CN101430494A - Light source apparatus for projection display and projection display apparatus - Google Patents
Light source apparatus for projection display and projection display apparatus Download PDFInfo
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- CN101430494A CN101430494A CNA2007101937810A CN200710193781A CN101430494A CN 101430494 A CN101430494 A CN 101430494A CN A2007101937810 A CNA2007101937810 A CN A2007101937810A CN 200710193781 A CN200710193781 A CN 200710193781A CN 101430494 A CN101430494 A CN 101430494A
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Abstract
本发明提供了一种具有高亮度、高对比度与高色饱和度的用于投影系统的光源装置和投影显示装置；光源装置包括LED光源和激光光源，所述激光光源发出的激光与所述LED光源发出的光以同一方向直接混合输出；本发明将激光器的激光巧妙地引入投影系统的灯泡和LED发光光源，可以成功地调整了红绿蓝三基色的强度分布，提高了色饱和度与对比度等性能，在投影显示领域具有很高的实用价值。
The invention provides a light source device and a projection display device for a projection system with high brightness, high contrast and high color saturation; the light source device includes an LED light source and a laser light source, and the laser light emitted by the laser light source and the The light emitted by the light source is directly mixed and output in the same direction; the invention cleverly introduces the laser light of the laser into the bulb and LED light source of the projection system, which can successfully adjust the intensity distribution of the three primary colors of red, green and blue, and improve the color saturation and contrast And other performances, it has high practical value in the field of projection display.
Description
Technical field
The present invention relates to a kind of light supply apparatus and a kind of projection display equipment, particularly a kind of light supply apparatus that is used for Projection Display and projection display equipment with high-contrast and color saturation.
Background technology
In recent years, maturation along with led technology, also the someone attempts with light emitting diode as the optical projection system light source, the light emitting diode Projection Display is compared with traditional display technique, has bigger gamut range, and the light emitting diode live width is narrower, has high color saturation, can show that nature is true, gay colours.Lifetime of LED is long simultaneously, is a kind of environmental protection light source that does not have mercury.The light emitting diode Projection Display has become the significant development direction in demonstration field.
But, exist the total optical power deficiency on the low side that the effective luminous energy that utilizes of the system that can be projected is less, export because the optical extend of light emitting diode, has the led lighting technology now than big and the lower characteristic of brightness.
Although the luminous flux of light emitting diode and brightness are greatly improved, also do not reach the requirement of projector applications, the occasion that more particularly needs highlight illumination to use.In order to reach the requirement of projector applications, improve brightness of illumination, prior art is to lean on the permutation and combination of light emitting diode to improve luminous flux and brightness, but because light emitting diode is lambert's body illuminating source, if the optical extend of the LED source after the combination has exceeded the optical extend of optical projection system, this part light that exceeds then can not effectively be coupled into optical projection system.
The optical extend of light emitting diode is
E
Led＝n
2·π·sin
2(α)·S
Wherein n is the refractive index of luminescence medium; α is the emission half-angle of light source; S is the light-emitting area of light source.The emission half-angle of light emitting diode is 90 degree, and getting luminescence medium is air, and is 1 to do approximate treatment, 1mm with air refraction
2The light emitting diode (LED) light propagation is about 3.14mm
2Sr.
Be the optical projection system of 2.4 projection lens for the imager chip, the F number that use 0.79 inch, the optical extend of optical projection system is about E
Projector=22mm
2Sr has only general 7mm
2The light of diode combinations array output can be coupled into optical projection system, the luminous flux sum that can make full use of only is a hundreds of lumen, greater than 7mm
2The light that sends of area can't be coupled into optical projection system at all, the way that improves luminous flux by the area that increases light emitting diode is impracticable.
In addition, traditional ultrahigh pressure mercury lamp can be at 6mm on the present market
2The luminous flux of the thousands of lumens of last generation, brightness is also high more than ten times than light emitting diode.Ultrahigh pressure mercury lamp is not a kind of light source of environmental protection owing to the use to heavy metal Hg.
