CN114563908B - Light source system and projection device - Google Patents
Light source system and projection device Download PDFInfo
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- CN114563908B CN114563908B CN202210112822.3A CN202210112822A CN114563908B CN 114563908 B CN114563908 B CN 114563908B CN 202210112822 A CN202210112822 A CN 202210112822A CN 114563908 B CN114563908 B CN 114563908B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 43
- 238000000265 homogenisation Methods 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims description 92
- 238000009826 distribution Methods 0.000 claims description 19
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- 239000000843 powder Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 description 25
- 238000005286 illumination Methods 0.000 description 23
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
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- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
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Classifications
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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
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 for adjusting a light path; the light path adjusting device is arranged opposite to the light splitting device and is used for adjusting the direction of the light beam emitted from the light splitting device; the excited light is homogenized by the homogenizing device and then is converted into laser light by the wavelength conversion device, the laser light enters the homogenizing device reversely along the incident direction of the excited light for homogenization, the laser light homogenized by the homogenizing device forms emergent light by the light splitting device and the light path regulating device, and the homogenizing device simultaneously homogenizes the excited light and the laser light. The light source system realizes twice homogenization of the light path by adopting only one homogenizing device through the design of the light path, can save space, reduce cost, effectively improve projection effect, ensure uniform light and have good user experience.
Description
The application is as follows: the filing number is 201811103141.0, the filing date is 2018, 09, 20, and the filing number is a divisional filing of a light source system and a projection device.
Technical Field
The invention relates to the technical field of optics, in particular to the field of projection display.
Background
Projection displays are currently used in various aspects of life, the core of which is a spatial light modulator. Typical spatial light modulators are MEMS (micro-electromechanical systems) technology digital micromirror devices DMD (Digital Micromirror Device, digital micromirror element), HTPS (High Temperature Poly-Silicon high temperature polysilicon) LCD display chips and reflective LCD devices LCOS. Depending on the number of spatial light modulators in the projection system, it is generally classified into one-piece and three-piece projection systems. The single-chip projection system has a simple structure and low cost, and occupies most of the middle-low end market. Most of the current spatial light modulators are passive, and require illumination light with high color and brightness uniformity. It is therefore necessary to design a combination of a relatively complex optical system and a light source to obtain a uniform and sufficiently bright light source system. Taking a monolithic DMD system as an example, the light source needs to provide the illumination light of RGB in time sequence. Therefore, monochromatic light which is turned on in time sequence or a transmission wave band which is changed in time sequence through a light filter is needed in the light source system. In order to provide uniform illumination, a homogenizing device such as a square bar needs to be provided in the light source system to perform homogenizing treatment on the light.
In the projection system in the prior art, a plurality of homogenizing devices are generally required to respectively homogenize the light beams of different light paths such as excitation light, laser light and the like, for example, in the light path of laser excited fluorescent powder, the homogenizing devices are required to be added to shape the laser light beams with Gaussian distribution into geometrical light spots with uniform distribution, and the fluorescent powder is excited 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 optical design and the space volume of the system.
Therefore, it is necessary to provide a new light source system to solve the above-mentioned problems.
Disclosure of Invention
The invention mainly solves the technical problem of providing a light source system and projection equipment, which can save space, reduce cost, effectively improve projection effect, ensure uniform light 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 excitation light, a light splitting device arranged in front of the light source, a wavelength conversion device arranged on the light path of the excitation 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 is used for adjusting the direction of the light beam emitted from the light splitting device; the excitation light is homogenized by the homogenizing device and then is converted into laser light by the wavelength conversion device, the laser light enters the homogenizing device along the direction opposite to the incidence direction of the excitation light for homogenization, the laser light homogenized by the homogenizing device forms emergent light by the light splitting device and the light path regulating device, and the homogenizing device simultaneously homogenizes the excitation light and the laser light.
Preferably, the wavelength conversion device comprises at least two phosphor regions and a specular reflection region, the timing of which passes through the excitation light path.
