WO2012075947A1 - Projection system, light source system, and light source assembly - Google Patents

Projection system, light source system, and light source assembly Download PDF

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Publication number
WO2012075947A1
WO2012075947A1 PCT/CN2011/083651 CN2011083651W WO2012075947A1 WO 2012075947 A1 WO2012075947 A1 WO 2012075947A1 CN 2011083651 W CN2011083651 W CN 2011083651W WO 2012075947 A1 WO2012075947 A1 WO 2012075947A1
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WO
WIPO (PCT)
Prior art keywords
light
wavelength conversion
filter
region
light source
Prior art date
Application number
PCT/CN2011/083651
Other languages
French (fr)
Chinese (zh)
Inventor
胡飞
李屹
杨毅
Original Assignee
绎立锐光科技开发(深圳)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to CN201010579909 priority Critical
Priority to CN201010579909.9 priority
Priority to CN201010624857.2 priority
Priority to CN201010624857 priority
Priority to CN201110191454.8 priority
Priority to CN201110191454.8A priority patent/CN102566230B/en
Application filed by 绎立锐光科技开发(深圳)有限公司 filed Critical 绎立锐光科技开发(深圳)有限公司
Priority claimed from US13/992,243 external-priority patent/US9631792B2/en
Publication of WO2012075947A1 publication Critical patent/WO2012075947A1/en

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2033LED or laser light sources
    • G03B21/204LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence

Abstract

Provided is a projection system, a light source system, and a light source assembly. The light source system (100) comprises an excitation light source (101), a wavelength conversion device (106), an optical filtering device (107), a drive device (108), and a first optical assembly. The wavelength conversion device (106) comprises at least one wavelength conversion region. The optical filtering device (107) is fixed face-to-face with the wavelength conversion device (106), and comprises at least a first optical filtering region. The drive device (108) drives the wavelength conversion device (106) and the optical filtering device (107), allowing the wavelength conversion region and the first optical filtering region to act synchronously, and the wavelength conversion region is periodically set on the propagation path of the excitation light, thereby converting the excitation light wavelength into stimulated light. The first optical assembly allows the stimulated light to be incident on the first optical filtering region. The first optical filtering region filters the stimulated light, so as to enhance the color purity of the stimulated light. The light source system is simple in structure, easy to implement, and highly synchronous.

Description

 Projection system, light source system, and light source assembly

 The present invention relates to the field of light sources for illumination and display, and more particularly to a projection system, a light source system, and a light source assembly. Background technique

 Currently, projectors are widely used in a variety of applications such as movie playback, conferencing, and publicity. It is well known that in the light source of a projector, a fluorescent color wheel is often used to provide a sequence of colored light. Wherein, different color segments of the fluorescent color wheel are alternately and periodically disposed on the propagation path of the excitation light, and then the excitation light is used to excite the fluorescent material on different color segments of the fluorescent color wheel to generate fluorescence without color. However, due to the wide spectral range produced by the fluorescent material, the color purity of the partial fluorescence is insufficient, which in turn causes the color gamut of the light source to be insufficient. In this case, it is generally necessary to filter the fluorescence through a filter to increase the color purity of the fluorescence. However, since the spectral ranges of the fluorescent light of different colors partially overlap and cannot be filtered by the same filter, it is necessary to provide different filters for the fluorescence of different colors. In a prior art solution, a filter color wheel is provided at the entrance of the homogenizing rod, and the driving means for controlling the color filter of the color filter is synchronized with the driving means of the fluorescent color wheel. The above methods have the disadvantages of complicated structure, difficulty in implementation, and poor synchronization effect.

 With the increasingly fierce competition in the projector industry, manufacturers have increased the quality of projectors, thereby enhancing their competitiveness. The inventors have found in the long-term active pursuit of improving the quality of the projector that the synchronous architecture of the fluorescent color wheel and the color wheel of the projector light source in the prior art has technical problems such as complicated structure, difficulty in realization, and poor synchronization effect.

Therefore, it is desirable to provide a projection system, a light source system, and a light source assembly to solve the above-mentioned technical problems existing in the synchronous architecture of the fluorescent color wheel and the color filter color wheel of the projector light source in the prior art. Summary of the invention

 The technical problem to be solved by the present invention is to provide a projection system, a light source system, and a light source assembly to simplify the synchronization architecture of the wavelength conversion device and the filter device, and to improve the synchronization effect.

 In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a light source system including an excitation light source, a wavelength conversion device, a filter device, a driving device, and a first optical component. An excitation light source is used to generate an excitation light. The wavelength conversion device includes at least one wavelength conversion region. The filter device is relatively fixed to the wavelength conversion device and includes at least a first filter region. The driving device is configured to drive the wavelength conversion device and the filtering device to synchronously move the wavelength conversion region and the first filter region, and the wavelength conversion region is periodically disposed on the propagation path of the excitation light, thereby converting the wavelength of the excitation light into a receiving laser. The first optical component is configured to direct the laser light into the first filter zone, and the first filter zone filters the laser light to increase the color purity of the laser.

 Wherein, the wavelength conversion device and the filter device are two annular structures fixed coaxially.

 Wherein, the driving device is a rotating device having a rotating shaft, and the two annular structures are coaxially fixed on the rotating shaft.

 Wherein, the wavelength conversion region and the first filter region are disposed at 180 degrees with respect to the center of the two annular structures, and the first optical component is disposed such that the spot formed by the excitation light on the wavelength conversion device and the laser received on the filter device are formed. The spot is 180 degrees from the center of the two ring structures.

 Wherein, the wavelength conversion region and the first filter region are disposed at an angle of 0 degrees with respect to the center of the two annular structures, and the first optical component is disposed such that the spot formed by the excitation light on the wavelength conversion device and the received laser light are on the filter device The formed spot is set at 0 degrees with respect to the center of the two annular structures.

 Wherein the wavelength conversion device is axially spaced from the filter device, the first optical component includes at least one light collection device disposed between the wavelength conversion device and the filter device region, the light collection device collects the laser light and causes the laser to be received The energy incident on the filter device with an incident angle of 60 degrees or less accounts for more than 90% of the total energy.

 Wherein, the wavelength conversion region is arranged to reflect the laser light so that the direction of the laser light emitted from the wavelength conversion region is opposite to the incident direction of the excitation light with respect to the wavelength conversion region.

