CN105204278A - Light source system and projection device using light source system - Google Patents
Light source system and projection device using light source system Download PDFInfo
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- CN105204278A CN105204278A CN201410226010.7A CN201410226010A CN105204278A CN 105204278 A CN105204278 A CN 105204278A CN 201410226010 A CN201410226010 A CN 201410226010A CN 105204278 A CN105204278 A CN 105204278A
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Abstract
The invention provides a light source system and a projection device using the light source system. The light source system is suitable for the projection device which emits first wave band light along a first light path. The light source system comprises a wavelength conversion member, a time-sharing filtering device and a light guiding device. The wavelength conversion member is arranged on a second light path so as to converts the first wave band light into second wave band light and output the second wave band light. The time-sharing filtering device is arranged on a third light path for carrying out time-sharing filtering. The light guiding device is connected with the first light path, the second light path and the third light path and is used for guiding the first wave band light and the second wave band light to enter the third light path or guiding the first wave band light to the wavelength conversion member so as to enable the first wave band light and a first light beam and a second light beam of the second wave band light to be subjected to time-sharing filtering, and time-sharing projection is carried out by means of the first wave band light, the first light beam and the second light beam. In this way, the structure is simplified, and the colored light performance and the image quality are improved.
Description
Technical field
The present invention relates to a kind of light-source system, particularly relate to the combined type light-source system of a kind of timesharing colour developing and applicable projector equipment thereof.
Background technology
In recent years, along with the technology constantly progressive and improvement manufacturing and produce projector equipment, light and handy and the projector equipment of slimming has become the main product on market.Therefore, the exploitation of projector equipment is also moved towards based on the direction of lasting improvement design, develops the small and exquisite and projector equipment with high-effect and good image quality to meet the need of market, then becomes the major subjects of each manufacturer of industry.
In view of this, the industry projector equipment adopting collocation laser diode and fluorometer arrangement, to meet aforementioned need more.Refer to Figure 1A and Figure 1B, Figure 1A shows the conventional light source system construction drawing of Monolithic Digital light process projector equipment, and Figure 1B shows the schematic diagram of the timesharing filtering apparatus of the conventional light source system of Monolithic Digital light process projector equipment.As illustrated in figures ia and ib, conventional light source system 10 comprises laser diode 11, lens combination 12 and fluorometer arrangement 13, and wherein fluorometer arrangement 13 has multiple not homochromy fluorescer 131, coats on multiple section 132.The light penetration lens combination 12 that laser diode 11 sends and be incident to fluorometer arrangement 13, incident ray is converted to the light with longer wavelength by the fluorescer 131 of fluorometer arrangement 13, such as ruddiness, and when fluorometer arrangement 13 rotates, multiple sections 132 of fluorometer arrangement 13 and the fluorescer 131 coating multiple section 132 rotate with a sequential, and then assorted coloured light is developed the color respectively according to described sequential.
But this kind of conventional light source system not only cannot be used in reflective fluorometer arrangement, and if for using optical filter and fluorescer on single fluorometer arrangement simultaneously, can various problems be derived again.For example, changing rear emitted light due to fluorescer is isotropic scattered beam, but existing optical filter all requires that in specification the incident angle of light must be limited in certain angle, can reach good filter effect.It can thus be appreciated that conventional light source system not only has complex structure and cannot be applied to the problem of reflective fluorometer arrangement, more cannot reach good filter effect because using during optical filter simultaneously, and then make luminance conversion efficiency not good, relatedly affect image quality.
Therefore, be really necessary that development is a kind of and solved the light-source system of aforementioned prior art problem and applicable projector equipment thereof, and then promote the practicality in its industry.
Summary of the invention
Fundamental purpose of the present invention for providing a kind of light-source system and applicable projector equipment thereof, with the problem such as solve the not good and coloured light performance of the complex structure of conventional light source system and projector equipment, luminance conversion efficiency and image quality is not good.
Another object of the present invention is for providing a kind of light-source system and applicable projector equipment thereof, the second light path and the 3rd light path is arranged at respectively by Wavelength changing element and timesharing filtering apparatus, can structure be simplified and reduce small product size, and reach good filter effect, and then promote coloured light performance and image quality.
Another object of the present invention, for providing a kind of light-source system and applicable projector equipment thereof, by the special light path design of light-source system, in using general optical element when, can reach and effectively promote the effect such as luminance conversion efficiency and filter effect.
For achieving the above object, a better embodiment of the present invention is for providing a kind of light-source system, be applicable to the projector equipment at least sending a first band light along one first light path, comprise: a Wavelength changing element, be arranged at one second light path, in order to described first band light is converted to a second band light and exports described second light path to; One timesharing filtering apparatus, is arranged at one the 3rd light path, filters described first band light and described second band light in order to timesharing; And a light guide, arrange and be connected to described first light path, described second light path and described 3rd light path, in order to guide described first band light and described second band light enters described 3rd light path, or guide described first band light to described Wavelength changing element, to make one first light beam of described first band light and described second band light and one second light beam filter through described timesharing filtering apparatus timesharing, with described first band light, described first light beam and described second light beam timesharing projection.