Preferably, a coating film for allowing the excitation light to pass through is disposed in a central area of the light splitting device, a peripheral area of the light splitting device is a high-reflection lens, the excitation light is transmitted to the wavelength conversion device through the central area of the light splitting device, and the laser is reflected through the light splitting device.
Preferably, the homogenizing device is a fly-eye lens, and a micro-lens unit is arranged on the homogenizing device, and converts the surface distribution of the light spot on one side far away from the wavelength conversion device into the angular 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 laser light. .
Preferably, the light source further includes a relay system for adjusting an optical path, the relay system including a first relay lens disposed between the spectroscopic 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 homogenizing device and the optical path of the excitation light exiting the homogenizing device are parallel to each other and do not coincide with each other.
Preferably, the light source includes a first light source emitting a first excitation light and a second light source emitting a second excitation light, and the polarization states of the first excitation light and the second excitation light are different.
Preferably, the light-splitting device includes a first polarization region reflecting the second excitation light to transmit the first excitation light and a second polarization region reflecting the first excitation light to transmit 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 a second light, and a mirror for guiding the second light to the homogenizing device, the second light source generating a second light for enhancing a display color gamut by mixing the mirror with the laser to enhance the display color gamut of the light source system.
In order to solve the technical problems, the invention adopts another technical scheme that: there is provided a projection device comprising a light source system according to any of the preceding claims.
The beneficial effects of the invention are as follows: the present invention provides a light source system including a light source for emitting excitation light, a spectroscopic device provided in front of the light source, a wavelength conversion device provided on an optical path of the excitation light, a homogenizing device provided between the wavelength conversion device and the spectroscopic device, and an optical path adjusting device for adjusting an optical path, and a projection apparatus employing the light source system, different from the prior art; the light path adjusting device is arranged opposite to the light splitting device and is used for adjusting the direction of the light beam emitted from the light splitting device; the excitation light is homogenized by the homogenizing device and then is converted into laser light by the wavelength conversion device, the laser light enters the homogenizing device along the direction opposite to the incidence direction of the excitation light for homogenization, the laser light homogenized by the homogenizing device forms emergent light by the light splitting device and the light path regulating device, and the homogenizing device simultaneously homogenizes the excitation light and the laser light. The light source system of the invention realizes twice homogenization of the light path by the design of the light path, the superposition of the light path of the laser and the light path of the excitation light and the same homogenization device, and only one homogenization device is adopted, thereby saving space, reducing cost, effectively improving projection effect, ensuring uniform light and having good user experience.
Drawings
FIG. 1 is a schematic view of a first embodiment of a light source system of the present invention;
FIG. 2 is a schematic view 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 view of a spectroscopic device of the first embodiment of the light source system of the present invention;
FIG. 4 is a schematic diagram of the angular distribution of a first embodiment of the light source system of the present invention over a spatial light modulator;
FIG. 5 is a schematic diagram of a second embodiment of a light source system of the present invention;
fig. 6 is a schematic structural view of a spectroscopic device of a second embodiment of the light source system of the present invention;
FIG. 7 is a schematic diagram of the angular distribution of a second embodiment of the light source system of the present invention over a spatial light modulator;
FIG. 8 is a schematic view of a third embodiment of a light source system of the present invention;
fig. 9 is a schematic structural view 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 for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 to 4, the light source system provided by the present invention includes a light source 101, a homogenizing device 202, a wavelength conversion device 204, a light collecting system 105, a relay system 106, a beam splitter 207, and a light path adjusting device 107.
