CN217639916U - Laser light source device and projection system - Google Patents
Laser light source device and projection system Download PDFInfo
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- CN217639916U CN217639916U CN202220739287.XU CN202220739287U CN217639916U CN 217639916 U CN217639916 U CN 217639916U CN 202220739287 U CN202220739287 U CN 202220739287U CN 217639916 U CN217639916 U CN 217639916U
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Abstract
The utility model provides a laser light source device and a projection system, wherein the laser light source device comprises a first light source, a light shaping system, a light splitting element, a convergent lens, a wavelength conversion device, a second light source and an optical mechanical system; the light splitting element comprises a first light splitting element and a second light splitting element; exciting light emitted by the first light source is incident to the first light splitting element, and is incident to the wavelength conversion device after reflection to generate stimulated light; the excited light is collimated by a converging lens and then enters an optical-mechanical system; the supplementary light emitted by the second light source is incident to the second light splitting element and then is incident to the optical-mechanical system after reflection. The utility model discloses a setting is suitable for the exciting light to first light source transmission respectively to and the spectral element that the supplementary light angle of second light source transmission carried out the regulation, thereby make two spectral elements can adjust the light angle that two light sources sent respectively, make the light homoenergetic that two light sources sent incide to the ray apparatus system with best angle.
Description
Technical Field
The utility model relates to the field of optical technology, particularly, relate to a laser light source device and projection system.
Background
A conventional laser light source device, as shown in fig. 1, generally includes a first light source 1, a light shaping system 2, a light splitting element 3, a converging lens 4, a wavelength conversion device 5, a second light source 6, and an optical-mechanical system 7 disposed in a light path; wherein the first light source 1 is typically a blue laser light source, and the second light source 6 is typically a red LED or LD; the light shaping system 2 generally comprises a beam-reducing lens and a light homogenizing element; the first light source 1 emits excitation light 101, the excitation light 101 penetrates through the light shaping system 2, then enters the light splitting element 3, is further reflected to the converging lens 4 by the light splitting element 3, and enters the wavelength conversion device 5 after being converged by the converging lens 4, and an excitation light spot is formed on the wavelength conversion device 5; the wavelength conversion device 5 is a rotating body, and wavelength conversion materials and scattering materials are arranged on the rotating body; the light splitting element 3 is a regional coated element, and a dielectric film for reflecting the excitation light 101 and the complementary light 3 and transmitting the excited light 102 is coated in the middle, and a dielectric film for transmitting the excitation light 101, the excited light 102 and reflecting the complementary light 103 is coated in other regions. After the excitation light 101 is incident on the wavelength conversion device 5, part of the excitation light 101 excites the wavelength conversion material to generate excited light 102, and part of the excitation light 101 is scattered by the scattering material to generate scattered excitation light 101; the excited light 102 and the scattered excited light 101 are reflected, collimated by the converging lens 4, incident to the light splitting element 3, and incident to the optical-mechanical system after passing through the light splitting element 3 by transmission; the complementary light 103 emitted from the second light source 6 enters the light splitting element 3, is reflected by the light splitting element 3, is combined, and enters the optical system 7.
In the light path of the laser light source device, the excitation light 101 emitted by the first light source 1 and the complementary light 103 emitted by the second light source 6 are reflected by the light splitting element 3, and the position and the angle of the light splitting element 3 affect the angles of the excitation light 101 and the complementary light 103, so that the angles of the excitation light 101 and the complementary light 103 cannot be independently adjusted respectively, that is, the angles of the light rays emitted by the two light sources cannot be independently adjusted respectively, and at least one of the light rays cannot be efficiently incident into the optical-mechanical system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be that current laser source device can't independently adjust the light angle that two light sources sent respectively.
In order to solve the above problems, the present invention provides a laser light source device, which includes a first light source, a light shaping system, a light splitting element, a converging lens, a wavelength conversion device, a second light source and an optical system, which are disposed in a light path; wherein the content of the first and second substances,
the light splitting element comprises a first light splitting element and a second light splitting element;
exciting light emitted by the first light source enters the first light splitting element after passing through the light shaping system, passes through the converging lens after reflection, and enters the wavelength conversion device to generate stimulated light;
after being collimated by the converging lens, the stimulated luminescence passes through the first light splitting element and the second light splitting element and is incident to the optical mechanical system;
the supplementary light emitted by the second light source is incident to the second light splitting element and then is incident to the optical-mechanical system after reflection;
the wavelength conversion device comprises a wavelength conversion region and an exciting light scattering region; the wavelength conversion region and the exciting light scattering region are enclosed to form a circular ring structure.
Optionally, the first light splitting element and the second light splitting element are adjustable in position.