In the LED source in the market, be the optical projection system of 2.4 projection lens for the imager chip, the F number that use 0.79 inch, light-emitting area is 7mm
2Certain light emitting diode, be subjected to the restriction of optical projection system optical extend, the maximum luminous power that can be coupled into the ruddiness of optical projection system is about 1.6W, the maximum luminous power of green glow is about 0.7W, the maximum luminous power of blue light is about 1.8W, and the ratio that ruddiness, green glow, blue light can be coupled into the maximum luminous power of optical projection system is 1:0.44:1.13.And colour temperature to be 6500K white require the luminous power ratio of ruddiness, green glow and the blue light of light emitting diode is 1:0.87:1.73.This shows that when light emitting diode ruddiness or blue light satisfied maximum luminous power, the luminous power of green glow all was not enough, green glow is the most not enough.Because the deficiency of green glow luminous power causes total optical power to be subjected to its restriction and on the low side, this is one of them not enough major reason of light emitting diode Projection Display brightness.Existing solution is to improve the duty ratio of time of green glow in whole white light to improve brightness, and this method does not make full use of the luminous power of ruddiness and blue light; Or adopting the luminous power that reduces ruddiness and blue light to obtain white balance, this method is again because the restriction of green glow luminous power has caused the luminous power of synthesize white light on the low side.
In a word, all there is difference on RGB luminous power ratio and white the demand in various Projection Display of the prior art with light source, thereby make color saturation, brightness and contrast that deficiency all be arranged, can't reach the resultant effect that improves color saturation, improves brightness, improves contrast and control cost simultaneously.
Summary of the invention
Therefore, task of the present invention provide a kind of use LASER Light Source as a supplement light source improve the light supply apparatus that is used for optical projection system of brightness, contrast and the color saturation of Projection Display image.
Another task of the present invention provides a kind of projector that can export high image quality.
On the one hand, the invention provides a kind of light supply apparatus, comprise led light source and LASER Light Source, the laser that described LASER Light Source is sent mixes the back and directly mixes output with same direction with the light that described led light source sends.
In the above-mentioned light supply apparatus, described led light source is made of a plurality of LED, and is provided with at least one laser hole between the LED, and described LASER Light Source is by described laser hole outgoing.
Further, described laser hole is symmetricly set on the described led light source.
In the above-mentioned light supply apparatus, described LASER Light Source is provided with beam alignment system.
Further, described beam alignment system can comprise optical fiber and the coupling mirror that is used for described laser coupled is advanced described optical fiber, can also comprise extender lens and condenser lens etc.
In the above-mentioned light supply apparatus, also comprise the light-beam forming unit that is used to compress angle, described LED output light hole footpath, described light-beam forming unit comprises wedge shape rectangular pyramid etc.
On the other hand, the present invention also provides a kind of projector, and described projector uses the light source of above-mentioned light supply apparatus as projector.
Take technique scheme, can also utilize high brightness, the less laser of optical extend to replenish low-light level, LED source that optical extend is bigger, not only improved the luminous power of light emitting diode, improve the effective rate of utilization of light-source brightness and luminous energy significantly, and successfully solved the not enough defective that is not fully utilized or wastes with the ruddiness blue light of light emitting diode illuminated with green.In addition, the present invention has the characteristics of wide colour gamut, long-life, no mercury environmental protection simultaneously, and has both relatively inexpensive advantage, has very high practical value in field of projection display.
Description of drawings
Below, describe embodiments of the invention in conjunction with the accompanying drawings in detail, wherein:
Fig. 1 is a kind of laser mixes output with LED a light supply apparatus synoptic diagram;
Fig. 2, Fig. 3, Fig. 4 light supply apparatus synoptic diagram that to be another kind of laser directly mix with LED;
Fig. 5 and Fig. 6 are the light supply apparatus synoptic diagram that two kinds of three-primary color LEDs mix with RGB laser;
Fig. 7 is to use apparatus of the present invention laser to replenish a kind of synoptic diagram of projector apparatus of the monolithic DLP of White LED;
Fig. 8 is to use apparatus of the present invention RGB laser to replenish a kind of synoptic diagram of projector apparatus of the monolithic DLP of three-primary color LED;
Fig. 9 is to use apparatus of the present invention one-wavelength laser to replenish a kind of synoptic diagram of projector apparatus of the monolithic DLP of three-primary color LED;
Figure 10 is to use apparatus of the present invention laser to replenish a kind of synoptic diagram of projector apparatus of three DLP of LED;
Figure 11 is to use the synoptic diagram of a kind of projector light path of the three-primary color LED lamp of apparatus of the present invention and three LCD that one-wavelength laser closes Shu Zuowei Projection Display light source;
Figure 12 is to use the three-primary color LED lamp of apparatus of the present invention and the sharp combiner synoptic diagram as a kind of projector light path of three LCOS of Projection Display light source.