The light source 101 is a light source for emitting excitation light, the light splitting device 207 is disposed on a side of the light source along an optical path of the excitation light, specifically in this embodiment, the light source 101 is a blue laser for 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 this embodiment, or may be a transmitting device in alternative other embodiments. The excitation light emitted by the light source 101 is obliquely entered into the wavelength conversion device 204, that is, when the excitation light emitted by the light source 101 is incident on the light collecting system 105, the beam principal axis of the excitation light does not overlap with the optical axis of the light collecting system 105. Specifically, the excitation light emitted from the light source 101 enters the homogenizing device 202 under the guidance of the spectroscopic device 207 to be homogenized, and the homogenized excitation light enters the light collecting system 105 in a direction deviated from the main optical axis of the light collecting 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 2042 regions and a specular reflection region 2041 thereon, which are sequentially passed through the excitation light path. The excitation light emitted from the light source enters the homogenizing device 202 as incident light, is homogenized, and is converted into laser light by the wavelength conversion device 204. The combined light of the reflected light at the wavelength conversion device 204, which is subjected to the laser light and the excitation light, enters the homogenizing device 202 in the opposite irradiation direction to the incident light, and the homogenized laser light passes through the spectroscopic device 207 and the optical path adjusting device 107 to form the outgoing light.
As shown in fig. 2, in the present embodiment, the phosphor region 2042 of the wavelength conversion device 204 includes 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 excitation light is excited in a red fluorescent powder area to form red fluorescence, is excited in a green fluorescent area to form green fluorescence, and reflects the incident excitation light in a specular 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 before 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 excitation light and the light path of the emergent light are parallel and not overlapped. Specifically, the laser light having passed through the uniformizing device forms an outgoing light path parallel to the light path of the incident light by multiple reflections of the spectroscopic device 207 and the light path adjustment device 107. In particular, in the present embodiment, the optical path adjusting device 107 is a planar mirror. One side of the spectroscopic device 207 is for realizing transmission of excitation light, and the other side surface has a reflection function. Preferably, the angle between the mirror and the beam splitter 207 is a right angle, so that the light path of the outgoing light is formed parallel to the light path of the incoming light.
As shown in fig. 3, a center region of the spectroscopic device 207 is provided with a plating film 2071 that passes excitation light, and a peripheral region of the spectroscopic device 207 is a highly reflective lens 2072. In particular, in this embodiment, the coating in the central region is a blue-transmitting yellow-reflecting coating. 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 wavelength conversion device 204 through the spectroscopic device 207 on a side surface remote from the light source 101.
The homogenizing device 202 and the light collecting system 105 are arranged between the light source 101 and the wavelength converting means 204. The light collection system 105 comprises at least one convex lens, in particular in this embodiment, three convex lenses sharing a common optical axis. The excitation light emitted by the light source is homogenized by the homogenizing device 202, collected by the light collecting system 105, then enters the wavelength conversion device 204 at a small angle for conversion, and the resultant laser light and the reflected light of the excitation light at the wavelength conversion device 204 are subjected to back diffusion action by the light collecting system 105, homogenized again by the homogenizing device 202, and then transmitted to the receiving device 109 by the light splitting device 207 and the reflecting mirror 107 to form emergent light. The light path of the excitation light is overlapped with the light path of the laser, and the excitation light and the laser pass through the same homogenizing device 202 to realize light combination.
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 side surface far from the wavelength conversion device into an angular distribution at 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 laser.
The relay system 106 is configured to adjust an optical path, and in the present embodiment, the relay system 106 includes a first relay lens 106a provided between the spectroscopic device 207 and the optical path adjusting device 107, and a second relay lens 106b provided between the receiving device 109 and the optical path adjusting device 107.
Referring to fig. 4, the homogenized illumination light is totally reflected by the spectroscopic device 207, and then passes through the first relay lens 106a, the optical path adjusting device 107, and the second relay lens 106b to act on the surface of the spatial light modulator 108, thereby forming a uniform illumination spot. The microlens unit on the left surface of the homogenizing device 202 is superimposed and imaged on the surface of the spatial light modulator 108 according to the conversion relation of the etendue. The blue illumination light, red fluorescence and green fluorescence cover several cells of the left surface of the homogenizing device 202, thus forming a complete, uniform illumination spot at the spatial light modulator 108 after homogenization at the homogenizing device 202. While the spot face distribution on the right surface of the homogenizing device 202 will be converted into an angular distribution of the illumination light at the spatial light modulator 108, as shown in fig. 4, the red-green fluorescence 1081 occupies the whole of the spatial light modulator 108, and the blue illumination light 1082 occupies only the upper half area of 202, so that the angular distribution of the blue illumination light when it enters the spatial light modulator 108 is not a complete circle.