For achieving the above object, another better embodiment of the present invention, for providing a kind of projector equipment, comprising: one first solid-state light emitting element, is arranged at one first light path, in order to send a first band light to described first light path; And a light-source system, comprising: a Wavelength changing element, be arranged at one second light path, in order to described first band light is converted to a second band light and exports described second light path to; One timesharing filtering apparatus, is arranged at one the 3rd light path, filters described first band light and described second band light in order to timesharing; And a light guide, arrange and be connected to described first light path, described second light path and described 3rd light path, in order to guide described first band light and described second band light enters described 3rd light path, or guide described first band light to described Wavelength changing element, to make one first light beam of described first band light and described second band light and one second light beam filter through described timesharing filtering apparatus timesharing, with described first band light, described first light beam and described second light beam timesharing projection.
The invention provides a kind of light-source system and applicable projector equipment thereof, the second light path and the 3rd light path is arranged at respectively by Wavelength changing element and timesharing filtering apparatus, can structure be simplified and reduce small product size, and reaching good filter effect, and then promoting coloured light performance and image quality.In addition, by the special light path design of light-source system, that is first light path be the optical path of solid-state light emitting element to light guide, second light path is the optical path of Wavelength changing element to light guide, and the 3rd light path is that light guide is to timesharing filtering apparatus, and the optical path of the output that filters through timesharing filtering apparatus, in using general optical element when, can reach and effectively promote the effect such as luminance conversion efficiency and filter effect.
Accompanying drawing explanation
Figure 1A shows the conventional light source system construction drawing of Monolithic Digital light process projector equipment.
Figure 1B shows the schematic diagram of the timesharing filtering apparatus of the conventional light source system of Monolithic Digital light process projector equipment.
Fig. 2 A shows the light-source system structural drawing of present pre-ferred embodiments.
Fig. 2 B shows the schematic diagram of the timesharing filtering apparatus of the light-source system of present pre-ferred embodiments.
Fig. 3 shows the schematic diagram of the first light beam through the timesharing filtering apparatus optical filtering projection shown in Fig. 2 B of second band light.
Fig. 4 shows the schematic diagram of the second light beam through the timesharing filtering apparatus optical filtering projection shown in Fig. 2 B of second band light.
Fig. 5 shows the Wavelength distribution figure of the first band light of one embodiment of the invention and the first light beam of second band light and the second light beam.
Fig. 6 A shows the light-source system structural drawing of another preferred embodiment of the present invention.
Fig. 6 B shows the schematic diagram of the timesharing filtering apparatus of the light-source system of another preferred embodiment of the present invention.
Fig. 7 shows the schematic diagram of the first light beam through the timesharing filtering apparatus optical filtering projection shown in Fig. 6 B of second band light.
Fig. 8 shows the schematic diagram of the second light beam through the timesharing filtering apparatus optical filtering projection shown in Fig. 6 B of second band light.
Fig. 9 shows the S polarisation of light beam square for first band light and the wavelength-reflectance curve figure of P polarisation of another embodiment of the present invention light guide.
Figure 10 A shows the light-source system structural drawing of the another preferred embodiment of the present invention.
Figure 10 B shows the schematic diagram of the timesharing filtering apparatus of the light-source system of the another preferred embodiment of the present invention.
Figure 11 shows the schematic diagram of the first light beam through the timesharing filtering apparatus optical filtering projection shown in Figure 10 B of second band light.
Figure 12 shows the schematic diagram of the second light beam through the timesharing filtering apparatus optical filtering projection shown in Figure 10 B of second band light.
Figure 13 shows the first spectroscope and the second spectroscopical wavelength-reflectance curve figure of further embodiment of this invention light guide.
Figure 14 A shows the light-source system structural drawing of the present invention's preferred embodiment again.
Figure 14 B shows the schematic diagram of the present invention's timesharing filtering apparatus of the light-source system of a preferred embodiment again.
Figure 15 shows the schematic diagram of the first light beam through the timesharing filtering apparatus optical filtering projection shown in Figure 14 B of second band light.
Figure 16 shows the schematic diagram of the second light beam through the timesharing filtering apparatus optical filtering projection shown in Figure 14 B of second band light.
Figure 17 shows the first spectroscope and the second spectroscopical wavelength-reflectance curve figure of yet another embodiment of the invention light guide.
Wherein, description of reference numerals is as follows:
10 conventional light source systems
11 laser diodes
12 lens combination
13 fluorometer arrangement
131 fluorescers
132 sections
2 light-source systems
21 Wavelength changing elements
22 timesharing filtering apparatus
221 first sections
222 second sections
223 the 3rd sections
23 light guide
231 light beam sheets
232 spectroscopes
233 quarter-wave plates
234 light beam squares
235 quarter-wave plates
236 first spectroscopes
237 second spectroscopes
238 total internal reflection prisms
239 the 3rd spectroscopes
31 first solid-state light emitting elements
41 first solid-state light emitting elements
42 second solid-state light emitting elements
43 the 3rd solid-state light emitting elements
D1 curve
D2 curve
P curve
S curve
L1 first band light
L1 ' class first band light
L2 second band light
L21 first light beam
L22 second light beam
L3 the 3rd band of light
P1 first light path
P2 second light path
P3 the 3rd light path
Embodiment
Some exemplary embodiments embodying feature & benefits of the present invention describe in detail in the explanation of back segment.Be understood that the present invention can have various changes on different embodiments, it neither departs from the scope of the present invention, and explanation wherein and accompanying drawing are in itself when the use explained, but not for limiting the present invention.
