CN101153936B - Light source used for laser display - Google Patents
Light source used for laser display Download PDFInfo
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- CN101153936B CN101153936B CN 200610113574 CN200610113574A CN101153936B CN 101153936 B CN101153936 B CN 101153936B CN 200610113574 CN200610113574 CN 200610113574 CN 200610113574 A CN200610113574 A CN 200610113574A CN 101153936 B CN101153936 B CN 101153936B
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Abstract
The present invention relates to a light source device for laser display system, in particular to a light source device which can satisfy the needs of large screen laser display and high power; the invention comprises RGB tricolor laser light source and a beam device; the laser light source of each fundamental color consists of at least two lasers; the light source device for laser display system breaks through the system framework formed by RGB tricolor lasers in the prior laser display; as the invention adopts an incoherent beam technology, the output power of the light source can be improved through increasing the number of the laser and single laser module can be dismantled and replaced freely, thereby achieving the modularized design of the whole light source device, improving the reliability and maintainability of light source, reducing the cost of light source system and satisfying the need of superlarge laser display in order to develop towards the directions of large screen and high brightness.
Description
Technical field
The present invention relates to a kind of light supply apparatus that is used for laser display system, particularly a kind of light supply apparatus that can satisfy Large Screen Laser Display and high power requirement.
Background technology
Laser display is the great-leap-forward development of display technique, is the significant development direction in demonstration field.Laser display has bigger gamut range, and laser is line spectrum, has high color saturation, can show the truest, the abundantest, the gay colours of nature, because laser direction is good, can realize higher display resolution, be the display technique of future generation after white and black displays, colored demonstration, numeral show.
In the prior art, RGB (RGB) the tricolor laser light source that is used for laser display all adopts the separate unit laser instrument, as document: " all-solid state laser color video display technique " (in October, 2004 that people such as the Liu Weiqi of Changchun ray machine institute of the Chinese Academy of Sciences delivered in " liquid crystal and demonstration " in 2004, the 19th volume, the 5th phase, the 325-328 page or leaf) disclosed technology in, adopt the light source of the separate unit laser instrument of RGB three looks respectively as laser display, utilize synthetic mirror group, close bundle with a branch of in addition by synthetic mirror group again after two bundles that earlier will be wherein are synthetic a branch of.
The red-green-blue LASER Light Source that prior art is used for laser display all adopts the deficiency of separate unit laser instrument to be: (1) people wish the demonstration of laser display realization giant-screen, high brightness, but the output power of separate unit laser instrument is limited, increase along with screen, the brightness of display frame reduces gradually, is difficult to satisfy the brightness requirement of Large Screen Laser Display; (2) there is the shortcoming of poor reliability separately in high power red turquoise tricolor laser device as light source, and any laser instrument goes wrong and all will cause whole display system not work, thereby has limited the development of laser display.
Summary of the invention
The objective of the invention is to overcome the defective of the light supply apparatus of above-mentioned existing laser display system, thereby provide a kind of high power, high stability, be applicable to the light supply apparatus of Large Screen Laser Display.
The light supply apparatus that is used for laser display provided by the invention comprises RGB tricolor laser light source and beam combination device, it is characterized in that, the LASER Light Source of every kind of primary colours is by at least two laser constitutions.
Further, described beam combination device comprises a plurality of convergent lenses and a plurality of optical fiber, and the light beam that each laser instrument sends is coupled into single or multifiber through each self-corresponding convergent lens, and the output terminal with whole optical fiber is packaged into a branch of fibre bundle then.
Further, described beam combination device also comprises a sleeve pipe, is used for the output terminal of whole optical fiber is packaged into a branch of fibre bundle;
Further, described beam combination device comprises a plurality of convergent lenses and a plurality of optical fiber, the light beam that the laser instrument of arbitrary primary colours sends in the RGB three primary colours is coupled into single or multifiber through a convergent lens, light beam that all the other primary colours laser instruments send is coupled into single or multifiber through each self-corresponding convergent lens, and the output terminal of whole optical fiber is packaged into a branch of fibre bundle.
Further, the input end face of described optical fiber is plane, hemisphere face or circular conical surface.
