CN200969018Y - Reflected LCD panel projection optical-mechanical system - Google Patents
Reflected LCD panel projection optical-mechanical system Download PDFInfo
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- CN200969018Y CN200969018Y CN 200620045015 CN200620045015U CN200969018Y CN 200969018 Y CN200969018 Y CN 200969018Y CN 200620045015 CN200620045015 CN 200620045015 CN 200620045015 U CN200620045015 U CN 200620045015U CN 200969018 Y CN200969018 Y CN 200969018Y
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- reflection type
- crystal panel
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Abstract
The utility model relates to a reflecting LCD panel projector system, which comprises a UHP lamp, a fly eye lens, a polarization conversion system, a lens, a dichroic mirror, a polarization prism, a color combination prism, a reflecting LCD panel, and a projection objective. The utility model is easy to use for the light spot part of fly eye system of the reflecting LCD panel, and adopters the optics components as little as possible, so as to reach the light spot and the light splitting effects. The utilization rate of the light energy is improved, and the assembly technology is simple.
Description
Technical field
The utility model relates to reflection type liquid crystal panel projection optical-mechanical system, particularly a kind of reflection type liquid crystal panel projection optical-mechanical system that closes photosystem with light-combining prism optics core as polarization.
Background technology
Adopt reflection type liquid crystal panel large screen back projection shadow machine,, adopted by increasing production firm along with the maturation of reflection type liquid crystal panel manufacturing process.The integral light conduit form rear-projection optical-mechanical system (see figure 1) that wherein has Brillian and 3M company to cooperate has the compound eye form rear-projection optical-mechanical system (see figure 2) of IBM Corporation and the polarization conversion integral light conduit form rear-projection optical-mechanical system (see figure 3) of OCLI company.
Wherein the principle of work of the compound eye form rear-projection optical-mechanical system of IBM Corporation is as follows: the light that lamp sends is reflected into along optical axis by cold reflector 1 and cuts ultraviolet color filter/compound eye group 2, elimination ultraviolet Infrared, be focused into the small light spot group, by polarization conversion part 3 the p polarized light is become the s polarized light, injecting condenser 4 again assembles, enter two to colour filter/arrangement of mirrors 5, light is through colour filter, after the reflection, ruddiness is downwards by catoptron 6 reflections, condenser/color filter 7 colour filter again passes through polarization splitting prism 8 beam split, red s polarized light is assembled and is imaged in reflection type liquid crystal panel 9, reflection type liquid crystal panel 9 becomes the s polarized light into the reflection of p polarized light by polarization splitting prism 8, light is by color-combination prism 10, by projection objective 11 with the image imaging on the reflection type liquid crystal panel 9 of red light illumination in screen.Blue green light upwards is reflected into two to color filter 12 by catoptron 6.Identical with ruddiness, indigo plant, green image images in screen by projection objective 11.
The incident ray of the compound eye form rear-projection optical-mechanical system directional light of IBM Corporation makes polarization conversion complete, efficiency of light energy utilization height, but this system two to colour filter/reflective mirror 5 and ruddiness light path reflective mirror, blue green light light path reflective mirror 6 in same optical axis placed adjacent, be subjected to the distance of the blue reflection type liquid crystal panel of restriction of logical light area and red reflex formula liquid crystal panel 9 bigger, and two form structure more complicated, processing cost height to colour filter/reflective mirror 5 by several different color filters bondings.Brillian and the integral light conduit form rear-projection optical-mechanical system that 3M company cooperates do not have the polarization conversion function waste natural light 50%, the utilization factor of luminous energy is relatively poor.The polarization conversion integral light conduit form rear-projection optical-mechanical system of OCLI company has adopted the polarization conversion function but has made the light pipe lengthening owing to increased the clear aperture of integral light conduit, and the high angle scattered light polarization conversion of optical convergence point is incomplete, the total reflection of light on the integral light catheter wall limited by surface quality, and the utilization factor of luminous energy is affected.And optically focused part reflector spare is more.
Summary of the invention
The purpose of this utility model is that existing to be used for the rear-projection optical-mechanical system efficiency of light energy utilization low in order to overcome, the shortcoming that the complex structure processing cost is high, thereby provide a kind ofly be used for reflection type liquid crystal panel projection optical-mechanical system by what compound eye and spectroscope combined.