Wherein the wavelength conversion region is configured to transmit a laser to be subjected to laser light from the wavelength conversion region The exit direction is the same as the incident direction of the excitation light with respect to the wavelength conversion region.

 Wherein, the first optical component comprises at least one light collecting device, and the light collecting device collects the excited light such that the energy incident on the filter device by the incident angle of 60 degrees or less accounts for more than 90% of the total energy.

 Wherein, the first optical component comprises at least one reflecting device, the reflecting device reflects the laser light to change the direction of propagation of the laser light, the reflecting device is a planar reflecting device or is semi-ellipsoidal or hemispherical and the light reflecting surface faces inward Reflecting device.

 Wherein, the planar reflecting means comprises a dichroic mirror or a mirror.

 Wherein, the reflecting device having a semi-ellipsoidal shape or a hemispherical shape and having a light reflecting surface facing inward is provided with an optical entrance, and the excitation light is incident on the wavelength conversion device through the optical entrance.

 The wavelength conversion device includes a first light transmission region, and the first light transmission region is periodically disposed on the propagation path of the excitation light under the driving of the driving device, and the first light transmission region transmits the excitation light.

 Wherein, the light source system further includes a second optical component that combines the excitation light transmitted through the first light transmitting region with the laser light path filtered by the first filter region.

 Wherein, the filter device comprises a second light transmitting region or a second filter region, and the first optical component guides the excitation light transmitted through the first light transmitting region to the second light transmitting region or the first light path along the same optical path as the laser beam Two filter zones for transmission or filtration.

 The light source system further includes an illumination light source, and the illumination light source generates an illumination light. The wavelength conversion device further includes a first light transmission area, and the first light transmission area is periodically disposed on the propagation path of the illumination light driven by the driving device. The first light transmitting region transmits the illumination light, and the filter device further includes a second light transmitting region or a second filter region, and the first optical component transmits the light transmitted through the first light transmitting region along the same optical path as the laser beam. Light is directed to the second light transmissive zone or the second filter zone for transmission or filtration.

 Wherein, the light source system further comprises an illumination light source and a second optical component, the illumination light source generates an illumination light, and the second optical component combines the illumination light with the laser path filtered by the first filter region.

 Wherein, the wavelength conversion device is a cylindrical structure, and the filter device has an annular structure and is coaxially fixed with the cylindrical structure to be coaxially and synchronously rotated by the driving device.

Wherein, the wavelength conversion region is disposed on the outer sidewall of the cylindrical structure, and the reflection is received by the laser, first The filter region is disposed on the annular structure and located outside the cylindrical structure to receive the laser.

 Wherein, the wavelength conversion device and the filter device are two cylindrical structures that are coaxially fixed and nested with each other, and are coaxially and synchronously rotated under the driving of the driving device, and the wavelength conversion region and the first filter region are respectively disposed on the two The sidewalls of the cylindrical structures are transmitted by the laser light through the wavelength conversion region to the first filter region.

 Wherein, the wavelength conversion device and the filter device are two strip-shaped structures that are connected end to end, the wavelength conversion region and the first filter region are arranged side by side on two strip structures, and the driving device drives the two strip structures to reciprocate Linear translation.

 In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a light source assembly including a wavelength conversion device and a filter device. The wavelength conversion device includes at least one wavelength conversion region. The filter device is relatively fixed to the wavelength conversion device and includes at least one filter region to cause the wavelength conversion region and the filter region to move synchronously under the driving of the driving device.

 Wherein, the wavelength conversion device and the filter device are two annular structures fixed coaxially.

 Wherein, the wavelength conversion device has a cylindrical structure, and the filter device has an annular structure and is coaxially fixed with the cylindrical structure.

 Wherein, the wavelength conversion region is disposed on the outer side wall of the cylindrical structure, and the filter region is disposed on the annular structure and located outside the cylindrical structure.

 Wherein, the wavelength conversion device and the filter device are two cylindrical structures that are coaxially fixed and nested with each other, and the wavelength conversion region and the filter region are respectively disposed on the sidewalls of the two cylindrical structures.

 Wherein, the wavelength conversion device and the filter device are two strip structures which are connected end to end, and the wavelength conversion region and the filter region are arranged side by side on the two strip structures.

 In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a projection system using the above-described light source system.

 The beneficial effects of the present invention are: different from the prior art, the filter device in the projection system, the light source system and the light source assembly of the present invention is relatively fixed to the wavelength conversion device, and is driven by the same driving device, and has a simple structure. Easy to implement and high synchronization. DRAWINGS

1 is a schematic structural view of a first embodiment of a light source system of the present invention; 2 is a front view of a wavelength conversion device and a filter device in the light source system shown in FIG. 1; FIG. 3 is a schematic structural view of a second embodiment of the light source system of the present invention;

 4 is a front view of a wavelength conversion device and a filter device in the light source system shown in FIG. 3; FIG. 5 is a schematic structural view of a third embodiment of the light source system of the present invention;

 6 is a front view of a wavelength conversion device and a filter device in the light source system shown in FIG. 5. FIG. 7 is a schematic structural view of a fourth embodiment of the light source system of the present invention.

 Figure 8 is a schematic structural view of a fifth embodiment of the light source system of the present invention

 9 is a schematic structural view of a sixth embodiment of a light source system of the present invention

 Figure 10 is a schematic view showing the structure of a seventh embodiment of the light source system of the present invention

 Figure 11 is a schematic view showing the structure of an eighth embodiment of the light source system of the present invention

 Figure 12 is a schematic view showing the structure of a ninth embodiment of the light source system of the present invention.

 Figure 13 is a schematic view showing the structure of a tenth embodiment of the light source system of the present invention.

 Figure 14 is a schematic structural view of an eleventh embodiment of the light source system of the present invention;

 Figure 15 is a schematic view showing the structure of a twelfth embodiment of the light source system of the present invention;

 Fig. 16 is a front elevational view showing the wavelength conversion device and the filter device in the light source system shown in Fig. 15.

detailed description

 1 and 2, FIG. 1 is a schematic view showing the configuration of a first embodiment of a light source system of the present invention, and FIG. 2 is a front view showing a wavelength conversion device and a filter device in the light source system shown in FIG. 1. As shown in FIG. 1, the light source system 100 of the present embodiment mainly includes an excitation light source 101, a dichroic mirror 102 and a mirror 104, lenses 103 and 105, a wavelength conversion device 106, a filter device 107, and a driving device. Device 108 and light hooking device 109.