Refer to Fig. 2 A, Fig. 2 B, Fig. 3, Fig. 4 and Fig. 5, wherein Fig. 2 A shows the light-source system structural drawing of present pre-ferred embodiments, Fig. 2 B shows the schematic diagram of the timesharing filtering apparatus of the light-source system of present pre-ferred embodiments, Fig. 3 shows the schematic diagram of the first light beam through the timesharing filtering apparatus optical filtering projection shown in Fig. 2 B of second band light, Fig. 4 shows the schematic diagram of the second light beam through the timesharing filtering apparatus optical filtering projection shown in Fig. 2 B of second band light, Fig. 5 shows the Wavelength distribution figure of the first band light of one embodiment of the invention and the first light beam of second band light and the second light beam.As shown in Fig. 2 A, Fig. 2 B, Fig. 3, Fig. 4 and Fig. 5, light-source system 2 of the present invention is applicable to the projector equipment at least sending first band light L1 along the first light path P1, such as but not limited to the projector equipment sending first band light L1 with the first solid-state light emitting element 31, light-source system 2 comprises Wavelength changing element 21, timesharing filtering apparatus 22 and light guide 23.In some embodiments, Wavelength changing element 21 can be specific material for transformation of wave length, such as but not limited to fluorescer or fluorescent plate etc., it is arranged at the second light path P2, in order to first band light L1 is converted to second band light L2 and exports the second light path P2 to.Timesharing filtering apparatus 22 can be but is not limited to optical filtering colour wheel, is arranged at the 3rd light path P3, filters first band light L1 and second band light L2 in order to timesharing.As for light guide 23, it arranges and is connected to the first light path P1, the second light path P2 and the 3rd light path P3, in order to guide first band light L1 and second band light L2 enters the 3rd light path P3, or guiding first band light L1 is to Wavelength changing element 21, second band light L2 is converted in the mode such as excited, filter through timesharing filtering apparatus 22 timesharing with the first light beam L21 and the second light beam L22 that make first band light L1 and second band light L2, with first band light L1, the first light beam L21 and the second light beam L22 timesharing projection.
According to conception of the present invention, light guide 23 can comprise light beam sheet 231, spectroscope 232 and quarter-wave plate 233, wherein light beam sheet 231 can be wiregrating formula light beam sheet, and correspondingly with the first solid-state light emitting element 31 on the first light path P1 to arrange, pass through to make P polarisation and reflect S polarisation.Spectroscope 232 is adjacent to light beam sheet 231, and to be arranged in parallel as good with light beam sheet 231, but not as limit.Quarter-wave plate 233 opposite polarization light beam sheet 231 is arranged at the opposite side of spectroscope 232, and is arranged on the 3rd light path, is converted to S polarisation after penetrating twice to make the P polarisation of first band light L1.In this embodiment, first band light L1 is blue light, and second band light L2 is gold-tinted.First solid-state light emitting element 31 is blue light solid-state light emitting element, and is good with blue laser element, and Wavelength changing element 21 is yellow fluorescence oxidant layer.Because gold-tinted comprises the frequency spectrum of green glow and ruddiness, therefore be that the first light beam L21 of second band light L2 and the second light beam L22 is good with green glow and ruddiness respectively with primaries timesharing projection, but not as limit.In addition, spectroscope 232 reflect yellow also makes blue light penetrate, so also not as limit.
According to design of the present invention, first light path P1 is the optical path of the first solid-state light emitting element 31 to light beam sheet 231, second light path P2 is the optical path of Wavelength changing element 21 to spectroscope 232, and the 3rd light path P3 is spectroscope 232 to timesharing filtering apparatus 22, and the optical path of the output that filters through timesharing filtering apparatus 22.In addition, timesharing filtering apparatus 22 can have the first section 221, second section 222 and the 3rd section 223.Wherein, first section 221 is transparent section, second section 222 penetrates section for green glow, and the 3rd section 223 penetrates section for ruddiness, such as the first section 221 is transparent glass or other materials, the green glow optical filter that second section 222 is glass and is arranged on glass, and the ruddiness optical filter that the 3rd section 223 is glass and is arranged on glass, so neither as limit.
In brief, in the present embodiment, light-source system 2 of the present invention the projector equipment that is suitable for, first band light L1 is sent along the first light path P1 with the first solid-state light emitting element 31, i.e. blue light, and pass through the light beam sheet 231 of light guide 23, pass through to make the P polarisation of blue light, and export the 3rd light path P3 to, and through quarter-wave plate 233 directive timesharing filtering apparatus 22, when the first section 221 of timesharing filtering apparatus 22 rotates to described 3rd light path P3, first band light L1 directly penetrates described first section 221 and exports projection.
