CN101771884A - Projection system and projection method - Google Patents
Projection system and projection method Download PDFInfo
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- CN101771884A CN101771884A CN200810205374A CN200810205374A CN101771884A CN 101771884 A CN101771884 A CN 101771884A CN 200810205374 A CN200810205374 A CN 200810205374A CN 200810205374 A CN200810205374 A CN 200810205374A CN 101771884 A CN101771884 A CN 101771884A
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Abstract
The invention discloses a projection system and a projection method. The projection system comprises a blue laser light source for emitting blue laser beams, a green light source for emitting green light beams, a red light source for emitting red light beams, a reflecting and transmission system, a beam expanding collimation system, a light homogenizing system, a display system, and a projection element, wherein the reflecting and transmission system is used for combining the blue laser beams, the green light beams and the red light beams into color light; the beam expanding collimation system is used for performing beam expanding and collimation on the color light emitted by the reflecting and transmission system; the light homogenizing system is used for adjusting the color light after the beam expanding and collimation to form uniform light spots; the display system is used for receiving the color light emitted by the light homogenizing system for modulation to form a color image; the projection element is used for receiving, amplifying and projecting the color image sent by the display system onto a screen; and a projection chip in the projection element has the same shape as the uniform light spots emergent from the light homogenizing system. The laser source is adopted as the light source of the projection system, so that the projection system has the advantages of long service life, small volume, low power consumption, wide color gamut, high brightness, environmental protection, batch production and low cost.
Description
Technical field
The present invention relates to a kind of optical projection system and projecting method, relate in particular to and adopt optical projection system and the projecting method of laser as light source.
Background technology
Development along with optics science and technology and projection display technique, can export the digital projection system of high-resolution 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 floater, 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 panel 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 panel 104, and polarizer 112 is configured in the system 100, on the output light path 113 between LCOS display panel 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 signals of telecommunication from signal source 116 inputs, and produces the corresponding signal that is used to control LCOS display panel 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 polarised light in polarizer 110, subsequently, scan instruction according to the rules through input light path 111 sequential action on the LCOS display panel.The red, green and blue component is scanned on whole LCOS display panel 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, thermal radiation is strong and average life span 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 thermal radiation is strong, and color is not abundant.
Summary of the invention
The problem that the present invention solves provides a kind of optical projection system and projecting method, prevents that the projection light source volume is big, the life-span is short, efficient is low, and thermal radiation is strong.
For addressing the above problem, the invention provides a kind of optical projection system, comprising: blue laser light source, emission blue laser beam; Green light source, the transmitting green light beam; Red light source, the emission red beam; The reflection and transmission system is combined into colourama with blue laser beam, green beam and red beam; Beam-expanding collimation system, the colourama that the reflection and transmission system is sent carries out beam-expanding collimation; Even photosystem is regulated the colourama behind the beam-expanding collimation, forms uniform light spots; Display system, the colourama that the even photosystem of reception sends is modulated the formation coloured image; The coloured image that projection element, receiving and displaying system send amplifies and is projected on the screen, and wherein the projection chip in the projection element is identical with the uniform light spots shape of even photosystem outgoing.
Optionally, the described blue laser light source solid state laser that is diode-end-pumped.The wavelength of described blue laser light source is 450 nanometers～480 nanometers.
Optionally, blue 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, second laser beam that pumping system is sent carries out frequency multiplication, forms blue laser beam; Output system receives the blue laser beam that frequency doubling system is exported, and focuses on.
Optionally, the wavelength of described first laser beam is 808 nanometers.The wavelength of described second laser beam is 900 nanometers～960 nanometers.Described pumping system is the nd yag doubled-frequency laser crystal.Described frequency doubling system is a lithium triborate crystal.
Optionally, described beam-expanding collimation system comprises at least three combination of lensess.Described lens are planoconvex spotlight or biconvex lens, and diameter is 6mm～12mm.
Optionally, described projection chip area is 12mm * 9mm.
Optionally, described reflection and transmission system comprises: completely reflecting mirror, receive first light beam that first light source sends, and carry out total reflection; First half-reflecting half mirror, second light beam that the reception secondary light source sends also reflects, and first light beam that the reception completely reflecting mirror sends also carries out transmission, and first light beam and second light beam are merged into a branch of light; Second half-reflecting half mirror receives the 3rd light beam that the 3rd light source sends and carries out transmission, receives first light beam and the second light beam combined light beam of the first half-reflecting half mirror outgoing and reflects, and each light beam is merged into colourama.