Reflection type liquid crystal panel projection optical-mechanical system of the present utility model comprises:
The first mixed light unit comprises first optical path of being made up of a light source, a compound eye lens group, a polarization conversion system and one first lens arranged in turn;
The first monochromatic light generation unit comprises one first color filter and one second lens that are arranged in turn on above-mentioned first optical path, and wherein said color filter becomes 45 degree to be provided with described first optical path;
The second mixed light unit, comprise in turn the second optics road formed by above-mentioned first color filter, one the 3rd lens and a reflective mirror through and the 3rd optics road warp formed by described reflective mirror, one the 4th lens, wherein said reflective mirror becomes the miter angle setting with the described second and the 3rd optics Lu Jingjun;
The second monochromatic light generation unit comprises that one is positioned at second color filter on above-mentioned the 3rd optical path, and wherein said color filter and the 3rd optics Lu Jingcheng miter angle are provided with;
The 3rd monochromatic light generation unit comprises the 4th optical path of being made up of above-mentioned second color filter, and wherein this second color filter becomes the miter angle setting with the 4th optical path;
Close color element, comprise several polarization splitting prisms, several reflection type liquid crystal panels and the color-combination prism that lay respectively on above-mentioned the first, the 3rd, the 4th optical path, wherein said reflection type liquid crystal panel is arranged at a side of described each polarization splitting prism respectively;
Projecting cell comprises a projection objective, and itself and described color-combination prism are positioned on the same axis.
Reflection type liquid crystal panel rear-projection optical-mechanical system of the present utility model has overcome that integration light pipe light-use of the prior art is low, and the condenser system reflective mirror is many, and the beam split color filter separation structure complexity of X type is difficult for shortcomings such as processing.
Description of drawings
Fig. 1 integral light conduit form rear-projection optical-mechanical system synoptic diagram that to be Brillian cooperate with 3M company, wherein 21 is lamp, and 22 is the integration light pipe, and 23 is polaroid, and 24 is reflection type liquid crystal panel, 25 is 3M polarization color-combination prism.
Fig. 2 is the compound eye form rear-projection optical-mechanical system synoptic diagram of IBM Corporation.
Fig. 3 is the polarization conversion integral light conduit form rear-projection optical-mechanical system synoptic diagram of OCLI company.
Fig. 4 is the lighting system structure synoptic diagram that is used for reflection type liquid crystal panel projector of the present utility model.
Fig. 5 is the illuminator synoptic diagram that is used for reflection type liquid crystal panel projector of the present utility model.
Fig. 6 is the illuminator light path synoptic diagram that is used for reflection type liquid crystal panel projector of the present utility model.
Embodiment
As shown in Figure 4, the illuminator that is used for reflection type liquid crystal panel projector of the present utility model comprises the first mixed light unit, the first monochromatic light generation unit, the second mixed light unit, the second monochromatic light generation unit, the 3rd monochromatic light generation unit, closes color element and projecting cell.
Particularly, in conjunction with Fig. 5, shown in Figure 6, the first mixed light unit comprises first optical path of being made up of light source 110, fly's-eye lens 120, polarization conversion system 130 and first lens 140 in turn; The first monochromatic light generation unit comprises first color filter 150 and second lens 160, and they all are positioned on first optical path 100.Wherein, 100 one-tenth miter angle settings of first color filter 150 and this first optical path, in the present embodiment, first color filter 150 is anti-bluish-green red color filter, described first monochromatic light is red light;
The second mixed light unit comprises in turn second optical path of being made up of above-mentioned anti-bluish-green red color filter 150, the 3rd lens 210, reflective mirror 220 200 and the 3rd optical path of being made up of described reflective mirror 220, the 4th lens 310; The second monochromatic light generation unit comprises second color filter 320 that is positioned on the 3rd optical path.Wherein, described reflective mirror 220 all becomes the miter angle setting with the described second and the 3rd optical path 200,300, described second color filter 320 on described the 3rd optical path 300 towards 310 one-tenth miter angle settings of the 4th lens, in the present embodiment, second color filter 320 is anti-green blue color filter, and described second monochromatic light is blue light;
The 3rd monochromatic light generation unit comprises the 4th optical path of being made up of above-mentioned second color filter 320 400, wherein 400 one-tenth miter angle settings of this second color filter 320 and the 4th optical path, and in the present embodiment, described the 3rd monochromatic light is green light;
Close color element and comprise several polarization splitting prisms 170,330,410 and a color-combination prism 500 that lays respectively on above-mentioned the first, the 3rd, the 4th optical path 100,300,400, wherein, several reflection type liquid crystal panels 180,340,420 and each polarization splitting prism are used;
Projecting cell comprises a projection objective 600.
Below in conjunction with accompanying drawing 4-6, describe principle of work of the present utility model in detail.
After the efficient Metal halogen lamp of light source (UHP lamp) 110 is opened, light forms and the as many hot spot of the little eyeglass quantity of fly's-eye lens by two fly's-eye lenses 120, these hot spots are focused in the polarization conversion system 130, wherein the p polarized light is by being converted into the s polarized light, the s polarized light is by polarization conversion system, and luminous energy makes full use of through being converted to.
