CN114326274A - Light combination light source device and projection system - Google Patents
Light combination light source device and projection system Download PDFInfo
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- CN114326274A CN114326274A CN202011035808.5A CN202011035808A CN114326274A CN 114326274 A CN114326274 A CN 114326274A CN 202011035808 A CN202011035808 A CN 202011035808A CN 114326274 A CN114326274 A CN 114326274A
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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
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Abstract
The invention discloses a light combination light source device, wherein a basic light source module emits a first path of light formed by combining three primary color lights, an additional light source module is used for emitting any one primary color light of the three primary color lights, at least one additional light source module emits at least one primary color light, a light combination part obtains the first path of light and emergent light of the additional light source module, and the first path of light and the emergent light of the additional light source module are combined and output. The light source device adopts other light source modules to emit primary light to increase and converge into the light of the three primary lights so as to improve the brightness of the output light. Compared with the existing mode of increasing the brightness by exciting the luminescent material to generate the colored light, the light source device can effectively increase the brightness of output light, so that the light source device can effectively improve the brightness of output light, and can improve the brightness of a projection system when being applied to the projection system. The invention also discloses a projection system.
Description
Technical Field
The invention relates to the technical field of optical systems, in particular to a light combination light source device. The invention also relates to a projection system.
Background
The application of the projector is more and more widespread and common, for example, the projector is applied to meeting, teaching, entertainment and the like, and along with the application, the performance index requirement of the projector for users is higher and higher. In the current technology stage, researchers improve the brightness of the projection system by improving the brightness of the light source of the projection system.
The traditional bulb light source is gradually eliminated due to short service life and poor color effect, and a light source which combines light by adopting three primary colors is further provided, and the light source has great advantages in the aspects of color effect, service life, environmental protection and the like, wherein the light source is representatively provided with an LED (light emitting diode) and a laser light source. The light source needs to combine three primary colors, and the light utilization efficiency of the light source is directly determined by the quality of a light combination scheme.
In the prior art, a light combination scheme is adopted, wherein a red light source and a blue light source are arranged to respectively generate red and blue light, a path of blue light source is additionally arranged, the added blue light source is reflected by a dichroic mirror and then enters a light emitting chip to be coated with green fluorescent powder, the light emitting chip generates green light, and the fluorescent powder on the light emitting chip is excited by the blue light to generate the green light, so that more green lights are obtained. And then, the red, green and blue light is combined through a dichroic mirror, so that the aim of improving the brightness of the light is fulfilled. Although the light combination scheme excites the green fluorescent powder to improve the green brightness by adding one path of blue light, the improvement efficiency of the mode is not high, and the improvement efficiency of the green light is usually below 50% in practical use.
Disclosure of Invention
The invention aims to provide a light combination light source device which can effectively improve the brightness of output light and can improve the brightness of a projection system when being applied to the projection system. The invention also provides a projection system.
In order to achieve the purpose, the invention provides the following technical scheme:
a light-combining light source device includes a basic light source module, at least one additional light source module and a light-combining part,
the basic light source module is used for emitting a first path of light formed by converging three primary color lights;
the additional light source module is used for emitting any primary color light of the three primary color lights, and the at least one additional light source module emits at least one primary color light;
the light-combining part is used for acquiring the first path of light and the emergent light of the additional light source module, and combining and outputting the first path of light and the emergent light of the additional light source module.
Preferably, the light combining part is specifically configured to transmit the first path of light, reflect the emergent light of the additional light source module by total reflection, and combine the first path of light and the emergent light of the additional light source module.
Preferably, the light combining part includes a first optical medium body and a second optical medium body, the first light is incident to the optical interfaces of the first optical medium body and the second optical medium body through the first optical medium body and is transmitted, and the emergent light of the additional light source module is incident to the optical interfaces of the first optical medium body and the second optical medium body through the second optical medium body and is totally reflected.
Preferably, the light combining part includes an optical film, the optical film transmits the first path of light, so that the emergent light of the additional light source module is reflected, the first path of light and the emergent light of the additional light source module are combined, and the wavelength range of the emergent light of the additional light source module has a deviation with the wavelength range of the same primary color light combined into the first path of light.