 The excitation light source 101 is used to generate an excitation light. In the present embodiment, the excitation light source 101 is an ultraviolet or near ultraviolet laser or an ultraviolet or near ultraviolet light emitting diode to generate ultraviolet or near ultraviolet excitation light.

As shown in FIG. 2, the wavelength conversion device 106 is a ring structure including at least one wavelength conversion region. In the present embodiment, the wavelength conversion device 106 includes a red light conversion region, a green light conversion region, a blue light conversion region, and a yellow light conversion region disposed around a circumferential segment of its annular structure. Different wavelength conversion materials (such as fluorescent materials or nano materials) are respectively disposed on the above wavelength conversion regions. Material). The above wavelength converting material is capable of converting the wavelength of ultraviolet or near-ultraviolet excitation light incident thereon into a laser of a corresponding color. Specifically, the red light conversion region converts the ultraviolet or near-ultraviolet excitation light incident thereon into a red light-receiving light, and the green light conversion region converts the ultraviolet or near-ultraviolet excitation light incident thereon into a green light-receiving light. The blue light conversion region converts the ultraviolet or near-ultraviolet excitation light incident thereon into a blue light-receiving light, and the yellow light conversion region converts the ultraviolet or near-ultraviolet excitation light incident thereon into a yellow light-receiving light. In this embodiment, a reflective substrate is further disposed under the wavelength conversion material, and further the reflected laser light converted by the wavelength conversion material is reflected, such that an exiting direction of the laser light from the wavelength conversion region and the excitation light are opposite to the wavelength conversion region. The direction of incidence is opposite.

 As shown in FIG. 2, the filter device 107 is an annular structure that is coaxially fixed to the wavelength conversion device 106 and is specifically disposed outside the ring of the wavelength conversion device 106. In other embodiments, the filter device 107 can also be disposed inside the ring of the wavelength conversion device 106. The filter device 107 includes at least one filter region. In the present embodiment, the filter unit 107 includes a red filter region, a green filter region, a blue filter region, and a yellow filter region disposed around a circumferential segment of its annular structure. The filter regions are provided corresponding to the wavelength conversion regions of the respective colors on the wavelength conversion device 106. In the present embodiment, the wavelength conversion region and the filter region of the same color are set at 180 degrees with respect to the center of the ring structure of the wavelength conversion device 106 and the filter device 107. The filter regions have different filter ranges, and then the laser light of the corresponding color is filtered to improve the color purity of the laser.

 Of course, the wavelength conversion region and the filter region of the same color may be disposed at other angles with respect to the center of the ring structure of the wavelength conversion device 106 and the filter device 107.

 As shown in Fig. 1, the driving device 108 is a rotating device having a rotating shaft 1081, such as a rotating motor. The wavelength conversion device 106 is fixed coaxially with the filter device 107 on the rotary shaft 1081, and is synchronously rotated by the rotary shaft 1081.

During the operation of the light source system 100 shown in FIG. 1, the ultraviolet or near-ultraviolet excitation light generated by the excitation light source 101 is transmitted through the dichroic mirror 102, concentrated by the lens 103, and incident on the wavelength conversion device 106. A spot 101A as shown in FIG. 2 is formed on the wavelength conversion device 106. The wavelength conversion device 106 and the filter device 107 are synchronously rotated by the driving device 108, and the respective wavelength conversion regions on the wavelength conversion device 106 are rotated in synchronization with the respective filter regions on the filter device 107. The rotation of the wavelength conversion device 106 and the filter device 107 During the process, each wavelength conversion region on the wavelength conversion device 106 is sequentially and periodically disposed on the propagation path of the ultraviolet or near-ultraviolet excitation light generated by the excitation light source 101, so that the ultraviolet or different color laser is further subjected to the above The wavelength conversion region is reflected and guided by the first optical components composed of the lenses 103 and 105 and the dichroic mirror 102 and the mirror 104, and then incident on the filter device 107 to form a spot 101B as shown in FIG.

 In the first optical assembly, lenses 103 and 105 are used to collect and concentrate the laser light, respectively, to reduce the divergence angle of the laser. The dichroic mirror 102 and the mirror 104 are used to reflect the laser light to change the direction of propagation of the laser. In the present embodiment, the dichroic mirror 102 and the reflecting mirror 104 are disposed at 90 degrees to each other and are disposed at 45 degrees with respect to the incident direction of the laser light. In the present embodiment, under the reflection of the dichroic mirror 102 and the mirror 104, the direction of propagation of the laser light is shifted by a predetermined distance and inverted by 180 degrees, and the spot 101 A and the spot 101B are opposite to the wavelength conversion device 106 and the filter. The center of the annular structure of the optical device 107 is set at 180 degrees.

 At this time, since the wavelength conversion device 106 and the filter device 107 are relatively fixed, and the wavelength conversion device 106 and the filter region of the same color on the filter device 107 are also opposite to the wavelength conversion device 106 and the filter device 107. The center of the annular structure is arranged at 180 degrees and rotates synchronously, so that it is ensured that the laser beams of different colors generated by the respective wavelength conversion regions of the wavelength conversion device 106 are incident on the filter device after being applied to the dichroic mirror 102 and the mirror 104. The filter areas of the same color on 107 are further filtered by filter areas of the same color to increase the color purity. The laser light filtered by the filter region of the filter device 107 is further incident on the light homogenizing device 109 to perform a hook-up process.

 In the light source system 100 of the present embodiment, the wavelength conversion device 106 and the filter device 107 are relatively fixed and synchronously driven by the same drive device, while simultaneously synchronizing the wavelength conversion region of the same color with the filter region by using the first optical component, The structure is simple, easy to implement and high in synchronization. In addition, the elements of the first optical component remain stationary relative to the excitation light source, avoiding rotation with the wavelength conversion device 106 and the filter device 107, and thus are more optically stable.

