CN102096289A - Mobile projector of semiconductor laser pumping micro solid green laser light source - Google Patents
Mobile projector of semiconductor laser pumping micro solid green laser light source Download PDFInfo
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- CN102096289A CN102096289A CN2009102732037A CN200910273203A CN102096289A CN 102096289 A CN102096289 A CN 102096289A CN 2009102732037 A CN2009102732037 A CN 2009102732037A CN 200910273203 A CN200910273203 A CN 200910273203A CN 102096289 A CN102096289 A CN 102096289A
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Abstract
The invention relates to a mobile projector of a semiconductor laser pumping micro solid green laser light source, which mainly comprises a light source part comprising a green light source, a red light source and a blue light source, a display system and a projection system. The projector is characterized in that the green light source in the light source part is a green laser beam emitted by a semiconductor laser pumping micro solid green laser; a reflection and transmission system, a beam expansion and collimation system and a light uniformization system are sequentially arranged between the light source part and the display system; the reflection and transmission system is used for combining the green laser beam, a red beam and a blue beam into color light; the beam expansion and collimation system is used for carrying out beam expansion and collimation on the color light emitted out by the reflection and transmission system; and the light uniformization system is used for regulating the color light subjected to beam expansion and collimation to form a uniform light spot with the same shape as a projection chip. In the invention, a laser source is used as a light source of the projection system, and the projector has the advantages of long service life, small volume, low power consumption, wide color gamut, high brightness, environmental protection, capability of batch production and low cost.
Description
(1) technical field: the present invention relates to the image documentation equipment technical field, especially a kind of semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine.
(2) background technology: along with the development of optics science and technology and projection display technique, can export the digital projector of high resolving power and big picture, become enterprise's PowerPoint, meetings and activities, education and training even become in the home entertaining, at an indispensable ring that provides on the vision imaging.Therefore, projector constantly lightly develops to high image quality, high brightness, volume from being born till now.
Existing projector uses the light that sends from light source to form image at display panel, by the projecting lens unit enlarged image and with this image projection on screen to satisfy the requirement of spectators for the large scale screen.Be disclosed technology contents in 02802270 the Chinese patent application as application number specifically: as shown in Figure 1, projector 100 comprises light source 102, silicon base plate liquid crystal (LCOS) display board 104 and projection element 106.Polarizer 110 is configured in the projector 100, and on the input light path 111 between light source 102 and the projection chip 104, and polarizer 112 is configured in the projector 100, on the output light path 113 between projection chip 104 and the projection element 106.Projector 100 also comprises cluster film transistor (TFT) driver 114, and this driver 114 receives one or more electric signal from signal source 116 inputs, and produces the corresponding signal that is used to control projection chip 104.
In operation, in signal source 116, handle vision signal, produce corresponding red, green and blue signal thus.This light source 102 is divided into the light of red, green and blue component with light, and the light of these components can form suitable polarized light in polarizer 110, subsequently, scan instruction according to the rules through input light path 111 sequential action on the projection chip.The red, green and blue component is scanned on whole projection chip 104, and the liquid crystal display on this plate (LCD) element makes each component by its red accordingly, green or blue signal modulation by the red, green and blue signal controlling that vision signal obtains.The component that to modulate at last is directed on the projection element 106 through output light path 113 and polarizer 112 then, and this projection element 106 produces the coloured image of watching 120 of raw video signal.
Yet existing projector adopts Halogen lamp LED as light source usually, but the shortcoming of Halogen lamp LED to be size bigger hindered optical projection system toward the development and the manufacturer of small size cost an arm and a leg, heat radiation is strong and mean lifetime short.Therefore gradually adopt light emitting diode (LED) to replace Halogen lamp LED, as the light source of projector, but the efficient of LED is low, and heat radiation is strong, and color is not abundant.
(3) summary of the invention: purpose of the present invention will solve exactly that existing projector projection light source volume is big, the life-span is short, efficient is low, heat radiation is strong, problems such as color is not abundant provide a kind of semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine.