Preferably, the at least one additional light source module comprises a first additional light source module emitting a first primary color light and a second additional light source module emitting a second primary color light;
the light combination part comprises a first area and a second area, emergent light of the first additional light source module and emergent light of the second additional light source module are respectively incident to the first area and the second area of the light combination part, the first area of the light combination part transmits the first path of light and reflects the emergent light of the first additional light source module, the second area of the light combination part transmits the first path of light and reflects the emergent light of the second additional light source module, and the first path of light, the emergent light of the first additional light source module and the emergent light of the second additional light source module are converged.
Preferably, the at least one additional light source module comprises a first additional light source module emitting a first primary color light and a second additional light source module emitting a second primary color light;
the light combination part comprises a first light combination part and a second light combination part, the first light combination part is used for transmitting the first path of light, reflecting the emergent light of the first additional light source module, and converging the first path of light with the emergent light of the first additional light source module, the second light combination part is used for transmitting the converged light of the first path of light and the emergent light of the first additional light source module, which is emitted by the first light combination part, and reflecting the emergent light of the second additional light source module, so that the first path of light, the emergent light of the first additional light source module and the emergent light of the second additional light source module are converged.
Preferably, the basic light source module comprises a first basic light source, a second basic light source and a third basic light source which are used for generating three basic light, and a light filtering device which is used for converging emergent light generated by the basic light sources to form a first path of light.
Preferably, the filter device is in an X shape, the space is divided into four regions, the first, second, and third primary colors enter the filter device from the first, second, and third regions, respectively, and the first path of light formed by the merging is emitted from the fourth region.
Preferably, the filtering device includes a first filtering element, a second filtering element and a third filtering element, the first filtering element and the second filtering element are respectively disposed at both sides of the third filtering element and arranged in an "X" shape;
the first light filtering element is used for transmitting the first primary color light and the second primary color light and reflecting the third primary color light, the second light filtering element is used for transmitting the second primary color light and reflecting the third primary color light, and the third light filtering element is used for reflecting the first primary color light and transmitting the second primary color light and the third primary color light.
Preferably, the light filtering device includes a first surface, a second surface, a third surface and a fourth surface facing different directions, the first primary color light, the second primary color light and the third primary color light enter the light filtering device from the first surface, the second surface and the third surface, respectively, and the first path of light formed by the confluence is emitted from the fourth surface.
Preferably, the filtering device comprises four triangular right-angle prisms, right-angle surfaces of the four prisms are sequentially attached to each other, and a first surface, a second surface, a third surface and a fourth surface are respectively formed by inclined surfaces of the four prisms.
Preferably, the basic light source module includes a first optical element and a second optical element, the first optical element is configured to transmit the first primary light and reflect the second primary light to combine the first primary light and the second primary light, and the second optical element is configured to reflect the combined light of the first primary light and the second primary light emitted by the first optical element and transmit the third primary light to combine the first primary light, the second primary light and the third primary light for output.
A projection system comprises the light-combining light source device.
According to the above technical solution, the light combination light source device provided by the present invention includes a basic light source module, at least one additional light source module and a light combination part, wherein the basic light source module emits a first path of light formed by combining three primary color lights, the additional light source module is configured to emit any one of the three primary color lights, the at least one additional light source module can emit at least one of the primary color lights, and the light combination part obtains the first path of light and the emergent light of the additional light source module, and combines and outputs the first path of light and the emergent light of the additional light source module.
The light source device of the combined light adopts the other light source module to emit the primary light to increase and combine into the combined light of the three primary lights so as to improve the brightness of the output light. Compared with the existing mode of increasing the brightness by exciting the luminescent material to generate the colored light, the light source device can effectively increase the brightness of output light, so that the light source device can effectively improve the brightness of output light, and can improve the brightness of a projection system when being applied to the projection system.
