CN202018555U - Color modulation disk used for solid light source projector - Google Patents
Color modulation disk used for solid light source projector Download PDFInfo
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- CN202018555U CN202018555U CN2010206347751U CN201020634775U CN202018555U CN 202018555 U CN202018555 U CN 202018555U CN 2010206347751 U CN2010206347751 U CN 2010206347751U CN 201020634775 U CN201020634775 U CN 201020634775U CN 202018555 U CN202018555 U CN 202018555U
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Abstract
The present utility model discloses a color modulation disk used for a solid light source projector. A fixed hole is arranged on the center of the modulation disk, and the modulation disk is divided into a blue light zone, a green light zone and a red light zone along the circumferential direction. An optical filter of transmitting blue light and red light and reflecting green light, a green fluorescent powder layer, a substrate and an optical filter of transmitting green light and reflecting blue light and red light are arranged on the green light zone from the incidence plane to the exit plane successively, an optical filter of transmitting blue light and green light and reflecting red light, a red fluorescent powder layer, the substrate and an optical filter of transmitting red light and reflecting blue light and green light are arranged on the red light zone from the incidence plane to the exit plane successively, and the blue light zone is formed with the substrate. After the solid light source, the green fluorescent powder layer and the red fluorescent powder layer are determined, the chromatic values of three primary color lights of the color modulation disk are matched through adjusting circumferential angles of the blue light zone, the green light zone and the red light zone. The three primary color lights of blue light, green light and red light can be produced by the color modulation disk. When in use, the color modulation disk rotates at a certain speed, and color images without flickers and trailing of moving objects can be observed. Moreover, the color modulation disk has the advantages of high luminous efficiency, low power consumption, long service life, safety, lightness, etc.
Description
Technical field
The utility model relates to a kind of color modulation dish that is used for solid light source projector, to produce indigo plant (B), green (G), red (R) three primary colours light.
Background technology
Now adopt UHV (ultra-high voltage) (UHP) mercury lamp as light source with digital projector more, its power consumption is 100～300 watts, light efficiency is 60 lumens/watt, therefore the brightness that can produce is greater than 6000 lumens, but because the minimum arc length of bulb is 1～1.4mm, therefore the efficiency of light energy utilization only about 20%, about 3000 hours of the mean lifetime of bulb.Obviously, because the bulb power consumption is big, the life-span is short, therefore greatly having limited it enters the application of family.
Light emitting diode (LED) and laser diode (LD) are applied rapidly as the solid light source of energy-conserving and environment-protective of new generation, their advantage: the one, the light efficiency height, laboratory measurement result as the LED latest report is 208 lumens/watt, industry is used and has been reached about 160 lumens/watt, and good directionality; The 2nd, low in energy consumption, and use is fool proof less than the low-tension supply of 24V; The 3rd, the life-span is long, can reach serviceable life more than 100,000 hours; The 4th, the light source volume is little, is suitable in digital camera, mobile phone as built-in pocket projector or supporting as external portable projection machine with laptop computer, mobile phone etc.The main projector in whole world production commercial city replaces the solid light source digital projector that used UHP lamp, particularly Casio, NEC, Sony and Samsung have all been released projected image brightness 500～2000 lumens in exploitation with solid light source at present.Along with the further raising of solid light source brightness, it has been undisputable fact that LED and LD light source replace used UHP lamp gradually.On the other hand, LED and LD still develop the unique available light source of pocket projector and portable projection machine.
At LED and LD in the digital projector as light source, because single solid light source also exists the problem of luminance shortage, therefore blue, green, red three primary colours solid light source all must adopt a plurality of LED or LD to constitute three group pattern light sources could satisfy certain brightness requirement, so just bring a solid light source heat radiation difficulty and projector's volume to increase, the problem that cost improves, particularly heat dissipation problem is a key problem in technology that is difficult to more more that uses solid light source to run into so far, therefore reduce the quantity of using solid light source as far as possible, alleviate the difficulty of heat radiation, reduce the volume and the cost of projector, the selection of a kind of wisdom of can yet be regarded as.The blue light solid light source that the utility model proposes the emission wavelength that adopts present technology maturation and be 460～470nm utilizes a color modulation dish to produce blue light, green glow, ruddiness three primary colours light as the digital projector light source.When color modulation dish during, because the persistence of vision effect of human eye, just can observe the coloured image that a width of cloth flicker free, moving object do not have hangover with the rotation of certain speed.