Further, described beam combination device comprises also and closes the beam convergence lens that the light that described fibre bundle sends is coupled into output optical fibre through second convergent lens.
Further, the LASER Light Source of described every kind of primary colours is respectively by two laser constitutions that send p polarized light and s polarized light separately; Described beam combination device comprises first, second, third polarization beam splitter at the laser instrument light-emitting window place that is arranged on every kind of primary colours, being arranged on first on the emitting light path of the second and the 3rd polarization beam splitter closes the look mirror and is arranged on the 3rd polarization beam splitter and described first closes second on the look mirror emitting light path and close the look mirror; The light of two laser instrument emissions of every kind of primary colours is coupled as a branch of coupling light through polarization beam splitter, the coupling light of wherein any two kinds of primary colours is closed the coupling of look mirror through first becomes mixed light, and described mixed light is coupled into a branch of light through second coupling light of closing look mirror and another kind of primary colours.
Further, between described laser instrument and beam combination device, also be provided with orthopedic systems and colimated light system.
Further, described orthopedic systems is post lens, globe lens or the optical system that realizes shaping.
Further, described colimated light system is globe lens or the optical system that realizes collimation.
Further, described laser instrument is semiconductor laser or solid state laser.
Further, described laser instrument is the laser instrument of same type or is dissimilar laser instruments.
Laser display of the present invention has been broken through original laser display RGB tricolor laser constitution system framework with light source, adopt incoherent beam combination technology, just can improve the output power of light source by the quantity that increases laser instrument, and the random dismounting and change of single laser module, realized the modular design of whole light source device, the reliability and the maintenanceability of light source have been improved, reduced the cost of light-source system, can satisfy the requirement of jumbotron laser display, it is developed to giant-screen, high brightness direction.
Description of drawings
Fig. 1 is the high power laser fiber coupling device that RGB three look laser all adopt solid state laser
Fig. 2 is the high power laser fiber coupling device that red laser adopts semiconductor laser
Fig. 3 adopts the high-power laser coupling device of PBS
Fig. 4 adopts the another kind of high-power laser coupling device of PBS
Embodiment
The present invention will be further explained and explanation below in conjunction with specific embodiment.
Embodiment 1
As shown in Figure 1, the light supply apparatus that is used for laser display, light source comprises the red laser light source of being made up of n ruddiness solid state laser, represent with R1-Rn among Fig. 1, the green laser light source of forming by m green glow solid state laser, represent with G1-Gn among Fig. 1, with form the blue laser light source by k blue light solid state laser device, represent with B1-Bn among Fig. 1, n wherein, m, ratio between the k should be set according to the output power and the Show Color ratio requirement of each laser instrument, this is adequate to those skilled in the art, and selecting n=6 platform wavelength such as present embodiment is 671nm, output power is the ruddiness solid state laser R1-R6 of 5W; M=3 platform wavelength is that 532nm, output power are the green glow solid state laser G1-G3 of 1W; And k=4 platform wavelength is that 473nm, output power are the blue light solid state laser device B1-B4 of 1W.
The convergence apparatus of present embodiment comprises a plurality of convergent lens LR1-LRn, LG1-LGm and LB1-LBk, optical fiber FR1-FRn, FG1-FGm and FB1-FBk, and sleeve pipe 4 closes beam convergence lens 5 and single coupled fiber 6; Described laser instrument is positioned at a side of each self-corresponding convergent lens, the input end of described optical fiber is arranged on the corresponding convergent lens opposite side focus, sleeve pipe 4 is encapsulated into the output terminal of all optical fiber together, and be arranged at a described side of closing beam convergence lens 5, the described single coupled fiber 6 of opposite side focal point settings that closes beam convergence lens 5.
The equidirectional parallel placement of these solid state lasers, the light that each laser instrument sends is at first behind shaping of extender lens (not shown) and collimation lens (not shown) collimation, become directional light, incide convergent lens LR1-LR3 then respectively, on LG1-LG3 and the LB1-LB4, optical fiber FR1-FR3 is set on the focus of described convergent lens opposite side, the input end of FG1-FG3 and FB1-FB4, the end face of described optic fibre input end can be the plane, hemisphere face or circular conical surface, the output terminal of all optical fiber is encapsulated into together with sleeve pipe 4, and the white hybrid laser that obtains is as the light source of laser display; Also the output beam of the fibre bundle that sleeve pipe 4 can be encapsulated is coupled into single coupled fiber 6 after convergent lens 5 focuses on, and the mixed white light of single coupled fiber 6 outputs directly is used as the light source of laser display.