The projection system provided by the invention can achieve the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a light combining light source device according to an embodiment of the present invention;
fig. 2 is a schematic view of a light combining light source device according to another embodiment of the present invention;
fig. 3 is a schematic view of a light combining light source device according to another embodiment of the present invention;
fig. 4 is a schematic view of a light combining light source device according to another embodiment of the present invention;
fig. 5 is a schematic view of a light combining light source device according to another embodiment of the present invention;
fig. 6 is a schematic view of a basic light source module according to an embodiment of the invention;
fig. 7 is a schematic view of a basic light source module according to another embodiment of the invention;
fig. 8 is a schematic view of a basic light source module according to another embodiment of the invention;
fig. 9 is a schematic view of a light source module according to an embodiment of the invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a light source device for combining light, which comprises a basic light source module, at least one additional light source module and a light combining part, wherein the basic light source module is used for emitting first path light formed by combining three primary color light, the additional light source module is used for emitting any primary color light of the three primary color light, and the at least one additional light source module emits at least one primary color light;
the light-combining part is used for acquiring the first path of light and the emergent light of the additional light source module, and combining and outputting the first path of light and the emergent light of the additional light source module.
The basic light source module converges the three primary color lights and outputs a first path of light formed by converging the three primary color lights. The additional light source module emits single primary color light, and the at least one additional light source module emits at least one primary color light. The tricolor light is three kinds of light which can be mixed to form light of any other color.
The light source device of the embodiment adopts another light source module to emit primary light to increase and converge into the combined light of the three primary lights so as to improve the brightness of the output light. Compared with the existing mode of increasing the brightness by exciting the luminescent material to generate the colored light, the light source device can effectively increase the brightness of output light, so that the light source device can effectively improve the brightness of output light, and can improve the brightness of a projection system when being applied to the projection system.
The light source device will be described in detail with reference to the following embodiments and accompanying drawings. An embodiment of the invention provides a light combining light source device, which includes a basic light source module, at least one additional light source module, and a light combining part, wherein the basic light source module is used for emitting a first path of light formed by combining three primary colors of light. The additional light source module is used for emitting any primary color light of the three primary color lights, and when the light source combining device comprises a plurality of additional light source modules, the plurality of additional light source modules can emit the same primary color light, or the plurality of additional light source modules can emit two primary color lights or can emit three primary color lights.
The light-combining part is used for transmitting the first path of light, totally reflecting the emergent light of the additional light source module and combining the first path of light with the emergent light of the additional light source module. Referring to fig. 1, fig. 1 is a schematic view of a light combining light source device provided in this embodiment, wherein the light combining light source device includes an additional light source module for illustration. As shown in fig. 1, the light combining light source device includes a base light source module 100, an additional light source module 101 and a light combining part 102, wherein the base light source module 100 emits a first path of light, the first path of light is a combined light of three primary colors, and the additional light source module 101 emits a primary color. The first path of light enters the light-combining part 102 and is transmitted, the emergent light of the additional light source module 101 enters the light-combining part 102 to be totally reflected, and the light is reflected and then is converged with the transmitted first path of light. The two-path light convergence can be understood as that at least a part of the two-path light is overlapped and the two-path light propagates in the same direction. In fig. 1, in order to show the propagation path of the first light and the light emitted from the additional light source module 101, the arrows for indicating the first light and the light emitted from the additional light source module 101 in the light emitted from the light combining part 102 do not overlap, but at least a part of the first light transmitted and the reflected primary light reflected in the light emitted from the light combining part 102 in the actual light path overlaps,
the light source device of the light combination of the embodiment utilizes the total reflection principle to combine the primary color light emitted by the additional light source module with the first path of light, so that the same optical element can transmit and reflect the light with the same color, the total reflection has small loss of light energy, the light utilization rate of the light source device of the light combination can be improved, and the brightness of the output light can be effectively improved.
In addition, the light source device of the present embodiment combines the primary light emitted from the additional light source module with the first light by using the total reflection principle, wherein the wavelength range of the light emitted from the additional light source module and the wavelength range of the same primary light combined into the first light may have no deviation or have deviation.
Optionally, referring to fig. 2, fig. 2 is a schematic view of a light combining light source device according to another embodiment, the light combining part 102 may include a first optical medium 103 and a second optical medium 104, a first path of light is incident to an optical interface of the first optical medium 103 and is transmitted through the optical interface, an emergent light of the additional light source module 101 is incident to the optical interface of the second optical medium 104 and is totally reflected, so that the first path of light is transmitted through the optical interface of the first optical medium 103 and the optical interface of the second optical medium 104, and another path of primary light emitted by the additional light source module 101 is reflected through the optical interfaces of the first optical medium 103 and the second optical medium 104, so as to realize the two paths of light combining. Alternatively, the first optical medium body 103 may be, but is not limited to, a prism, and the second optical medium body 104 may be, but is not limited to, a prism.