Optionally, the area of the first light splitting element is adapted to the beam cross-sectional area of the excitation light, and the beam cross-sectional area of the excited light is more than 4 times the beam cross-sectional area of the excitation light.
Optionally, the first light splitting element is located at a central position of the stimulated light beam.
Optionally, the first light splitting element is located outside the stimulated light beam.
Optionally, the first light splitting element is a curved surface structure.
Optionally, when the second light source is an LED light source, the area of the second light splitting element is larger than the beam cross-sectional area of the excited light and the beam cross-sectional area of the supplement light.
Optionally, when the second light source is an LD light source, the area of the second light splitting element is smaller than the beam cross-sectional area of the excited light, and is adapted to the beam cross-sectional area of the supplement light.
Optionally, the second light source is a red light source.
Another object of the present invention is to provide a projection system, which includes the laser light source device as described above.
Compared with the prior art, the utility model provides a laser light source device has following advantage:
the utility model provides a laser light source device is suitable for the exciting light to the first light source transmission respectively through setting up, and the beam splitting component that supplementary light angle of second light source transmission was adjusted to make two beam splitting components can adjust the light angle that two light sources sent respectively, make the light that two light sources sent all can incide to the ray apparatus system with the best angle, improve the efficiency of ray apparatus system, realize the optimization of light path; the adoption of the two light splitting elements can avoid regional coating, reduce the production cost and facilitate the assembly.
Drawings
FIG. 1 is a schematic diagram of a conventional laser light source device;
FIG. 2 is a schematic view of a laser source device according to the present invention;
fig. 3 is a schematic view of a wavelength conversion device according to the present invention;
fig. 4 is a schematic diagram of a laser light source device according to the present invention;
fig. 5 is a schematic structural diagram of a laser light source device according to the present invention;
fig. 6 is a schematic structural diagram of a laser light source device according to the present invention;
fig. 7 is a schematic structural diagram of the middle laser light source device according to the present invention.
Description of reference numerals:
1-a first light source; 2-a light shaping system; 3-a light-splitting element; 31-a first light splitting element; 32-a second light splitting element; 4-a converging lens; 5-a wavelength conversion device; a 51-wavelength converting region; 52-excitation light scattering region; 6-a second light source; 7-an opto-mechanical system; 101-excitation light; 102-stimulated luminescence; 103-supplement light.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and are intended to be used for explaining the present invention, but should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "first" and "second" are used merely for simplifying the description, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present disclosure, unless expressly stated or limited otherwise, the first feature being "on" or "under" the first feature may include the first feature and the second feature being in direct contact, or the first feature and the second feature being in contact, not in direct contact, but rather in another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "below," and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
In order to solve the problem that the angles of light rays emitted by two light sources cannot be adjusted independently by the conventional laser light source device, the present application provides a laser light source device, which is shown in fig. 2 and comprises a first light source 1, a light shaping system 2, a light splitting element 3, a converging lens 4, a wavelength conversion device 5, a second light source 6 and an optical-mechanical system 7, which are arranged in a light path; in the present application, it is preferable that the first light source 1 is a blue laser light source, and the second light source 6 is a red LED light source or an LD light source; the light shaping system 2 comprises a beam reducing lens and a light homogenizing element; in order to facilitate independent adjustment of the angles of the light beams emitted by the first light source 1 and the second light source 6, the light splitting element 3 in the present application includes a first light splitting element 31 and a second light splitting element 32, wherein parameters such as a position and a setting angle of the first light splitting element 31 are determined according to requirements of the first light source 1, and the first light splitting element 31 is adapted to adjust the angle of the light beam emitted by the first light source 1; the position, the setting angle and other parameters of the second light splitting element 32 are determined according to the requirements of the second light source 6, and the second light splitting element 32 is suitable for adjusting the angle of the light rays emitted by the second light source 6; specifically, the excitation light 101 emitted by the first light source 1 firstly enters the light shaping system 2, and after the light beam of the excitation light 101 is adjusted by the light shaping system 2, the excitation light enters the first light splitting element 31; the first light splitting element 31 is preferably adapted to reflect the excitation light 101, and after the reflection, the excitation light 101 passes through the converging lens 4 and is incident on the wavelength conversion device 5 to form an excitation light spot on the wavelength conversion device 5; specifically, in order to simplify the optical path structure, the wavelength conversion device 5 in the present application is a rotating body on which a wavelength conversion material and a scattering material are disposed; referring to fig. 3, the preferred wavelength conversion device 5 of the present application includes a wavelength conversion region 51 and an excitation light scattering region 52; the wavelength conversion region 51 is provided with a wavelength conversion material, and when the excitation light 101 enters the wavelength conversion region 51, the wavelength conversion material is excited to generate excited light 102 and reflect the excited light 102; the excitation light scattering region 52 is used for scattering the excitation light 101 and then reflecting the scattered excitation light; the wavelength conversion region 51 and the excitation light scattering region 52 are enclosed to form a circular ring structure; the reflected stimulated luminescence 102 and the reflected stimulated luminescence 101 are collimated by the converging lens 4, pass through the first light splitting element 31 and the second light splitting element 32, and enter the optical-mechanical system 7; meanwhile, the complementary light 103 emitted by the second light source 6 enters the second light splitting element 32, is reflected by the second light splitting element 32, then is combined with the excited light 101, and enters the optical mechanical system 7.