Further, since the laser light generated by the wavelength conversion is generally an approximate Lambertian distribution, if the laser light is directly incident on the filter region, its incident angle exists from 0 to 90 degrees. However, the transmittance of the filter region drifts as the incident angle increases, so that a concentrating device (for example, the lens 105) is further disposed in the first optical component of the embodiment to condense the laser light, so that The incident angle at which the laser is incident on the filter region is small, further improving the filtering effect. In a preferred embodiment, by adjusting the first optical component, the energy incident on the filter device 107 by the incident angle of 60 degrees or less is greater than or equal to 90% of the total energy. In the present embodiment, dichroic mirror 102 and mirror 104 may be replaced by other forms of planar reflecting means, while lenses 103 and 105 may be replaced by other forms of optical means. For example, the lens 105 can be a solid or hollow tapered light bar, a lens or lens group, a hollow or solid composite concentrator or a curved mirror, and various types of concentrating devices.

 In addition, in this embodiment, the wavelength conversion region on the wavelength conversion device 106 may be any combination of one or more of a red light conversion region, a green light conversion region, a blue light conversion region, and a yellow light conversion region, and select other A suitable light source is used as the excitation light source. Alternatively, those skilled in the art can set wavelength conversion regions of other colors and excitation light sources as needed. At this time, the filter region on the filter device 107 is configured correspondingly according to the color of the laser light generated by the wavelength conversion region on the wavelength conversion device 106, which is not limited in the present invention.

3 and FIG. 4, FIG. 3 is a schematic structural view of a second embodiment of the light source system of the present invention, and FIG. 4 is a front view of the wavelength conversion device and the filter device in the light source system shown in FIG. The light source system 200 of the present embodiment is different from the light source system 100 shown in FIGS. 1 and 2 in that the excitation light source 201 is a blue laser or a blue light emitting diode to generate blue excitation light. As shown in FIG. 4, in the embodiment, the wavelength conversion device 206 further includes a blue light transmitting region in addition to the red light conversion region, the yellow light conversion region, and the green light conversion region. The filter device 207 includes a red filter region, a yellow filter region, and a green filter region. In this embodiment, the optical filter is not optically required for the region corresponding to the blue light transmitting region of the wavelength conversion device 206, but for the balance of the rotation, the counterweight balance region may be set, and further with other filter regions. Maintain the same or similar weight. In this embodiment, under the driving of the driving device 208, the wavelength converting device 206 rotates synchronously with the filtering device 207, so that each wavelength conversion region and the blue light transmitting region on the wavelength conversion device 206 are sequentially and periodically arranged on the excitation light. The blue light generated by the light source 201 is excited on the propagation path of the light. Wherein, each wavelength conversion region converts the blue excitation light incident thereon into a laser of a corresponding color and reflects, and the blue light transmits The region transmits the blue excitation light incident thereon. A suitable scattering mechanism can be disposed on the blue light transmitting region to destroy the collimation of the blue excitation light. The laser light reflected by the wavelength conversion device 206 is guided by the first optical component composed of the lenses 203 and 205 and the dichroic mirror 202 and the mirror 204, and then incident on the filter region of the corresponding color on the filter device 207. Filtering is performed by the filter zone to increase color purity. The blue excitation light transmitted by the wavelength conversion device 206 is combined with the laser light filtered by the filter device 207 under the guidance of the second optical component formed by the lenses 210 and 213, the mirror 211, and the dichroic mirror 212. And they are incident on the homogenizing device 209 together to perform the homogenizing process.

 In the second optical component, the lenses 210 and 213 are respectively used to collect and condense the blue excitation light transmitted through the wavelength conversion device 206, and the mirror 211 and the dichroic mirror 212 are used to transmit the wavelength conversion device 206. The blue light excites light to reflect to change its propagation path. In the present embodiment, the mirror 211 and the dichroic mirror 212 are disposed in parallel with each other and are disposed at 45 degrees with respect to the incident direction of the blue excitation light so that the propagation direction of the blue excitation light is shifted by a predetermined distance and the direction remains unchanged.

 In the present embodiment, the blue light excitation light generated by the excitation light source 201 is directly output as a blue light by a transmission method. In the present embodiment, the mirror 211 and the dichroic mirror 212 can be replaced by other forms of planar reflecting means, and the lenses 210 and 213 can be replaced by other types of optical means. Further, the above structure is also applicable to a light source system using an excitation light source of another color.

 Referring to Figures 5 and 6, Figure 5 is a schematic view showing the structure of a third embodiment of the light source system of the present invention, and Figure 6 is a front elevational view of the wavelength conversion device and the filter device in the light source system shown in Figure 5. The light source system 300 of the present embodiment is different from the light source system 200 shown in FIGS. 3 and 4 in that the light source system 300 further includes a red light illumination source 315 based on the excitation light source 301 (for example, a red laser or Red light emitting diode) to generate a red light illumination. The red light source 315 and the excitation light source 301 are disposed on opposite sides of the wavelength conversion device 306 and the filter device 307, respectively. The red illumination light generated by the red illumination source 315 is incident on the wavelength conversion device 306 via the lens 314, the dichroic mirror 311, and the lens 310, and its incident direction is opposite to the incident direction of the excitation light generated by the excitation light source 301.

In this embodiment, the wavelength conversion device 306 includes a red light transmissive area, a yellow light conversion area, Green light conversion area and blue light transmission area. The filter device 307 includes a red light transmitting region, a yellow light filtering region, a green light filtering region, and a weight balancing region. In this embodiment, under the driving of the driving device 308, the wavelength converting device 306 and the filtering device 307 rotate synchronously, so that the wavelength conversion region, the red light transmitting region and the blue light transmitting region on the wavelength converting device 306 are sequentially and It is periodically disposed on the propagation path of the blue excitation light generated by the excitation light source 301 and the red illumination light generated by the red illumination source 315. Wherein, each wavelength conversion region converts the blue excitation light incident thereon into a laser light of a corresponding color and reflects, the blue light transmission region transmits the blue light excitation light incident thereon, and the red light transmission region transmits the incident light thereto. Red light on the illumination. A suitable scattering mechanism may be disposed on the blue light transmitting region and the red light transmitting region to destroy the collimation of the blue excitation light and the red illumination light. The laser light reflected by the wavelength conversion device 306 is guided by the first optical components composed of the lenses 303 and 305 and the dichroic mirror 302 and the mirror 304, and then incident on the filter region of the corresponding color on the filter device 307. Filtering is performed by the filter zone to increase color purity. The red illumination light transmitted by the wavelength conversion device 306 is guided by the first optical component consisting of the lenses 303 and 305 and the dichroic mirror 302 and the mirror 304 along the red light incident on the filter 307 along the same optical path as the laser received. The light transmissive area is transmitted through the red light transmitting area. The laser light and the filter device filtered by the filter device 307 under the guidance of the second optical component composed of the lenses 310 and 313 and the dichroic mirrors 311 and 312 by the blue light excitation light transmitted by the wavelength conversion device 306 The red illumination light transmitted by 307 is merged by the optical path, and is incident on the light hooking device 309 in common to perform the light homogenizing process.