Embodiment
Because the hot spot and the angle of divergence of laser are all very little, so the optical extend of laser is very little.Determine by following formula from the optical extend of the laser of optical fiber output:
E
laser＝π
2r
2sin
2θ
Wherein, r is the radius of fibre bundle, and sin θ is the numerical aperture of optical fiber.Fibre bundle closes Shu Ercheng by one or multifiber.
For example, be 0.35mm for the fibre bundle radius, numerical aperture is that the optical extend of 0.22 fibre bundle output laser only is 5.22 * 10
-2Mm
2Sr and light emitting diode are compared and are wanted little 2 more than the order of magnitude.Luminous flux under this optical extend can reach thousands of to lumens up to ten thousand.Therefore, for laser, very little optical extend just can obtain high luminous flux output.
In the hybrid light source of certain light emitting diode and laser, the optical extend of setting light emitting diode is E
Led, the optical extend of laser is E
Laser, total optical extend of hybrid light source is E
Total, total optical extend of hybrid light source is the summation of the optical extend and the laser optics propagation of light emitting diode, if E
Total=E
Led+ E
Laser≤ E
Projector, then the luminous power of this hybrid light source can all be coupled into optical projection system effectively at this moment.Because E
LaserAnd E
LedCompare much smaller, almost can ignore, therefore, can allow the overwhelming majority of optical extend of this hybrid light source distribute to light emitting diode, purpose is to utilize the luminous energy of the comparatively cheap light emitting diode of cost as much as possible, and few part of the optical extend of hybrid light source is distributed to laser, utilize laser under very little optical extend, just can obtain the characteristic of high brightness, thereby improved the total brightness of hybrid light source.
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 has provided a kind of laser mixes output with LED light supply apparatus, comprise a LASER Light Source 106 and two LED 104 and 114, all be respectively equipped with the light-beam forming unit of a wedge shape rectangular pyramid on the output light path of each LED as the compression LED output light angle of divergence, the laser of described LASER Light Source 106 outputs at first is coupled into optical fiber 108 through coupled lens group 107, by the laser of optical fiber 108 output through focus lens group 109 backs with on the same direction of LED light of wedge shape rectangular pyramid output, export, realized mixing of laser and LED light.Described laser instrument can use solid state laser, gas laser, fiber laser, semiconductor laser etc.
In general, the aperture angle of light supply apparatus output light preferably equals the aperture angle of optical projection system, if greater than, have the waste of luminous energy, if less than too much, then can not make full use of the size of aperture angle, therefore used light- beam forming unit 105 and 115 to compress the light angle of divergence of lambert's LED bodily form formula in the present embodiment, make the angle of divergence after the compression be less than or equal to the aperture angle of optical projection system, except the wedge shape rectangular pyramid, can also adopt other to have the optical device of compression angle of divergence function; Can include extender lens in the focus lens group, its effect is with laser beam expanding, makes it have better diversity, can obtain mixed effect preferably, certainly, increases or remove extender lens in the practical application as required; Are ordinary skill in the art with laser by coupled lens group 107 coupled into optical fibres 108, and same, those skilled in the art can select whether laser coupled is advanced optical fiber according to actual needs; Two LED as shown in Figure 1 also can think and are respectively led array, also can think the part of led array, and think that laser instrument 106 is one in the laser array, for laser mix with the light of led array better, between adjacent LED, be provided with laser hole 112, the laser of described laser instrument or laser array output mixes with described LED light by each corresponding laser hole respectively, because the light-emitting area of led array is subjected to the restriction of the optical extend of follow-up optical projection system, so in order to increase luminous flux, must increase the arranging density of LED in the led array, what therefore laser hole can not be done is very big, use focus lens group 109 to focus the laser beam to reenter behind the less spot diameter and penetrate laser hole, can improve the LED arranging density of led array, improve luminous flux.In structure as shown in Figure 1, owing to used the wedge shape rectangular pyramid as light-beam forming unit, its cross section is greater than LED, for laser outgoing smoothly, leave space 111 between the wedge shape rectangular pyramid, needs use focus lens group 109 focuses the laser beam to 111 places, space between two wedge shapes, the four prism output terminals, can make the arranging density of led array reach maximum like this.