Embodiment 2
As shown in Figure 2, the light supply apparatus that is used for laser display, light source comprises the red laser light source of being made up of n red light semiconductor laser, represent with R1-Rn among Fig. 2, the green laser light source of forming by m green glow solid state laser, represent with G1-Gn among Fig. 2, with the blue laser light source of forming by k blue light solid state laser device, represent with B1-Bn among Fig. 2, n wherein, m, ratio between the k should be set according to the output power and the Show Color ratio requirement of each laser instrument, this is adequate to those skilled in the art, and in present embodiment, selecting for use n=112 to prop up wavelength is 635nm, output power is the red light semiconductor laser R1-R112 of 350mW; M=12 platform wavelength is that 532nm, output power are that green glow solid state laser G1-G12 and the k=3 platform wavelength of 1W is that 457nm, output power are the blue light solid state laser device B1-B3 of 3W, the placement that all walks abreast of all laser instruments.
The convergence apparatus of present embodiment, the a plurality of convergent lens LG1-LG12 and the LB1-LB3 that comprise corresponding described green glow of difference and blue light solid state laser device, the optical fiber FG1-FG12 and the FB1-FB3 of respectively corresponding described a plurality of convergent lenses, the single convergent lens 23 of corresponding red light semiconductor laser R1-R112, corresponding to the optical fiber FR of single convergent lens 23, and sleeve pipe 4; The input end of described optical fiber FR, FG1-FG12 and FB1-FB3 is arranged on the corresponding convergent lens opposite side focus, and sleeve pipe 4 is encapsulated into the output terminal of all optical fiber together.
Present embodiment also comprises an orthopedic systems and colimated light system.
Because semiconductor laser is very big with the angle of divergence (about 6 °-10 °) difference of horizontal direction in the angle of divergence (about 30 °-40 °) of vertical direction, so the orthopedic systems of semiconductor laser and colimated light system can be selected two globe lenss or a GRIN Lens, present embodiment is selected GRIN Lens 2 for use, as shown in Figure 2, the light that each red light semiconductor laser sends by each self-corresponding GRIN Lens shaping and collimation after single convergent lens 23 is coupled into single or multifiber FR, thereby realize the coupling of ruddiness.
The light that the solid state laser of blue light and green laser light source sends becomes directional light through extender lens and collimation lens (not shown), on the direction vertical with described parallel beam, convergent lens LG1-LG12 and LB1-LB3 are set, the input end of optical fiber is set on the focus of described convergent lens opposite side, the input end face of described optical fiber can be the plane, hemisphere face or circular conical surface, described directional light focuses on and is coupled into optical fiber through convergent lens in the focus of opposite side, the output terminal of the RGB three primary colours respectively being restrainted output optical fibre is encapsulated into together with sleeve pipe 4, and the mixture of white laser of outgoing is as the light source of laser display.
Embodiment 3
In the high power laser display light source that present embodiment provides, the RGB three-color light source is respectively by two parallel laser constitutions of placing, its emergent light is respectively p polarized light and s polarized light, as shown in Figure 3, R1 and R2 are that wavelength 660nm, output power are the red light semiconductor laser of 12W, G1 and G2 are that wavelength 532nm, output power are the green glow solid state laser of 3W, B1 and B2 are that wavelength 457nm, output power are the blue light solid state laser device of 2W, wherein, R1, G1 and B1 emitted laser are the P polarized light, and R2, G2 and B2 emitted laser are the S polarized light.
Among Fig. 3, close beam system and comprise that mainly first polarization beam splitter 11, second polarization beam splitter 12, the 3rd polarization beam splitter 13 and first close look mirror 9, second and close look mirror 10.