The light is required to enter the medium with lower refractive index from the medium with higher refractive index when the light is totally reflected, and the incident angle is larger than the critical angle, so that in practical application, the refractive indexes of the first optical medium body and the second optical medium body can be selected according to the wave band range of emergent light of each light source module, and the light path can be correspondingly arranged. It should be noted that the optical structure adopted by the light combining portion shown in fig. 2 is only a specific example, and in practical applications, other optical structures based on the same principle may be adopted by the light combining portion, and all of them are within the protection scope of the present invention.
In another embodiment of the present invention, a light combining device includes a basic light source module, at least one additional light source module, and a light combining part, wherein the basic light source module is used for emitting a first path of light formed by combining three primary lights, and the additional light source module is used for emitting any one of the three primary lights. The light combining part comprises an optical film, the optical film enables the first path of light to be transmitted, the emergent light of the additional light source module is reflected, the first path of light and the emergent light of the additional light source module are combined, wherein the wave band range of the emergent light of the additional light source module has deviation with the wave band range of the same basic color light combined into the first path of light, namely the wave band range of the basic color light emitted by the additional light source module has deviation with the wave band range of the same basic color light combined into the first path of light, so that the light combining part enables the basic color light emitted by the additional light source module to be reflected through a corresponding mode, and the same basic color light in the first path of light is transmitted.
Optionally, referring to fig. 3, fig. 3 is a schematic view of a light combining light source device provided in this embodiment, wherein the light combining light source device includes an additional light source module for illustration. As can be seen from the figure, the light combination light source device includes a base light source module 200, an additional light source module 201 and a light combination part 202, wherein the base light source module 200 emits a first path of light, the first path of light is a combination light of three primary colors, and the additional light source module 201 emits a primary color. The first path of light is incident on the optical film of the light-combining part 202 and is transmitted, the light emitted from the additional light source module 201 is incident on the optical film of the light-combining part 202 and is reflected, and the transmitted light and the reflected light are combined.
Optionally, the light combining part 202 may adopt a filter element, and if the wavelength range of the light emitted from the additional light source module is completely the same as the wavelength range of the same basic color light combined into the first path of light, the same filter element cannot transmit and reflect the light in the same wavelength range, so that the wavelength range of the light emitted from the additional light source module is set to have a deviation with the wavelength range of the same basic color light combined into the first path of light, so that the light in two different wavelength ranges belonging to the same primary color can be transmitted and reflected respectively through the same filter element.
Preferably, the light of the primary color emitted from the light source module in this embodiment is narrow-band light, so as to ensure that the wavelength bands of two different wavelength band ranges of light belonging to the same primary color overlap less, which is convenient for realizing the transmission and reflection of the light energy of the two different wavelength band ranges through the same optical element. Optionally, the light source module may adopt but is not limited to a laser light source, and the laser has the advantage of narrow band. Alternatively, the filter element may be coated with an optical film to achieve light transmission and reflection properties.
The light source device of the embodiment adopts another light source module to emit primary light to increase and converge into the light combination of the three primary lights so as to improve the brightness of the output light, wherein the light in two different wave band ranges belonging to the same primary color is respectively transmitted and reflected through the same light combination part to realize light combination, so that the light utilization efficiency of the light source device of the light combination can be improved, and the brightness of the output light can be effectively improved.
The light combining method that can be used in the light combining light source device is mainly described above, and embodiments of the light combining light source device are further described below with reference to the drawings. In another embodiment of the present invention, a light combining device includes a base light source module, at least one additional light source module and a light combining part, wherein the at least one additional light source module includes a first additional light source module emitting a first base light and a second additional light source module emitting a second base light.
The light combination part comprises a first area and a second area, emergent light of the first additional light source module and emergent light of the second additional light source module are respectively incident to the first area and the second area of the light combination part, the first area of the light combination part transmits the first path of light and reflects the emergent light of the first additional light source module, the second area of the light combination part transmits the first path of light and reflects the emergent light of the second additional light source module, and the first path of light, the emergent light of the first additional light source module and the emergent light of the second additional light source module are converged.