In a preferred embodiment, to ensure that the light hooking device 309 receives only one color of light at a particular time, the rotational position of the wavelength conversion device 306 is detected and a synchronization signal is generated. The excitation light source 301 and the red illumination source 315 operate in a time division manner according to the synchronization signal. Specifically, the red light illumination source 315 is only turned on when the red light transmitting region is disposed on the propagation path of the red illumination light generated by the red illumination source 315, and is in the yellow light conversion region, the green light conversion region, and the blue light. The light transmitting region is closed when it is disposed on the propagation path of the red light. The excitation light source 301 is turned on when the yellow light conversion region, the green light conversion region, and the blue light transmission region are disposed on the propagation path of the blue light excitation light generated by the excitation light source 301, and is disposed in the red light transmission region. Turns off when the excitation light travels on the path. In addition, in another preferred embodiment, it is also possible to provide a red light illumination light and a blue light excitation light in the red light transmission region. a spectroscopic filter, a reflector for reflecting red illumination light is disposed on a side of the yellow light conversion region and the green light conversion region near the red illumination source 315, and a blue excitation light is transmitted and the red light is reflected in the blue light transmission region. Spectroscopic filter for illumination light.

 In the present embodiment, the red light output from the light source system 300 is directly generated by the red light illumination source 315, thereby avoiding the problem of low conversion efficiency of the red light conversion material. Of course, in the case where it is required to further improve the color purity, the above-mentioned red light transmitting region can be replaced with a red light filtering region. In the present embodiment, those skilled in the art will fully appreciate the use of other illumination sources to produce illumination of other colors.

 Referring to FIG. 7, FIG. 7 is a schematic structural view of a fourth embodiment of a light source system according to the present invention. The light source system 400 of the present embodiment is different from the light source system 300 shown in Figs. 5 and 6, in that the excitation light source 401 of the present embodiment employs an ultraviolet or blue light excitation source. Meanwhile, the wavelength conversion device 406 of the present embodiment is provided with a yellow light conversion region, a green light conversion region, and a red light transmission region. Therefore, the excitation light source 401 is only used to excite the yellow light conversion region and the green light conversion region to generate yellow light by laser light and green light. The light source system 400 of the present embodiment further includes a blue light illumination source 416 based on the excitation light source 401 and the red illumination source 415. The blue illumination light generated by the blue illumination source 416 is transmitted or filtered by the second optical component composed of the lenses 417 and 418 and the dichroic mirror 419, and the laser light filtered by the filter device 407 and filtered by the filter device 407. The red illumination light is merged by the optical path and is incident on the hook lighter 409 to perform the light homogenization process. In the present embodiment, the excitation light source 401, the red illumination source 415, and the blue illumination source 416 can also operate in a time-sharing manner similar to the third embodiment.

 In the present embodiment, the red light output by the light source system 300 is directly generated by the red light illumination source 415, and the blue light output by the light source system 300 is directly generated by the blue illumination source 416, thereby avoiding the problem of low conversion efficiency of the wavelength conversion material. More suitable for display areas.

Referring to FIG. 8, FIG. 8 is a schematic structural view of a fifth embodiment of a light source system according to the present invention. The light source system 500 of the present embodiment is different from the light source system 100 shown in FIGS. 1 and 2 in that the wavelength conversion device 506 transmits the laser light after the wavelength of the excitation light generated by the excitation light source 501 is converted into a laser beam. The laser light transmitted through the wavelength conversion device 506 is guided by the first optical component composed of the lenses 503 and 505 and the mirrors 502 and 504, and then incident on the filter. The filter region of the same color of the device 507 is filtered through the filter region and then incident on the hook light device 509.

 In addition, the excitation light source 501 may also be a blue light source. The wavelength conversion device 506 may further be provided with a light transmission region, which is periodically disposed on the propagation path of the excitation light generated by the excitation light source 501, and transmits the light. Excitation light. The first optical component composed of the excitation light transmitted through the light transmitting region via the lenses 503 and 505 and the mirrors 502 and 504 is guided to another light transmitting region on the filter device 507 along the same optical path as the laser beam or Filter zone for transmission or filtration.

 Referring to FIG. 9, FIG. 9 is a schematic structural view of a sixth embodiment of a light source system according to the present invention. The light source system 600 of the present embodiment is different from the light source system 500 shown in FIG. 8 in that the light source system 600 of the present embodiment further sets a red light illumination source 615 on the basis of the excitation light source 601 to generate a red light. Lighting light. The red light source 615 and the excitation light source 601 are disposed on the same side of the wavelength conversion device 606 and the filter device 607. The red light illumination light generated by the red light source 615 is reflected by the dichroic mirror 613 and condensed by the lens 611 and incident on the excitation light source 601 is incident on the wavelength conversion device 606 in the same direction. The excitation light generated by the excitation light source 601 is wavelength-converted into a laser beam by the wavelength conversion region on the wavelength conversion device 606, and transmitted through the wavelength conversion device 606. The red illumination produced by the red illumination source 615 is transmitted directly through the red light transmitting region of the wavelength conversion device 606. The received laser light and the red illumination light transmitted by the wavelength conversion device 606 are respectively incident on the filter unit 607 along the same optical path under the guidance of the mirrors 602 and 604 and the first optical components composed of the lenses 603 and 605. Light zone and red light transmission zone. The laser light filtered by the filter region and the red illumination light transmitted through the red light transmitting region are further incident on the hooking device 609. Further, the above-mentioned red light transmitting region may be replaced by a red light filtering region. In addition, the excitation light source 601 and the red illumination source 615 in this embodiment can be operated in a time division opening manner similar to that of the third embodiment.