For addressing the above problem, the invention provides a kind of semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine, mainly include light source part and display system and the optical projection system formed by green light source, red light source, blue-light source, it is characterized in that: the green light source in the described light source part is to adopt semiconductor laser pumping miniaturized solid-state green laser, transmitting green laser beam; And partly and between the display system be disposed with at light source:
The reflection and transmission system is combined into colorama with green laser beam, red beam and blue light beam;
Beam-expanding collimation system, the colorama that the reflection and transmission system is sent carries out beam-expanding collimation;
Even photosystem is regulated the colorama behind the beam-expanding collimation, forms and the identical shaped uniform light spots of projection chip;
And described display system, the colorama that the even photosystem of reception sends is modulated the formation coloured image;
The coloured image that optical projection system, receiving and displaying system are sent amplifies and is projected on the screen.
Optionally, the wavelength of described semiconductor laser pumping miniaturized solid-state green laser is 510 nanometers～540 nanometers.
Optionally, the green laser light source comprises: lasing light emitter, launch monochromatic first laser beam; Focusing system is assembled first laser beam that lasing light emitter sends; Pumping system carries out pumping to first laser beam of focusing system outgoing, forms second laser beam; Frequency doubling system carries out frequency multiplication with second laser beam that pumping system sends, and forms green laser beam.
Optionally, the wavelength of described first laser beam is 808 nanometers.The ripple of described second laser beam
Length is 1020 nanometers～1080 nanometers.Described pumping system is the Nd-doped yttrium vanadate laser crystal.Described frequency doubling system is a potassium titanyl oxygenic phosphate(KTP) crystal.
Optionally, described beam-expanding collimation system comprises that at least three lens are parallel and combines side by side that described lens are plano-convex lens or biconvex lens, and diameter is 6mm～12mm.
Optionally, include driving power in the described display system, the output electric signal; Projection chip (LCOS display board) receives the electric signal of driving power output and the colorama that filter system sends, through ovennodulation, and the output coloured image; Wherein said projection chip, this chip area are 12mm * 9mm;
Optionally, described reflection and transmission system comprises: completely reflecting mirror, receive the blue light beam that blue-light source sends, and carry out total reflection; First half-reflecting half mirror, the red beam that the reception red light source sends also reflects, and the blue light beam that the reception completely reflecting mirror sends also carries out transmission, and red beam and blue light beam are merged into a branch of light; Second half-reflecting half mirror receives the green laser beam that the green laser light source sends and also carries out transmission, receives the redness and the blue combined light beam of the first half-reflecting half mirror outgoing and reflects, and each light beam is merged into colorama.
Optionally, mobile projector machine of the present invention also comprises: convergence system, and the colorama that the even photosystem of reception sends is assembled, and forms the hot spot consistent with the projection die size; And the polarization spectro system, receive the colorama that convergence system is sent, reflex to display system; Receiving and displaying system is along the coloured image of receive direction outgoing again, and change is carried out transmission behind the polarization direction.
Optionally, described display system step display also comprises: driving power output electric signal; Projection chip (LCOS display board) receives the electric signal of driving power output and the colorama that filter system sends, through ovennodulation, and the output coloured image.
Compared with prior art, the present invention has the following advantages: adopted the light source of part LASER Light Source as the mobile projector machine, its life-span is long, and the volume low power consumption is low, and colour gamut is wide, and brightness height and environmental protection can manufacture, and cost is low.
(4) description of drawings:
Fig. 1 is the structural representation of existing projector;
Fig. 2 is a principle of work block scheme of the present invention;
Fig. 3 is an embodiment of the invention structural representation;
Fig. 4 is one of the structure of beam-expanding collimation system among a present invention synoptic diagram;
Fig. 5 is two synoptic diagram of the structure of beam-expanding collimation system among the present invention;
Fig. 6 is three synoptic diagram of the structure of beam-expanding collimation system among the present invention;
Fig. 7 is the structural representation of green laser light source of the present invention.