The utility model content
The purpose of this utility model provides a kind of color modulation dish that is used for solid light source projector, and this color modulation dish can produce indigo plant (B), green (G), red (R) three primary colours light.
Design of the present utility model is: because solid light source LED and LD have energy-conserving and environment-protective with respect to used digital projector UHP light source, safety, advantages such as the life-span is long, but so far because single solid light source also exists the not high enough problem of brightness, therefore blue, green, red three groups of three primary colours solid light sources all must adopt a plurality of LED or LD forming array could satisfy certain brightness requirement, so just bring a solid light source heat radiation difficulty and projector's volume to increase, the problem that cost improves, for this reason, the utility model proposes and adopting the most ripe emission wavelength of present technology is the light source of the blue light solid light source array of 460～470nm as digital projector, utilizes a color modulation dish to produce blue light, green glow, ruddiness three primary colours light.The color modulation dish is divided into blue light region, green Region, red light district three parts.At blue light region, the blue light that solid light source sends obtains required blue light after directly passing the color modulation dish; In green Region, the blue-light excited green fluorescence bisque that is plated on the substrate that solid light source sends, the green glow that the green fluorescence bisque sends obtains required green glow after passing the color modulation dish; At red light district, the blue-light excited red phosphor powder layer that is plated on the substrate that solid light source sends, the ruddiness that red phosphor powder layer sends obtains required ruddiness after passing the color modulation dish.Blue (B), green (G), red (R) three primary colours light have so just been obtained.When the color modulation disc spins, just can observe the coloured image that a width of cloth flicker free, moving object do not have hangover.
For achieving the above object, the concrete technical scheme that the utility model is taked is: be provided with fixed orifice at this center that is used for the color modulation dish of solid light source projector, so that the color modulation dish is fixed in the rotating shaft of motor, and its circumferencial direction of this rim is divided into blue light region, green Region and red light district, described green Region is provided with the anti-green glow optical filter of blue ruddiness successively from the plane of incidence to exit facet, the green fluorescence bisque, the substrate and the anti-blue ruddiness optical filter of light that reveals the green, described red light district is provided with the anti-ruddiness optical filter of blue green light successively from the plane of incidence to exit facet, red phosphor powder layer, substrate and the saturating anti-blue green light optical filter of ruddiness, described blue light region is made of substrate.
Further, the composition of green fluorescence bisque described in the utility model is Sr
3SiO
5: 0.018Ce
3+, 0.018Li
+The composition of described red phosphor powder layer is 0.35Ba
2+Mix Sr altogether
3SiO
5: 0.018Ce
3+, 0.018Li
+
Compared with prior art, the beneficial effects of the utility model are:
(1) in the LED of prior art and the LD solid light source projector, because single solid light source also exists the problem of brightness wretched insufficiency, therefore blue, green, red three primary colours solid light source all must adopt a plurality of LED or LD to constitute three group pattern light sources could to satisfy certain brightness requirement, so just brings the problem of the difficult and volume increase of solid light source heat radiation, cost raising; It is that the blue light solid light source of 460～470nm is as the digital projector light source that the utility model only adopts the emission wavelength of present technology maturation, utilize a color modulation dish to produce blue light, green glow, ruddiness three primary colours light, solved the problem that heat radiation difficulty and volume increase, cost improve preferably.