Figure 2 shows that the light supply apparatus synoptic diagram that laser and LED directly mix.Comprise a LASER Light Source 206 and two LED204 and 214, all be respectively equipped with a wedge shape rectangular pyramid 205 and 215 light-beam forming units as the compression LED output light angle of divergence on the output light path of each LED, laser process focus lens group 209 backs of described LASER Light Source 206 outputs mix on same direction with the LED light through wedge shape rectangular pyramid 205 and 215 outputs and export.Fig. 2 does not re-use coupled lens group and the optical fiber among Fig. 1, can realize mixing the effect of output yet.Equally, also can include extender lens in the focus lens group.In addition, in actual applications, can select different beam alignment systems according to the difference of laser instrument and the different needs of light path.
Figure 3 shows that the light supply apparatus synoptic diagram that laser and LED light directly mix.Comprise two identical LASER Light Source and three LED, all be respectively equipped with the light-beam forming unit of a wedge shape rectangular pyramid on the output light path of each LED as the compression LED output light angle of divergence, the laser of described LASER Light Source 306 and 316 outputs are coupled into optical fiber 308 and 318 respectively through separately coupled lens group 307 and 317 at first respectively, focus on through focus lens group 309 and 319 again after laser hole 302 and 312 and by the laser of optical fiber 308 and 318 outputs through wedge shape rectangular pyramid 305,315, the LED304 of 325 outputs, 314,324 light is exported on same direction, realizes mixing.Laser hole 302 and 312 symmetrically arranged purposes are to make mixed smooth shimming better effects if.
Figure 4 shows that the another kind of light supply apparatus synoptic diagram that laser and LED light directly mix.Comprise the led array formed by four LED and by the laser array of 2 laser constitutions, laser is identical with hybrid mode and Fig. 1 of LED light.The laser of laser instrument 406 directly passes through from the laser hole 408 between a LED404 and the 2nd LED414, the laser of laser instrument 416 directly passes through from the laser hole 418 between the 3rd LED424 and the 4th LED434, and directly mix with the output light of led array, this laser can obtain uniform more mixed light in the mode that symmetric mode and led array output light mix.
In addition, also can adopt the scheme of between the 2nd LED414 and the 3rd LED424, only mending a laser instrument; Perhaps mend scheme into three laser instruments at the laser hole between a LED404 and the 2nd LED414, between the 2nd LED414 and the 3rd LED424, between the 3rd LED424 and the 4th LED434.Present embodiment has mainly used the symmetrically arranged scheme of laser hole, it will be understood by those skilled in the art that and also can laser hole be set asymmetric manner according to the concrete needs in the practical application, but no matter whether laser hole is symmetrical arranged, and all should belong within this patent scope.
From Fig. 5, only represent a led array with two LED, it will be appreciated by those skilled in the art that this just for the convenience on representing, is not the restriction to led array.
Figure 5 shows that the three-primary color LED array mixes the Projection Display light supply apparatus synoptic diagram of output with RGB laser.Described Projection Display light supply apparatus comprises red, green, blue led array 501,502,503, red, green, blue laser 507,508,509, two dichroic mirrors, wherein, the ruddiness that red LED array 501 sends mixes with the red laser of red laser 507 emissions, the green glow that green LED array 502 sends mixes with the green laser of green (light) laser 508 emissions, the blue light that blue LED arrays 503 is sent mixes with the blue laser of blue laser 509 emissions, the hybrid mode of above-mentioned homochromy led array output light and laser all adopts mode shown in Figure 1, laser hole is located at the central authorities of led array, simultaneously, after mixed ruddiness and mixed green glow close bundle by first dichroic mirror 511, red green mixed light by second dichroic mirror 512 and mixed blue combiner, obtains the required white light of Projection Display again.In addition, the position of red-light LED array and blue-ray LED array also can exchange each other, and correspondingly, red laser and blue laser are also wanted switch, also will change simultaneously the corresponding plated film of first dichroic mirror and second dichroic mirror, this is understandable to those skilled in the art.In addition, also a plurality of laser holes can be set on led array, laser instrument also can be replaced by laser array simultaneously, and can adopt Fig. 2, Fig. 3 or mode shown in Figure 4 to mix.