Referring to fig. 4, fig. 4 is a schematic view of a light combining light source device provided in the present embodiment, wherein the light combining light source device includes a base light source module 300, a first additional light source module 301, a second additional light source module 302, and a light combining portion 303. The basic light source module 300 emits a first path of light, and the first path of light is a combined light of three basic colors. The first additional light source module 301 emits a first primary color light, and the second additional light source module 302 emits a second primary color light.
The light-combining part 303 includes a first area 304 and a second area 305, the first path of light emitted from the base light source module 300 is incident on the first area 304 and the second area 305 is transmitted, the first primary color light emitted from the first additional light source module 301 is incident on the light-combining part first area 304, and the first area 304 reflects the first primary color light; the second primary color light emitted from the second additional light source module 302 enters the second area 305 of the light-combining portion, and the second area 305 reflects the second primary color light. Therefore, the light is combined by the first light path of the light-combining part 303, the light emitted from the first additional light source module 301, and the light emitted from the second additional light source module 302. The arrows shown in the figure only indicate the propagation paths of the respective lights.
Optionally, the first region 304 or the second region 305 of the light combining part 303 may reflect the light emitted from the additional light source module through total reflection. In specific implementation, the optical structure of the light-combining portion and the refractive index of the optical medium body adopted by the light-combining portion can be correspondingly set according to the overall optical path layout of the optical system, the arrangement of each light source module.
Alternatively, the first region 304 or the second region 305 of the light combining part 303 may not reflect the light emitted from the additional light source module by total reflection, but the wavelength band range of the primary light emitted from the additional light source module deviates from the wavelength band range of the same primary light combined into the first path of light, specifically, the wavelength band range of the first primary light emitted from the first additional light source module 301 deviates from the wavelength band range of the same primary light combined into the first path of light, and the wavelength band range of the second primary light emitted from the second additional light source module 302 deviates from the wavelength band range of the same primary light combined into the first path of light.
In practical application, the at least two other primary color lights are added and merged into the three-primary color merged light by the light merging method of the embodiment, preferably, the emergent light beam of the additional light source module is required to be thin, and the light source module has a small volume, so that the light merging effect can be achieved by merging the lights of all paths.
Therefore, the light source device of the present embodiment can add at least two other primary lights, add and merge into the combined light of the three primary lights, so as to improve the brightness of the output light. Compared with the existing mode of increasing the brightness by exciting the luminescent material to generate the colored light, the light source device can effectively increase the brightness of output light, so that the light source device can effectively improve the brightness of output light, and can improve the brightness of a projection system when being applied to the projection system.
In another embodiment of the present invention, a light combining device includes a base light source module, at least one additional light source module and a light combining part, wherein the at least one additional light source module includes a first additional light source module emitting a first base light and a second additional light source module emitting a second base light.
The light combination part comprises a first light combination part and a second light combination part, the first light combination part is used for transmitting the first path of light, reflecting the emergent light of the first additional light source module, converging the first path of light with the emergent light of the first additional light source module, and the second light combination part is used for transmitting the converged light of the first path of light and the emergent light of the first additional light source module, emitted light of the second additional light source module, and converging the first path of light, the emergent light of the first additional light source module and the emergent light of the second additional light source module.
Referring to fig. 5, fig. 5 is a schematic view of a light combining light source device provided in this embodiment, and arrows shown in the diagram only indicate propagation paths of light of each path respectively. The light combination light source device includes a base light source module 400, a first additional light source module 401, a second additional light source module 402, a first light combination portion 403, and a second light combination portion 404. The basic light source module 400 emits a first path of light, the first path of light is a combined light of three primary colors, the first additional light source module 401 emits a first primary color, and the second additional light source module 402 emits a second primary color.
The first light-combining part 403 transmits the first path of light, reflects the first primary color light emitted by the first additional light source module 401, and combines the first path of light with the light emitted by the first additional light source module; the second light-combining portion 404 transmits the light emitted from the first light-combining portion 403, i.e., the combined light of the first path light and the light emitted from the first additional light source module 401, and reflects the second primary color light emitted from the second additional light source module 402, thereby combining the first path light, the light emitted from the first additional light source module 401, and the light emitted from the second additional light source module 402.
