CN110928121A - Light source system and projection equipment - Google Patents
Light source system and projection equipment Download PDFInfo
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- CN110928121A CN110928121A CN201811103141.0A CN201811103141A CN110928121A CN 110928121 A CN110928121 A CN 110928121A CN 201811103141 A CN201811103141 A CN 201811103141A CN 110928121 A CN110928121 A CN 110928121A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
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- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
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Abstract
The invention provides a light source system and projection equipment adopting the light source system, wherein the light source system comprises a light source, a light splitting device, a wavelength conversion device, a homogenizing device arranged between the wavelength conversion device and the light splitting device and a light path adjusting device used for adjusting a light path; the light path adjusting device is arranged opposite to the light splitting device and used for adjusting the direction of the light beam emitted from the light splitting device; the excitation light is converted into the stimulated light through the wavelength conversion device after being homogenized by the homogenizing device, the stimulated light enters the homogenizing device in a reverse direction with the incident direction of the excitation light for homogenization, the stimulated light homogenized by the homogenizing device forms emergent light through the light splitting device and the light path adjusting device, and the homogenizing device homogenizes the excitation light and the stimulated light at the same time. The light source system of the invention realizes twice homogenization of the light path by only adopting one homogenization device through the design of the light path, can save space, reduce cost, effectively improve projection effect, make light uniform and have good user experience.
Description
Technical Field
The invention relates to the technical field of optics, in particular to the field of projection display.
Background
Currently, projection displays are applied to various aspects of life, and the core part of the projection displays is a spatial light modulator. Typical spatial light modulators include MEMS (Micro Electro Mechanical System) technology Digital Micromirror Device DMD (Digital Micromirror Device), HTPS (High temperature poly-Silicon) LCD display chip, and reflective LCD Device LCOS. Projection systems are generally classified into monolithic and three-plate projection systems, depending on the number of spatial light modulators in the projection system. The single-chip projection system occupies most of the middle and low-end market due to its simple structure and low cost. Most spatial light modulators are passive at present, requiring illumination with a high color and brightness uniformity. Therefore, a more complex optical system and combination of light sources must be designed to obtain a uniform and bright light source system. For example, in a monolithic DMD system, the light source needs to provide RGB illumination light in a time sequence. Therefore, monochromatic light which needs to be started in a time sequence in the light source system or a transmission waveband which needs to be changed in a time sequence is realized through the optical filter. In order to provide uniform illumination, a light source system must be provided with a homogenizing device such as a square bar to homogenize light.
In a projection system in the prior art, a plurality of homogenizing devices are generally required to homogenize light beams of different light paths such as an excitation light path and a stimulated light path, for example, in a light path of a laser excited phosphor, a homogenizing device is required to be added to shape a laser beam with gaussian distribution into a geometric light spot with uniform distribution, so as to excite the phosphor to generate high-brightness fluorescence; in the illumination light path of the spatial light modulator, the illumination light needs to be homogenized by a homogenizing device, and a uniform illumination spot is imaged on the surface of the spatial light modulator to obtain a uniform projection image. The introduction of these devices not only increases the cost of the system, but also increases the difficulty of the optical design and the space volume of the system.
Therefore, there is a need to provide a new light source system to solve the above problems.
Disclosure of Invention
The invention mainly solves the technical problem of providing a light source system and a projection device, which can save space, reduce cost, effectively improve projection effect, make light uniform and have good user experience.
In order to solve the technical problems, the invention adopts a technical scheme that: providing a light source system, wherein the light source system comprises a light source for emitting exciting light, a light splitting device arranged in front of the light source, a wavelength conversion device arranged on the light path of the exciting light, a homogenizing device arranged between the wavelength conversion device and the light splitting device, and a light path adjusting device for adjusting the light path; the light path adjusting device is arranged opposite to the light splitting device and used for adjusting the direction of the light beam emitted from the light splitting device; the exciting light passes through arrive behind the homogenization device the wavelength conversion device converts to receiving the laser, receive the laser along the direction opposite with the incident direction of exciting light entering homogenization device homogenization, the warp homogenization device homogenization the exciting light passes through the beam splitting device with light path adjusting device forms the emergent light, the homogenization device is simultaneously right exciting light sum receive the laser and carry out the homogenization.