Referring to FIG. 10, FIG. 10 is a schematic structural view of a seventh embodiment of a light source system according to the present invention. The light source system 700 of the present embodiment is different from the light source system 600 shown in FIG. 9 in that the light source system 700 of the present embodiment further provides a blue light illumination source 716 on the basis of the laser light source 701 and the red illumination source 715. . Blue light generated by the blue illumination source 716 The second optical component consisting of the light beam 717 and the dichroic mirror 718 is combined with the laser light filtered by the filter device 707 and the red illumination light filtered or transmitted by the filter device 707, and is incident on the light path. The hooking device 709 is used for the hooking process. The excitation light source 701, the red illumination source 715, and the blue illumination source 716 in this embodiment can also be operated in a time division opening manner similar to that of the third embodiment.

 Referring to FIG. 11, FIG. 11 is a schematic structural view of an eighth embodiment of a light source system according to the present invention. The light source system 800 of the present embodiment is different from the light source system 100 shown in FIG. 1 and FIG. 2 in that the excitation light generated by the excitation light source 801 of the present embodiment is condensed by the fly-eye lenses 803 and 804 and the focus lens 805. The light incident port of the reflecting device 802 is incident on the wavelength converting device 806. The laser light reflected by the wavelength conversion device 806 is reflected to the filter device 807 via a reflecting device 802 which is semi-ellipsoidal or hemispherical and whose light reflecting surface faces inward. The laser light filtered by the filter unit 807 is further incident on the tapered light guiding rod 809. Wherein, when the reflecting means 802 is semi-ellipsoidal, the reflecting means 802 can reflect the laser light from a vicinity of the focus of the reflecting means 802 to the vicinity of the other focus of the reflecting means 802. When the reflecting means 802 is hemispherical, two symmetrical points about the center of the sphere are arranged adjacent to the center of the sphere, and the reflecting means 802 can also roughly reflect the laser light of one of the symmetrical points to the other point of symmetry. In addition, in other embodiments, the reflection device 802 may not be provided with an entrance port, and the excitation light source 801 and the reflection device 802 are respectively disposed on both sides of the wavelength conversion device 806. The laser light generated by the excitation light source 801 can be further transmitted to the reflection device 802 by the laser light generated by the wavelength conversion device 806.

 It should be noted that, under the reflection of the reflecting device 802, the spot generated by the laser light source 801 generated by the laser light source 801 and the spot generated by the laser light on the filter device 807 are opposite to the wavelength converting device 806. And the center of the annular structure of the filter device 807 is set at 0 degrees, so the wavelength conversion region and the filter region of the same color on the wavelength conversion device 806 and the filter device 807 also need to be relative to the wavelength conversion device 806 and the filter device. The center of the ring structure of 807 is set at 0 degrees.

Of course, in other embodiments, the spot generated by the excitation light on the wavelength conversion device 806 and the spot generated by the laser on the filter device 807 can be adjusted by the appropriate optical mechanism relative to the wavelength conversion device 806 and the filter device 807. The center of the ring structure is set at any angle The wavelength conversion region and the filter region of the same color on the wavelength conversion device 806 and the filter device 807 are thus disposed at an arbitrary angle with respect to the center of the ring structure of the wavelength conversion device 806 and the filter device 807.

 Referring to FIG. 12, FIG. 12 is a schematic structural view of a ninth embodiment of a light source system according to the present invention. The light source system 900 of the present embodiment is different from the light source system 800 shown in Fig. 11 in that the wavelength conversion device 906 and the filter device 907 are coaxially fixed by the holder 908 and are axially spaced apart. A tapered light guide bar 909 is disposed between the wavelength conversion device 906 and the filter device 907. The excitation light generated by the excitation light source 901 is condensed by the fly-eye lenses 903 and 904 and the focus lens 905, and then incident on the wavelength conversion device 906 through the light entrance of the reflection device 902. The laser light reflected by the wavelength conversion device 906 is incident on the reflection device 902 and reflected. The laser light reflected by the reflecting means 902 first enters the light guiding rod 909. The light guide bar 909 collects the laser light to reduce the divergence angle of the laser light. The laser light guided by the light guiding rod 909 is incident on the filter device 907, so that the incident angle of the laser light on the filter device 907 is small, thereby improving the filtering effect. In the present embodiment, the light guiding rod 909 can also be replaced by other optical means capable of achieving the above functions. Further, in the present embodiment, if the wavelength converting means 906 is of a transmissive type, the reflecting means 902 can be omitted, at which time the laser light is transmitted directly to the light guiding rod 909 via the wavelength converting means 906.

 As described above, in the embodiment shown in Figs. 11 and 12, an illumination source such as a red illumination source or a blue illumination source can be further added to the basis of the excitation light sources 801 and 901.

 Referring to Figure 13, Figure 13 is a schematic view showing the structure of a tenth embodiment of the light source system of the present invention. The light source system 1000 of the present embodiment is different from the light source system 100 shown in FIG. 1 and FIG. 2 in that the wavelength conversion device 1006 of the present embodiment has a cylindrical structure, and the wavelength conversion region is disposed on the outer sidewall of the cylindrical structure. . The filter device 1007 of the present embodiment has an annular structure and the cylindrical structure is coaxially fixed. The wavelength conversion device 1006 and the filter device 1007 are further coaxially fixed to the rotating shaft of the driving device 1008, and are coaxially and synchronously rotated by the driving device 1008.

During the operation of the light source system 1000 of the present embodiment, the excitation light generated by the excitation light source 1001 is transmitted through the dichroic mirror 1002, and is concentrated by the lens 1003 and then incident on the wave. The outer side wall of the long conversion device 1006. The wavelength conversion region on the outer sidewall of the wavelength conversion device 1006 converts the excitation light into a laser beam and reflects the laser beam. The laser light reflected by the wavelength conversion device 1006 is guided by the first optical component composed of the lenses 1003 and 1004 and the dichroic mirror 1002, and then incident on the filter device 1007. The filter region on the filter device 1007 is disposed outside the cylindrical structure of the wavelength conversion device 1006, and further receives the laser light and filters the laser light to improve the color purity. The laser light filtered by the filter region of the filter device 1007 is further incident on the light hooking device 1009 to perform a hook-up process. In other embodiments, the wavelength conversion device 1006 can also transmit the received laser light to the filter device 1007.