Enter anti-bluish-green red color filter 150 through the light behind the polarization conversion system 130 through first lens 140, anti-bluish-green red color filter 150 filtering characteristics are the long-pass mistake, the shortwave reflection, so blue green light is reflection upwards, form second optical path 200, ruddiness is by anti-bluish-green red color filter, and continue to be received by second lens 160 along first optical path 100, second the lens 160 and then ruddiness of light source is sent to polarization splitting prism 170, polarization splitting prism 170 reflexes to reflection type liquid crystal panel 180 with the s polarized light, the uniform red s polarized light hot spot of the illumination that reflection type liquid crystal panel 180 obtains; The pixel that liquid crystal shutter is opened on the reflection type liquid crystal panel converts red s polarized light to the p polarized light and is reflected into polarization splitting prism 170, red p polarized light enters color-combination prism 500 through polarization splitting prism 170, color-combination prism 500 reflect red enter projection objective 600, and the pixel that projection objective 600 is opened liquid crystal shutter on the reflection type liquid crystal panel is imaged onto screen (figure does not show).
On the other hand, the blue green light of above-mentioned reflection is along 200 reflections of the second optics road, and by 210 receptions of the 3rd lens, the 3rd lens 210 are with indigo plant, green glow is sent to the 3rd optical path 300 through reflective mirror 220, and by 310 receptions of the 4th lens, the 4th lens 310 are with convergence of rays, the light of assembling is by anti-green blue color filter 320, anti-green blue color filter 320 filtering again, the short blue light of the long wave reflection of short-pass, its medium wavelength continues to advance along the 3rd optical path 300, and green light is reflected and enters the 4th optical path 400, particularly, the green light reflection enters the polarization splitting prism 410 of green glow light path, and the blue light transmission enters the polarization splitting prism 330 of blue light light path, and is identical with ruddiness light path imaging principle, blue, the image of green glow is synthetic by color-combination prism 500, and through projection objective 600 stacking images in screen.
In sum, because the compound eye system light collecting part of being used for of the present utility model divides simplyr, the efficiency of light energy utilization improves, and assembly technology is simple, has higher commercial value.
Claims (7)
1, a kind of reflection type liquid crystal panel projection optical-mechanical system is characterized in that this system comprises:
The first mixed light unit comprises first optical path of being made up of a light source, a compound eye lens group, a polarization conversion system and one first lens arranged in turn;
The first monochromatic light generation unit comprises one first color filter and one second lens that are arranged in turn on above-mentioned first optical path, and wherein said color filter becomes the miter angle setting with described first optical path;
The second mixed light unit, comprise in turn the second optics road formed by above-mentioned first color filter, one the 3rd lens and a reflective mirror through and the 3rd optics road warp formed by described reflective mirror, one the 4th lens, wherein said reflective mirror becomes the miter angle setting with the described second and the 3rd optics Lu Jingjun;
The second monochromatic light generation unit comprises that one is positioned at second color filter on above-mentioned the 3rd optical path, and wherein said color filter and the 3rd optics Lu Jingcheng miter angle are provided with;
The 3rd monochromatic light generation unit comprises the 4th optical path of being made up of above-mentioned second color filter, and wherein this second color filter becomes the miter angle setting with the 4th optical path;
Close color element, comprise several polarization splitting prisms, several reflection type liquid crystal panels and the color-combination prism that lay respectively on above-mentioned the first, the 3rd, the 4th optical path, wherein said reflection type liquid crystal panel is arranged at a side of described each polarization splitting prism respectively;
Projecting cell comprises a projection objective, and itself and described color-combination prism are positioned on the same axis.
2, reflection type liquid crystal panel projection optical-mechanical system as claimed in claim 1 is characterized in that, the described first monochromatic light generation unit is the red light generation unit.
3, reflection type liquid crystal panel projection optical-mechanical system as claimed in claim 1 is characterized in that, the described second monochromatic light generation unit is the blue light generation unit.
4, reflection type liquid crystal panel projection optical-mechanical system as claimed in claim 1 is characterized in that, described the 3rd monochromatic light generation unit is the green light generation unit.
5, reflection type liquid crystal panel projection optical-mechanical system as claimed in claim 1 is characterized in that, described first color filter is anti-bluish-green red color filter.
6, reflection type liquid crystal panel projection optical-mechanical system as claimed in claim 1 is characterized in that, described second color filter is anti-green blue color filter.
7, reflection type liquid crystal panel projection optical-mechanical system as claimed in claim 1 is characterized in that, described light source is efficient Metal halogen lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620045015 CN200969018Y (en) | 2006-08-22 | 2006-08-22 | Reflected LCD panel projection optical-mechanical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620045015 CN200969018Y (en) | 2006-08-22 | 2006-08-22 | Reflected LCD panel projection optical-mechanical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200969018Y true CN200969018Y (en) | 2007-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620045015 Expired - Fee Related CN200969018Y (en) | 2006-08-22 | 2006-08-22 | Reflected LCD panel projection optical-mechanical system |
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| Country | Link |
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| CN (1) | CN200969018Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749566A (en) * | 2008-12-12 | 2010-06-23 | 红蝶科技(深圳)有限公司 | Semiconductor lighting device and micro projection optical engine using same |
-
2006
- 2006-08-22 CN CN 200620045015 patent/CN200969018Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749566A (en) * | 2008-12-12 | 2010-06-23 | 红蝶科技(深圳)有限公司 | Semiconductor lighting device and micro projection optical engine using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071031 Termination date: 20120822 |