Polarization beam splitter (Polarizing Beam Splitter, be called for short PBS), by two right-angle prism combinations, on faying face, utilize the interference deposit PBS film of 45 degree Brewster corner conditions, the polarization direction P polarisation parallel with the polarization beam splitter plane of incidence can expeditely see through the PBS film, and the polarization direction S polarisation vertical with the polarization beam splitter plane of incidence then reflected by the PBS film.
The polarization direction of red laser R1 and R2 emission laser as shown in the figure, the P polarisation that R1 sends impinges perpendicularly on first polarization beam splitter 11, after transmission, do not change direction, the S polarisation that R2 sends vertically enters first polarization beam splitter 11 behind red mirror 14 deviations, after reflection, direction changes 90 degree, and the ruddiness that sends of R1 and R2 is coupled to output together thus; Described red mirror 14 can be plane mirror or total reflection prism.
The emergent light direction of green (light) laser G1 and G2 is parallel with the emergent light of described red laser, the polarization direction of green (light) laser G1 and G2 emission laser as shown in the figure, the P polarisation that G1 sends impinges perpendicularly on second polarization beam splitter 12, after transmission, do not change direction, the S polarisation that G2 sends vertically enters second polarization beam splitter 12 behind green glow catoptron 15 deviations, after reflection, direction changes 90 degree, and the green glow that sends of G1 and G2 is coupled to output together thus; Described green glow catoptron 15 can be plane mirror or total reflection prism.
The emergent light direction of blue laser B1 and B2 is perpendicular to the emergent light of described red laser, the polarization direction of blue laser B1 and B2 emission laser as shown in the figure, the P polarisation that B1 sends impinges perpendicularly on the 3rd polarization beam splitter 13, after transmission, do not change direction, the S polarisation that B2 sends vertically enters the 3rd polarization beam splitter 13 behind blu-ray reflection mirror 16 deviations, after reflection, direction changes 90 degree, and the blue light that sends of blue laser B1 and B2 is coupled to output together thus; Described blu-ray reflection mirror 16 can be plane mirror or total reflection prism.
Described first closes the transmission film that look mirror 9 surfaces are coated with blue light and the reflectance coating of 45 degree green glows, green glow after blue light after the described coupling and the coupling incides first from first both sides of closing the look mirror with 45 degree respectively and closes look mirror 9, obtain the coupled light beam of green glow and blue light, this coupled light beam is again through the second synthetic a branch of white light outgoing of ruddiness of closing after look mirror 10 and the described coupling, as the light source of laser display, described second surface of closing look mirror 10 is coated with the transmission film of ruddiness and the reflectance coating of 45 degree blue green lights.
As shown in Figure 4, present embodiment has removed catoptron on the basis of embodiment 3, adopt laser instrument R2, G2 are provided with R1, G1 are vertical with B1 respectively with B2, thereby make the s polarized light directly impinge perpendicularly in the corresponding polarized light separator, other parts are identical with embodiment 3.
Claims (2)
1. a light supply apparatus that is used for laser display comprises RGB tricolor laser light source and beam combination system, it is characterized in that,
The LASER Light Source of each primary colours is by two parallel laser constitutions of placing in the described RGB tricolor laser light source, and the emergent light of described two parallel laser instruments of placing is respectively p polarized light and s polarized light; Wherein, the wavelength of first red light semiconductor laser (R1) and second red light semiconductor laser (R2) is that 660nm, output power are 12W; The wavelength of the first green glow solid state laser (G1) and the second green glow solid state laser (G2) is that 532nm, output power are 3W; The wavelength of first blue light solid state laser device (B1) and second blue light solid state laser device (B2) is that 457nm, output power are 2W, wherein first red light semiconductor laser (R1), the first green glow solid state laser (G1) and first blue light solid state laser device (B1) emergent light are the p polarized light, and second red light semiconductor laser (R2), the second green glow solid state laser (G2) and second blue light solid state laser device (B2) emergent light are the s polarized light;