Projection Display among Fig. 6 uses color-combination prism (X-cube) 610 to come two dichroic mirrors in the alternate figures 5 to carry out the synthetic of three primary colours light with light source, and is identical with Fig. 2 with the light beam hybrid mode of color, can obtain the required white light of Projection Display equally.In addition, identical with Fig. 5, the light path of ruddiness and blue light can replace each other, but the position of green glow is necessary for the position of directly passing through without reflection from the centre position of X-cube color-combination prism 610, and this is those skilled in the art's a common practise.
Fig. 7-Figure 12 has provided the projector light line structure of several uses light supply apparatus of the present invention.
Fig. 7 is the embodiment that uses a kind of projector light path of light supply apparatus of the present invention in monolithic DLP ray machine.Comprise as the white light LED array 701, light-beam forming unit 703,704, LASER Light Source 708, coupled lens group 717, optical fiber 707, first focus lens group 718, optical wand 710, second focus lens group 711, colour wheel 712, relay lens group 713, Digital Micromirror Device (the DigitalMicro-mirror Device that are replenished light source, be called for short DMD) 714 and projection lens set 715 and screen 716, wherein, LASER Light Source 708 is the solid state laser of green laser, the output light of led array mixes as projection light source with laser, and hybrid mode is same as shown in Figure 1.Mixed light beam carries out shimming by optical wand 710 to it in light path handles, by described second focus lens group 711 it is assembled then, enter colour wheel 712 again, the light of green glow, blue light and three kinds of colors of ruddiness is exported in regular turn according to a definite sequence of colour wheel setting, then by shining on the Digital Micromirror Device 714 behind relay lens group 713 image rotations, handle light beam later through after the projection lens set 715 by DMD714, shine imaging on the screen 716 at last.LASER Light Source 708 transmitting green laser in the present embodiment are in order to improve the green glow brightness in the Projection Display, adjust the intensity distributions of red-green-blue, thereby have improved the color saturation and the contrast of image.Can comprise in first focus lens group 718 that extender lens increases the degree of divergence of laser after through condenser lens thereafter, thereby strengthen mixed effect.If but the hot spot of laser instrument itself just can satisfy the mixing requirement, then needn't add extender lens.
Fig. 8 is to use three-primary color LED lamp of apparatus of the present invention and RGB to swash the synoptic diagram of combiner as a kind of projector light path of the monolithic DLP of Projection Display light source.LED and laser to close light basic identical with light channel structure shown in Figure 6 as the part of projection light source, just laser instrument and the light emitting diode mode of mixing adopts method shown in Figure 1.The first line focus lens combination 823 of mixed light beam converges to carries out shimming in the optical wand 824, again via inciding in the TIR prism 827 behind relay lens group 825 image rotations, after handling on the DMD826, be reflected, shine projection lens group 828 from TIR prism 827 again, at last imaging on screen 829.Owing to adopt the method for automatically controlled sequential, removed the colour wheel in the conventional one-piece DLP light path in this light path, after the laser mix supplement, the brightness of the redgreenblue of optical projection system all was enhanced than before.In addition, according to the difference of white light luminous intensity distribution ratio, the RGB laser instrument can be selected the different laser instrument of power, especially at the situation of green glow deficiency, can select to replenish the bigger green (light) laser of power.
