CN101770074A - Laser system, working method and projection system - Google Patents
Laser system, working method and projection system Download PDFInfo
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- CN101770074A CN101770074A CN200810205379A CN200810205379A CN101770074A CN 101770074 A CN101770074 A CN 101770074A CN 200810205379 A CN200810205379 A CN 200810205379A CN 200810205379 A CN200810205379 A CN 200810205379A CN 101770074 A CN101770074 A CN 101770074A
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Abstract
The invention relates to a laser system, a working method and a projection system. The laser system comprises a laser source, a collimation system and a self-focusing system, wherein the laser source transmits a monochromatic laser beam; the collimation system collimates the laser beam transmitted by the laser source; and the self-focusing system focuses the laser beam which is emergent from the collimation system. The invention adopts the laser source as the light source of the projection system, and the laser source has long service life, small volume, low power consumption, wide colour gamut, high brightness, environmental protection, easy mass production and low cost. In addition, the self-focusing system is adopted in the laser system to focus the laser beam, the focusing capability is stronger, light spots are smaller, energy is more concentrated, and the laser efficiency is higher.
Description
Technical field
The present invention relates to a kind of optical projection system and projecting method, relate in particular to Optical Maser System and method of work, optical projection system.
Background technology
Development along with optics science and technology and projection display technique, can export the digital projection system 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, optical projection system constantly lightly develops to high image quality, high brightness, volume from being born till now.
Existing optical projection system 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, optical projection system 100 comprises light source 102, silicon base plate liquid crystal (LCOS) display board 104 and projection element 106.Polarizer 110 is configured on the optical projection system 100, and on the input light path 111 between light source 102 and the LCOS display board 104, and polarizer 112 is configured in the system 100, on the output light path 113 between LCOS display board 104 and the projection element 106.Optical projection system 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 LCOS display board 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 LCOS display board.The red, green and blue component is scanned on whole LCOS display board 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 optical projection system adopts usually 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.
Summary of the invention
The problem that the present invention solves provides a kind of laser instrument and method of work, optical projection system and projecting method, prevents that the projection light source volume is big, the life-span is short, efficient is low, and heat radiation is strong.
For addressing the above problem, the invention provides a kind of Optical Maser System, comprising: lasing light emitter, emission monochromatic laser beam; Colimated light system, the laser beam that lasing light emitter is sent collimates; Autofocus system, the emitting laser Shu Jinhang of collimation system focuses on.
Optionally, described lasing light emitter is a semiconductor laser.The wavelength of described semiconductor laser is 630 nanometers～670 nanometers.
Optionally, described colimated light system is cylindrical lens or at least three combination of lensess, and diameter is 1mm～3mm.
Optionally, described autofocus system is a GRIN Lens, and diameter is 1mm～3mm, and long is 5mm～6mm.
The present invention also provides a kind of optical projection system that comprises above-mentioned laser system.
The invention provides a kind of method of work of Optical Maser System, comprising: the emission monochromatic laser beam; With collimate back emission of monochromatic laser beam; The monochromatic laser beam that receives after process collimates focuses on, and emission.
Optionally, the wavelength of described semiconductor laser is 630 nanometers～670 nanometers.
Compared with prior art, the present invention has the following advantages: adopt the light source of lasing light emitter as optical projection system, 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.In addition, in laser system, adopt autofocus system that laser beam is focused on, focusing power is stronger, makes hot spot littler, and energy is more concentrated, and lasing efficiency is higher.
Description of drawings
Fig. 1 is the structural representation of existing optical projection system;
The embodiment process flow diagram of Fig. 2 for adopting Optical Maser System of the present invention to carry out work;
Fig. 3 is the example structure synoptic diagram of Optical Maser System of the present invention;
Fig. 4 a to Fig. 4 c is the structural representation of colimated light system in the Optical Maser System of the present invention;
Fig. 5 is the example structure synoptic diagram of optical projection system of the present invention.
Embodiment
Existing optical projection system adopts usually 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 lasing light emitter as optical projection system, 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.In addition, in laser system, adopt autofocus system that laser beam is focused on, focusing power is stronger, makes hot spot littler, and energy is more concentrated, and lasing efficiency is higher.