Optionally, the first light-combining part 401 or the second light-combining part 402 may reflect the emergent light of the additional light source module through total reflection, and in specific implementation, the optical structure of each light-combining part and the refractive index of the optical medium body adopted by the light-combining part may be correspondingly set according to the waveband range of the emergent light of the light source module and the overall optical path layout of the optical system.
Alternatively, the first light combining part 401 or the second light combining part 402 may not reflect the emitted light of the additional light source module by total reflection, but the wavelength range of the primary light emitted by the additional light source module and the wavelength range of the same primary light merged into the first path of light have a deviation, specifically, the wavelength range of the first primary light emitted by the first additional light source module 401 and the wavelength range of the same primary light merged into the first path of light have a deviation, and the wavelength range of the second primary light emitted by the second additional light source module 402 and the wavelength range of the same primary light merged into the first path of light have a deviation.
Therefore, the light source device of the present embodiment can add at least two other primary lights, add and merge into the combined light of the three primary lights, so as to improve the brightness of the output light. Compared with the existing mode of increasing the brightness by exciting the luminescent material to generate the colored light, the light source device can effectively increase the brightness of output light, so that the light source device can effectively improve the brightness of output light, and can improve the brightness of a projection system when being applied to the projection system.
Further in each of the above embodiments, the basic light source module may include a first basic light source for generating three basic lights, a second basic light source and a third basic light source, and a filter device for combining emergent lights generated by the basic light sources to form a first path of light. Optionally, the filter device may have an X shape, the space is divided into four regions, the first primary color light, the second primary color light, and the third primary color light are incident to the filter device from the first region, the second region, and the third region, respectively, and the first path of light formed by merging is emitted from the fourth region.
For example, referring to fig. 6, fig. 6 is a schematic diagram of a basic light source module according to an embodiment, and it can be seen from the diagram that the filter device includes a first filter element 500, a second filter element 501 and a third filter element 502, where the first filter element 500 and the second filter element 501 are respectively disposed on two sides of the third filter element 503 and are arranged in an "X" shape. The first primary color light is incident to the third filter element 502 and the first filter element 500 from a first region, which is a space between the third filter element 502 and the first filter element 500, the third primary color light is incident to the second filter element 501 and the third filter element 502 from a third region, which is a space between the third filter element 502 and the second filter element 501, the second primary color light is incident to the third filter element 502 and the second filter element 501 from a second region, which is another space between the third filter element 502 and the second filter element 501, and the first primary color light formed by the combination is emitted from a fourth region, which is another space between the first filter element 500 and the third filter element 502. The first filter element 500 is configured to transmit the first primary color light and the second primary color light and reflect the third primary color light, the second filter element 501 is configured to transmit the second primary color light and reflect the third primary color light, and the third filter element 502 is configured to reflect the first primary color light and transmit the second primary color light and the third primary color light.
Preferably, in this embodiment, the first filter element 500 and the third filter element 502 are perpendicular to each other, the second filter element 501 and the third filter element 502 are perpendicular to each other, and the first primary light, the second primary light, and the third primary light are incident at an angle of 45 degrees, respectively.
Optionally, the light filtering device may further include a first surface, a second surface, a third surface, and a fourth surface facing different directions, where the first primary color light, the second primary color light, and the third primary color light enter the light filtering device from the first surface, the second surface, and the third surface, respectively, and the first path of light formed by the merging is emitted from the fourth surface. For example, referring to fig. 7, fig. 7 is a schematic diagram of a basic light source module according to yet another embodiment, and it can be seen from the figure that the filter device includes four triangular right-angle prisms, which are a prism 600, a prism 601, a prism 602, and a prism 603 in sequence, right-angle surfaces of the four prisms are sequentially attached, and inclined surfaces of the four prisms form a first surface, a second surface, a third surface, and a fourth surface, respectively. The four right-angle surfaces can be coated with films respectively, so that the reflection and transmission characteristics of each primary color light are realized. Preferably, the first primary color light, the second primary color light, and the third primary color light are incident at 45 degrees, respectively.