Fig. 9 is to use the three-primary color LED lamp of apparatus of the present invention to mix synoptic diagram as the another kind of projector light path of the monolithic DLP of Projection Display light source with one-wavelength laser.Green (light) laser and green LED array are still taked structure shown in Figure 1, and to red-light LED array 911 and blue-ray LED array 913, wherein, the shared light-beam forming unit 912 of a plurality of LED in the red-light LED, the shared light-beam forming unit 914 of a plurality of LED in the blue-ray LED.The mode that the three primary colours light beam closes bundle is identical with Fig. 5, just only adopts green (light) laser to replenish green LED lamp here, red blue two-way mend into.The light beam that the three primary colours light beam closes behind the bundle carries out shimming through focus lens group 923 post-concentrations earlier in optical wand 924, again via inciding in the TIR prism 927 behind relay lens group 925 image rotations, after handling on the DMD926, be reflected, shine projection lens group 928 from TIR prism 927 again, at last imaging on screen 929.In the above-mentioned Projection Display light source, imager chip, the F number that uses 0.79 inch under colour temperature 6500K is the optical projection system of 2.4 projection lens, and described LED lamp all adopts led array, and light-emitting area is 7mm
2, the luminous power of red, green and blue LED array is not about ruddiness 0.8W, green glow 0.7W, blue light 1.4W respectively before adding green (light) laser, because green glow has reached maximum luminous power, so limited the luminous power of ruddiness and blue light.Adopt above-mentioned Projection Display light source, add luminous power and be the laser of 532nm green (light) laser of 0.65W after, the luminous power of RGB is brought up to the about 1.2W of ruddiness, the about 1.1W of green glow, the about 1.8W of blue light respectively.The brightness ratio of the light supply apparatus output white light behind the adding green (light) laser had before improved about 50%.This method has improved the brightness of green glow greatly, and the color saturation of green glow, thereby has improved the overall brightness of white light.
Figure 10 is the embodiment that uses a kind of projector light path of light supply apparatus of the present invention in three DLP ray machines.Comprise as the led array 1001 that is replenished light source, light-beam forming unit 1003, LASER Light Source 1008, coupled lens group 1018, optical fiber 1019, first focus lens group 1011, optical wand 1010, second focus lens group 1012, plane mirror 1020, inner full-reflection prism (TotalInterface Reflection, be called for short the TIR prism) 1021, color separation is color-combination prism (colorsplitting/recombining prism) 1022 again, red, green, blue DMD1023,1024 and 1025, and projection lens set 1015, wherein, laser light source 1008 is the solid state laser of emission 532nm green glow.Laser is at first gone into optical fiber 1019 by coupled lens group 1018 is laggard, focuses on the back by first focus lens group 1011 again from optical fiber 1019 emitting laser bundles and mixes with the light of launching through the led array 1001 of light-beam forming unit 1003.After mixed light beam carries out shimming by optical wand 1010, assemble by second focus lens group 1012 again, then through plane mirror 1020 reflections, enter inner full-reflection TIR prism (Total Interface Reflection, be called for short the TIR prism) 1021, the effect of TIR prism 1021 is to realize that incident light separates with emergent light, does not disturb mutually, make the incident light total reflection, emergent light sees through.TIR prism 1021 enters color separation color-combination prism 1022 again with the reflection of incident mixed light, color separation color-combination prism 1022 again makes mixed light be divided into indigo plant, green, red trichromatism in proper order, and incide respectively on indigo plant, green, the red DMD1025,1024 and 1023, the first red green look that closes of three-beam afterwards, blue light closes look with red green mixed light again, after exporting by TIR prism 1021 as emergent light once more at last, incide projection lens set 1015 back imagings.Wherein, TIR prism 1021 and color separation color-combination prism 1022 more all are optical device well known to those skilled in the art, and its structure can referenced patent number be first page second section of the US Patent specification of US6863401B2.