Example two
As shown in fig. 5 and 6, which are second embodiment of the present invention, which is an improvement of the first embodiment, the light source system includes a light source 101, a homogenizing device 202, a wavelength conversion device 204, a light collecting system 105, a relay system 106, a spectroscopic device 207, a mirror 107, a spatial light modulator 108, and a receiving device 109, which are substantially the same as the first embodiment. The difference is only 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, in which polarization states of the first excitation light and the second excitation light are different. The first light source 101a emits a blue laser beam in p-polarization state, and the second light source 101b emits a blue laser beam in s-polarization state. The spectroscopic device 207 includes a first polarization region (a region) that reflects the second excitation light to transmit the first excitation light and a second polarization region (B region) that reflects the first excitation light to transmit 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 homogenizing device 202 can fill the entire emission surface, so that the angular distribution of the blue illumination light 1082 is the same as the angular distribution of the red-green fluorescence 1081 when converted into the angular distribution at the spatial light modulator 108, and a good color uniformity can be obtained.
Example III
As shown in fig. 8, which is a third embodiment of the present invention, which is a modification of the foregoing embodiments, the light source system includes a light source 101, a homogenizing device 202, a wavelength conversion device 304, a light collecting system 105, a relay system 106, a spectroscopic device 307, a mirror 107, a spatial light modulator 108, and a receiving device 109, which are substantially the same as the former two embodiments. The difference is only that in the present embodiment, a quarter wave plate 302 is further provided between the homogenizing device 202 and the spectroscopic device 307, and the specular reflection area of the wavelength conversion device 304 is coated with a polarization-maintaining scattering material. Specifically, in this embodiment, a silver-coated material is used. Since the blue excitation light and the blue illumination light pass through the quarter wave plate 302 twice during the process of entering and exiting the homogenizing device 202, the polarization state of the blue excitation light and the blue illumination light is changed, and 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 to enter the spatial light modulator 108, so that better uniformity can be achieved.
Example IV
As shown in fig. 9, which is a fourth embodiment of the present invention, which is a modification of the foregoing embodiment, the light source system includes a light source 101, a homogenizing device 202, a wavelength conversion device 204, a light collecting system 105, a relay system 106, a spectroscopic device 207, a mirror 107, a spatial light modulator 108, and a receiving device 109, which are substantially the same as the foregoing embodiments. The difference is that in the present embodiment, the light source system further includes an illumination system for improving the display color gamut of the system, the illumination system including a second light source 201 for generating second light for improving the display color gamut, a condenser lens 205 for irradiating the second light to a side surface of the homogenizing device close to the wavelength converter, and a reflector 407. Wherein the second light source 201 is a red laser or a green laser, and the second light is mixed with the laser through the reflecting mirror to improve the display color gamut of the light source system. A laser relay mirror 203 is also arranged in front of the second light source 201. Mirror 407 is a small mirror with a blue-transmitting and yellow-reflecting coating property.