Otherwise, if the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223 rotate on the 3rd light path P3, then first band light L1 is reflected through quarter-wave plate 233 by the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223, P polarisation due to first band light L1 penetrates quarter-wave plate 233 twice, therefore be converted to S polarisation by quarter-wave plate 233, penetrate spectroscope 232 to light beam sheet 231 again, characteristic due to light beam sheet 231 makes so, and first band light L1 reflects and directive Wavelength changing element 21 by light beam sheet 231.Wavelength changing element 21 is main is good with reflective fluorescer element, in reception or after absorbing first band light L1, first band light L1 is converted to second band light L2, and exports the second light path P2 to.Then, second band light L2 guides by the reflection of spectroscope 232 and enters the 3rd light path P3, and then transfer to timesharing filtering apparatus 22, when the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223 rotate to described 3rd light path P3, the second light beam L22 that the first light beam L21 of second band light L2 penetrates described second section 222 (as shown in Figure 3) or second band light L2 penetrates described 3rd section 223 (as shown in Figure 4) and exports projection, timesharing so as to the first light beam L21 and the second light beam L22 that complete first band light L1 and second band light L2 projects.Wherein, the Wavelength distribution figure of the first light beam L21 of first band light L1 and second band light L2 and the second light beam L22 as shown in Figure 5.As can be seen here, the present invention is arranged at the second light path P2 and the 3rd light path P3 respectively by Wavelength changing element 21 and timesharing filtering apparatus 22, can structure be simplified and reduce small product size, and reaching good filter effect, and then promoting coloured light performance and image quality.
Refer to Fig. 6 A, Fig. 6 B, Fig. 7, Fig. 8 and Fig. 9, wherein Fig. 6 A shows the light-source system structural drawing of another preferred embodiment of the present invention, Fig. 6 B shows the schematic diagram of the timesharing filtering apparatus of the light-source system of another preferred embodiment of the present invention, Fig. 7 shows the schematic diagram of the first light beam through the timesharing filtering apparatus optical filtering projection shown in Fig. 6 B of second band light, Fig. 8 shows the schematic diagram of the second light beam through the timesharing filtering apparatus optical filtering projection shown in Fig. 6 B of second band light, and Fig. 9 shows the S polarisation of light beam square for first band light and the wavelength-reflectance curve figure of P polarisation of another embodiment of the present invention light guide.As shown in Fig. 6 A, Fig. 6 B, Fig. 7, Fig. 8 and Fig. 9, light-source system 2 of the present invention comprises Wavelength changing element 21, timesharing filtering apparatus 22 and light guide 23.Wherein, Wavelength changing element 21 and timesharing filtering apparatus 22 identical with previous embodiment, therefore to repeat no more in this.But in this embodiment, light guide 23 comprises light beam square 234 and quarter-wave plate 235, light beam square 234 arranges and is connected to the first light path P1, the second light path P2 and the 3rd light path P3, and the first solid-state light emitting element 31 and quarter-wave plate 235 is adjacent on the first light path P1, pass through to make P polarisation and reflect S polarisation.Relatively described first solid-state light emitting element 31 of quarter-wave plate 235 is arranged at the opposite side of light beam square 234, and be arranged on the 3rd light path, and to be arranged in parallel as good with the first solid-state light emitting element 31 and light beam square 234, after penetrating twice to make the P polarisation of particular light ray, be converted to S polarisation.In some embodiments, first band light L1 is blue light, and second band light L2 is gold-tinted.First solid-state light emitting element 31 is blue light solid-state light emitting element, and is good with blue laser element, and Wavelength changing element 21 is yellow fluorescence oxidant layer.Because gold-tinted comprises the frequency spectrum of green glow and ruddiness, therefore be that the first light beam L21 of second band light L2 and the second light beam L22 is good with green glow and ruddiness respectively with primaries timesharing projection, but not as limit.
In this embodiment, first light path P1 is the optical path of the first solid-state light emitting element 31 to light beam square 234, second light path P2 is the optical path of Wavelength changing element 2 to light beam square 234, and the 3rd light path P3 is light beam square 234 to timesharing filtering apparatus 22, and the optical path of the output that filters through timesharing filtering apparatus 22.In addition, timesharing filtering apparatus 22 can have the first section 221, second section 222 and the 3rd section 223, and its embodiment is set forth in previous embodiment, so repeat no more.
Therefore, the light-source system 2 that the present embodiment proposes the projector equipment that is suitable for, first band light L1 is sent along the first light path P1 with the first solid-state light emitting element 31, i.e. blue light, and pass through the light beam square 234 of light guide 23, pass through to make the P polarisation of blue light, and export the 3rd light path P3 to, and through quarter-wave plate 235 directive timesharing filtering apparatus 22, when the first section 221 of timesharing filtering apparatus 22 rotates to described 3rd light path P3, first band light L1 directly penetrates described first section 221 and exports projection; Otherwise, if the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223 rotate on the 3rd light path P3, then first band light L1 is reflected through quarter-wave plate 235 by the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223, and be converted to S polarisation by quarter-wave plate 235, then reflect by light beam square 234 and be directed to Wavelength changing element 21.First band light L1, in reception or after absorbing first band light L1, is converted to second band light L2, and exports the second light path P2 to by Wavelength changing element 21.Then, second band light L2 enters the 3rd light path P3 by the reflection guiding of light beam square 234, and then transfer to timesharing filtering apparatus 22, when the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223 rotate to described 3rd light path P3, the second light beam L22 that the first light beam L21 of second band light L2 penetrates described second section 222 (as shown in Figure 7) or second band light L2 penetrates described 3rd section 223 (as shown in Figure 8) and exports projection, timesharing so as to the first light beam L21 and the second light beam L22 that complete first band light L1 and second band light L2 projects.Wherein, the light beam square 234 of light guide 23 for the S polarisation of first band light L1 and the reflectance curve of P polarisation as shown in the curve S of Fig. 9 and curve P.Therefore, again verify the special light path design of the present invention by light-source system 2, in using common optical elements when, can reach and effectively promote the effect such as luminance conversion efficiency and filter effect.