Preferably, the wavelength conversion device comprises at least two phosphor powder areas and a specular reflection area which sequentially pass through the light path of the excitation light.
Preferably, a central region of the optical splitter is provided with a coating film through which the excitation light passes, a peripheral region of the optical splitter is a high-reflection lens, the excitation light is transmitted to the wavelength conversion device through the central region of the optical splitter, and the received laser light is reflected by the optical splitter.
Preferably, the homogenizing device is a fly-eye lens, a micro-lens unit is arranged on the fly-eye lens, and the micro-lens unit converts the surface distribution of light spots on the surface of one side far away from the wavelength conversion device into the angle distribution of the emergent light.
Preferably, the angle distribution of the excitation light rays emitted after being homogenized by the homogenizing device is the same as that of the stimulated light rays. .
Preferably, the light source further includes a relay system for adjusting the optical path, and the relay system includes a first relay lens disposed between the light splitting device and the optical path adjusting device and a second relay lens disposed between the receiving device and the optical path adjusting device.
Preferably, the light collection system comprises at least one convex lens.
Preferably, the optical path of the excitation light entering the uniformizing device and the optical path of the excitation light emitted from the uniformizing device are parallel to each other and do not overlap with each other.
Preferably, the light source includes a first light source that emits first excitation light and a second light source that emits second excitation light, and the first excitation light and the second excitation light have different polarization states.
Preferably, the light splitting device includes a first polarization region that reflects the second excitation light and transmits the first excitation light, and a second polarization region that reflects the first excitation light and transmits the second excitation light.
Preferably, a quarter-wave plate is further arranged between the homogenizing device and the light splitting device, and the specular reflection area is coated with a polarization-maintaining scattering material.
Preferably, the light source system further includes a second light source emitting second light, and a reflector, the second light source generating second light for increasing the display color gamut, and the second light is mixed with the received laser light by the reflector to increase the display color gamut of the light source system, and the reflector is used for guiding the second light to the homogenizing device.
In order to solve the technical problem, the invention adopts another technical scheme that: there is provided a projection device comprising a light source system as defined in any of the preceding.
The invention has the beneficial effects that: the invention provides a light source system and a projection device adopting the light source system, wherein the light source system comprises a light source for emitting exciting light, a light splitting device arranged in front of the light source, a wavelength conversion device arranged on the light path of the exciting light, a homogenizing device arranged between the wavelength conversion device and the light splitting device, and a light path adjusting device for adjusting the light path; the light path adjusting device is arranged opposite to the light splitting device and used for adjusting the direction of the light beam emitted from the light splitting device; the exciting light passes through arrive behind the homogenization device the wavelength conversion device converts to receiving the laser, receive the laser along the direction opposite with the incident direction of exciting light entering homogenization device homogenization, the warp homogenization device homogenization the exciting light passes through the beam splitting device with light path adjusting device forms the emergent light, the homogenization device is simultaneously right exciting light sum receive the laser and carry out the homogenization. According to the light source system, through the design of the light path, the light path of the excited light and the light path of the exciting light are overlapped and pass through the same homogenizing device, and only one homogenizing device is adopted to realize twice homogenization of the light path, so that the space can be saved, the cost can be reduced, the projection effect can be effectively improved, the light is uniform, and the good user experience is realized.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a light source system according to the present invention;
FIG. 2 is a schematic structural diagram of a wavelength conversion device according to a first embodiment of the light source system of the present invention;
FIG. 3 is a schematic structural diagram of a light splitting device of a first embodiment of a light source system according to the present invention;
FIG. 4 is a schematic illustration of the angular distribution of a first embodiment of the light source system of the present invention on a spatial light modulator;
FIG. 5 is a schematic structural diagram of a second embodiment of a light source system according to the present invention;
FIG. 6 is a schematic structural diagram of a light splitting device of a second embodiment of a light source system according to the present invention;
FIG. 7 is a schematic illustration of the angular distribution of a second embodiment of the light source system of the present invention on a spatial light modulator;
FIG. 8 is a schematic structural diagram of a third embodiment of a light source system according to the present invention;
fig. 9 is a schematic structural diagram of a fourth embodiment of the light source system of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 1 to 4, the light source system provided by the present invention includes a light source 101, a uniformizing device 202, a wavelength conversion device 204, a light collecting system 105, a relay system 106, a light splitting device 207, and a light path adjusting device 107.