A kind of Optical Maser System comprises: lasing light emitter, emission monochromatic laser beam; Colimated light system, the monochromatic laser beam that lasing light emitter is sent collimates; Autofocus system, the emitting laser Shu Jinhang of collimation system focuses on.
The method of carrying out work by above-mentioned Optical Maser System as shown in Figure 2, execution in step S101, emission monochromatic laser beam; Execution in step S102 is with collimate back emission of monochromatic laser beam; Execution in step S103, the monochromatic laser beam that receives after process collimates focuses on, and emission.
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.
Fig. 3 is the example structure synoptic diagram of Optical Maser System of the present invention.As shown in Figure 3, Optical Maser System comprises: lasing light emitter 200a, emission monochromatic laser beam; Colimated light system 200b, the laser beam that lasing light emitter 200a is sent collimates; Autofocus system 200c, collimation system 200 emitting laser Shu Jinhang focus on.
In the present embodiment, lasing light emitter 200a is a semiconductor laser, and its wavelength is 630 nanometers～670 nanometers, specifically can preferred 650 nanometers.
In the present embodiment, described colimated light system is cylindrical lens or at least three combination of lensess, and diameter is 1mm～3mm.
If colimated light system 200b is a combination of lenses, shown in Fig. 4 a, comprise at least three biconvex lens 200b1 combinations among the colimated light system 200b so, wherein, diameter 1mm～3mm of biconvex lens 200b2, the preferred 2mm of present embodiment.
Shown in Fig. 4 b, comprise at least three plano-convex lens 200b2 combinations among the colimated light system 200b, wherein, diameter 1mm～3mm of plano-convex lens 200b2, the preferred 2mm of present embodiment.
Shown in Fig. 4 c, comprise at least three combination of lensess among the colimated light system 200b, wherein can one be biconvex lens 200b1, all the other two is plano-convex lens 200b2, its arrangement can independent assortment; Can also be two biconvex lens 200b1, all the other one be plano-convex lens 200b2.Diameter 1mm～3mm of biconvex lens 200b1 and plano-convex lens 200b2, preferred 2mm.
Can be coated with one deck anti-reflection film on the said lens, increase the transmitance of laser.
In the present embodiment, described autofocus system is a GRIN Lens, and diameter is 1mm～3mm, and long is 5mm～6mm.
Continuation is with reference to figure 3, and the working method of above-mentioned Optical Maser System is: by lasing light emitter 200a emission monochromatic laser beam; Emission after the laser beam that colimated light system 200b sends lasing light emitter 200a collimates; Autofocus system 200c receives through the monochromatic laser beam behind the colimated light system 200b collimation and focuses on, and emission.
Fig. 5 is the example structure synoptic diagram of optical projection system of the present invention.Optical projection system comprises: red laser system 200, emission red laser beam; Green light source 201, the transmitting green light beam; Blue-light source 202, the emission blue light beam; Reflection and transmission system 203 is combined into colorama with red laser beam, green 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; Projection element 218, the coloured image that receiving and displaying system 216 sends amplifies and is projected on the screen 220.
In the present embodiment, as shown in Figure 3, described red laser system 200 comprises: lasing light emitter 200a, emission monochromatic laser beam; Colimated light system 200b, the laser beam that lasing light emitter 200a is sent collimates; Autofocus system 200c, collimation system 200 emitting laser Shu Jinhang focus on.Wherein the wavelength of the laser beam sent of lasing light emitter is 630 nanometers～670 nanometers, specifically can preferred 650 nanometers.
In the present embodiment, described blue-light source 202 and green light source 201 can be laser instruments, also can be LED.
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 green beam that reception green light source 201 sends also reflects, and the blue light beam that reception completely reflecting mirror 206 sends also carries out transmission, and the green beam and the blue light beam of output are merged into a branch of light; Second half-reflecting half mirror 204 receives the red laser beam that red laser system 200 sends and also carries out transmission, receives the green and the blue combined light beam of first half-reflecting half mirror, 205 outgoing and reflects, and each light beam is merged into colorama.
In addition, the scheme that is not limited to the foregoing description that is used of completely reflecting mirror 206, first half-reflecting half mirror 205, second half-reflecting half mirror 204 and blue-light source 202, green light source 201 and red laser system 200 can freely be arranged in pairs or groups.
Described display system 216 comprises: driving power 216b, output electric signal; 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 LCOS display board 216a.