Refer to Figure 10 A, Figure 10 B, Figure 11, Figure 12 and Figure 13, wherein Figure 10 A shows the light-source system structural drawing of the another preferred embodiment of the present invention, Figure 10 B shows the schematic diagram of the timesharing filtering apparatus of the light-source system of the another preferred embodiment of the present invention, Figure 11 shows the schematic diagram of the first light beam through the timesharing filtering apparatus optical filtering projection shown in Figure 10 B of second band light, Figure 12 shows the schematic diagram of the second light beam through the timesharing filtering apparatus optical filtering projection shown in Figure 10 B of second band light, and Figure 13 shows the first spectroscope and the second spectroscopical wavelength-reflectivity schematic diagram of further embodiment of this invention light guide.As shown in Figure 10 A, Figure 10 B, Figure 11, Figure 12 and Figure 13, light-source system 2 of the present invention comprises Wavelength changing element 21, timesharing filtering apparatus 22 and light guide 23.Wherein, Wavelength changing element 21 and timesharing filtering apparatus 22 identical with previous embodiment, therefore to repeat no more in this.But in this embodiment, light guide 23 comprises the first spectroscope 236, second spectroscope 237 and total internal reflection prism (TotalInternalReflectionPrism, TIRPrism) 238, wherein total internal reflection prism 238 arranges and is connected to the first light path P1, the second light path P2 and the 3rd light path P3.Simultaneously, the projector equipment that the light-source system of the present embodiment is suitable for sends outside first band light L1 to the first light path P1 divided by the first solid-state light emitting element 41, class first band light L1 ' is sent to the first light path P1 further with the second solid-state light emitting element 42, wherein the first solid-state light emitting element 41 is parallel with the second solid-state light emitting element 42 and be arranged side by side, first spectroscope 236 is arranged between the first solid-state light emitting element 41 and total internal reflection prism 238, and the second spectroscope 237 is arranged between the second solid-state light emitting element 42 and total internal reflection prism 238.
In some embodiments, first band light L1 is the blue light of wavelength about 460 nanometer, the blue light that class first band light L1 ' is wavelength about 445 nanometer, and second band light L2 is gold-tinted.First solid-state light emitting element 41 and the second solid-state light emitting element 42 are blue light solid-state light emitting element, and are good with blue laser element, and Wavelength changing element 21 is yellow fluorescence oxidant layer.Because gold-tinted comprises the frequency spectrum of green glow and ruddiness, therefore be that the first light beam L21 of second band light L2 and the second light beam L22 is good with green glow and ruddiness respectively with primaries timesharing projection, but not as limit.
According to the conception of the present embodiment, first light path P1 is the optical path of the first solid-state light emitting element 41 and the second solid-state light emitting element 42 to total internal reflection prism 238, second light path P2 is the optical path of Wavelength changing element 21 to total internal reflection prism 238, and the 3rd light path P3 is total internal reflection prism 238 to timesharing filtering apparatus 22, and the optical path of the output that filters through timesharing filtering apparatus 22.In addition, timesharing filtering apparatus 22 can have the first section 221, second section 222 and the 3rd section 223, and its embodiment is set forth in previous embodiment, so repeat no more.
Specifically, first solid-state light emitting element 41 and the second solid-state light emitting element 42 send first band light L1 and class first band light L1 ' along the first light path P1 simultaneously respectively, first band light L1 and class first band light L1 ' enters total internal reflection prism 238 after penetrating the first spectroscope 236 and the second spectroscope 237 respectively, and enter the 3rd light path P3 by total internal reflection prism 238 guiding, and then transfer to timesharing filtering apparatus 22.When the first section 221 of timesharing filtering apparatus 22 rotates to described 3rd light path P3, first band light L1 and class first band light L1 ' directly penetrates the first section 221 and exports projection; Otherwise, if the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223 rotate on the 3rd light path P3, then first band light L1 and class first band light L1 ' is reflexed to total internal reflection prism 238 by the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223, then reflexes to the second spectroscope 237 and the first spectroscope 236 respectively through total internal reflection prism 238.First band light L1 and class first band light L1 ' is reflected by the second spectroscope 237 and the first spectroscope 236 respectively and is directed to Wavelength changing element 21 by total internal reflection prism 238.First band light L1 and class first band light L1 ', in reception or after absorbing first band light L1 and class first band light L1 ', is converted to second band light, and exports the second light path P2 to by Wavelength changing element 21.Then, second band light L2 enters the 3rd light path P3 by the reflection guiding of total internal reflection prism 238, first spectroscope 236 and the second spectroscope 237, and then transfers to timesharing filtering apparatus 22.When the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223 rotate to described 3rd light path P3, the second light beam L22 that the first light beam L21 of second band light L2 penetrates described second section 222 (as shown in figure 11) or second band light L2 penetrates described 3rd section 223 (as shown in figure 12) and exports projection, so as to the timesharing projection of the first light beam L21 and the second light beam L22 that complete first band light L1 and second band light L2.Wherein, the first spectroscope 236 of light guide 23 and the wavelength-reflectance curve of the second spectroscope 237 are as shown in the curve D 1 of Figure 13 and curve D 2.