 Referring to Figures 14, Figure 14 is a schematic view showing the structure of an eleventh embodiment of the light source system of the present invention. The light source system 1100 of the present embodiment is different from the light source system 100 shown in FIG. 1 and FIG. 2 in that the wavelength conversion device 1106 and the filter device 1107 of the present embodiment are two cylindrical tubes that are coaxially fixed and nested with each other. The structure, the wavelength conversion region and the first filter region are respectively disposed on sidewalls of the two cylindrical structures. The filter device 1107 is located outside the wavelength conversion device 1106. The wavelength conversion device 1106 and the filter device 1107 are further coaxially fixed to the rotating shaft of the driving device 1108, and are coaxially and synchronously rotated by the driving device 1108.

 During the operation of the light source system 1100 of the present embodiment, the excitation light generated by the excitation light source 1101 is reflected by the mirror 1102, concentrated by the lens 1103, and incident on the wavelength conversion device 1106. The wavelength conversion region on the wavelength conversion device 1106 converts the excitation light into a laser light and transmits the laser light. The laser light transmitted by the wavelength conversion device 1106 is guided by the first optical component composed of the lens 1104 and then incident on the filter device 1107. The filter area on the filter unit 1107 filters the laser to increase color purity. The laser light filtered by the filter region of the filter device 1107 is further incident on the light homogenizing device 1109 to perform a homogenizing process.

15 and FIG. 16, FIG. 16 is a schematic structural view of a twelfth embodiment of the light source system of the present invention, and FIG. 16 is a front view of the wavelength conversion device and the filter device in the light source system shown in FIG. The light source system 1200 of the present embodiment is different from the light source system 200 shown in FIG. 3 and FIG. 4 in that the wavelength conversion device 1206 and the filter device 1207 of the present embodiment are two strip-shaped structures connected end to end, a wavelength conversion region. And the first filter zone is arranged side by side on the two strip structures. In this embodiment, the wavelength conversion device 1206 further includes a red light conversion region, a green light conversion region, a blue light transmission region, and a yellow light conversion region which are arranged side by side and arranged from top to bottom. The filter device 1207 includes red light filter regions, green light filter regions, vacant regions, and yellow light filter regions arranged side by side and sequentially from top to bottom.

 The reciprocating linear translation is performed by the wavelength conversion device 1206 and the filter device 1207 under the driving of a suitable driving device (for example, a linear motor), so that the red light conversion region, the green light conversion region, and the blue light on the wavelength conversion device 1206 are transparent. The light region and the yellow light conversion region are periodically disposed on a propagation path of the blue light excitation light generated by the excitation light source 1201. Wherein each of the wavelength conversion regions converts the blue excitation light incident thereon into a laser light of a corresponding color and reflects it, and the blue light transmission region transmits the blue light excitation light incident thereon. A suitable scattering mechanism can be disposed on the blue light transmitting region to destroy the collimation of the blue excitation light. The laser light reflected by the wavelength conversion device 1206 is guided by the first optical component composed of the lenses 1203 and 1205, the dichroic mirror 1202, and the mirror 1204, and then incident on the filter region of the corresponding color on the filter device 1207. Filtering is performed by the filter zone to increase color purity. The blue excitation light transmitted by the wavelength conversion device 1206 is combined with the laser light filtered by the filter device 1207 under the guidance of the second optical component formed by the lenses 1210 and 1213, the mirror 1211 and the dichroic mirror 1212, And incident on the light hooking device 1209 together for the hooking process. The structures of the wavelength conversion device 1206 and the filter device 1207 of the present embodiment are equally applicable to the other embodiments described above, and are not described herein again.

 The present invention further provides a light source unit comprising the wavelength conversion device and the filter device of the above embodiment.

 In summary, the light source system and the light source device of the present invention are relatively fixed to the wavelength conversion device and driven by the same driving device, and have the advantages of simple structure, easy implementation, and high synchronization.

 The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the specification and the drawings of the present invention may be directly or indirectly applied to other related technologies. The scope of the invention is included in the scope of patent protection of the present invention.