(2) prior art adopts the UHP light source as the digital projector light source, and not only power consumption is big, the life-span short, and volume is big, poor stability; And the utility model is because the color modulation dish can produce blue light, green glow, ruddiness three primary colours light, therefore only need blue-ray LED or LD solid light source with energy-conserving and environment-protective, making it to replace the UHP light source that prior art uses becomes a reality, moreover, LED and LD still develop pocket projector and the unique available miniature light sources of portable projection machine.
(3) in the LD solid light source projector of prior art, because the laser coherence of blue, green, red three groups of LD is all fine, coloured image can produce dazzling speckle, need to take technology such as frosted glass runner to alleviate for this reason or eliminate, thereby a part of luminous energy is lost; The utility model is owing to green, the ruddiness of human eye sensitivity all produce with blue-ray LED or LD fluorescence excitation bisque, so do not observe speckle.
(4) in the LED of prior art and the LD solid light source projector, according to vision function, the brightness requirement of green glow solid light source is more than blue light, ruddiness height, but the brightness of green glow solid light source is lower at present; And the utility model obtains higher brightness by adopting the green light fluorescent powder layer, need not to use the green glow solid light source.
(5) the green fluorescence bisque that the utility model proposes (is Sr
3SiO
5: 0.018Ce
3+, 0.018Li
+) and red phosphor powder layer (0.35Ba
2+Mix Sr altogether
3SiO
5: 0.018Ce
3+, 0.018Li
+) have good green glow and ruddiness respectively and strengthen effect.
Description of drawings
Fig. 1 is the synoptic diagram that color modulation dish of the present utility model is used for solid light source projector;
Fig. 2 is the structural representation of color modulation dish of the present utility model;
Fig. 3 is the A-A cut-open view of Fig. 2;
Fig. 4 is the emission spectrum synoptic diagram of a kind of embodiment medium green phosphor powder layer of the present utility model and red phosphor powder layer.
Embodiment
As specific embodiment of the utility model, promptly the synoptic diagram of solid light source projector as shown in Figure 1.Among Fig. 1, solid light source 1 (LED or LD) is as the lighting source of projector, and its wavelength of transmitted light is the blue light of 460-470nm; Color modulation dish 2 of the present utility model is used for producing blue (B), green (G), red (R) three primary colours light, wherein the wavelength that directly sent by solid light source 1 of blue light is that the blue light of 460-470nm obtains, the wavelength that green glow is sent by solid light source 1 is that the blue-light excited green fluorescence bisque of 460-470nm obtains, and the wavelength that ruddiness is sent by solid light source 1 is that the blue-light excited red phosphor powder layer of 460-470nm obtains; When color modulation dish 2 rotated with the speed of per second 120 commentaries on classics, blue (B), green (G), red (R) three primary colours light were successively by optical system 3 collimated being incident on the Digital Micromirror Device 4 (Digital Micro-mirror Device (being called for short DMD)); Blue (B), green (G), red (R) three primary colours light produce blue (B), green (G), red (R) image information through Digital Micromirror Device 4 modulation backs, and by projecting projection objective 5 after Digital Micromirror Device 4 reflections; At last, projection objective 5 projects the coloured image amplification on the screen 6.
Fig. 2 is the structural representation of color modulation dish of the present utility model.Color modulation dish 2 comprises blue light region 21, green Region 22, red light district 23 and fixed orifice 24.Fixed orifice 24 is located at the center of color modulation dish 2, and blue light region 21, green Region 22, red light district 23 distribute along the circumferencial direction of color modulation dish 2.