The light source 101 is used for emitting a light source of excitation light, the light splitting device 207 is disposed on one side of the light source along an optical path of the excitation light, specifically, in the present embodiment, the light source 101 is a blue laser emitting blue excitation light, the light splitting device 207 is a light splitting lens, and the optical path adjusting device 107 is a reflecting device in the present embodiment, and may also be a transmitting device in alternative embodiments. The excitation light emitted by the light source 101 enters the wavelength conversion device 204 obliquely, that is, when the excitation light emitted by the light source 101 enters the light collection system 105, the principal axis of the beam of the excitation light does not overlap with the optical axis of the light collection system 105. Specifically, the excitation light emitted from the light source 101 enters the uniformizing device 202 for uniformization under the guidance of the light splitting device 207, the uniformized excitation light enters the light collection system 105 in a direction deviated from the main optical axis of the light collection system 105, and is obliquely incident on the wavelength conversion device 204.
The wavelength conversion device 204 is a color wheel, and includes at least two phosphor powder 2042 regions and a specular reflection region 2041 which sequentially pass through the light path of the excitation light. Excitation light emitted by the light source enters the homogenizing device 202 as incident light and is homogenized, and then is converted into stimulated light by the wavelength conversion device 204. The combined light of the reflected light of the received laser and the excitation light at the wavelength conversion device 204 enters the uniformizing device 202 along the irradiation direction opposite to the incident light for uniformization, and the excited light uniformized by the uniformizing device forms the emergent light through the light splitting device 207 and the light path adjusting device 107.
As shown in fig. 2, in the present embodiment, the phosphor regions 2042 of the wavelength conversion device 204 include a red phosphor region R and a green phosphor region G, and the specular reflection region 2041 is a B region disposed between the two phosphor regions 2042. The exciting light is excited in the red fluorescent powder area to form red fluorescent light, the exciting light is excited in the green fluorescent area to form green fluorescent light, and the incident exciting light is reflected in the mirror reflection area. The light source system of the present invention is applied to a projection apparatus, in which a spatial light modulator 108 and a receiving device 109 are disposed, and the receiving device 109 is specifically a projection lens in this embodiment, wherein the spatial light modulator 108 is disposed in front of the receiving device, the outgoing light is adjusted by the spatial light modulator 108 to form image light carrying image information, and the receiving device 109 projects the image light to form a projection image. The light path of the exciting light and the light path of the emergent light are parallel to each other and do not coincide with each other. Specifically, the received laser light after passing through the homogenizing device forms an outgoing optical path parallel to the optical path of the incident light by multiple reflections of the beam splitter 207 and the optical path adjusting device 107. Specifically, in the present embodiment, the optical path adjusting device 107 is a planar mirror. One side of the light splitting device 207 is used for realizing transmission of the excitation light, and the other side surface has a reflection function. Preferably, the angle between the reflective mirror and the light splitting device 207 is a right angle, so that the optical path of the emergent light is formed to be parallel to the optical path of the incident light.
As shown in fig. 3, the central region of the spectroscopic device 207 is provided with a plating film 2071 through which excitation light passes, and the peripheral region of the spectroscopic device 207 is a highly reflective lens 2072. Specifically, in this embodiment, the plating film in the central region is a blue-transmitting and yellow-reflecting plating film. The blue excitation light emitted from the light source is transmitted to the wavelength conversion device 204 through the central region, and is reflected by the surface of the light splitter 207 on the side away from the light source 101 after passing through the wavelength conversion device 204.