Claims

Claim
A light source system, wherein the light source system comprises:
 An excitation light source for generating an excitation light;
 a wavelength conversion device, the wavelength conversion device includes at least one wavelength conversion region; a filter device, the filter device is relatively fixed to the wavelength conversion device, and includes at least one first filter region;
 a driving device, configured to drive the wavelength conversion device and the filtering device to synchronously move the wavelength conversion region and the first filter region, and the wavelength conversion region is periodically disposed on the excitation light a wavelength of the excitation light, which is further converted into a laser light; a first optical component for guiding the laser light to be incident on the first filter region, the first filter region Filtered by a laser to increase the color purity of the laser.
 The light source system according to claim 1, wherein the wavelength conversion device and the filter device are two annular structures that are coaxially fixed.
 The light source system according to claim 2, wherein the driving device is a rotating device having a rotating shaft, and the two annular structures are coaxially fixed to the rotating shaft.
 The light source system according to claim 2, wherein the wavelength conversion region and the first filter region are disposed at 180 degrees with respect to a center of the two annular structures, the first optical component It is arranged such that a spot formed by the excitation light on the wavelength conversion device and a spot formed by the laser light on the filter device are disposed at 180 degrees with respect to a center of the two annular structures.
 The light source system according to claim 2, wherein the wavelength conversion region and the first filter region are disposed at 0 degrees with respect to a center of the two annular structures, the first optical component It is disposed such that a spot formed by the excitation light on the wavelength conversion device and a spot formed by the laser light on the filter device are disposed at 0 degrees with respect to a center of the two annular structures.
The light source system according to claim 2, wherein the wavelength conversion device is axially spaced from the filter device, and the first optical component includes a At least one light collecting device between the wavelength conversion device and the filter device region, the light collecting device collecting the received laser light such that an incident angle of the laser light incident to the filter device is less than or equal to 60 The energy in the range is more than 90% of the total energy.
 7. The light source system according to claim 1, wherein the wavelength conversion region is configured to reflect the received laser light such that an exiting direction of the received laser light from the wavelength conversion region is opposite to the excitation light The incident direction of the wavelength conversion region is opposite.
 The light source system according to claim 1, wherein the wavelength conversion region is configured to transmit the laser light receiving light so that an outgoing direction of the laser light receiving region from the wavelength conversion region is opposite to the excitation light The incident direction of the wavelength conversion region is the same.
 9. The light source system according to claim 1, wherein the first optical component comprises at least one light collecting device, the light collecting device collects the received laser light, and causes the incident of the laser light to be incident on The energy of the filter device having an incident angle of 60 degrees or less accounts for more than 90% of the total energy.
 10. The light source system according to claim 1, wherein the first optical component comprises at least one reflecting device, and the reflecting device reflects the laser light to change a direction of propagation of the laser light. The reflecting device is a planar reflecting device or a reflecting device that is semi-ellipsoidal or hemispherical with the light reflecting surface facing inward.
 11. The light source system according to claim 10, wherein the planar reflecting means comprises a dichroic mirror or a mirror.
 The light source system according to claim 10, wherein the reflecting device having a semi-ellipsoidal shape or a hemispherical shape and having a light reflecting surface facing inward is provided with an optical entrance, and the excitation light passes through the inlet The optical port is incident on the wavelength conversion device.
 The light source system according to claim 1, wherein the wavelength conversion device comprises a first light transmissive region, and the first light transmissive region is periodically disposed on the excitation by the driving device In the propagation path of the light, the first light transmitting region transmits the excitation light.
 14. The light source system of claim 13, wherein the light source system further comprises a second optical component, the second optical component transmitting the excitation light and the light transmitted through the first light transmissive region The laser light filtered by the first filter region combines optical paths.
The light source system according to claim 13, wherein the filter device Including a second light transmitting region or a second filter region, the first optical component guides the excitation light transmitted through the first light transmitting region to the second along the same optical path as the laser light receiving a light transmissive region or the second filter region for transmission or filtration.
 The light source system according to claim 1, wherein the light source system further comprises an illumination light source, the illumination light source generates an illumination light, and the wavelength conversion device further comprises a first light transmission area The first light transmitting region is periodically disposed on the propagation path of the illumination light under the driving of the driving device, and the first light transmitting region transmits the illumination light, and the filtering device further includes a first a second light transmitting region or a second filter region, the first optical component guiding the illumination light transmitted through the first light transmitting region to the second light transmitting along an optical path identical to the laser light receiving a zone or the second filter zone for transmission or filtration.
 The light source system according to claim 1, wherein the light source system further comprises an illumination light source and a second optical component, the illumination light source generates an illumination light, and the second optical component The illumination light is combined with the laser light path filtered by the first filter region.
 The light source system according to claim 1, wherein the wavelength conversion device is a cylindrical structure, the filter device is an annular structure, and is coaxially fixed with the cylindrical structure, Rotating coaxially and synchronously under the drive of the drive device.
 The light source system according to claim 18, wherein the wavelength conversion region is disposed on an outer sidewall of the cylindrical structure and reflects the laser light, and the first filter region is disposed on the The annular structure is located outside the cylindrical structure to receive the laser light.
 The light source system according to claim 1, wherein the wavelength conversion device and the filter device are two cylindrical structures that are coaxially fixed and nested with each other to drive the driving device Rotating coaxially and synchronously, the wavelength conversion region and the first filter region are respectively disposed on sidewalls of the two cylindrical structures, and the laser light is transmitted through the wavelength conversion region to the first A filter zone.
The light source system according to claim 1, wherein the wavelength conversion device and the filter device are two strip structures that are end to end, the wavelength conversion region and the first filter The zones are arranged side by side on the two strip structures, and the driving device drives the The two strip structures perform a reciprocating linear translation.
 22. A light source assembly, wherein the light source assembly comprises:
 a wavelength conversion device, the wavelength conversion device includes at least one wavelength conversion region; a filter device, the filter device is relatively fixed to the wavelength conversion device, and includes at least one filter region, such that the wavelength conversion region The filter zone is moved synchronously under the drive of the drive.
 The light source module according to claim 22, wherein the wavelength conversion device and the filter device are two annular structures that are coaxially fixed.
 The light source module according to claim 22, wherein the wavelength conversion device has a cylindrical structure, and the filter device has an annular structure and is coaxially fixed to the cylindrical structure.
 The light source assembly according to claim 24, wherein the wavelength conversion region is disposed on an outer sidewall of the cylindrical structure, and the filter region is disposed on the annular structure and located at the The outside of the cylindrical structure.
 The light source module according to claim 22, wherein the wavelength conversion device and the filter device are two cylindrical structures that are coaxially fixed and nested with each other, the wavelength conversion region and the Filter regions are respectively disposed on sidewalls of the two cylindrical structures.
 The light source module according to claim 22, wherein the wavelength conversion device and the filter device are two strip-shaped structures that are connected end to end, and the wavelength conversion region and the filter region are arranged side by side. Provided on the two strip structures.
 A projection system, comprising the light source system according to any one of claims 1-21.
PCT/CN2011/083651 2010-12-08 2011-12-07 Projection system, light source system, and light source assembly WO2012075947A1 (en)

Priority Applications (6)

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CN201010579909 2010-12-08
CN201010579909.9 2010-12-08
CN201010624857.2 2010-12-30
CN201010624857 2010-12-30
CN201110191454.8A CN102566230B (en) 2010-12-08 2011-07-08 Projection system, light source system and light source component
CN201110191454.8 2011-07-08

Applications Claiming Priority (4)

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US13/992,243 US9631792B2 (en) 2010-12-08 2011-12-07 Light source system employing wavelength conversion materials and color filters
US15/495,853 US10042240B2 (en) 2010-12-08 2017-04-24 Projection system, light source system and light source assembly
US15/495,834 US10073334B2 (en) 2010-12-08 2017-04-24 Projection system, light source system and light source assembly
US15/495,844 US9904158B2 (en) 2010-12-08 2017-04-24 Projection system, light source system and light source assembly

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US13/992,243 A-371-Of-International US9631792B2 (en) 2010-12-08 2011-12-07 Light source system employing wavelength conversion materials and color filters
US201313992243A A-371-Of-International 2013-06-06 2013-06-06
US15/495,853 Continuation US10042240B2 (en) 2010-12-08 2017-04-24 Projection system, light source system and light source assembly
US15/495,834 Continuation US10073334B2 (en) 2010-12-08 2017-04-24 Projection system, light source system and light source assembly
US15/495,844 Continuation US9904158B2 (en) 2010-12-08 2017-04-24 Projection system, light source system and light source assembly

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