Optionally, optical projection system also comprises: convergence yoke, and the colourama 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 colourama that convergence yoke is sent, and reflexes to display system; Receiving and displaying system is along the coloured image of receive direction outgoing again, and change is transmitted through projection element behind the polarization direction.
Optionally, described display system comprises: driving power, the output signal of telecommunication; The LCOS display panel receives the signal of telecommunication of driving power output and the colourama that filter system sends, through ovennodulation, and the output coloured image.
The invention provides a kind of projecting method, comprising: emission blue laser beam, emission red beam, transmitting green light beam; Export after blue laser beam, red beam and green beam be combined into colourama; Receive colourama and carry out beam-expanding collimation and output; Colourama behind the reception beam-expanding collimation is exported after regulating and forming uniform light spots; The colourama that reception is modulated into after the uniform light spots is modulated formation coloured image and output; The reception coloured image amplifies and is projected on the screen.
Optionally, the wavelength of described blue laser beam is 450 nanometers～480 nanometers.
Optionally, the step of formation blue laser beam comprises: launch monochromatic first laser beam; Receive first laser beam and assemble output; First laser beam after receive assembling carries out pumping, exports after forming second laser beam; Second laser beam after the reception pumping carries out frequency multiplication, exports behind the formation blue laser beam.
Optionally, the wavelength of described first laser beam is 808 nanometers.The wavelength of described second laser beam is 900 nanometers～960 nanometers.
Optionally, the described merging step that forms colourama comprises: receive first light beam that first light source sends and carry out exporting after the total reflection; Second light beam that the reception secondary light source sends also reflects output, and first light beam after the reception total reflection also carries out transmission output, and first light beam and second light beam of output are merged into a branch of light; Receive the 3rd light beam that the 3rd light source sends and carry out transmission output, receive first light beam and the second light beam combined light beam and reflect output, and each light beam is merged into colourama.
Optionally, projection step also comprises: receive the colourama be modulated into after the uniform light spots and assemble, export after forming the hot spot consistent with the projection die size; Receive the colourama that convergence yoke is sent, reflect to form coloured image, carry out transmission output behind the change polarization direction.
Optionally, the step of described formation coloured image also comprises: the driving power output signal of telecommunication; The LCOS display panel receives the signal of telecommunication of driving power output and the colourama that filter system sends, through ovennodulation, and the output coloured image.
Compared with prior art, the present invention has the following advantages: adopt the light source of LASER Light Source 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.
Description of drawings
Fig. 1 is the structural representation of existing optical projection system;
The embodiment flow chart of Fig. 2 for adopting optical projection system of the present invention to carry out projection;
Fig. 3 is the example structure schematic diagram of optical projection system of the present invention;
Fig. 4 a to Fig. 4 c is the structural representation of beam-expanding collimation system in the optical projection system of the present invention;
Fig. 5 is the structural representation of LASER Light Source 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, thermal radiation is strong and average life span 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 thermal 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.
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.
A kind of optical projection system comprises: blue laser light source, emission blue laser beam; Green light source, the transmitting green light beam; Red light source, the emission red beam; The reflection and transmission system is combined into colourama with blue laser beam, green beam and red beam; Beam-expanding collimation system, the colourama that the reflection and transmission system is sent carries out beam-expanding collimation; Even photosystem is regulated the colourama behind the beam-expanding collimation, forms uniform light spots; Display system, the colourama that the even photosystem of reception sends is modulated the formation coloured image; The coloured image that projection element, receiving and displaying system send amplifies and is projected on the screen, and wherein the projection chip in the projection element is identical with the uniform light spots shape of even photosystem outgoing.
The method of carrying out projection by above-mentioned optical projection system as shown in Figure 2, execution in step S101, emission blue laser beam, emission red beam, transmitting green light beam; Execution in step S102 exports after blue laser beam, red beam and green beam be combined into colourama; Execution in step S103 receives colourama and carries out beam-expanding collimation and output; Execution in step S104, the colourama behind the reception beam-expanding collimation is exported after regulating and forming uniform light spots; Execution in step S105, the colourama that reception is modulated into after the uniform light spots is modulated formation coloured image and output; Execution in step S106, the reception coloured image amplifies and is projected on the screen.