The blue excitation light emitted by the light source 101 is transmitted to the light splitting device 207, homogenized by the homogenizing device 202, acted on the surface of the wavelength conversion device 204 by the collecting mirror 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 receiving laser, and enters the homogenizing device 202 at a small angle by the light collecting system 105 and the collecting mirror 205, and homogenized by the homogenizing device 202, 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 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 205, and forms uniform illumination spots 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 beneficial effects of the invention are as follows: the present invention provides a light source system including a light source for emitting excitation light, a spectroscopic device provided in front of the light source, a wavelength conversion device provided on an optical path of the excitation light, a homogenizing device provided between the wavelength conversion device and the spectroscopic device, and an optical path adjusting device for adjusting an optical path, and a projection apparatus employing the light source system, different from the prior art; the light path adjusting device is arranged opposite to the light splitting device and is used for adjusting the direction of the light beam emitted from the light splitting device; the excitation light is homogenized by the homogenizing device and then is converted into laser light by the wavelength conversion device, the laser light enters the homogenizing device reversely along the incidence direction of the excitation light for homogenization, the laser light homogenized by the homogenizing device forms emergent light by the light splitting device and the light path regulating device, and the homogenizing device is used for homogenizing the excitation light and the laser light at the same time. The light source system of the invention realizes twice homogenization of the light path by the design of the light path, the superposition of the light path of the laser and the light path of the excitation light and the same homogenization device, and only one homogenization device is adopted, thereby saving space, reducing cost, effectively improving projection effect, ensuring uniform light and having good user experience.
The invention also provides projection equipment which comprises the light source system and has the characteristics of uniform projection, good effect and small occupied space.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. A light source system, comprising
A light source for emitting excitation light;
the light splitting device is arranged on an emergent light path of the light source, and excitation light emitted by the light source is incident to the lower half part of the light splitting device;
the homogenizing device is arranged on the emergent light path of the light splitting device, and the lower half part of the homogenizing device is used for homogenizing the excitation light passing through the light splitting device;
the wavelength conversion device is arranged on an emergent light path of the homogenizing device and comprises at least two fluorescent powder areas and a specular reflection area, wherein the fluorescent powder areas and the specular reflection area are sequentially arranged on the emergent light path of the homogenizing device, and the fluorescent powder areas and the specular reflection area are used for converting the excitation light subjected to the homogenization of the lower half part of the homogenizing device into laser light, reflecting the laser light and reflecting the excitation light incident to the specular reflection area; and
the light collecting system is arranged between the homogenizing device and the wavelength conversion device, and is used for collecting the excitation light emitted from the lower half part of the homogenizing device to irradiate the wavelength conversion device, and is used for enabling the reflection light of the excitation light at the wavelength conversion device to irradiate the upper half part of the homogenizing device, wherein the reflection light is homogenized by the upper half part of the homogenizing device and irradiates the upper half part of the light splitting device and is reflected by the upper half part of the light splitting device to form emergent light; the light collecting system is also used for adjusting the direction of the laser light to enable the laser light to enter the homogenizing device, and the laser light homogenized by the homogenizing device is reflected by the light splitting device and then forms the emergent light together with the reflected light of the excitation light at the wavelength conversion device.
2. The light source system according to claim 1, wherein centers of the light splitting device, the homogenizing device and the light collecting system are positioned on the same straight line, and a transmission direction of the excitation light emitted from the light source is parallel to but not coincident with the straight line.
3. The light source system according to claim 1, wherein the excitation light homogenized through the lower half of the homogenizing device and the excitation light reflected by the specular reflection area are parallel but not coincident in transmission direction and opposite in transmission direction.
4. The light source system according to claim 2, wherein a center region of the spectroscopic device is provided with a plating film that allows the excitation light to pass therethrough, a peripheral region of the spectroscopic device is a highly reflective lens, the excitation light is transmitted to the wavelength conversion device through the center region of the spectroscopic device, and the excitation light is reflected through the spectroscopic device.
5. A light source system according to claim 1, wherein the homogenizing device is a fly-eye lens on which a micro lens unit is arranged, the micro lens unit converting a face distribution of a side surface remote from the wavelength conversion device into an angular distribution at which light exits.
6. The light source system according to claim 1, wherein the excitation light emitted after being homogenized by the homogenizing device has the same angular distribution as the laser light.