The projection chip is arranged in projection element 218, and its area is 12mm * 9mm.
In the present embodiment, the material of even photosystem 210 can be quartz or glass 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.
As shown in Figure 5, red laser system 200 emission red laser beams, green light source 201 transmitting green light 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 green beam that first half-reflecting half mirror, 205 reception green 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 green beam and the blue light beam of transmission of reflection are merged into a branch of light export; The red laser beam that second half-reflecting half mirror, 204 reception red laser systems 200 in the reflection and transmission system 203 send also carries out transmission, receive the green 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; Electric signal that driver 216b2 received signal source 216b1 in the display system 216 sends and the signal of handling the LCOS display board 216a that is formed for controlling in the display system 216; 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 projection element 218 sends display system 216 amplifies and is projected on the screen 220.
Continuation is with reference to figure 5, and the scheme of another embodiment 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 outgoing 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.
As shown in Figure 5, red laser system 200 emission red laser beams, green light source 201 transmitting green light 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 green beam that first half-reflecting half mirror, 205 reception green 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 green beam and the blue light beam of transmission of reflection are merged into a branch of light export; The red laser beam that second half-reflecting half mirror, 204 reception red laser systems 200 in the reflection and transmission system 203 send also carries out transmission, receive the green 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; Electric signal that driver 216b2 received signal source 216b1 in the display system 216 sends and the signal of handling the LCOS display board 216a that is formed for controlling in the display system 216; 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 projection element 218 sends 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 (8)
1. an Optical Maser System is characterized in that, comprising:
Lasing light emitter, the emission monochromatic laser beam;
Colimated light system, the laser beam that lasing light emitter is sent collimates;
Autofocus system, the emitting laser Shu Jinhang of collimation system focuses on.
2. according to the described Optical Maser System of claim 1, it is characterized in that described lasing light emitter is a semiconductor laser.
3. according to the described Optical Maser System of claim 2, it is characterized in that the wavelength of described semiconductor laser is 630 nanometers～670 nanometers.
4. according to the described Optical Maser System of claim 1, it is characterized in that described colimated light system is cylindrical lens or at least three combination of lensess, diameter is 1mm～3mm.
5. according to the described Optical Maser System of claim 1, it is characterized in that described autofocus system is a GRIN Lens, diameter is 1mm～3mm, and long is 5mm～6mm.
6. one kind comprises the optical projection system of Optical Maser System according to claim 1.
7. the method for work of an Optical Maser System is characterized in that, comprising:
The emission monochromatic laser beam;
With collimate back emission of monochromatic laser beam;
The monochromatic laser beam that receives after process collimates focuses on, and emission.
8. according to the method for work of the described Optical Maser System of claim 7, it is characterized in that the wavelength of described laser beam is 630 nanometers～670 nanometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810205379A CN101770074A (en) | 2008-12-31 | 2008-12-31 | Laser system, working method and projection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810205379A CN101770074A (en) | 2008-12-31 | 2008-12-31 | Laser system, working method and projection system |
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| CN101770074A true CN101770074A (en) | 2010-07-07 |
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| CN200810205379A Pending CN101770074A (en) | 2008-12-31 | 2008-12-31 | Laser system, working method and projection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955340A (en) * | 2011-08-29 | 2013-03-06 | 鸿富锦精密工业（深圳）有限公司 | Light source device of projector |
| CN106093497A (en) * | 2016-07-28 | 2016-11-09 | 国网山东省电力公司惠民县供电公司 | A kind of refraction meter copying device |
| CN111562715A (en) * | 2020-05-25 | 2020-08-21 | 深圳市点睛创视技术有限公司 | Composite collimating device and system for micro projection |
-
2008
- 2008-12-31 CN CN200810205379A patent/CN101770074A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955340A (en) * | 2011-08-29 | 2013-03-06 | 鸿富锦精密工业（深圳）有限公司 | Light source device of projector |
| CN106093497A (en) * | 2016-07-28 | 2016-11-09 | 国网山东省电力公司惠民县供电公司 | A kind of refraction meter copying device |
| CN111562715A (en) * | 2020-05-25 | 2020-08-21 | 深圳市点睛创视技术有限公司 | Composite collimating device and system for micro projection |
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Application publication date: 20100707 |