Figure 11 is to use the synoptic diagram of a kind of projector light path of the three-primary color LED of apparatus of the present invention and three LCD that one-wavelength laser closes Shu Zuowei Projection Display light source.Green glow led array 1101 carries out light beam by mode shown in Figure 1 with green (light) laser 1104 and mixes among the figure, red-light LED array 1111 and blue-ray LED array 1121 then no longer replenish with laser, and red-light LED array 1111 and blue-ray LED array 1,121 two LED separately are the shared separately light-beam forming unit 1112 of parallel arranged and 1122.The mixed light of green glow enters color-combination prism 1138 after passing through collimation lens 1131, reflecting polarized wafer 1132,1/2nd wavelength plates 1130, condenser lens 1133, optical wand 1134 and relay lens group 1135 and green glow LCD liquid crystal light valve 1108 in proper order; And ruddiness and blue- ray LED array 1111 and 1121 through each self- corresponding collimation lens 1113 and 1123, reflecting polarized wafer 1114 and 1124,1/2nd wavelength plates 1110 and 1120, condenser lens 1115 and 1125, optical wand 1116 and 1126, relay lens group 1117 and 1127 and LCD liquid crystal light valve 1118 and 1128 after enter color-combination prism 1138, by color-combination prism 1138 RGB three primary colours light is closed light again, by projection lens set 1139 imaging on screen 1140.Wherein, in order to improve the utilization ratio of light beam, the light-beam forming unit that is used to compress the LED lamp output beam angle of divergence can use the wedge shape rectangular pyramid, like this, can also utilize reflective polarizer that P light is passed through, the P light that passes through is converted to S light through 1/2nd wavelength plates again; And the S light by reflective polarizer is not reflected back toward the wedge type rectangular pyramid, and depolarization is a natural light after wedge type rectangular pyramid and LED surface are repeatedly reflected, and realizes that the part of S light is utilized once more.
Figure 12 is to use the three-primary color LED lamp of apparatus of the present invention and the sharp combiner synoptic diagram as a kind of projector light path of three LCOS of Projection Display light source.Blue light led array 1201 and green light LED array 1202 carry out light beam with blue laser 1204 and green (light) laser 1205 respectively by mode shown in Figure 1 and mix among the figure, and red-light LED array 1203 then no longer replenishes with laser.The mixed light of blue light is in proper order through entering X-cube color-combination prism 1240 behind collimation lens 1211, reflecting polarized wafer 1212, condenser lens 1213, optical wand 1214, relay lens group 1215, PBS1242 and the blue light LCOS1241; The mixed light of green glow is in proper order through entering X-cube color-combination prism 1240 behind collimation lens 1221, reflecting polarized wafer 1222, condenser lens 1223, optical wand 1224, relay lens group 1225, plane mirror 1226, PBS1252 and the green glow LCOS1251; Ruddiness then replenishes directly without laser instrument and enters X-cube color-combination prism 1240 behind order process collimation lens 1231, reflecting polarized wafer 1232, condenser lens 1233, optical wand 1234, relay lens group 1235, PBS1262 and the ruddiness LCOS1261; By color-combination prism 1240 RGB three primary colours light is closed light again, project on the screen, realize the Projection Display of image by projection lens set 1250.Wherein, in order to improve the utilization ratio of light beam, the light-beam forming unit that is used to compress the LED lamp output beam angle of divergence can use the wedge shape rectangular pyramid, like this, can also utilize reflective polarizer that P light is passed through, the S light that does not pass through is reflected back toward the wedge type rectangular pyramid, and depolarization is a natural light after wedge type rectangular pyramid and LED surface are repeatedly reflected, and realizes that the part of S light is utilized once more.PBS act as after the reflection of the p polarized light of incident light, and incident light is the s polarization on the LCOS surface through modulation conversion, and s polarized light transmission again enters the X-cube color-combination prism after passing PBS.
It is emphasized that at last, among above-mentioned Fig. 5,6,8,9,10,11,12, show that it is identical also to require the light path of RGB three tunnel to satisfy light path in order to realize image, or making three tunnel light paths reach the identical effect of light path, this is known to those skilled in the art.And, Fig. 7 to the Lights section of Figure 12 according to circumstances can select Fig. 1-Fig. 4 multi-form be equal to alternative.