(5) embodiment:
Existing projector adopts usually and uses Halogen lamp LED as light source, but the shortcoming of Halogen lamp LED to be size bigger hindered optical projection system toward the development and the manufacturer of small size cost an arm and a leg, heat radiation is strong and mean lifetime short.Therefore gradually adopt light emitting diode (LED) to replace Halogen lamp LED, as the light source of optical projection system, but the efficient of LED is low, and heat radiation is strong, and color is not abundant.Therefore, the present invention adopts the light source of part lasing light emitter as projector, and its life-span is long, and the volume low power consumption is low, and colour gamut is wide, and brightness height and environmental protection can manufacture, and cost is low.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:
The present invention includes: green laser light source, transmitting green laser beam; Red light source, the emission red beam; Blue-light source, the emission blue light beam; The reflection and transmission system is combined into colorama with green laser beam, red beam and blue light beam; Beam-expanding collimation system, the colorama that the reflection and transmission system is sent carries out beam-expanding collimation; Even photosystem is regulated the colorama behind the beam-expanding collimation, forms and the identical shaped uniform light spots of projection chip; Display system, the colorama that the even photosystem of reception sends is modulated the formation coloured image; The coloured image that optical projection system, receiving and displaying system are sent amplifies and is projected on the screen.
The principle of carrying out projection by above-mentioned mobile projector machine as shown in Figure 2, execution in step S101 is by green laser light emitted green laser beam, by red light source emission red beam, by blue-light source emission blue light beam; Execution in step S102, reflection and transmission system export after green laser beam, red beam and blue light beam are combined into colorama; Execution in step S103, the colour that beam-expanding collimation system reception reflection and transmission system sends carries out beam-expanding collimation and output; Execution in step S104, even photosystem receive colorama behind the beam-expanding collimation regulate form with the identical shaped uniform light spots of projection chip after export; Execution in step S105, display system receives colorama that even photosystem sends and modulates and form coloured image and output; Execution in step S106, the coloured image that optical projection system is sent display system amplifies and is projected on the screen.
Fig. 3 is the example structure synoptic diagram of mobile projector machine of the present invention.It comprises: green laser light source 200, transmitting green laser beam; Red light source 201, the emission red beam; Blue-light source 202, the emission blue light beam; Reflection and transmission system 203 is combined into colorama with green laser beam, red beam and blue light beam; Beam-expanding collimation system 208, the colorama that reflection and transmission system 203 is sent carries out beam-expanding collimation; Even photosystem 210 is regulated the colorama behind the beam-expanding collimation, forms and the identical shaped uniform light spots of projection chip; Display system 216, the colorama that the even photosystem 210 of reception sends is modulated the formation coloured image; Optical projection system 218, the coloured image that receiving and displaying system 216 sends amplifies and is projected on the screen 220.
In the present embodiment, described green laser light source 200 is a semiconductor laser pumping miniaturized solid-state green laser, and its wavelength is 510 nanometers～540 nanometers, specifically can be 532 nanometers.Described blue-light source 202 and red light source 201 are to adopt LED.
As shown in Figure 7, describedly comprise as green laser light source 200 with the diode-end-pumped solid state laser: lasing light emitter 200a, launch monochromatic first laser beam; Focusing system 200b assembles first laser beam that lasing light emitter 200a sends; Pumping system 200c carries out pumping to first laser beam of focusing system 200b outgoing, forms second laser beam; Frequency doubling system 200d carries out frequency multiplication with second laser beam that pumping system 200c sends, and forms green laser beam.
In the present embodiment, focusing system 200b is the focus lamp group that comprises at least two lens, and described lens lens can be biconvex lens, also can be plano-convex lenss.
The wavelength of first laser beam that described lasing light emitter 200a sends is 808 nanometers.Described pumping system is Nd-doped yttrium vanadate (Nd:YVO4) laser crystal; The wavelength of second laser beam that forms after the pumping is 1020 nanometers～1080 nanometers, is specially 1064 nanometers.Described frequency doubling system is potassium titanium oxide phosphate (KTP) crystal.