The first light splitting element 31 and the second light splitting element 32 are both made of glass coated with selective transmission films, and the shape of the glass can be determined according to specific requirements, wherein the coating films on the first light splitting element 31 and the second light splitting element 32 can be determined according to the requirements of light paths; because the first light splitting element needs to reflect the excitation light 101 so as to guide the excitation light 101 emitted by the first light source 1 to the wavelength conversion device 5, and meanwhile, both the excitation light 101 and the excited light 102 reflected by the wavelength conversion device 5 need to penetrate through the first light splitting element 31 so as to realize light combination, the first light splitting element 31 usually needs to be coated in different regions, which results in a complex element structure; in order to simplify the element structure, referring to fig. 4, in the present application, it is preferable that the area of the first light splitting element 31 is adapted to the diameter of the beam of the excitation light 101 adjusted by the light shaping system 2, that is, the cross-sectional area of the beam of the excitation light 101, so that the first light splitting element 31 with a smaller area is used for guiding the excitation light 101 generated by the first light source 1 to the wavelength conversion device 5 through the reflection action, and at the same time, the excitation light 101 reflected by the excitation light scattering region 52 can pass through the outer side of the first light splitting element 31 and then pass through the second light splitting element 32 through the transmission action, thereby realizing light combination.
The utility model provides a laser light source device is suitable for the exciting light 101 to the first light source 1 transmission respectively through setting up, and the beam splitting component that the supplementary light 103 angle of second light source 6 transmission was adjusted to make two beam splitting components can adjust the light angle that two light sources sent respectively, make the light that two light sources sent all can be incident to ray apparatus system 7 with best angle, improve the efficiency of ray apparatus system 7, realize the optimization of light path; meanwhile, the area of the first light splitting element 31 is matched with the beam diameter of the exciting light 101, so that the regional film coating of the light splitting element is avoided, the production cost is reduced overall, and the assembly is facilitated.
The present application preferably has the position of the first light splitting element 31 and the position of the second light splitting element 32 adjustable.
Wherein the area of the first light splitting element 31 is matched with the beam cross-sectional area of the excitation light 101; because the sectional area of the beam of the excitation light 101 adjusted by the light shaping system 2 is very small, the sectional area of the beam of the excited light 102 is preferably more than 4 times that of the beam of the excitation light 101 in the present application; therefore, the area of the first light splitting element 31 can be made much smaller than the area of the second light splitting element 32.
This application is through reducing first beam split component 31's area for need not to increase optical element such as speculum group and can realize that exciting light 101 participates in and closes light, simultaneously, help reducing light loss, improve light utilization ratio.
The first light splitting element 31 is disposed in such a manner that the first light splitting element 31 is located at the center of the beam of the excited light 102, and preferably, the first light splitting element 31 is a flat glass plate coated with a selective transmission film.
Further, considering that the stimulated light 102 and the complementary light 103 have partial spectrum overlap, when the beam diameter of the complementary light 103 is smaller than that of the stimulated light 102, referring to fig. 7, it is preferable that the area of the second light splitting element 102 is adapted to the beam diameter of the complementary light 103, and the second light splitting element 102 is preferably disposed at the central position of the beam of the complementary light 103, so that more stimulated light 102 can enter the opto-mechanical system 7, and the utilization rate of the light source is improved.
In the arrangement mode that the first light splitting element 31 is located at the central position of the light beam of the excited light 102, referring to fig. 4, on one hand, the first light splitting element 31 is located in the optical path of the excited light 101 reflected by the excited light scattering region 32, so that part of the excited light 101 located at the projection position of the first light splitting element 31 cannot be combined; on the other hand, since the size of the first light splitting element 31 is small, it is generally smaller than the beam diameter of the excited light 102; in order to fix the first light splitting element 31, a corresponding support structure needs to be provided; the supporting structure blocks the stimulated emission light 102 and the excitation light 101, and affects the utilization rate of the stimulated emission light 102 and the excitation light 101.
In order to reduce the obstruction of the stimulated emission light 102 and the excitation light 101 by the supporting structure of the first light splitting element 31, referring to fig. 5, the second arrangement of the first light splitting element 31 in the present application is that the first light splitting element 31 is located outside the light beam of the stimulated emission light 102, so as to reduce the influence of the supporting structure of the first light splitting element 31 on the stimulated emission light 102 and the excitation light 101.