Certainly, according to the needs in the practical application, light supply apparatus of the present invention can also mix the laser of other wavelength and color with the light that LED or led array send mutually, and can directly replace the light source that has now in the various projection arrangements, need not projection optical system is changed, certainly, according to those skilled in the art's actual needs, also can carry out the various variations that adapt to the optical system of projector.It should be noted that embodiment structure and the technical scheme only in above each accompanying drawing at last in order to light supply apparatus of the present invention to be described, but unrestricted.Although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101937810A CN101430494A (en) | 2007-11-08 | 2007-11-27 | Light source apparatus for projection display and projection display apparatus |
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| CN200710177035 | 2007-11-08 | ||
| CN200710177035.2 | 2007-11-08 | ||
| CNA2007101937810A CN101430494A (en) | 2007-11-08 | 2007-11-27 | Light source apparatus for projection display and projection display apparatus |
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| CN101430494A true CN101430494A (en) | 2009-05-13 |
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| CN2007101878583A Expired - Fee Related CN101430492B (en) | 2007-11-08 | 2007-11-14 | Light source for projection system and projection display device |
| CNU2007201950365U2007201950365U Expired - Fee Related CN201097088Y (en) | 2007-11-08 | 2007-11-14 | A light source device for projection system and projection display device |
| CNU2007203057454U Expired - Fee Related CN201134006Y (en) | 2007-11-08 | 2007-11-16 | Light source device and projection display device for projection system |
| CNA2007101872483A Pending CN101430491A (en) | 2007-11-08 | 2007-11-16 | Light source for projection system and projection display device |
| CNU2007203052268U Expired - Fee Related CN201104278Y (en) | 2007-11-08 | 2007-11-23 | Light source for projection system and projection display device |
| CNA2007101937045A Pending CN101430493A (en) | 2007-11-08 | 2007-11-23 | Light source for projection system and projection display device |
| CNU2007203052978U Expired - Fee Related CN201138418Y (en) | 2007-11-08 | 2007-11-27 | A light source device for projection display and projection display device |
| CNA2007101937810A Pending CN101430494A (en) | 2007-11-08 | 2007-11-27 | Light source apparatus for projection display and projection display apparatus |
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| CN2007101878583A Expired - Fee Related CN101430492B (en) | 2007-11-08 | 2007-11-14 | Light source for projection system and projection display device |
| CNU2007201950365U2007201950365U Expired - Fee Related CN201097088Y (en) | 2007-11-08 | 2007-11-14 | A light source device for projection system and projection display device |
| CNU2007203057454U Expired - Fee Related CN201134006Y (en) | 2007-11-08 | 2007-11-16 | Light source device and projection display device for projection system |
| CNA2007101872483A Pending CN101430491A (en) | 2007-11-08 | 2007-11-16 | Light source for projection system and projection display device |
| CNU2007203052268U Expired - Fee Related CN201104278Y (en) | 2007-11-08 | 2007-11-23 | Light source for projection system and projection display device |
| CNA2007101937045A Pending CN101430493A (en) | 2007-11-08 | 2007-11-23 | Light source for projection system and projection display device |
| CNU2007203052978U Expired - Fee Related CN201138418Y (en) | 2007-11-08 | 2007-11-27 | A light source device for projection display and projection display device |
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2007
- 2007-11-14 CN CN2007101878583A patent/CN101430492B/en not_active Expired - Fee Related
- 2007-11-14 CN CNU2007201950365U2007201950365U patent/CN201097088Y/en not_active Expired - Fee Related
- 2007-11-16 CN CNU2007203057454U patent/CN201134006Y/en not_active Expired - Fee Related
- 2007-11-16 CN CNA2007101872483A patent/CN101430491A/en active Pending
- 2007-11-23 CN CNU2007203052268U patent/CN201104278Y/en not_active Expired - Fee Related
- 2007-11-23 CN CNA2007101937045A patent/CN101430493A/en active Pending
- 2007-11-27 CN CNU2007203052978U patent/CN201138418Y/en not_active Expired - Fee Related
- 2007-11-27 CN CNA2007101937810A patent/CN101430494A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101430492A (en) | 2009-05-13 |
| CN201104278Y (en) | 2008-08-20 |
| CN101430492B (en) | 2011-05-18 |
| CN201097088Y (en) | 2008-08-06 |
| CN101430491A (en) | 2009-05-13 |
| CN101430493A (en) | 2009-05-13 |
| CN201134006Y (en) | 2008-10-15 |
| CN201138418Y (en) | 2008-10-22 |
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