The homogenizing device 202 and the light collection system 105 are disposed between the light source 101 and the wavelength conversion device 204. The light collection system 105 includes at least one convex lens, and in particular in this embodiment, there are three convex lenses in common. Excitation light emitted by the light source is homogenized by the homogenizing device 202, then is collected by the light collecting system 105 and then enters the wavelength conversion device 204 at a small angle for conversion, and the formed combined light of the reflected light of the excited light and the excitation light at the wavelength conversion device 204 is homogenized by the homogenizing device 202 again after the back diffusion effect of the light collecting system 105 and then is transmitted to the receiving device 109 through the light splitting device 207 and the reflector 107 to form emergent light. The light path of the exciting light coincides with that of the stimulated light, and the exciting light and the stimulated light are combined through the same homogenizing device 202.
Preferably, the homogenizing device 202 is a fly-eye lens, and the fly-eye lens is provided with micro lens units arranged in a matrix for converting a surface distribution of a surface on one side far away from the wavelength conversion device into an angular distribution of the emergent light. So that the angular distribution of the excitation light emitted after being homogenized by the homogenizing device is the same as that of the stimulated light.
The relay system 106 is used for adjusting the optical path, and in the present embodiment, the relay system 106 includes a first relay lens 106a disposed between the light splitting device 207 and the optical path adjusting device 107, and a second relay lens 106b disposed between the receiving device 109 and the optical path adjusting device 107.
Referring to fig. 4, after the homogenized illumination light is completely reflected by the light splitting device 207, a uniform illumination spot is formed on the surface of the spatial light modulator 108 by the action of the first relay lens 106a, the optical path adjusting device 107 and the second relay lens 106 b. According to the conversion relationship of the etendue, the microlens unit on the left surface of the uniformizing device 202 is overlapped and imaged on the surface of the spatial light modulator 108. The blue illumination light, the red fluorescence and the green fluorescence cover a plurality of units on the left surface of the uniformizing device 202, so that a complete and uniform illumination spot is formed at the spatial light modulator 108 after the uniformizing at the uniformizing device 202. While the spot-plane distribution on the right surface of the uniformizer 202 translates into the angular distribution of the illumination light at the spatial light modulator 108, as shown in fig. 4, the red-green phosphor 1081 occupies the entire spatial light modulator 108, while the blue illumination light 1082 occupies only the upper half of the area 202, so that the angular distribution of the blue illumination light incident on the spatial light modulator 108 is not a complete circle.
Example two
As shown in fig. 5 and 6, a second embodiment of the present invention is an improvement of the first embodiment, and in substantially the same way as the first embodiment, the light source system includes a light source 101, a uniformizing device 202, a wavelength conversion device 204, a light collecting system 105, a relay system 106, a light splitting device 207, a mirror 107, a spatial light modulator 108, and a receiving device 109. The only difference is that in the present embodiment, the light source 101 includes a first light source 101a that emits first excitation light and a second light source 101b that emits second excitation light, which are different in polarization state. The first light source 101a emits a blue laser beam of p-polarization state, and the second light source 101b emits a blue laser beam of s-polarization state. The light splitting device 207 includes a first polarization region (a region) that reflects the second excitation light and transmits the first excitation light, and a second polarization region (B region) that reflects the first excitation light and transmits the second excitation light. Thus, the first light source 101a and the second light source 101b are respectively transmitted from the corresponding regions.
As shown in fig. 7, in the present embodiment, the blue illumination light beam emitted from the right surface of the uniformizing device 202 can fill the entire emission surface, and therefore, when converted into the angular distribution at the spatial light modulator 108, the angular distribution of the blue illumination light 1082 is the same as that of the red/green fluorescence 1081, and a better color uniformity can be obtained.