Fig. 3 is the example structure schematic diagram of optical projection system of the present invention.Optical projection system comprises: blue laser light source 200, emission blue laser beam; Green light source 201, the transmitting green light beam; Red light source 202, the emission red beam; Reflection and transmission system 203 is combined into colourama with blue laser beam, green beam and red beam; Beam-expanding collimation system 208, the colourama that reflection and transmission system 203 is sent carries out beam-expanding collimation; Even photosystem 210 is regulated the colourama behind the beam-expanding collimation, the identical shaped uniform light spots of projection chip in formation and the follow-up projection element 218; Display system 216, the colourama 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, described blue laser light source 200 is the solid state laser of diode-end-pumped, and its wavelength is 450 nanometers～480 nanometers, specifically can preferred 473 nanometers.Described red light source 202 and green light source 201 can be lasers, also can be LED.
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 colourama that receives reach even distribution in preset range self-energy, light intensity.
As shown in Figure 5, comprise as blue laser light source 200 with the solid state laser of diode-end-pumped: 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, second laser beam that pumping system 200c is sent carries out frequency multiplication, forms blue laser beam; Output system 200e receives the blue laser beam that frequency doubling system 200d exports, and focuses on.
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 planoconvex spotlights.
The wavelength of first laser beam that described lasing light emitter 200a sends is 808 nanometers.Described pumping system is neodymium-doped yttrium-aluminum garnet (Nd:YAG) laser crystal; The wavelength of second laser beam that forms after the pumping is 900 nanometers～960 nanometers, is specially 946 nanometers.Described frequency doubling system is three lithium borates (LBO) crystal.
As shown in Figure 3, described reflection and transmission system 203 comprises: completely reflecting mirror 206 receives the red beam that red 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 red beam that reception completely reflecting mirror 206 sends also carries out transmission, and the green beam and the red beam of output are merged into a branch of light; Second half-reflecting half mirror 204 receives the blue laser beam that blue laser light source 200 sends and also carries out transmission, receives the green and the red combined light beam of first half-reflecting half mirror, 205 outgoing and reflects, and each light beam is merged into colourama.
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 light source 200 can freely be arranged in pairs or groups.
Shown in Fig. 4 a, comprise at least three biconvex lens 208b combinations in the beam-expanding collimation system 208, wherein, diameter 6mm～12mm of biconvex lens 208b.
Shown in Fig. 4 b, comprise at least three planoconvex spotlight 208a combinations in the beam-expanding collimation system 208, wherein, diameter 6mm～12mm of planoconvex spotlight 208a.
Shown in Fig. 4 c, 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 planoconvex spotlight 208a, its arrangement can independent assortment; Can also be two biconvex lens 208b, all the other one be planoconvex spotlight 208a.Diameter 6mm～12mm of biconvex lens 208b and planoconvex spotlight 208a.
Can be coated with one deck anti-reflection film on the said lens, increase the transmitance of laser.
As shown in Figure 3, described display system 216 comprises: driving power 216b, the output signal of telecommunication; LCOS display panel 216a receives the signal of telecommunication of driving power 216b output and the colourama that even photosystem 210 sends, through ovennodulation, and the output coloured image.Wherein, driving power 216b also comprises: signal source 216b1, the output signal of telecommunication; Driver 216b2 receives one or more signals of telecommunication from signal source 216b1 input, and produces the signal of telecommunication that is used to control LCOS display panel 216a.
With reference to figure 3, blue laser light source 200 emission blue laser beams, green light source 201 transmitting green light beams, red light source 202 emission red beams; The red beam that completely reflecting mirror 206 reception red 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 red beam that completely reflecting mirror 206 sends simultaneously and carry out transmission, the green beam and the red beam of transmission of reflection are merged into a branch of light export; The blue laser beam that second half-reflecting half mirror, 204 reception blue laser light source 200 in the reflection and transmission system 203 are sent also carries out transmission, receive the green and the red combined light beam of first half-reflecting half mirror, 205 outgoing simultaneously and reflect, and each light beam is merged into colourama output; The colourama 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 colourama behind the beam-expanding collimation and regulates, and forms and the identical shaped uniform light spots of projection chip; The signal source 216b1 output signal of telecommunication in the display system 216; The signal of telecommunication that driver 216b2 received signal source 216b1 in the display system 216 sends and the signal of handling the LCOS display panel 216a that is formed for controlling in the display system 216; LCOS display panel 216a receives the signal of telecommunication of driver 216b2 and the colourama 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.