Refer to Figure 14 A, Figure 14 B, Figure 15, Figure 16 and Figure 17, wherein Figure 14 A shows the light-source system structural drawing of the present invention's preferred embodiment again, Figure 14 B shows the schematic diagram of the present invention's timesharing filtering apparatus of the light-source system of a preferred embodiment again, Figure 15 shows the schematic diagram of the first light beam through the timesharing filtering apparatus optical filtering projection shown in Figure 14 B of second band light, Figure 16 shows the schematic diagram of the second light beam through the timesharing filtering apparatus optical filtering projection shown in Figure 14 B of second band light, and Figure 17 shows the first spectroscope and the second spectroscopical wavelength-reflectance curve figure of yet another embodiment of the invention light guide.As shown in Figure 14 A, Figure 14 B, Figure 15, Figure 16 and Figure 17, light-source system 2 of the present invention comprises Wavelength changing element 21, timesharing filtering apparatus 22 and light guide 23.Wherein, Wavelength changing element 21 and timesharing filtering apparatus 22 identical with previous embodiment, therefore to repeat no more in this.In this embodiment, light guide 23, outside comprising the first spectroscope 236, second spectroscope 237 and total internal reflection prism (TotalInternalReflectionPrism, TIRPrism) 238, comprises the 3rd spectroscope 239 further.The projector equipment that the light-source system of the present embodiment is suitable for sends first band light L1 and class first band light L1 ' to outside the first light path P1 divided by the first solid-state light emitting element 41 and the second solid-state light emitting element 42, the 3rd band of light L3 to the first light path P1 is sent further with the 3rd solid-state light emitting element 43, wherein the first solid-state light emitting element 41 and the second solid-state light emitting element 42 are arranged at the side of the contiguous first light path P1 of the 3rd spectroscope 239, 3rd solid-state light emitting element 43 is relatively arranged on the opposite side of the 3rd spectroscope 239 away from the first light path P1, and the 3rd spectroscope 239 structure is in making the 3rd band of light L3 penetrate and reflecting first band light L1 and class first band light L1 '.
In some embodiments, first band light L1 is the blue light of wavelength about 460 nanometer, the blue light that class first band light L1 ' is wavelength about 445 nanometer, and second band light L2 is gold-tinted, and the 3rd band of light L3 is ruddiness.First solid-state light emitting element 41 and the second solid-state light emitting element 42 are blue light solid-state light emitting element, and be good with blue laser element, 3rd solid-state light emitting element 43 is ruddiness solid-state light emitting element, and is good with red laser element, and Wavelength changing element 21 is yellow fluorescence oxidant layer.Because gold-tinted comprises the frequency spectrum of green glow and ruddiness, therefore be project with primaries timesharing, the first light beam L21 of second band light L2 and the second light beam L22 is good with green glow and ruddiness respectively, and the 3rd band of light L3 that the 3rd solid-state light emitting element 43 sends is better for be integrated into better with the second light beam L22 of second band light L2, to form the better ruddiness of color quality.
According to the conception of the present embodiment, first light path P1 is the optical path of the first solid-state light emitting element 41, second solid-state light emitting element 42 and the 3rd solid-state light emitting element 43 to total internal reflection prism 238, second light path P2 is the optical path of Wavelength changing element 21 to total internal reflection prism 238, and the 3rd light path P3 is total internal reflection prism 238 to timesharing filtering apparatus 22, and the optical path of the output that filters through timesharing filtering apparatus 22.In addition, timesharing filtering apparatus 22 can have the first section 221, second section 222 and the 3rd section 223, and its embodiment is set forth in previous embodiment, so repeat no more.