Fig. 3 is the A-A cut-open view of Fig. 2.As shown in Figure 3, blue light region 21 is a single layer structure, is made of substrate 25; Green Region 22 and red light district 23 are sandwich construction, are coated with between each layer to form.Wherein, green Region 22 is provided with the anti-blue ruddiness optical filter 28 of the anti-green glow optical filter 27 of blue ruddiness, green fluorescence bisque 26, substrate 25 and the light that reveals the green successively from the plane of incidence to exit facet, red light district 23 is provided with the anti-ruddiness optical filter 27 ' of blue green light, red phosphor powder layer 26 ', substrate 25 and the saturating anti-blue green light optical filter 28 ' of ruddiness successively from the plane of incidence to exit facet, blue light region 21 is that the substrate 25 of color modulation dish 2 is own, and the material of substrate 25 can be selected glass or plastics for use usually.The wavelength that blue light region 21 direct transmit blue solid light sources 1 send is the blue light of 460～470nm.Green Region 22 is made up of the green fluorescence bisque 26 on the substrate 25, the anti-green glow optical filter 27 of saturating blue ruddiness and the anti-blue ruddiness optical filter 28 of the light that reveals the green; In green Region 22, the wavelength that solid light source 1 sends is to incide green fluorescence bisque 26 after the blue light of 460～470nm passes the anti-green glow optical filter 27 of blue ruddiness, and green fluorescence bisque 26 is produced based on green fluorescence by the blue-light excited back that solid light source 1 sends; Green fluorescence bisque 26 produce based in the green fluorescence, after wherein forward radiation fluorescence 29 directly passes substrate 25, incide the anti-blue ruddiness optical filter 28 of the light that reveals the green, this optical filter stops blue ruddiness by means of reflection, and required green glow sees through this optical filter, so obtain from a part of green glow in the green fluorescence bisque 26 forward radiation fluorescence 29; Then the blue ruddiness in radiofluorescence 30 sees through the anti-green glow optical filter 27 of saturating blue ruddiness, after the green glow that is reflected by this optical filter passes green fluorescence bisque 26, pass the substrate 25 and the anti-blue ruddiness optical filter 28 of light that reveals the green again, so obtain from another part green glow in the green fluorescence bisque 26 backward radiation fluorescence 30; From a part of green glow in the green fluorescence bisque 26 forward radiation fluorescence 29 with from the synthetic total green glow of another part green glow in the green fluorescence bisque 26 backward radiation fluorescence 30.Red light district 23 is made up of the red phosphor powder layer 26 ' on the substrate 25, the anti-ruddiness optical filter 27 ' of saturating blue green light and the saturating anti-blue green light optical filter 28 ' of ruddiness; In red light district 23, the wavelength that solid light source 1 sends is to incide red phosphor powder layer 26 ' after the blue light of 460～470nm passes the anti-ruddiness optical filter 27 ' of blue green light, and red phosphor powder layer 26 ' is produced based on red fluorescence by the blue-light excited back that solid light source 1 sends; Red phosphor powder layer 26 ' produce based in the red fluorescence, after wherein forward radiation fluorescence 29 ' directly passes substrate 25, incide the anti-blue green light optical filter 28 ' of ruddiness, this optical filter stops blue green light by means of reflection, and required ruddiness sees through this optical filter, so obtain from a part of ruddiness in red phosphor powder layer 26 ' the forward radiation fluorescence 29 '; Then the blue green light in radiofluorescence 30 ' sees through the anti-ruddiness optical filter 27 ' of saturating blue green light, after the ruddiness that is reflected by this optical filter passes red phosphor powder layer 26 ', pass substrate 25 and the saturating anti-blue green light optical filter 28 ' of ruddiness again, so obtain from another part ruddiness in red phosphor powder layer 26 ' the backward radiation fluorescence 30 '; From a part of ruddiness in red phosphor powder layer 26 ' the forward radiation fluorescence 29 ' with from the synthetic total ruddiness of another part ruddiness in red phosphor powder layer 26 ' the backward radiation fluorescence 30 '.So just obtained synthetic required indigo plant (B), green (G), red (R) three primary colours light of coloured image.The chromatic value of the three primary colours light of color modulation dish mates by the size of regulating blue light region 21, green Region 22, angle of circumference that red light district 23 is opened after solid light source 1 and green fluorescence bisque 26, red phosphor powder layer 26 ' are determined.For making color modulation dish 2 satisfy colored colourity requirement, make blue light region 21, green Region 22, red light district 23 synthesize white lights, in the ordinary course of things, the angle of circumference difference of blue light region 21, green Region 22, red light district 23, the angle of circumference maximum that common green Region 22 is opened, the angle of circumference minimum that blue light region 21 is opened.The angle of circumference of blue light region 21, green Region 22, red light district 23 is set and is depended on the brightness of solid light source 1 and the emissive porwer of green fluorescence bisque 26 and red phosphor powder layer 26 ', and those skilled in the art can in the light of actual conditions carry out corresponding configuration.When color modulation dish of the present utility model is fixed on the rotation axis (not shown) of motor by fixed orifice 24, can make color modulation dish 2 under the driving of motor during, just can observe the coloured image that a width of cloth flicker free, moving object do not have hangover with certain speed (be generally per second 120 change) rotation.