In the present embodiment, as shown in Figure 5, comprise with the solid state laser of diode-end-pumped operation principle: launch monochromatic first laser beam by lasing light emitter 200a as blue 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 carries out pumping, exports after forming second laser beam; Second laser beam that frequency doubling system 200d reception pumping system 200c sends carries out frequency multiplication, exports behind the formation blue laser beam; Output system 200e receives the blue laser beam of frequency doubling system 200d output, focuses on back output.
Continuation is with reference to figure 3, and the scheme of another embodiment is: be placed with convergence yoke 212 in above-mentioned optical projection system, the colourama 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 colourama that convergence yoke 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 yoke 212 comprises lens at least, and described lens can be biconvex lens, and diameter is 6mm～12mm.
Blue laser light source 200 emission blue laser beams, green light source 201 transmitting green light beams, red light source 202 emission red beams; The red beam that completely reflecting mirror 206 reception red 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 red beam that completely reflecting mirror 206 sends simultaneously and carry out transmission, the green beam and the red beam of transmission of reflection are merged into a branch of light export; The blue laser beam that second half-reflecting half mirror, 204 reception blue laser light source 200 in the reflection and transmission system 203 are sent also carries out transmission, receive the green and the red combined light beam of first half-reflecting half mirror, 205 outgoing simultaneously and reflect, and each light beam is merged into colourama output; The colourama 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 colourama behind the beam-expanding collimation and regulates, and forms and the identical shaped uniform light spots of projection chip; Convergence yoke 212 receives the colourama 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 colourama that convergence yoke 210 is sent, reflection output; The signal source 216b1 output signal of telecommunication in the display system 216; The signal of telecommunication that driver 216b2 received signal source 216b1 in the display system 216 sends and the signal of handling the LCOS display panel 216a that is formed for controlling in the display system 216; LCOS display panel 216a receives the signal of telecommunication of driver 216b2 and the colourama 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 (22)
1. an optical projection system is characterized in that, comprising:
Blue laser light source, the emission blue laser beam;
Green light source, the transmitting green light beam;
Red light source, the emission red beam;
The reflection and transmission system is combined into colourama with blue laser beam, green beam and red beam;
Beam-expanding collimation system, the colourama that the reflection and transmission system is sent carries out beam-expanding collimation;
Even photosystem is regulated the colourama behind the beam-expanding collimation, forms uniform light spots;
Display system, the colourama that the even photosystem of reception sends is modulated the formation coloured image;
The coloured image that projection element, receiving and displaying system send amplifies and is projected on the screen, and wherein the projection chip in the projection element is identical with the uniform light spots shape of even photosystem outgoing.
2. according to the described optical projection system of claim 1, it is characterized in that described blue laser light source is the solid state laser of diode-end-pumped.
3. according to the described optical projection system of claim 2, it is characterized in that the wavelength of described blue laser light source emission is 450 nanometers～480 nanometers.
4. according to each described optical projection system of claim 1 to 3, it is characterized in that blue laser light source 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, second laser beam that pumping system is sent carries out frequency multiplication, forms blue laser beam;
Output system receives the blue laser beam that frequency doubling system is exported, and focuses on.
5. according to the described optical projection system of claim 4, it is characterized in that the wavelength of described first laser beam is 808 nanometers.
6. according to the described optical projection system of claim 4, it is characterized in that the wavelength of described second laser beam is 900 nanometers～960 nanometers.
7. according to the described optical projection system of claim 4, it is characterized in that described pumping system is the nd yag doubled-frequency laser crystal.
8. according to the described optical projection system of claim 4, it is characterized in that described frequency doubling system is a lithium triborate crystal.
9. according to the described optical projection system of claim 1, it is characterized in that described beam-expanding collimation system comprises at least three combination of lensess.
10. according to the described optical projection system of claim 9, it is characterized in that described lens are planoconvex spotlight or biconvex lens, diameter is 6mm～12mm.
11., it is characterized in that described projection chip area is 12mm * 9mm according to the described optical projection system of claim 1.
12., it is characterized in that described reflection and transmission system comprises according to the described optical projection system of claim 1:
Completely reflecting mirror receives first light beam that first light source sends, and carries out total reflection;
First half-reflecting half mirror, second light beam that the reception secondary light source sends also reflects, and first light beam that the reception completely reflecting mirror sends also carries out transmission, and first light beam and second light beam are merged into a branch of light;
Second half-reflecting half mirror receives the 3rd light beam that the 3rd light source sends and carries out transmission, receives first light beam and the second light beam combined light beam of the first half-reflecting half mirror outgoing and reflects, and each light beam is merged into colourama.