Described beam combination system comprises that first polarization beam splitter (11), second polarization beam splitter (12), the 3rd polarization beam splitter (13) and first close look mirror (9) and second and close look mirror (10); Wherein, the P polarisation that sends at first red light semiconductor laser (R1) impinges perpendicularly on first polarization beam splitter (11), after transmission, do not change direction, the S polarisation that second red light semiconductor laser (R2) sends vertically enters first polarization beam splitter (11) behind red mirror (14) deviation, after reflection, change of polarized direction 90 degree, the ruddiness that sends of first red light semiconductor laser (R1) and second red light semiconductor laser (R2) is coupled to together and exports thus;
Light-emitting window place at the first green glow solid state laser (G1) and the second green glow solid state laser (G2) is provided with second polarization beam splitter (12), the P polarisation that the first green glow solid state laser (G1) sends impinges perpendicularly on second polarization beam splitter (12), after transmission, do not change direction, the S polarisation that the second green glow solid state laser (G2) sends vertically enters second polarization beam splitter (12) behind green glow catoptron (15) deviation, after reflection, change of polarized direction 90 degree, the green glow that sends of the first green glow solid state laser (G1) and the second green glow solid state laser (G2) is coupled to together and exports thus;
The 3rd polarization beam splitter (13) that is provided with at the light-emitting window place of first blue light solid state laser device (B1) and second blue light solid state laser device (B2), the P polarisation that first blue light solid state laser device (B1) sends impinges perpendicularly on the 3rd polarization beam splitter (13), after transmission, do not change direction, the S polarisation that second blue light solid state laser device (B2) sends vertically enters the 3rd polarization beam splitter (13) behind blu-ray reflection mirror (16) deviation, after reflection, change of polarized direction 90 degree, the blue light that sends of first blue light solid state laser device (B1) and second blue light solid state laser device (B2) is coupled to together and exports thus.
2. by the described light supply apparatus that is used for laser display of claim 1, it is characterized in that described red mirror (14), green glow catoptron (15) and blu-ray reflection mirror (16) are plane mirror or total reflection prism.
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| CN 200610113574 CN101153936B (en) | 2006-09-30 | 2006-09-30 | Light source used for laser display |
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| CN 200610113574 CN101153936B (en) | 2006-09-30 | 2006-09-30 | Light source used for laser display |
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| CN101153936B true CN101153936B (en) | 2011-11-09 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398347A (en) * | 2013-08-12 | 2013-11-20 | 上海市激光技术研究所 | Laser beam light combining and dodging device used for full color laser computer moving head light |
| CN103490267A (en) * | 2013-09-27 | 2014-01-01 | 深圳极光世纪科技有限公司 | Laser module |
| CN104062770A (en) * | 2014-01-15 | 2014-09-24 | 南京长青激光科技有限责任公司 | Device for reducing laser speckle effect |
| CN104777626A (en) * | 2015-04-27 | 2015-07-15 | 中国科学院光电研究院 | Device and method for inhibiting laser speckles and laser display projection system |
| CN105321412A (en) * | 2015-11-21 | 2016-02-10 | 苏州科技学院 | Demonstration method and device for white laser generation principle |
| CN106785871A (en) * | 2017-03-08 | 2017-05-31 | 严伟 | Synthesize the device and method of white light based on RGB semiconductor laser |
| CN111796475B (en) * | 2019-04-09 | 2022-03-08 | 成都理想境界科技有限公司 | Light source beam combining module, projection display device and projection display equipment |
| CN111458891A (en) * | 2020-05-07 | 2020-07-28 | 青岛海泰新光科技股份有限公司 | Combined method for realizing multi-channel color combination light source |
Citations (3)
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| CN1119482A (en) * | 1993-02-03 | 1996-03-27 | 尼托公司 | Methods and apparatus for image projection |
| JP2005338520A (en) * | 2004-05-28 | 2005-12-08 | Nichia Chem Ind Ltd | Image display apparatus |
| CN1750622A (en) * | 2005-09-30 | 2006-03-22 | 黄革雄 | Laser projector |
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2006
- 2006-09-30 CN CN 200610113574 patent/CN101153936B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119482A (en) * | 1993-02-03 | 1996-03-27 | 尼托公司 | Methods and apparatus for image projection |
| JP2005338520A (en) * | 2004-05-28 | 2005-12-08 | Nichia Chem Ind Ltd | Image display apparatus |
| CN1750622A (en) * | 2005-09-30 | 2006-03-22 | 黄革雄 | Laser projector |
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