Optionally, referring to fig. 8, fig. 8 is a schematic diagram of a basic light source module according to another embodiment, and as can be seen from the figure, the basic light source module includes a first optical element 700 and a second optical element 701, where the first optical element 700 is configured to transmit the first primary light and reflect the second primary light to combine the first primary light and the second primary light, and the second optical element 701 is configured to reflect the combined light of the first primary light and the second primary light emitted from the first optical element 700 and transmit the third primary light to combine and output the first primary light, the second primary light, and the third primary light. Alternatively, the first optical element 700 or the second optical element 701 may employ a filter element.
In the above embodiments, the light source module for emitting the primary color light may include a light source for emitting the primary color light and a light shaping portion for shaping the emergent light of the light source to meet the application requirement. Referring to fig. 9, fig. 9 is a schematic view of a light source module according to this embodiment, the light shaping portion may adopt a plano-convex lens 801 or a convex lens 802 to collect the large-angle divergent light emitted by the light source 800 into small-angle light (for example, approximately parallel light), which is beneficial for the light to penetrate through the subsequent light-converging portion, and the efficiency is higher as the angle of the light irradiated onto the light-converging portion is smaller.
Correspondingly, the embodiment of the invention also provides a projection system which comprises the light combination light source device.
In the projection system of the embodiment, the adopted light source device for combining light adopts another light source module to emit the primary light to increase and combine into the combined light of the three primary lights so as to improve the brightness of the output light. Compared with the existing mode of increasing the brightness by exciting the luminescent material to generate the colored light, the method can more effectively increase the brightness of the output light, so that the adopted light combination light source device can effectively improve the brightness of the output light, and the projection system can improve the brightness of the projection system.
The light combining light source device and the projection system provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (13)
1. A light-combined light source device is characterized in that it comprises a basic light source module, at least one additional light source module and a light-combined part,
the basic light source module is used for emitting a first path of light formed by converging three primary color lights;
the additional light source module is used for emitting any primary color light of the three primary color lights, and the at least one additional light source module emits at least one primary color light;
the light-combining part is used for acquiring the first path of light and the emergent light of the additional light source module, and combining and outputting the first path of light and the emergent light of the additional light source module.
2. The light combining light source device according to claim 1, wherein the light combining part is specifically configured to transmit the first path of light, reflect the emergent light of the additional light source module by total reflection, and combine the first path of light with the emergent light of the additional light source module.
3. The light source device of claim 2, wherein the light combining part includes a first optical medium and a second optical medium, the first light is incident on the optical interfaces of the first optical medium and is transmitted through the first optical medium, and the outgoing light from the additional light source module is incident on the optical interfaces of the second optical medium and is totally reflected.
4. The combined light source device according to claim 1, wherein the combined light portion includes an optical film that transmits the first path of light, reflects the outgoing light from the additional light source module, and combines the first path of light with the outgoing light from the additional light source module, and a wavelength band range of the outgoing light from the additional light source module is deviated from a wavelength band range of the same primary color light combined into the first path of light.
5. The light combining light source device according to claim 1, wherein the at least one additional light source module comprises a first additional light source module emitting a first primary color light and a second additional light source module emitting a second primary color light;
the light combination part comprises a first area and a second area, emergent light of the first additional light source module and emergent light of the second additional light source module are respectively incident to the first area and the second area of the light combination part, the first area of the light combination part transmits the first path of light and reflects the emergent light of the first additional light source module, the second area of the light combination part transmits the first path of light and reflects the emergent light of the second additional light source module, and the first path of light, the emergent light of the first additional light source module and the emergent light of the second additional light source module are converged.
6. The light combining light source device according to claim 1, wherein the at least one additional light source module comprises a first additional light source module emitting a first primary color light and a second additional light source module emitting a second primary color light;
the light combination part comprises a first light combination part and a second light combination part, the first light combination part is used for transmitting the first path of light, reflecting the emergent light of the first additional light source module, and converging the first path of light with the emergent light of the first additional light source module, the second light combination part is used for transmitting the converged light of the first path of light and the emergent light of the first additional light source module, which is emitted by the first light combination part, and reflecting the emergent light of the second additional light source module, so that the first path of light, the emergent light of the first additional light source module and the emergent light of the second additional light source module are converged.
7. A light-combining light source device according to any one of claims 1-6, wherein the basic light source module comprises a first basic light source, a second basic light source and a third basic light source for generating three basic lights, and a light-filtering device for combining the emergent lights generated by the basic light sources to form a first path of light.