Fig. 4 is the emission spectrum synoptic diagram of a kind of preferred implementation medium green phosphor powder layer of the present utility model and red phosphor powder layer.Yttrium aluminum garnet Y
3Al
5O
12(being called for short YAG) is a kind of fluorescent powder commonly used at present, because of Y
3Al
5O
12(YAG) have garnet structure, so be referred to as yttrium aluminium garnet fluorescent powder, its emission spectrum peak wavelength is about 545nm, the about 110nm of half width, this fluorescent powder is because the emission yellow fluorescence, and required green glow and the ruddiness of Projection Display is very weak, shown in Fig. 4 spectral radiation curves 7.Color modulation dish of the present utility model proposes to adopt green fluorescence bisque (Sr first
3SiO
5: 0.018Ce
3+, 0.018Li
+With red phosphor powder layer (0.35Ba
2+Mix Sr altogether
3SiO
5: 0.018Ce
3+, 0.018Li
+), can be that blue light solid light source LED or the LD of 460～470nm is complementary with the highest wavelength of present brightness, launch stronger green glow and ruddiness, concrete effect as shown in Figure 4: at wavelength is that blue light solid light source LED or the LD of 460～470nm excites down green fluorescence powder Sr
3SiO
5: 0.018Ce
3+, 0.018Li
+The emission spectrum peak wavelength be about 530nm, the about 60nm of half width, this fluorescent powder moves to 530nm because the emission spectrum peak wavelength is short from about the 545nm of YAG, and half width is decreased to 60nm from 110nm, so its emitting fluorescence is based on green glow, shown in Fig. 4 spectral radiation curves 8.Red fluorescent powder 0.35Ba
2+Mix Sr altogether
3SiO
5: 0.018Ce
3+, 0.018Li
+The emission spectrum peak wavelength be about 590nm, the about 160nm of half width, this fluorescent powder is because emission spectrum peak wavelength long 590nm that moves to from about the 545nm of YAG, and half width increases to 160nm from 110nm, so its emitting fluorescence is based on ruddiness, shown in Fig. 4 spectral radiation curves 9.
Adopting color modulation dish of the present utility model to produce indigo plant (B), green (G), red (R) three primary colours light has the following advantages:
(1) LED compared to existing technology and LD solid light source projector, because single solid light source also exists the problem of brightness wretched insufficiency, therefore blue, green, red three primary colours solid light source all must adopt a plurality of LED or LD to constitute three group pattern light sources could satisfy certain brightness requirement, so just bring a solid light source heat radiation difficulty and volume to increase, the problem that cost improves, particularly the heat radiation of high-power solid light source also is not well solved so far, when heat radiation is bad, along with the solid light source temperature raises, the luminescent spectrum of solid light source can be with temperature drift, cause nature of colourity variation and colour developing, also can cause the solid light source luminosity to reduce simultaneously, shorten serviceable life; It is that the blue light solid light source of 460～470nm is as the digital projector light source that the utility model only adopts the emission wavelength of present technology maturation, utilize a color modulation dish to produce blue light, green glow, ruddiness three primary colours light, solved the problem that heat radiation difficulty and volume increase, cost improve preferably, and can not produce colourity when using and change, luminous stabilized intensity, the color nature.