7. The light source system of claim 1, wherein the light collection system comprises at least one convex lens.
8. The light source system of claim 1, wherein the light source is a first light source that emits first excitation light, the light source system further comprising a second light source that emits second excitation light, the first excitation light and the second excitation light having different polarization states.
9. The light source system of claim 8, wherein the lower half of the light splitting device is a first polarization region that reflects the second excitation light and transmits the first excitation light, and the upper half of the light splitting device is a second polarization region that reflects the first excitation light and transmits the second excitation light.
10. A projection device comprising a light source system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210112822.3A CN114563908B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210112822.3A CN114563908B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection device |
| CN201811103141.0A CN110928121B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection equipment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811103141.0A Division CN110928121B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114563908A CN114563908A (en) | 2022-05-31 |
| CN114563908B true CN114563908B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811103141.0A Active CN110928121B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection equipment |
| CN202210112822.3A Active CN114563908B (en) | 2018-09-20 | 2018-09-20 | Light source system and projection device |
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| CN111856859B (en) * | 2019-04-24 | 2023-03-10 | 深圳光峰科技股份有限公司 | Light source system and display device |
| CN114077135A (en) * | 2020-08-20 | 2022-02-22 | 深圳光峰科技股份有限公司 | Light recovery assembly and projection device |
| CN112631054B (en) * | 2020-11-23 | 2022-03-15 | 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 |
| CN115167067A (en) * | 2022-05-30 | 2022-10-11 | 歌尔股份有限公司 | Projection system and head-mounted device |
| CN115542649B (en) * | 2022-11-24 | 2023-04-07 | 滁州市大眼橙数字科技有限公司 | Projection lighting source device |
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| CN103574360A (en) * | 2013-10-15 | 2014-02-12 | 吴震 | Wavelength conversion device, reflection cup, light source, and manufacturing method of wavelength conversion device |
| WO2016148210A1 (en) * | 2015-03-18 | 2016-09-22 | コニカミノルタ株式会社 | Light source device and projection device |
| CN206671745U (en) * | 2017-03-14 | 2017-11-24 | 深圳市光峰光电技术有限公司 | Light supply apparatus and optical projection system |
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| JPS63269130A (en) * | 1987-04-28 | 1988-11-07 | Matsushita Electric Ind Co Ltd | Parallel light forming device |
| CN103256567B (en) * | 2011-12-07 | 2015-06-24 | 深圳市绎立锐光科技开发有限公司 | Light source |
| CN102722077A (en) * | 2012-05-24 | 2012-10-10 | 深圳市绎立锐光科技开发有限公司 | Light source system and projection system related to light source system |
| CN102854724B (en) * | 2012-08-30 | 2014-11-05 | 深圳市绎立锐光科技开发有限公司 | Adjustment method and device of projection light source |
| CN107703705A (en) * | 2016-08-09 | 2018-02-16 | 深圳市光峰光电技术有限公司 | Light-source system and projector equipment |
| CN206095585U (en) * | 2016-09-20 | 2017-04-12 | 深圳市光峰光电技术有限公司 | Light detecting system and light detection device |
| US10288992B2 (en) * | 2017-02-16 | 2019-05-14 | Delta Electronics, Inc. | Laser light source for projector and laser projection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574360A (en) * | 2013-10-15 | 2014-02-12 | 吴震 | Wavelength conversion device, reflection cup, light source, and manufacturing method of wavelength conversion device |
| WO2016148210A1 (en) * | 2015-03-18 | 2016-09-22 | コニカミノルタ株式会社 | Light source device and projection device |
| CN206671745U (en) * | 2017-03-14 | 2017-11-24 | 深圳市光峰光电技术有限公司 | Light supply apparatus and optical projection system |
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| CN110928121B (en) | 2022-03-25 |
| CN110928121A (en) | 2020-03-27 |
| WO2020057299A1 (en) | 2020-03-26 |
| CN114563908A (en) | 2022-05-31 |
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