EXAMPLE III
As shown in fig. 8, a third embodiment of the present invention is an improvement of the above-described embodiments, and is substantially the same as the first two embodiments, and the light source system includes a light source 101, a uniformizing device 202, a wavelength conversion device 304, a light collection system 105, a relay system 106, a light splitting device 307, a mirror 107, a spatial light modulator 108, and a receiving device 109. The only difference is that in this embodiment, a quarter-wave plate 302 is further disposed between the uniformizing device 202 and the light splitting device 307, and the specular reflection region of the wavelength conversion device 304 is coated with a polarization-maintaining scattering material. Specifically, in this embodiment, a silver material is coated. Since the blue excitation light and the blue illumination light pass through the quarter-wave plate 302 twice in the process of entering and exiting the uniformizing device 202, the polarization states of the blue excitation light and the blue illumination light are changed, the blue excitation light and the blue illumination light are reflected at the reflecting mirror 307, and the blue excitation light and the blue illumination light form the same light distribution as red light and green light and enter the spatial light modulator 108, so that better uniformity can be achieved.
Example four
As shown in fig. 9, a fourth embodiment of the present invention is an improvement of the foregoing embodiments, and is substantially the same as the foregoing embodiments, and the light source system includes a light source 101, a uniformizing device 202, a wavelength conversion device 204, a light collecting system 105, a relay system 106, a light splitting device 207, a mirror 107, a spatial light modulator 108, and a receiving device 109. The difference is that in this embodiment, the light source system further includes an illumination system for increasing the display color gamut of the system, which includes a second light source 201 for generating second light for increasing the display color gamut, a condenser mirror 205 for irradiating the second light to the surface of the uniformizing device on the side close to the wavelength converter, and a reflecting mirror 407. The second light source 201 is a red laser or a green laser, and the second light is mixed with the received laser through the reflector to improve the display color gamut of the light source system. A laser relay lens 203 is also arranged in front of the second light source 201. The reflector 407 is a small reflector with blue-transmitting and yellow-reflecting coating properties.
The blue excitation light emitted by the light source 101 is transmitted to the light splitting device 207, is homogenized by the homogenizing device 202, and then is acted on the surface of the wavelength conversion device 204 by the condenser lens 205 and the light collecting system 105 to form a uniform excitation light spot, the excitation wavelength conversion device 204 generates sequential blue illumination light and fluorescence excited light, and the sequential blue illumination light and fluorescence excited light are incident on the homogenizing device 202 at a small angle through the light collecting system 105 and the condenser lens 205, and are homogenized by the homogenizing device 202 and then are acted on the spatial light modulator 108 by a subsequent optical system to form a uniform light spot. The red and green laser emitted by the second light source 201 is converged at the reflector 407 by the laser relay mirror 203, reflected at a certain divergence angle at the reflector 407, enters the homogenizing device 202 at a smaller angle after being acted by the condenser mirror 205, and forms a uniform illumination spot at the spatial light modulator 108 after being homogenized by the homogenizing device 202 so as to improve the display color gamut of the system.
The invention has the beneficial effects that: the invention provides a light source system and a projection device adopting the light source system, wherein the light source system comprises a light source for emitting exciting light, a light splitting device arranged in front of the light source, a wavelength conversion device arranged on the light path of the exciting light, a homogenizing device arranged between the wavelength conversion device and the light splitting device, and a light path adjusting device for adjusting the light path; the light path adjusting device is arranged opposite to the light splitting device and used for adjusting the direction of the light beam emitted from the light splitting device; the exciting light passes through reach behind the homogenization device wavelength conversion equipment converts to by the laser, receive the laser along with the incident direction reverse entering of exciting light homogenization device homogenization, the warp homogenization device homogenization the exciting light passes through the beam splitting device with light path adjusting device forms the emergent light, the homogenization device is simultaneously right exciting light with receive the laser and carry out the homogenization. According to the light source system, through the design of the light path, the light path of the excited light and the light path of the exciting light are overlapped and pass through the same homogenizing device, and only one homogenizing device is adopted to realize twice homogenization of the light path, so that the space can be saved, the cost can be reduced, the projection effect can be effectively improved, the light is uniform, and the good user experience is realized.