Described reflection and transmission system 203 comprises: completely reflecting mirror 206 receives the blue light beam that blue-light source 202 sends and carries out total reflection; First half-reflecting half mirror 205, the red beam that reception red light source 201 sends also reflects, and the blue light beam that reception completely reflecting mirror 206 sends also carries out transmission, and the red beam and the blue light beam of output are merged into a branch of light; Second half-reflecting half mirror 204 receives the green laser beam that green laser light source 200 sends and also carries out transmission, receives the redness and the blue combined light beam of first half-reflecting half mirror, 205 outgoing and reflects, and each light beam is merged into colorama.
Beam-expanding collimation system among the present invention can have multiple version, for example:
One of structure comprises at least three biconvex lens 208b combinations as shown in Figure 4 in the beam-expanding collimation system 208, wherein, and diameter 6mm～12mm of biconvex lens 208b.
Structure two as shown in Figure 5, comprise at least three plano-convex lens 208a combinations in the beam-expanding collimation system 208, wherein, diameter 6mm～12mm of plano-convex lens 208a.
Structure three as shown in Figure 6, comprise at least three combination of lensess in the beam-expanding collimation system 208, wherein can one be biconvex lens 208b, all the other two is plano-convex lens 208a, its arrangement can independent assortment; Can also be two biconvex lens 208b, all the other one be plano-convex lens 208a.Diameter 6mm～12mm of biconvex lens 208b and plano-convex lens 208a.
In the present embodiment, can plate one deck anti-reflection film on the said lens, in order to increase the transmitance of laser.
Display system described in the present embodiment 216 comprises: driving power 216b, output electric signal; Projection chip (LCOS display board) 216a receives the electric signal of driving power 216b output and the colorama that even photosystem 210 sends, through ovennodulation, and the output coloured image.Wherein, driving power 216b also comprises: signal source 216b1, output electric signal; Driver 216b2 receives one or more electric signal from signal source 216b1 input, and produces the electric signal that is used to control projection chip (LCOS display board) 216a.
The projection chip is arranged in display system 216, and its area is 12mm * 9mm, and it also is feasible suitably increasing or dwindle certainly.
In the present embodiment, the material of even photosystem 210 can be quartz or glass bar etc., and its length is 30mm, and the cross section is 4mm * 3mm.Even photosystem 210 can make the colorama that receives reach even distribution in preset range self-energy, light intensity.
Green laser light source 200 transmitting green laser beam, red light source 201 emission red beams, blue-light source 202 emission blue light beams; The blue light beam that completely reflecting mirror 206 reception blue-light sources 202 in the reflection and transmission system 203 send carries out exporting after the total reflection; The red beam that first half-reflecting half mirror, 205 reception red light sources 201 in the reflection and transmission system 203 send also reflects, receive the blue light beam that completely reflecting mirror 206 sends simultaneously and carry out transmission, the red beam and the blue light beam of transmission of reflection are merged into a branch of light export; The green laser beam that second half-reflecting half mirror, 204 reception green laser light sources 200 in the reflection and transmission system 203 send is also carried out transmission, receive the redness and the blue combined light beam of first half-reflecting half mirror, 205 outgoing simultaneously and reflect, and each light beam is merged into colorama output; The colorama that beam-expanding collimation system 208 receptions first half-reflecting half mirror 205 sends carries out beam-expanding collimation and output; Even photosystem 210 receives the colorama behind the beam-expanding collimation and regulates, and forms and the identical shaped uniform light spots of projection chip; Signal source 216b1 output electric signal in the display system 216; The electric signal that driver 216b2 received signal source 216b1 in the display system 216 sends is also handled the signal of projection chip (LCOS display board) 216a that is formed for controlling in the display system 216; Projection chip (LCOS display board) 216a receives the electric signal of driver 216b2 and the colorama that even photosystem 210 sends, and modulates and forms coloured image and output; The coloured image that optical projection system 218 is sent display system 216 amplifies and is projected on the screen 220.