When the first light splitting element 31 is disposed outside the beam of the excited light 102, the first light splitting element 31 may be a plate glass coated with a selective transmission film, and the angle of the plate glass is adjusted to reflect the excited light 101 adjusted by the light shaping system 2 to the wavelength conversion device 5; further, referring to fig. 6, the first light splitting element 31 may also be a curved structure; specifically, the first light splitting element 31 of the curved surface structure has a uniform thickness and is curved; the two sides are coated with optical films, so that the first light splitting element 31 with the curved surface structure and the light shaping system 2 form an optical system, and the shaping and light splitting effects on the light beam are realized together.
In addition, in the present application, when the second light source 6 is preferably an LED light source, the area of the second light splitting element 32 is larger than the beam cross-sectional area of the excited light 102 and the beam cross-sectional area of the complementary light 103; when the second light source 6 is an LD light source, the area of the second light splitting element 32 is smaller than the beam cross-sectional area of the excited light 102, and the area of the second light splitting element 32 is matched with the beam cross-sectional area of the supplement light 103.
Further, the second light source 6 is preferably a red light source.
Another object of the present invention is to provide a projection system, which includes the laser light source device as described above.
The utility model provides a projection system is suitable for the exciting light 101 to the 1 transmission of first light source respectively through the setting to and the spectral element that the supplementary light 103 angle of 6 transmissions of second light source carried out the regulation, thereby make two spectral element adjust the light angle that two light sources sent respectively, make the light homoenergetic that two light sources sent incident to ray apparatus system 7 with best angle, improve ray apparatus system 7's efficiency, realize the optimization of light path.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.
Claims (10)
1. A laser light source device is characterized by comprising a first light source (1), a light shaping system (2), a light splitting element (3), a converging lens (4), a wavelength conversion device (5), a second light source (6) and an optical mechanical system (7) which are arranged in a light path; wherein the content of the first and second substances,
the light splitting element (3) comprises a first light splitting element (31) and a second light splitting element (32);
exciting light (101) emitted by the first light source (1) enters the first light splitting element (31) after passing through the light shaping system (2), passes through the converging lens (4) after reflection, enters the wavelength conversion device (5) and generates stimulated light (102);
the stimulated light (102) is collimated by the converging lens (4), passes through the first light splitting element (31) and the second light splitting element (32), and is incident to the optical-mechanical system (7);
the supplementary light (103) emitted by the second light source (6) is incident to the second light splitting element (32), and is incident to the optical-mechanical system (7) after being reflected;
the wavelength conversion device (5) comprises a wavelength conversion region (51) and an excitation light scattering region (52); the wavelength conversion region (51) and the excitation light scattering region (52) are enclosed to form a circular ring-shaped structure.
2. The laser light source device according to claim 1, wherein the first light splitting element (31) and the second light splitting element (32) are adjustable in position.
3. The laser light source device according to claim 1, wherein an area of the first light splitting element (31) is adapted to a beam cross-sectional area of the excitation light (101), and a beam cross-sectional area of the excited light (102) is 4 times or more larger than a beam cross-sectional area of the excitation light (101).
4. The laser light source device according to claim 3, wherein the first light splitting element (31) is located at a central position of the beam of the excited light (102).
5. The laser light source device according to claim 3, wherein the first light splitting element (31) is located outside the beam of the excited light (102).
6. The laser light source device according to claim 3, wherein the first light splitting element (31) has a curved surface structure.
7. The laser light source device according to claim 1, wherein when the second light source (6) is an LED light source, the area of the second light splitting element (32) is larger than the beam cross-sectional area of the excited light (102) and the beam cross-sectional area of the supplement light (103).
8. The laser light source device according to claim 1, wherein when the second light source (6) is an LD light source, the area of the second light splitting element (32) is smaller than the beam cross-sectional area of the excited light (102) and is adapted to the beam cross-sectional area of the supplement light (103).
9. The laser light source device according to claim 1, wherein the second light source (6) is a red light source.
10. A projection system comprising the laser light source device according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220739287.XU CN217639916U (en) | 2022-03-31 | 2022-03-31 | Laser light source device and projection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220739287.XU CN217639916U (en) | 2022-03-31 | 2022-03-31 | Laser light source device and projection system |
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| CN217639916U true CN217639916U (en) | 2022-10-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117130219A (en) * | 2023-08-23 | 2023-11-28 | 无锡激擎光电科技有限公司 | Light source system and projection apparatus |
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- 2022-03-31 CN CN202220739287.XU patent/CN217639916U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117130219A (en) * | 2023-08-23 | 2023-11-28 | 无锡激擎光电科技有限公司 | Light source system and projection apparatus |
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