8. The light source device of claim 7, wherein the filter is "X" shaped to divide the space into four regions, the first, second and third primary lights are incident on the filter from the first, second and third regions, respectively, and the first light formed by the combination is emitted from the fourth region.
9. The light combining light source device according to claim 8, wherein the filter device comprises a first filter element, a second filter element and a third filter element, the first filter element and the second filter element are respectively disposed on two sides of the third filter element and arranged in an "X" shape;
the first light filtering element is used for transmitting the first primary color light and the second primary color light and reflecting the third primary color light, the second light filtering element is used for transmitting the second primary color light and reflecting the third primary color light, and the third light filtering element is used for reflecting the first primary color light and transmitting the second primary color light and the third primary color light.
10. A combined light source device according to claim 7, wherein said filter device comprises a first surface, a second surface, a third surface and a fourth surface facing different directions, respectively, the first primary light, the second primary light and the third primary light enter said filter device from the first surface, the second surface and the third surface, respectively, and the first path of light formed by the combination is emitted from the fourth surface.
11. The light combining light source device according to claim 10, wherein the filter device comprises four triangular right-angle prisms, right-angle surfaces of the four prisms are sequentially attached to each other, and inclined surfaces of the four prisms respectively form a first surface, a second surface, a third surface and a fourth surface.
12. A light-combining light source device according to any one of claims 1 to 6, wherein the basic light source module comprises a first optical element and a second optical element, the first optical element is used for transmitting the first primary light and reflecting the second primary light to combine the first primary light and the second primary light, and the second optical element is used for reflecting the combined light of the first primary light and the second primary light emitted by the first optical element and transmitting the third primary light to combine and output the first primary light, the second primary light and the third primary light.
13. A projection system comprising the light combining light source device of any one of claims 1-12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011035808.5A CN114326274A (en) | 2020-09-27 | 2020-09-27 | Light combination light source device and projection system |
| PCT/CN2021/099037 WO2022062479A1 (en) | 2020-09-27 | 2021-06-09 | Combined light source device and projection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011035808.5A CN114326274A (en) | 2020-09-27 | 2020-09-27 | Light combination light source device and projection system |
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| CN114326274A true CN114326274A (en) | 2022-04-12 |
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| CN202011035808.5A Pending CN114326274A (en) | 2020-09-27 | 2020-09-27 | Light combination light source device and projection system |
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| CN (1) | CN114326274A (en) |
| WO (1) | WO2022062479A1 (en) |
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| CN102722073B (en) * | 2011-12-18 | 2014-12-31 | 深圳市光峰光电技术有限公司 | Light source system and projector |
| CN204595412U (en) * | 2014-12-08 | 2015-08-26 | 深圳市光峰光电技术有限公司 | Light-emitting device and optical projection system |
| CN206224129U (en) * | 2016-12-07 | 2017-06-06 | 上海激亮光电科技有限公司 | A kind of two-color laser light sources project machine |
| CN108279548B (en) * | 2017-01-06 | 2021-02-02 | 深圳光峰科技股份有限公司 | Projection system |
| CN109765745B (en) * | 2017-11-09 | 2021-08-17 | 深圳光峰科技股份有限公司 | Light source device and projection system |
| JP7131120B2 (en) * | 2018-06-22 | 2022-09-06 | セイコーエプソン株式会社 | Lighting system and projector |
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- 2020-09-27 CN CN202011035808.5A patent/CN114326274A/en active Pending
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- 2021-06-09 WO PCT/CN2021/099037 patent/WO2022062479A1/en active Application Filing
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| US20060044515A1 (en) * | 2004-08-27 | 2006-03-02 | Tetsuji Suzuki | Projection type display apparatus |
| CN201134006Y (en) * | 2007-11-08 | 2008-10-15 | 北京中视中科光电技术有限公司 | Light source for projection system and projection display device |
| CN103189794A (en) * | 2010-10-19 | 2013-07-03 | Nec显示器解决方案株式会社 | Lighting device and projection type display device using same |
| CN203880619U (en) * | 2014-04-30 | 2014-10-15 | 深圳市绎立锐光科技开发有限公司 | Device for increasing color rendering index of LED light source |
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| WO2022062479A1 (en) | 2022-03-31 |
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Application publication date: 20220412 |