In the present embodiment, as shown in Figure 7, comprise with the solid state laser of diode-end-pumped principle of work: launch monochromatic first laser beam by lasing light emitter 200a as green laser light source 200; First laser beam that focusing system 200b reception lasing light emitter 200a sends is assembled output; First laser beam of the pumping system 200c collectiong focusing 200b of system outgoing is carried out pumping, exports after forming second laser beam; Second laser beam that frequency doubling system 200d reception pumping system 200c sends is carried out frequency multiplication, exports after the formation green laser beam.
The present embodiment first preferred scheme is: be placed with convergence system 212 in above-mentioned optical projection system, the colorama that the even photosystem 210 of reception sends is assembled, and forms the hot spot consistent with the projection die size; Polarization spectro system 214 receives the colorama that convergence system 212 is sent, and reflexes to display system 216; Receiving and displaying system 216 is along the coloured image of receive direction ejaculation again, and change is carried out transmission behind the polarization direction.
In the present embodiment, convergence system 212 comprises lens at least, and described lens can be biconvex lens, and diameter is 6mm～12mm.Described polarization spectro system can directly adopt cube glass, is two halves along the diagonal angle subdivision, and one again bonds.
Green laser light source 200 transmitting green laser beam, red light source 201 emission red beams, blue-light source 202 emission blue light beams; The blue light beam that completely reflecting mirror 206 reception blue-light sources 202 in the reflection and transmission system 203 send carries out exporting after the total reflection; The red beam that first half-reflecting half mirror, 205 reception red light sources 201 in the reflection and transmission system 203 send also reflects, receive the blue light beam that completely reflecting mirror 206 sends simultaneously and carry out transmission, the red beam and the blue light beam of transmission of reflection are merged into a branch of light export; The green laser beam that second half-reflecting half mirror, 204 reception green laser light sources 200 in the reflection and transmission system 203 send is also carried out transmission, receive the redness and the blue combined light beam of first half-reflecting half mirror, 205 outgoing simultaneously and reflect, and each light beam is merged into colorama output; The colorama that beam-expanding collimation system 208 receptions first half-reflecting half mirror 205 sends carries out beam-expanding collimation and output; Even photosystem 210 receives the colorama behind the beam-expanding collimation and regulates, and forms and the identical shaped uniform light spots of projection chip; Convergence system 212 receives the colorama that even photosystem 210 sends and assembles, and exports after forming the hot spot consistent with the projection die size; Polarization spectro system 214 receives the colorama that convergence system 210 is sent, reflection output; Signal source 216b1 output electric signal in the display system 216; The electric signal that driver 216b2 received signal source 216b1 in the display system 216 sends is also handled the signal of projection chip (LCOS display board) 216a that is formed for controlling in the display system 216; Projection chip (LCOS display board) 216a receives the electric signal of driver 216b2 and the colorama that polarization spectro system 214 sends, and modulates to form coloured image and output; Polarization spectro system 214 receiving and displaying systems 216 carry out transmission output along the coloured image of receive direction outgoing behind the change polarization direction; The coloured image that optical projection system 218 is sent polarization spectro system 214 amplifies and is projected on the screen 220.
Though the present invention with preferred embodiment openly as above; but it is not to be used for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible change and modification, so protection scope of the present invention should be as the criterion with the scope that claim of the present invention was defined.
Claims (10)
1. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine, mainly include light source part and display system and the optical projection system formed by green light source, red light source, blue-light source, it is characterized in that: the green light source in the described light source part is to adopt semiconductor laser pumping miniaturized solid-state green laser, transmitting green laser beam; And partly and between the display system be disposed with at light source:
The reflection and transmission system is combined into colorama with green laser beam, red beam and blue light beam;
Beam-expanding collimation system, the colorama that the reflection and transmission system is sent carries out beam-expanding collimation;
Even photosystem is regulated the colorama behind the beam-expanding collimation, forms and the identical shaped uniform light spots of projection chip;
And described display system, the colorama that the even photosystem of reception sends is modulated the formation coloured image;
The coloured image that described optical projection system, receiving and displaying system are sent amplifies and is projected on the screen.
2. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 1 is characterized in that: the wavelength of described semiconductor laser pumping miniaturized solid-state green laser emission light beam is 510 nanometers～540 nanometers.
3. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 1 and 2, it is characterized in that: described semiconductor laser pumping miniaturized solid-state green laser comprises:
Lasing light emitter is launched monochromatic first laser beam;
Focusing system is assembled first laser beam that lasing light emitter sends;
Pumping system carries out pumping to first laser beam of focusing system outgoing, forms second laser beam;
Frequency doubling system carries out frequency multiplication with second laser beam that pumping system sends, and forms green laser beam.
4. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 3, it is characterized in that: the wavelength of described first laser beam is 808 nanometers; The wavelength of described second laser beam is 1020 nanometers～1080 nanometers.
5. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 3, it is characterized in that: described pumping system is the Nd-doped yttrium vanadate laser crystal.
6. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 3, it is characterized in that: described frequency doubling system is a potassium titanyl oxygenic phosphate(KTP) crystal.
7. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 1 is characterized in that: described beam-expanding collimation system comprises that at least three lens are parallel and combines side by side; Described lens are plano-convex lens or biconvex lens, and diameter is 6mm～12mm.
8. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 1 is characterized in that: comprise in the display system and contain driving power, the output electric signal; The projection chip receives the electric signal of driving power output and the colorama that filter system sends, through ovennodulation, and the output coloured image; Wherein said projection chip, area are 12mm * 9mm;
9. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 1 is characterized in that: described reflection and transmission system comprises:
Completely reflecting mirror receives the blue light beam that blue-light source sends, and carries out total reflection;
First half-reflecting half mirror, the red beam that the reception red light source sends also reflects, and the blue light beam that the reception completely reflecting mirror sends also carries out transmission, and red beam and blue light beam are merged into a branch of light;
Second half-reflecting half mirror receives the green laser beam that the green laser light source sends and also carries out transmission, receives the redness and the blue combined light beam of the first half-reflecting half mirror outgoing and reflects, and each light beam is merged into colorama.
10. semiconductor laser pumping miniaturized solid-state green laser light source mobile projector machine according to claim 1 is characterized in that: add between even photosystem and display system:
Convergence system, the colorama that the even photosystem of reception sends is assembled, and forms the hot spot consistent with the projection die size;
The polarization spectro system receives the colorama that convergence system is sent, and reflexes to display system; Receiving and displaying system is along the coloured image of receive direction outgoing again, and change is carried out transmission behind the polarization direction.
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| CN2009102732037A CN102096289A (en) | 2009-12-15 | 2009-12-15 | Mobile projector of semiconductor laser pumping micro solid green laser light source |
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| CN2009102732037A CN102096289A (en) | 2009-12-15 | 2009-12-15 | Mobile projector of semiconductor laser pumping micro solid green laser light source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799057A (en) * | 2012-08-07 | 2012-11-28 | 华中科技大学 | High-brightness mixed white light source using solid green laser, red LED and blue LED |
| CN106410590A (en) * | 2016-10-27 | 2017-02-15 | 全普光电科技(上海)有限公司 | Multi-chip laser tube and laser beam generation method |
| CN110879505A (en) * | 2020-01-03 | 2020-03-13 | 深圳市锐思华创技术有限公司 | High-brightness laser scanning projection module |
-
2009
- 2009-12-15 CN CN2009102732037A patent/CN102096289A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799057A (en) * | 2012-08-07 | 2012-11-28 | 华中科技大学 | High-brightness mixed white light source using solid green laser, red LED and blue LED |
| CN106410590A (en) * | 2016-10-27 | 2017-02-15 | 全普光电科技(上海)有限公司 | Multi-chip laser tube and laser beam generation method |
| CN110879505A (en) * | 2020-01-03 | 2020-03-13 | 深圳市锐思华创技术有限公司 | High-brightness laser scanning projection module |
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Application publication date: 20110615 |