13., it is characterized in that optical projection system also comprises according to the described optical projection system of claim 1:
Convergence yoke, the colourama 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 colourama that convergence yoke is sent, and reflexes to display system; Receiving and displaying system is along the coloured image of receive direction outgoing again, and change is transmitted through projection element behind the polarization direction.
14., it is characterized in that described display system comprises according to the described optical projection system of claim 1:
Driving power, the output signal of telecommunication;
The LCOS display panel receives the signal of telecommunication of driving power output and the colourama that filter system sends, through ovennodulation, and the output coloured image.
15. a projecting method is characterized in that, comprising:
The emission blue laser beam, emission red beam, transmitting green light beam;
Export after blue laser beam, red beam and green beam be combined into colourama;
Receive colourama and carry out beam-expanding collimation and output;
Colourama behind the reception beam-expanding collimation is exported after regulating and forming uniform light spots;
The colourama that reception is modulated into after the uniform light spots is modulated formation coloured image and output;
The reception coloured image amplifies and is projected on the screen.
16., it is characterized in that the wavelength of described blue laser beam is 450 nanometers～480 nanometers according to the described projecting method of claim 15.
17., it is characterized in that the step that forms blue laser beam comprises according to the described projecting method of claim 15:
Launch monochromatic first laser beam;
Receive first laser beam and assemble output;
First laser beam after receive assembling carries out pumping, exports after forming second laser beam;
Second laser beam after the reception pumping carries out frequency multiplication, exports behind the formation blue laser beam.
18., it is characterized in that the wavelength of described first laser beam is 808 nanometers according to the described projecting method of claim 17.
19., it is characterized in that the wavelength of described second laser beam is 900 nanometers～960 nanometers according to the described projecting method of claim 17.
20., it is characterized in that the step that described merging forms colourama comprises according to the described projecting method of claim 15:
Receiving first light beam that first light source sends carries out exporting after the total reflection;
Second light beam that the reception secondary light source sends also reflects output, and first light beam after the reception total reflection also carries out transmission output, and first light beam and second light beam of output are merged into a branch of light;
Receive the 3rd light beam that the 3rd light source sends and carry out transmission output, receive first light beam and the second light beam combined light beam and reflect output, and each light beam is merged into colourama.
21., it is characterized in that projection step also comprises according to the described projecting method of claim 15:
The colourama that reception is modulated into after the uniform light spots is assembled, and exports after forming the hot spot consistent with the projection die size;
Receive the colourama that convergence yoke is sent, reflect to form coloured image, carry out transmission output behind the change polarization direction.
22., it is characterized in that the step of described formation coloured image also comprises according to the described projecting method of claim 15:
The driving power output signal of telecommunication;
The LCOS display panel receives the signal of telecommunication of driving power output and the colourama that filter system sends, through ovennodulation, and the output coloured image.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810205374A CN101771884A (en) | 2008-12-31 | 2008-12-31 | Projection system and projection method |
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| CN200810205374A CN101771884A (en) | 2008-12-31 | 2008-12-31 | Projection system and projection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967873A (en) * | 2019-12-20 | 2020-04-07 | 深圳疆程技术有限公司 | Backlight illumination system, display and vehicle-mounted head-up display system |
| WO2020135305A1 (en) * | 2018-12-29 | 2020-07-02 | 深圳光峰科技股份有限公司 | Light source system, diaplay device and light source control method |
| CN113805419A (en) * | 2020-06-15 | 2021-12-17 | 中强光电股份有限公司 | Illumination system and projection device |
-
2008
- 2008-12-31 CN CN200810205374A patent/CN101771884A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020135305A1 (en) * | 2018-12-29 | 2020-07-02 | 深圳光峰科技股份有限公司 | Light source system, diaplay device and light source control method |
| CN110967873A (en) * | 2019-12-20 | 2020-04-07 | 深圳疆程技术有限公司 | Backlight illumination system, display and vehicle-mounted head-up display system |
| CN113805419A (en) * | 2020-06-15 | 2021-12-17 | 中强光电股份有限公司 | Illumination system and projection device |
| CN113805419B (en) * | 2020-06-15 | 2024-02-09 | 中强光电股份有限公司 | Illumination system and projection device |
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Application publication date: 20100707 |