The invention also provides projection equipment which comprises the light source system and has the characteristics of uniform projection, good effect and smaller occupied space.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A light source system is characterized by comprising a light source for emitting exciting light, a light splitting device arranged in front of the light source, a wavelength conversion device arranged on the light path of the exciting light, a homogenizing device arranged between the wavelength conversion device and the light splitting device, and a light path adjusting device for adjusting the light path; the light path adjusting device is arranged opposite to the light splitting device and used for adjusting the direction of the light beam emitted from the light splitting device; the exciting light passes through arrive behind the homogenization device the wavelength conversion device converts to receiving the laser, receive the laser along the direction opposite with the incident direction of exciting light entering homogenization device homogenization, the warp homogenization device homogenization the exciting light passes through the beam splitting device with light path adjusting device forms the emergent light, the homogenization device is simultaneously right exciting light sum receive the laser and carry out the homogenization.
2. The light source system of claim 1, wherein the wavelength conversion device comprises at least two phosphor regions and a specular reflection region that sequentially pass through the path of the excitation light.
3. The light source system according to claim 2, wherein a central region of the light splitting device is provided with a coating for allowing the excitation light to pass therethrough, peripheral regions of the light splitting device are high-reflection lenses, the excitation light is transmitted to the wavelength conversion device through the central region of the light splitting device, and the received laser light is reflected by the light splitting device.
4. A light source system according to claim 3, wherein the homogenizing device is a fly-eye lens on which a microlens unit is disposed, the microlens unit converting a surface distribution of a side surface away from the wavelength conversion device into an angular distribution at the outgoing light.
5. The light source system according to claim 4, wherein the excitation light homogenized by the homogenizing device is emitted with the same angular distribution as the stimulated light.
6. The light source system according to claim 1, wherein the light source further comprises a relay system for adjusting the optical path, the relay system comprising a first relay lens disposed between the light splitting device and the optical path adjusting means and a second relay lens disposed after the optical path adjusting means.
7. The light source system of claim 1, further comprising a light collection system comprising at least one convex lens.
8. The light source system according to claim 1, wherein a light path of the excitation light entering the uniformizing means and a light path of the excitation light exiting from the uniformizing means are parallel to each other and do not coincide with each other.
9. The light source system according to claim 2, wherein the light source includes a first light source that emits first excitation light and a second light source that emits second excitation light, the first excitation light and the second excitation light having different polarization states.
10. The light source system of claim 9, wherein the light splitting device comprises a first polarizing region that reflects the second excitation light and transmits the first excitation light and a second polarizing region that reflects the first excitation light and transmits the second excitation light.
11. The light source system of claim 2, wherein a quarter-wave plate is further disposed between the uniformizing device and the light splitting device, and the specular reflection region is coated with a polarization-maintaining scattering material.
12. The light source system of claim 2, further comprising a second light source emitting a second light, and a mirror, the second light being mixed with the stimulated light by the mirror to increase a display color gamut of the light source system, the mirror being configured to direct the second light to the homogenizing device.
13. A projection device comprising a light source system as claimed in any one of claims 1 to 12.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103141.0A CN110928121B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection equipment |
| CN202210112822.3A CN114563908B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection device |
| PCT/CN2019/100490 WO2020057299A1 (en) | 2018-09-20 | 2019-08-14 | Light source system and projection equipment |
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| CN201811103141.0A CN110928121B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020216264A1 (en) * | 2019-04-24 | 2020-10-29 | 深圳光峰科技股份有限公司 | Light source system and display device |
| CN112631054A (en) * | 2020-11-23 | 2021-04-09 | 无锡视美乐激光显示科技有限公司 | Laser light source structure, projection optical system and color temperature adjusting method thereof |
| WO2022037416A1 (en) * | 2020-08-20 | 2022-02-24 | 深圳光峰科技股份有限公司 | Light recycling assembly and projection device |
| CN115167067A (en) * | 2022-05-30 | 2022-10-11 | 歌尔股份有限公司 | Projection system and head-mounted device |
| CN115542649A (en) * | 2022-11-24 | 2022-12-30 | 深圳市橙子数字科技有限公司 | Projection lighting source device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114563908B (en) | 2024-04-05 |
| CN114563908A (en) | 2022-05-31 |
| CN110928121B (en) | 2022-03-25 |
| WO2020057299A1 (en) | 2020-03-26 |
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