilled in the art that the reality of production can be combined with scheme of the invention according to the present invention and inventive concept
Border needs to make other and is altered or modified accordingly, and these change and adjustment all should belong to range disclosed in this invention.
Claims (10)
1. a kind of laser diode module, for coupleeing integrating rod for laser beam, the laser diode module include according to
Array of source, lens array and the light diffuser of secondary arrangement, the light diffuser close on the integrating rod setting, the light source battle array
Column include multiple laser diodes, and the lens array includes multiple collimation lenses, each laser diode and each institute
State collimation lens one-to-one correspondence, it is characterised in that: the laser diode module further include be located at the lens array with it is described
Beam processor between light diffuser, the beam processor are used to compress the collimated light beam exported from the lens array
At approximately parallel first light beam or it is compressed into the focus on light beam with a predetermined angle, the sectional area of first light beam or institute
The facula area for stating focus on light beam is less than the sectional area of the integrating rod.
2. laser diode module as described in claim 1, it is characterised in that: the beam processor includes the first smooth curved surface
Reflecting mirror and the second smooth curved reflector, reflecting surface direction and the described second smooth camber reflection of the first smooth curved reflector
For the reflecting surface of mirror towards on the contrary, the first smooth curved reflector closes on the lens array setting, the second smooth curved surface is anti-
It penetrates mirror and closes on the light diffuser setting, the focal length of the first smooth curved reflector is less than the described second smooth curved reflector
Focal length.
3. laser diode module as described in claim 1, it is characterised in that: the beam processor includes the first smooth curved surface
Reflecting mirror, the second smooth curved reflector and afocal lens, the reflecting surface direction and described second of the first smooth curved reflector
The reflecting surface of light curved reflector is towards on the contrary, the first smooth curved reflector closes on the lens array setting, the nothing
Focus lens close on light diffuser setting, the second smooth curved reflector be located at the described first smooth curved reflector with it is described
Between afocal lens, the focal length of the first smooth curved reflector is less than the focal length of the described second smooth curved reflector.
4. laser diode module as claimed in any one of claims 1-3, it is characterised in that: the light diffuser with it is described
The distance between integrating rod is less than pre-determined distance, so that the output beam of the light diffuser is all coupled to the integral
Stick.
5. a kind of laser projection system, including projection lens, optical modulator, laser diode module and lighting system, described to swash
Optical diode module is used to couple the lighting system for laser beam, and the lighting system includes integrating rod, the laser
Diode (led) module includes the array of source, lens array and light diffuser being arranged successively, and the light diffuser closes on the integral
Stick setting, the array of source includes multiple laser diodes, and the lens array includes multiple collimation lenses, each described sharp
Optical diode and each collimation lens correspond, it is characterised in that: the laser diode module further includes being located at institute
The beam processor between lens array and the light diffuser is stated, the beam processor is used for will be defeated from the lens array
Collimated light beam out is compressed into approximately parallel first light beam or is compressed into the focus on light beam with a predetermined angle, and described first
The sectional area of light beam or the facula area of the focus on light beam are less than the sectional area of the integrating rod.
6. laser projection system as claimed in claim 5, it is characterised in that: the beam processor includes that the first smooth curved surface is anti-
Penetrate mirror and the second smooth curved reflector, reflecting surface direction and the described second smooth curved reflector of the first smooth curved reflector
Reflecting surface towards on the contrary, the first smooth curved reflector closes on lens array setting, the second smooth camber reflection
Mirror closes on the light diffuser setting, and the focal length of the first smooth curved reflector is less than the coke of the described second smooth curved reflector
Away from.
7. laser projection system as claimed in claim 5, it is characterised in that: the beam processor includes that the first smooth curved surface is anti-
Penetrate mirror, the second smooth curved reflector and afocal lens, reflecting surface direction and second light of the first smooth curved reflector
The reflecting surface of curved reflector is towards on the contrary, the first smooth curved reflector closes on the lens array setting, the no coke
Lens close on the light diffuser setting, and the second smooth curved reflector is located at the described first smooth curved reflector and the nothing
Between focus lens, the focal length of the first smooth curved reflector is less than the focal length of the described second smooth curved reflector.
8. the laser projection system as described in claim 5-7 any one, it is characterised in that: the light diffuser and the product
The distance between stick is divided to be less than pre-determined distance, so that the output beam of the light diffuser is all coupled to the integrating rod.
9. laser projection system as claimed in claim 5, it is characterised in that: the lighting system has a best angle of light
Degree, first light beam and the collimated light beam form first angle, the angle of flare of the first angle and the light diffuser
The sum of degree is equal to the best angle of light.
10. laser projection system as claimed in claim 5, it is characterised in that: the lighting system has a best light incident
Angle, the focus on light beam and the collimated light beam form second angle, the diffusion of the second angle and the light diffuser
The sum of angle is equal to the best angle of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810317422.XA CN110361913A (en) | 2018-04-10 | 2018-04-10 | Laser diode module and laser projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810317422.XA CN110361913A (en) | 2018-04-10 | 2018-04-10 | Laser diode module and laser projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110361913A true CN110361913A (en) | 2019-10-22 |
Family
ID=68212713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810317422.XA Pending CN110361913A (en) | 2018-04-10 | 2018-04-10 | Laser diode module and laser projection system |
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| Country | Link |
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| CN (1) | CN110361913A (en) |
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| CN1755422A (en) * | 2004-09-30 | 2006-04-05 | 精工爱普生株式会社 | Projector |
| CN101091384A (en) * | 2005-03-07 | 2007-12-19 | 卡西欧计算机株式会社 | Light source unit and projector apparatus |
| CN102540679A (en) * | 2012-02-22 | 2012-07-04 | 海信集团有限公司 | Light source device, light source generation method and laser projector comprising light source device |
| CN102591120A (en) * | 2012-02-22 | 2012-07-18 | 海信集团有限公司 | Light source device, light source generation method and laser projection machine comprising light source device |
| CN104049445A (en) * | 2013-03-11 | 2014-09-17 | 深圳市绎立锐光科技开发有限公司 | Light emitting device and a projection system |
| US20160091783A1 (en) * | 2013-04-20 | 2016-03-31 | Appotronic China Corporation | Light-emitting device and projection system |
| CN106707671A (en) * | 2016-12-29 | 2017-05-24 | 海信集团有限公司 | Laser projection system |
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2018
- 2018-04-10 CN CN201810317422.XA patent/CN110361913A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388409A (en) * | 2001-05-25 | 2003-01-01 | 大億科技股份有限公司 | Light-collecting assembly with high light-collecting efficiency and display with the same assembly |
| CN1755422A (en) * | 2004-09-30 | 2006-04-05 | 精工爱普生株式会社 | Projector |
| CN101091384A (en) * | 2005-03-07 | 2007-12-19 | 卡西欧计算机株式会社 | Light source unit and projector apparatus |
| CN102540679A (en) * | 2012-02-22 | 2012-07-04 | 海信集团有限公司 | Light source device, light source generation method and laser projector comprising light source device |
| CN102591120A (en) * | 2012-02-22 | 2012-07-18 | 海信集团有限公司 | Light source device, light source generation method and laser projection machine comprising light source device |
| CN104049445A (en) * | 2013-03-11 | 2014-09-17 | 深圳市绎立锐光科技开发有限公司 | Light emitting device and a projection system |
| US20160091783A1 (en) * | 2013-04-20 | 2016-03-31 | Appotronic China Corporation | Light-emitting device and projection system |
| CN106707671A (en) * | 2016-12-29 | 2017-05-24 | 海信集团有限公司 | Laser projection system |
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