Specifically, first solid-state light emitting element 41, second solid-state light emitting element 42 and the 3rd solid-state light emitting element 43 send first band light L1, class first band light L1 ' and the 3rd band of light L3 along the first light path P1 simultaneously respectively, first band light L1, class first band light L1 ' and the 3rd band of light L3 enter total internal reflection prism 238 by light guide 23 guiding, and enter the 3rd light path P3 by total internal reflection prism 238 guiding, and then transfer to timesharing filtering apparatus 22.When the first section 221 of timesharing filtering apparatus 22 rotates to described 3rd light path P3, first band light L1 and class first band light L1 ' directly penetrates the first section 221 and exports projection; Otherwise, if the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223 rotate on the 3rd light path P3, then first band light L1, class first band light L1 ' are reflexed to total internal reflection prism 238 by the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223, then reflex to the second spectroscope 237 and the first spectroscope 236 respectively through total internal reflection prism 238.First band light L1 and class first band light L1 ' is reflected by the second spectroscope 237 and the first spectroscope 236 respectively and is directed to Wavelength changing element 21 by total internal reflection prism 238.First band light L1 and class first band light L1 ', in reception or after absorbing first band light L1 and class first band light L1 ', is converted to second band light, and exports the second light path P2 to by Wavelength changing element 21.Then, second band light L2 enters the 3rd light path P3 by the reflection guiding of total internal reflection prism 238, first spectroscope 236 and the second spectroscope 237, and then transfers to timesharing filtering apparatus 22.When the second section 222 of timesharing filtering apparatus 22 or the 3rd section 223 rotate to described 3rd light path P3, the first light beam L21 of second band light L2 penetrates the second light beam L22 of described second section 222 (as shown in figure 15) or second band light L2 and the 3rd band of light L3 simultaneously or integrate and penetrate described 3rd section 223 (as shown in figure 16) and export projection, timesharing so as to the first light beam L21 and the second light beam L22 that complete first band light L1 and second band light L2 projects, and because of the introducing of the 3rd band of light L3, the second light beam L22 and the 3rd band of light L3 can be made to integrate or mutual light filling, to make overall ruddiness color quality-improving.Wherein, the first spectroscope 236 of light guide 23 and the wavelength-reflectance curve of the second spectroscope 237 are as shown in the curve D 1 of Figure 17 and curve D 2.
In sum, the invention provides a kind of light-source system and applicable projector equipment thereof, the second light path and the 3rd light path is arranged at respectively by Wavelength changing element and timesharing filtering apparatus, can structure be simplified and reduce small product size, and reach good filter effect, and then promote coloured light performance and image quality.In addition, by the special light path design of light-source system, that is first light path be the optical path of solid-state light emitting element to light guide, second light path is the optical path of Wavelength changing element to light guide, and the 3rd light path is that light guide is to timesharing filtering apparatus, and the optical path of the output that filters through timesharing filtering apparatus, in using general optical element when, can reach and effectively promote the effect such as luminance conversion efficiency and filter effect.
Even if the present invention is described in detail by the above embodiments and can be changed arbitrarily by those skilled in the art and modify, but neither depart from the scope of claims of the present invention.
Claims (20)
1. a light-source system, be applicable to the projector equipment at least sending a first band light along one first light path, described light-source system comprises:
One Wavelength changing element, is arranged at one second light path, in order to described first band light is converted to a second band light and exports described second light path to;
One timesharing filtering apparatus, is arranged at one the 3rd light path, filters described first band light and described second band light in order to timesharing; And
One light guide, arrange and be connected to described first light path, described second light path and described 3rd light path, in order to guide described first band light and described second band light enters described 3rd light path, or guide described first band light to described Wavelength changing element, to make one first light beam of described first band light and described second band light and one second light beam filter through described timesharing filtering apparatus timesharing, with described first band light, described first light beam and described second light beam timesharing projection.
2. light-source system as claimed in claim 1, wherein said first band light is blue light, and described Wavelength changing element is yellow fluorescence oxidant layer, and described second band light is gold-tinted.
3. light-source system as claimed in claim 2, described first light beam of wherein said second band light is green glow, and described second light beam of described second band light is ruddiness.
4. light-source system as claimed in claim 1, wherein said first light path is the optical path from least one solid-state light emitting element to described light guide, described second light path is the optical path from described Wavelength changing element to described light guide, and described 3rd light path is from light guide to described timesharing filtering apparatus, and the optical path of the output that filters through described timesharing filtering apparatus.
5. light-source system as claimed in claim 1, wherein said timesharing filtering apparatus has one first section, one second section and one the 3rd section, wherein said first section is transparent section, and described second section is that green glow penetrates section, and described 3rd section is that ruddiness penetrates section.
6. light-source system as claimed in claim 5, wherein said first band light is sent by one first solid-state light emitting element, and described light guide comprises:
One light beam sheet, correspondingly with described first solid-state light emitting element on described first light path is arranged, and passes through and reflect S polarisation to make P polarisation;
One spectroscope, is adjacent to described light beam sheet, and be arranged in parallel with described light beam sheet; And
One quarter-wave plate, relatively described light beam sheet is arranged at described spectroscopical opposite side, and is arranged at described 3rd light path, is converted to S polarisation after penetrating twice to make the P polarisation of described first band light.
7. light-source system as claimed in claim 6, wherein said first band light is by the described light beam sheet of described light guide and export described 3rd light path to, and through timesharing filtering apparatus described in described quarter-wave plate directive, when described first section of described timesharing filtering apparatus rotates to described 3rd light path, described first band light directly penetrates described first section and exports projection; When described second section of described timesharing filtering apparatus or described 3rd section rotate on described 3rd light path time, described first band light reflects through described quarter-wave plate by described second section or described 3rd section, and reflexes to described Wavelength changing element by described spectroscope by described light beam sheet.
8. light-source system as claimed in claim 7, described first band light is converted to described second band light and exports described second light path to by wherein said Wavelength changing element, described second band light enters described 3rd light path by the described dichroic mirror guiding of described light guide, to transfer to described timesharing filtering apparatus, when described timesharing filtering apparatus described second section or described 3rd section rotate to described 3rd light path time, described second light beam that described first light beam of second band light penetrates described second section or described second band light penetrates described 3rd section and exports projection.