(2) adopt the UHP light source as the digital projector light source compared to existing technology, not only power consumption is big, the life-span short, and volume is big, poor stability; And the utility model is because the color modulation dish can produce blue light, green glow, ruddiness three primary colours light, therefore only need blue-ray LED and LD solid light source with energy-conserving and environment-protective, avoided use UHP light source, thereby provide a kind of good selection for developing pocket projector and portable translucent machine.
(3) in the LD solid light source projector of prior art, because the laser coherence of blue, green, red three groups of LD is all fine, coloured image can produce dazzling speckle, need to take technology such as frosted glass runner to alleviate for this reason or eliminate, thereby a part of luminous energy is lost; The utility model is owing to green, ruddiness all produce with blue-ray LED or LD fluorescence excitation bisque, and blue light is little to the stimulation of human eye, green glow that human eye is the most responsive and ruddiness are produced by the very wide fluorescent powder of emission spectrum bandwidth, and the coherence of light is poor, so do not observe speckle.
(4) in the LED of prior art and the LD solid light source projector, according to vision function, the brightness requirement of green glow solid light source is more than blue light, ruddiness height, but actual conditions are just the opposite at present, and the brightness ratio of green glow solid light source is lower; It (is Sr that the utility model is selected the green fluorescence bisque for use
3SiO
5: 0.018Ce
3+, 0.018Li
+), directly avoid brightness problem on the low side when adopting the green glow solid light source, and had good green glow enhancing effect.
Claims (1)
1. color modulation dish that is used for solid light source projector, it is characterized in that: the heart is provided with fixed orifice (24) therein, and its circumferencial direction of this rim is divided into blue light region (21), green Region (22) and red light district (23), described green Region (22) is provided with the anti-green glow optical filter of blue ruddiness (27) successively from the plane of incidence to exit facet, green fluorescence bisque (26), the anti-blue ruddiness optical filter of the substrate (25) and the light that reveals the green (28), described red light district (23) is provided with the anti-ruddiness optical filter of blue green light (27 ') successively from the plane of incidence to exit facet, red phosphor powder layer (26 '), substrate (25) and the saturating anti-blue green light optical filter of ruddiness (28 '), described blue light region (21) is made of substrate (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206347751U CN202018555U (en) | 2010-11-26 | 2010-11-26 | Color modulation disk used for solid light source projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206347751U CN202018555U (en) | 2010-11-26 | 2010-11-26 | Color modulation disk used for solid light source projector |
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| Publication Number | Publication Date |
|---|---|
| CN202018555U true CN202018555U (en) | 2011-10-26 |
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ID=44812224
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206347751U Expired - Lifetime CN202018555U (en) | 2010-11-26 | 2010-11-26 | Color modulation disk used for solid light source projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202018555U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063002A (en) * | 2010-11-26 | 2011-05-18 | 杭州科汀光学技术有限公司 | Color regulating plate for solid light source projector |
| CN104865670A (en) * | 2011-11-12 | 2015-08-26 | 深圳市光峰光电技术有限公司 | Color wheel, assembly method therefor, and light source employing color wheel |
| CN111432200A (en) * | 2020-04-22 | 2020-07-17 | 联想(北京)有限公司 | Output control method and device and output equipment |
-
2010
- 2010-11-26 CN CN2010206347751U patent/CN202018555U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063002A (en) * | 2010-11-26 | 2011-05-18 | 杭州科汀光学技术有限公司 | Color regulating plate for solid light source projector |
| CN104865670A (en) * | 2011-11-12 | 2015-08-26 | 深圳市光峰光电技术有限公司 | Color wheel, assembly method therefor, and light source employing color wheel |
| CN104865670B (en) * | 2011-11-12 | 2018-03-06 | 深圳市光峰光电技术有限公司 | Colour wheel, its assemble method and the light source using the colour wheel |
| CN111432200A (en) * | 2020-04-22 | 2020-07-17 | 联想(北京)有限公司 | Output control method and device and output equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111026 Effective date of abandoning: 20120725 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20111026 Effective date of abandoning: 20120725 |