9. light-source system as claimed in claim 5, wherein said first band light is sent by one first solid-state light emitting element, and described light guide comprises:
One light beam square, arranges and is connected to described first light path, described second light path and described 3rd light path, and be adjacent to described first solid-state light emitting element on described first light path, pass through and reflect S polarisation to make P polarisation; And
One quarter-wave plate, relatively described first solid-state light emitting element is arranged at the opposite side of described light beam square, and is arranged on described 3rd light path.
10. light-source system as claimed in claim 9, wherein said first band light is by the described light beam square of described light guide and export described 3rd light path to, and through timesharing filtering apparatus described in described quarter-wave plate directive, when described first section of described timesharing filtering apparatus rotates to described 3rd light path, described first band light directly penetrates described first section and exports projection; When described second section of described timesharing filtering apparatus or described 3rd section rotate on described 3rd light path time, described first band light reflects through described quarter-wave plate by described second section or described 3rd section, and reflexes to described Wavelength changing element by described spectroscope by described light beam square.
11. light-source systems as claimed in claim 10, described first band light is converted to described second band light and exports described second light path to by wherein said Wavelength changing element, described second band light enters described 3rd light path by the described light beam square reflection guiding of described light guide, to transfer to described timesharing filtering apparatus, when described timesharing filtering apparatus described second section or described 3rd section rotate to described 3rd light path time, described second light beam that described first light beam of second band light penetrates described second section or described second band light penetrates described 3rd section and exports projection.
12. 1 kinds of projector equipments, comprising:
One first solid-state light emitting element, is arranged at one first light path, in order to send a first band light to described first light path; And
One light-source system, comprising:
One Wavelength changing element, is arranged at one second light path, in order to described first band light is converted to a second band light and exports described second light path to;
One timesharing filtering apparatus, is arranged at one the 3rd light path, filters described first band light and described second band light in order to timesharing; And
One light guide, arrange and be connected to described first light path, described second light path and described 3rd light path, in order to guide described first band light and described second band light enters described 3rd light path, or guide described first band light to described Wavelength changing element, to make one first light beam of described first band light and described second band light and one second light beam filter through described timesharing filtering apparatus timesharing, with described first band light, described first light beam and described second light beam timesharing projection.
13. projector equipments as claimed in claim 12, wherein said first band light is blue light, described Wavelength changing element is yellow fluorescence oxidant layer, and described second band light is gold-tinted, described first light beam of wherein said second band light is green glow, and described second light beam of described second band light is ruddiness.
14. projector equipments as claimed in claim 12, wherein said first light path is the optical path from least described first solid-state light emitting element to described light guide, described second light path is the optical path from described Wavelength changing element to described light guide, and described 3rd light path is from light guide to described timesharing filtering apparatus, and the optical path of the output that filters through described timesharing filtering apparatus.
15. projector equipments as claimed in claim 12, wherein said timesharing filtering apparatus has one first section, one second section and one the 3rd section, wherein said first section is transparent section, and described second section is that green glow penetrates section, and described 3rd section is that ruddiness penetrates section.
16. projector equipments as claimed in claim 15, also comprise one second solid-state light emitting element, be arranged at described first light path, in order to send a class first band light to described first light path, and described light guide comprises one first spectroscope, one second spectroscope and a total internal reflection prism, wherein said total internal reflection prism arranges and is connected to described first light path, described second light path and described 3rd light path, described first spectroscope is arranged between described first solid-state light emitting element and described total internal reflection prism, and described second spectroscope is arranged between described second solid-state light emitting element and described total internal reflection prism.
17. projector equipments as claimed in claim 16, the blue light of wherein said first band light to be wavelength peak be 460 nanometers, and described class first band light is wavelength peak is the blue light of 445 nanometers.
18. projector equipments as claimed in claim 17, after wherein said first band light and described class first band light penetrate described first spectroscope and described second spectroscope respectively, described 3rd light path is entered by described total internal reflection prism guiding, and then transfer to described timesharing filtering apparatus, and directly penetrate described first section output projection, or reflect by described second section and described 3rd section, then be directed to described Wavelength changing element by described total internal reflection prism.
19. projector equipments as claimed in claim 18, described first band light and described class first band light are converted to described second band light by wherein said Wavelength changing element, and through described total internal reflection prism, described first spectroscope and described second spectroscopical guiding by described second band optical transport extremely described timesharing filtering apparatus, described first light beam of described second band light and described second light beam sequentially penetrate described second section and the 3rd section output projection of described timesharing filtering apparatus again.
20. projector equipments as claimed in claim 16, also comprise one the 3rd solid-state light emitting element, with structure in sending one the 3rd band of light to described first light path, the described light guide of described light-source system also comprises one the 3rd spectroscope, wherein said first solid-state light emitting element and described second solid-state light emitting element are arranged at the side of contiguous described first light path of described 3rd spectroscope, described 3rd solid-state light emitting element is relatively arranged on the opposite side of described 3rd spectroscope away from described first light path, and described 3rd spectroscopic structure is in making described 3rd band of light penetrate and reflecting described first band light and described class first band light.
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